WO2018055785A1 - Rouleau de papier hygiénique - Google Patents

Rouleau de papier hygiénique Download PDF

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Publication number
WO2018055785A1
WO2018055785A1 PCT/JP2017/003349 JP2017003349W WO2018055785A1 WO 2018055785 A1 WO2018055785 A1 WO 2018055785A1 JP 2017003349 W JP2017003349 W JP 2017003349W WO 2018055785 A1 WO2018055785 A1 WO 2018055785A1
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WIPO (PCT)
Prior art keywords
roll
toilet
less
paper
winding
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Application number
PCT/JP2017/003349
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English (en)
Japanese (ja)
Inventor
康伸 大岡
大篭　幸治
Original Assignee
日本製紙クレシア株式会社
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Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=59678289&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2018055785(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 日本製紙クレシア株式会社 filed Critical 日本製紙クレシア株式会社
Priority to KR1020177027152A priority Critical patent/KR101845210B1/ko
Priority to CN201780000976.0A priority patent/CN107979982B/zh
Publication of WO2018055785A1 publication Critical patent/WO2018055785A1/fr

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Classifications

    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/02—Chemical or chemomechanical or chemothermomechanical pulp
    • D21H11/04—Kraft or sulfate pulp
    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/14—Secondary fibres
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/002—Tissue paper; Absorbent paper
    • D21H27/004—Tissue paper; Absorbent paper characterised by specific parameters
    • 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
    • D21H27/02—Patterned 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
    • D21H27/30—Multi-ply

Definitions

  • the present invention relates to a toilet roll obtained by winding up two-ply laminated toilet paper.
  • Toilet rolls that are mainly packaged in units of 4 rolls, 12 rolls, etc. are commercially available. Since these packages are bulky, the amount that can be carried at the time of purchase is limited, and the amount that can be purchased at one time is naturally limited. In addition, since the storage space is limited during storage at home, work, public facilities, etc., the amount that can be stored is limited.
  • toilet rolls have been developed in which the basis weight per sheet of toilet paper is reduced to 14 g / m 2 or less and the winding length is increased (Patent Documents 1 and 2).
  • the present applicant has developed a toilet roll having a longer winding length while improving the feeling of use by increasing the basis weight per sheet of toilet paper to be higher than 13 g / m 2 (Patent Document 3).
  • the invention described in Patent Document 3 improves the texture while increasing the basis weight of the toilet paper and ensures the softness of the sheet, but the softness of the roll has not been studied.
  • the softness of the roll is the tactile sensation when the toilet roll is held in the store, and does not directly reflect the softness of the sheet. This is because the softness of the sheet is important when the toilet roll is used, but the softness of the sheet cannot be confirmed by unwinding the roll at the store. Therefore, if the roll is hard, even if the sheet itself is soft, the sheet is considered to be hard, and there is a problem that the purchase cannot be promoted.
  • the present invention improves the softness of the sheet and roll without lowering the basis weight and lengthens the winding length per roll, thereby increasing the sales promotion effect due to the good softness and carrying amount and storage.
  • the purpose is to provide toilet rolls with excellent space saving.
  • the present inventors conducted extensive research. As a result, in the toilet roll obtained by rolling up two-ply laminated toilet paper into a roll shape, an emboss pattern is provided on the toilet paper, and the winding length, winding diameter, winding density and roll density of the toilet roll are adjusted to predetermined values. As a result, the present inventors have found that the above problems can be solved, and have completed the present invention. Specifically, the present invention provides the following.
  • a first aspect of the present invention is a toilet roll obtained by rolling up two-ply laminated toilet paper into a roll shape, wherein the toilet paper is provided with an emboss pattern, and the roll length of the toilet roll is 63 m or more and 105 m
  • the depth of the said embossing pattern may be 0.01 mm or more and 0.40 mm or less.
  • the embossed pattern may be a single embossed pattern.
  • the toilet paper may contain 40% by mass to 100% by mass of kraft pulp.
  • the toilet paper may contain 0% by mass to 60% by mass of waste paper pulp derived from milk carton.
  • the toilet paper becomes soft without decreasing the basis weight of the toilet paper. Further, by adjusting the roll length, roll diameter, roll density, and roll density of the toilet roll to predetermined values, the toilet roll has a long roll length per roll and excellent softness. Therefore, it is possible to obtain a toilet roll that is excellent in the amount that can be carried and the space saving at the time of storage while enhancing the sales promotion effect due to good softness.
  • a toilet roll 1 according to Embodiment 1 of the present invention is one in which two plies of toilet paper are laminated and wound into a roll.
  • the roll length of one roll of the toilet roll 1 of the present invention that is, the total length when the toilet roll 1 is unfolded is 63 m or more and 105 m or less, preferably 68 m or more and 95 m or less, and preferably 73 m or more and 85 m or less. More preferred.
  • the roll wound to a length within the above numerical range is cut to a predetermined width to produce one roll of toilet roll 1.
  • the winding diameter DR in the toilet roll 1 of the present invention is 105 mm or more and 140 mm or less, preferably 110 mm or more and 132 mm or less, and more preferably 115 mm or more and 123 mm or less.
  • Winding density in the toilet roll 1 is represented by (winding length ⁇ number of plies) ⁇ (cross-sectional area of the roll).
