WO2022075267A1 - Procédé de fabrication de papier de soie et procédé de fabrication d'un produit en papier de soie - Google Patents

Procédé de fabrication de papier de soie et procédé de fabrication d'un produit en papier de soie Download PDF

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Publication number
WO2022075267A1
WO2022075267A1 PCT/JP2021/036648 JP2021036648W WO2022075267A1 WO 2022075267 A1 WO2022075267 A1 WO 2022075267A1 JP 2021036648 W JP2021036648 W JP 2021036648W WO 2022075267 A1 WO2022075267 A1 WO 2022075267A1
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Prior art keywords
ply
moisturizer
tissue paper
sheet
paper
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PCT/JP2021/036648
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English (en)
Japanese (ja)
Inventor
貞直 真鍋
良一 越智
裕介 椎木
Original Assignee
大王製紙株式会社
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Application filed by 大王製紙株式会社 filed Critical 大王製紙株式会社
Priority to EP21877566.6A priority Critical patent/EP4201278A1/fr
Priority to US18/248,047 priority patent/US20230366156A1/en
Priority to CN202180064907.2A priority patent/CN116234484A/zh
Publication of WO2022075267A1 publication Critical patent/WO2022075267A1/fr

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    • 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
    • D21H27/32—Multi-ply with materials applied between the sheets
    • 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
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/22—Addition to the formed paper
    • D21H23/50—Spraying or projecting
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • 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
    • D21H27/005—Tissue paper; Absorbent paper characterised by specific parameters relating to physical or mechanical properties, e.g. tensile strength, stretch, softness

Definitions

  • the present invention relates to a method for producing tissue paper and a method for producing tissue paper products.
  • 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 method for producing 3-ply or 4-ply tissue paper and a method for producing tissue paper products in which the stickiness of the outer surface is reduced while ensuring the necessary softness.
  • the method for producing tissue paper according to the present invention is In manufacturing tissue paper consisting of a laminated sheet in which 3-ply or 4-ply is laminated, Each ply contains a hygroscopic water-based moisturizer and Each ply has a difference in arithmetic mean height Sa according to ISO25718 between both sides thereof. Applying the moisturizer to each of the plies, Applying the moisturizer to the outer surface in a state where the outer surface of each ply located on the outer side of the laminated sheet is a surface having a small arithmetic mean height Sa. Folding the laminated sheet after the application of the moisturizer to each ply is completed. It is characterized by including.
  • tissue paper products is as follows.
  • a method for manufacturing a tissue paper product in which tissue paper made of a laminated sheet in which 3-ply or 4-ply is laminated is stored in a storage body.
  • Each ply contains a hygroscopic water-based moisturizer and Each ply has a difference in arithmetic mean height Sa according to ISO25718 between both sides thereof.
  • Applying the moisturizer to each of the plies by a flexographic transfer printing method Applying the moisturizer to the outer surface in a state where the outer surface of each ply located on the outer side of the laminated sheet is a surface having a small arithmetic mean height Sa.
  • Folding the laminated sheet after the application of the moisturizer to each ply is completed. After that, it should be stored in the storage body in a folded state. It is characterized by including.
  • the present invention it is possible to provide a method for producing 3-ply or 4-ply tissue paper and a method for producing tissue paper products in which the stickiness of the outer surface is reduced while ensuring the necessary softness.
  • tissue paper in which 3-ply or 4-ply is laminated will be described. Since it is 3 plies or 4 plies instead of 2 plies, it gives a "fluffy and bulky feeling".
  • FIG. 1 shows an embodiment of three layers (1R, 2R, 3R), and FIG. 2 shows an embodiment of four layers (1R, 2R, 3R, 4R).
  • FIG. 3 shows an embodiment of the conventional three layers (1R, 2R, 3R), and
  • FIG. 4 shows an embodiment of the conventional four layers (1R, 2R, 3R, 4R).
  • the coated surface F and the non-applied surface W of the moisturizer (hereinafter, also referred to as “chemical solution” and have the same meaning) 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.
