WO2017056712A1 - ティシュペーパー - Google Patents
ティシュペーパー Download PDFInfo
- Publication number
- WO2017056712A1 WO2017056712A1 PCT/JP2016/072948 JP2016072948W WO2017056712A1 WO 2017056712 A1 WO2017056712 A1 WO 2017056712A1 JP 2016072948 W JP2016072948 W JP 2016072948W WO 2017056712 A1 WO2017056712 A1 WO 2017056712A1
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- WIPO (PCT)
- Prior art keywords
- tissue paper
- paper
- mass
- propanediol
- glycerin
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
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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
- A47K7/00—Body washing or cleaning implements
- A47K7/02—Bathing sponges, brushes, gloves, or similar cleaning or rubbing implements
- A47K7/03—Bathing sponges, brushes, gloves, or similar cleaning or rubbing implements containing soap or other cleaning ingredients, e.g. impregnated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B29/00—Layered products comprising a layer of paper or cardboard
- B32B29/06—Layered products comprising a layer of paper or cardboard specially treated, e.g. surfaced, parchmentised
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/12—Coatings without pigments applied as a solution using water as the only solvent, e.g. in the presence of acid or alkaline compounds
-
- 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
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/22—Agents rendering paper porous, absorbent or bulky
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/12—Coating on the layer surface on paper layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2255/00—Coating on the layer surface
- B32B2255/24—Organic non-macromolecular coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/54—Yield strength; Tensile strength
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/718—Weight, e.g. weight per square meter
Definitions
- the present invention relates to tissue paper, and in particular to tissue paper containing a moisturizing agent.
- Tissue paper consists of a moisturizing tissue called moisturizer, a moisturizing tissue containing a moisturizing agent, and a non-humidifying tissue called a general-purpose type that does not contain a moisturizing agent. Can be broadly classified.
- Moisturizing tissue is mainly used for touching the skin, such as a beard and makeup remover, and especially requires good touch when used.
- the quality characteristics of tissue paper mainly include “softness”, “smoothness”, “moistness”, “stickiness”, “thickness”, and “sturdiness (strength / security)”.
- the moisturizing tissue is superior to the non-moisturizing tissue in terms of “softness”, “smoothness”, and “moistness” due to the effect of the moisturizing agent, but the conventional moisturizing tissue is particularly “smooth”.
- “moist feeling” there is nothing that satisfies both of them at a high level.
- the conventional moisturizing tissue improves the “softness” and “moistness” by increasing the moisture retention in the paper by the moisture absorbing action of the moisturizing agent, and the “smoothness” is also felt accompanying it. It was that. However, when the content of the conventional moisturizing agent is increased, the “moist feeling” is increased, but the “stickiness” is also increased at the same time, and accordingly, the “smoothness” of the surface is reduced and it becomes difficult to feel. Further, the excessive moisturizing agent is a factor that reduces the stiffness of the paper, and this reduction in the stiffness of the paper also makes it difficult to feel “smoothness”. Furthermore, strength properties physically required for use such as “durability” are impaired, and the feeling of thickness and paper thickness are also reduced.
- the conventional moisturizing tissue paper is applied as polyhydric alcohols and sugars such as glycerin and sorbitol as the main moisturizing agent as the moisturizing agent, but with this conventional chemical solution, its concentration and coating amount are adjusted.
- this conventional chemical solution its concentration and coating amount are adjusted.
- both “moist feeling” and “smoothness” are improved, and further, quality improvement that does not impair “durability” and “thickness” cannot be performed.
- the main problem of the present invention is to improve both “moist feeling” and “smoothness” particularly in the moisturizing tissue, and “smoothness” while having the “moist feeling” not found in the conventional moisturizing tissue. It is an object to provide a moisturizing tissue that can feel remarkably and is also excellent in “durability” and “thickness”.
- a two-ply tissue paper The basis weight per ply is less than 12.9 g / m 2 Ultra 16.8 g / m 2,
- the paper thickness in 2 plies is 128 ⁇ m or more and 150 ⁇ m or less,
- the total content of glycerin and 1,3-propanediol is 83.7% by mass or more, and the mass ratio of glycerin to 1,3-propanediol is more than 1: 0.14 and less than 1: 6.64.
