WO2011118055A1 - ティシュペーパー製品用二次原反ロールの製造方法及びティシュペーパー製品の製造方法 - Google Patents
ティシュペーパー製品用二次原反ロールの製造方法及びティシュペーパー製品の製造方法 Download PDFInfo
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- WO2011118055A1 WO2011118055A1 PCT/JP2010/063037 JP2010063037W WO2011118055A1 WO 2011118055 A1 WO2011118055 A1 WO 2011118055A1 JP 2010063037 W JP2010063037 W JP 2010063037W WO 2011118055 A1 WO2011118055 A1 WO 2011118055A1
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- Prior art keywords
- tissue paper
- roll
- chemical
- chemical solution
- continuous sheet
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K10/00—Body-drying implements; Toilet paper; Holders therefor
- A47K10/16—Paper towels; Toilet paper; Holders therefor
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K10/00—Body-drying implements; Toilet paper; Holders therefor
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K10/00—Body-drying implements; Toilet paper; Holders therefor
- A47K10/16—Paper towels; Toilet paper; Holders therefor
- A47K10/18—Holders; Receptacles
- A47K10/20—Holders; Receptacles for piled sheets
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K7/00—Body washing or cleaning implements
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/22—Addition to the formed paper
- D21H23/50—Spraying or projecting
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/002—Tissue paper; Absorbent paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
- D21H27/30—Multi-ply
Definitions
- the present invention relates to a method for manufacturing a secondary paper roll for tissue paper products used in a multi-stand type interfolder and a method for manufacturing tissue paper products.
- tissue paper boxing products are obtained by stacking a plurality of continuous tissue papers by folding them with an interfolder (folding equipment) and cutting them into a predetermined length to obtain a tissue paper bundle. Is stored in a storage box (tissue carton).
- interfolders include multi-stand type (multiple type) interfolders as disclosed in Patent Documents 1 and 2 below, and rotary interfolders as disclosed in Patent Documents 3 and 4 below. It has been known.
- the following is a conventional example of a manufacturing method using a multi-stand type interfolder. That is, a primary web roll (generally also called a jumbo roll) is manufactured by making a thin paper in a papermaking facility and winding it.
- this primary web roll is set on a ply machine, and a plurality of primary webs are produced.
- the primary continuous sheet fed from the roll is overlapped and wound and slit (divided into the product width of the tissue paper product or a multiple of the width of the tissue paper product in the width direction) to produce a secondary raw roll made of a plurality of plies.
- the secondary roll manufactured by the ply machine is taken out from the ply machine, the necessary number of rolls are set in the multi-stand type interfolder.
- the secondary continuous sheet is fed out from the secondary web roll and fed to the folding mechanism, where it is stacked while being folded, and then cut into a predetermined length to form a tissue paper bundle and stored in the storage box.
- a manufacturing method using such a multi-stand type interfolder is more productive than a manufacturing method using other folding equipment because it has a large number of folding mechanisms (usually 80 to 100). Has advantages.
- tissue paper product coated with a chemical such as a moisturizer (usually also referred to as “lotion chemical”) has increased, and for example, a manufacturing method as disclosed in Patent Documents 5 to 7 below.
- a chemical such as a moisturizer
- Various facilities have been proposed.
- tissue paper products containing such a lotion chemical are mainly manufactured by a rotary interfolder (for example, Patent Document 5 below).
- the rotary type interfolder has a disadvantage that productivity is low because folding and cutting are simultaneously performed in a direction perpendicular to the processing direction.
- the present inventors have considered manufacturing tissue paper products to which a chemical solution has been applied by a manufacturing method using a multi-stand type interfolder that is more productive than a rotary interfolder.
- a manufacturing method using a multi-stand type interfolder if a chemical solution application step is provided separately from the ply machine or the multi-stand type interfolder, it takes time and labor to transfer the raw material and a large equipment cost. There is a problem.
- the chemical solution application step is provided in the multi-stand type interfolder, it is necessary to separately provide a line for manufacturing a tissue paper product to which a chemical solution is applied and a line for manufacturing a tissue paper product to which no chemical solution is applied.
- the main problem of the present invention is that production of secondary rolls for tissue paper products used in multi-stand type inter-folders is sufficient to make a minor modification of existing equipment without requiring major equipment modification. It is providing the manufacturing method of the secondary raw material roll for tissue paper products excellent in the property. Other problems will become apparent from the description of the effect column of the present invention described later.
- a method for producing a secondary web roll for tissue paper products wherein a plurality of secondary web rolls for tissue paper products are continuously produced from the primary web roll, A lamination step in which a primary continuous sheet fed from a plurality of primary fabric rolls is laminated along the continuous direction to form a laminated continuous sheet; A primary chemical spraying step of applying a chemical in a sprayed state to each of the continuous sheets; Thereafter, a secondary chemical solution application step of applying a chemical solution to each continuous sheet by a flexographic printing method or a gravure printing method, A slitting process for slitting the laminated continuous sheet so as to have a product width of tissue paper products or a multiple of the width, A tissue paper product comprising: a winding step of winding each slit continuous sheet coaxially to form a plurality of secondary rolls having a product width of the tissue paper product or a multiple of the width of the tissue paper product. Manufacturing method for secondary raw fabric rolls.
- tissue paper product according to claim 2 further comprising a contact embossing step for applying a line-shaped contact embossing for preventing delamination of the laminated continuous sheet between the second chemical solution applying step and the slitting step. Manufacturing method for secondary raw fabric rolls.
- a number of secondary rolls for tissue paper products manufactured so as to have a product width of tissue paper products or multiple times the width of tissue paper products in the slit process in the manufacturing method according to the present invention are set in a multi-stand type interfolder at this latter stage.
- the secondary continuous sheet is fed out from the secondary raw roll set in the multi-stand type interfolder, sent to the folding mechanism, stacked while being folded, and then cut into a predetermined length to be bundled with tissue paper. And stored in a storage box.
- a secondary raw roll for tissue paper products is continuously produced from a primary raw roll, and in a so-called ply machine, a secondary chemical spraying step and a secondary by a flexographic printing method or a gravure printing method.
- a chemical solution application process was incorporated to apply the chemical solution to the continuous sheet. Therefore, a minor modification of the existing papermaking equipment and the ply machine is sufficient without requiring a large equipment modification, and there is an advantage that a small investment equipment cost is sufficient.
- the chemical spraying process and the chemical application process are incorporated in the ply machine. Switching to the tissue paper product without coating is simply excellent depending on whether or not the secondary paper roll for tissue paper product is coated with a chemical solution, and thus is excellent in productivity.
- the production method of the present invention provides advantages such as equipment cost and coating amount management.
- the processing speed of the ply machine is designed in accordance with the processing capability of the multi-stand type inter-folder. It is common to become. In that case, the production speeds of the chemical spraying process and the chemical coating process in the ply machine need to be performed at the same high speed of about 700 to 1100 m / min. In such a high-speed ply machine, for example, when a chemical solution is applied by a transfer method such as gravure, flexo, roll coating, a large amount of paper dust is generated mainly due to friction between the sheet running at high speed and the printing plate roll, It mixes in the coating chemical and its concentration changes, resulting in variations in coating amount.
- a transfer method such as gravure, flexo, roll coating
- the variation in the width application applied the first time can be offset by the variation in the second application, and as a result, there is little variation in the width direction.
- the chemical solution is applied in a form in which the sheet is pressure-bonded between the printing plate roll and the impression cylinder roll, so that the fiber gap of the sheet is crushed and it is difficult to produce a bulk when made into a product. Moreover, this tendency becomes more prominent in the form in which the chemical solution is applied to the sheet in two steps.
- the first chemical solution spraying step and the second chemical solution application step are applied twice.
- the variation in the application in the width direction applied the first time can be offset by the variation in the application in the second time.
- the application form has less variation in the width direction.
- the first chemical solution is applied by chemical spraying.
- the chemical spray does not generate friction in the pressure-bonded form of the sheet, and does not generate paper dust, and can be stably applied.
- the fiber gap is not crushed, a bulky tissue paper can be obtained.
- there is an effect that paper dust is suppressed by having appropriate moisture by the first chemical spray, and generation of paper dust is suppressed in the second transfer-type application.
- the chemical solution application in the second chemical solution application step is performed by a flexographic printing method or a gravure printing method.
- the flexographic printing system has the advantage that the application amount can be stabilized in response to the unevenness of the crepe paper even if the flexographic printing plate roll is made of resin and the processing speed is high, the number of anilox rolls, the cell capacity, By changing the number of lines and the vertex area ratio of the flexographic printing plate roll, there is an advantage that it is possible to easily cope with a wide range of chemical liquid viscosity and stabilize the coating amount.
- coating process shall be a flexographic printing system using a doctor chamber.
- the doctor chamber type is a film made by coating the chemical solution directly on the surface of the anilox roll (transfer concave roll), and it is difficult to mix paper powder and air into the chemical solution, and the characteristics of the chemical solution are easy to stabilize. And since the chemical
- the gravure printing method is less convenient than the flexo printing method because the roll is made of metal. However, the gravure printing method is also used because it shows almost the same coating amount and coating stability in the width direction. it can.
- the chemical solution application in the secondary chemical solution application process may be a roll coating method instead of the flexographic printing method or the gravure printing method. Hard to get.
- (B) It is a partially broken figure which shows a mode that the tissue paper accommodated in the storage box is taken out. It is a principal part expansion perspective view of the site
- FIG. 1 It is a figure which shows a mode that the contact embossing is provided to the lamination
- FIG. 1 It is a schematic block diagram which shows an example of a chemical
- FIG. 1 It is a schematic diagram for demonstrating the derivation
- FIG. 1 It is a schematic diagram for demonstrating the other derivation
- a wet paper W is formed by supplying a pre-adjusted paper material from a head box 301 to a wire part 311 (forming process), and this wet paper W is fed into a felt 322 of a press part 321. After being transferred to, dehydration is performed by being sandwiched between a pair of dewatering rolls 323 and 324 (dehydration process).
- the dehydrated wet paper W is attached to the surface of the Yankee dryer 331 partially covered with the Yankee dryer hood 332, dried, and peeled off by the doctor blade 333 to obtain the dry paper S1 (drying step).
- the first winding means 341 having the winding drum 342 is used to dry the dry paper S1 so that the back surface of the dry paper S1 faces the shaft side of the primary raw roll JR.
- a primary raw roll (commonly called “jumbo roll”) JR is formed by winding the paper S1 (first winding step).
- the back surface of the dry paper S1 primary continuous sheets S11 and S12 described later
- the back surface of the dry paper S1 means a surface (an anti-dryer surface) opposite to the surface that is in contact with the cylinder of the Yankee dryer 331.
- a dispersant for example, a dry paper strength enhancer, a wet paper strength enhancer, a softener, a release agent, an adhesive, a pH adjuster such as caustic soda, an antifoaming agent, an antiseptic, a slime.
- a pH adjuster such as caustic soda
- an antifoaming agent such as an antiseptic
- a slime for example, a dispersant, a dry paper strength enhancer, a wet paper strength enhancer, a softener, a release agent, an adhesive, a pH adjuster such as caustic soda, an antifoaming agent, an antiseptic, a slime.
- Appropriate chemicals such as control agents and dyes can be added.
- Smoothing processing can also be performed on the dry paper S1 peeled off by the doctor blade 333 by a calendar means (not shown).
- the primary raw roll JR manufactured by the above-described manufacturing equipment / method is brought into the secondary raw roll manufacturing equipment X1 (ply machine X1) for tissue paper products according to the present invention, At least two or more primary fabric rolls JR and JR are set.
- the ply machine X1 is a continuous sheet in which primary continuous sheets (S11, S12 in the illustrated example) fed from these primary raw rolls JR, JR are laminated along the continuous direction, and laminated in two plies in the illustrated example.
- the ply means 51 is used as S2.
- the ply means 51 is configured such that the surfaces of the primary continuous sheets S11 and S12 fed out from the pair of primary raw rolls JR are respectively the surfaces of the laminated continuous sheet S2.
- the back surfaces of the sheets S11 and S12 can be respectively configured to be the surface of the laminated continuous sheet S2, and the back surface of one of the primary continuous sheets S11 and S12 is the surface of the laminated continuous sheet S2, and the other surface is It can also comprise so that it may become the surface of lamination
- the primary continuous sheets S11 and S12 (dry paper S1) are in contact with the glossy surface of the Yankee dryer 331 during drying, and therefore have less fuzz as compared to the back surface and are smooth and soft to the touch.
- the surfaces of the sheets S11 and S12 (dry paper S1) are respectively configured to be the surface of the laminated continuous sheet S2.
- the laminated continuous sheet S2 slit by the slit means 55 is coaxially wound to form a plurality of secondary raw rolls R having a product width of tissue paper products or a multiple of the width.
- Winding means 56 is provided.
- the winding means 56 has two winding drums 56A for guiding each slit continuous sheet S2 to the secondary raw roll R, and these two winding drums 56A are secondary.
- the laminated continuous sheet S2 is guided in contact with the outer peripheral surface of the raw roll R.
- One or more calendering means 52 for calendering the laminated continuous sheet S2 may be provided in the production facility X1 for the secondary paper roll for tissue paper products.
- the type of calendar in the calendar means 52 is not particularly limited, but is preferably a soft calendar or a chilled calendar for the purpose of improving the smoothness of the surface and adjusting the paper thickness.
- the soft calendar is a calendar using a roll coated with an elastic material such as urethane rubber
- the chilled calendar is a calendar made of a metal roll.
- the number of calendar means 52 can be changed as appropriate. If there are a plurality of installations, there is an advantage that even if the processing speed is high, it can be sufficiently smoothed.
- calendar means 52 When two or more calendar means 52 are installed, they can be arranged side by side in the horizontal direction, the up-down direction, or the diagonal direction, and these installation directions may be combined.
- the holding angle When arranged side by side in the horizontal direction, the holding angle becomes smaller, so the processing speed can be increased, and when arranged side by side in the vertical direction, the installation space can be reduced.
- the holding angle means an angle while the sheet is in contact (a part of an arc of a cross section perpendicular to the axis) when viewed from the roll axis center (the same applies hereinafter).
- Paper making is also performed as control factors such as calendar type, nip line pressure, and number of nips in the calendar processing conditions, and these control factors are preferably changed as appropriate depending on the quality of tissue paper to be obtained, that is, paper thickness and surface properties.
- the installation position of the calendar means 52 is not particularly limited, but is preferably subsequent to the ply means 51 and upstream of the primary chemical spraying means 40A and 40B.
- the second chemical solution applying means 53A and 53B can be arranged after the contact embossing means 54, but the gap between the fibers to which the chemical solution is applied is crimped. Since it works, it is not a preferable form.
- Medical spraying means Although it does not specifically limit as primary chemical
- the types of spray nozzles in the nozzle spray device include an empty conical nozzle that sprays in an annular shape, a full conical nozzle that sprays in a circular shape, a full pyramid that sprays in a square shape, a full nozzle and a fan Type nozzles, etc., so that the chemical solution is uniformly sprayed in the width direction of the dry paper S2, the nozzle diameter, the number of nozzles, the nozzle arrangement pattern, the number of nozzle arrangements, or the spray distance, spray pressure, spray angle, In addition, the concentration and viscosity of the spray liquid can be appropriately selected and used.
- the one-fluid spraying method applies pressure directly to the chemical liquid to be sprayed using compressed air and sprays mist droplets from the nozzle, or blows air into the nozzle from a fine hole opened on the side of the nozzle near the jet outlet. This is a method of sucking and spraying mist.
- the two-fluid spraying method is mixed with a liquid sprayed with compressed air inside the nozzle, an internal mixing type that atomizes, mixed with a liquid sprayed with compressed air outside the nozzle, an external mixing type that atomizes, and atomized
- Examples include a collision type system in which mist droplet particles collide with each other to further homogenize and atomize the mist droplet particles.
- the rotor dampening coating device is a device that sends out the liquid to be sprayed onto a disk that rotates at high speed, and makes the liquid atomized by the centrifugal force of the disk, and controls the particle size of the droplets by changing the rotational speed of the disk.
- the amount of spray liquid (applied amount) is controlled by changing the amount of liquid fed onto the disk.
- the rotor dampening coating device has the advantage that a small amount of spray liquid can be uniformly applied to the paper surface while suppressing the scattering of mist droplets, and the adjustment of spraying speed, mist particle diameter, etc. is easy. is there.
- the atomized particle diameter of the atomized chemical liquid is as small as possible.
