JP2005348976A5 - - Google Patents

Description

Toilet paper roll

  The present invention relates to a single-ply toilet paper that provides a plump feel.

  Toilet paper rolls (also called toilet rolls) are generally formed by wrapping one or two sheets of thin paper around a paper tube. Usually, one sheet of rolled paper is called 1 ply, and two sheets of rolled paper are called two plies.

  In the case of a toilet paper roll made of 100% pulp called a pulp product, embossing is given to thin paper to give a hand feeling and a soft feeling. In such a toilet paper roll of pulp, a thin paper sheet of about 60 m for 1 ply and about 30 m for 2 ply is usually wound around a paper tube having an inner diameter of 45 mm and a thickness of 0.5 mm, and the outer diameter is about 110 mm. It is common. Recently, there is a so-called compact roll in which a paper tube having an outer diameter of about 38 mm is wound with 90 m by 1 ply and 45 m by 2 ply.

  On the other hand, recently, with the spread of hot water washing toilets, there is a demand for a sense of security when absorbing water, and an improvement in hand feeling and fluffy feeling is required.

  However, conventional thin-leaf sanitary paper rolls are too hard to roll and have poor hand feeling (thickness), soft feeling, or conversely, the winding is too loose and the center part is shifted so that it protrudes from the side. The roll was easily deformed into a bamboo shoot shape, the cross-section was easily deformed into a polygon, and the volume feeling when held in the hand was poor.

  If you want to harden the winding, it seems that you can improve the hand feeling and fluffy feeling by applying embossing as described above. As time passes, the emboss is stretched and flattened by the tension in the winding direction, and the hand feeling and fluffy feeling are lost. Further, when the compact roll is formed, the thin paper is wound around the tube core while being pulled, so that the emboss is stretched and flattened by the tension, and the hand feeling and the soft feeling cannot be improved.

  On the other hand, simply lowering the winding tension and winding softly will cause the winding to loosen, resulting in defective winding and poor volume, and the winding diameter will increase despite the short winding length. The problem of too much arises. In particular, if the emboss is clearly inserted and the paper thickness is increased and wound with a normal winding length, the embossing can be prevented from being flattened, but the winding diameter becomes too large to fit in a normal holder.

  Therefore, the present applicant is rich in hand feeling and fluffy feeling, but is not easily deformed, has a sufficient volume feeling when held in the hand, and even when embossed, it is difficult to flatten the embossed, The thin leaf sanitary paper roll was previously proposed (Patent Document 1).

Pertaining to this proposal, although is excellent, the winding length of about 60 m, the winding density Example 1, 0.743m / cm ^2, a second embodiment in 0.714m / cm ^2, The degree of bulkiness per winding length is not high.
Japanese Patent No. 3180916

  Therefore, the main problem of the present invention is that it is rich in hand feeling and softness, but is not easily deformed, has a sufficient volume feeling when held in the hand, and even when embossing is applied, the embossing is flattened. An object of the present invention is to provide a toilet paper roll having a higher degree of bulkiness than a difficult toilet paper roll.

To solve the above problems, the present invention is as follows.
<Invention of Claim 1>
In a toilet paper roll in which a stack of toilet paper is wound around a core tube,
A toilet paper roll having a winding length of 41 m or more and less than 60 m and a roll winding density of 0.49 to 0.74 m / cm ² .
Here, the roll winding density is a value obtained by dividing the length of one roll by the area of the plane orthogonal to the roll central axis.

<Invention of Claim 2>
The toilet paper roll according to claim 1, wherein at least a fatty acid ester compound is added.

<Invention of Claim 3>
The toilet paper roll according to claim 1 or 2, wherein a softener component containing at least one of (a) a fatty acid ester compound and (b) a fatty acid amide compound is added by internal or external addition.

<Invention of Claim 4>
The toilet paper roll according to any one of claims 1 to 3, wherein the fatty acid ester compound is a cationic fatty acid ester compound.

  According to the present invention, toilet paper that is rich in hand feeling and softness, is not easily deformed, has a sufficient volume feeling when held in the hand, and is difficult to flatten even when embossed. In the roll, a toilet paper roll having a higher degree of bulk can be provided.