  • Each ply has a hygroscopic water-based moisturizer applied 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. Can be used.
  • 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”. If it is 3 plies or 4 plies under this basis weight, it 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 moisturizer (chemical solution) content in the drying standard of the product is 100, the moisturizer (chemical solution) content in the drying standard of each ply is in the range of 92.0 to 108.0. Desirably, the moisturizer (chemical solution) content of each ply in the drying standard is in the range of 95.0 to 104.0.
  • the advantage of this configuration is that the intermediate layer (intermediate ply) becomes softer by including the water-based moisturizer in the intermediate layer (intermediate ply), that is, (2R in FIG. 1, 2R and 3R in FIG. 2). Therefore, the entire laminated sheet becomes soft. As a result, 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 moisturizer (chemical solution) content in the drying standard of the product is 100, each ply is as long as the moisturizer (chemical solution) content in the drying standard of each ply is within the above range. It is expressed regardless of the basis weight of the ply and the content of the moisturizer in each ply.
  • 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 90 degrees 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 laminated sheet be calendared after the moisturizer is applied.
  • the paper is smoothed by the external pressure on the outer surface of the outer layer, the applied moisturizer diffuses uniformly on the surface, the surface becomes smooth, and further "surface smoothness" is exhibited.
  • the moisturizer-coated tissue paper has an arithmetic average height Sa of 0.005 to 0.012 mm, especially 0.006 to 0.008 mm, on the outer surface (particularly the exposed surface of the laminated sheet) under non-pressurization. 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 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 a fringe projection image of an object projected on a 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-filler, F-operation is a two-dimensional curved surface, L-filter is 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% by mass. In particular, it is desirable that the mass is 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” affects the overall "feeling of the skin” sensuality, not the individual sensuality such as “softness” and “fluffy feeling”.
  • 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 as it is. 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, with 3 plies and 4 sets totaling 12 plies, or 4 plies and 3 sets total 12 plies. / Cm 2 is desirable. Further, the compression recovery is preferably 46.0 to 54.5%, particularly 48.0 to 53.0%.
  • tissue paper according to the present embodiment and the tissue paper product in which the tissue paper is bundled and stored in the package can be manufactured by the following manufacturing procedure.
  • the primary raw roll JR (also referred to as jumbo roll) is manufactured as follows by the papermaking equipment example X2 shown in FIG.
  • a paper material prepared in advance by adding an appropriate chemical to the pulp slurry from the head box 31 is supplied onto the wire 32w of the wire part 32 to form a wet paper W (forming step), and then this wet paper W is pressed. After being transferred to the felt 34 of the part 33, it is sandwiched and dehydrated by a pair of dehydration rolls 34 and 35 (dehydration step).
  • the dehydrated wet paper is adhered to the surface of the Yankee dryer 36 and dried, and then scraped off by a doctor blade 37 to obtain a dry base paper S1 (primary continuous sheet described later) having a crepe (crepe processing / drying step). ..
  • the dried base paper S1 is wound by the winding means 38 having the winding drum 39 so that the back surface of the dried base paper S1 faces the shaft side of the primary raw fabric roll JR (so as to be the winding inner surface). Take and use as the primary raw fabric roll JR (primary original fabric winding process).
  • This primary raw roll JR has a diameter of 1000 to 5000 mm, a length (width) of 1500 to 9200 mm, and a winding length of 5000 to 80000 m, although it differs depending on the performance of the papermaking equipment X2.
  • a calendar process (not shown) may be provided on the dried base paper S1 scraped off by the doctor blade 37 before the primary raw fabric winding process to smooth the front and back surfaces.
  • the back surface of the dry base paper S1 means the surface opposite to the surface in contact with the cylinder of the Yankee dryer 36.
  • the surface that is in contact with the mirror-surfaced Yankee dryer is generally smoother and has better surface properties.
  • at least the outer surface (exposed surface) of the outer layer of the laminated sheet is the surface (smooth and excellent in surface properties) that was in contact with the mirror-surfaced Yankee dryer, and this smooth and excellent surface surface is used.
