JP6665248B2 - Method for producing wet wiper laminate - Google Patents

Description

  The present invention relates to a method for manufacturing a wet wiper laminate in which a plurality of folded wet wipers are stacked.

  A wet wiper in which a fiber sheet is impregnated with a chemical solution is used for cleaning a toilet and the like. The wet wiper is appropriately folded, such as two-fold, four-fold, or eight-fold, and a bundle-like laminate in which a plurality of the folded state is laminated is wrapped with a packaging film or the like to form a product. Often.

  And the wet wiper laminated body which is the inclusion of such a wet wiper product was conventionally manufactured as follows.

  That is, the wet wiper base paper in a dry state is appropriately folded, the wet wiper base papers in the dry state after the folding are stacked in the vertical direction to form a bundle-like laminate, and then the laminate is transported to the next stage. In a process or the like, a chemical solution is applied in the form of a shower from above the laminate toward the upper surface of the bundle, and the laminate is impregnated with the chemical solution. In some cases, the chemical solution is applied from the side to the side surface of the laminated body in which the edges of the folded wet wiper base paper are arranged in a shower shape from the side, in addition to from above.

  However, the conventional method of manufacturing a wet wiper laminate does not sufficiently impregnate a chemical solution into the inside of the laminate, particularly to the central portion of the laminate (near the center of the paper of the wet wiper located in the middle of the laminate). There is a difference in the impregnation amount of the chemical solution between the central portion and the outer peripheral surface portion of the laminate, and a difference in paper quality such as strength partially occurs in the wet wipers or between the wet wipers forming the laminate. There was a thing. In addition, when the chemical solution contains a preservative or a fungicide, the effect is not sufficiently exhibited, and there is a possibility that mold or the like may be generated particularly in the central portion of the laminate.

  Such a problem is caused by the fact that the application of a chemical solution during the manufacture of a wet wiper laminate is often performed in a flow operation step for commercialization, and it is difficult to secure a chemical application time and a sufficient impregnation time. In addition, in the above-mentioned conventional manufacturing method, the chemical solution is applied from above toward the upper surface of the vertically stacked laminate, so that the chemical solution hardly penetrates between the layers of the multi-layer wet wiper base paper, and It is considered that, even if the chemical solution is applied from the side, the chemical solution is directed downward by the gravity at the side of the laminate, so that the penetration into the central portion is not effectively promoted after all.

JP 2013-249573 A JP 2008-84283 A

  Therefore, a main problem of the present invention is to provide a method for manufacturing a wet wiper laminate that can sufficiently impregnate a chemical solution up to the center of the laminate, and in particular, to provide a wet wiper product in a flow process in a short period of time. It is an object of the present invention to provide a method for manufacturing a wet wiper laminate that can sufficiently impregnate a chemical solution up to the center of the laminate even when the process is performed in the above.

  The means for solving the above problems are as follows.

[Invention of claim 1]
After folding the wet wiper base paper, this is laminated to form a laminate,
After that, this laminated body such that the lamination end face is in the vertical direction ,
By supporting this laminate from the direction of the paper surface, or by sandwiching the lower part of the laminate from the direction of the paper surface, the interlayer between the laminated end surfaces serving as the upper surface is expanded,
A wet wiper comprising a step of inserting a chemical liquid supply nozzle from above between the layers from the lamination end surface, which is the upper surface of the expanded laminate, and supplying a chemical liquid between the layers from the chemical liquid supply nozzle. A method for manufacturing a laminate.

[Invention of claim 2]
After folding the wet wiper base paper, this is laminated to form a laminate,
The laminated body is inserted into the bag body with one opening so that the laminated end face faces the opening side,
The method for manufacturing a wet wiper laminate according to claim 1, wherein the one opening end face of the laminate is oriented upward with the one opening of the bag facing upward.

[Invention of claim 3 ]
After the lamination end surface is in the vertical direction, a chemical solution supply nozzle is inserted from above into the interlayer from the lamination end surface, which is the upper surface of the laminate, and a chemical solution is supplied from this chemical solution supply nozzle between the layers, and the bundle side surface is method for producing wipes laminate according to claim 1, wherein the imparting chemical even for.