- the mist droplets are too fine, the mist droplets are swept away by the rebound of the sprayed air or the air accompanying the surface of the dry paper S2, and particularly when the traveling speed of the dry paper S2 is high, the mist drops are dry paper. It becomes difficult to adhere to the surface of S2.
- the spray distance, spray pressure, spray angle, spray speed, and in the case of the two-fluid system the mixing ratio of the chemical liquid for spraying and the compressed air, the concentration and viscosity of the chemical liquid, etc.
- mist droplets floating as mist without being applied to the surface of the dry paper S2 can be sucked and collected and sprayed again.
- FIG. 28 shows an example of a chemical spraying means 40A, 40B of a nozzle type spray system, particularly a two-fluid system.
- the chemical spraying means (devices) 40A and 40B are formed with a chemical solution passage 40a at the center and an air passage 40b around the chemical solution passage 40a, and the chemical solution ejected from the tip of the chemical solution passage 40a by the air discharged from the air passage 40b.
- the liquid is atomized, and the chemical solution is sprayed in a substantially conical shape.
- Reference numeral 40c denotes an external protective casing which protects the nozzle from paper dust and the like, and can clean the nozzle with air passing through the purge air passage 40d if necessary.
- This kind of chemical spraying means 40A, 40B can be provided at one or more intervals in the width direction of the dry paper S2.
- the mist droplets are washed away by the rebound of the sprayed chemical liquid or the air accompanying the surface of the dry paper S2, and the mist drops adhere to the dry paper S2 surface particularly when the dry paper S2 has a high traveling speed. It becomes difficult. Therefore, if necessary, as shown in FIG. 29, the air sprayed from the air supply path 40f formed in the casing 40e from the periphery of the chemical fluid spraying means (spray nozzle) 40A, 40B of the one-fluid system or the two-fluid system, When the spray chemical liquid from the chemical spray means (spray nozzles) 40A and 40B is surrounded, the chemical liquid can be suitably applied to the dry paper S2.
- FIG. 30 shows an example of a rotor dampening coating apparatus 40X.
- a rotating rotor 40o is provided in a cover storage chamber 40p provided as necessary, and a chemical solution is sprayed onto the dry paper S2 from an ejection port 40q of the rotating rotor 40o.
- the amount of chemical applied to the dry paper S2 by the primary chemical spraying means 40A and 40B is desirably 0.5 to 1.5 g / m 2 , more preferably 0.7 to 1.2 g / m 2. It is said.
- the amount of the chemical solution applied by the second chemical solution applying means 53A and 53B is also desirably 0.5 to 1.5 g / m 2, and more preferably 0.7 to 1.2 g / m 2 . Therefore, it is desirable that the total is 1.0 to 3.0 g / m 2 per ply.
- the total of the two plies is preferably 2.0 to 6.0 g / m 2, and particularly preferably 2.5 to 5.0 g / m 2 .
- the chemical solution used in the present invention is preferably the same for the primary chemical solution spraying means 40A and 40B and the secondary chemical solution application means 53A and 53B in order to achieve affinity.
- the viscosity is preferably 1 to 700 mPa ⁇ s, particularly 50 to 400 mPa ⁇ s (40 ° C.) at 40 ° C. If it is less than 1 mPa ⁇ s, the chemical solution is likely to be scattered on rolls such as anilox rolls and printing plate rolls. Conversely, if it is more than 700 mPa ⁇ s, it tends to be difficult to control the amount of application to each roll or continuous sheet.
- the chemical solution is particularly preferably an aqueous solution, and preferably contains 70 to 90% polyol, 1 to 15% moisture, and 0.01 to 22% functional chemical as its components.
- Polyols include polyhydric alcohols such as glycerin, diglycerin, propylene glycol, 1,3-butylene glycol, polyethylene glycol, and derivatives thereof, and saccharides such as sorbitol, glucose, xylitol, maltose, maltitol, mannitol, and trehalose.
- Functional agents include softeners, surfactants, inorganic and organic fine particle powders, oily components, and the like.
- Softeners and surfactants have the effect of imparting flexibility to the tissue and smoothing the surface, and anionic surfactants, cationic surfactants and zwitterionic surfactants are applied.
- Inorganic and organic fine particle powders have a smooth surface.
- the oil component has a function of improving lubricity, and higher alcohols such as liquid paraffin, cetanol, stearyl alcohol, and oleyl alcohol can be used.
- a drug that maintains the moisture retention of polyol as a functional drug one or more of a hydrophilic polymer gelling agent, collagen, hydrolyzed collagen, hydrolyzed keratin, hydrolyzed silk, hyaluronic acid or a salt thereof, ceramide, etc. Moisturizers such as any combination can be added.
- functional agents include emollients such as fragrances and various natural extracts, vitamins, emulsifiers that stabilize compounding ingredients, antifoaming agents, antifungal agents, organic acids, etc.
- emollients such as fragrances and various natural extracts
- a deodorant can be appropriately blended.
- a polyhydric alcohol such as glycerin or propylene glycol
- the temperature at the time of applying the chemical solution is preferably 30 ° C. to 60 ° C., preferably 35 ° C. to 55 ° C.
- the secondary chemical solution applying means 53B that directly applies the chemical solution to the primary continuous sheet S11 is the other second chemical solution applying means. It is desirable to apply more chemical solution than the next chemical solution application means 53A.
- FIG. 24A is a cross-sectional view of the laminated continuous sheet S2 laminated on the two plies before chemical solution application (cross-sectional view cut in parallel with the MD direction).
- a difference is provided in the amount of the chemical solution on both surfaces, and a large amount of the chemical solution is applied to the primary continuous sheet S11 side in the drawing.
- the laminated layers are integrated by contact embossing CE and cut into the product width by the slit means 55 (FIG. 24B).
- the laminated continuous sheet S2 is taken up by the take-up means 56 and is left to stand for infiltration of the chemical solution.
- the primary continuous sheets S11 and S12 constituting the laminated continuous sheet S2 coated with the chemical solution by the secondary chemical solution application unit 53 mainly extend in the MD direction.
- the primary continuous sheet S11 to which more chemical solution is applied has a higher elongation rate than the other primary continuous sheet S12, but the primary continuous sheets S11 and S12 are fixed to each other by contact embossing CE. Wrinkles occur on the surface of the extended primary continuous sheet S11 (24 (C)).
- a difference is also provided in the crepe rate of the laminated continuous sheet S2 to be laminated, and if a base paper having a high crepe rate is used for the primary continuous sheet S11, a difference may be caused in the elongation rate between the primary continuous sheet S11 and the primary continuous sheet S12. it can.
- the crepe is formed by the difference between the dryer speed and the winding speed after the base paper is dried by the Yankee dryer 115 and peeled off from the Yankee dryer 115 by the doctor blade 117.
- the shape of this crepe is adjusted by sticking the paper to the Yankee dryer 115, but since there is some variation in this sticking and the fiber raw material is not evenly distributed, There is some variation in the three-dimensional crepe shape. This variation becomes more prominent as the crepe rate increases.
- the tissue paper that is the product has a different bulk feeling unless the chemical solution is applied (FIG. 25 ( A)).
- the primary continuous sheet S11 extends at a higher elongation rate than the primary continuous sheet S12. Since it is fixed in parallel with the MD direction (not shown), the primary continuous sheet S11 corrugates and the bulk of the laminated sheet increases. (FIG. 25 (B)).
- the secondary chemical solution application means 53 in the present invention a flexographic printing method or a gravure printing method is used.
- the sheet processing speed is 100 to 1100 m / min, preferably 350 to 1050 m / min, and particularly preferably 450 to 1000 m / min. If it is less than 100 m / min, the productivity is low. On the other hand, if it is 1100 m / min or more, uneven coating tends to occur and the amount of chemical solution tends to increase.
- the number of flexographic printing plate rolls is 10 to 60 lines, preferably 15 to 40 lines, and particularly preferably 20 to 35 lines. If the number of lines is less than 10, many coating irregularities occur.
- the number of anilox rolls is 10 to 300, preferably 25 to 200, and more preferably 50 to 100. If the number of lines is less than 10, many coating irregularities occur. On the other hand, if the number of lines exceeds 300 lines, the paper dust tends to be clogged.
- the anilox roll has a cell capacity of 10 to 100 cc, preferably 15 to 70 cc, particularly preferably 30 to 60 cc. If the cell capacity is less than 10 cc, a desired coating amount cannot be obtained. On the other hand, if the cell capacity is more than 100 cc, the amount of chemical solution scattered increases.
- the flexographic printing method or the gravure printing method can stabilize the coating amount even when the processing speed is high, and can stably apply a wide range of chemical viscosity with one roll.
- the means (calendar means 52 and contact embossing means 54 in the example of FIG. 11) arranged before and after the secondary chemical solution applying means 53 are arranged close to each other.
- the laminated continuous sheet S2 is directly transferred from the front stage to the rear stage of the secondary chemical solution application unit 53, and does not pass through the secondary chemical solution application unit 53. Since it is only necessary to pass the laminated continuous sheet S2, the presence / absence of the chemical application can be easily switched.
- the production facility X1 for the secondary paper roll for tissue paper product shown in FIG. 11 when producing the tissue paper product to which the chemical solution is not applied, as shown by a two-dot chain line in FIG. It is only necessary to transfer directly from the means 52 to the contact embossing means 54 and to flow the laminated continuous sheet S2 without passing through the secondary chemical solution applying means 53.
- the chemical solution application unit 53A in the form of one of the doctor chambers has a doctor chamber 61A in which a chemical solution is placed facing a rotatable anilox roll 63A, and the anilox from the doctor chamber 61A.
- the chemical solution is delivered to the roll 63A.
- a printing plate roll 64A that is in contact with the anilox roll 63A and is also in contact with one surface of the laminated continuous sheet S2 is rotatably installed, and a chemical solution is delivered from the anilox roll 63A to the printing plate roll 64A.
- the chemical solution is applied from the printing plate roll 64A to the laminated continuous sheet S2 while applying pressure to the laminated continuous sheet S2 with the elastic roll 65A facing the printing plate roll 64A across the laminated continuous sheet S2. It has become.
- medical solution application part 53A is located in the surface side of lamination
- a supply pump (not shown) for applying a chemical solution to the doctor chamber 61A and a discharge supply pump (not shown) for returning the chemical solution from the doctor chamber 61A are installed in the doctor chamber 61A.
- the chemical solution application section 53B in the form of the other doctor chamber has a doctor chamber 61B in which a chemical solution is placed facing the rotatable anilox roll 63B.
- the chemical solution is delivered to the anilox roll 63B.
- a printing plate roll 64B that is in contact with the anilox roll 63B and is also in contact with the other surface of the laminated continuous sheet S2 is rotatably installed, and a chemical solution is delivered from the anilox roll 63B to the printing plate roll 64B.
- the chemical solution is applied from the printing plate roll 64B to the laminated continuous sheet S2 while applying pressure to the laminated continuous sheet S2 with the elastic roll 65B facing the printing plate roll 64B across the laminated continuous sheet S2. It has become.
- medical solution application part 53B is located in the other surface side of the lamination
- a supply pump (not shown) for applying a chemical solution to the doctor chamber 61B and a discharge supply pump (not shown) for returning the chemical solution from the doctor chamber 61B are also installed in the doctor chamber 61B. .
- the chemical solution is applied to both surfaces of the laminated continuous sheet S2 from the chemical solution application unit 53A and the chemical solution application unit 53B.
- the coating amount on the surface side of the laminated continuous sheet S2 facing the roller 54A by the chemical solution application unit 53A Can be applied to the laminated continuous sheet S2 from both sides of the laminated continuous sheet S2, while reducing the amount of the liquid applied to the other surface side by the chemical applying unit 53B.
- the total coating amount on both sides is set to 2.5 to 5 g / m 2
- the coating amount on the outer peripheral surface of the secondary raw roll R which is a ply raw roll is set to the secondary raw fabric.
- the coating amount on the outer peripheral surface of the secondary raw roll R out of the total coating amount of the chemical solution on both sides of the paper is 20% or more and less than 50%.
- the specific value varies within the above range because the optimum condition varies depending on the balance between the slip and quality of the secondary roll R, the thickness of the sheet, the permeability of the chemical, and the transferability.
- the flexographic printing method allows the plate to be made of resin and is elastic, so that even if there are some irregularities on the sanitary thin paper, it can be adjusted by the printing pressure. Wrinkles are difficult to enter.
- the coating amount can be stabilized even when the processing speed is high, and a wide range of chemical viscosity can be stably applied with one roll.
- the application is also performed when the chemical solution to be used as a chemical solution is applied at a coating amount in the range described later while the laminated continuous sheet S2 is set to 700 m / min or more, preferably at a speed of 900 m / min or more.
- the laminated continuous sheet S2 can be wound evenly and without meandering.
- medical solution application means 53 accompanying this form are as follows.
- a filtration device for paper powder and air contained in the chemical solution circulating in the application device such as a chemical solution tank.
- the chamber-type secondary chemical solution applying means 53 it is necessary to install a filtration device for paper powder and air contained in the chemical solution circulating in the application device such as a chemical solution tank.
- the chamber-type secondary chemical solution applying means 53 it is necessary to install a filtration device for paper powder and air contained in the chemical solution circulating in the application device such as a chemical solution tank.
- the chamber-type secondary chemical solution applying means 53 When the chamber-type secondary chemical solution applying means 53 is used, paper dust and the like are reduced, so that the load on the filtration device is reduced.
- it is desirable to stabilize the chemical viscosity by controlling the temperature of the chemical within the coating apparatus such as the doctor chamber 61A or 61B.
- a heater can be installed in the intermediate tank and piping connected to the doctor chambers 61A and 61B
- the moisture amount and variation in the width direction can always be checked using, for example, an infrared inspection machine.
- brush rolls 69A and 69B having a large number of brushes are provided in contact with the printing plate rolls 64A and 64B, and the paper powder to which the printing plate rolls 64A and 64B are always attached is also provided. By scraping, clogging of the plate rolls 64A and 64B and the anilox rolls 63A and 63B can be prevented, and stable operation is possible.
- the illustrated chemical solution supply apparatus 100 is shown as one of the two chemical solution application units 53A and 53B in the doctor chamber type flexographic printing system that constitutes the secondary chemical solution application means 53 described above.
- the horizontal direction of the chemical solution supply apparatus 100 shown in FIG. 14 is defined as the X-axis direction, and the vertical direction is defined as the Y-axis direction.
- the chemical solution supply apparatus 100 includes a storage tank 110 that stores the chemical solution L, an extrusion unit 120 that extrudes the chemical solution L in the storage tank 110, a doctor chamber 130 that stores the chemical solution L extruded from the extrusion unit 120, and a doctor chamber.
- the drawing part 140 which draws a part of the chemical liquid L stored in 130 into the tank 110
- the chemical liquid transfer part 150 which transfers the chemical liquid L supplied from the doctor chamber 130 to the surface of the laminated continuous sheet S2, and the laminated continuous sheet S2
- a rotation unit 160 that is wound around the peripheral surface and rotated, and the like are included. Therefore, the above-described doctor chambers 61A and 61B are the doctor chamber 130 in the present embodiment, and the above-described elastic rolls 65A and 65B are the rotating unit 160 in the present embodiment.
- the storage tank 110 is a tank that stores the chemical liquid L therein, and an extrusion hose 121 of the extrusion unit 120 described later and a drawing hose 141 of the drawing unit 140 are inserted into the liquid layer.
- the extruding unit 120 includes, for example, an extrusion hose 121 inserted into the storage tank 110, a supply pump 122 that extrudes the chemical liquid L stored in the storage tank 110 and supplies the chemical liquid L to the doctor chamber 130, and the chemical liquid L generated by the supply pump 122. And an adjustment valve 123 for adjusting the extrusion amount (flow rate).
- the extrusion hose 121 is a hose having one end inserted into the storage tank 110 and the other end connected to the introduction part 132 of the doctor chamber 130, and functions as a flow path for transporting the chemical liquid L in the storage tank 110.
- the supply pump 122 is attached to the extrusion hose 121 and is driven by a drive motor (not shown) to pressurize and feed the chemical L in the storage tank 110 to the doctor chamber 130.
- the adjustment valve 123 adjusts the flow rate of the chemical liquid L pushed out by the supply pump 122 by opening and closing the valve.
- the pull-in unit 140 includes a pull-in hose 141 inserted into the storage tank 110 and a suction pump 142 that pulls the chemical L into the storage tank 110.