  Further, as a specific form for increasing the degree of bulkiness, the addition of a fatty acid ester compound not only exhibits a function as a softening agent, but also has a remarkable bulky effect, leading to the completion of the present invention. It was.

  Since the toilet paper roll of the present invention is particularly remarkable in bulkiness, when the outer diameter is about 110 mm, the winding length is short. However, the applicant has found through market research that bulky products tend to be preferred even when the winding length is short. In addition, the bulkiness of toilet paper rolls is particularly remarkable. In actual use, the edges of the paper can be clearly seen, and the difference in the edges of the paper is large, so that it can be immediately discerned by touch. Even if it is a 1 ply toilet paper roll, there exists an advantage which becomes easy to pick.

The present invention will be further described with reference to embodiments.
In the present invention, the winding density is 0.49 to 0.74 m / cm ² , and more preferably 0.655 to 0.705 m / cm ² . When the winding density is high, the winding is too hard and the hand feeling and fluffy feeling are poor, and when the winding density is low, deformation tends to occur and the volume feeling when held in the hand becomes poor.

  The winding density alone is unlikely to be an indicator of the bulkiness of the actual product. Therefore, in order to show the difference between the toilet paper roll of the present invention and that of the conventional example, the winding length is also used as an index. The winding length of the present invention is 41 m or more and less than 60 m, and more preferably 50 to 58 m.

Preferred examples of other characteristics are listed below.
(1) The dry tensile strength per ply measured by the tensile property test method defined in JISP8113 is 40 N / m or more in the width direction and 1.0 to 4.4 in the width direction in the longitudinal direction. Must be 0 times.
In this way, the tensile strength during drying in the width direction is increased to a necessary and sufficient level, and further, the tensile strength during drying in the longitudinal direction is set to 1.0 to 4.0 times the tensile strength during drying in the width direction. Thus, even if the winding density is within the range described in claim 1, the thin paper becomes thin and difficult to be compacted at the time of winding and thereafter, and a hand feeling, soft feeling and volume feeling at the time of use are sufficiently secured. In particular, when embossing is applied to thin paper, the embossing is difficult to flatten and remains clear even during use, and hand feeling, soft feeling, and volume feeling are less likely to be impaired.

(2) The number of crepes per ply is 25 to 45 / cm, and the elongation in the longitudinal direction is 15 to 25%.
By forming such a crepe (a plurality of ridges along the width direction and provided in the longitudinal direction), the elongation ratio in the longitudinal direction is 15 to 25%, so that hand feeling, soft feeling and volume feeling at the time of use can be obtained. In addition, the embossing becomes even more difficult to flatten, particularly when embossing is applied.

(3) The basis weight per ply is 15 to 25 g / m ² , the density is 0.10 to 0.15 g / cm ³ , and the thickness is 120 to 170 μm.

(4) The pulp raw material is mainly composed of softwood bleached kraft pulp and hardwood bleached kraft pulp, and the weight ratio of softwood bleached kraft pulp and hardwood bleached kraft pulp is 10:90 to 70:30. .

(5) One ply with embossing.
The present invention is particularly suitable for a toilet paper roll to which embossing has been applied, and as described above, the embossing that has been applied is difficult to flatten and remains vivid even during use, and the hand feeling, softness, and volume are less likely to be impaired. The effect is exhibited.

(6) Considering the attachment to a general roll holder, the outer diameter is about 100 to 118 mm. In the range of the winding density of the present invention, by setting the winding length in the above range, the outer diameter can be set in a range that can be attached to a general roll holder. Of course, even in this case, the above-described effects can be sufficiently achieved.

(7) The outer diameter is wound around a tube core of 30 to 42 mm.

(8) In making paper, it is desirable to make thin paper by setting the ratio of the water flow speed / wire speed (J / W ratio) to 0.92 to 1.00.
Thus, by making a thin paper with a ratio of water flow rate / wire speed (J / W ratio) of 0.92 to 1.00, the amount of fibers oriented in the longitudinal direction is oriented in the width direction. Thus, the tensile strength in the longitudinal direction of the manufactured roll can be made 1.0 to 4.0 times the tensile strength in the width direction when dried. Accordingly, the thin paper is not easily compacted at the time of winding or thereafter, and a hand feeling, soft feeling and volume feeling at the time of use are sufficiently secured. In particular, when embossing is applied to thin paper, the embossing is difficult to flatten and remains clear even during use, and hand feeling, soft feeling, and volume feeling are less likely to be impaired.