- the drug contains less than 2.3 g / m 2 ultra 6.1 g / m 2, Tissue paper characterized by that.
- a two-ply tissue paper The basis weight per ply is at 13.5 g / m 2 or more 16.1 g / m 2 or less, The paper thickness in 2 plies is 128 ⁇ m or more and 150 ⁇ m or less, The total content of glycerin and 1,3-propanediol is 83.7% by mass or more, and the mass ratio of glycerin to 1,3-propanediol is more than 1: 0.14 and less than 1: 6.64. the drug, contains less than 2.3 g / m 2 ultra 6.1 g / m 2, Tissue paper characterized by that.
- the dry tensile strength in the CD direction of 2 plies is more than 63 cN / 25 mm and not more than 133 cN / 25 mm,
- the wet tensile strength in the CD direction of 2 plies is more than 39 cN / 25 mm and not more than 59 cN / 25 mm,
- the tissue paper according to claim 1 or 2 wherein the ratio of the wet tensile strength in the CD direction of the two plies to the dry tensile strength in the CD direction of the two plies is 0.30 or more.
- the inventors of the present invention have completed the tissue paper according to the present invention as a result of examining the selection, blending ratio, and paper physical properties of various drugs with the aim of achieving both “moist feeling” and “smoothness” in the moisturizing tissue. .
- 2 a ply of tissue paper 1 basis weight per ply is 12.9 g / m 2 Ultra 16.8 g / m less than 2, preferably 1 basis weight per ply is 13.5 g / m 2 16.1 g / m 2 or less, the paper thickness in two plies is 128 ⁇ m or more and 150 ⁇ m or less, and particularly includes 83.7% by mass or more of glycerin and 1,3-propanediol,
- the dry tensile strength in the CD direction of 2 plies is more than 63 cN / 25 mm and not more than 133 cN / 25 mm, and the wet tensile strength in the CD direction of 2 plies is more than 39 cN / 25 mm and not more than 59 cN / 25 mm.
- the ratio of the two-ply wet tensile strength in the CD direction to the dry tensile strength in the CD direction is preferably 0.30 or more.
- Tissue paper according to the present embodiment is a tissue paper of 2-ply basis weight per ply 12.9 g / m 2 Ultra 16.8 g / m less than 2, preferably the basis weight per ply 13 0.5 g / m 2 or more and 16.1 g / m 2 or less, and the paper thickness at 2 plies is 128 ⁇ m or more and 150 ⁇ m or less.
- tissue paper has a relatively medium basis weight and paper thickness among tissue papers.
- Tissue paper has been broadly divided into high-basis weight and high-thickness general-purpose types, and low-basis weight and thin-thick general-purpose types.
- tissue paper with a thickness and in particular, this type is required to have a softness and smoothness that is inexpensive but not inferior to a high-grade type.
- the basis weight is a value measured based on JIS P 8124 (1998).
- the paper thickness is measured by fully adjusting the humidity of the specimen under the conditions of JIS P8111 (1998), and then using the dial thickness gauge (thickness measuring instrument) "PEACOCK G type" (manufactured by Ozaki Seisakusho) under the same conditions. It shall be measured in the state of 2 plies using. Specifically, confirm that there is no dust, dust, etc. between the plunger and the measuring table, lower the plunger on the measuring table, move the dial thickness gauge memory to adjust the zero point, and then Raise the plunger, place the sample on the test bench, slowly lower the plunger and read the gauge at that time. At this time, only the plunger is placed.
- the dial thickness gauge thickness measuring instrument
- the terminal of the plunger is made of metal so that a circular plane having a diameter of 10 mm is perpendicular to the plane of the paper, and the load at the time of measuring the paper thickness is about 70 gf.
- the paper thickness was an average value obtained by performing measurement 10 times.
- the tissue paper according to the present embodiment includes 83.7% by mass or more of glycerin and 1,3-propanediol, and the mass ratio of glycerin to 1,3-propanediol (1,1 with respect to glycerin 1). weight ratio of 3-propanediol) is 1: 0.14 ultra 1: the agent is less than 6.64, 2.3g / m 2 containing less than ultra 6.1 g / m 2.