  • the cross-sectional area of the roll is represented by ⁇ the cross-sectional area of the outer diameter (winding diameter DR) portion of the roll ⁇ ⁇ (the cross-sectional area of the core outer diameter portion).
  • the core refers to the core of the toilet roll
  • the core outer diameter refers to the diameter of the center hole of the roll.
  • the winding density in the toilet roll 1 of the present invention is 1.1 m / cm 2 or more and 2.0 m / cm 2 or less, preferably 1.2 m / cm 2 or more and 1.8 m / cm 2 or less. More preferably, it is 5 m / cm 2 or more and 1.7 m / cm 2 or less.
  • the roll density of the toilet roll 1 of the present invention is represented by (roll mass not including the core) / (roll volume).
  • the roll mass is the mass of the toilet roll with the roll width W converted to around 114 mm.
  • the roll volume is expressed by [ ⁇ cross-sectional area of the outer diameter (rolling diameter) portion of the roll) ⁇ (cross-sectional area of the core outer diameter portion)] ⁇ roll width (converted per 114 mm).
  • the roll mass per roll width of 114 mm is 131 g
  • the winding diameter is 117 mm
  • the outer diameter of the core is 39 mm
  • the diameter of the center hole is the core outer diameter.
  • the roll density of the toilet roll 1 of the present invention is 0.17 g / cm 3 or more and 0.32 g / cm 3 or less, preferably 0.20 g / cm 3 or more and 0.29 g / cm 3 or less. More preferably, it is 22 g / cm 3 or more and 0.27 g / cm 3 or less.
  • the toilet roll 1 of the present invention by making the winding length and winding diameter within the above-mentioned numerical ranges, the amount that can be carried and the space saving at the time of storage are good, and the mounting property to the toilet paper holder is also good. A good toilet roll 1 can be obtained. Further, in the toilet roll 1 of the present invention, the roll density and roll density are within the above numerical ranges, so that the roll is soft and the core and roll have good adhesion. 1 can be used. Therefore, by making the winding length, winding diameter, winding density, and roll density within the above numerical range, the toilet has excellent sales promotion effect due to good softness and is excellent in carrying amount and space saving at the time of storage. Roll 1 can be used.
  • the roll mass of the toilet roll 1 of the present invention is a roll mass that does not include a core (core) whose roll width W is 114 mm.
  • the roll mass is obtained by converting W into 114 mm.
  • the mass obtained by multiplying the roll mass by a coefficient (114/105) is the roll mass per W of 114 mm.
  • the roll mass of the toilet roll 1 of the present invention is preferably 200 g or more and 400 g or less, more preferably 230 g or more and 350 g or less, and further preferably 250 g or more and 330 g or less.
  • the toilet roll 1 of the present invention by setting the roll mass within the above numerical range, the toilet roll 1 having a good winding length, winding diameter and mass per roll can be obtained.
  • the outer diameter of the core of the toilet roll 1 of the present invention is preferably 25 mm or more and 48 mm or less, more preferably 35 mm or more and 46 mm or less, and further preferably 37 mm or more and 43 mm or less.
  • the toilet roll 1 of the present invention by setting the core outer diameter within the above numerical range, the toilet roll 1 can be easily attached to the toilet paper holder and can be handled at the time of manufacture. it can.
  • the weight of the core of the toilet roll 1 is preferably 3.0 g or more and 5.7 g or less, more preferably 3.7 g or more and 5.2 g or less, and 4.2 g or more and 4.8 g or less. Is more preferable.
  • the mass of the core is a mass having a roll width of 114 mm, like the roll mass.
  • the roll softness of the toilet roll 1 is measured as follows using a compression tester (a handy compression tester KES-G5 manufactured by Kato Tech Co., Ltd.). In addition, let the direction parallel to the axial center of the toilet roll 1 be a height direction, and let the direction perpendicular
  • an acrylic pipe is inserted into the core of the toilet roll 1.
  • the wall thickness of the acrylic pipe is 2 mm.
  • the length of the acrylic pipe is 10 mm longer than the roll width of the toilet roll 1 (when the roll width of the toilet roll 1 is 114 mm, the length of the acrylic pipe is 124 mm).
  • the outer diameter of the acrylic pipe is slightly smaller than the inner diameter of the core of the toilet roll 1, and when the acrylic roll is placed so that the axis of the toilet roll 1 is vertical after insertion, the toilet roll does not move by its own weight. Size.
  • the wall thickness may be slightly reduced with water-resistant paper or the like.
  • the mass of the acrylic pipe is about 31 g when the length is 125 mm and the outer diameter is 38 mm.
  • the toilet roll 1 is placed on a hard table so that its axis is horizontal. Then, the above-mentioned KES-G5 compressor (area 2.0 cm 2 ) is pushed into the center of the toilet roll 1 in the radial direction from above in the radial direction at a speed of 10 mm / min.
  • T0 be the indentation depth when the pressure at which the compressor pushes the roll is 5 gf / cm 2
  • Tm be the indentation depth when the pressure is 150 gf / cm 2
  • (Tm ⁇ T0) be the roll softness. The measurement is performed 5 times, and the measurement results are averaged.
  • the height direction at the time of pushing the said compressor into the toilet roll 1 does not need to be a center part of a height direction except the both ends of a height direction.