- the draw-in hose 141 is a hose having one end inserted into the storage tank 110 and the other end connected to a lead-out part 133 of a doctor chamber 130 described later, and transports the chemical L derived from the lead-out part 133 to the storage tank 110. Functions as a flow path.
- the suction pump 142 is attached to the drawing hose 141 and is driven by a drive motor (not shown) to suck the chemical liquid L led out from the lead-out unit 133 and discharge it to the storage tank 110 (outside).
- the supply pump that applies the chemical liquid to the doctor chambers 61A and 61B described above is the supply pump 122 that extrudes the chemical liquid L stored in the storage tank 110 and supplies it to the doctor chamber 130 in this embodiment.
- the discharge supply pump for returning the chemical solution from the doctor chambers 61A and 61B is the suction pump 142 that draws the chemical solution L into the storage tank 110.
- the doctor chamber 130 is disposed adjacent to an anilox roll 151 to be described later, and includes a main body part 131 that stores the chemical L, an introduction part 132 that connects the extruding part 120 and the main body part 131, a retracting part 140, and a main body part 131. And a derivation unit 133 that connects the two.
- the main body portion 131 is a main body portion of the doctor chamber 130 and includes a storage portion 131a and blades 131b and 131c.
- the storage part 131 a is open at the end on the anilox roll 151 side, is connected to the introduction part 132 and the lead-out part 133, and supplies the chemical solution L stored inside to the anilox roll 151.
- a part of the chemical liquid L introduced into the storage part 131a from the introduction part 132 is led out through the lead-out part 133 so that the supply amount to the anilox roll 151 is constant.
- the above-described anilox rolls 63A and 63B are anilox rolls 151 in the present embodiment.
- the blades 131b and 131c are provided so as to come into contact with the anilox roll 151, and perform the throttling of the chemical liquid L in a state of being pressed against the anilox roll 151.
- the introduction part 132 is a tubular joint that has one end connected to the main body part 131 and the other end connected to the extrusion hose 121 of the extrusion part 120, and connects the extrusion part 120 and the main body part 131.
- the chemical liquid L thus made can be introduced into the storage part 131 a of the main body part 131.
- the lead-out part 133 is configured to include a joint 133a, a hole 133b, and a tube 133c.
- the joint 133 a is a tubular joint that has one end connected to the main body portion 131 and the other end connected to the drawing hose 141 of the drawing portion 140 to connect the drawing portion 140 and the main body portion 131.
- the hole 133b is an opening formed on the upper surface of the joint 133a and having a predetermined diameter. That is, since the hole 133b is provided in the joint 133a, the chemical liquid L in the joint 133a comes into contact with the outside air. Therefore, even when the chemical liquid L is circulated by discharging a part of the chemical liquid L introduced from the introduction part 132 (derived from the outlet part 133) and circulating the chemical liquid L, the hole 133b causes the suction of the chemical liquid L. Since the chemical liquid L comes into contact with the outside air and the internal pressure can be brought close to the external pressure, fluctuations in the internal pressure in the doctor chamber 130 can be suppressed.
- the hole 133b may be formed on the upper surface of the main body 131 so as to communicate with the storage portion 131a, for example, as long as the internal pressure fluctuation in the doctor chamber 130 is suppressed.
- the tube 133c is a transparent or translucent tube-like member having a lower end connected to the hole 133b and extending upward. Therefore, when discharging a part of the chemical liquid L introduced from the introduction part 132 and circulating the chemical liquid L, it is visually confirmed whether the chemical liquid L flows into the tube 133c through the hole 133b. Can do. That is, when the inflow into the tube 133c is confirmed, the amount of the chemical liquid L stored in the storage portion 131a is excessive (the chemical liquid L is in an oversupply state with respect to the anilox roll 151). ) Therefore, the user who has visually confirmed the excessive state can solve the excessive state by, for example, adjusting the extrusion amount (flow rate) of the chemical liquid L by operating the adjustment valve 123. . Since the tube 133c is hollow and the upper end side is in contact with the outside air, the operation of the hole 133b is not offset.
- the chemical transfer unit 150 includes, for example, an anilox roll 151 to which the chemical solution L is supplied from the doctor chamber 130, and a printing plate roll 152 provided between the anilox roll 151 and a rotation unit 160 described later.
- the anilox roll 151 is provided so as to come into contact with the blades 131b and 131c of the doctor chamber 130, and is configured such that the chemical liquid L supplied from the opening of the storage portion 131a of the doctor chamber 130 is adsorbed on the peripheral surface. Further, since the anilox roll 151 has a cylindrical shape and is configured to be rotatable about an axis orthogonal to the XY plane, the chemical liquid L adsorbed on the peripheral surface as described above is rotated by the printing plate roll. 152 can be transferred.
- the printing plate roll 152 has a cylindrical shape whose peripheral surface is made of a rubber material, and the peripheral surfaces (points P1 and P2 shown in FIG. 14) are wound around the anilox roll 151 and the rotation unit 160 (the periphery of the left and right ends).
- the continuous sheet S2) is provided so as to contact the peripheral surface of the continuous sheet S2), and is configured to be rotatable around an axis orthogonal to the XY plane. Therefore, the plate roll 152 rotates in the r2 direction when the rotating portion 160 that contacts the left end rotates in the r1 direction, and rotates the anilox roll 151 that contacts the right end in the r1 direction.
- the printing plate roll 152 can acquire the chemical liquid L adsorbed on the peripheral surface of the anilox roll 151 at the point P2, transport it to the point P1 by rotation in the r2 direction, and transfer it to the laminated continuous sheet S2. it can. Therefore, even if the chemical liquid L adsorbed by the anilox roll 151 remains in a layered manner on the peripheral surface of the anilox roll 151, the chemical liquid L is transferred to the peripheral surface of the printing plate roll 152, so that the chemical liquid is applied to the laminated continuous sheet S2. L can be transferred uniformly.
- the rotation unit 160 is provided adjacent to the printing plate roll 152, and rotates around an axis orthogonal to the XY plane (for example, r1 direction in FIG. 14) when a driving force is applied from a motor (not shown) or the like. It is a cylindrical member that is configured to be capable of gripping the laminated continuous sheet S2 on the peripheral surface. Therefore, the rotating unit 160 rotates in the r1 direction so as to wind the supplied laminated continuous sheet S2 around the peripheral surface and rotate the printing plate roll 152 and the anilox roll 151 to convey them to the point P1 position. At the time, the chemical liquid L can be transferred from the printing plate roll 152.
- the rotation direction of the rotation unit 160 is the r1 direction in FIG.
- the rotation unit 160 may of course be configured to rotate in the r2 direction.
- the anilox roll 151 and the printing plate roll 152 rotate in the directions opposite to those in FIG. 14 (that is, the anilox roll 151: r2 direction, the printing plate roll 152: r1 direction).
- the supply pump 122 is driven, the chemical liquid L is extruded from the storage tank 110, and supplied to the storage part 131 a of the main body part 131 through the extrusion hose 121 and the introduction part 132 of the doctor chamber 130.
- the rotation unit 160 is rotated to supply the chemical solution L in the storage unit 131a to the anilox roll 151, and the chemical solution L is transferred onto the laminated continuous sheet S2 via the printing plate roll 152.
- the suction pump 142 is driven, and a part of the chemical liquid L in the storage part 131 a is discharged and circulated toward the storage tank 110 through the outlet part 133.
- the adjustment valve 123 is operated to adjust the flow rate of the chemical liquid L.
- the storage tank 110 that stores the chemical liquid L, and the extrusion liquid 121 stored in the main body 131 of the doctor chamber 130 are used to store the chemical liquid L stored in the storage tank 110.
- a suction pump 142 that sucks the chemical liquid L stored in the main body 131 of the doctor chamber 130 and discharges it to the storage tank 110 (external) via the pull-in hose 141.
- the chamber 130 connects the extrusion hose 121 and the main body 131, connects the introduction portion 132 for introducing the chemical L supplied by the supply pump 122 into the main body 131, and connects the drawing hose 141 and the main body 131.
- a tubular joint 133a for leading out a part of the chemical liquid L introduced into the main body 131 is provided.
- a detecting section 133 has a configured to include a hole 133b on the upper surface of the joint 133a of the outlet portion 133.
- a hole 133 b is provided on the upper surface of the joint 133 a of the outlet portion 133. Therefore, when a part of the chemical liquid L in the main body 131 is discharged using the suction pump 142, the chemical liquid L comes into contact with the outside air through the hole 133 b, and therefore, the inside of the doctor chamber 130 caused by the operation of the suction pump 142. Internal pressure fluctuation can be suppressed. Further, in the present invention, since the suction pump 142 is used when part of the chemical liquid L is discharged, there is no need for a flow path for the natural dropping of the chemical liquid L, and the installation position of the tank 110 is also a special doctor chamber 130. It is not limited to the upper part or the like.
- the chemical solution supply device 100 is a chemical solution supply device 100 that can suppress the internal pressure fluctuation in the doctor chamber 130 when sucking out the chemical solution L from the doctor chamber 130 and can be installed in a space-saving as much as possible.
- the doctor chamber 130 includes a transparent or translucent tube 133c having a lower end connected to the hole 133b and extending upward.
- the user who has visually confirmed the excessive state can solve the excessive state by, for example, operating the adjustment valve 123 to adjust the flow rate of the chemical liquid L. Further, by providing the tube 133c with the upper end (free end) facing downward, it is possible to prevent foreign matters such as paper dust from entering the hole 133b.
- the chemical solution supply apparatus 200 of the third embodiment in the doctor chamber format will be described with reference to FIG.
- the chemical solution L is oversupplied to the anilox roll 151 by visually confirming the inflow of the chemical solution L into the tube 133c connected to the hole 133b.
- the chemical solution supply apparatus 200 according to the present embodiment is configured to automatically determine whether or not the state has been reached and to notify the user of the determination result.
- differences from the doctor solution type embodiment 100 of the chemical solution supply apparatus 100 will be mainly described, and the same components are denoted by the same reference numerals and description thereof will be omitted. .
- the lead-out part 233 of the present embodiment includes a joint 133a, a hole 133b, a cylindrical part 133d provided above the hole 133b, and a sensor part attached to the cylindrical part 133d. 133e.
- the cylindrical part 133d is a cylindrical member whose upper end is fixedly connected to the peripheral surface of the hole 133b by welding or the like and extends upward.
- the sensor unit 133e includes a sensor 133f provided in the cylindrical portion 133d, and a notification unit 133g attached to the sensor 133f and performing notification in conjunction with detection of the sensor 133f.
- the sensor 133f includes, for example, a light emitting element (not shown) that emits light toward the detected object, and a light receiving element (not shown) that receives the reflected light from the detected object, and reflects the reflected light from the light receiving element. Based on the amount of received light, the sensor detects whether the height of the chemical liquid L flowing into the cylindrical portion 133d has reached the height position (y1 shown in FIG. 16) where the sensor 133f is provided.
- the notification unit 133g is a speaker or the like, and when the sensor 133f detects that the height of the chemical liquid L flowing into the cylindrical portion 133d has reached the height position where the sensor 133f is provided, The user is notified by voice.
- the sensor 133f determines whether or not the chemical liquid L flowing into the cylindrical part 133d has reached the height position. By detecting, it is possible to determine whether or not the amount of the chemical liquid L stored in the storage unit 131a is excessive (the chemical liquid L is in an excessive supply state with respect to the anilox roll 151). And, when the excessive state is reached, the user can know the fact by the notification unit 133g, for example, by operating the adjustment valve 123 to adjust the extrusion amount (flow rate) of the chemical liquid L, It becomes possible to eliminate the excessive state. Since the cylindrical portion 133d is hollow and the upper end side is in contact with the outside air, the action of the hole 133b is not offset.
- the supply pump 122 is driven, the chemical liquid L is extruded from the storage tank 110, and supplied to the storage part 131 a of the main body part 131 through the extrusion hose 121 and the introduction part 132 of the doctor chamber 130.
- the rotation unit 160 is rotated to supply the chemical solution L in the storage unit 131a to the anilox roll 151, and the chemical solution L is transferred onto the laminated continuous sheet S2 via the printing plate roll 152.
- the suction pump 142 is driven, and a part of the chemical liquid L in the storage part 131 a is discharged and circulated toward the storage tank 110 via the outlet part 233.
- the sensor 133f detects that the height of the chemical liquid L flowing into the cylindrical portion 133d has reached the height position where the sensor 133f is provided, and the notification portion 133g notifies the user.
- the adjustment valve 123 is operated to adjust the flow rate of the chemical liquid L.
- the doctor chamber 130 has a cylindrical cylindrical portion 133d that has a lower end connected to the peripheral surface of the hole 133b and extends upward, and a cylindrical shape.
- a sensor 133f that detects whether the height of the chemical liquid L that is provided in the portion 133d and flows into the cylindrical portion 133d has reached a predetermined height position (a height position where the sensor 133f is provided), and a sensor 133f
- a notification unit 133g is configured to notify when it is detected that the height of the chemical liquid L flowing into the cylindrical portion 133d has reached the predetermined height position.
- the chemical solution supply device 200 the same effect as the chemical solution supply device 100 is exhibited, and when the chemical solution L is circulated, the chemical solution L is applied to the anilox roll 151 by the sensor 133f and the notification unit 133g. It is possible to automatically determine whether or not the battery has reached an oversupply state, and to notify the user of the determination result, so that the burden on the user himself to perform the state determination is reduced.
- the chemical solution supply apparatus 300 according to the fourth embodiment in the doctor chamber format will be described with reference to FIG.
- the opening amount of the hole 133b is configured to be a fixed value, but in the chemical solution supply device 300 of the present embodiment, The opening amount can be adjusted.
- differences from the chemical solution supply apparatus 100 of the doctor chamber type embodiment 2 and the chemical solution supply apparatus 200 of the embodiment 3 will be mainly described. Reference numerals are assigned and description is omitted.
- the lead-out part 333 of the present embodiment includes a joint 133a, a cylindrical part 133d, a sensor part 133e, and an adjustment part 133h attached to the cylindrical part 133d.
- the adjusting unit 133h is, for example, a needle valve, and includes a hole 133j as an opening formed on the upper surface of the joint 133a, and a valve main body 133i that adjusts the opening amount of the hole 133j.
- the hole 133j has a shape in which an opening having a predetermined diameter is surrounded by an orifice.
- the valve body 133i is disposed above the opening of the hole 133j, and includes a needle shaft (not shown) whose tip is tapered and can be moved up and down.
- the needle shaft is moved up and down to change the orifice of the hole 133j. It is comprised so that the opening amount of the hole 133j can be adjusted according to the opening degree at the time of contacting.
- the opening amount of the hole 133j can be adjusted by the adjusting unit 133h, when the chemical liquid L is circulated, the opening amount of the hole 133j is changed according to the amount of fluctuation of the internal pressure in the doctor chamber 131. Can be adjusted appropriately. Therefore, for example, when the sensor part 133e detects that the height of the chemical liquid L flowing into the cylindrical part 133d has reached the height position where the sensor 133f is provided, the adjustment liquid 123 is operated to operate the chemical liquid L. In addition to coping with adjusting the amount of extrusion, the adjustment of the opening amount of the hole portion 133j by the adjusting portion 133h increases the air bleeding ability by the hole portion 133j (expands the contact area with the outside air).
- the supply pump 122 is driven, the chemical liquid L is extruded from the storage tank 110, and supplied to the storage part 131 a of the main body part 131 through the extrusion hose 121 and the introduction part 132 of the doctor chamber 130.
- the rotation unit 160 is rotated to supply the chemical solution L in the storage unit 131a to the anilox roll 151, and the chemical solution L is transferred onto the laminated continuous sheet S2 via the printing plate roll 152.
- the suction pump 142 is driven, and a part of the chemical L in the storage part 131a is discharged toward the storage tank 110 through the lead-out part 333 and circulated.
- the sensor 133f detects that the height of the chemical liquid L flowing into the cylindrical portion 133d has reached the height position where the sensor 133f is provided, and the notification unit 133g notifies the user. In such a case, it can be dealt with by operating the adjusting valve 123 or adjusting the opening amount of the hole 133j by the adjusting portion 133h.
- the doctor chamber 130 includes the adjustment unit 133h that adjusts the opening amount of the hole 133j.
- the opening amount of the hole 133j can be adjusted by the adjusting unit 133h.
- the internal pressure fluctuation in the doctor chamber 130 can be more suitably suppressed by appropriately adjusting the opening amount of the hole 133j in accordance with the internal pressure fluctuation amount in the doctor chamber 131.
