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WO2016194460A1 - Feuille pouvant se désintégrer dans l'eau - Google Patents

Feuille pouvant se désintégrer dans l'eau Download PDF

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Publication number
WO2016194460A1
WO2016194460A1 PCT/JP2016/060510 JP2016060510W WO2016194460A1 WO 2016194460 A1 WO2016194460 A1 WO 2016194460A1 JP 2016060510 W JP2016060510 W JP 2016060510W WO 2016194460 A1 WO2016194460 A1 WO 2016194460A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
sheet
base paper
emboss
embossing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2016/060510
Other languages
English (en)
Japanese (ja)
Inventor
慎也 和泉
朝子 田中
敦子 長谷澤
真平 向山
孝介 山崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daio Paper Corp
Original Assignee
Daio Paper Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2015110839A external-priority patent/JP6096245B2/ja
Priority claimed from JP2015110837A external-priority patent/JP6096244B2/ja
Application filed by Daio Paper Corp filed Critical Daio Paper Corp
Priority to CN201680025988.4A priority Critical patent/CN107532389A/zh
Priority to KR1020177032368A priority patent/KR102510363B1/ko
Priority to EP16802897.5A priority patent/EP3305983B1/fr
Priority to US15/576,931 priority patent/US20180146834A1/en
Publication of WO2016194460A1 publication Critical patent/WO2016194460A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/002—Tissue paper; Absorbent paper
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/16—Cloths; Pads; Sponges
    • A47L13/17—Cloths; Pads; Sponges containing cleaning agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/03—Non-macromolecular organic compounds
    • D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
    • D21H17/06—Alcohols; Phenols; Ethers; Aldehydes; Ketones; Acetals; Ketals
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H19/00—Coated paper; Coating material
    • D21H19/10—Coatings without pigments
    • D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
    • D21H19/34—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising cellulose or derivatives thereof
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/30—Multi-ply
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K11/00—Closets without flushing; Urinals without flushing; Chamber pots; Chairs with toilet conveniences or specially adapted for use with toilets
    • A47K11/10—Hand tools for cleaning the toilet bowl, seat or cover, e.g. toilet brushes

