WO2022070733A1 - ティシュペーパー及びティシュペーパー製品 - Google Patents

ティシュペーパー及びティシュペーパー製品 Download PDF

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Publication number
WO2022070733A1
WO2022070733A1 PCT/JP2021/031969 JP2021031969W WO2022070733A1 WO 2022070733 A1 WO2022070733 A1 WO 2022070733A1 JP 2021031969 W JP2021031969 W JP 2021031969W WO 2022070733 A1 WO2022070733 A1 WO 2022070733A1
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WO
WIPO (PCT)
Prior art keywords
ply
tissue paper
moisturizer
plies
paper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/JP2021/031969
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English (en)
French (fr)
Japanese (ja)
Inventor
貞直 真鍋
良一 越智
裕介 椎木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daio Paper Corp
Original Assignee
Daio Paper Corp
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Filing date
Publication date
Application filed by Daio Paper Corp filed Critical Daio Paper Corp
Priority to EP21870527.5A priority Critical patent/EP4023122A4/en
Priority to US17/764,252 priority patent/US20220380984A1/en
Priority to CN202180005323.8A priority patent/CN114599258A/zh
Publication of WO2022070733A1 publication Critical patent/WO2022070733A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • D21H27/38—Multi-ply at least one of the sheets having a fibrous composition differing from that of other sheets
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0208—Tissues; Wipes; Patches
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/34—Alcohols
    • A61K8/345—Alcohols containing more than one hydroxy group
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • 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
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/002—Tissue paper; Absorbent paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/002—Tissue paper; Absorbent paper
    • D21H27/004—Tissue paper; Absorbent paper characterised by specific parameters

Definitions

  • the present invention relates to tissue paper, and more particularly to tissue paper and tissue paper products coated with a moisturizer.
  • tissue paper Two-pliers are the mainstream for tissue paper, but in recent years, demand for multi-plier and thick papers such as three-pliers and four-pliers is increasing.
  • Such multi-ply tissue paper is often regarded as a product belonging to a high-class type with a high product price, and the tissue paper of such a product group is said to have a "fluffy and bulky feeling" especially corresponding to the number of plies. "Smoothness of the surface” and "softness" are required.
  • tissue paper Various types are commercially available, and one of the fields is a moisturizing tissue containing a water-based moisturizer or a lotion tissue.
  • Traditional moisturizing tissue and lotion tissue are manufactured for people who frequently bite with tissue paper due to hay fever or colds so that their skin does not turn red or hurt even after repeated use, and the quality is soft and smooth. Has been done.
  • the moisturizer is applied only to both outer layer sheets, and the moisturizer is not applied to the intermediate layer sheet.
  • the present invention is to provide a 3-ply or 4-ply or 4 tissue paper having a reduced stickiness on the outer surface while ensuring the necessary softness, and a method for producing the same.
  • tissue paper according to the present invention that solves the above problems is Tissue paper with 3-ply or 4-ply laminated
  • Each ply contains a hygroscopic water-based moisturizer and
  • the content of the water-based moisturizer between the plies is such that the dry moisturizer content of each ply is in the range of 92.0 to 108.0 when the dry moisturizer content of the product is 100. It is characterized by that.
  • tissue paper product of the present invention is A tissue paper product in which 3-ply or 4-ply laminated tissue paper is stored in a storage body.
  • Each ply contains a water-based moisturizer exhibiting hygroscopicity, and the content of the water-based moisturizer between the plies is the dry moisturizer of each ply when the dry moisturizer content of the product is 100.
  • the content is in the range of 92.0 to 108.0, It is characterized by that.
  • Tissue paper on which 3 plies or 4 plies are laminated Since it is 3 plies or 4 plies instead of 2 plies, it gives a "fluffy and bulky feeling".
  • a hygroscopic water-based moisturizer (hereinafter sometimes referred to as "chemical solution”, which is synonymous) and contains a moisturizer.
  • a hygroscopic water-based moisturizer a moisturizer containing a polyol as a main component, particularly a moisturizer containing glycerin as a main component, that is, a moisturizer containing glycerin in an amount of more than 50% by mass, preferably 70% by mass or more of glycerin.