Hereinafter, embodiments of the present invention will be described in detail with reference to an example of a cored toilet paper roll.
FIG. 1 shows a cored toilet paper roll example 1 in which one or two sheets of thin paper P are wound around a tube core 1A such as a paper tube. Here, when the meaning of the term of the present invention is clarified, the winding length means the length in the winding direction (longitudinal direction) of the thin paper P, and the roll cross-sectional area is a surface perpendicular to the central axis of the roll. Area (equal to the area of the side plane 1S). The width direction refers to a direction parallel to the central axis direction (a direction perpendicular to the longitudinal direction).

And in this invention, it forms so that the winding density determined as a value which divided | segmented roll roll length by roll cross-sectional area may be 0.49-0.74 m / cm < ² >. The winding density can be adjusted by adjusting the tensile force applied to the thin paper P during winding. As mentioned above, if the winding density is too high, the winding will be too hard and the emboss will disappear and the hand feeling and soft feeling will be lost.On the other hand, if the winding density is too low, the winding will loosen and the roll will be bamboo-like In addition to being easily deformed, the cross-sectional shape is easily deformed into a polygon, and the volume feeling when held by hand is lost.

  The strength per sheet of the thin paper P is a necessary and sufficient degree that the tensile strength in the width direction measured by the tensile property test method defined in JISP8113 is 40 N / m or more, preferably 40 to 45 N / m. Further, it is desirable that the tensile strength at the time of drying in the longitudinal direction is 1.0 to 4.0 times, preferably 2.5 to 3.5 times the tensile strength at the time of drying in the width direction. As a result, even if the winding density of the present invention is used, the thin paper sheet P becomes thin and difficult to be compacted at the time of winding or thereafter, and a hand feeling, soft feeling and volume feeling at the time of use are sufficiently secured. In particular, when embossing (not shown) is imparted to the thin paper P, the embossing is difficult to flatten and remains clear even during use, and the hand feeling, soft feeling, and volume feeling are less likely to be impaired.

  In order to produce such a thin paper P, it is recommended that the ratio of the water flow speed / wire speed (J / W ratio) is 0.92 to 1.00 when making the paper. As a result, the amount of fibers oriented in the longitudinal direction is equal to or greater than the amount of fibers oriented in the width direction, and the dry tensile strength in the longitudinal direction of the manufactured roll is 1.0 to 4 of the tensile strength in the width direction when dried. .0 can be increased.

  As is well known, a paper tube made of cardboard having a thickness of about 0.5 mm is suitable as the tube core 1A used in the case with a core type, but a tube made of resin or the like can also be used. The inner diameter of the paper tube 1A is preferably about 30 to 42 mm. The diameter of the shaft-mounted roll holder and the width of the holding piece of the one-touch type roll holder are about 20 to 25 mm, and those with a paper tube inner diameter of 30 mm or less do not fit well or are difficult to turn. Further, when the inner diameter of the paper tube is reduced, the paper tube may be twisted during winding of the roll, which may cause a defective winding product.

Further, as the thin paper P constituting the roll of the present invention, the basis weight per sheet is 15 to 25 g / m ² , the density is 0.10 to 0.15 g / cm ³ , and the thickness is 120 to 170 μm, particularly The thing of 150-160 micrometers is desirable.

  In particular, in this type of toilet paper roll, crepes (those along the width direction and provided in the longitudinal direction) may be attached to the thin paper, but this can also be adopted in the present invention, and the number of crepes can be increased. It is preferable that the elongation is 25 to 45 / cm, particularly 42 to 45 / cm, and the elongation in the longitudinal direction is 15 to 25%, particularly 22 to 25%.

  The thin paper P constituting the roll of the present invention is mainly composed of softwood bleached kraft pulp (NBKP) and hardwood bleached kraft pulp (LBKP), and the weight ratio of softwood bleached kraft pulp and hardwood bleached kraft pulp is 10: It is desirable to use 90-70: 30. In particular, when NBKP: LBKP is in the range of 1: 1 to 1: 2, it is possible to achieve both improvement in strength by using softwood bleached kraft pulp and improvement in flexibility by using hardwood bleached kraft pulp. .