[Invention of claim 4 ]
The method for producing a wet wiper laminate according to any one of claims 1 to 3 , wherein the chemical solution applying step is performed in a process of transporting the laminate.

  According to the present invention as described above, a method for manufacturing a wet wiper laminate that can sufficiently impregnate a chemical solution up to the center of the laminate, particularly, such as manufacturing a wet wiper product in a flow process, can provide a chemical solution in a short time. Even when the method is performed, a method for producing a wet wiper laminate that can sufficiently impregnate a chemical solution up to the center of the laminate is provided.

It is a schematic diagram for explaining the example of a manufacturing process of a wet wiper product concerning the present invention. It is a figure showing the 1st form of the medical fluid application process concerning the present invention. It is a figure which shows the 2nd form of the chemical | medical solution provision process which concerns on this invention. It is a figure which shows the 3rd form of the chemical | medical solution provision process which concerns on this invention. It is a figure which shows the 4th form of the chemical | medical solution provision process which concerns on this invention. It is a figure which shows the 5th form of the chemical | medical solution provision process which concerns on this invention. It is a figure which shows the 6th form of the chemical | medical solution provision process which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The wet wiper laminate X according to the present embodiment is an intermediate product of a wet wiper product in which a plurality of wet wipers impregnated with a chemical solution are appropriately packaged in a bundle.

  FIG. 1 schematically shows a method of manufacturing the wet wiper laminate X according to the present embodiment. In the method of manufacturing the wet wiper laminate X according to the present embodiment shown in FIG. 1, the wet wiper base paper 1A is fed from the raw roll 1 on which the long wet wiper base paper 1A is wound, and the embossing device 50 appropriately embosses the wet wiper base paper 1A. After that, cutting and folding are performed by the folding device 60 or the like, and the wet wiper base paper 1B in an individual folded state is obtained. Thereafter, a plurality of the wet wiper base papers 1B in the folded state are laminated to form a laminated body 10, and the laminated body 10 is further arranged such that the laminating end surface thereof is in the vertical direction, and the upper surface of the laminated body 10 is formed. The chemical liquid applying device 30 applies the chemical liquid 20 from above to the laminated end surface 11 to be formed. Hereinafter, each step will be described in detail based on the manufacturing method schematically shown.

  First, the wet wiper base paper 1A (1B) is not limited to a single ply consisting of one fiber sheet, but may be a plural ply consisting of two or three fiber sheets. However, when used as a wet wiper with one ply, it is difficult to obtain sufficient strength required for wiping, and with four plies or more, the strength is improved, but the thickness and strength are excessively large, making it difficult to use. At the same time, it is difficult to impregnate a chemical solution, so that it is preferably 2 or 3 plies. The wet wiper base paper 1A previously formed into a plurality of plies and the raw roll 1 formed into a roll shape can be formed by known laminating equipment such as a ply machine. Also, for the multiple-ply wet wiper base paper 1A, each one-ply fiber sheet is unwound from the raw fabric roll 1 on which the one-ply fiber sheet is wound, laminated to form a plurality of plies, and then re-wound. It may be formed so as to be supplied to a subsequent step without being performed.

  The embossing of the wet wiper base paper 1A can be performed by a known embossing device 50 such as a steel rubber system or a steel match system. However, embossing is not essential in the present invention. In addition, in the case of embossing, in the illustrated example, the strip-shaped wet wipe base paper 1A is unwound from the raw roll 1 and the strip-shaped wet wiper base paper 1A is supplied to the embossing device 50, and after embossing is applied, winding is performed. However, embossing may not be performed in this manner. For example, a wet wiper base paper pre-embossed by a separate device (not shown) may be wound up. A web roll may be formed in advance, and a wet wiper base paper provided with an emboss may be fed from the web roll.