- the total amount of glycerin and 1,3-propanediol is less than 83.7% by mass, both “moist feeling” and “smoothness” are not sufficiently improved.
- the fiber material constituting the tissue paper according to the present embodiment is also a pulp fiber, and is desirably NBKP and LBKP used for tissue paper.
- waste paper pulp may be blended, it is preferable that it is composed only of NBKP and LBKP of virgin pulp.
- the dry tensile strength in the CD direction of 2 plies is more than 63 cN / 25 mm and not more than 133 cN / 25 mm, and the wet tensile strength in the CD direction of 2 plies is more than 39 cN / 25 mm and not more than 59 cN / 25 mm.
- the ratio of the wet tensile strength in the CD direction of the two plies to the dry tensile strength in the CD direction of the two plies is preferably 0.30 or more.
- the dry tensile strength is defined in JIS P 8113, and the wet tensile strength is defined in JIS P 8135 (1998).
- the tissue paper according to the present embodiment has a ratio of the wet tensile strength in the CD direction of the two plies to the dry tensile strength in the CD direction of the two plies is 0.30 or more, compared with a general moisture retaining tissue.
- the strength difference between dry and wet is relatively small. This can be easily achieved by having a characteristic moisturizing agent composition and basis weight related to the tissue paper according to the present embodiment, and particularly due to such a difference in strength.
- a dry paper strength enhancer or a wet paper strength enhancer is added to the paper or wet paper.
- a dry paper strength enhancer starch, polyacrylamide, CMC (carboxymethylcellulose) or a salt thereof such as sodium carboxymethylcellulose, carboxymethylcellulose calcium, carboxymethylcellulose zinc and the like can be used.
- the wet paper strength enhancer polyamide polyamine epichlorohydrin resin, urea resin, acid colloid / melamine resin, thermally crosslinkable coating PAM, and the like can be used.
- the amount added is about 0.5 to 1.0 kg / t in terms of the weight ratio to the pulp slurry.
- the wet paper strength enhancer is desirably a cationic one, and the addition amount thereof is about 5.0 to 20.0 kg / pulp t with respect to the pulp slurry.
- the tissue paper according to the present embodiment can be manufactured by a method similar to the method of manufacturing a conventional moisturizing tissue. That is, a single-layer tissue paper base having a crepe made by a paper making facility is wound up to form a primary roll, and two of these are set in a laminating facility also called a ply machine. A single-layer continuous sheet is fed out from the anti-roll and laminated, and then wound as a secondary original roll by appropriately slitting. And using this secondary fabric roll, tissue paper is commercialized by forming a laminated bundle in a folding facility or the like called an interfolder and cutting it into an appropriate size. And it can manufacture by providing a chemical
- the moisturizing liquid according to this embodiment contains 83.7% by mass or more of glycerin and 1,3-propanediol in the active ingredient, and the mass ratio of glycerin to 1,3-propanediol is 1: 0. .14 over 1:14 may be adjusted to be less than 6.64.
- the moisturizing chemical solution is adjusted to a viscosity according to the coating method using a solvent such as water as appropriate based on the above active ingredient.
- a solvent such as water as appropriate based on the above active ingredient.
- other known auxiliaries can be added as long as the effects of glycerin and 1,3-propanediol are not hindered.
- the auxiliary agent in these moisturizing liquids may be contained in tissue paper after application to constitute the drug.
- auxiliaries include moisturizing auxiliary components such as sorbitol, hydrophilic polymer gelling agents such as glucomannan, and surfactants and phosphates, etc., to increase the retention of moisture in tissue paper.
- auxiliary components such as sorbitol, hydrophilic polymer gelling agents such as glucomannan, and surfactants and phosphates, etc.
- examples include improvers, oily components such as liquid paraffin that assist in the expression of smoothness, other emulsifiers, preservatives, antifoaming agents, etc., for improving the stability and stability of the moisturizer.
- These auxiliaries can be incorporated as active ingredients (absolutely dry) to a total of less than 16.3% by mass.