  • the measurement is performed by pressing the above-mentioned compressor near the middle between the center portion and the end portion of the toilet roll 1 in the height direction.
  • the roll softness of the toilet roll 1 of the present invention is preferably 0.4 mm or more and 1.9 mm or less, more preferably 0.5 mm or more and 1.6 mm or less, and 0.6 mm or more and 1.2 mm or less. More preferably it is.
  • the toilet paper in the toilet roll 1 of the present invention may be composed of 100% by mass of wood pulp, and may include waste paper pulp, non-wood pulp, and deinked pulp.
  • the content of NBKP conifer bleached kraft pulp
  • NBKP conifer bleached kraft pulp
  • LBKP hardwood bleached kraft pulp
  • the content of LBKP is preferably 30% by mass to 90% by mass, more preferably 40% by mass to 80% by mass, and more preferably 50% by mass to 70% by mass. More preferably, it is as follows.
  • the content of the waste paper pulp derived from the milk carton (milk pack) is preferably 0% by mass to 60% by mass, more preferably 10% by mass to 50% by mass, and more preferably 20% by mass to 40%. More preferably, it is at most mass%. Moreover, as a content rate of a kraft pulp, it is preferable that it is 40 to 100 mass%, It is more preferable that it is 50 to 90 mass%, It is 60 to 80 mass% Is more preferable.
  • Waste paper pulp derived from milk cartons is mainly composed of softwood pulp, and has the advantage of ensuring the strength of toilet paper. On the other hand, if the content ratio is too high, the quality of the product will be affected.
  • the content is preferably within the above numerical range.
  • the pulp produced from Eucalyptus eucalyptus represented by Eucalyptus genus Grandis and Eucalyptus globulus as the grade of LBKP is preferable.
  • 25 parts by mass or less of deinked pulp derived from newspaper or magazine waste paper can be blended with 100 parts by weight of waste paper pulp derived from NBKP, LBKP, or milk carton.
  • the content of the deinked pulp is preferably 0% by mass to 20% by mass, more preferably 0% by mass to 10% by mass, and further preferably 0% by mass to 5% by mass.
  • the content is preferably 0% by mass. Since deinked pulp is also used paper, the quality will vary greatly.
  • deinked pulp usually contains a fluorescent dye, and if its content exceeds 20% by mass, it will contain a lot of fluorescent dye, which is not preferable.
  • raw materials can be blended by ordinary means, and the strength can be adjusted by beating the pulp fiber.
  • the beating to obtain the target quality, it is preferable to reduce the Canadian standard freeness measured by JIS-P8121 with respect to commercially available virgin pulp, and the difference in Canadian standard freeness before and after the beating is 0 mL. It is preferably 150 mL or less, more preferably 10 mL or more and 100 mL or less, and further preferably 20 mL or more and 70 mL or less.
  • Toilet paper can be made by blending softwood kraft pulp and hardwood kraft pulp having a certain range of fiber length and fiber roughness in a specific range when virgin raw materials are used for the stock.
  • Additives to paper stocks include softeners including debonder softeners, bulking agents, dyes, dispersants, dry paper strength enhancers, drainage improvers, pitch control agents, absorbency, depending on the required quality of the final product. An improver or the like can be used. Moreover, it is preferable not to use a wet paper strength enhancer.
  • emboss pattern It is preferable to provide an emboss pattern on the first ply and the second ply of the toilet paper in the toilet roll 1 of the present invention, and a single emboss pattern 2 is preferable.
  • an emboss pattern says the uneven
  • FIG. 2 shows a photographed image of the recess 2R of the embossing pattern of the single embossing pattern 2 on the surface side of the toilet paper in the toilet roll 1.
  • the surface side of toilet paper means the surface which comprises the outer side of toilet roll 1
  • the back surface side of toilet paper is the inner side which is the paper tube side of toilet roll 1
  • the emboss pattern on each sheet is plyed up with the convex surfaces inside each other. Since the two-ply lamination is performed, the toilet paper thickness becomes too high, the winding density becomes low, and it may be difficult to secure the winding length. Further, even in a double emboss pattern, if the depth of the emboss pattern is reduced, the paper thickness is reduced, but the softness of the sheet may be inferior.
  • the single embossed pattern 2 it is possible to obtain the toilet roll 1 that is excellent in the amount that can be carried and the space saving at the time of storage while enhancing the sales promotion effect due to good softness.
  • ply bond glue glue
  • knurling edge emboss
  • the single embossed pattern 2 is preferable because it can be laminated in two plies without using ply bond glue or knurling.
  • FIG. 3 is a cross-sectional view showing a single embossed pattern 2 provided on toilet paper in which two plies are laminated in the toilet roll 1.
  • 3 corresponds to the roll surface side
  • FIG. 3A shows a case where the depth D of the emboss pattern is deep
  • FIG. 3B shows a case where the depth D of the emboss pattern is shallow.
  • the paper thickness t2 of the toilet paper after the embossing process this paper thickness reflects the distance between the non-embossed pattern portion on the front surface side of the toilet paper and the convex portion 2P of the embossed pattern on the back surface side). It is. However, even when the paper thickness t2 of the toilet paper is the same, the sheet in FIG.