  On the other hand, folding of the wet wiper base paper 1A can be performed by a known folding device 60 such as an inter folder. As a form of the folding, a general folding of a wet wiper can be adopted, and examples of the folding include a two-fold, a four-fold, an eight-fold, and a Kannon-fold. In order to perform each folding, a folding device corresponding to each folding mode may be used. In the present embodiment, the shape after folding is rectangular, but is not necessarily limited to this shape. Further, the cutting of the strip-shaped wet wiper base paper 1A at the previous stage of the folding can be performed immediately before the folding by a cutter device such as an interfolder attached to the folding device 60. Of course, the wet wiper base paper 1 </ b> A may be cut at the front stage of the folding device 60 to be in a sheet state.

  When manufacturing the wet wiper laminate X or a wet wiper product, the wet wiper base paper 1A (1B) is used so that it can be divided into appropriate sizes when used as a wet wiper. In a perforated line forming device associated with the folding device 60 such as an interfolder, a perforated line for dividing the wet wiper base paper may be formed when the wet wiper base paper is folded or before and after the folding. Also in the present embodiment, it is possible to form the perforation line for dividing according to a known technique.

  On the other hand, the laminated body 10 according to the present embodiment has laminated end faces 11, 12 in which the edges of the wet wiper base paper 1B in a folded state are formed side by side. Such a laminate 10 can be formed by stacking an appropriate number of folded wet wiper base papers 1B in the vertical direction. Alternatively, the folded wet wiper base paper 1B may be formed by abutting the paper surfaces in a state where the edges of the base paper 1B face up and down. In this case, the laminated body 10 is formed in a state where the laminated end faces face up and down. Although the number of folded wet wiper base papers 1B constituting the laminated body 10 is not necessarily limited, the problem that the impregnation of the chemical by the conventional manufacturing method described in the section of the background art becomes insufficient is notable from five or more sheets. Since the number of wet wipers required by consumers as a wet wiper product is generally about 8 to 13, it is preferably 8 to 13.

  Although not shown, the laminated body 10 according to the present embodiment is not shown in the drawing so that, for example, when a suitable number of folded wet wipe base papers 1B are stacked in the vertical direction. May be sandwiched from the respective paper surfaces 13 located in the vertical direction other than the lamination end surface of the laminate 10 and the laminate 10 may be turned upright by 90 ° as it is. Alternatively, the upper and lower paper surfaces 13, 13 may be conveyed while being guided by guide means, and the stacked body may be turned upright by 90 ° by the guide means during the conveyance process. Of course, it may be performed manually. Furthermore, when the laminated body 10 is formed in a state where the laminating end face is oriented in the vertical direction, the laminated body 10 may be conveyed to the subsequent stage while supporting the paper surfaces 13, 13 constituting the side surfaces as they are.

  On the other hand, in the chemical solution applying step according to the present embodiment, the laminate 10 is characteristically arranged so that the lamination end surface thereof is in the vertical direction, and the chemical solution is applied from above the laminate 10 in this state. The folding of the wet wiper base paper 1B and the formation of the laminate 10 are easier when the wet wiper base paper 1A (1B) is in a dry state. Therefore, the wet wiper base paper 1A (1B) is used until the chemical solution applying step. It is better to be in a dry state. In other words, it is desirable that the laminate 10 that reaches the chemical solution application step is in a dry state. However, in the preceding stage of the chemical liquid applying step, a pre-chemical liquid may be applied to the wet wiper base paper 1A, the folded wet wiper base paper 1B, or the laminate 10 in order to enhance the impregnation property of the chemical liquid.

  First, a method according to a specific reference embodiment for applying a chemical solution to the laminate 10 will be described. In particular, as shown in FIG. And the like, and applying the chemical solution so as to fall from above. In this case, the liquid medicine 20 may be injected at a certain pressure. Although not shown, the chemical liquid may be sprayed using a nozzle type spraying device or the like as the chemical liquid applying device 30, or the chemical liquid may be dripped like a curtain film using a curtain coating device as the chemical liquid applying device 30. Alternatively, the laminate may pass through the chemical curtain film.