- the moisturizing chemical solution is applied to the tissue paper base by external addition using a known chemical solution application facility such as a roll transfer device such as a flexographic printing machine or a gravure printing machine, or a spray coating device.
- the moisturizing chemical solution may be applied to the tissue paper base from one side, but it is desirable to apply both sides because it is easy to make the smoothness of both sides uniform.
- the amount of moisturizing liquid applied to the tissue paper base paper is appropriately adjusted in consideration of the evaporation of water as a solvent in the manufacturing process and the elongation of the tissue paper base paper generated in the manufacturing process.
- the tissue paper is a crepe paper with crepe
- the tissue paper expands and the applied amount decreases slightly. The tendency to do is seen. Therefore, in consideration of the elongation in such a manufacturing process, it is desirable to adjust so that the application amount of the active ingredient is slightly increased as compared with the desired application amount.
- Test papers according to the present invention and tissue papers different from the present invention were prepared, and the following sensory tests were conducted with evaluation items of “soft”, “smoothness”, “moist feeling”, and “stickiness”. I reviewed it. Moreover, the physical property value and composition value of each sample were measured as follows. The physical property values / composition values and test results of each sample are as shown in Tables 1 and 2 below.
- the density is a value obtained by dividing a value (C) obtained by doubling the basis weight of tissue paper conditioned under the conditions of JIS P 8111 (1998) by the paper thickness (D) of the above-mentioned tissue paper (2 plies).
- the unit is expressed in g / cm 3 and two decimal places.
- MMD This MMD is an average deviation of the coefficient of static friction and is one of the indices of smoothness. The smaller the numerical value, the smoother, and the larger the numerical value, the less smooth.
- the MMD measurement method is substantially the same as the direction in which the tension is applied while the contact surface of the friction element is brought into contact with the surface of the measurement sample to which a tension of 20 g / cm is applied in a predetermined direction with a contact pressure of 25 g. The sample is moved 2 cm in the same direction at a speed of 0.1 cm / s, and the friction coefficient at this time is measured using a friction tester KES-SE (manufactured by Kato Tech Co., Ltd.).
- the friction element has 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 assumed to have a unit bulge portion formed with 20 piano wires P (curvature radius 0.25 mm) at the tip.
- the drug content and the drug content can be calculated from the following sample measurements and calculations (1) to (4), and the values in the table are values based on the sample measurements.
- the drug content and the drug content may be calculated based on the composition of the moisturizing liquid and the physical properties of the base paper.
- the flask is left in a constant temperature drier at a temperature of 105 ⁇ 2 ° C. for 90 minutes to completely remove the solvent.
- the mass of the extract (B) (g) is determined by subtracting the constant mass of the flask from the mass of the flask after removal of the solvent.
- the drug adhesion rate is obtained by the following equation.
- Drug adhesion rate [(mass of extract) / ⁇ (absolute dry mass of sample) ⁇ (mass of extract) ⁇ ] ⁇ 100
- the amount and mass ratio of glycerin and 1,3-propanediol contained in the extract can be measured by a gas chromatograph mass spectrometer (GC-MS), high performance liquid chromatography (HPLC) or the like. .
- GC-MS gas chromatograph mass spectrometer
- HPLC high performance liquid chromatography
- “Comprehensive evaluation” is “5” for those who feel “good touch and very high purchase intention”, “4” for those who feel “good touch and high purchase intention”, “ “3” for those who feel that the touch is normal, and that the purchase intention is high or low can be said to be “3”; for those that feel that “the touch is poor and the purchase intention is low”, “2”, “the touch is very Those who felt that they were inferior and almost not intending to purchase were evaluated as “1”, and the average score of each evaluator was calculated as the evaluation value.
- Table 1 shows a test for each sample in which the ratio of glycerol to the blending amount of 1,3-propanediol in the drug and the ratio thereof were changed with the paper making conditions of the base paper and the coating amount of the chemical solution being constant. The result is shown.
- the reference sample for sensory evaluation is a glycerin containing no 1,3-propanediol as a main component (Comparative Example 1). A graph showing the results of the sensory evaluation is shown in FIG.