  • the embossed pattern of FIG. 3 (a) has a higher bulk with respect to the thickness of the base paper (lower density), and is more easily deformed, improving the softness of the sheet. It is done. Moreover, if it is made smooth without providing an emboss pattern on the surface side of the toilet paper, the surface is too smooth and the surface feels crisp, and the softness of the sheet is inferior.
  • the depth D of the embossing pattern of the single embossing pattern 2 of the toilet paper in the toilet roll 1 of the present invention is preferably 0.01 mm or more and 0.40 mm or less, and 0.04 mm or more and 0.35 mm or less. Is more preferably 0.09 mm or more and 0.30 mm or less.
  • the toilet roll 1 of the present invention By setting the depth D of the embossing pattern of the toilet paper in the toilet roll 1 of the present invention within the above numerical range, the toilet roll 1 having good bulkiness and high density and excellent softness is obtained. Can do.
  • the concave portion 2R of the embossed pattern when the concave portion 2R of the embossed pattern is provided on the surface side where water is likely to adhere when using a warm water washing toilet seat or the like, the concave portion 2R has a better tactile feel than the convex portion 2P, so the softness of the sheet is improved To do.
  • the depth D of the embossed pattern of the toilet paper in the toilet roll 1 of the present invention is obtained by measuring the height difference of the embossed pattern using a microscope.
  • the product name “One-shot 3D measurement macroscope VR-3100” manufactured by KEYENCE can be used as the microscope.
  • the product name “VR-H1A” can be used as a microscope image observation / measurement / image analysis software. Measurement is performed under the conditions of a magnification of 12 times and a visual field area of 24 mm ⁇ 18 mm. In addition, you may change a measurement magnification and a visual field area suitably according to the magnitude
  • FIG. 5A shows a height profile on the XY plane by a microscope, and it can be seen that the height of the toilet paper surface is represented by shading.
  • 5A shows individual emboss patterns, and the longest part a of one emboss pattern can be distinguished from FIG. 5A.
  • a line segment AB that crosses the longest portion a is drawn, a height (measured cross-section curve) profile of the emboss pattern is obtained as shown in FIG.
  • the line segment AB extends across the portion where the convex portion and the concave portion are adjacent to each other. You can decide.
  • the height profile in FIG. 5 (b) is a (measurement) cross-sectional curve T representing the unevenness of the actual toilet paper sample surface, but there is noise (fiber lump on the toilet paper surface or fibers In addition, it includes a steep peak due to a beard-like shape or a portion having no fiber), and it is necessary to remove such a noise peak when calculating the height difference of the unevenness.
  • the “contour curve” U is calculated from the cross-sectional curve T of the height profile, and two inflection points P1 and P2 that are convex upward are obtained from the contour curve U.
  • the minimum value sandwiched between the inflection points P1 and P2 the minimum value Min of the depth is obtained.
  • the average value of the depth values of the inflection points P1 and P2 is set as the maximum value Max.
  • the depth D of the emboss pattern is set to the maximum value Max ⁇ the minimum value Min.
  • the distance (length) on the XY plane between the inflection points P1 and P2 is defined as the length of the longest portion a.
  • the “contour curve” is ⁇ c: 800 ⁇ m from the cross-sectional curve (where ⁇ c is a “filter that defines the boundary between the roughness component and the swell component” described in JIS-B0601 “3.1.1.2”). It is a curve obtained by removing the surface roughness component of a shorter wavelength with a low-pass filter.
  • ⁇ c is set to be equal to or larger than the interval P1 between adjacent emboss patterns (this is referred to as an emboss pitch), the peak may be recognized as noise, so ⁇ c is set to be less than the emboss pitch.
  • the emboss pitch is 800 ⁇ m or less, for example, ⁇ c is set to 250 ⁇ m.
  • the P1 interval between adjacent emboss patterns is similarly determined for P1 and P2 for the next emboss pattern connected to the left or right in FIG. 6, and two P1s when adjacent emboss patterns are aligned with P1, P2, and P1. Is the interval.
  • the depth D of the emboss pattern is measured for the longest portion b in the direction perpendicular to the longest portion a in FIG. 5A, and the depth D of each emboss pattern of the longest portions a and b is The larger value is adopted as the depth D of the emboss pattern.
  • the above measurement is performed on any ten emboss patterns on the surface side of the toilet paper, and the average value is adopted as the depth D of the final emboss pattern.
  • the embossed pattern is connected in the flow direction (MD direction)
  • the longest part a becomes the same as the winding length, the height difference cannot be obtained, and the depth D of the concave portion is set. It cannot be measured.
  • the depth D of the recess can be measured by drawing a line segment AB so as to straddle the emboss pattern in the width W direction orthogonal to the direction (MD direction) where the emboss pattern is connected.
  • a line segment AB is drawn across the emboss pattern in the flow direction (MD direction), and the depth D of the recess is measured.
  • the measurement surface is the front side of the toilet paper, whether it is the single embossed pattern 2 or the double embossed pattern.
  • each embossing pattern of the toilet paper in the toilet roll 1 of the present invention is obtained as the area S of the embossing pattern by the product of the longest part a and the longest part b (a ⁇ b).
  • the longest part a and the longest part b values obtained by averaging the values of individual a and b for the ten emboss patterns on the surface side of the toilet paper described above are used.
  • the measuring method of depth D of said embossing pattern can be used.