- the doctor chamber 130 has a structure including only one introduction portion 132 connected to the extrusion hose 121 and one introduction portion 132 connected to the extrusion hose 121.
- FIG. It is good also as a structure like each example shown in.
- the doctor chamber 130 in the width direction D near the left and right ends of the doctor chamber 130 formed with a wide rectangular shape along the anilox roll 151 that is formed wide and rotates around the rotation axis R0. It is set as the structure which has the introduction part 132 connected to the extrusion hose 121 in each location. And it is also set as the structure where the one lead-out part 133 connected with the drawing hose 141 exists in the center part of this doctor chamber 130.
- FIG. 18A the doctor chamber 130 in the width direction D near the left and right ends of the doctor chamber 130 formed with a wide rectangular shape along the anilox roll 151 that is formed wide and rotates around the rotation axis R0. It is set as the structure which has the introduction part 132 connected to the extrusion hose 121 in each location. And it is also set as the structure where the one lead-out part 133 connected with the drawing hose 141 exists in the center part of this doctor chamber 130.
- the two extrusion hoses 121 are connected to the two introduction portions 132, respectively, and the chemical solution L is supplied from the vicinity of the left and right ends of the doctor chamber 130.
- the fresh chemical solution L can be supplied into the doctor chamber 130 on average, and the remaining chemical solution L is led out from the doctor chamber 130 from the central outlet unit 133.
- the doctor chamber 130 is formed in a wide rectangular shape and is formed in a wide rectangular shape along the anilox roll 151 that rotates about the rotation axis R0. It is set as the structure which has the introduction part 132 connected to the extrusion hose 121 in the location and the location of a center part, respectively. And it is also set as the structure where the two derivation
- two lead-out parts 133 are arranged between the three introduction parts 132, respectively, and the three extrusion hoses 121 each have three introduction parts 132.
- the doctor chamber 130 has an equal interval along the width direction D in which the outer frame is formed in a wide rectangular shape along the anilox roll 151 that is formed wide and rotates around the rotation axis R0. And it is set as the structure which has the introducing
- the chemical liquid L is supplied from the extrusion hose 121 to the plurality of introduction portions 132 arranged along the width direction D of the doctor chamber 130, and each of the introduction portions 132 is provided.
- the surplus chemical liquid L is led out from the doctor chamber 130 from a plurality of the outlets 133 adjacent to each other. Therefore, also in this example, the fresh chemical liquid L from the storage tank 110 can be supplied into the doctor chamber 130 on average, and the surplus chemical liquid L from the derivation unit 133 is led out from the doctor chamber 130.
- an air filter may be installed on the upper portion of the hole 133b so as to prevent foreign matters such as paper dust from entering the hole 133b.
- the hole 133b may be provided on the side surface of the main body 131 as long as it is above the liquid level of the chemical liquid L in the reservoir 131a.
- the chemical application unit 53A which is one of the flexographic printing systems, is rotatably installed while a squeezing roll 62A, which is a dip roll, is immersed in a chemical solution tank 66A containing a chemical solution.
- a squeezing roll 62A which is a dip roll
- an anilox roll 63A is rotatably installed in contact with the squeezing roll 62A outside the chemical tank 66A, and the printing plate roll 64A in contact with the anilox roll 63A and in contact with one surface of the laminated continuous sheet S2 is rotatable.
- the pressure is applied to the laminated continuous sheet S2 by the elastic rolls 65A that are opposed to each other with the laminated continuous sheet S2 interposed therebetween.
- the chemical solution application portion 53A is positioned on the surface side of the laminated continuous sheet S2 that faces a roller 54A of a contact embossing means 54 described later and also faces the winding drum 56A.
- the other chemical application portion 53B in the flexographic printing format is rotatably installed while a squeezing roll 62B as a dip roll is immersed in a chemical liquid tank 66B containing the chemical liquid. ing.
- an anilox roll 63B is rotatably installed in contact with the squeeze roll 62B outside the chemical tank 66B, and a printing plate roll 64B that is in contact with the anilox roll 63B and in contact with the other surface of the laminated continuous sheet S2 is also provided.
- Pressure is applied to the laminated continuous sheet S2 with the elastic roll 65B that is rotatably installed and is opposed to the laminated continuous sheet S2.
- the chemical solution application portion 53B is positioned on the other surface side of the laminated continuous sheet S2 that is not opposed to the roller 54A and is also not opposed to the winding drum 56A.
- the chemical solution is applied to both surfaces of the laminated continuous sheet S2 from the chemical solution application unit 53A and the chemical solution application unit 53B.
- the coating amount on the surface side of the laminated continuous sheet S2 facing the roller 54A by the chemical solution application unit 53A Can be applied to the laminated continuous sheet S2 from both sides of the laminated continuous sheet S2, while reducing the amount of the liquid applied to the other surface side by the chemical applying unit 53B.
- the plate is a resin using the flexo format and is elastic, even if there are some irregularities in the laminated continuous sheet S2, it can be adjusted by the printing pressure. Wrinkles are less likely to enter the laminated continuous sheet S ⁇ b> 2 than when applied with such a metal roll.
- the coating amount can be stabilized even when the processing speed is high, and a wide range of chemical viscosity can be stably applied with one roll. Specifically, even when the continuous chemical sheet S2 is conveyed at a speed of 700 m / min or more and the chemical solution is applied at a coating amount of 2.5 to 5 g / m 2 , the coating is uniform and meandering. It becomes possible to wind up the laminated continuous sheet S2.
- the one-roll transfer format in the flexographic printing method is obtained by omitting the squeezing rolls 62A and 62B from the flexo two-roll transfer format described above.
- the anilox rolls 63A and 63B are rotatably installed while being immersed in the chemical liquid tanks 66A and 66B, respectively.
- a doctor blade (not shown) for scraping off the chemical solution on the surfaces of the anilox rolls 63A and 63B may be installed on the anilox rolls 63A and 63B.
- Such a flexo 1-roll transfer format has the advantage that the maintenance is relatively easy, and the advantage that the state of contamination of the blades and foreign matters such as paper dust in the chemical solution can be easily observed.
- the production facility X1 for the secondary paper roll for tissue paper products can be provided with contact embossing means 54 for imparting contact embossing to the laminated continuous sheet S2.
- a receiving roll 54B which is a metal roll or an elastic roll, and a metal, hard roller 54A having a fine convex portion 54C on the surface have a predetermined pressure.
- the outer peripheral surfaces are in contact with each other, and are installed so as to be rotatable.
- the laminated continuous sheet S2 is conveyed while sandwiching the laminated continuous sheet S2 between the convex portion 54C and the receiving roll 54B.
- line-shaped contact embossing CE for preventing delamination along the continuous direction of the laminated continuous sheet S2 is applied to the laminated continuous sheet S2.
- the winding means 56 mentioned above winds up the lamination
- the contact embossing CE By providing the contact embossing CE in this way, delamination of the laminated continuous sheet S2 formed by laminating a plurality of primary continuous sheets (S11, S12 in the illustrated example) is prevented.
- the contact embossing CE is formed so as to be positioned on both sides in the width direction of the tissue paper product so that the end portion of the tissue paper product is hardly delaminated.
- the location where the contact embossing means 54 is installed is not particularly limited, but it is a stage subsequent to the chemical solution applying means 53 and preceding the slit means 55, and a stage subsequent to the calendar means 52 and preceding the chemical solution applying means 53. Can be considered. That is, it suffices if it is located at a position after the calendar means 52 and before the slit means 55.
- the contact embossing CE is applied within 0.3 to 2.5 seconds, preferably within 0.3 to 1.0 seconds after the chemical solution is applied to the laminated continuous sheet S2. It is also proposed to give If the time is less than 0.3 seconds, the chemical solution is not sufficiently absorbed by the base paper, so that the chemical solution adheres to the receiving roll 54B and the roller 54A and the paper is cut off, or the receiving roll 54B and the roller 54A are contaminated. If the time exceeds 2.5 seconds, the laminated continuous sheet S2 coated with the chemical solution is stretched, so that subsequent process wrinkles are less likely to occur, making it difficult to obtain a bulky tissue paper product. In addition, when the laminated continuous sheet S2 is fully stretched, there is no stretch that can cope with draw fluctuations, and the tensile strength is reduced due to moisture absorption and water absorption.
- a metal and hard roller 54A having a fine convex portion 54C on the surface is used as a roller, but a line-shaped joint that prevents delamination from the laminated continuous sheet S2.
- a roller having a fine needle-like member on the surface can be used as the roller.
- the means for joining is not limited to the above example, and the tip shape of the convex portion may be a point, square, rectangular, circular, elliptical shape, etc. A tip having a slender linear shape or a thin and slanting linear shape may be used as the roller.
- the arrangement of the protrusions may be equally spaced, but may not be staggered or evenly spaced.
- the protrusions in a row and continuously providing contact embossing, It is also conceivable to arrange the parts in two or more rows. Then, a plurality of groups in which convex portions are arranged so as to provide a plurality of rows of contact embossing closely may be arranged to provide a plurality of contact embossing groups.
- a tension control means 57 for controlling the tension of the laminated continuous sheet S2 may be provided between the secondary chemical solution applying means 53 and the contact embossing means 54.
- the tension control means 57 is formed of a cylindrical roll and can be moved up and down in accordance with the bending state of the laminated continuous sheet S2. Further, when the tension control means 57 is provided, it is also proposed to arrange the calendar means 52 before the secondary chemical solution applying means 53 and after the tension control means 57.
- the calendar roll 52A is separated from the receiving roll 52B by a distance equal to or greater than the paper thickness of the laminated continuous sheet S2 to form the laminated continuous sheet S2.
- it is also proposed to pass through without performing a smoothing process second manufacturing equipment and manufacturing method for a secondary raw roll for tissue paper products).
- the raw material pulp of primary continuous sheet S11, S12 is not specifically limited, According to the use of tissue paper products, an appropriate raw material pulp can be selected and used.
- the raw material pulp include wood pulp, non-wood pulp, synthetic pulp, and waste paper pulp. More specifically, ground pulp (GP), stone grand pulp (SGP), refiner grand wood pulp (RGP), and processed pulp.
- the raw material pulp is preferably a blend of NBKP and LBKP.
- Waste paper pulp may be blended as appropriate, but in terms of texture and the like, it may be composed only of NBKP and LBKP.
- the primary continuous sheets S11 and S12 have a basis weight according to JIS P 8124 of 10 to 25 g / m 2 , preferably 12 to 20 g / m 2, and more preferably 13 to 16 g / m 2 .
- the basis weight is less than 10 g / m 2 , it is preferable in terms of softness, but an appropriate strength cannot be ensured.
- the basis weight exceeds 25 g / m 2 , it becomes too hard and the touch is deteriorated.
- the paper thickness (measured with a Peacock manufactured by Ozaki Seisakusho) is 80 to 250 ⁇ m, preferably 100 to 200 ⁇ m, more preferably 130 to 180 ⁇ m per ply.
- the primary continuous sheets S11 and S12 preferably have a crepe rate of 10 to 30%, more preferably 12 to 25%, and particularly preferably 13 to 20%.
- the crepe rate is less than 10%, it becomes a tissue paper product that is easy to break during processing and has little stretch and is not stiff.
- the crepe rate is more than 30%, it is difficult to control the tension of the sheet at the time of processing, and the paper tends to be cut off, and wrinkles occur after production, resulting in a poor-looking tissue paper product.
- the primary continuous sheets S11 and S12 have a dry tensile strength (hereinafter also referred to as dry paper strength) specified in JIS P 8113 of 2 to 200 p-200 cN / 25 mm, preferably 250 to 600 cN / 25 mm.
- the lateral direction is preferably 300 to 600 cN / 25 mm, while the transverse direction is 100 to 300 cN / 25 mm, preferably 130 to 270 cN / 25 mm, particularly preferably 150 to 250 cN / 25 mm with two plies. If the dry tensile strength of the base paper is too low, troubles such as paper breakage and elongation at the time of production and use are likely to occur, and if it is too high, the touch becomes stiff when used.
- paper strengths can be adjusted by a known method.
- a dry paper strength enhancer is internally added (added to a stage before the dryer part, for example, pulp slurry) to reduce pulp freeness (for example, about 30 to 40 ml).
- a method of increasing (for example, 50% or more) the NBKP compounding ratio can be appropriately combined.
- the dry paper strength agent starch, polyacrylamide, CMC (carboxymethyl cellulose) or a salt thereof such as sodium carboxymethyl cellulose, carboxymethyl cellulose calcium, carboxymethyl cellulose zinc and the like can be used.
- the wet paper strength agent polyamide polyamine epichlorohydrin resin, urea resin, acid colloid / melamine resin, thermal crosslinkability imparting PAM and the like can be used.
- the addition amount can be about 5 to 20 kg / t by weight ratio to the pulp slurry. Further, when the dry paper strength agent is internally added, the addition amount can be about 0.5 to 1.0 kg / t in terms of the weight ratio to the pulp slurry.
- laminated continuous sheet S2 are laminated in the continuous direction to form a laminated continuous sheet S2 (lamination step), and a chemical solution is applied to the laminated continuous sheet S2 by a pair of primary chemical spray application means 40 (primary chemical solution spraying step). Then, a chemical solution is applied by a pair of secondary chemical solution application means 53 (secondary chemical solution application step), and the laminated continuous sheet S2 is made to have a product width of tissue paper products or a multiple of the width by the slit means 55. Next, the laminated continuous sheet S2 slit in the slit process is wound up coaxially, and the product width of the tissue paper product or a plurality thereof. A plurality of secondary master roll R of width, formed by the winding means 56.
- a smoothing step of smoothing the laminated continuous sheet S2 with a pair of calendar means 52 can be provided in the preceding stage.
- a contact embossing step for performing line-shaped contact embossing for preventing delamination by the contact embossing means 54 on the laminated continuous sheet S2 can be provided after the chemical solution applying step and before the slitting step.
- the processing speed is 100 to 1100 m / min, preferably 350 to 1050 m / min, more preferably 450 to 1000 m. / Min. If it is less than 100 m / min, the productivity is low. On the other hand, if it exceeds 1100 m / min, the frequency of the laminated continuous sheet S2 is increased, and the chemical solution application process does not transfer the chemical solution of the plate roll or anilox roll. Since it tends to be stable, uneven coating may occur.
- the gravure printing method is, for example, as shown in FIG.
- the dip roll 71 picks up a certain amount of chemical solution from the chemical solution storage tray 70, and the chemical solution remaining in the cell of the dip roll 71 is transferred to the gravure roll 72.
- the chemical liquid transferred to the gravure roll 72 is simultaneously transferred to the surface of the laminated sheet S2 using the impression cylinder 74 as a backup while being scraped off by the scraping blade 73.
- the dot density of the gravure roll 72 can be selected as appropriate.
- Multi-stand type inter folder A large number of secondary raw rolls R manufactured by the manufacturing equipment and manufacturing method for secondary paper rolls for tissue paper products described above are set in a multi-stand type interfolder, and the secondary raw rolls R are set to the secondary raw rolls R. A tissue paper bundle is manufactured by unfolding and folding the next continuous sheet.
- the multi-stand type interfolder will be described.
- FIG. 2 and 3 show an example of the multi-stand type interfolder.
- Reference numeral 2 in the figure denotes secondary raw rolls R, R... Set on a secondary raw roll support portion (not shown) of the multi-stand type interfolder 1.
- the secondary raw rolls R, R... Are set side by side in a direction (the horizontal direction in FIG. 2 and the front-to-back direction in FIG. 3) perpendicular to the illustrated plane.
- Each secondary raw roll R has slits in the width of tissue paper product in the above-described manufacturing equipment and manufacturing method of the secondary raw roll for tissue paper products. It is wound and set in double width.
- the continuous belt-like secondary continuous sheets 3A and 3B unwound from the secondary raw roll R are guided by guide means such as guide rollers G1 and G1 and sent to the folding mechanism section 20.
- the folding mechanism unit 20 is provided with a folded plate group 21 in which a necessary number of folded plates P, P.
- guide rollers G2, G2 and guide round bar members G3, G3 for guiding a pair of continuous secondary continuous sheets 3A or 3B are respectively provided at appropriate positions.
- a conveyor 22 is provided that receives and conveys the laminated band 30 that is stacked while being folded.
- a folding mechanism using this kind of folded plates P, P... is a mechanism known from, for example, US Pat. As shown in FIG. 5, this type of folding mechanism folds each continuous secondary continuous sheet 3A, 3B... Into a Z-shape and side edges of adjacent secondary continuous sheets 3A, 3B. Stack the parts together.