Definitions

  • the present invention relates to a water disintegratable sheet.
  • This invention was made in view of the said subject, and it aims at providing the water-decomposable sheet which suppressed the transpiration
  • the invention according to claim 1 is a water-degradable sheet obtained by impregnating a chemical with a base paper sheet to which a water-soluble binder is added,
  • the base paper sheet is It is made by plying multiple sheets of paper and has a basis weight of 30 to 150 gsm.
  • the mixing ratio of softwood pulp to hardwood pulp is less than 1/1
  • the chemical solution includes a crosslinking agent that causes a crosslinking reaction to the water-soluble binder, and a polyhydric alcohol having a valence of 3 or more, 1 to 20% by weight of the trihydric or higher polyhydric alcohol is impregnated with respect to the weight of the base paper sheet.
  • the invention according to claim 2 is a water-degradable sheet obtained by impregnating a chemical with a base paper sheet to which a water-soluble binder is added,
  • the base paper sheet is It is made by plying multiple sheets of paper and has a basis weight of 30 to 150 gsm.
  • the blending ratio of softwood pulp to hardwood pulp is less than 2/3
  • the chemical solution includes a crosslinking agent that causes a crosslinking reaction in the water-soluble binder, 150 to 300% by weight of the chemical solution is impregnated with respect to the weight of the base paper sheet.
  • the invention according to claim 3 is the water-decomposable sheet according to claim 1 or 2,
  • the base paper sheet is characterized in that the content of the water-soluble binder is increased from the inner side in the thickness direction of the base paper sheet toward the front and back surfaces.
  • the invention according to claim 4 is the water-decomposable sheet according to any one of claims 1 to 3,
  • the emboss is formed on the entire surface.
  • the invention according to claim 5 is the water-decomposable sheet according to claim 4,
  • the emboss is With the first embossing, It has the 2nd embossing which is arranged around the 1st embossing, and has the shape of the bulging part which differs from the 1st embossing.
  • the invention according to claim 6 is the water-decomposable sheet according to claim 5,
  • the first embossing is arranged in a rhombus lattice.
  • the invention according to claim 7 is the water-decomposable sheet according to claim 5 or 6,
  • the second embossing is arranged between the two first embossings.
  • the invention according to claim 8 is the water-decomposable sheet according to any one of claims 5 to 7,
  • the first embossing and the second embossing are in contact with each other to form an embossing.
  • FIG. 10 is a BB end view of FIG. 9.
  • FIG. 10 is a CC end view of FIG. 9.
  • the water-decomposable sheet according to the present invention will be described using the toilet cleaner 100 as an example, but the water-decomposable sheet according to the present invention is a wet tissue impregnated with a chemical solution for wiping purposes other than the toilet cleaner. Is also included. Further, the paper conveyance direction at the time of manufacturing the toilet cleaner 100 will be described as the Y direction (vertical direction), and the direction orthogonal to the conveyance direction will be described as the X direction (lateral direction).
  • the toilet cleaner 100 is obtained by plying (stacking) a plurality of (for example, two) base papers, and is impregnated with a predetermined chemical solution. Moreover, as shown in FIG. 1, two types of embossing EM11 and EM12 are given to the whole sheet
  • the contact area between the two embossing EM11 and such cleaning object caused by EM12 is, 100 mm 2 per is preferably 15 mm 2 ⁇ 30 mm 2 approximately.
  • the embossed EM11 by arranging the embossed EM11 to be a rhombus lattice, it is possible to reduce wiping unevenness as compared with the case where the embossed EM11 is disposed in a square lattice or a rectangular lattice. Further, the embossing EM12 is disposed between the embossing EM11.
  • the toilet cleaner 100 is folded in half at the center in the longitudinal direction (Y direction) by being folded. Then, it is stored in a folded plastic case, packaging film, etc. in a folded state, and is expanded and used as needed during use. Note that the method of folding the toilet cleaner 100 is not limited to two, and may be, for example, four or eight.
  • the toilet cleaner 100 of the present embodiment is composed of a water-decomposable fiber assembly so that it can be discarded as it is in a toilet bowl after the toilet is cleaned.
  • mixed fibers of hardwood bleached kraft pulp (LBKP) and softwood bleached kraft pulp (NBKP) are used.
  • LLKP hardwood bleached kraft pulp
  • NNKP softwood bleached kraft pulp
  • the component ratio of the hardwood bleached kraft pulp exceeds 50% by weight, that is, the blending ratio of the softwood bleached kraft pulp to the hardwood bleached kraft pulp is less than 1/1.
  • the component ratio of the hardwood bleached kraft pulp exceeds 60% by weight, that is, the blending ratio of the softwood bleached kraft pulp to the hardwood bleached kraft pulp is less than 2/3. Things can be raised.