  • apply a moisturizer As a result, the outer surface (exposed surface) of the outer layer can be a surface having a small arithmetic mean height Sa according to ISO25718. As a result, the laminated sheet gives the consumer a smooth and soft feel.
  • the primary continuous sheet S1 (ply base paper) constituting the primary raw fabric roll JR has a basis weight of 10 to 25 g / m 2 , preferably 12 to 20 g / m 2 according to JIS P 8124. It is preferably 13 to 16 g / m 2 .
  • the basis weight is less than 10 g / m 2 , it is preferable in terms of the softness of the tissue paper 1, but it becomes impossible to secure an appropriate strength.
  • the basis weight exceeds 25 g / m 2 , the tissue paper 1 becomes too hard and the texture deteriorates.
  • the primary continuous sheet S1 has a crepe rate of 10 to 30%, preferably 12 to 25%, and more preferably 13 to 20%.
  • the crepe ratio is less than 10%, the tissue paper 1 is easy to break during the subsequent processing and has little elongation and is not stiff.
  • the crepe ratio exceeds 30%, it is difficult to control the tension of the sheet during processing and it becomes easy to break the paper, and after manufacturing, the moisture absorption of the moisturizer also causes wrinkles to occur and the tissue paper 1 looks unattractive. It becomes easy to become.
  • the moisturizer is applied to each of the single-layer continuous sheets, or the moisturizer is applied from both sides of the two layers after laminating the single-layer continuous sheets on the other layers.
  • 4-ply apply a moisturizer to each of the single-layer continuous sheets, or apply the moisturizer from both sides of the two layers after stacking the single-layer continuous sheets on the two layers. After superimposing the single-layer continuous sheet of No. 1 on two layers, the moisturizer can be applied from both sides of the two layers.
  • a soft calendar is a calendar using a roll coated with an elastic material such as urethane rubber, and a chilled calendar is a calendar made of a metal roll.
  • the number of calendar sections can be changed as appropriate. If multiple installations are made, there is an advantage that smoothing can be sufficiently performed even if the processing speed is high, while if one is installed, it has an advantage that it can be installed even if the space is narrow. It is preferable that papermaking is performed with the calendar type, nip line pressure, nip number, etc. in the calendar processing as control factors, and these control factors are appropriately changed depending on the quality of the desired tissue paper, that is, the paper thickness and surface properties.
  • embossing can be performed in order to integrate the laminated sheets and to impart design.
  • a folding step is preferably provided in the moisturizer application step or in succession to the subsequent calendar processing step.
  • the obtained laminated sheets are sequentially applied to the valley-folded portion of the laminated sheet S2 as shown in FIG. 17 in a folding facility or the like, which is also referred to as a known rotary interfolder (not shown). Then, one side of the preceding laminated sheet S1 and one side of the succeeding laminated sheet S3 are folded and laminated as a bundle.
  • the bundle of laminated sheets is cut into short bundles by a predetermined length, and the bundle of short laminated sheets is stored in a package (paper packaging box, plastic packaging bag, etc.) contained therein, and is used from the package when used.
  • the laminated sheets can be sequentially taken out from the package by a pop-up method.
  • the moisturizer can be applied by a flexographic printing machine, a roll transfer device such as a gravure printing machine, a spray applying device, or the like.
  • a flexographic printing method or spray application is particularly preferable.
  • the flexographic printing method can be adopted. If the chemical solution is applied by the flexographic printing method, the printing plate roll (transfer roll) is made of resin, and even if the processing speed is high, it can cope with the unevenness of the crepe paper and the coating amount can be stabilized.
  • the number of lines of the roll, the cell capacity, the number of lines of the flexographic printing plate roll, and the apex area ratio there is an advantage that the viscosity of a wide range of chemicals can be easily accommodated and the coating amount can be stabilized.
  • the chemical solution application in the chemical solution application step is particularly preferably a flexographic printing method using a doctor chamber.