- FIGS. 7 to 10 show in detail the portions of the folding mechanism 20 that are particularly related to the folded plate P.
- the continuous secondary continuous sheets 3A and 3B are guided by the guide round bar members G3 and G3 while being shifted in position so that the side end portions do not overlap each other.
- a continuous secondary continuous sheet that is overlapped on the lower side when guided by the folded plate P is defined as a first continuous secondary continuous sheet 3A, and a continuous secondary continuous sheet that is overlapped on the upper side is a second continuous sheet.
- these continuous secondary sheets 3A and 3B are second continuous secondary sheets of the first continuous secondary continuous sheet 3A.
- the side end e1 that does not overlap the sheet 3B is folded back to the upper side of the second continuous secondary continuous sheet 3B by the side plate P1 of the folded plate P, and as shown in FIGS.
- the side end e2 of the continuous secondary continuous sheet 3B that does not overlap with the first continuous secondary continuous sheet 3A is folded downward so as to be drawn under the folded plate P from the slit P2 of the folded plate P. .
- the side end portion e3 (e1) of the continuous secondary continuous sheet 3A stacked while being folded in the upstream folded plate P is second from the slit P2 of the folded plate P.
- the folded portions of the continuous secondary sheet 3B are guided between the folded portions of the continuous secondary sheet 3B.
- each continuous secondary continuous sheet 3A, 3B... Is folded into a Z-shape and the side edges of adjacent continuous secondary continuous sheets 3A and 3B are crossed together.
- the side edge of the next tissue paper is pulled out.
- the laminated band 30 obtained by the multi-stand type interfolder 1 as described above is cut (cut) at a predetermined interval in the flow direction FL by the subsequent cutting means 41, and the tissue is cut.
- the tissue paper bundle 30a is stored in the storage box B in the subsequent equipment as shown in FIG. 6A.
- the paper direction of the laminated strip 30 is the vertical direction (MD direction) along the flow direction FL, and the horizontal direction along the direction orthogonal to the flow direction.
- Direction (CD direction) the direction of the paper of the tissue paper constituting the tissue paper bundle 30a obtained by cutting the laminated band 30 into a predetermined length is the extension of the folded portion of the tissue paper as shown in FIG.
- the vertical direction (MD direction) is along the existing direction
- the horizontal direction (CD direction) is along the direction orthogonal to the extending direction of the folded portion of the tissue paper.
- FIG. 6B shows an example of a product in which the tissue paper bundle 30a is stored in the storage box B.
- a perforation M is provided on the upper surface of the storage box B, and a part of the upper surface of the storage box B is broken by the perforation M so that the upper surface of the storage box B is opened.
- the opening is covered with a film F having a slit at the center, and the tissue paper T can be taken out through the slit provided in the film F.
- the direction of the paper of the tissue paper constituting the tissue paper bundle 30a is the horizontal direction (CD direction) along the direction orthogonal to the extending direction of the folded portion of the tissue paper.
- the pulling direction is along the lateral direction (CD direction) of the tissue paper T.
- the contact embossing means 54 can also be installed between the calendar means 52 and the secondary chemical solution applying means 53.
- the manufacturing method of the secondary raw material roll for tissue paper products using such manufacturing equipment X3 of the secondary raw material roll for tissue paper products is as follows. As shown in FIG. 20, in the method for manufacturing a secondary paper roll for tissue paper products according to the present embodiment, a primary continuous sheet (S11, S12 in the illustrated example) fed from a plurality of primary paper rolls by the ply means 51.
- laminated continuous sheet S2 laminated continuous sheet S2
- laminated continuous sheet S2 is smoothed by a pair of calendar means 52 (smoothing step), and the smoothed lamination is performed.
- Contact embossing is applied to the continuous sheet S2 by the contact embossing means 54 (contact embossing process), and a pair of primary chemical spraying means 40 and secondary chemical liquid application are applied to the laminated continuous sheet S2 provided with contact embossing.
- the chemical solution is applied by means 53 (chemical solution application step), and the laminated continuous sheet S2 is applied to the tissue paper product by the slit means 55.
- the product is slit so as to have a product width or a multiple of the product width (slit process), and then the laminated continuous sheet S2 slit in the slit process is wound coaxially to produce a product width of the tissue paper product or a plurality of product widths of the product.
- the secondary web roll R is formed by the winding means 56.
- the laminated continuous sheet S2 is directly transferred from the contact embossing means 54 to the slit means 55, and the primary It is only necessary to flow the laminated continuous sheet S2 without passing through the chemical spraying means 40 and the secondary chemical application means 53.
- the chemical application steps 40 and 53 are installed between the ply means 51 and the calender means 52, and the calender means 52 is used as a step between the secondary chemical application means 53 and the contact embossing means 54. It can also be installed.
- the manufacturing method of the secondary raw material roll for tissue paper products using such manufacturing equipment X4 of the secondary raw material roll for tissue paper products is as follows. As shown in FIG. 21, in the manufacturing method of the secondary paper roll for tissue paper products which concerns on this form, the primary continuous sheet (S11, S12 in the example of illustration) which is drawn
- the laminated continuous sheet S2 is slit by means 55 so as to have a product width of tissue paper product or a multiple of the width (slit process), To a plurality of secondary master roll R of product width or a multiple width of tissue paper product wound laminated continuous sheet S2, the slit coaxially slitting step, formed by the winding means 56.
- stacking continuous sheet S2 is transferred to the calender means 52 from the ply means 51, and chemical
- a pair of calendar means 52 can be arranged along the vertical direction, and a pair of secondary chemical solution applying means 53 can be arranged along the vertical direction.
- the manufacturing method of the secondary raw material roll for tissue paper products using such manufacturing equipment X5 of the secondary raw material roll for tissue paper products is as follows. As shown in FIG.
- the primary continuous sheet (S11, S12 in the example of illustration) paid out from the several primary raw material roll by the ply means 51 Is laminated along the continuous direction to form a laminated continuous sheet S2 (lamination step), and the laminated continuous sheet S2 is smoothed by a pair of calendar means 52 (smoothing step), and the laminated continuous sheet S2
- a chemical solution is applied by the pair of primary chemical solution spraying means 40 and the secondary chemical solution application means 53 (chemical solution application process)
- contact embossing is applied to the laminated continuous sheet S2 by the contact embossing means 54 (contact embossing process).
- the laminated continuous sheet S2 slit in the slitting process is wound up coaxially, and the product width of the tissue paper product or a plurality of secondary raw rolls R having a plurality of widths thereof are taken up by the winding means 56.
- the laminated continuous sheet S2 is directly transferred from the calendar means 52 to the contact embossing means 54, and the chemical solution application means. It is only necessary to flow the laminated continuous sheet S2 without passing through 40, 53.
- tissue paper product (Example) was manufactured by setting in a multi-stand type interfolder.
- Example 1 the primary chemical solution spraying by the rotor dampening method is performed, and then the secondary chemical solution application by the flexographic printing method is performed.
- Primary chemical spray 1.0 g / m 2 per side.
- Secondary chemical application 1.0 g / m 2 per side. Accordingly, the chemical application amount in the total of two plies is 4.0 g / m 2 .
- Example 2 the primary chemical solution spraying by the rotor dampening method is performed, and then the secondary chemical solution application by the flexographic printing method is performed.
- Secondary chemical application 1.4 g / m 2 per side.
- the chemical application amount in the total of two plies is 4.0 g / m 2 .
- the primary chemical solution spraying by the rotor dampening method is performed, and then the secondary chemical solution application by the flexographic printing method is performed.
- Primary chemical spray 1.6 g / m 2 per side.
- Secondary chemical solution application : 0.4 g / m 2 per side.
- the chemical application amount in the total of two plies is 4.0 g / m 2 .
- the primary chemical solution spraying by the nozzle method is performed, and then the secondary chemical solution application by the flexographic printing method is performed.
- the chemical application amount in the total of two plies is 4.0 g / m 2 .
- Example 5 the first chemical solution spraying by the rotor dampening method is performed, and then the second chemical solution application by the gravure printing method is performed.
- the chemical application amount in the total of two plies is 4.0 g / m 2 .
- the chemical solution was applied only once by the flexographic printing method with a ply machine without applying the two-step chemical solution.
- the coating amount is 2.0 g / m 2 per side, and the chemical application amount in the total of two plies is 4.0 g / m 2 .
- the primary chemical solution was applied by a flexographic printing method on a ply machine at a coating amount of 1.0 g / m 2 per side (2.0 g / m 2 on both sides), followed by flexo printing.
- the secondary chemical solution application by the method is performed by a two-step application method in which the application amount is 1.0 g / m 2 per side (2.0 g / m 2 on both sides).
- the chemical application amount in the total of two plies is 4.0 g / m 2 .
- the pulp composing the base paper was NBKP 30% and LBKP 70%. Further, a crepe rate of 19% was used.
- medical solution of the same composition was prepared so that a viscosity might be 110 mPa * s (40 degreeC).
- Reference Example 1 is a non-humidifying general-purpose tissue paper marketed by the applicant, and Reference Example 2 is a lotion-type tissue paper marketed by the applicant, while Reference Example 3 and Reference Example 4 are commercially available from other companies. Because it is a product, it contains unknown content.
- Paper thickness Measured using a dial thickness gauge (thickness measuring instrument) “PEACOCK G type” (manufactured by Ozaki Seisakusho) under the conditions of JIS P 8127 (1998).
- Product density The product density is the paper (2 ply) of tissue paper by “PEACOCK G type”, which is a doubled value (C) of the tissue paper product tsubo conditioned under JIS P 8111 conditions. The value is divided by the thickness (D), and the unit is expressed in g / cm 3 and three decimal places.
- Dry tensile strength Measured according to the tensile test method of JIS P 8113 (1998).
- Wet tensile strength Measured according to JIS P 8135 (1998).
- Elongation rate Measured using “Universal Tensile and Compression Tester TG-200N” manufactured by Minebea Co., Ltd.
- Softness Measured based on the handle ohmmeter method according to JIS L 1096 E method. However, the test piece was 100 mm ⁇ 100 mm in size, and the clearance was 5 mm. The measurement was performed 5 times each in the vertical direction and the horizontal direction with 1 ply, and the average value of all 10 times was defined as one decimal point and expressed in units of cN / 100 mm.
- Coefficient of static friction Measured by the following method according to JIS P 8147 (1998). Stick the tissue paper peeled on one ply to the acrylic plate so that the front side of the paper is on the outside. Wrap tissue paper around a 100 g weight with 2 plies and place it on the tissue on the acrylic plate. Tilt the acrylic plate and measure the angle at which the weight slides down. The angle is measured 8 times, the average angle is calculated, and the tangent value is taken as the static friction coefficient.
- MMD is an average deviation MMD of the static friction coefficient. MMD is one of the indices of smoothness. The smaller the numerical value, the smoother, and the larger the numerical value, the less smooth. As a method for measuring the MMD value, as shown in FIG.
- a tension of 20 g / cm is applied to the contact surface of the friction element 212 in a predetermined direction (downward and rightward in FIG. 23A). While being brought into contact with the surface of the tissue paper 211, which is the measured sample, at a contact pressure of 25 g, it is moved 2 cm at a speed of 0.1 cm / s in the same direction as the direction in which the tension is applied.
- the friction element 212 includes 20 piano wires P having a diameter of 0.5 mm adjacent to each other, and has a contact surface formed so that the length and the width are both 10 mm.
- the contact surface is formed with a unit bulging portion whose tip is formed of 20 piano wires P (curvature radius 0.25 mm).
- FIG. 23 (a) schematically shows the friction element 212
- FIG. 23 (b) shows an enlarged view of a portion surrounded by a dashed line in FIG. 23 (a).
- Moisture content Measured according to JIS P 8124 (1998).
- Chemical solution content The chemical solution content indicates the content of the chemical component in the dry state (absolutely dry) contained in the unit area of tissue paper in the standard state of JIS P 8111.
- the content of components other than moisture in the chemical solution shall be indicated.
- the unit area of the tissue paper is an area of the plyed sheet viewed from a viewpoint perpendicular to the plane, and does not mean the total area of each plyed sheet and its front and back surfaces.
- Chemical liquid content ratio is a chemical liquid contained in a predetermined mass of tissue paper product with the tissue paper product having a predetermined mass conditioned under JIS P 8111 as the denominator (A) (g).
- the ratio of (B) divided by (A) is expressed as (%), with the mass (B) (g) excluding the moisture of (b) as a molecule.
- tissue-coated tissue paper is also evaluated for the presence or absence of a sticky feeling, and the evaluation criteria are “ ⁇ ” for “less sticky” and “ ⁇ ” for “obviously sticky”. did.
- variation in sensory evaluation refers to whether each sensory evaluation is stable in the width direction and the flow direction, in the width direction and the flow direction of the sheet, and the sampling position of the sample provided to the 87 consumers. It was investigated by correlation. The evaluation is based on the stability in the width direction and the flow direction of each sensory evaluation in Comparative Example 1, and in the case of Comparative Example 1, “1” is excellent, “2” is excellent, and “3” is remarkably excellent. ".
- Example 1 to Example 5 the production of paper dust is less at the production site than in the flexo-type two-stage application of Comparative Example 2, It was found that stable production was possible. Further, in the comparison between the example and the comparative example 1, it can be seen that the example has less variation in sensory evaluation. Although there is little variation in the sensory evaluation in the flexographic two-stage coating of Comparative Example 2, when compared with the flexographic two-stage coating of Comparative Example 2, the “thickness” is highly evaluated. In comparison between Examples 1 to 5, it can be seen that the application amount in the primary chemical solution spraying means and the secondary chemical solution application means is preferably 0.5 to 1.5 g / m 2 .
- invention 1 A method for producing a secondary web roll for tissue paper products, wherein a plurality of secondary web rolls for tissue paper products are continuously produced from the primary web roll, Laminating means for laminating a primary continuous sheet fed from a plurality of primary raw rolls along the continuous direction to form a laminated continuous sheet; A primary chemical solution spraying means for applying a chemical solution in a sprayed state to each of the continuous sheets; Thereafter, a secondary chemical solution applying means for applying a chemical solution to each continuous sheet by a flexographic printing method or a gravure printing method, Slitting means for slitting the laminated continuous sheet so as to be a product width of tissue paper products or a multiple of the width, Tissue paper product comprising winding means for winding each slit continuous sheet coaxially to form a product width of the tissue paper product or a plurality of secondary raw rolls of multiple widths thereof. Secondary roll roll manufacturing equipment.
- tissue paper product according to claim 2 further comprising contact embossing means for applying line-shaped contact embossing for preventing delamination of the laminated continuous sheet between the secondary chemical solution applying means and the slit means.
- contact embossing means for applying line-shaped contact embossing for preventing delamination of the laminated continuous sheet between the secondary chemical solution applying means and the slit means.
- invention 5 The apparatus for producing a secondary raw roll for tissue paper products according to the first aspect, wherein the application of the first chemical solution is by a nozzle spray method.
- invention 7 A plurality of the secondary web rolls obtained by the invention of any one of the above inventions are prepared, and these are arranged along the line direction in a multi-stand type interfolder, and a plurality of secondary rolls fed out from each secondary web roll The secondary continuous sheet is transported along the continuous direction and stacked while being folded in the transport process, and then a predetermined number of laminated sheets are cut to a predetermined length to form a tissue paper bundle, and this stack is placed in a storage box.
- An apparatus for producing tissue paper products characterized by storing.
- the present invention can be applied to the manufacture of secondary rolls for tissue paper products used in multi-stand type interfolders and the manufacture of tissue paper products using multi-stand type inter-folders.