Furthermore, in the present invention, hand feeling and fluffy feeling can be improved by using the thin paper P to which embossing is applied. As described above, thin leaf sanitary paper rolls with embossing have been known, but the embossing is stretched and flattened by the tension in the winding direction during winding and as time passes, resulting in a hand feeling and soft feeling. Will be lost. On the other hand, the roll of the present invention has a winding density of 0.49 to 0.74 m / cm ² , so that the embossing that is imparted is hard to flatten and remains clear even during use, and feels hand-feeling, softness, volume A feeling is hard to be spoiled. In the present invention, a known embossing technique and emboss shape / arrangement can be adopted. Specifically, prior to winding, a method of forming embossing by pressing thin paper between a steel roll engraved with an embossed pattern and a rubber roll, or a steel roll having a male embossed pattern and a female embossed pattern It is possible to adopt a technique of forming embossing by passing thin paper between the steel rolls having pressure.

  On the other hand, when applied to a toilet paper roll as in this example, it is desirable that the outer diameter of the roll be about 100 to 118 mm. In particular, it is desirable that the outer diameter be 110 to 115 mm in order to easily fit in the roll holder and to be easily rotated during use.

  Therefore, in the present invention, in the case of a one-ply product, the winding length is set to 41 m or more and less than 60 m. For reference, when the sanitary thin paper of the present invention has two plies, the winding length may be 29 to 33 m. The outer diameter of the tube core 1A may be 30 to 42 mm, particularly preferably 36 to 39 mm.

  In order to obtain the toilet paper roll of the present invention, it can be obtained by selecting various elements. That is, the blending ratio of LBKP and NBKP as pulp raw materials, the type of pulp (fiber roughness, or the type and age of trees as raw materials), beating degree, papermaking moisture, calendar gap / pressure / material, addition of chemicals and its It is possible to adjust the amount. It is desirable that the pulp does not contain waste paper pulp.

  Further, the tensile strength, aspect ratio, crepe shape (crepe rate, crepe height difference, etc.), moisture content, density, addition of paper strength agent, addition of chemicals and the amount thereof can be adjusted. The surface characteristics can be adjusted by pulp blending, calendar conditions, papermaking moisture, doctor blade edge angle, blade angle, balance of adhesion / peeling strength, crepe rate, addition of chemicals and the amount thereof.

(About additives)
In the present invention, it is desirable to add a fatty acid ester softener. In particular, it is desirable to add both a cationic fatty acid ester chemical and a nonionic fatty acid ester chemical. Further, it is desirable to add the internal addition to (a) these one or both of the fatty acid ester-based chemical, and (b) fatty acid amide chemical. Although it is conceivable to add the additive by external addition such as spray coating or transfer coating, the effect is extremely small, and therefore, a method of making paper by internal addition, that is, mixing into a papermaking raw material is particularly desirable.

  As addition amount of a chemical | medical solution, 0.002-10 mass parts is desirable with respect to 100 mass parts of pulp raw materials on a dry mass basis. The ratio (a) / (b) is preferably 0.1 to 500.

  When the fatty acid ester chemical solution (a) adheres to the fiber, it penetrates into the inside of the fiber and prevents the inside of the lumen (inner hole part) from being hydrogen-bonded and crushed during drying, thus making the paper quality bulky and fluffy. Can do. However, if it is not cationic, it is difficult to be fixed on the fiber by itself, and it is difficult to exert the effect.

  In addition, the fatty acid amide can coat the surface of each fiber, give a smooth surface, and improve the smoothness of the paper surface.

  If necessary, polyethylene glycol, glycerin, 1,3-butylene glycol, 1,2-pentanediol, erythritol, sorbitol, xylitol, maltitol, propylene glycol, dipropylene glycol, diglycerin, sodium pyrrolidonecarboxylate, lactic acid, sodium lactate, etc. A moisturizing agent such as can be added.

  Further, since the paper strength may be lowered by using the softening agent, it is desirable to add a paper strength agent such as starch, polyacrylamide surface paper strength agent or polyvinyl alcohol, particularly starch.