  • Glycerin exhibits hygroscopicity as well as moisturizing properties.
  • Liquid paraffin can be contained to improve surface properties, especially smoothness. Further, if necessary, 1,3-propanediol can be contained in an amount of 6.1% by mass or more and 12.6% by mass or less.
  • a known auxiliary agent may be contained in the tissue paper.
  • auxiliaries include moisturizing aids such as sorbitol, hydrophilic polymer gelling agents to increase the retention of water in tissue paper, surfactants and flexibility improvers, and assist in the development of smoothness.
  • examples thereof include oily components such as the above-mentioned liquid paraffin, emulsifiers, preservatives, defoamers and the like for stabilizing moisturizers and improving coatability.
  • the amount of ingredients such as moisturizing auxiliary ingredients and hydrophilic polymer gelling agents that enhance water retention has an excessive effect on "soft and bulky feeling", “softness” and “smoothness of the surface". To the extent that it does not reach. Specifically, it is preferably 1.0% by mass or less, preferably 0.6% by mass or less, and more preferably 0.5% by mass or less.
  • the basis weight of 1 ply of the tissue paper of the present embodiment is preferably 15.0 to 22.5 g / m 2 , and particularly preferably 15.5 to 20.5 g / m 2 .
  • the basis weight of each layer is within this range, “softness” and “fluffy and bulky feeling” are noticeable. If the basis weight is high, the paper tends to be hard, and if the basis weight is low, the paper tends to be soft. Therefore, it is considered that the basis weight has a large effect on "softness”. Under this basis weight, "3 plies or 4 plies gives a remarkably" fluffy and bulky feeling ".
  • the basis weight is a value measured based on JIS P 8124 (1998).
  • the water-based moisturizer is contained almost evenly in each ply. That is, when the dry moisturizer (chemical solution) content of the product is 100, the dry moisturizer (chemical solution) content of each ply is in the range of 92.0 to 108.0. Desirably, the dry moisturizer (chemical solution) content of the ply is in the range of 95.0 to 104.0.
  • FIG. 4 shows an embodiment of three layers (1R, 2R, 3R)
  • FIG. 5 shows an embodiment of four layers (1R, 2R, 3R, 4R)
  • FIG. 6 shows an embodiment of three layers (1R, 2R
  • the conventional embodiment of the 3R is shown
  • FIG. 7 shows the conventional embodiment of the three layers (1R, 2R, 3R).
  • the coated surface F and the non-coated surface W of the moisturizer are shown. Since there is not a small gradient of the content concentration of the moisturizer in the thickness direction from the coated surface F to the non-coated surface W, the concentration gradient is shown by the gradation.
  • the tissue paper of the embodiment has a water-based moisturizer in the intermediate layer (intermediate ply) and the zuna (2R in FIG. 4, 2R and 3R in FIG. 5). Applies.
  • the intermediate layer (intermediate ply) also contains a water-based moisturizer to make the intermediate layer (intermediate ply) soft, thereby making the entire laminated sheet soft.
  • the amount of the moisturizer contained in the outer layer sheet can be reduced, and the sticky feeling due to the moisturizer on the outer surface of the outer layer sheet (exposed surface of the laminated sheet) can be eliminated or suppressed.
  • This advantage is that when the dry moisturizer (chemical solution) content of the product is 100, the basis weight of each ply and each ply are as long as the dry moisturizer (chemical solution) content of each ply is within the above range. It is expressed regardless of the content of the moisturizer.
  • the moisturizer can be directly applied not only to the outer layer but also to the intermediate layer.
  • the moisturizer to the outer layer sheet behaves so as to permeate and diffuse from the coated surface to the whole with the passage of time.
  • an external pressure such as a calendar process
  • a part of the moisturizer is transferred to the adjacent sheet.
  • the amount of the moisturizer applied is small, the amount of the moisturizer transferred to the adjacent sheet is small.
  • the intermediate layer (intermediate ply) to contain the moisturizer necessary for ensuring the softness
  • more moisturizer than necessary is applied to the outer layer sheet in order to transfer the moisturizer to the intermediate layer and ensure the softness
  • a large amount of the moisturizer remains on the outer surface (exposed surface) of the outer layer sheet.