  • the doctor chamber method applies the chemical solution directly to the surface of the anilox roll (concave roll for transfer) to form a film, and has the characteristic that paper powder and air do not easily get mixed in the chemical solution and the physical properties of the chemical solution are easy to stabilize. Moreover, since the chemical solution transferred from the anilox roll is uniform, it can be suitably applied even in the case of low-volume application.
  • a flexographic printing machine is used as the chemical solution applying means 90 in the chemical solution application step.
  • the flexographic printing plate roll is made of silicon rubber as its material.
  • the number of lines of the flexographic printing plate roll is 10 to 60 lines, preferably 15 to 40 lines, and particularly preferably 20 to 35 lines. If the number of lines is less than 10, coating unevenness will occur frequently, while if the number of lines exceeds 60, paper dust is likely to be clogged.
  • the number of anilox rolls is 10 to 300, preferably 25 to 200, and particularly preferably 50 to 100. If the number of lines is less than 10, coating unevenness will occur frequently, while if the number of lines exceeds 300, paper dust is likely to be clogged.
  • the cell capacity of the anilox roll is 10 to 100 cc, preferably 15 to 70 cc, and particularly preferably 30 to 60 cc. If the cell capacity is less than 10 cc, the desired coating amount cannot be obtained, while if the cell capacity exceeds 100 cc, the amount of the chemical solution scattered increases.
  • the chemical solution can be stably applied in the chemical solution application process, and the number of lines of the printing plate roll and the anilock roll related to the operational stability is important.
  • a method for transferring the chemical solution stored in the storage tank to the anilox roll an appropriate method such as a doctor chamber type or a touch roll type is adopted. An example of a form in which each of these flexographic printing methods is adopted will be described in detail.
  • the doctor chamber 92 containing the chemical solution is arranged so as to face the rotatable anilox roll 93, and the chemical solution is delivered from the doctor chamber 92 to the anilox roll 93B. It has become. Further, a printing plate (transfer) roll 94 that is in contact with the anilox roll 93 and is in contact with the sheet S1 or S2 is rotatably installed, and the chemical solution is transferred from the anilox roll 93 to the printing plate roll 94. ..
  • the chemical solution is applied from the printing plate roll 95 to the laminated continuous sheet while applying pressure between the printing plate roll 94 and the elastic roll 95 facing the sheet S1 or S2.
  • the printing plate (transfer) rolls 94 are opposed to each other and pressure is applied between them, and the layers are continuously laminated from the printing plate roll 95. It is also possible to apply a chemical solution to the sheet.
  • FIG. 8 shows a three-ply moisturizer application form.
  • the sheet S1 is supplied to a coating apparatus having three flexographic printing machines 90.
  • a chemical solution is applied to each outer surface of the two-layer sheet S2.
  • the chemical solution is also applied to the outer surface of the single-layer sheet S1.
  • the two-layer sheet S2 and the single-layer sheet S1 are merged at the merging portion 50 to form a three-layer laminated sheet S3. After that, as described above, it is guided to the interholder through calendar processing and embossing processing.
  • the moisturizer chemical solution
  • the outer surface of each ply located on the outer side of the laminated sheet S3 is a surface having a small arithmetic mean height Sa according to the present invention.
  • the arrangement of the sheets may be taken into consideration, and a three-layer laminated sheet as shown in FIG. 1 can be obtained.
  • FIG. 9 shows a three-ply moisturizer application form, in which the single-layer sheet unwound from the three primary raw fabric rolls joins the three-layer sheet in the middle, and in the separation portion 51, the two-layer sheet S2 , Is separated from the single-layer sheet S1 and supplied to a coating apparatus having three flexographic printing machines 90.
  • a chemical solution is applied to each outer surface of the two-layer sheet S2. After that, it merges with the single-layer sheet S1 at the merging portion 50 to form a three-layer sheet, and then the chemical solution is also applied to the outer surface of the single-layer sheet S1 by another flexographic printing machine 90 to form the three-layer laminated sheet S3. Will be done.