  • CMC carboxymethyl cellulose
  • the toilet cleaner 100 of the present embodiment is impregnated with a predetermined chemical solution.
  • a predetermined chemical solution Specifically, in addition to an aqueous cleaning agent, a fragrance, an antiseptic, a disinfectant, a paper strength enhancer, an organic solvent, and the like.
  • a predetermined chemical solution containing an auxiliary agent is impregnated.
  • the chemical solution is preferably impregnated in an amount of 150 to 300% by weight based on the weight of the base paper sheet that is the base material of the toilet cleaner 100.
  • aqueous cleaning agent a surfactant or a lower or higher (aliphatic) alcohol can be used.
  • flavor 1 type or several types can be suitably selected and used out of oil-based fragrance
  • preservative for example, parabens such as methyl paraben, ethyl paraben, propyl paraben and the like can be used.
  • a disinfectant for example, benzalkonium chloride, chlorhexidine gluconate, popidone iodine, ethanol, benzilium cetyl oxide, triclosan, chlorxylenol, isopropylmethylphenol and the like can be used.
  • the paper strength enhancer crosslinking agent
  • boric acid various metal ions, and the like can be used.
  • organic solvent polyhydric alcohols such as glycol (divalent), glycerin (trivalent), and sorbitol (tetravalent) can be used.
  • at least a trihydric or higher polyhydric alcohol such as glycerin or sorbitol is used as the organic solvent.
  • the trihydric or higher polyhydric alcohol is preferably impregnated in an amount of 1 to 20% by weight based on the weight of the base paper sheet.
  • the upper limit of the content is set to 20% by weight in order to suppress a decrease in yield due to excessive increase in the viscosity of the chemical solution.
  • the above-mentioned adjuvants for the components of the chemical solution can be appropriately selected, and components that perform other functions may be included in the chemical solution as necessary.
  • the bulging portion PR21 has a curved shape.
  • the embossing EM12 has a bulged portion PR22 having a planar shape.
  • the embossing EM12 is arrange
  • the two types of embosses EM11 and EM12 formed in this way can increase the contact area with the object to be cleaned, the hardness of the toilet cleaner 100 is reduced and the wiping performance is improved.
  • the toilet cleaner 100 is powered during wiping work.
  • the contact area is increased for the first time. Therefore, the contact area is increased, and the flexibility is improved due to the deformation of each emboss.
  • the contact area CN31 generated by the deformation of the emboss EM11 due to the force applied to the toilet cleaner 100 during the wiping operation occurs discretely in the vicinity of the emboss EM11.
  • the contact area CN32 generated by the deformation of the embossing EM11 and EM12 due to the force applied to the toilet cleaner 100 during the wiping operation is It can be seen that the contact area CN31 of FIG. 3A increases.
  • embossing EM11 and EM12 can obtain the effect of normal embossing similarly, and can improve the texture, absorbability, bulkiness, etc. of a toilet cleaner. Furthermore, the continuous embossing EM21 can also obtain the effect of the appearance by giving embossing similarly to normal embossing.
  • FIG. 4 is a flowchart showing a method for manufacturing the toilet cleaner 100.
  • FIG. 5 is a schematic diagram of a solution application facility that applies a binder solution containing a water-soluble binder to the base paper sheet of the toilet cleaner 100.
  • FIG. 6 is a schematic diagram of a processing facility for processing the base paper sheet to which the binder solution is applied by the solution application facility shown in FIG.
  • a paper making process (S1) for making a paper as a base paper is performed by a paper machine (not shown).
  • continuous dry base paper 1 ⁇ / b> A fed out from a plurality of (for example, two) primary raw rolls 1, 1 each wound up a base paper that has been made, A ply processing step (S2) for plying 1A to form a ply continuous sheet 1B, a solution application step (S3) for applying a binder solution to the ply continuous sheet 1B to form a continuous sheet 1C, and drying the continuous sheet 1C A drying process (S4) and a slit / winding process (S5) for slitting and winding the dried continuous water-decomposable sheet 1D are performed.
  • the number of primary rolls can be changed as long as there are two or more. However, in the following description, an example of using two primary rolls will be described.
  • the continuous water-decomposable sheet 1 ⁇ / b> D fed from the secondary raw roll 11 wound in the slit / winding step (S ⁇ b> 5) is embossed.
  • An embossing process (S6) and a finishing process (S7) for finishing the embossed sheet 1E that has been embossed are performed. Details of each process will be described later.
  • a raw paper sheet is formed by papermaking using a known wet papermaking technique. That is, after making the papermaking raw material into a wet paper state, it is dried by a dryer or the like to form a base paper sheet such as thin paper or crepe paper.