  • the area S of each embossing pattern of the single embossing pattern 2 of the toilet paper in the toilet roll 1 of the present invention is preferably 0.2 mm 2 or more and 9.0 mm 2 or less, and 1.0 mm 2 or more and 7.0 mm 2 or less. It is more preferable that it is 1.8 mm 2 or more and 5.0 mm 2 or less. Further, the area ratio of the embossed pattern (ratio of the portion having the embossed pattern in the toilet paper) is preferably 3% to 60%, more preferably 7% to 45%, and more preferably 10%. More preferably, it is 30% or less.
  • the area ratio of the convex portion of the embossing roll 111 can be set as the area ratio of the embossing pattern.
  • the cosmetics and the winding density can be improved.
  • the shape of the emboss pattern is not particularly limited, such as a rectangle, a square, a round shape, or a long round shape.
  • the winding diameter and the winding density can be adjusted by appropriately adjusting the size of the embossed pattern and the area ratio (number) of the embossed pattern described above.
  • UV-in is a whiteness degree based on ISO 2470 when a C light source (including ultraviolet light) specified by CIE (International Commission on Illumination) is irradiated on the sheet surface side.
  • UV-cut is the degree of whiteness in accordance with ISO 2470 when a C light source is irradiated on the sheet surface side through a filter that cuts ultraviolet light having a wavelength of 420 nm or less.
  • Difference ⁇ (whiteness UV-in) ⁇ (whiteness UV-cut).
  • the whiteness can be measured using a high-speed spectrophotometer CMS-35SPX manufactured by Murakami Color Research Laboratory Co., Ltd. according to ISO 2470.
  • the difference ⁇ between the whiteness UV-in and the whiteness UV-cut on the surface side of the toilet paper in the toilet roll 1 of the present invention is preferably 0.0 points or more and 2.5 points or less, and 0.0 points It is more preferably 1.5 points or less, more preferably 0.0 points or more and 1.0 points or less, and particularly preferably 0.0 points or more and 0.5 points or less.
  • the basis weight of the toilet paper in the toilet roll 1 of the present invention is preferably 13.0 g / m 2 or more and 19.0 g / m 2 or less per ply, and 13.5 g / m 2 or more and 17.0 g / m. It is more preferably 2 or less, and further preferably 14.1 g / m 2 or more and 16.0 g / m 2 or less.
  • the paper thickness of the toilet paper in the toilet roll 1 of the present invention is preferably 0.45 mm / 10 or more and 1.20 mm / 10 or less, and is 0.55 mm / 10 or more and 1.05 mm / 10 or less. More preferably, it is 0.65 mm / 10 or more and 0.90 mm / 10 or less.
  • the basis weight and paper thickness per toilet paper 1 ply in the toilet roll 1 of the present invention within the above numerical range, the winding density and roll density can be easily adjusted, and the strength is good.
  • the toilet roll 1 having good usability and bulkiness can be obtained.
  • the specific volume of the toilet paper in the toilet roll 1 of the present invention was expressed as a volume cm 3 per unit g by dividing the paper thickness per sheet by the basis weight per sheet.
  • Specific volume of the toilet paper in toilet rolls 1 of the present invention it is preferably, 3.3 cm 3 / g or more 6.7 cm 3 / g or less 3.0cm is 3 / g or more 7.5 cm 3 / g or less it is more preferable, and further preferably 3.6 cm 3 / g or more 6.4 cm 3 / g or less.
  • the softness and water absorption of the sheet are good and the bulk of the embossing treatment is good. Can do.
  • the strength of the toilet paper laminated in two plies in the toilet roll 1 of the present invention is determined by using DMDT (Dry Machine Direction Tensile strength) in the longitudinal direction during drying based on JIS P 8113, and the tensile strength in the transverse direction during drying. Is assumed to be DCDT (Dry Cross Direction Tensile Strength).
  • DMDT Dia Machine Direction Tensile strength
  • the flow direction of the product papermaking is the vertical direction
  • the direction perpendicular to the flow direction is the horizontal direction.
  • the DMDT of the toilet paper laminated in two plies in the toilet roll 1 of the present invention is preferably 2.5 N / 25 mm or more and 7.0 N / 25 mm or less, and is 3.0 N / 25 mm or more and 5.8 N / 25 mm or less. Is more preferably 3.5 N / 25 mm or more and 4.5 N / 25 mm or less.
  • the DCDT of the toilet paper laminated in two plies in the toilet roll 1 of the present invention is preferably 0.7 N / 25 mm or more and 2.2 N / 25 mm or less, and 0.8 N / 25 mm or more and 1.8 N / 25 mm or less.
  • the measurement of tensile strength is performed on conditions with a tensile speed of 300 mm / min.
  • the tensile strength can be adjusted by a known method.
  • the toilet roll 1 of the present invention By setting DMDT and DCDT of the toilet paper in the toilet roll 1 of the present invention within the above numerical range, the toilet roll 1 having good strength and softness can be obtained.
  • the water absorption of the toilet paper in the toilet roll 1 of the present invention is measured based on the old JIS S 3104.
  • the water absorption of the toilet paper laminated in two plies in the toilet roll 1 of the present invention is preferably 7.0 seconds or less, more preferably 5.0 seconds or less, and 3.0 seconds or less. Further preferred. By setting it as the thing within said numerical range, it can be set as the toilet roll 1 with favorable water absorption and water absorption. In addition, when dripping water, it is dripped at the surface side of toilet paper.