  • the amount of the moisturizer applied to the outer surface (exposed surface) of the outer layer sheet can be reduced, and the occurrence of stickiness can be eliminated or suppressed.
  • crepe the ply base paper It is common to crepe the ply base paper to give flexibility to the tissue paper. It is desirable to perform crepe processing also in the embodiment.
  • the number of crepes is preferably 38 to 54 / cm.
  • the number of crepes (lines / cm) measured by one-shot 3D draws a line shape in the MD direction, counts the number of peaks and valleys of 1.0 to 2.0 cm in the MD direction, and measures the length in the MD direction. It can be expressed as a value divided by.
  • the shape is measured by one-shot 3D and the height profile on the XY plane is shown on the screen, the height of the tissue paper surface is expressed in color tone.
  • the shape of the crepe in the height direction can be confirmed from the measured cross-sectional curve profile.
  • the crepe has valleys formed in the direction 90 perpendicular to the MD direction
  • the number of mountain valley-shaped mountains of 1.0 to 2.0 cm in the MD direction is counted and divided by the measured MD length.
  • the average value of the measured values of 5 points is used as the value for each sample.
  • the sharpness of the uneven peak is preferably 2.8 to 3.5 (1 / mm) (the larger the value, the sharper the surface is).
  • the moisturizer When the moisturizer is applied to the ply base paper, it is preferable to apply the moisturizer to the surface having small irregularities due to the crepe process. That is, it is desirable to apply a moisturizer to the surface having a small arithmetic mean height Sa in the ply where the surface roughness appears as a difference in the magnitude of the arithmetic average height Sa according to ISO25718.
  • a smooth touch is given by the surface having a small arithmetic average height Sa and the surface having a sufficient amount of the moisturizer. At the same time, it comes to give softness.
  • the outer layer contains a chemical solution
  • the paper is smoothed by the external pressure on the outer surface of the outer layer, and the applied moisturizer is evenly diffused on the surface.
  • the surface becomes smooth, and even more "surface smoothness" is exhibited.
  • the moisturizer-coated tissue paper of the embodiment has an arithmetic mean height Sa of 0.005 to 0.012 mm, particularly 0.006 to 0.008 mm, on the outer surface (particularly the exposed surface of the laminated sheet) under non-pressurization. Is desirable.
  • the arithmetic mean height Sa is within the range, the surface is smooth and shows appropriate unevenness, so that it is excellent in wiping property such as lipstick and foundation.
  • under non-pressurization means that the measurement is performed in a generated state ("kinari").
  • the moisturizer when a moisturizer is applied to a surface with large irregularities due to the crepe processing of the base paper ply, the moisturizer is also hygroscopic, so that the surface is greatly wrinkled due to moisture absorption over time, the surface shrinks, and the surface of the surface shrinks. It impairs smoothness.
  • the arithmetic mean height Sa is defined in ISO25178 and represents the average of the absolute values of the height differences of each point with respect to the average surface of the surface in the defined region. The smaller the value, the smaller the absolute value of the difference in height of each point with respect to the average surface of the surface, indicating that the surface is flat, and the larger the value, the rougher the surface.
  • the measurement surface of the sample taken out from the bundle of tissue paper has a fold mountain side. (The same applies to the arithmetic mean curvature Spc of the mountain peak).
  • the arithmetic mean curvature (Spc) of the peak of the outer surface under non-pressurization is 2.8 to 3.5 (1 / mm).
  • the arithmetic mean curvature of the mountain apex represents the arithmetic mean of the principal curvature of the mountain apex in the definition area. The smaller the value, the more rounded the point of contact with another object, and the larger the value, the sharper the point of contact with another object.
  • the measurement surface is the surface with the mountain side of the fold.
  • the "arithmetic mean height Sa” and the “arithmetic mean curvature (Spc) of the mountain peak” are "one-shot coordinate measuring machine VR-3200 (manufactured by Keyence Co., Ltd.)” (hereinafter, “3D macroscope”. ”) And its equivalent (non-contact 3D measuring device).
  • the “3D microscope” can measure the shape from the fringe projection image of the object projected on the monochrome C-MOS camera by the structured illumination light emitted from the floodlight, and in particular, the obtained fringes.