  • a raw material of the base paper sheet for example, known virgin pulp, waste paper pulp and the like can be used, and at least pulp fibers are included.
  • a blend of LBKP and NBKP in an appropriate ratio is particularly suitable.
  • rayon fiber, synthetic fiber, etc. may contain as fibers other than a pulp fiber.
  • the base paper sheet of the present invention contains an anionic acrylamide polymer (hereinafter referred to as “anionic PAM”) as a flocculant.
  • anionic PAM is a polymer obtained by copolymerizing an acrylamide monomer and an anionic monomer.
  • the acrylamide monomer include acrylamide alone or a mixture of acrylamide and the following nonionic monomer copolymerizable with acrylamide.
  • Nonionic monomers copolymerizable with acrylamide include methacrylamide, N, N-dimethylacrylamide, N, N-diethylacrylamide, N-isopropylacrylamide, N-isopropylacrylamide, N-hydroxyethylacrylamide, diacetone.
  • Examples include acrylamide, acryloylmorpholine, N-acryloylpyrrolidine, N-acryloylpiperidine, N-vinylrolidone, N-vinylformamide, and N-vinylacetamide. These may be used alone or in combination of two or more.
  • the anionic monomer include acrylic acid, methacrylic acid, acrylamido-2-methylpropanesulfonic acid, itaconic acid, maleic acid, fumaric acid, and neutralized salts thereof.
  • a monomer such as styrene, acrylonitrile, (meth) acrylic acid ester, or the like may be blended as long as the water solubility of the anionic PAM is not impaired.
  • the addition amount of the anionic PAM is preferably about 10 to 1000 ppm.
  • the basis weight is preferably about 15 to 75 gsm.
  • the basis weight of the ply-processed sheet containing the water-soluble binder (continuous water-decomposable sheet 1D) is about 30 to 150 gsm.
  • the basis weight is based on JIS P 8124.
  • the continuous dry base paper 1A becomes a ply-processed hydrolyzed paper through a ply processing step (S2), a solution application step (S3), a drying step (S4), and a slit / winding step (S5), which will be described later.
  • the toilet cleaner 100 is processed through an embossing process (S6) and a finishing process (S7).
  • the ply processing step (S2) of this embodiment will be described.
  • the continuous dry base papers 1A and 1A continuously fed from the raw roll 1 are ply processed along the continuous direction to form a ply continuous sheet 1B. It is supplied to the mating unit 2.
  • the overlapping portion 2 is composed of a pair of rolls, and plies each continuous base paper 1A, 1A to form a ply continuous sheet 1B subjected to ply processing.
  • the continuous dry base papers 1A and 1A may be lightly fastened with pin embossing (contact embossing) so that they are not easily displaced.
  • the binder solution contains carboxymethyl cellulose (CMC) as a water-soluble binder.
  • CMC carboxymethyl cellulose
  • the concentration of carboxymethylcellulose in the binder solution is 1 to 30% by weight, preferably 1% by weight or more and less than 4% by weight.
  • the degree of etherification of CMC is desirably 0.6 to 2.0, particularly 0.9 to 1.8, and more preferably 1.0 to 1.5.
  • the expression of water disintegration and wet paper strength is very good.
  • CMC can use a water swelling thing. This demonstrates the function of tying together the fibers constituting the sheet while remaining unswelled by crosslinking of specific metal ions in the chemical solution, and can exhibit strength as a wiping sheet that can withstand cleaning and wiping operations.
  • Ingredients other than carboxymethylcellulose in the binder solution include polyvinyl alcohol, starch or derivatives thereof, hydroxypropylcellulose, sodium alginate, tolton gum, guar gum, xanthan gum, gum arabic, carrageenan, galactomannan, gelatin, casein, albumin, pull plan, poly Examples thereof include binder components such as ethylene oxide, viscose, polyvinyl ethyl ether, polyacrylic acid soda, polymethacrylic acid soda, polyacrylamide, hydroxylated derivatives of polyacrylic acid, and polyvinylpyrrolidone / vinylpyrrolidone vinyl acetate copolymer.
  • binder components such as ethylene oxide, viscose, polyvinyl ethyl ether, polyacrylic acid soda, polymethacrylic acid soda, polyacrylamide, hydroxylated derivatives of polyacrylic acid, and polyvinylpyrrolidone / vinylpyrrolidone vinyl acetate copolymer.
  • a water-soluble binder having a carboxyl group is an anionic water-soluble binder that easily forms a carboxylate in water.
  • examples thereof include polysaccharide derivatives, synthetic polymers, and natural products.
  • the polysaccharide derivative include a salt of carboxymethyl cellulose, carboxyethyl cellulose or a salt thereof, carboxymethylated denven or a salt thereof, and an alkali metal salt of carboxymethyl cellulose is particularly preferable.
  • Examples of the synthetic polymer include a polymer or copolymer salt of an unsaturated carboxylic acid, a salt of a copolymer of an unsaturated carboxylic acid and a monomer copolymerizable with the unsaturated carboxylic acid, and the like.
  • Examples of the unsaturated carboxylic acid include acrylic acid, methacrylic acid, itaconic acid, crotonic acid, maleic anhydride, maleic acid, and fumaric acid.
  • Examples of monomers that can be copolymerized with these include esters of these unsaturated carboxylic acids, vinyl acetate, ethylene, acrylamide, and vinyl ether.