  • the ease of unraveling when the two-ply laminated toilet paper in the toilet roll 1 of the present invention is peeled off is preferably 8 seconds or longer and 60 seconds or shorter, more preferably 15 seconds or longer and 50 seconds or shorter. More preferably, it is 20 seconds or more and 40 seconds or less. By setting it as the thing within said numerical range, it can be set as the toilet roll 1 with the favorable water resistance when the toilet paper in the use of the toilet paper in the use of the water-washing toilet seat and warm water easiness to wet.
  • Toilet roll 1 and toilet paper are manufactured, for example, in the following order: (i) papermaking and creping, (ii) ply-up and calendering with a machine winder, (iii) embossing and roll winding. Can do.
  • a web is made from the above-mentioned stock on a wire part of a known papermaking machine, and moved to the felt of the press part.
  • the wire part type include a round net type, a long net type (Ford Linear) type, a suction breast type, a short net type, a twin wire type, and a crescent former type.
  • the web is dehydrated by a dehydration method such as dehydration by mechanically compressing the web with a suction pressure roll or a non-suction pressure roll or press roll, or aeration drying with hot air.
  • a dehydration method such as dehydration by mechanically compressing the web with a suction pressure roll or a non-suction pressure roll or press roll, or aeration drying with hot air.
  • the suction pressure roll or the pressure roll without suction is also used as a means for moving the web from the press part to the Yankee dryer.
  • the web moved to the Yankee dryer is dried by a Yankee dryer and a Yankee dryer hood, then creped by a creping doctor, and taken up by a reel part.
  • Creping is to mechanically compress the paper in the longitudinal direction (the sheet running direction on the paper machine).
  • the web on the Yankee dryer is peeled off by the creping doctor and wound on the reel part.
  • the speed difference between the Yankee dryer and the reel part (reel part speed ⁇ Yankee dryer speed) ), A crepe is formed by a creping doctor.
  • the quality required for the toilet paper that is, bulk (bulk feeling), softness, water absorption, surface smoothness, aesthetics (crepe shape), and the like depend on the speed difference. Although it depends on conditions such as the speed difference, the basis weight of the web on the reel after creping is approximately 14 g / m 2 to 21 g / m 2, which is heavier than the basis weight of the web on the Yankee dryer before creping.
  • the basis weight is preferably 14 g / m 2 or more and 19 g / m 2 or less, and more preferably 15 g / m 2 or more and 18 g / m 2 or less. If the above range is exceeded, the strength may be high and the paper may be stiff or the winding density or roll density may be too high. If it is less than the above range, the strength may be low and it may be easily torn, or the feel or bulkiness may be increased. May be inferior.
  • crepe rate (%) 100 ⁇ (Yankee dryer speed (m / min) ⁇ reel speed (m / min)) ⁇ reel speed (m / min)
  • the crepe rate when producing toilet paper is preferably 10% or more and 50% or less, more preferably 15% or more and 40% or less, and further preferably 20% or more and 35% or less. preferable.
  • calendar processing is performed in two stages in order of the calendar machine 101 of the first stack and the calendar machine 102 of the second stack after the ply-up.
  • only one stage of calendar processing may be performed on either the first stack calendar machine 101 or the second stack calendar machine 102. It is also possible to perform calendar processing before ply-up or using an on-machine calendar.
  • the thickness of the toilet paper before embossing is preferably 0.50 mm / 10 or more and 1.40 mm / 10 or less, 0.60 mm / 10 or more and 1.20 mm / 10 or less. It is more preferable that it is 0.60 mm / 10 or more and 0.90 mm / 10 or less.
  • the specific volume of the toilet paper in bulk roll 12 of embossed before (after calendering) is, 3.4cm 3 / preferably g or higher 6.5cm at 3 / g or less, 3.7 cm 3 / g or more more preferably 6.0cm at 3 / g or less, more preferably 4.0 cm 3 / g or more 5.5cm 3 / g or less.
  • the paper thickness of the toilet paper before the embossing processing is the paper thickness of the original fabric roll 12 after the calendar processing in FIG. 8, and corresponds to the paper thickness t1 in FIG.
  • the paper thickness is a value measured at a measurement load of 3.7 kPa, it does not accurately reflect the paper thickness t1 in FIG.
  • the first stack calender machine 101 and the second stack calender machine 102 are preferably each composed of two metal rolls, but one of the two rolls is an elastic roll so that soft calender processing can be performed. It may be.
  • the linear pressure of the calendar is preferably from 3.0 kgf / cm to 8.0 kgf / cm, more preferably from 4.0 kgf / cm to 7.0 kgf / cm.
  • the linear pressure is preferably higher than the first stack.
  • Draw can be adjusted as appropriate during calendar processing.
  • the draw between the reel 11 before the ply-up and the raw roll 12 after the calendar process is preferably 100% or more and 110% or less, and more preferably 102% or more and 108% or less.
  • the basis weight is preferably slightly higher than the target basis weight of the toilet roll 1 in the final form.
  • the paper thickness t1 per sheet In order to increase the depth D of the emboss pattern, it is necessary to reduce the paper thickness t1 per sheet and make the unevenness conspicuous. Can be improved.
  • the paper thickness is reduced similarly to the basis weight before and after winding, but the embossing can be adjusted to the target paper thickness of the toilet roll 1 in the final form.