The softener component will be further described as follows.
It is desirable to add a cationic surfactant to the toilet paper roll. Although the kind of the cationic surfactant is not particularly limited, the amine compound having at least one saturated or unsaturated hydrocarbon group having 6 to 26 carbon atoms in the molecule or a neutralized product thereof or 4 Graded products or mixtures thereof are preferred. More specifically describing suitable amine compounds or neutralized products or quaternized products thereof, these compounds have at least 1, preferably 1 to 2, most preferably 2, 6 to 26 carbon atoms in the molecule. Preferably it has 14-22 saturated or unsaturated hydrocarbon groups, such as an alkyl group or an alkenyl group. The hydrocarbon group may have an ester group, reverse ester group, amide group, reverse amide group, or ether group in the chain. In addition, these hydrocarbon groups are derived from plants such as fatty acids obtained by hydrogenation or partial hydrogenation of unhydrogenated fatty acids or unsaturated parts derived from beef tallow, which are usually used industrially, palm palms, oil palms, etc. This can be introduced by using a fatty acid, a fatty acid ester or the like obtained by hydrogenation or partial hydrogenation of an unhydrogenated fatty acid, fatty acid ester or unsaturated part.

（但し、式中、Ｒ³は炭素数６〜２４のアルキル基又は炭素数６〜２４のアルケニル基を、Ｒ⁴とＲ⁵とは（ＥＯ）_m（ＰＯ）_nＨ、炭素数１〜２４のアルキル基、及び炭素数１〜２４のアルケニル基から選ばれる１種を示し、かつＲ⁴とＲ⁵とは同一又は相異していてもよく、Ｘ^-は陰イオンであり、前記Ｅはエチレン基を示し、前記Ｐはプロピレン基を示し、前記ｍとｎとの合計は１〜６０である。なお、ｍ及びｎは平均付加モル数である。） Moreover, the compound represented by following General formula (1) can also be used conveniently.

(In the formula, R ³ is an alkyl group having 6 to 24 carbon atoms or an alkenyl group having 6 to 24 carbon atoms, and R ⁴ and R ⁵ are (EO) _m (PO) _n H, 1 to 24 carbon atoms). And R ⁴ and R ⁵ may be the same or different, X ⁻ is an anion, and E is An ethylene group, P represents a propylene group, and the sum of m and n is 1 to 60, where m and n are the average number of moles added.

  In particular, trimethyl monoalkyl ammonium halide having an alkyl group having 6 to 24 carbon atoms and / or dimethyl dialkyl ammonium halide having an alkyl group having 6 to 24 carbon atoms can be used.

（但し、式中、Ｒ⁶は炭素数６〜２４のアルキル基又は炭素数６〜２４のアルケニル基を、Ｒ⁷は炭素数１〜２４のアルキル基又は炭素数１〜２４のアルケニル基を示し、Ｘ^-は陰イオンである。） Moreover, it can be set as the quaternary ammonium salt which has an imidazoline ring which has an alkyl group and / or an alkenyl group. Here, the quaternary ammonium salt having an imidazoline ring can be a compound represented by the following general formula (2).

(In the formula, R ⁶ represents an alkyl group having 6 to 24 carbon atoms or an alkenyl group having 6 to 24 carbon atoms, and R ⁷ represents an alkyl group having 1 to 24 carbon atoms or an alkenyl group having 1 to 24 carbon atoms. , X ⁻ is an anion.)

  In the present invention, an alkoxylated fatty acid ester can be used.

  Furthermore, as a cationic surfactant that can be used in the present invention, there is an alkylammonium salt represented by R1R2R3R4N + X-. Wherein R1 is selected from an alkyl group having from about 12 to about 18 carbon atoms, or an aromatic aryl or alkaryl group having from about 12 to about 18 carbon atoms; R2, R3 and R4 are independently hydrogen atoms , An alkyl group having about 1 to about 18 carbon atoms, or an aromatic aryl or alkaryl group having about 12 to about 18 carbon atoms; X is chloride, bromide, iodide, acetate, phosphate, nitrate, sulfate, An anion selected from methyl sulfate, ethyl sulfate, tosylate, lactate, citrate, glycolate, and mixtures thereof. The alkyl group can also contain an ether linkage, or a hydroxy or amino group substituent (eg, the alkyl group can contain polyethylene glycol and polypropylene glycol moieties).