  • Particularly preferred synthetic polymers are those using acrylic acid or methacrylic acid as the unsaturated carboxylic acid.
  • polyacrylic acid polymethacrylic acid, acrylic acid-methacrylic acid copolymer salt, acrylic acid or methacrylic acid.
  • examples thereof include a salt of a copolymer of an acid and an alkyl acrylate or an alkyl methacrylate.
  • natural products include sodium alginate, xanthan gum, gellan gum, tarragant gum, pectin and the like.
  • the solution application step (S3) of this embodiment will be described.
  • the solution application step (S3) as shown in FIG. 5, two fluids are formed on both outer surfaces of the ply continuous sheet 1B (the surfaces where the continuous dry base papers 1A and 1A do not face each other when the continuous dry base papers 1A and 1A are plyed).
  • the above-mentioned binder solution is sprayed by the spray nozzles 3 and 3 of the system. Thereby, the water-soluble binder contained in a binder solution can be added to the ply continuous sheet 1B.
  • the binder solution for example, with respect to the outer surfaces (surfaces where the sheets do not face each other) of the continuous dry base papers 1A and 1A fed out from the primary raw rolls 1 and 1 described above, respectively. You may make it produce
  • the two-fluid spray nozzle 3 is a spray nozzle that mixes and sprays compressed air and liquid divided into two systems, compared to a one-fluid spray nozzle that sprays compressed liquid alone, The liquid can be sprayed finely and uniformly.
  • a binder solution viscosity 400 to 1200 MPa.s
  • injection pressure 1.5 MPa or more
  • a binder solution (viscosity 400 to 1200 MPa.s) is applied to the outer surface of each ply-processed ply continuous sheet 1B at an injection pressure of 1.5 MPa or less.
  • the binder solution is easily impregnated in the thickness direction of the sheet, and the binder solution is easily applied uniformly on the sheet surface.
  • the drying step (S4) of this embodiment will be described.
  • the insoluble liquid in the binder solution of the continuous sheet 1C is evaporated to fix the active ingredient, particularly CMC, to the fibers.
  • the amount of penetration of the binder solution decreases from the outer surface (front surface and back surface) of the continuous sheet 1C toward the inner side in the thickness direction, so that the fixing amount of CMC decreases toward the inner side in the thickness direction. Will be.
  • the cross-linking reaction hardly occurs as it goes inward in the thickness direction, and since there are many voids, the chemical solution is confined inside the sheet. be able to. Thereby, the toilet cleaner 100 obtained can be made hard to dry. In addition, since many CMC cross-linking reactions occur in the vicinity of the outer surface of the continuous sheet 1C, the surface strength of the obtained toilet cleaner 100 can be strengthened.
  • the drying equipment 4 a hooded dryer equipment that blows hot air on the continuous sheet 1C to dry it can be used. In order to make the sheets more closely contact each other, a press roll or a turn roll may be installed, and the continuous sheet 1C may be passed through the press roll or the turn roll before the drying step (S4).
  • an infrared irradiation facility may be used as the drying facility.
  • a plurality of infrared irradiation units are arranged in parallel in the conveying direction of the continuous sheet 1C, and drying is performed by irradiating the continuous sheet 1C to be conveyed with infrared rays. Since moisture is generated by infrared rays and dried, uniform drying is possible as compared with a dryer using hot air, and wrinkles can be prevented from occurring in the subsequent slit / winding process.
  • the slit / winding step (S5) of this embodiment will be described.
  • the slit / winding step (S5) in order to use the ply-processed continuous water-decomposable sheet 1D with an off-line processing machine, it is dried in the above-described drying step (S4) and the CMC is fixed.
  • the illustrated continuous water-decomposable sheet 1D is slit to a predetermined width by the slitter 5 while adjusting the tension, and wound by the winder facility 6.
  • the winding speed is appropriately determined in consideration of the ply processing step (S2), the solution application step (S3), and the drying step (S4).
  • the continuous water-decomposable sheet 1D subjected to the ply process is pressure-bonded, whereby the continuous water-decomposable sheet 1D is more integrated and becomes a sheet corresponding to one sheet.
  • the embossing process (S6) of this embodiment will be described.
  • the embossing roll 12 has an embossing process that forms a predetermined shape on the entire surface of the continuous water-decomposable sheet 1D fed from the secondary raw roll 11 by the embossing roll 12. Applied. This embossing is performed for the purpose of improving the strength, bulkiness, wiping property and the like of the sheet, as well as the design.
  • the finishing process (S7) of this embodiment will be described.