  • the paper thickness may decrease after the embossing process. In that case, adjust the base paper and calendar appropriately so that the target paper thickness and winding density of the toilet roll are adjusted. .
  • FIG. 9 shows an example of a roll winding machine 110.
  • the original fabric roll 12 is preliminarily made into two plies by a ply machine and calendered to become an original fabric roll 12 (paper thickness t1 of each sheet).
  • the raw roll 12 is set on a roll winding machine 110, subjected to a single embossing process by an embossing unit (embossing roll 111), and then wound on a wide base paper roll 13 having the above winding diameter by a winding mechanism 113. It is done. Thereafter, the base paper roll 13 is cut into a predetermined width (114 mm or the like) to form the toilet roll 1.
  • the roll winding machine 110 can be roughly classified into two types: a surface method and a center method.
  • the surface method is a method in which the roll to be wound is wound while being supported by a plurality of other drive rolls from the outside, and the wound toilet roll 1 is easy to control the winding diameter, and the production speed becomes higher.
  • the center method is a method of winding by driving a shaft passing through the center of the winding roll.
  • the wound toilet roll 1 is a relatively soft product and is suitable for a product with delicate embossing. In the present invention, any method can be used for winding, but the surface method is preferred. According to the surface system, the winding diameter and winding density of the roll can be adjusted relatively easily with the strength of winding the roll.
  • machine winder 100 may be incorporated in the roll winder 110, and the roll winder 110 may perform ply-up, calendar processing, and embossing in this order.
  • each hygienic thin paper sheet may be plyed up after the calendar process and embossed.
  • the single embossed pattern 2 is formed by laminating two plies of the raw fabric roll 12 and pressing the convex portion of the embossed pattern of the embossed roll 111 against the surface which becomes the surface side. Thereby, the embossing pattern (single embossing pattern 2) which the recessed part 2R appears on the surface (surface used as the surface side) which pressed the embossing roll 111 of the toilet paper in the toilet roll 1 and the convex part 2P on the back surface is formed.
  • the depth D of the emboss pattern can be controlled by appropriately adjusting the nip width of the rubber roll 112 facing the emboss roll 111.
  • the embossing pattern depth D can be adjusted by narrowing the nip width if the embossing roll 111 is deep, and increasing the nip width if the embossing roll 111 is shallow.
  • the strength of winding the roll can be adjusted so as to ensure the depth D of the emboss pattern. For example, when the depth of the emboss pattern is increased, the emboss pattern is liable to be crushed when the roll is wound. Therefore, the depth D of the emboss pattern can be adjusted by reducing the strength of winding the roll.
  • the pressing force of the rider roll 114 for sequentially winding the sheet by pressing the base paper roll 13 from the outer peripheral side can be adjusted by setting to a predetermined range.
  • the nip width varies depending on the characteristics of the roll, but is preferably 20 mm or more and 50 mm or less, more preferably 25 mm or more and 45 mm or less, and further preferably 30 mm or more and 40 mm or less.
  • Nip width can be measured using carbon paper.
  • a measuring method first, the nip of the embossing roll 111 is escaped, and carbon paper and general copy paper are stacked and set. Next, the embossing roll 111 is nipped. Then, let the nip escape and remove the carbon paper and copy paper. Since the color of the carbon paper where the nip is applied by the embossing roll 111 is transferred to the copy paper, the nip width can be measured.
  • the roll winder 110 can perform printing, embossing patterning, perforation processing, tail sealing, and cutting with a predetermined width (114 mm, etc.), and the toilet roll 1 can be manufactured. Furthermore, the package body of the toilet roll 1 can be manufactured by film packaging processing thereafter.
  • the means for ensuring the softness of the toilet paper is not limited to the embossed pattern, as long as it provides unevenness on the surface.
  • unevenness may be applied to the web during paper making using an uneven fabric.
  • the depth of the unevenness may be in a range corresponding to the depth D of an emboss pattern to be described later.
  • the content of the pulp composition is (mass%) NBKP 10%, LBKP 60%, waste paper derived from milk carton 30%, deinked pulp is not contained, and the apparatus shown in FIG. 8 and FIG. The toilet paper and toilet roll shown in 2 were manufactured.
  • Basis weight Measured based on JIS P 8124 and converted per sheet.
  • Paper thickness Measured using a thickness gauge (a dial thickness gauge “PEACOCK” manufactured by Ozaki Seisakusho). The measurement conditions were a measurement load of 3.7 kPa and a probe diameter of 30 mm. A sample was placed between the probe and the measurement table, and the gauge was read when the probe was lowered at a speed of 1 mm or less per second. In addition, about the web before a calendar process, it measures by overlapping 10 sheets, and after a calendar process (after ply-up) and a roll, 5 sheets (5 sets) of toilet paper which laminated 2 plies of sheets are stacked. went. The measurement was repeated 10 times and the measurement results were averaged.
  • a thickness gauge a dial thickness gauge “PEACOCK” manufactured by Ozaki Seisakusho
  • the longitudinal tensile strength during drying DMDT and the lateral tensile strength during drying DCDT Based on JIS P 8113, the maximum load until breakage was measured in units of N / 25 mm for toilet paper (2 plies). The tensile strength is measured under the condition of a tensile speed of 300 mm / min.