  In the present embodiment, the wet wiper base paper 1B in the folded state is applied by applying the chemical solution 20 from above toward the laminated end surface 11 on the upper surface side where the edges of the wet wiper base paper 1B in the folded state are aligned. , 1B,..., 1B, the chemical solution 20 easily reaches the depth direction of the laminate 10, that is, directly to the center of the laminate 10, and drops due to gravity and capillary action generated between layers. Since the downward movement is also promoted, it is possible to easily and quickly impregnate a sufficient amount of the chemical solution up to the center of the laminate 10.

Further, in the embodiment according to the present invention, particularly as illustrated in FIG. 3, in addition to chemical application of a laminated end surface 11 side which constitutes the upper surface of the laminated body 10, imparts chemical also from the side of the laminated body 10 You may do so. The application of the chemical from the side direction can also be applied by a suitable chemical applying means such as the above-described shower device or nozzle type spray device. In the illustrated example, a large number of chemical liquid application holes 41 are provided in a wall 40 located on the side of the laminated body 10, and a chemical liquid is applied from the chemical liquid applied holes 41 to the side surface of the laminated body 10. Is shown. Further, in a state where the laminated body 10 in which the wet wiper base papers 1B in the folded state are laminated is arranged such that the laminated end faces are in the vertical direction, the side surfaces of the laminated body are constituted by the laminated end faces 12 and the paper surface 13. However, even when the chemical is applied to the laminate 10 from the side, it is preferable to apply the chemical toward the side surface constituted by the laminated end surface 12 among the side surfaces as shown in the illustrated example. This is because the application of the chemical to the laminated end surface 12 makes it easier for the chemical to penetrate into the center of the laminate 10.

  Here, a specific method of the present embodiment for applying a chemical solution to the laminate 10 will be described. An apparatus having a chemical solution supply nozzle 70 is used as the chemical solution applying device 30, and a layer is formed between the laminated end surface 11 which is the upper surface of the laminate 10 and the interlayer A method of inserting the chemical solution supply nozzle 70 and supplying a chemical solution between the layers from the chemical solution supply nozzle 70 is exemplified. In this method, for example, as shown in FIG. 4, a chemical solution supply nozzle 70 in which a plurality of small tubes 71, 71 having a large number of chemical solution supply holes 71x, 71x. At a position above the conveying path of the laminate 10 and the like, it can be moved up and down by a known elevating mechanism and arranged, and is disposed toward the lamination end face 11 of the laminate 10 positioned below the chemical solution supply nozzle 70. The chemical solution supply nozzle 70 is lowered toward the lamination end face 11 by the elevating function, and each of the thin tubes 71 is inserted between the layers from the lamination end face 11, and during or after the insertion process, the chemical solution is supplied to the chemical solution supply holes 71x, 71x. From layer to layer. Preferably, after the chemical solution supply nozzle 70 is inserted into the dried laminate in which the pre-chemical solution is not applied, the chemical solution supply is started, and thereafter, the chemical solution is supplied while the chemical solution supply nozzle is raised. When the laminate 10 is in a dry state, the rigidity is higher than that in a wet state, so that the insertion of the chemical solution supply nozzle 70 is easy. Since the chemical solution is sequentially supplied inside the bundle from the portion to the upper portion, the impregnation of the chemical solution and the shape retention of the bundle are more excellent. When a sufficient supply of the chemical solution between the layers is completed, the chemical solution supply nozzle 70 may be raised to allow the stack 10 to move to the subsequent stage. The application of the chemical solution from the chemical solution supply holes 71x, 71x... Is a pressure that does not cause collapse of the laminate because excessive injection pressure may cause the laminate to collapse. Further, the configuration of the chemical solution supply nozzle 70 is not limited to the illustrated example, and the shape is not limited as long as it can be inserted between the layers of the laminated body 10 and can supply the chemical solution between the layers in the inserted state. According to the second method, the chemical liquid is supplied directly to the center of the laminate, so that the chemical liquid is surely permeated into the center of the laminate. Although not shown, in this method, of course, in addition to the supply of the chemical solution from the chemical solution supply nozzle 70, the chemical solution may also be applied from the side surface direction of the laminate 10.