  • the projected image can be used to measure the height, length, angle, volume, etc. of any part.
  • the software "VR-H2A” and its equivalent software can be used for observing, measuring, and analyzing images obtained by the "3D microscope”.
  • the measurement conditions are a field of view area of 24 mm ⁇ 18 mm and a magnification of 12 times.
  • the specific measurement procedure of the arithmetic mean height Sa and the arithmetic mean curvature (Spc) of the outer surface under non-pressurization is performed as follows. On the measuring table, put the sample ply tissue paper (with a size of about 50 mm in the MD direction x 50 mm in the CD direction) in the state of being generated so that the depth direction is the MD direction with the measuring machine in front. Place it.
  • the test piece used for measurement shall be a flat part of the product.
  • VR-H2A three images of the sample surface, the main image (texture), the main image (height), and the 3D image, are obtained.
  • the "texture" image displayed by selecting "surface roughness” of the software is converted into a "height” image (an image represented by shades of color tones color-coded in the height direction). do.
  • a "height” image an image represented by shades of color tones color-coded in the height direction.
  • Sz maximum height
  • Sa arithmetic mean height
  • Spc arithmetic mean curvature
  • the size of the measurement range is 3.0 mm ⁇ 3.0 mm.
  • the measurement range can be set by selecting "Numerical value designation" in "Add area”.
  • the measurement range should not include the embossed portion, and the measurement range should be set so that the shade of color tone in each measurement range on the screen is close to constant visually.
  • the maximum height (Sz), the arithmetic mean height Sa, and the arithmetic mean curvature (Spc) of the peak are the parameters of the surface roughness defined by ISO25178.
  • the filter is measured under the conditions of Garcian correction, no S-filter, F operation is a two-dimensional curved surface, L-filter 0.8 mm, and termination processing is on.
  • Planar roughness of "maximum height (Sz)", “arithmetic mean roughness (Sa)”, and “arithmetic mean curvature of mountain peak (Spc)” is measured within a range of 3.0 mm square, which is the measurement range.
  • the plane roughness in the range of 3.0 mm square in this image is measured at 5 points in total by changing the position, and the average value of the 5 points is the "maximum height (Sz)" and "average arithmetic roughness” of the measurement sample.
  • (Sa) ”and“ Arithmetic mean curvature (Spc) of the mountain peak ” are measured values.
  • the range of 3.0 mm square which is the measurement range, is located in the central portion where the distortion is small in the visual field area of 24 mm ⁇ 18 mm. It should be noted that the selection of each of the above five measurement ranges and the "maximum height (Sz)", “average arithmetic roughness (Sa)”, and “arithmetic mean curvature (Spc) of the peak may be measured at the same time. , The measurement range Z may be changed for measurement.
  • the content of the moisturizer in each ply is 10.0 to 35.0%. In particular, it is preferably 17.0 to 30.0%. If the content is low, the softness is not sufficient, and if it is high, the exposed surface becomes sticky and the paper strength tends to decrease.
  • the tissue paper has three plies laminated, and the basis weight of one ply is 15.0 to 22.5 g / m 2 , and the thickness of the three plies is 140 to 270 ⁇ m, particularly 176 to 230 ⁇ m.
  • the paper thickness tends to affect "softness” and "softness” in particular.
  • “softness”, “soft and bulky feeling”, and “smoothness of the surface” become remarkable.
  • the basis weight of one ply is 15.0 to 22.5 g / m 2
  • the thickness of the four plies is 180 to 360 ⁇ m, particularly 220 to 320 ⁇ m.
  • the paper thickness is measured using a dial thickness gauge (thickness measuring instrument) "PEACOCK G type" (manufactured by Ozaki Seisakusho) after sufficiently adjusting the humidity of the test piece under the conditions of JIS P 8111 (1998).
  • the value is set. Specifically, make sure that there is no dust, dust, etc. between the plunger and the measuring table, lower the plunger on the measuring table, move the memory of the dial thickness gauge to set the zero point, and then set the zero point. , Raise the plunger, place the test piece on the measuring table, slowly lower the plunger and read the gauge at that time.
  • the load at the time of measuring the paper thickness is about 70 gf.