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Abstract
Description
このようなインターフォルダの例として、下記特許文献1、2に開示されるようなマルチスタンド式(多連式)インターフォルダや、下記特許文献3、4に開示されるようなロータリー式インターフォルダなどが知られている。
マルチスタンド式インターフォルダを用いた製造方法の従来例としては、次のようなものがある。すなわち、抄紙設備において薄葉紙を抄造して巻き取ることで一次原反ロール(一般にジャンボロールともいわれている)を製造し、次いで、この一次原反ロールをプライマシンにセットし、複数の一次原反ロールから繰り出した一次連続シートを重ね合わせて巻き取ると共にスリット(幅方向にティシュペーパー製品の製品幅又はその複数倍幅に分割)し、複数のプライからなる二次原反ロールを製造する。
プライマシンで製造された二次原反ロールは、プライマシンから取り出された後、必要な数だけマルチスタンド式インターフォルダにセットされる。次いで、二次原反ロールから二次連続シートを繰り出して、折り畳み機構部へ送り込み、ここで折り畳みながら積み重ね、その後、所定の長さに切断されてティシュペーパー束とし、収納箱内に収納する。
このようなマルチスタンド式インターフォルダを用いた製造方法は、他の折り畳み設備を用いた製造方法に比べて、多数(通常80~100基)の折り畳み機構を有しているため生産性が高いという利点を有している。
しかし、マルチスタンド式インターフォルダを用いた製造方法で製造する場合、プライマシンやマルチスタンド式インターフォルダとは別に薬液付与工程を設けると、原反の移送の手間や多大な設備コストがかかってしまうという問題がある。また、薬液付与工程をマルチスタンド式インターフォルダ内に設けると、薬液を付与するティシュペーパー製品を製造するラインと、薬液を付与しないティシュペーパー製品を製造するラインとを別々に設ける必要があった。
〔請求項1記載の発明〕
一次原反ロールから連続的にティシュペーパー製品用の複数の二次原反ロールを製造するティシュペーパー製品用二次原反ロールの製造方法であって、
複数の一次原反ロールから繰り出される一次連続シートをその連続方向に沿って積層して積層連続シートとする積層工程と、
前記連続シートのそれぞれに対して薬液を噴霧状態で付与する第一次薬液噴霧工程と、
その後に、それぞれの連続シートに対して薬液をフレキソ印刷方式又はグラビア印刷方式によって塗布する第二次薬液塗布工程と、
積層連続シートをティシュペーパー製品の製品幅又はその複数倍幅となるようにスリットするスリット工程と、
スリットされた各積層連続シートを同軸で巻取ってティシュペーパー製品の製品幅又はその複数倍幅の複数の二次原反ロールを形成する巻取り工程と、を有することを特徴とするティシュペーパー製品用二次原反ロールの製造方法。
前記第一次薬液噴霧工程が、前記積層工程の後であって、且つ、前記スリット工程の前に行われる、請求項1に記載のティシュペーパー製品用二次原反ロールの製造方法。
前記積層工程と前記第一次薬液噴霧工程との間に、カレンダーにて平滑化処理する平滑化工程を有する、請求項2に記載のティシュペーパー製品用二次原反ロールの製造方法。
前記第二次薬液塗布工程と前記スリット工程との間に、前記積層連続シートに対して層間剥離を防止するライン状のコンタクトエンボスを施すコンタクトエンボス工程を有する、請求項2に記載のティシュペーパー製品用二次原反ロールの製造方法。
前記第一次薬液の付与がノズル式噴霧方式によるものである、請求項1に記載のティシュペーパー製品用二次原反ロールの製造方法。
前記第一次薬液の付与がローターダンプニング噴霧方式によるものである、請求項1に記載のティシュペーパー製品用二次原反ロールの製造方法。
前記請求項のいずれか1項の請求項によって得られた前記二次原反ロールを多数用意し、これらをマルチスタンド式インターフォルダにおいてライン方向に沿って配置し、各二次原反ロールから繰り出される複数の二次連続シートをその連続方向に沿って移送すると共に、その移送過程で折り畳みながら積み重ね、その後、所定枚数の積層シートを所定長さ切断してティシュペーパー束とし、この積層を収納箱内に収納することを特徴とするティシュペーパー製品の製造方法。
しかも、第一次薬液付与を薬液噴霧によって行なうようにしている。薬液噴霧ではシートの圧着形態での摩擦が生じないで、紙粉の発生がなく、安定した塗布が可能である。また、繊維間隙を潰すことがないので、嵩高のティシュペーパーを得ることができる。
加えて1回目の薬液噴霧により適度な水分を持つことにより紙粉は抑えられ、2回目の転写式塗布において紙粉の発生が抑制される効果がある。
なお、第二次薬液塗布工程における薬液塗布は、特にドクターチャンバーを用いたフレキソ印刷方式とすることが好ましい。ドクターチャンバー形式は、アニロックスロール(転写用凹ロール)の表面に直接、薬液を塗工し皮膜を作るもので、薬液に紙粉やエアーが混入しにくく薬液の物性が安定しやすい特徴があり、且つ、アニロックスロールから転写される薬液が均一であるため、低量塗布の場合であっても好適に塗布することができる。
グラビア印刷方式はフレキソ印刷方式と比較し、ロールが金属製であるために塗布量調整の簡便性に劣るものの、ほぼ同様の塗布量及び幅方向に塗布安定性を示すので、グラビア印刷方式も採用できる。
〔一次原反ロールの製造設備・方法〕
一次原反ロールの製造設備及び製造方法の一例を、図1を参照しつつ説明する。
図1に示すように、予め調整された紙料を、ヘッドボックス301からワイヤーパート311に供給することで湿紙Wを形成し(フォーミング工程)、この湿紙Wを、プレスパート321のフェルト322に転送した後、一対の脱水ロール323、324によって挟持することで脱水する(脱水工程)。次いで、この脱水された湿紙Wを、ヤンキードライヤーフード332で一部覆われたヤンキードライヤー331の表面に付着させて乾燥し、ドクターブレード333によって引き剥がして乾紙S1とする(乾燥工程)。
そして、この乾紙S1を、案内ロール343、344により案内させながら、ワインディングドラム342を有する第1巻取り手段341によって、乾紙S1の裏面が一次原反ロールJRの軸側に対向するよう乾紙S1を巻き取ることで一次原反ロール(通称「ジャンボロール」)JRを形成する(第1巻取り工程)。なお、乾紙S1(後述の一次連続シートS11、S12)の裏面とは、ヤンキードライヤー331のシリンダと接していた面の反対側の面(反ドライヤー面)のことを意味する。
上述の製造設備・方法などで製造された一次原反ロールJRを、図11に示すように、本発明に係るティシュペーパー製品用二次原反ロールの製造設備X1(プライマシンX1)に持ち込み、少なくとも2つ以上一次原反ロールJR、JRをセットする。
プライマシンX1は、これらの一次原反ロールJR、JRから繰り出した一次連続シート(図示例ではS11、S12)を、その連続方向に沿って積層して、図示例では2プライに積層した連続シートS2とするプライ手段51を有している。
ティシュペーパー製品用二次原反ロールの製造設備X1には、積層連続シートS2をカレンダー処理するカレンダー手段52を一つ以上設けることもできる。
カレンダー手段52におけるカレンダーの種別は、特に限定されないが、表面の平滑性向上と紙厚の調整の理由からソフトカレンダー又はチルドカレンダーとすることが好ましい。ソフトカレンダーとは、ウレタンゴム等の弾性材を被覆したロールを用いたカレンダーであり、チルドカレンダーとは金属ロールからなるカレンダーのことである。
カレンダー手段52の数は、適宜変更することができる。複数設置すれば加工速度が速くとも十分に平滑化できるという利点を有する一方、スペース的に不利となる。
二つ以上のカレンダー手段52を設置する場合、水平方向、上下方向、或いは斜め方向に並設することができ、また、これらの設置方向を組み合わせて配置しても良い。水平方向に並設すると、抱き角度を小さくなるため加工速度が高速とすることができ、上下方向に並設すると設置スペースを小さくすることができる。なお、ここで言う抱き角度とはロールの軸中心から見てシートが接している間(軸と直交する断面の円弧の一部)の角度を意味している(以下同じ)。
カレンダー処理条件におけるカレンダー種別、ニップ線圧、ニップ数なども制御要因として抄紙を行うようにし、これらの制御要因は、求めるティシュペーパーの品質すなわち紙厚や表面性によって適宜変更することが好ましい。
また、カレンダー手段52の設置位置は特に限定されないが、プライ手段51の後段であって且つ第一次薬液噴霧手段40A、40Bの前段が好ましい。第二次薬液塗布手段53A、53Bの後段であって且つコンタクトエンボス手段54の前段とすることができるが、薬液が塗布された繊維の間隙を圧着することになるので、嵩高を阻害する方向に作用するので、好ましい形態ではない。
第一次薬液噴霧手段40A、40Bとしては特に限定されないが、後に図示をもって説明する、ノズル式噴霧方式による場合のほか、ローターダンプニング噴霧方式によってもよい。
このうち、ノズル式噴霧装置における噴霧用ノズルの型式としては、環状に噴霧する空円錐型ノズル、円形状に噴霧する充円錐型ノズル、正方形状に噴霧する充角錐型、充矩型ノズル、扇型ノズル等が挙げられ、薬液が乾紙S2の幅方向に対して均一に噴霧されるように、ノズル径、ノズル数、ノズル配列パターン、ノズル配置数、あるいは噴霧距離、噴霧圧力、噴霧角度、および噴霧液の濃度、粘度などを適宜選択して使用することができる。
乾紙S2表面に塗布されずにミストとして浮遊している霧滴粒子は、吸引・回収して再度噴霧することができる。
なお、第一次薬液噴霧手段40A、40Bと、第二薬液塗布手段53A、53Bとの間で、塗布量に差があっても、塗布後に二次原反ロールRとして保管された後、折り加工されるまでの時間(8時間以上)内に、プライ相互が接していることから、次第に薬液が浸透拡散し、両者の薬液付与量が均等化していきプライ間の付与量差は小さくなる。
本発明で使用する薬液は、親和性を図るうえで、第一次薬液噴霧手段40A、40B及び第二次薬液塗布手段53A、53Bで共通のものが好ましい。
第二次薬液塗布手段53A、53Bにより薬液を高速塗布する観点から、粘度が40℃で1~700mPa・s、特に50~400mPa・s(40℃)とするのが好ましい。1mPa・sより小さいとアニロックスロールや刷版ロール等のロール上で薬液が飛散しやすくなり、逆に700mPa・sより大きいと各ロールや連続シートへの塗布量をコントロールしにくくなる傾向がある。
ポリオールとしてはグリセリン、ジグリセリン、プロピレングリコール、1,3-ブチレングリコール、ポリエチレングリコール、およびその誘導体等の多価アルコール、ソルビトール、グルコース、キシリトール、マルトース、マルチトール、マンニトール、トレハロース等の糖類を含む。
薬液塗布時の温度は30℃~60℃、好ましくは35℃~55℃とすることが好ましい。
フレキソ印刷方式の場合、フレキソ刷版ロールの線数は、10~60線とし、好ましくは15~40線、特に好ましくは20~35線とする。線数が10線未満であると塗布ムラが多く生じてしまい、他方、線数が60線超過であると紙粉が詰まり易くなる。アニロックスロールの線数は、10~300線とし、好ましくは25~200線、特に好ましくは50~100線とする。線数が10線未満であると塗布ムラが多く生じてしまい、他方、線数が300線超過であると紙粉が詰まり易くなる。アニロックスロールのセル容量は、10~100ccとし、好ましくは15~70cc、特に好ましくは30~60ccとする。セル容量が10cc未満であると所望の塗布量が得られず、他方、セル容量が100cc超過であると薬液の飛散量が多くなってしまう。
フレキソ印刷方式又はグラビア印刷方式は、加工速度が高速であっても塗布量を安定させることができ、また、一つのロールで幅広い薬液の粘度を安定的に塗布することができる。
ここでは、フレキソ印刷方式におけるドクターチャンバー形式の一例を説明する。
図12に示すように一方のドクターチャンバー形式とされる薬液塗布部53Aは、薬液の入っているドクターチャンバー61Aが、回転可能なアニロックスロール63Aと対向して配置されていて、ドクターチャンバー61Aからアニロックスロール63Aに薬液を受け渡すようになっている。また、このアニロックスロール63Aと接し且つ積層連続シートS2の一面とも接する刷版ロール64Aが回転可能に設置されていて、このアニロックスロール63Aから刷版ロール64Aに薬液を受け渡すようになっている。さらに、積層連続シートS2を挟んでこの刷版ロール64Aと対向している弾性ロール65Aとで積層連続シートS2に圧力を付与しつつ、刷版ロール64Aから積層連続シートS2に薬液を塗布するようになっている。
具体的には、片面毎の塗布量を変えるだけでなく、フレキソ版の線数を15~40線程度、頂点面積率を20~40%程度の薬液が飛散しない程度に粗くすることが考えられ、このようにすることで、塗布直後はドット柄が残り、瞬間的に塗布部分と未塗布部分ができるようになる。
2ロールフレキソ形式の第二次薬液塗布手段では、薬液タンク等の塗布装置内で循環する薬液に含まれる紙粉やエアーのろ過装置を設置する必要があるが、本実施の形態のようなドクターチャンバー形式の第二次薬液塗布手段53とした場合、紙粉等が少なくなるので、ろ過装置の負荷が軽減される。さらに、ドクターチャンバー61A、61B等の塗布装置内で薬液の温度をコントロールし、薬液粘度を安定させることが望ましい。この場合、ドクターチャンバー61A、61Bに繋がる中間タンク及び配管にヒーターを設置することにできる。他方、操業中に積層連続シートS2の幅方向の水分率で塗布量を管理する場合、例えば赤外線の検査機等を用いて常に幅方向の水分量とバラツキをチェックするようにできる。さらに、必要により、図12に示すように、刷版ロール64A及び64Bに接して多数の刷毛を有するブラシロール69A及び69Bを設け、常時、刷版ロール64A及び64Bも付着しようとする紙粉を掻き取るようにすると、刷版ロール64A及び64B及びアニロックスロール63A及び63Bの目詰まりを防止でき、安定した操業が可能となる。
次に、ドクターチャンバー形式の実施形態2について、具体的に図14及び図15に示す構造を参照しながら、以下に詳細に説明する。
なお、図示の薬液供給装置100は、前述の第二次薬液塗布手段53を構成するドクターチャンバー形式のフレキソ印刷方式による2つの薬液塗布部53A、53Bの一方についてのものとして図示したものである。図14に示す薬液供給装置100の左右方向をX軸方向、上下方向をY軸方向とする。
従って、前述のドクターチャンバー61A、61Bが、本実施形態ではドクターチャンバー130とされ、前述の弾性ロール65A、65Bが、本実施形態では回動部160とされることになる。
押出ホース121は、一端が貯留タンク110内に挿入され、他端がドクターチャンバー130の導入部132と接続されたホースであり、貯留タンク110内の薬液Lを搬送する流路として機能する。供給ポンプ122は、押出ホース121に取り付けられ、図示しない駆動モータにより駆動されて、貯留タンク110内の薬液Lをドクターチャンバー130へ加圧送給する。調整弁123は、供給ポンプ122により押出される薬液Lの流量を弁の開閉により調整する。
引込ホース141は、一端が貯留タンク110内に挿入され、他端が後述のドクターチャンバー130の導出部133と接続されたホースであり、導出部133より導出される薬液Lを貯留タンク110に搬送する流路として機能する。
吸引ポンプ142は、引込ホース141に取り付けられ、図示しない駆動モータにより駆動されて、導出部133より導出される薬液Lを吸引させて貯留タンク110(外部)へ排出させる。
貯留部131aは、アニロックスロール151側の端部が開口し、導入部132及び導出部133と連結され、内部に貯留される薬液Lをアニロックスロール151に供給する。そして、アニロックスロール151への供給量が一定となるように、導入部132より貯留部131aに導入される薬液Lの一部が導出部133を介して導出されることで、循環されるよう構成されている。
従って、前述のアニロックスロール63A、63Bが、本実施形態ではアニロックスロール151とされることになる。
ブレード131b,131cは、アニロックスロール151と当接するように設けられ、アニロックスロール151に押しつけた状態で薬液Lの絞りを行う。
継手133aは、一端が本体部131に接続され、他端が引込部140の引込ホース141に接続され、引込部140と本体部131とを連結する管状の継手である。
つまり、継手133aに孔部133bが設けられているため、継手133a内の薬液Lは外気接触することとなる。そのため、導入部132より導入した薬液Lの一部を排出(導出部133から導出)して薬液Lを循環させる際に、吸引ポンプ142で薬液Lの吸引を行っても、上記孔部133bによって薬液Lが外気接触して、内圧を外気圧に近づけることができるので、ドクターチャンバー130内の内圧変動を抑えることができる。