  Here, as shown in FIGS. 2 to 4, the method of applying the chemical solution can be performed in a state where the laminate 10 is exposed at an appropriate chemical solution application position, but is not limited thereto. For example, FIG. As shown in the drawing, the laminated body 10 is inserted into a bag 80 for packaging one side opening so that the laminated end face 11 faces the opening 81 side, and the one opening 81 of the bag body 80 is closed. The chemical solution 20 may be applied upward toward the laminated end face 11 via the bag opening 81. In this case, since the chemical solution 20 stays in the bag body 80, the amount of the used chemical solution can be reduced, and the trouble of the collection operation is eliminated. Further, the chemical solution attached to the inner surface of the bag 80 comes to be indirectly attached to the laminate 10, and the application of the chemical solution particularly to the vicinity of the outer peripheral surface of the laminate 10 is promoted.

  The method of inserting the laminated body 10 into the bag body 80 is not limited, and as long as the laminated body 10 is inserted so that the laminated end surface faces one opening side of the bag body. Good. For example, the laminate may be inserted in a bag with one opening in advance, or the laminate may be stored in a precursor of a tubular bag, and then the edge of the one tube opening may be sealed. In addition, after surrounding the laminate with the continuous film sheet in such a manner that the laminate is wrapped around, the laminate is positioned in the continuous film sheet that is partially cylindrical by sealing both side edges thereof, and then the cylindrical shape is formed. By cutting and fusing the portion in the width direction, the laminated body may be inserted into the bag with one opening. In this embodiment, the additional application of the chemical solution from the side described in the first method cannot be performed.

  On the other hand, since the folded wet wiper base paper 1B itself constituting the laminate 10 is difficult to stand on its own, it is particularly easy to fall in the direction of the paper surface 13, and if the laminate 10 is in a state where the laminate end face is directed vertically. There is a possibility that the laminate 10 may collapse. Therefore, although not shown in FIGS. 1 to 4, in the present embodiment, it is preferable to provide a means for preventing the laminate 10 from collapsing at the time of applying a chemical solution or the like. In order to prevent the laminated body from falling or collapsing, it is necessary to properly support each paper surface with a guide wall or guide bar that is erected with a distance equal to or slightly larger than the distance between the two paper surfaces constituting the side surface of the laminated body. do it. In particular, as shown in FIG. 6, the pair of wet wiper base papers in each folded state have a pair of separation distances L <b> 1 that are slightly longer than the distances between the two paper sheets constituting the side surfaces of the laminated body 10 in a state where the paper surfaces are substantially in contact with each other. If the guide walls 45, 45 and the like are provided and the paper surfaces 13, 13 of the laminate 10 are arranged so as to face the guide walls 45, 45, the laminate 10 can be united as a laminate without excessive collapse. The interlayer between the upper stacked end faces 11 is expanded while maintaining the state. If a chemical is applied in this state, the central portion of the laminate is more effectively impregnated with the chemical. That is, according to the specific first method of applying the chemical solution, the chemical solution easily reaches the center of the laminated body 10 or a position close to the center from the expanded layer, and the specific method of applying the chemical solution is performed. In the typical second method, the chemical solution supply nozzle 70 is more easily inserted. Further, as a method of effectively applying a chemical solution while preventing the collapse of the laminated body 10, as shown in FIG. 7, the lower part of the laminated body 10 is clamped by clamping means 46, 46 from the direction of the paper. Thus, the interlayer between the stacked end surfaces 11 serving as the upper surface may be expanded. By sandwiching in this manner, the layers of the laminated end surface 11 serving as the upper surface can be expanded while the collapse of the laminated body 10 is reliably prevented, so that the impregnation with the chemical solution is performed more effectively. Note that the installation height and separation distance of the guide wall 45 and the guide rod, and the sandwiching position of the laminated body 10 are determined by the rigidity of the wet wiper base paper 1A (1B), the number of wet wiper base papers 1B constituting the laminated body 10, and the opening between layers. What is necessary is just to design suitably according to a condition, the shape maintenance condition of the laminated body 10, etc.