  Other useful cationic surfactants include those in which R1 is R5CO— (CH2) n—, wherein R5 is an alkyl group having from about 12 to about 18 carbon atoms; 2 to about 6, preferably about 2 to about 4, more preferably an integer of about 2 to about 3. Non-limiting examples of these cationic emulsifiers include stearamide propyl PG-dimonium chloride phosphate, stearamide propyl ethyl dimonium ethosulphate, stearamide propyl dimethyl (myristyl acetate) ammonium chloride, stearamide propyl dimethyl cetearyl. There are ammonium tosylate, stearamidopropyldimethylammonium chloride, stearamidopropyldimethylammonium lactate, and mixtures thereof.

  Non-limiting examples of quaternary ammonium salt cationic surfactants include cetylammonium chloride, cetylammonium bromide, laurylammonium chloride, laurylammonium bromide, stearylammonium chloride, stearylammonium bromide, cetyldimethylammonium chloride, cetyldimethylammonium bromide , Lauryldimethylammonium chloride, lauryldimethylammonium bromide, stearyldimethylammonium chloride, stearyldimethylammonium bromide, cetyltrimethylammonium chloride, cetyltrimethylammonium bromide, lauryltrimethylammonium chloride, lauryltrimethylammonium bromide, stearyltrimethylammonium chloride, Tearyl trimethyl ammonium bromide, lauryl dimethyl ammonium chloride, stearyl dimethyl cetyl ditallow dimethyl ammonium chloride, dicetyl ammonium chloride, dicetyl ammonium bromide, dilauryl ammonium chloride, dilauryl ammonium bromide, distearyl ammonium chloride, distearyl ammonium bromide, There are those selected from the group consisting of dicetylmethylammonium chloride, dicetylmethylammonium bromide, dilaurylmethylammonium chloride, dilaurylmethylammonium bromide, distearylmethylammonium chloride, distearylmethylammonium bromide, and mixtures thereof. Additional quaternary ammonium salts include those in which a C12-C22 alkyl carbon chain is derived from a tallow fatty acid or from a coconut fatty acid. The term “tallow” refers to an alkyl group derived from a tallow fatty acid (usually hydrogenated tallow fatty acid) having a mixture of alkyl chains generally in the range of C12 to C18. The term “coconut” refers to an alkyl group derived from a coconut fatty acid (usually hydrogenated tallow fatty acid) having a mixture of alkyl chains, generally in the C12 to C18 range. Examples of quaternary ammonium salts derived from tallow and coconut sources include ditallow dimethyl ammonium chloride, ditallow dimethyl ammonium methyl sulfate, di (hydrogenated tallow) dimethyl ammonium chloride, di (hydrogenated tallow) dimethyl ammonium acetate, di Tallow dipropylammonium phosphate, ditallow dimethylammonium nitrate, di (coconut alkyl) dimethylammonium chloride, di (coconut alkyl) dimethylammonium bromide, tallow ammonium chloride, coconut ammonium chloride, stearamide propyl PG-dimonium chloride phosphate, stearate Aramidpropyl ethyl dimonium ethosulphate, stearamide dimethyl (myristyl acetate) ammonium chloride Chloride, stearamidopropyl dipropyl methyl cetearyl ammonium tosylate, stearamidopropyl dimethyl ammonium chloride, stearamidopropyl dimethyl ammonium lactate, and mixtures thereof.

  Preferred cationic surfactants useful herein comprise dilauryldimethylammonium chloride, distearyldimethylammonium chloride, dimyristyldimethylammonium chloride, dipalmityldimethylammonium chloride, distearyldimethylammonium chloride, and mixtures thereof. Some are chosen from the group.

  On the other hand, as a softening agent that can be used in the present invention, polyethylene polyamine higher fatty acid amide type cationic surfactants, imidazoline type cationic surfactants and quaternary ammonium salt type cationic surfactants such as alkyldimethylammonium chloride, etc. Among these, a polyethylene polyamine higher fatty acid amide type cationic surfactant having a large flexibility imparting effect is particularly preferable.