  • FIG. 10 shows a 4-ply moisturizer application form, in which two single-layer sheets unwound from the four primary raw fabric rolls merge as a two-layer sheet in the middle and are outside each of the two-layer sheets S2. A chemical solution is applied to the side surface. Similarly, the other two single-layer sheets merge as a two-layer sheet in the middle, and the chemical solution is applied to each outer surface of the two-layer sheet S2. After that, the two-layer sheets S2 merge with each other at the merging portion 50 to form a four-layer laminated sheet S4.
  • ⁇ Second moisturizer application form> A sheet coated with a water-based moisturizer (chemical solution) containing lyserine as a main component, which exhibits hygroscopicity, tends to stretch and decrease in strength.
  • this coating is performed at a particularly high speed, in the first moisturizer coating mode described above, there is a so-called free-run portion in which the sheet is not constrained by anything between the coating positions.
  • the sheet coated with the water-based moisturizer (chemical solution) may be stretched, its strength may be lowered, and the paper may be cut off.
  • the second moisturizer application form that is, at least each sheet is applied in contact with a roll traveling at the same speed as the sheet in the process from each chemical solution application position to the 3-ply stacking position. It is desirable to have a form.
  • FIG. 11 shows a third-ply second moisturizer application form example, and each flexographic printing machine 90 is not provided with an elastic roll 95 as in the first moisturizer application form example. Instead, the printing plate (transfer) roll 94 of the first flexo printing machine 90A and the printing plate (transfer) roll 94 of the second flexo printing machine 90B are configured to nip the sheet, and the second flexo printing machine 90B is used. The printing plate (transfer) roll 94 and the printing plate (transfer) roll 94 of the third flexographic printing press 90C are configured to nip the sheet.
  • the two-layer sheet S2 is coated with the chemical solution from both sides by the first flexo printing machine 90A and the second flexo printing machine 90B, and then the chemical solution is applied to the outer surface of the single-layer sheet S1 by the third flexo printing machine 90C. ..
  • FIG. 12 shows an example of a 4-ply second moisturizing agent application form.
  • the printing plate (transfer) roll 94 of the first flexo printing machine 90A and the printing plate (transfer) of the second flexo printing machine 90B The sheet is configured to be niped by the transfer) roll 94, and the sheet is nipped by the printing plate (transfer) roll 94 of the second flexo printing machine 90B and the printing plate (transfer) roll 94 of the third flexo printing machine 90C.
  • the sheet is niped by the printing plate (transfer) roll 94 of the third flexo printing machine 90C and the printing plate (transfer) roll 94 of the fourth flexo printing machine 90D.
  • the two-layer sheet S2 is coated with the chemical solution from both sides by the first flexo printing machine 90A and the second flexo printing machine 90B, while the other two-layer sheet S2 is coated with the fourth flexo printing machine 90D and the second from both sides.
  • the chemical solution is applied by the 3 flexo printing machine 90C and merges to form 4 layers of S4.
  • FIG. 13 shows an example of a 4-ply second moisturizing agent application form.
  • the printing plate (transfer) roll 94 of the first flexo printing machine 90A and the printing plate (transfer) of the second flexo printing machine 90B The sheet is configured to be niped with the transfer) roll 94; the sheet is nipped with the printing plate (transfer) roll 94 of the second flexo printing machine 90B and the printing plate (transfer) roll 94 of the fourth flexo printing machine 90D. It is configured to be squeezed; the printing plate (transfer) roll 94 of the second flexo printing machine 90B and the printing plate (transfer) roll 94 of the third flexo printing machine 90C are configured to nip the sheet.
  • the chemical solution is applied to both sides of the two-layer sheet S2, the single-layer sheet S1 to be the intermediate sheet, and the single-layer sheet S1 to be the outer layer sheet, respectively.
  • a nozzle-type spraying method, a rotor dampening spraying method, or the like can be adopted for spray application.
  • the types of spraying nozzles in the nozzle-type spraying method include an empty conical nozzle that sprays in a ring shape, a full-conical nozzle that sprays in a circular shape, a full-angle cone type that sprays in a square shape, a full-square nozzle, and a fan-shaped nozzle.
  • the concentration and viscosity of the liquid can be appropriately selected and used.