なお、当該孔部133bは、ドクターチャンバー130内の内圧変動が抑えられればよいため、例えば、本体部131の上面に貯留部131aに連通するように形成してもよい。
つまり、上記チューブ133c内への流入が確認された場合は、貯留部131aに貯留される薬液Lの量が過多になっている(アニロックスロール151に対して薬液Lが過供給状態となっている)ことが把握できる。したがって、上記過多の状態を目視で確認した使用者は、例えば、調整弁123を操作して薬液Lの押出量(流量)を調整することにより、当該過多の状態を解消することが可能となる。
なお、チューブ133cは、内部が空洞で上端側が外気に接触しているため、上記孔部133bの作用を相殺してしまうことはない。
つまり、前述の刷版ロール64A、64Bが、本実施形態では刷版ロール152とされることになる。
さらに、アニロックスロール151は、円柱状をなし、XY平面に直交する軸回りに回動可能に構成されているため、上記のように周面に吸着された薬液Lは、回動によって刷版ロール152に転写することができる。
そのため、刷版ロール152は、左端で当接する回動部160がr1方向に回動することでr2方向に回動するとともに、右端で当接するアニロックスロール151をr1方向に回動させる。つまり、刷版ロール152は、アニロックスロール151の周面に吸着された薬液Lを点P2にて取得し、r2方向への回動により点P1まで搬送して積層連続シートS2に転写することができる。
そのため、アニロックスロール151により吸着された薬液Lがアニロックスロール151の周面上に層状に不均一に残ってしまう場合でも、刷版ロール152の周面に移送させることで、積層連続シートS2に薬液Lを均一に転写することができる。
なお、回動部160の回動の向きは、図14においてr1方向としたが、r2方向に回動するように構成しても勿論良い。この場合、アニロックスロール151及び刷版ロール152は図14とは逆方向(つまり、アニロックスロール151:r2方向、刷版ロール152:r1方向)に回動する。
まず、供給ポンプ122を駆動させ、貯留タンク110より薬液Lを押出し、押出ホース121及びドクターチャンバー130の導入部132を介して本体部131の貯留部131aへ供給する。
次いで、回動部160を回動させてアニロックスロール151に貯留部131aの薬液Lを供給し、刷版ロール152を介して薬液Lを積層連続シートS2上に転写させる。
加えて、吸引ポンプ142を駆動させ、導出部133を介して貯留部131aの薬液Lの一部を貯留タンク110へ向けて排出して循環させる。この際、導出部133の継手133a内で、孔部133bを介した外気接触によりドクターチャンバー130内の内圧変動が抑えられる。
また、上記循環の際に、薬液Lのチューブ133c内への流入が確認された場合、調整弁123を操作して薬液Lの流量の調整を行う。
したがって、薬液供給装置100は、ドクターチャンバー130から薬液Lを吸い出す際の、ドクターチャンバー130内の内圧変動を抑えるとともに、極力省スペースで設置できる薬液供給装置100であるといえる。
また、ドクターチャンバー130は、孔部133bに下端が連結され、上方に延伸した透明又は半透明のチューブ133cを備える。
また、チューブ133cの上端(自由端)を下向きにして設けることで、孔部133bへの紙粉等の異物の混入を防止することができる。
次に、ドクターチャンバー形式の実施形態3の薬液供給装置200について、図16を用いて説明する。
ドクターチャンバー形式の実施形態2の薬液供給装置100では、孔部133bに連結されたチューブ133c内への薬液Lの流入を目視により確認することで、アニロックスロール151に対して薬液Lが過供給状態となっていることを把握できるように構成したが、本実施形態の薬液供給装置200では、上記状態に至ったか否かを自動的に判別し、使用者に判別結果を報知するように構成する。
以下の薬液供給装置200の説明においては、ドクターチャンバー形式の実施形態2の薬液供給装置100との相違点を中心に説明し、一致する構成には、同一の符号を付し、説明を省略する。
センサ133fは、例えば、被検知体に向けて発光する発光素子(図示省略)と、被検知体からの反射光を受光する受光素子(図示省略)と、を含み、受光素子からの反射光の受光量に基づいて、円筒状部133dに流入する薬液Lの高さが、当該センサ133fの設けられた高さ位置(図16に示すy1)に達したか否かを検知するセンサである。
報知部133gは、例えば、スピーカ等であり、センサ133fにより、円筒状部133dに流入する薬液Lの高さが、上記センサ133fの設けられた高さ位置に達したと検知された場合に、音声により使用者への報知を行うように構成されている。
なお、円筒状部133dは、内部が空洞で上端側が外気に接触しているため、孔部133bの作用を相殺してしまうことはない。
まず、供給ポンプ122を駆動させ、貯留タンク110より薬液Lを押出し、押出ホース121及びドクターチャンバー130の導入部132を介して本体部131の貯留部131aへ供給する。
次いで、回動部160を回動させてアニロックスロール151に貯留部131aの薬液Lを供給し、刷版ロール152を介して薬液Lを積層連続シートS2上に転写させる。
加えて、吸引ポンプ142を駆動させ、導出部233を介して貯留部131aの薬液Lの一部を貯留タンク110へ向けて排出して循環させる。この際、導出部233の継手133a内で、孔部133bでの外気接触を介してドクターチャンバー130内の内圧変動が抑えられる。
また、上記循環の際に、センサ133fにより、円筒状部133dに流入する薬液Lの高さが、センサ133fの設けられた高さ位置に達したと検知され、報知部133gにより使用者へその旨が報知された場合、調整弁123を操作して薬液Lの流量の調整を行う。
次に、ドクターチャンバー形式の実施形態4の薬液供給装置300について、図17を用いて説明する。
ドクターチャンバー形式の実施形態2の薬液供給装置100及び実施形態3の薬液供給装置200では、孔部133bの開口量は固定値となるように構成したが、本実施形態の薬液供給装置300では、当該開口量を調整できるように構成する。
以下の薬液供給装置300の説明においては、ドクターチャンバー形式の実施形態2の薬液供給装置100及び実施形態3の薬液供給装置200との相違点を中心に説明し、一致する構成には、同一の符号を付し、説明を省略する。
バルブ本体133iは、上記孔部133jの開口の上方に配設され、先端がテーパ状で上下動可能なニードル軸(図示省略)を備え、当該ニードル軸を上下動させて、孔部133jのオリフィスと接触する際の開度に応じて孔部133jの開口量を調整できるように構成されている。
つまり、内圧変動を抑えることで、内圧変動によりもたらされるドクターチャンバー130内からの薬液Lの噴出や、アニロックスロール151上の薬液Lのドクターチャンバー130側への吸込み等が好適に防止されるので、薬液Lの循環が促進される。
まず、供給ポンプ122を駆動させ、貯留タンク110より薬液Lを押出し、押出ホース121及びドクターチャンバー130の導入部132を介して本体部131の貯留部131aへ供給する。
次いで、回動部160を回動させてアニロックスロール151に貯留部131aの薬液Lを供給し、刷版ロール152を介して薬液Lを積層連続シートS2上に転写させる。
加えて、吸引ポンプ142を駆動させ、導出部333を介して貯留部131aの薬液Lの一部を貯留タンク110へ向けて排出して循環させる。上記循環の際、センサ133fにより、円筒状部133dに流入する薬液Lの高さが、センサ133fの設けられた高さ位置に達したと検知され、報知部133gにより使用者へその旨が報知された場合、調整弁123の操作又は調整部133hによる孔部133jの開口量の調整により対処することができる。
例えば、薬液供給装置100において、チューブ133cを設けない場合は、孔部133bの上部にエアーフィルタを設置し、孔部133bへの紙粉等の異物の混入を防止するように構成してもよい。また、孔部133bは、貯留部131aの薬液Lの液面より上方であれば、本体部131の側面に設けてもよい。
ここでは、フレキソ印刷方式における2ロール転写形式の一例を説明する。
図11及び図23に示すように一方のフレキソ印刷方式とされる薬液塗布部53Aは、薬液の入っている薬液タンク66Aにディップロールである絞りロール62Aが浸されつつ回転可能に設置されている。さらに、薬液タンク66A外において絞りロール62Aと接しつつアニロックスロール63Aが、回転可能に設置されており、また、このアニロックスロール63Aと接し且つ積層連続シートS2の一面とも接する刷版ロール64Aが回転可能に設置されていて、積層連続シートS2を挟んで対向している弾性ロール65Aとで積層連続シートS2に圧力を付与している。
そして、本実施の形態では、この薬液塗布部53Aが後述するコンタクトエンボス手段54のコロ54Aと対向し且つ、前述のワインディングドラム56Aとも対向する積層連続シートS2の面側に位置している。
そして、本実施の形態では、この薬液塗布部53Bがコロ54Aと非対向とされ且つ、前述のワインディングドラム56Aとも非対向となる積層連続シートS2の他の面側に位置している。
フレキソ印刷方式における1ロール転写形式とは、前述のフレキソ2ロール転写形式から絞りロール62A、62Bを省略したものである。この場合、アニロックスロール63A、63Bが、それぞれ薬液タンク66A、66Bに浸されつつ回転可能に設置される。また、これらのアニロックスロール63A、63Bに対しては、アニロックスロール63A、63B表面の薬液を掻き取るドクターブレード(図示せず)を設置しても良い。このようなフレキソ1ロール転写形式は、メンテナンスが比較的容易であるという利点や、ブレードの摩耗や薬液中の紙粉等の異物の混入状態を容易に目視できるという利点を有している。
ティシュペーパー製品用二次原反ロールの製造設備X1には、積層連続シートS2に対してコンタクトエンボスを付与するコンタクトエンボス手段54を設けることができる。
ここで、コンタクトエンボス手段54は、図13に示すように、金属ロール又は弾性ロールである受けロール54Bと表面に細かい凸部54Cを有する金属製で硬質のコロ54Aとが所定の圧力を有して相互に外周面同士を当接しつつ、それぞれ回転可能に設置されている。そして、積層連続シートS2におけるティシュペーパー製品の幅方向中央に該当する部分に対して、左右各2つずつ存在する凸部54Cと、受けロール54Bとの間で積層連続シートS2を挟みつつ搬送することで、積層連続シートS2に対して、積層連続シートS2の連続方向に沿って層間剥離を防止するライン状のコンタクトエンボスCEを施すようになっている。
尚、このコンタクトエンボスCEを施すコロ54Aと対向した側の面を外周側として前述の巻取り手段56が、積層連続シートS2を巻取ることになる。
さらに、接合する為の手段としては上記例に限定されず、凸部の先端形状が、点状、正方形、長方形、円形、楕円形等の形状のものをコロとして用いても良く、凸部の先端形状が、細長い線状、細く斜めに伸びる線状等のものをコロとして用いても良い。
また、テンションコントロール手段57をもうける場合、第二次薬液塗布手段53の前段と、テンションコントロール手段57の後段とにカレンダー手段52を配置することも提案される。この場合、テンションコントロール手段57の後段に配置されたカレンダー手段52では、薬液塗布時には、カレンダーロール52Aを受けロール52Bから積層連続シートS2の紙厚以上の距離だけ離間させて、積層連続シートS2に対して平滑化処理を行なわず素通しさせることも提案される(第2のティシュペーパー製品用二次原反ロールの製造設備及び製造方法)。
一次連続シートS11、S12の原料パルプは、特に限定されず、ティシュペーパー製品の用途に応じて適宜の原料パルプを選択して使用することができる。原料パルプとしては、例えば、木材パルプ、非木材パルプ、合成パルプ、古紙パルプなどから、より具体的には、砕木パルプ(GP)、ストーングランドパルプ(SGP)、リファイナーグランドウッドパルプ(RGP)、加圧式砕木パルプ(PGW)、サーモメカニカルパルプ(TMP)、ケミサーモメカニカルパルプ(CTMP)、ブリーチドケミサーモメカニカルパルプ(BCTMP)等の機械パルプ(MP)、化学的機械パルプ(CGP)、半化学的パルプ(SCP)、広葉樹晒クラフトパルプ(LBKP)、針葉樹晒クラフトパルプ(NBKP)等のクラフトパルプ(KP)、ソーダパルプ(AP)、サルファイトパルプ(SP)、溶解パルプ(DP)等の化学的パルプ(CP)、ナイロン、レーヨン、ポリエステル、ポリビニルアルコール(PVA)等を原料とする合成パルプ、脱墨パルプ(DIP)、ウエストパルプ(WP)等の古紙パルプ、かすパルプ(TP)、木綿、アマ、麻、黄麻、マニラ麻、ラミー等を原料とするぼろパルプ、わらパルプ、エスパルトパルプ、バガスパルプ、竹パルプ、ケナフパルプ等の茎稈パルプ、靭皮パルプ等の補助パルプなどから、一種又は数種を適宜選択して使用することができる。
また、紙厚(尾崎製作所製ピーコックにより測定)は1プライで80~250μm、好ましくは100~200μm、より好ましくは130~180μmとされる。
次に、本発明に係るティシュペーパー製品用二次原反ロールの製造方法の一例を説明する。本形態に係るティシュペーパー製品用二次原反ロールの製造方法は、例えば、上述したティシュペーパー製品用二次原反ロールの製造設備X1を用いて行うことができる。
図11に示すように、本発明に係るティシュペーパー製品用二次原反ロールの製造方法においては、プライ手段51で複数の一次原反ロールから繰り出される一次連続シート(図示例ではS11、S12)をその連続方向に沿って積層して積層連続シートS2とし(積層工程)、この積層連続シートS2に対して一対の第一次薬液噴霧塗布手段40によって薬液を塗布し(第一次薬液噴霧工程)、その後に一対の第二次薬液塗布手段53で薬液を塗布し(第二次薬液塗布工程)、スリット手段55によって積層連続シートS2をティシュペーパー製品の製品幅又はその複数倍幅となるようにスリットし(スリット工程)、次に、スリット工程でスリットされた積層連続シートS2を同軸で巻取ってティシュペーパー製品の製品幅又はその複数倍幅の複数の二次原反ロールRを、巻き取り手段56によって形成する。
薬液溜めトレイ70からディップロール71が一定量の薬液を取り上げ、ディップロール71のセルに残った薬液は、グラビアロール72に移される。次いで、グラビアロール72に移された薬液は、掻取ブレード73によって掻き取られながら、圧胴74をバックアップとする積層シートS2の表面に同時に移される。グラビアロール72の網点密度などは適宜選択できる。
上述のティシュペーパー製品用二次原反ロールの製造設備、製造方法で製造された二次原反ロールRは、マルチスタンド式インターフォルダに多数セットされ、セットされた二次原反ロールRから二次連続シートを繰り出して折り畳むと共に積層することによってティシュペーパー束が製造される。以下では、そのマルチスタンド式インターフォルダの一例について説明する。
ところで、前述したように、ティシュペーパー束30aを構成するティシュペーパーの紙の方向は、ティシュペーパーの折り畳み部の延在方向と直交する方向に沿って横方向(CD方向)となるため、図6(b)に示すように、ティシュペーパーTを収納箱Bから引き出す際には、その引き出し方向は、ティシュペーパーTの横方向(CD方向)と沿うようになっている。
〔第3のティシュペーパー製品用二次原反ロールの製造設備及び製造方法〕
図20に示すように、コンタクトエンボス手段54は、カレンダー手段52と第二次薬液塗布手段53との間に設置することもできる。このようなティシュペーパー製品用二次原反ロールの製造設備X3を用いてのティシュペーパー製品用二次原反ロールの製造方法は次のようになる。
図20に示すように、本形態に係るティシュペーパー製品用二次原反ロールの製造方法においては、プライ手段51で複数の一次原反ロールから繰り出される一次連続シート(図示例ではS11、S12)をその連続方向に沿って積層して積層連続シートS2とし(積層工程)、この積層連続シートS2に対して一対のカレンダー手段52で平滑化処理し(平滑化工程)、平滑化処理された積層連続シートS2に対してコンタクトエンボス手段54でコンタクトエンボスを付与し(コンタクトエンボス工程)、コンタクトエンボスを付与された積層連続シートS2に対して一対の第一次薬液噴霧手段40及び第二次薬液塗布手段53で薬液を塗布し(薬液塗布工程)、スリット手段55によって積層連続シートS2をティシュペーパー製品の製品幅又はその複数倍幅となるようにスリットし(スリット工程)、次に、スリット工程でスリットされた積層連続シートS2を同軸で巻取ってティシュペーパー製品の製品幅又はその複数倍幅の複数の二次原反ロールRを、巻き取り手段56によって形成する。
なお、ティシュペーパー製品用二次原反ロールの製造設備X3で、薬液が塗布されないティシュペーパー製品を製造する場合、積層連続シートS2をコンタクトエンボス手段54からスリット手段55に直接移送し、第一次薬液噴霧手段40及び第二次薬液塗布手段53を通さずに積層連続シートS2を流すだけで良い。