- Table 2 shows the results of testing for each sample mainly changing the content of the drug.
- the reference sample for sensory evaluation is a general-purpose sample (Comparative Example 15) to which no drug is applied.
- FIG. 2 shows a graph of the sensory evaluation results of Examples 8 to 15 and Comparative Examples 10 to 15.
- the content of the drug is within the range of the present invention, it is used as a reference sample in each evaluation item of “softness”, “smoothness”, “moist feeling”, and “stickiness”.
- the result was remarkably superior.
- “smoothness”, “moistness” and “tackiness” were very remarkably high.
- the ratio of the combined glycerin and 1,3-propanediol in the drug is within the scope of the present invention.
- both the “moist feeling” and “smoothness” are improved, and the tissue paper has a “moist feeling” and can be noticed with “smoothness”.
Abstract
Description
2プライのティシュペーパーであって、
1プライ当たりの坪量が12.9g/m2超16.8g/m2未満であり、
2プライでの紙厚が128μm以上150μm以下であり、
グリセリンと1,3-プロパンジオールとを合わせて83.7質量%以上、含み、かつ、グリセリンと1,3-プロパンジオールとの質量比が1:0.14超1:6.64未満である薬剤を、2.3g/m2超6.1g/m2未満含有する、
ことを特徴とするティシュペーパー。
2プライのティシュペーパーであって、
1プライ当たりの坪量が13.5g/m2以上16.1g/m2以下であり、
2プライでの紙厚が128μm以上150μm以下であり、
グリセリンと1,3-プロパンジオールとを合わせて83.7質量%以上、含み、かつ、グリセリンと1,3-プロパンジオールとの質量比が1:0.14超1:6.64未満である薬剤を、2.3g/m2超6.1g/m2未満含有する、
ことを特徴とするティシュペーパー。
2プライのCD方向の乾燥引張強度が63cN/25mm超133cN/25mm以下であり、
2プライのCD方向の湿潤引張強度が39cN/25mm超59cN/25mm以下であり、
2プライのCD方向の乾燥引張強度に対する2プライのCD方向の湿潤引張強度の比が、0.30以上である、請求項1又は2記載のティシュペーパー。
JIS P 8124(1998)に従って測定した。表中の値は、各プライの平均値である。
JIS P 8111(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)を用いて上述の厚みの測定方法に従って測定した。
密度は、JIS P 8111 (1998)の条件下において調湿させたティシュペーパーの坪量を2倍した値(C)を、上述のティシュペーパー(2プライ)の紙厚(D)で除した値で、単位をg/cm3、小数点2桁で表した。
JIS P 8113(1998)の引張試験に従って測定した。
JIS P 8135(1998)の引張試験に従って測定した。
JIS P 8113(1998)の引張試験に従って、ミネベア株式会社製「万能引張圧縮試験機 TG-200N」を用いて測定した。
JIS L 1096 E法に準じたハンドルオメータ法に従って測定した。但し、試験片は100mm×100mmの大きさとし、クリアランスは5mmとして実施した。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、cN/100mmを単位として表した。
このMMDは静摩擦係数の平均偏差であり、滑らかさの指標の一つである。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の測定方法は、摩擦子の接触面を所定方向に20g/cmの張力が付与された測定試料の表面に対して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、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)を用いて測定する。その摩擦係数を摩擦距離(移動距離=2cm)で除した値がMMDである。なお、摩擦子は、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ものとした。