  • the method of atomizing in the nozzle type spraying device two types of methods, one-fluid method and two-fluid method, can be selected and used.
  • the one-fluid spray method applies pressure directly to the sprayed chemical solution using compressed air to inject mist droplets from the nozzle, or injects air into the nozzle through a minute hole made in the side surface of the nozzle near the nozzle. It is a method of sucking and spraying mist droplets.
  • the two-fluid spray method is mixed with a liquid that sprays compressed air inside the nozzle, an internal mixed type that atomizes, mixed with a liquid that sprays compressed air outside the nozzle, an external mixed type that atomizes, and atomized. Examples thereof include a collision type method in which the atomized droplet particles are made to collide with each other to further homogenize and atomize the atomized droplet particles.
  • the liquid to be sprayed is sent out on a disk rotating at high speed, and the liquid is atomized by the centrifugal force of the disk, and the fog particle size is controlled by changing the rotation speed of the disk. Then, the amount of spray liquid (applied amount) is controlled by changing the amount of liquid sent onto the disk. It is a thing.
  • the rotor dampening coating device can uniformly apply a small amount of spray liquid to the surface of the pigment-coated paper while suppressing the scattering of mist droplets, and it is easy to adjust the spray speed and mist particle size. There are certain advantages.
  • FIG. 14 is an example of the rotor dampening spray device 100.
  • a rotary rotor 100A is provided in a cover storage chamber (not shown) provided as needed, and a chemical solution is sprayed onto the laminated continuous sheet from the spout 100B of the rotary rotor.
  • a bundle of tissue paper folded and laminated by an inter-holder for example, a rotary inter-holder, is housed in a package, for example, a paper packaging box or a film container, according to a conventional method.
  • 18 and 19 show the tissue paper product X1.
  • a bundle 10 of tissue paper in which a plurality of laminated tissue papers 1 are folded and laminated is stored in a storage box having an outlet or an outlet forming portion formed on the upper surface 20U, and the tissue paper is stored from the outlet when used. When one of the sheets 1 is taken out, a part of one of the lower layers laminated adjacent to each other is exposed from the take-out port.
  • the storage box in which the bundle 10 of tissue paper 1 is stored is a straight hexahedron-shaped box body also called a carton box.
  • This storage box has the appearance of a product, and includes a paper box 20 having an annular perforation line 25 which is an outlet forming portion on the upper surface 20U, and a resin film 22 which covers the area surrounded by the perforation line 25 from the inside of the paper box.
  • the tissue paper 1 stored as a bundle in the storage box is taken out one by one from the outlet through the slit 24.
  • the slit 24 supports a part of the tissue paper exposed from the take-out port and prevents the tissue paper from falling into the carton box.
  • the bundle 10 of the tissue paper 1 is formed by folding and laminating the tissue paper 1. More specifically, as can be seen from FIG. 17, the rectangular tissue paper 1 is substantially folded in half so that the edges of the folded pieces are located on the inner surface of the folded tissue paper adjacent to the top and bottom. , They are stacked while overlapping alternately. It should be noted that, here, substantially means that the edge portion formed in the manufacturing process is allowed to be slightly folded back.
  • the bundle 10 of the tissue paper 1 having this laminated structure when one folded piece located at the highest position is pulled upward, the other adjacent folded piece immediately below the folded piece is dragged upward by friction and lifted. Be done. Then, the bundle 10 of the tissue paper 1 having such a structure is stored so that the uppermost surface thereof faces the upper surface of the storage box having the outlet or the like on the upper surface 20U described above, and the first one from the outlet, particularly the slit 24. When the sheet (the one located on the uppermost surface) is pulled out, a part of the other sheet located immediately below the sheet is exposed.
  • the number of laminated tissue papers 1 in the present invention is not limited, but if a general number of laminated sheets of this type of product is shown as an example, it is 120 to 240 sheets.
  • 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, in addition to the above-mentioned rotary interholder, and is also called a rotary type. It may be a facility that folds with a pair of folding rolls.
  • rotary interfolders are preferably employed.