  • the finishing process (S7) as shown in FIG. 6, in the finishing equipment 13, the embossed sheet 1E is cut, the cut sheets are folded, and the chemicals are applied to the folded sheets. Impregnation and packaging of each sheet impregnated with the chemical solution are performed in a series of flows.
  • the cross-linking agent contained in the chemical solution is preferably a polyvalent metal ion.
  • the use of one or more polyvalent metal ions selected from the group consisting of alkaline earth metals, manganese, zinc, cobalt, and nickel allows the fibers to be sufficiently bonded to withstand use.
  • the toilet cleaner 100 is manufactured through the above steps.
  • the blending ratio of softwood bleached kraft pulp with respect to hardwood bleached kraft pulp is less than 1/1, and by increasing the blending ratio of hardwood bleached kraft pulp as compared with softwood bleached kraft pulp It is possible to reduce the gap between the fibers and suppress the transpiration of moisture in the chemical solution.
  • a polyhydric alcohol having a valence of 3 to 20% by weight is impregnated with respect to the weight of the base paper sheet, the sheet can be made to be viscous and water evaporation in the chemical solution can be further suppressed. Can do.
  • the base paper sheet (continuous sheet 1C) is in a state in which the content of CMC is increased from the inner side in the thickness direction of the base paper sheet toward the front and back surfaces, the base paper sheet is impregnated with a chemical solution containing a crosslinking agent.
  • the cross-linking reaction hardly occurs as it goes inward in the thickness direction, and there are many voids, so that the chemical solution can be confined inside the sheet.
  • the toilet cleaner 100 obtained can be made hard to dry.
  • the surface strength of the obtained toilet cleaner 100 can be strengthened.
  • the embossed EM11 in which the bulging part PR21 has a curved shape and the embossing EM12 in which the bulging part PR22 has a flat shape are illustrated. It is not necessarily limited to this shape, for example, the bulging part of embossing EM11 and embossing EM12 may be a planar shape from which height differs. Further, for example, the bulging portion of the emboss EM 11 may be a flat shape, and the bulging portion of the emboss EM 12 may be a curved shape.
  • first embossing and second embossing there are two types of embossing (first embossing and second embossing) in which the shape of the bulging part is not the same shape, and the second embossing is arranged around the first embossing. If it exists, the shape of the bulging portion of each emboss may be any shape.
  • the embossed EM12 having a flat bulge is disposed between the embossed EM11 having a curved bulge, but the embossed EM11 intersects each other. Also good.
  • all the embosses EM11 and EM12 are convex toward the front side of the drawing in FIG.
  • the concave embosses EM11 and EM12 may be alternately arranged.
  • embosses EM11 and EM12 solid line portions convex in the front direction of FIG. 7 and embossments EM11 and EM12 (broken line portions) concave in the front direction of FIG.
  • embosses EM11 and EM12 solid line portions convex in the front direction of FIG. 7
  • embossments EM11 and EM12 broken line portions
  • the bulging portion PR21 of the emboss EM11 and the bulging portion PR22 of the EM12 are formed as a continuous embossing EM21 by closely adhering to each other.
  • the bulging portion PR21 and the bulging portion PR22 of the EM 12 may be close to each other but not closely attached.
  • the shape of the emboss EM 11 is exemplified as a circular shape or an elliptical shape, but the emboss shape may be any shape such as a square or a polygon.
  • the heights HT21 and HT22 of the bulging portions of the embosses EM11 and EM12 in FIG. 2 are preferably 0.40 mm to 0.75 mm, for example.
  • the surface is 3D measured with a digital microscope manufactured by Keyence, and the heights HT21 and HT22 of the bulges of the embosses EM11 and EM12 are measured.
  • the height is less than 0.40 mm, the friction at the time of wiping becomes strong and difficult to wipe, and if the height exceeds 0.75 mm, the shapes of the embosses EM11 and EM12 are liable to break during packaging. It looks bad.
  • the emboss pattern is not limited to the above-mentioned pattern, and may be an emboss pattern as shown in FIGS.
  • the concave portion e2 has a shape obtained by inverting the convex portion e1.
  • the convex portions e1 and the concave portions e2 are alternately arranged as an example, and this row forms an emboss pattern in which the rows are arranged in multiple rows and the convex portions e1 and the concave portions e2 in adjacent rows are shifted from each other by a half pitch. .
  • the convex portions e1 and the concave portions e2 are alternately formed both in the vertical direction and in the horizontal direction, so that the wiping property of dirt is improved compared to the embossed pattern in which the convex portions and the concave portions are arranged in a line.
  • the shape of the convex part e1 and the recessed part e2 is not specifically limited, Circular, an ellipse, a polygon etc. are used. It is good also as what combined each shape.
  • the present invention can be suitably used in the field of manufacturing a water-decomposable sheet.