  • the paper thickness is the average value of the measured values obtained by performing this measurement 10 times at different parts. For the test piece, take a 3-ply product sheet and measure it while avoiding creases and contact embossed parts.
  • the tissue paper of the present embodiment preferably has a drying strength of 220 to 420 cN / 25 mm with 3 plies or 4 plies in the vertical direction.
  • a drying strength in the vertical direction is within this range, “softness”, “fluffy bulkiness” and “smoothness of the surface” become remarkable. In addition, it is in a range of sufficient strength to withstand use.
  • the drying strength at 3 plies in the vertical direction is excessively high, that is, the fibers are densely arranged in the vertical direction and compacted with high pressure, the softness is inferior and the moisturizer is between the fibers.
  • the exposed surface is prone to stickiness as a cause (expected) of not penetrating into.
  • the drying strength in the lateral 3-ply or 4-ply is 60 to 160 cN / 25 mm.
  • “softness”, “soft and bulky feeling”, and “smoothness of the surface” become remarkable.
  • it is in a range of sufficient strength to withstand use.
  • the "lateral dry tensile strength” has an effect on the overall "feeling of the skin” rather than the individual sensuality such as “softness” and “softness”.
  • the good and bad of the tissue paper is evaluated by the comprehensive evaluation standard of "feeling on the skin” after letting the subject freely touch the sample, not the specific evaluation criteria such as “softness” and “softness”. It has been found that there is a certain correlation between the evaluation of this "feeling of the skin” and the "dry strength in the lateral direction”.
  • the tissue paper of the present embodiment preferably has a wet paper force of 50 to 90 cN / 25 mm in the lateral 3-ply or 4-ply.
  • the ratio of the wet tensile strength in the lateral direction to the dry tensile strength in the lateral direction is preferably 0.62 to 0.76. It should be noted that this value is a measured value with 3 plies or 4 plies. Due to such a difference in strength, the user feels "durability (strength / security)" in a usage mode that changes from a dry state to a wet state when chewing a runny nose. Furthermore, the change in the strength of the paper in such a usage mode becomes less noticeable, which affects the feeling of "smoothness" during use.
  • the vertical direction of the paper is also called the MD direction, and is the flow direction at the time of papermaking.
  • the horizontal direction of the paper is also called the CD direction, and is a direction orthogonal to the flow direction (MD direction) at the time of papermaking.
  • the dry (tensile) strength of the tissue paper of the embodiment is a value measured based on JIS P 8113, and is a value measured as follows.
  • the test piece used is cut to a width of 25 mm ( ⁇ 0.5 mm) x a length of about 150 mm in both the vertical and horizontal directions.
  • Tissue paper is measured with multiple plies.
  • As the testing machine a load cell tensile testing machine TG-200N manufactured by Minebea Co., Ltd. and an equivalent machine equivalent thereto are used.
  • the gripping interval is set to 100 mm
  • the tensile speed is set to 100 mm / min.
  • the measurement is performed by tightening both ends of the test piece to the grip of the testing machine, applying a tensile load to the paper piece in the vertical direction, and reading the indicated value (digital value) when the paper breaks.
  • Five sets of samples are prepared in each of the vertical and horizontal directions, and measurements are taken 5 times each, and the average of the measured values is taken as the dry tensile strength in each direction.
  • the sample is prepared according to JIS P 8111 (1998).
  • the wet (tensile) strength of the tissue paper in the embodiment is a value measured according to JIS P 8135 (1998), and is a value measured as follows.
  • the test piece used is cut to a width of 25 mm ( ⁇ 0.5 mm) x a length of about 150 mm in both the vertical and horizontal directions.
  • the tissue paper is measured with multiple plies.
  • As the testing machine a load cell tensile testing machine TG-200N manufactured by Minebea Co., Ltd. and an equivalent machine equivalent thereto are used.
  • the gripping interval is set to 100 mm, and the tensile speed is set to 50 mm / min.