JIS P 8111(1998)の条件下で試料を調湿した後、JIS P 8127(1998)に準じて測定した。
薬剤含有率及び薬剤含有量は、以下の(1)~(4)の試料測定及び計算から算出することができ、表中の値は、試料測定に基づいた値である。なお、薬剤含有率及び薬剤含有量は、保湿薬液の組成及び原紙の物性に基づいて算出してもよい。
JIS P 8111(1998)に規定されている23℃50%R.H.環境下でティシュペーパーを調湿する。ティシュペーパー5組の縦寸法、横寸法をそれぞれ測定し、ティシュペーパーの面積を算出する(なお、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ではない)。次いで、秤量瓶に試料を入れ温度80℃の乾燥条件下で120分間乾燥する。秤量瓶に蓋をしてデシケーター内で放熱させ、ティシュペーパー1組(2枚)の絶乾質量を求める。その絶乾質量と先に測定した面積とから、5組各々の絶乾坪量(1枚当たり)を算出し、その平均値を試料の絶乾坪量(g/m2)とする。
試料約10gを筒型秤量瓶に入れ80℃120分間乾燥させ絶乾した後、秤量瓶に蓋をしてデシケーター内で放熱させ、試料の絶乾質量を求める。試料を詰めた円筒ろ紙をソックスレー抽出器に入れ、平底フラスコにアセトン:エチルアルコール混合溶媒(混合容積比1:1)120~140mLを入れ、湯浴上で抽出液が軽く沸騰を保つ程度に4時間加熱する。加熱後、抽出液をフラスコに集める。フラスコに分留用曲管と冷却器をセットし湯浴上で加熱し溶媒を除去する。さらにそのフラスコを温度105±2℃の恒温乾燥器中に90分間放置して、溶媒を完全に除去する。溶剤除去後のフラスコ質量から恒量したフラスコ質量を引いて、抽出物の質量(B)(g)を求める。次いで、次式によって、薬剤付着率を求める。
薬剤含有量は、次式によって算出する。
薬剤含有率(絶乾)は、JIS P 8111条件下において調湿したティシュペーパーの質量(A)(g)及び、上記(2)で求めた抽出物の質量(B)(g)とから次式によって算出する。薬剤含有率(質量%)=(B)÷(A)×100(質量%)
評価者を30人とし、各試料について、「柔らかさ」、「滑らかさ」、「しっとり感」、「べたつき感」の各官能性を、基準試料との比較で「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」と評価し、各評価者の平均点を算出したものを評価値とした。なお、「総合評価」は、「肌触りが良く、購入意向が大変高い」と感じたものについては「5」、「肌触りが良く、購入意向が高い」と感じたものについては「4」、「肌触りは普通で、購入意向が高いとも低いとも言えない」と感じたものについては「3」、「肌触りに劣り、購入意向が低い」と感じたものについては「2」、「肌触りが非常に劣り、購入意向はほぼない」と感じたものについては「1」と評価したもので、各評価者の平均点を算出したものを評価値とした。
以上の各試験の結果から、薬剤中におけるグリセリンと1,3-プロパンジオールとを合わせた割合、グリセリンと1,3-プロパンジオールの配合割合及び薬剤含有量を本発明の範囲とすることにより、特に「しっとり感」と「滑らかさ」がともに向上し、「しっとり感」を有しつつも、「滑らかさ」を顕著に感じることができるティシュペーパーとなる。
Claims (3)
- 2プライのティシュペーパーであって、
1プライ当たりの坪量が12.9g/m2超16.8g/m2未満であり、
2プライでの紙厚が128μm以上150μm以下であり、
グリセリンと1,3-プロパンジオールとを合わせて83.7質量%以上、含み、かつ、グリセリンと1,3-プロパンジオールとの質量比が1:0.14超1:6.64未満である薬剤を、2.3g/m2超6.1g/m2未満含有する、
ことを特徴とするティシュペーパー。 - 2プライのティシュペーパーであって、
1プライ当たりの坪量が13.5g/m2以上16.1g/m2以下であり、
2プライでの紙厚が128μm以上150μm以下であり、
グリセリンと1,3-プロパンジオールとを合わせて83.7質量%以上、含み、かつ、グリセリンと1,3-プロパンジオールとの質量比が1:0.14超1:6.64未満である薬剤を、2.3g/m2超6.1g/m2未満含有する、
ことを特徴とするティシュペーパー。 - 2プライのCD方向の乾燥引張強度が63cN/25mm超133cN/25mm以下であり、
2プライのCD方向の湿潤引張強度が39cN/25mm超59cN/25mm以下であり、
2プライのCD方向の乾燥引張強度に対する2プライのCD方向の湿潤引張強度の比が、0.30以上である、請求項1又は2記載のティシュペーパー。
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