Landscapes

  • Paper (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)

Abstract

Une feuille pouvant se désintégrer dans l'eau qui comprend une feuille de papier de base, un liant soluble dans l'eau étant ajouté à ladite feuille de papier de base, est imprégnée d'une solution chimique, la feuille de papier de base étant préparée par traitement de l'épaisseur de multiples feuilles de papier de base, présentant un poids de base (metsuke) compris entre 30 et 150 g/m2, et présentant un rapport de composition de pâte de bois résineux à pâte de feuillus de moins de 1/1; la solution chimique contient un agent de réticulation pour réticuler le liant soluble dans l'eau et un alcool trihydrique ou supérieur; et la feuille de papier de base est imprégnée de 1 à 20 % en poids de l'alcool trihydrique ou supérieur sur la base du poids.
PCT/JP2016/060510 2015-05-29 2016-03-30 Feuille pouvant se désintégrer dans l'eau Ceased WO2016194460A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN201680025988.4A CN107532389A (zh) 2015-05-29 2016-03-30 水解性片材
KR1020177032368A KR102510363B1 (ko) 2015-05-29 2016-03-30 수해성 시트
EP16802897.5A EP3305983B1 (fr) 2015-05-29 2016-03-30 Feuille pouvant se désintégrer dans l'eau
US15/576,931 US20180146834A1 (en) 2015-05-29 2016-03-30 Hydrolysable sheet

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2015110839A JP6096245B2 (ja) 2015-05-29 2015-05-29 水解性シート
JP2015-110837 2015-05-29
JP2015-110839 2015-05-29
JP2015110837A JP6096244B2 (ja) 2015-05-29 2015-05-29 水解性シート

Publications (1)

Publication Number Publication Date
WO2016194460A1 true WO2016194460A1 (fr) 2016-12-08

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PCT/JP2016/060510 Ceased WO2016194460A1 (fr) 2015-05-29 2016-03-30 Feuille pouvant se désintégrer dans l'eau

Country Status (5)

Country Link
US (1) US20180146834A1 (fr)
EP (1) EP3305983B1 (fr)
KR (1) KR102510363B1 (fr)
CN (1) CN107532389A (fr)
WO (1) WO2016194460A1 (fr)

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CN110708995A (zh) * 2017-06-09 2020-01-17 大王制纸株式会社 清扫用片材
CN110719747A (zh) * 2017-06-16 2020-01-21 大王制纸株式会社 清扫用片材
WO2021065423A1 (fr) * 2019-09-30 2021-04-08 大王製紙株式会社 Feuille hydrolysable

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EP3278699B1 (fr) 2015-03-31 2020-03-25 Daio Paper Corporation Papier domestique et feuille pouvant se désintégrer dans l'eau
KR102510361B1 (ko) * 2015-05-29 2023-03-14 다이오세이시가부시끼가이샤 수해성 시트
JP6470236B2 (ja) * 2016-08-26 2019-02-13 大王製紙株式会社 水解性シート及び当該水解性シートの製造方法
JP6211160B1 (ja) * 2016-09-30 2017-10-11 大王製紙株式会社 水解性シート
JP7116556B2 (ja) * 2018-02-28 2022-08-10 大王製紙株式会社 ティシュペーパー

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CN110708995A (zh) * 2017-06-09 2020-01-17 大王制纸株式会社 清扫用片材
US11382482B2 (en) 2017-06-09 2022-07-12 Daio Paper Corporation Cleaning sheet
CN110719747A (zh) * 2017-06-16 2020-01-21 大王制纸株式会社 清扫用片材
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WO2021065423A1 (fr) * 2019-09-30 2021-04-08 大王製紙株式会社 Feuille hydrolysable
JP2021055215A (ja) * 2019-09-30 2021-04-08 大王製紙株式会社 水解性シート
CN114423902A (zh) * 2019-09-30 2022-04-29 大王制纸株式会社 水解性片材
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US12037747B2 (en) 2019-09-30 2024-07-16 Daio Paper Corporation Water dispersible sheet

Also Published As

Publication number Publication date
EP3305983A1 (fr) 2018-04-11
KR20180013876A (ko) 2018-02-07
KR102510363B1 (ko) 2023-03-14
EP3305983A4 (fr) 2018-04-25
CN107532389A (zh) 2018-01-02
US20180146834A1 (en) 2018-05-31
EP3305983B1 (fr) 2020-05-06

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