  • test piece As the test piece, a test piece that has been cured in a dryer at 105 ° C. for 10 minutes is used. After tightening both ends of the test piece to the grip of the testing machine, use a flat brush soaked in water to apply water horizontally to the center of the test piece with a width of about 10 mm, and then immediately move it up and down with respect to the piece of paper. The measurement is performed by applying a tensile load to the paper and reading the indicated value (digital value) when the paper breaks. Five sets of samples are prepared in each of the vertical and horizontal directions and measured five times each, and the average of the measured values is taken as the wet tensile strength in each direction.
  • the dry tensile strength and the wet tensile strength can be adjusted by adding a dry paper strength enhancer or a wet paper strength enhancer to the paper material or wet paper.
  • a dry paper strength enhancer starch, polyacrylamide, CMC (carboxymethyl cellulose) or a salt thereof, sodium carboxymethyl cellulose, calcium carboxymethyl cellulose, zinc carboxymethyl cellulose and the like can be used.
  • the wet paper strength enhancer polyamide polyamine epichlorohydrin resin, urea resin, acid colloid / melamine resin, heat-crosslinkable coated PAM and the like can be used.
  • a dry paper strength enhancer is added internally, the amount added to the pulp slurry is about 1.0 kg / pulp t or less.
  • the wet paper strength enhancer is preferably cationic, and the amount added to the pulp slurry is about 5.0 to 20.0 kg / pulp t.
  • the fiber material constituting the tissue paper is pulp fiber, and it is desirable that it is NBKP (coniferous kraft pulp) and LBKP (blightwood kraft pulp) used for tissue paper.
  • NBKP coniferous kraft pulp
  • LBKP blightwood kraft pulp
  • the compression work amount is 1.85 to 2.50 gf / cm / cm 2 , especially 2.18 to 2.35 gf /. cm / cm 2 is desirable, and compression recovery is preferably 46.0 to 54.5%, particularly 48.0 to 53.0%.
  • the tissue paper according to the present embodiment and a product obtained by bundling and packaging the tissue paper can be manufactured by the following manufacturing procedure.
  • a single-layer tissue paper base paper (ply base paper) having a crepe made by a paper making facility is wound up to form a primary raw fabric roll.
  • three (four in the case of four plies) primary raw fabric rolls are set in a laminating facility also called a ply machine, and a single continuous sheet is unwound from each primary raw fabric roll to form three layers (or three layers (or).
  • a secondary raw fabric roll is manufactured by winding it by appropriately slitting it.
  • a laminated bundle is formed in a folding facility or the like, which is also called an interfolder. Then, after cutting the laminated bundle into an appropriate size, the product is packaged in a package, for example, a paper packaging box or a plastic packaging bag to obtain a product related to tissue paper.
  • a series of manufacturing processes for commercializing this tissue paper, or a separate chemical application facility is provided between the processes, and a moisturizer (moisturizing chemical solution) containing glycerin is applied to the tissue paper base paper by external addition.
  • the moisturizing chemical solution can be applied by incorporating a roll transfer device such as a flexo printing machine or a gravure printing machine or a chemical solution coating device such as a spray coating device into the equipment of either a ply machine or an interfolder.
  • a roll transfer device such as a flexo printing machine or a gravure printing machine
  • a chemical solution coating device such as a spray coating device
  • these devices may be installed as a separate facility from the ply machine and the interfolder.
  • the moisturizer is applied to each ply base paper. This form can be appropriately selected.
  • the form shown in FIG. 1 can be used as the application form of the moisturizing chemical solution. That is, the 3-ply base paper is drawn out from the 3-ply base paper roll 6, the moisturizing chemical solution is picked up from the bat 8 by the gravure roll 9, and this is transferred to the metal roll 7A and passed between the metal roll 7B and the other metal rolls 7B facing each other. However, the moisturizer is applied to the exposed surfaces of one of the outer layers and the middle layer, respectively. At the subsequent position, the moisturizing chemical solution is applied to the outer surface of the other second outer layer of the 3-ply base paper sheet in the same manner. The sheet coated with the moisturizing chemical solution is wound up as a raw fabric roll 10. Although the moisturizing chemical solution may be applied by the flexo method, it has been confirmed that the gravure application method has a higher effect of smoothing the surface than the flexo method.
  • a first pickup for picking up the moisturizer and a second transfer roll for receiving the moisturizer are paired with each other to pick up the moisturizer.