  • Roll diameter DR Measured using a Diameter Rule manufactured by Muratec KDS Co., Ltd. The measurement measured 10 rolls and averaged the measurement results.
  • Core outer diameter Measured using a Diameter Rule manufactured by Muratec KDS Corporation. In the measurement, 10 cores were measured and the measurement results were averaged.
  • the roll winding density, roll density, and emboss pattern depth were measured by the methods described above.
  • the paper thickness of the toilet paper after the embossing process shown in Table 1 and Table 2 corresponds to the paper thickness t2 in FIG. 3, since it is a value measured at a measurement load of 3.7 kPa, the paper thickness t2 is accurately set. It is not a reflection.
  • the depth of the embossed pattern is measured in a state where the embossed pattern is not compressed. Therefore, the depth of the emboss pattern is significantly larger than the value calculated from the paper thicknesses t1 and t2 (this value is a value obtained by compressing the emboss pattern with a measured load of 3.7 kPa).
  • the softness of the sheet was excellent by providing an embossed pattern with an appropriate depth, but in the case of Comparative Example 1 in which the winding length was less than 63 m, the winding diameter was less than 105 mm, and the roll replacement frequency increased. It was.
  • the roll length was less than 63 m, and the roll replacement frequency increased.

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  • Public Health (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sanitary Thin Papers (AREA)
  • Paper (AREA)

Abstract

L'invention concerne un rouleau de papier hygiénique qui présente une excellente souplesse de feuille et de rouleau sans réduction de son poids de base, une longueur d'enroulement par rouleau supérieure, un effet promotionnel, tout en étant compact lorsqu'il est transporté ou stocké. Le rouleau de papier hygiénique est un rouleau de papier hygiénique (1) dans lequel du papier hygiénique stratifié à deux couches est enroulé en un rouleau, un motif gaufré étant disposé sur le papier hygiénique et le rouleau de papier hygiénique (1) ayant une longueur d'enroulement de 63 à 105 m, un diamètre d'enroulement de 105 à 140 mm, une densité d'enroulement de 1,1 à 2,0 m/cm2 et une densité de rouleau de 0,17 à 0,32 g/cm3.
PCT/JP2017/003349 2016-09-23 2017-01-31 Rouleau de papier hygiénique WO2018055785A1 (fr)

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US20040074594A1 (en) * 2002-08-22 2004-04-22 Georgia-Pacific France Roll of tissue paper sheets, and associated manufacturing method
WO2012043378A1 (fr) * 2010-09-30 2012-04-05 大王製紙株式会社 Papier hygiénique désintégrable dans l'eau et procédé de fabrication de papier hygiénique désintégrable dans l'eau
JP2013202345A (ja) * 2012-03-29 2013-10-07 Daio Paper Corp トイレットロールの製造方法
JP2013208297A (ja) * 2012-03-30 2013-10-10 Daio Paper Corp トイレットペーパーロール及びその製造方法
WO2014020424A1 (fr) * 2012-08-03 2014-02-06 Sca Tissue France Produit de papier mince multiplis et son procédé de fabrication
JP2014188342A (ja) * 2013-03-28 2014-10-06 Nippon Paper Crecia Co Ltd 衛生薄葉紙ロール
JP2016158856A (ja) * 2015-03-02 2016-09-05 丸富製紙株式会社 ペーパーロール

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JP3619808B2 (ja) * 2002-01-08 2005-02-16 大王製紙株式会社 トイレット用巻取衛生ロール紙
JP5394684B2 (ja) * 2008-07-31 2014-01-22 大王製紙株式会社 衛生薄葉紙
JP5305986B2 (ja) * 2009-02-27 2013-10-02 大王製紙株式会社 衛生薄葉紙
JP5931390B2 (ja) * 2011-09-29 2016-06-08 大王製紙株式会社 トイレットロールの製造方法
JP2015508131A (ja) * 2012-02-22 2015-03-16 ザ プロクター アンド ギャンブルカンパニー エンボス加工された繊維性構造体及びその製造方法

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Publication number Priority date Publication date Assignee Title
JPH10272710A (ja) * 1997-03-31 1998-10-13 Oji Paper Co Ltd 圧縮トイレットペーパーロールの製造方法
US20040074594A1 (en) * 2002-08-22 2004-04-22 Georgia-Pacific France Roll of tissue paper sheets, and associated manufacturing method
WO2012043378A1 (fr) * 2010-09-30 2012-04-05 大王製紙株式会社 Papier hygiénique désintégrable dans l'eau et procédé de fabrication de papier hygiénique désintégrable dans l'eau
JP2013202345A (ja) * 2012-03-29 2013-10-07 Daio Paper Corp トイレットロールの製造方法
JP2013208297A (ja) * 2012-03-30 2013-10-10 Daio Paper Corp トイレットペーパーロール及びその製造方法
WO2014020424A1 (fr) * 2012-08-03 2014-02-06 Sca Tissue France Produit de papier mince multiplis et son procédé de fabrication
JP2014188342A (ja) * 2013-03-28 2014-10-06 Nippon Paper Crecia Co Ltd 衛生薄葉紙ロール
JP2016158856A (ja) * 2015-03-02 2016-09-05 丸富製紙株式会社 ペーパーロール

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CN107979982A (zh) 2018-05-01

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