  On the other hand, it is desirable that the application of the chemical solution to the laminate 10 according to the present embodiment be performed in the process of transporting the laminate 10. In the example shown in FIGS. 1 to 3, the chemical liquid is applied from above in the process of placing and transporting the laminate 10 on the transporting surface F that moves. By doing so, the chemical solution 20 can be applied while the laminate 10 is being moved or only by a temporary stop, and the productivity is not reduced. The wet wiper laminate X after the chemical liquid application step can be appropriately packaged in a subsequent step to form a wet wiper product. In particular, in the case of a method in which a chemical solution is applied in advance in the bag body having one opening, a product can be obtained simply by sealing the one opening 81. Note that, in the present embodiment, the lamination end surface 11 of the laminate 10 only needs to face upward when the chemical liquid is applied, and in the present embodiment, when transporting to the next stage, in order to stabilize the transport, the wet wiper laminate is used. For X, the orientation of the laminate may be changed so that the paper surface faces up and down.

  On the other hand, in the present embodiment, the application amount of the chemical solution is an appropriate design item, but, for example, it is desirable that the impregnation rate of the chemical solution in the wet wiper after the product can secure 150 to 220% by mass. .

  Here, the fiber sheet constituting the wet wiper base paper 1A (1B) according to the present embodiment is an appropriate sheet used for the wet wiper, such as a nonwoven fabric sheet or paper such as crepe paper. If it is a crepe paper, it may be a paper provided with dry crepe or a paper provided with wet crepe. However, it is desirable that the fiber sheet constituting the wet wiper base paper according to the present embodiment has been subjected to two types of creping, particularly dry crepe and wet crepe. Dry crepe is fine irregularities having many valleys and ridges along the CD direction, and is formed when a wet paper is dried with a Yankee dryer in the papermaking process and then peeled off from the Yankee dryer with a creping doctor. Things. The dry crepe imparts softness and elongation, particularly elongation in the MD direction, to the sheet, and gives the base paper a sense of thickness corresponding to the unevenness. In addition, the fine unevenness improves the wiping property of dirt as compared with the base paper alone. On the other hand, wet crepe is provided when transferring wet paper in a paper making process to a Yankee dryer. Since the fiber line itself of the wet paper is dried and fixed in an uneven state, it does not expand due to the impregnation with the chemical solution, and in combination with dry crepe, the wiping property of the wet wiper, especially dry, sticks The wiping property of the stool and the like and the surface strength are improved. In particular, wet crepe has a very small change in shape due to impregnation with a chemical solution, so that the impregnation property, particularly the impregnation speed, of the chemical solution is improved. As described above, the fiber sheet constituting the wet wiper base paper is preferably provided with both the dry crepe and the wet crepe, so that the effect at the time of use such as wiping property is improved and the chemical liquid impregnating property at the time of production is improved. Will be excellent.

On the other hand, a preferred example of the fiber sheet constituting the wet wiper base paper 1A (1B) of the present embodiment will be further described. The fiber sheet of the present embodiment has a basis weight of 60 to 95 g / m ² , more preferably a basis weight of 60 to 95 g / m ² . It is good to be 75-90 g / m ² . When the basis weight is less than 75 g / m ² , it is difficult to obtain a sufficient strength necessary for wiping, and it becomes difficult to secure sufficient chemical solution retention due to coarse fibers. On the other hand, if it exceeds 95 g / m ² , the fibers become dense and it is difficult for dirt to enter between the fibers, and the fibers become hard and supple, and the wiping properties are not improved. The impregnating properties, especially the impregnating rate, decrease.

  The basis weight in the present embodiment is such that the manufactured wet wiper is cut into a square of 10 cm, and the wet wiper is sufficiently dried in a thermostat at 50 ° C. for 0.5 hour or more to prepare ten samples. And the value calculated from the weight and the size of the sample.