図21に示すように、薬液塗布工程40,53は、プライ手段51とカレンダー手段52との間に設置し、カレンダー手段52を一段として第二次薬液塗布手段53とコンタクトエンボス手段54との間に設置することもできる。このようなティシュペーパー製品用二次原反ロールの製造設備X4を用いてのティシュペーパー製品用二次原反ロールの製造方法は次のようになる。
図21に示すように、本形態に係るティシュペーパー製品用二次原反ロールの製造方法においては、プライ手段51で複数の一次原反ロールから繰り出される一次連続シート(図示例ではS11、S12)をその連続方向に沿って積層して積層連続シートS2とし(積層工程)、この積層連続シートS2に対して上下方向に並設された一対の第二次薬液塗布手段53で薬液を塗布し(薬液塗布工程)、一対のカレンダー手段52で平滑化処理し(平滑化工程)、平滑化処理された積層連続シートS2に対してコンタクトエンボス手段54でコンタクトエンボスを付与し(コンタクトエンボス工程)、スリット手段55によって積層連続シートS2をティシュペーパー製品の製品幅又はその複数倍幅となるようにスリットし(スリット工程)、次に、スリット工程でスリットされた積層連続シートS2を同軸で巻取ってティシュペーパー製品の製品幅又はその複数倍幅の複数の二次原反ロールRを、巻き取り手段56によって形成する。
なお、ティシュペーパー製品用二次原反ロールの製造設備X4で、薬液が塗布されないティシュペーパー製品を製造する場合、積層連続シートS2をプライ手段51からカレンダー手段52に移送し、薬液塗布手段40,53を通さずに積層連続シートS2を流すだけで良い。
図22に示すように一対のカレンダー手段52を上下方向に沿って配置し、且つ、一対の第二次薬液塗布手段53を上下方向に沿って配置することもできる。
このようなティシュペーパー製品用二次原反ロールの製造設備X5を用いてのティシュペーパー製品用二次原反ロールの製造方法は次のようになる。
図22に示すように、本形態に係るティシュペーパー製品用二次原反ロールの製造方法においては、プライ手段51で複数の一次原反ロールから繰り出される一次連続シート(図示例ではS11、S12)をその連続方向に沿って積層して積層連続シートS2とし(積層工程)、この積層連続シートS2に対して一対のカレンダー手段52で平滑化処理し(平滑化工程)、積層連続シートS2に対して一対の第一次薬液噴霧手段40及び第二次薬液塗布手段53で薬液を塗布し(薬液塗布工程)、積層連続シートS2に対してコンタクトエンボス手段54でコンタクトエンボスを付与し(コンタクトエンボス工程)、スリット手段55によって積層連続シートS2をティシュペーパー製品の製品幅又はその複数倍幅となるようにスリットし(スリット工程)、次に、スリット工程でスリットされた積層連続シートS2を同軸で巻取ってティシュペーパー製品の製品幅又はその複数倍幅の複数の二次原反ロールRを、巻き取り手段56によって形成する。
なお、ティシュペーパー製品用二次原反ロールの製造設備X5で、薬液が塗布されないティシュペーパー製品を製造する場合、積層連続シートS2をカレンダー手段52からコンタクトエンボス手段54に直接移送し、薬液塗布手段40,53を通さずに積層連続シートS2を流すだけで良い。
実施例1は、ローターダンプニング方式による第一次薬液噴霧を行い、その後にフレキソ印刷方式による第二次薬液塗布を行なったものである。第一次薬液噴霧:片側当たり1.0g/m2としたものである。第二次薬液塗布:片側当たり1.0g/m2としたものである。したがって、2プライ合計での薬液付与量は4.0g/m2となる。
実施例2は、ローターダンプニング方式による第一次薬液噴霧を行い、その後にフレキソ印刷方式による第二次薬液塗布を行なったものである。第一次薬液噴霧:片側当たり0.6g/m2としたものである。第二次薬液塗布:片側当たり1.4g/m2としたものである。したがって、2プライ合計での薬液付与量は4.0g/m2となる。
実施例3は、ローターダンプニング方式による第一次薬液噴霧を行い、その後にフレキソ印刷方式による第二次薬液塗布を行なったものである。第一次薬液噴霧:片側当たり1.6g/m2としたものである。第二次薬液塗布:片側当たり0.4g/m2としたものである。したがって、2プライ合計での薬液付与量は4.0g/m2となる。
実施例4は、ノズル方式による第一次薬液噴霧を行い、その後にフレキソ印刷方式による第二次薬液塗布を行なったものである。第一次薬液噴霧:片側当たり1.0g/m2としたものである。第二次薬液塗布:片側当たり1.0g/m2としたものである。したがって、2プライ合計での薬液付与量は4.0g/m2となる。
実施例5は、ローターダンプニング方式による第一次薬液噴霧を行い、その後にグラビア印刷方式による第二次薬液塗布を行なったものである。第一次薬液噴霧:片側当たり1.0g/m2としたものである。第二次薬液塗布:片側当たり1.0g/m2としたものである。したがって、2プライ合計での薬液付与量は4.0g/m2となる。
比較例1は、二段階薬液付与を行なわないで、プライマシンでフレキソ印刷方式による一回だけの薬液塗布を行なったものである。塗布量は片側当たり2.0g/m2とし、2プライ合計での薬液付与量は4.0g/m2としたものである。
比較例2は、プライマシンでフレキソ印刷方式による第一次薬液塗布を、片側当たり1.0g/m2の塗布量(両面では2.0g/m2)で行なった後、続いてにフレキソ印刷方式による第二次薬液塗布を、片側当たり1.0g/m2の塗布量(両面では2.0g/m2)で行なった、二段階塗布方式によるものである。2プライ合計での薬液付与量は4.0g/m2としたものである。
原紙を構成するパルプは、NBKP30%、LBKP70%とした。また、クレープ率19%のものを使用した。各実施例及び各比較例については、同じ組成の薬液を、粘度が110mPa・s(40℃)となるように調製した。
参考例1は出願人が市販している非保湿系の汎用ティシュペーパー、参考例2は出願人が市販しているローションタイプのティシュペーパーであるが、参考例3及び参考例4は他社の市販品であるので、不明内容を含む。
米坪・・・JIS P 8124(1998)に準じて測定した。2プライのティシュー製品の場合、2プライのシートの平均米坪を記載した。
紙厚・・・JIS P 8127(1998)の条件下で、ダイヤルシックネスゲージ(厚み測定器)「PEACOCK G型」(尾崎製作所製)を用いて測定されるものである。
製品密度・・・製品の密度は、JIS P 8111 条件下において調湿させたティシュペーパー製品米坪を2倍した値(C)を、「PEACOCK G型」によるティシュペーパー(2プライ)での紙厚(D)で除した値で、単位をg/cm3、小数点3桁で表す。
乾燥引張強度・・・JIS P 8113(1998)の引張試験方法に準じて測定されるものである。
湿潤引張強度・・・JIS P 8135(1998)に準じて測定されるものである。
伸び率・・・ミネベア株式会社製「万能引張圧縮試験機 TG-200N」を用いて測定されるものである。
ソフトネス・・・JIS L 1096 E法に準じたハンドルオメータ法に基づいて測定されるものである。但し、試験片は100mm×100mmの大きさとし、クリアランスは5mmで実施した。1プライで縦方向、横方向の各々5回ずつ測定し、その全10回の平均値を小数点1桁とし、cN/100mmを単位として表した。
静摩擦係数・・・JIS P 8147(1998)に準じて次記の方法で測定されるものである。1プライにはがしたティシュペーパーを、紙の表が外側に来るようにアクリル板に張り付ける。2プライのまま100gのおもりにティシュペーパーを巻きつけ、アクリル板上のティシューに乗せる。アクリル板を傾け、おもりが滑り落ちる角度を測定する。角度測定は8回実施し、平均角度を算出し、そのタンジェント値を静摩擦係数とする。
MMD・・・静摩擦係数の平均偏差MMDである。MMDは滑らかさの指標の一つであり、数値が小さいほど滑らかであり、数値が大きいほど滑らかさに劣るとされる。なお、MMD値の測定方法としては、図23(a)に示すように、摩擦子212の接触面を所定方向(図23(a)における右斜め下方向)に20g/cmの張力が付与された測定試料であるティシュペーパー211の表面に対して25gの接触圧で接触させながら、張力が付与された方向と略同じ方向に速度0.1cm/sで2cm移動させる。このときの、摩擦係数を、摩擦感テスター KES-SE(カトーテック株式会社製)を用いて測定し、その摩擦係数を摩擦距離(移動距離=2cm)で除した値をMMD値とした。なお、摩擦子212は、直径0.5mmのピアノ線Pを20本隣接させてなり、長さ及び幅がともに10mmとなるように形成された接触面を有している。接触面には、先端が20本のピアノ線P(曲率半径0.25mm)で形成された単位膨出部が形成されている。なお、図23(a)には、摩擦子212を模式的に表し、図23(b)には、図23(a)における一点鎖線で囲まれた部分の拡大図を示すものとする。
水分率・・・JIS P 8124(1998)に準じて測定されるものである。
薬液含有量・・・薬液含有量とは、JIS P 8111の標準状態におけるティシュペーパーの単位面積に対し含まれる乾燥状態(絶乾)の薬液成分の含有量を示し、具体的には、付与した薬液中の水分以外の成分の含有量を示すものとする。このティシュペーパーの単位面積とは、プライされたシートを平面に垂直線上にある視点から見た面積であり、プライされた各シート、およびその表裏面の合計面積を意味しない。
薬液含有率・・・薬液含有率とは、JIS P 8111 条件下において調湿させた所定質量のティシュペーパー製品を分母(A)(g)とし、所定質量のティシュペーパー製品中に含まれる薬液中の水分を除いた質量(B)(g)を分子として、(B)を(A)で除した比率を(%)で表す。(薬液含有率%)=(B)÷(A)×100(%)
官能評価・・・実施例1~5、比較例1、2及び参考例1~4について、消費者87人を対象に、やわらかさ、なめらかさ、厚み感、しっとり感について下記の基準に基づく官能評価を行った。
なお、評価基準は、薬液が付与されていない非保湿系の汎用ティシュペーパー(比較例1)の成績をすべて「3」とし、「大変優れている」と感じたものについては「5」、「優れている」と感じたものについては「4」、「基準と同等」と感じたものについては「3」、「劣る」と感じたものについては「2」、「顕著に劣る」と感じたものについては「1」とした。さらに、薬液付与ティシュペーパーについては、ベタつき感の有無についても評価を行い、評価基準は、「ベタつき感が少ない」ものを「○」とし、「明らかにベタつき感がある」ものを「×」とした。
さらに、官能評価のばらつきとは、各官能評価が幅方向及び流れ方向で安定しているか否かを、シートの幅方向及び流れ方向において、前記消費者87人に供したサンプルの採取位置との相関で調べたものである。評価は、比較例1における各官能評価の幅方向及び流れ方向での安定性を基準にし、比較例1の場合を「1」、優れているを「2」、顕著に優れているを「3」としたものである。
〔発明1〕
一次原反ロールから連続的にティシュペーパー製品用の複数の二次原反ロールを製造するティシュペーパー製品用二次原反ロールの製造方法であって、
複数の一次原反ロールから繰り出される一次連続シートをその連続方向に沿って積層して積層連続シートとする積層手段と、
前記連続シートのそれぞれに対して薬液を噴霧状態で付与する第一次薬液噴霧手段と、
その後に、それぞれの連続シートに対して薬液をフレキソ印刷方式又はグラビア印刷方式によって塗布する第二次薬液塗布手段と、
積層連続シートをティシュペーパー製品の製品幅又はその複数倍幅となるようにスリットするスリット手段と、
スリットされた各積層連続シートを同軸で巻取ってティシュペーパー製品の製品幅又はその複数倍幅の複数の二次原反ロールを形成する巻取り手段と、を有することを特徴とするティシュペーパー製品用二次原反ロールの製造装置。
前記第一次薬液噴霧手段が、前記積層手段の後であって、且つ、前記スリット手段の前に行われる、発明1に記載のティシュペーパー製品用二次原反ロールの製造装置。
前記積層手段と前記第一次薬液噴霧手段との間に、カレンダーにて平滑化処理する平滑化手段を有する、発明2に記載のティシュペーパー製品用二次原反ロールの製造装置。
前記第二次薬液塗布手段と前記スリット手段との間に、前記積層連続シートに対して層間剥離を防止するライン状のコンタクトエンボスを施すコンタクトエンボス手段を有する、発明2に記載のティシュペーパー製品用二次原反ロールの製造装置。
前記第一次薬液の付与がノズル式噴霧方式によるものである、発明1に記載のティシュペーパー製品用二次原反ロールの製造装置。
前記第一次薬液の付与がローターダンプニング噴霧方式によるものである、発明1に記載のティシュペーパー製品用二次原反ロールの製造装置。
前記発明のいずれか1項の発明によって得られた前記二次原反ロールを多数用意し、これらをマルチスタンド式インターフォルダにおいてライン方向に沿って配置し、各二次原反ロールから繰り出される複数の二次連続シートをその連続方向に沿って移送すると共に、その移送過程で折り畳みながら積み重ね、その後、所定枚数の積層シートを所定長さ切断してティシュペーパー束とし、この積層を収納箱内に収納することを特徴とするティシュペーパー製品の製造装置。
51・・・プライ手段(積層工程)
52・・・カレンダー手段(平滑化工程)
53・・・第二次薬液塗布手段(第二次薬液塗布工程)
54・・・コンタクトエンボス手段(コンタクトエンボス工程)
55・・・スリット手段(スリット工程)
56・・・第2巻取り手段(二次原反ロール巻取り工程)
115・・・ヤンキードライヤー(乾燥工程)
119・・・第1巻取り手段(第1巻取り工程)
40・・・薬液噴霧手段(薬液噴霧工程)
190・・・搾水手段(搾水工程)
W・・・湿紙
S1・・・乾紙
S11、S12・・・一次連続シート
S2・・・積層連続シート
JR・・・一次原反ロール
R・・・二次原反ロール
Claims (7)
- 一次原反ロールから連続的にティシュペーパー製品用の複数の二次原反ロールを製造するティシュペーパー製品用二次原反ロールの製造方法であって、
複数の一次原反ロールから繰り出される一次連続シートをその連続方向に沿って積層して積層連続シートとする積層工程と、
前記連続シートのそれぞれに対して薬液を噴霧状態で付与する第一次薬液噴霧工程と、
その後に、それぞれの連続シートに対して薬液をフレキソ印刷方式又はグラビア印刷方式によって塗布する第二次薬液塗布工程と、
積層連続シートをティシュペーパー製品の製品幅又はその複数倍幅となるようにスリットするスリット工程と、
スリットされた各積層連続シートを同軸で巻取ってティシュペーパー製品の製品幅又はその複数倍幅の複数の二次原反ロールを形成する巻取り工程と、を有することを特徴とするティシュペーパー製品用二次原反ロールの製造方法。 - 前記第一次薬液噴霧工程が、前記積層工程の後であって、且つ、前記スリット工程の前に行われる、請求項1に記載のティシュペーパー製品用二次原反ロールの製造方法。
- 前記積層工程と前記第一次薬液噴霧工程との間に、カレンダーにて平滑化処理する平滑化工程を有する、請求項2に記載のティシュペーパー製品用二次原反ロールの製造方法。
- 前記第二次薬液塗布工程と前記スリット工程との間に、前記積層連続シートに対して層間剥離を防止するライン状のコンタクトエンボスを施すコンタクトエンボス工程を有する、請求項2に記載のティシュペーパー製品用二次原反ロールの製造方法。
- 前記第一次薬液の付与がノズル式噴霧方式によるものである、請求項1に記載のティシュペーパー製品用二次原反ロールの製造方法。
- 前記第一次薬液の付与がローターダンプニング噴霧方式によるものである、請求項1に記載のティシュペーパー製品用二次原反ロールの製造方法。
- 前記請求項のいずれか1項の請求項によって得られた前記二次原反ロールを多数用意し、これらをマルチスタンド式インターフォルダにおいてライン方向に沿って配置し、各二次原反ロールから繰り出される複数の二次連続シートをその連続方向に沿って移送すると共に、その移送過程で折り畳みながら積み重ね、その後、所定枚数の積層シートを所定長さ切断してティシュペーパー束とし、この積層を収納箱内に収納することを特徴とするティシュペーパー製品の製造方法。
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JP4681677B1 (ja) | 2011-05-11 |
JP2011206074A (ja) | 2011-10-20 |
KR20130018263A (ko) | 2013-02-20 |
KR101688259B1 (ko) | 2016-12-20 |
CN102869293B (zh) | 2016-04-06 |
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