  Such polyethylene polyamine higher fatty acid amide type cationic surfactants include polyethylene polyamine higher fatty acid amide (e1), polyoxyalkylene polyethylene polyamine higher fatty acid amide (e2), urea condensate of polyethylene polyamine higher fatty acid amide (e3), poly Oxyalkylene polyethylene polyamine higher fatty acid amide urea condensate (e4), epichlorohydrin adduct (e5) of (e1) to (e4), alkyl chloride quaternized salt of polyethylene polyamine higher fatty acid amide (e6), polyethylene polyamine higher fatty acid Examples include amido monochloroacetic acid addition amphoteric compound (e7) and a partial imidazolinium salt of polyethylenepolyamine higher fatty acid amide (e8).

  Examples of the polyethylene polyamine that is a constituent of (e1) to (e8) include diethylenetriamine, triethylenetetramine, and tetraethylenepentamine. Of these, preferred are diethylenetriamine and triethylenetetramine.

  The polyoxyalkylene group constituting (e2) or (e4) is a group to which an alkylene oxide is added. Examples of the alkylene oxide include ethylene oxide, propylene oxide, and butylene oxide. Among these, ethylene oxide and a combination of ethylene oxide and propylene oxide (block or random addition) are preferable. The mixing weight ratio when ethylene oxide and propylene oxide are used in combination is preferably 1: (0.1 to 1.0). The added mole number of alkylene oxide is usually 1 to 10 moles, preferably 1 to 5 moles.

  As higher fatty acids that are constituents of (e1) to (e8), those derived from natural fats and oils such as palm oil, beef tallow, rapeseed oil, rice bran oil, fish oil and the like are usually used, but are produced by petrochemistry. Synthetic higher fatty acids can also be used. Among these, higher fatty acids having an iodine value of 50 or less and 12 to 24 carbon atoms are preferable.

  The molar ratio of polyethylene fatty acid or polyoxyalkylene polyethylene polyamine which is the other component of these (e1) to (e8) and higher fatty acid is usually 1: 1.0 to 2.5, preferably 1: 1.2. ~ 1.8. Among the above-exemplified (e1) to (e8), preferred are (e1) to (e5).

In the present invention, a quaternary ammonium salt disclosed in Japanese Patent Application Laid-Open No. 2000-96440 (one or two or more kinds shown in paragraphs 0009 and 0010 is used here) is used. it is desirable to use ester type a Nmonyuumu salts obtained by quaternizing the ester consisting of a fatty acid and an alkanolamine.

Hereinafter, the effects of the present invention will be clarified by showing examples.
As shown in Table 1, various types of toilet paper rolls are manufactured or obtained, and tensile strength is measured. Softness, softness, hand feeling, appearance of embossing (residence of embossing), roll shape and volume The feeling was evaluated in 5 stages by 50 people, and the average value was used as the evaluation value. The measurement results and evaluation results are also shown in Table 1. In Table 1, Conventional Example 1 is Example 1 of Patent Document 1, Reference Examples 1 and 2 are two-ply products of the thin paper of the present invention, and Comparative Reference Example 2 is Example 2 of Patent Document 1. Each is shown.

  As is clear from Table 1, Examples 1 and 2 according to the present invention were superior to Comparative Examples 1 and 2 and the commercial product, and had a softness, softness, hand feeling, and embossed appearance (embossed appearance). Residual condition) and a roll shape / volume feeling. In particular, it can be seen that the toilet paper roll of the present invention is a toilet paper roll having a large volume feeling although the winding length is relatively short.

It is a schematic perspective view of the example of a toilet paper roll with a core.

Explanation of symbols

  1 ... toilet paper roll with core, 1A ... paper tube (core), P ... thin paper.

Claims (4)

In a toilet paper roll in which a stack of toilet paper is wound around a core tube,
A toilet paper roll having a winding length of 41 m or more and less than 60 m and a roll winding density of 0.49 to 0.74 m / cm ² .
Here, the roll winding density is a value obtained by dividing the length of one roll by the area of the plane orthogonal to the roll central axis.   The toilet paper roll according to claim 1, wherein at least a fatty acid ester compound is added.   The toilet paper roll according to claim 1 or 2, wherein a softener component containing at least one of (a) a fatty acid ester compound and (b) a fatty acid amide compound is added internally or externally.   The toilet paper roll according to any one of claims 1 to 3, wherein the fatty acid ester compound is a cationic fatty acid ester compound.