  In addition, the chemical solution 20 according to the present embodiment is not particularly limited, and a known chemical solution used for a wet wiper can be used. Examples of components contained in the drug solution include alcohol, a disinfectant, a surfactant, and silicone. Preferably, boric acid or metal ions can be contained in the chemical solution. When boric acid is contained, it is more desirable that the base paper further contain polyvinyl alcohol fibers (also referred to as PVA fibers). By combining boric acid and PVA fiber, a function as a paper strength agent is exhibited, and strength can be improved while having water dissolving properties. When metal ions are contained, it is more preferable that carboxymethylcellulose (also referred to as CMC) is further contained in the base paper or on the base paper surface. By combining metal ions and CMC, strength can be improved while having water decomposability similarly to the effect of combining boric acid and PVA fibers.

  On the other hand, if the fiber material of the wet wiper base paper according to the present embodiment is crepe paper, pulp obtained by mixing softwood pulp and hardwood pulp, or waste paper pulp is suitably used. Softwood pulp and hardwood pulp may be bleached or unbleached. Further, a mixture of unbleached unbleached pulp and bleached pulp may be used. When a mixture of softwood pulp and hardwood pulp is used, a mixture containing 60 to 95% of softwood-derived pulp and 5 to 40% of hardwood-derived pulp is preferable. The pulp derived from softwood has a long fiber length, and the fiber orientation in the papermaking stage tends to be in a predetermined direction, and the aspect ratio of the peel strength tends to be different. However, the pulp derived from softwood is 60 to 95%, and the pulp derived from hardwood is 5 to 5%. When the blending ratio is 40%, a difference in the aspect ratio of the peel strength hardly occurs due to the presence of pulp derived from hardwood. Further, since the fiber length of the pulp derived from hardwood is short, the fibers become dense and the suppleness is improved. The pulp derived from softwood has a fiber thickness (width) of about 30 to 40 μm and an average fiber length of about 2.5 to 5 mm. Further, the fiber raw material according to the wet wiper base paper 1 </ b> A (1 </ b> B) according to the present embodiment can contain appropriate chemical fibers in relation to the chemical solution 20. That is, if a chemical containing boric acid is used as described above, it is desirable to mix an appropriate amount of polyvinyl alcohol fiber in the fiber raw material in addition to the pulp derived from softwood or hardwood.

X: wet wiper laminate, 1: raw roll, 10: laminate of wet wipe base paper 1A: wet wipe base paper (continuous state), 1B: wet wipe base paper (folded state)
50 ... Embossing device, 60 ... Folding device, 20 ... Chemical liquid, 11 ... Laminated end surface (upper side), 12 ... Laminated end surface (side), 13 ... Paper surface, 30 ... Chemical liquid applying device (shower device), 40 ... Wall , 41: chemical liquid supply hole, 70: chemical liquid supply nozzle, 71: thin tube, 71x: chemical liquid supply hole, 80: bag, 81: opening of bag, 45: guide wall, L1: distance between guide walls, 46: clamping Means, F: transport surface.

Claims (4)

After folding the wet wiper base paper, this is laminated to form a laminate,
After that, this laminated body such that the lamination end face is in the vertical direction ,
By supporting this laminate from the direction of the paper surface, or by sandwiching the lower part of the laminate from the direction of the paper surface, the interlayer between the laminated end surfaces serving as the upper surface is expanded,
A wet wiper comprising a step of inserting a chemical liquid supply nozzle from above between the layers from the lamination end surface, which is the upper surface of the expanded laminate, and supplying a chemical liquid between the layers from the chemical liquid supply nozzle. A method for manufacturing a laminate. After folding the wet wiper base paper, this is laminated to form a laminate,
The laminated body is inserted into the bag body with one opening so that the laminated end face faces the opening side,
The method for manufacturing a wet wiper laminate according to claim 1, wherein the one opening end face of the laminate is oriented upward with the one opening of the bag facing upward. After the lamination end surface is in the vertical direction, a chemical solution supply nozzle is inserted from above into the interlayer from the lamination end surface, which is the upper surface of the laminate, and a chemical solution is supplied from this chemical solution supply nozzle between the layers, and the bundle side surface is method for producing wipes laminate according to claim 1, wherein the imparting chemical even for. The method for producing a wet wiper laminate according to any one of claims 1 to 3 , wherein the chemical solution applying step is performed in a process of transporting the laminate.

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