  • the first coating unit and the second coating unit which are paired with the pickup roll and the second transfer roll that receives the pickup roll, are arranged so as to face each other.
  • the first ply base paper as one outer layer and the second ply base paper as the other inner layer are supplied between the opposite first transfer roll and the second transfer roll in a laminated state, and each is a first ply.
  • a moisturizer is applied to the first transfer roll and the second transfer roll on the outer surface of the base paper and the outer surface of the second ply base paper.
  • a third ply base paper is provided with a third coating unit that pairs a third pickup roll that picks up the moisturizer and a third transfer roll that receives the moisturizer, and serves as an outer layer on the opposite side.
  • the moisturizer is transferred to the outer surface of the surface by a third transfer roll and applied.
  • the third transfer roll faces an appropriate backup roll, and the first transfer roll or the second transfer roll is used as a backup roll to apply a moisturizer to the outer surface of the third ply base paper. 3 It can also be transferred by a transfer roll and applied.
  • the amount of pickup by each pickup roll can be adjusted, for example, by the degree of scraping by the blade, and also by the difference in rotation speed between the pickup roll formed by the anilox roll and the transfer roll.
  • the amount of coating on the target surface by the transfer roll can be adjusted.
  • a pair of laminated raw fabric rolls 10A and 10B of laminated sheets coated with a moisturizing chemical solution are folded and commercialized by, for example, a rotary interholder 11.
  • the interfolder for folding may be a facility for folding with a folded plate, which is also called a multi-stand type, a stand type, or a folded plate type, or a pair of folding rolls also called a rotary type for folding. It may be a facility to perform. In the embodiment, it is desirable that it is a rotary type interfolder. In the case of a tissue paper product with a multi-ply structure of 3 plies or more, the number of layers is large and each layer is likely to shift, but in the rotary type interfolder, the tension applied to the continuous sheet is weaker than other equipment. Therefore, it is easy for each layer to be less likely to shift and the folding quality to be good. Therefore, the "fluffy feeling" is less likely to decrease, especially during processing.
  • calendar processing it is desirable to perform calendar processing on the laminated sheet.
  • calendar processing By performing calendar processing on the laminated sheet, it becomes easy to cause a difference in paper thickness between the outer layer and the middle layer.
  • the first calendar processing step is performed before the moisturizing chemical solution is applied and the second calendar processing process is performed after the moisturizing chemical solution is applied, the "soft and bulky feeling” is felt and the "softness” is felt. It is easy to make a tissue paper that makes you feel "smoothness” and “smoothness”.
  • FIG. 3 shows an example of the folded form of the laminated sheet.
  • This folding form example is known, and by laminating in a form in which one side of the preceding laminated sheet S1 and one side of the succeeding laminated sheet S3 are inserted into the valley fold portion of the laminated sheet S2. , Laminated sheets can be sequentially taken out from the packaged body (paper packaging box, plastic packaging bag, etc.) by a pop-up method.
  • the "arithmetic mean roughness Sa" of the surface measured by One Shot 3D (manufactured by KEYENCE Co., Ltd.), and the “compression work” and “compression recovery” measured by KES-G5 (manufactured by Kato Tech Co., Ltd.) are The reason why it is suitable for "tissue off” can be roughly considered as follows.
  • a small value of "arithmetic mean roughness Sa” gives a smooth surface.
  • a large value of "compression work” gives good softness because the stage where compression starts is fast and long.
  • a small value of "compression recovery” means that it is difficult to return to the original state once it is pushed in, which improves the controllability of pressure and contributes to making it easier to control the amount of force to wipe off lipstick and foundation. ..
  • the tissue paper of the embodiment and the sample related to the conventional tissue paper were prepared, and the following sensory test was performed as an evaluation item for each item in the sensory test column.
  • the physical property values, composition values, etc. 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 for 3 plies and Tables 3 and 4 for 4 plies.
  • the measurement was performed by tightening both ends of the test piece that had been cured for 10 minutes in a dryer at 105 ° C to the grip of the tester, and then using a flat brush soaked in water, about 10 mm in the center of the test piece. Water was applied horizontally in the width, and then a tensile load was immediately applied to the piece of paper in the vertical direction, and the indicated value (digital value) when the paper broke was read. The tensile speed was 50 mm / min. Five sets of samples were prepared in each of the vertical and horizontal directions and measured five times each, and the average of the measured values was taken as the wet tensile strength in each direction.