  • 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 process is performed before the moisturizer is applied and the second calendar processing process is performed after the moisturizer is applied, the "softness” is felt while the “soft and bulky feeling” is felt. It is easy to make tissue paper that makes you feel "smoothness".
  • 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.
  • 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 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 of the test piece on which water is clearly reflected (test piece) is referred to as the chemical solution non-coated surface "NCT”, and the opposite surface (test piece) is referred to as the chemical solution coated surface "CT”.
  • CCT chemical solution non-coated surface
  • CT chemical solution coated surface
  • B surface the non-chemical solution coated surface
  • the "chemical solution content” is the standard state of JIS P8111, 23 ° C., 50% R.D. It is contained in 10.0 to 35.0% by mass in each sheet whose humidity is controlled by H.
  • 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. until it reaches a comparative weight, and the weight (b) is measured.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sanitary Thin Papers (AREA)
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Abstract

[Problème] La présente invention a pour objet de mettre en œuvre un procédé de fabrication de papier de soie à trois ou quatre épaisseurs dans lequel la consistance collante d'une surface extérieure est réduite tout en maintenant la douceur requise. [Solution] La présente invention concerne la fabrication de papier de soie formé à partir d'une feuille stratifiée dans laquelle trois ou quatre épaisseurs sont stratifiées, et est telle que : chaque épaisseur contient un humectant à base d'eau présentant des propriétés hygroscopiques, et dans chaque épaisseur, il existe une différence d'amplitude de hauteur moyenne arithmétique Sa selon ISO 25718 mutuellement entre les deux surfaces de l'épaisseur ; et la présente invention comprend les étapes consistant à appliquer l'humectant sur chacune des épaisseurs, à appliquer l'humectant sur la surface côté extérieur de chaque épaisseur positionnée sur les côtés extérieurs de la feuille stratifiée dans un état dans lequel la surface côté extérieur est formée comme ayant une petite hauteur moyenne arithmétique Sa, à plier la feuille stratifiée une fois que l'application de l'humectant sur chaque épaisseur est réalisée, puis à loger la feuille stratifiée dans un état plié à l'intérieur du corps de réception.
PCT/JP2021/036648 2020-10-06 2021-10-04 Procédé de fabrication de papier de soie et procédé de fabrication d'un produit en papier de soie WO2022075267A1 (fr)

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EP21877566.6A EP4201278A1 (fr) 2020-10-06 2021-10-04 Procédé de fabrication de papier de soie et procédé de fabrication d'un produit en papier de soie
US18/248,047 US20230366156A1 (en) 2020-10-06 2021-10-04 Method for manufacturing tissue paper and method for manufacturing tissue paper product
CN202180064907.2A CN116234484A (zh) 2020-10-06 2021-10-04 纸巾的制造方法和纸巾制品的制造方法

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US20220049426A1 (en) * 2018-11-30 2022-02-17 Daio Paper Corporation Tissue paper

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JP5496590B2 (ja) * 2009-09-30 2014-05-21 大王製紙株式会社 衛生用薄葉紙及び衛生用薄葉紙の製造方法
WO2017168931A1 (fr) * 2016-03-31 2017-10-05 大王製紙株式会社 Procédé de fabrication de papier mince
JP6393997B2 (ja) * 2014-02-07 2018-09-26 王子ホールディングス株式会社 衛生薄葉紙製品の製造方法
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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JP5496590B2 (ja) * 2009-09-30 2014-05-21 大王製紙株式会社 衛生用薄葉紙及び衛生用薄葉紙の製造方法
JP6393997B2 (ja) * 2014-02-07 2018-09-26 王子ホールディングス株式会社 衛生薄葉紙製品の製造方法
WO2017168931A1 (fr) * 2016-03-31 2017-10-05 大王製紙株式会社 Procédé de fabrication de papier mince
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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US20220049426A1 (en) * 2018-11-30 2022-02-17 Daio Paper Corporation Tissue paper
US11686046B2 (en) * 2018-11-30 2023-06-27 Daio Paper Corporation Tissue paper

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US20230366156A1 (en) 2023-11-16

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