  • Softness The measurement was performed according to the handle ometer method according to the JIS L 1096 E method. However, the test piece had a size of 100 mm ⁇ 100 mm, and the clearance was 5 mm. It was measured 5 times in each of the vertical direction and the horizontal direction with 1 ply, and the average value of all 10 times was expressed in units of cN / 100 mm. Softness is one of the indicators of softness. Measure with 1 ply. If it is adhered by contact embossing, peel it off carefully and measure while avoiding the contact embossed part in the center of the test piece.
  • the friction element shall have 20 piano wires P having a diameter of 0.5 mm adjacent to each other and having a contact surface formed so as to have a length and a width of 10 mm. It is assumed that a unit bulging portion having a tip formed by 20 piano wires P (radius of curvature 0.25 mm) is formed on the contact surface. It should be noted that the measurement of MMD should not include the contact embossed portion and the wrinkled portion in advance.
  • the measurement sample is the average value measured by collecting one arbitrary odd-numbered set from each of the three locations of the upper part, the central part, and the lower part of the bundle of laminated sheets. From the valley side of the three-layer (three-ply) sheet, the sheets are the first layer (outer layer), the second layer (middle layer), and the third layer (outer layer).
  • Note 2 in the table is the value obtained by the plane roughness measurement measured by one-shot 3D.
  • Comparative Examples 1 to 4 are commercial products in China.
  • the reference example is a prototype by the applicant.
  • test piece A Places the test piece A with the A side facing up and the test piece B with the B side facing up for each sheet on a bowl of a medicine spoon (about 20 cm in length).
  • the test piece A and the test piece B are placed in a pan at the same time and gently floated on the surface of the water.
  • (6) After 30 seconds, visually (photograph) the state of the water film on the test piece and the state of light reflection are observed.
  • the surface (test piece) on the surface of the test piece in which water is clearly reflected was designated as the non-coated surface (notation "NCT").
  • the opposite surface (test piece) is referred to as a coated surface (notation "CT”).
  • Judgment is made visually (photograph), and if there is no clear difference, both sides are indicated by "-”.
  • the "chemical solution content” is contained in 10.0 to 35.0% by mass in each sheet conditioned at 23 ° C. and 50% RH in the standard state of JIS P8111.
  • each sheet of the chemical-coated multi-layered tissue paper was peeled off, the weight (a) was measured in the standard state of JIS P 8111, and the ratio of ethyl alcohol: acetone was set to 50:50 with a Soxhlet extractor. Put the test piece in the solvent and keep it in a lightly boiled state for about 3 hours to apply the chemical solution. Dissolve the chemical solution applied to the multi-layer sanitary tissue paper. The test piece is taken out, dried at 60 ° C.
  • the "chemical solution content (%)" is calculated by ⁇ (a)-(b) ⁇ ⁇ (a) ⁇ 100. It means the mass ratio of the dried chemical solution contained in the product.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Epidemiology (AREA)
  • Birds (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Dermatology (AREA)
  • Emergency Medicine (AREA)
  • Sanitary Thin Papers (AREA)
PCT/JP2021/031969 2020-09-30 2021-08-31 ティシュペーパー及びティシュペーパー製品 Ceased WO2022070733A1 (ja)

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EP21870527.5A EP4023122A4 (en) 2020-09-30 2021-08-31 TISSUE PAPER AND TISSUE PAPER PRODUCTS
US17/764,252 US20220380984A1 (en) 2020-09-30 2021-08-31 Tissue paper and tissue paper product
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JP2007260161A (ja) * 2006-03-28 2007-10-11 Daio Paper Corp 家庭用衛生薄葉紙の製造方法及びその製造設備
JP2015016355A (ja) * 2014-09-22 2015-01-29 大王製紙株式会社 ティシュペーパー製品の製造方法
JP2018171254A (ja) 2017-03-31 2018-11-08 大王製紙株式会社 ティシュペーパー及びティシュペーパー製品の製造方法
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US20220380984A1 (en) 2022-12-01
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