WO2018110059A1 - Feuille de papier et procédé de fabrication d'une feuille de papier - Google Patents

Feuille de papier et procédé de fabrication d'une feuille de papier Download PDF

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Publication number
WO2018110059A1
WO2018110059A1 PCT/JP2017/036884 JP2017036884W WO2018110059A1 WO 2018110059 A1 WO2018110059 A1 WO 2018110059A1 JP 2017036884 W JP2017036884 W JP 2017036884W WO 2018110059 A1 WO2018110059 A1 WO 2018110059A1
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Prior art keywords
sheet
papermaking
papermaking sheet
flow direction
value
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PCT/JP2017/036884
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English (en)
Japanese (ja)
Inventor
井出　純一
弘明 井出
博樹 唐金
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株式会社ダイセル
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=62558821&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2018110059(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by 株式会社ダイセル filed Critical 株式会社ダイセル
Priority to CN201780077156.1A priority Critical patent/CN110073055B/zh
Priority to LTEP17881628.6T priority patent/LT3556937T/lt
Priority to ES17881628T priority patent/ES2861724T3/es
Priority to KR1020197012915A priority patent/KR102193242B1/ko
Priority to EP17881628.6A priority patent/EP3556937B1/fr
Publication of WO2018110059A1 publication Critical patent/WO2018110059A1/fr

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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
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/02—Synthetic cellulose fibres
    • D21H13/06—Cellulose esters
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/062—Use of materials for tobacco smoke filters characterised by structural features
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/08—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent
    • A24D3/10—Use of materials for tobacco smoke filters of organic materials as carrier or major constituent of cellulose or cellulose derivatives
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
    • A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
    • A24D3/06—Use of materials for tobacco smoke filters
    • A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive
    • 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
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
    • 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
    • D21H27/40—Multi-ply at least one of the sheets being non-planar, e.g. crêped

Definitions

  • the present invention relates to a papermaking sheet excellent in processability and production efficiency of a processed product, and a manufacturing method thereof.
  • Cellulose ester compounds typified by cellulose acetate are safe and excellent natural polymer compounds with good processability, and are widely used in clothing fibers, various plastics, cigarette filters, and the like.
  • Cellulose ester compounds are made from cellulose, which is the most massive plant resource (biomass) produced on earth, such as wood pulp and cotton. The use of chemical fibers and plastics as raw materials is expected to expand.
  • Patent Document 1 discloses a technique for manufacturing a papermaking sheet including cellulose ester short fibers, pulp fibers, and a binder. Such a papermaking sheet can be used as a material for a processed product such as a cigarette filter as disclosed in Patent Documents 2 and 3, for example.
  • the papermaking sheet is continuously manufactured in a strip shape using, for example, a wet papermaking machine, slitted to a necessary width, and wound in a roll shape.
  • the wound papermaking sheet is fed out in a processing apparatus and continuously processed while being conveyed at a predetermined conveyance speed.
  • the paper sheet In the case of continuously producing a processed product by feeding a wound paper sheet, the paper sheet may be damaged if a certain tension or more is applied to the paper sheet in the conveying direction. For this reason, the processability of a papermaking sheet falls and it may become difficult to increase the conveyance speed of a papermaking sheet and to improve the manufacturing efficiency of a processed product.
  • an object of the present invention is to prevent damage to a papermaking sheet and to improve the manufacturing efficiency of the processed product when a processed product is manufactured using a papermaking sheet containing cellulose ester short fibers.
  • a papermaking sheet includes cellulose ester short fibers, pulp fibers, and a binder, and a plurality of crepes are formed of the cellulose ester short fibers and the pulp fibers. It extends along an orthogonal direction orthogonal to the flow direction and is arranged in the flow direction.
  • a plurality of crepes (continuous or discontinuous wrinkles) extending in the orthogonal direction perpendicular to the flow direction of the cellulose ester short fiber and the pulp fiber are formed on the papermaking sheet. Therefore, when manufacturing a processed product using a papermaking sheet while conveying the papermaking sheet in the flow direction, the papermaking sheet expands in the flow direction when tension is applied to the papermaking sheet in the flow direction. Thereby, damage of a papermaking sheet can be prevented and the fall of the workability of a papermaking sheet can be prevented. Further, by preventing the papermaking sheet from being damaged by the tension extending in the flow direction, it is possible to increase the transport speed of the papermaking sheet in the processing apparatus and improve the manufacturing efficiency of the processed product.
  • the papermaking sheet may be formed in a strip shape with the flow direction as a longitudinal direction.
  • the crepe rate may be set to a value in the range of 5% to 35%. By setting the crepe rate to such a value, when the paper sheet is tensioned in the flow direction, it is possible to appropriately prevent the paper sheet from being damaged by stretching the paper sheet in the flow direction. .
  • the breaking elongation in the flow direction may be set to a value in the range of 10% to 70%. By setting the elongation at break to such a value, it is possible to satisfactorily prevent the papermaking sheet from being damaged when a tension is applied to the papermaking sheet in the flow direction.
  • the tensile strength in the flow direction may be set to a value in the range of 1.5 N / 25 mm width or more and less than 40 N / 25 mm width. Accordingly, when the paper sheet is wound in the flow direction, the paper sheet can be prevented from being broken by the tension in the flow direction on the paper sheet, and the workability of the paper sheet can be appropriately maintained.
  • the binder may be an alkali salt of a polysaccharide containing a carboxyl group.
  • the papermaking sheet may be a filter material for a cigarette filter.
  • the papermaking sheet is formed with a plurality of crepes extending in the orthogonal direction and arranged in the flow direction rather than in the flow direction, and has a wide area.By using the papermaking sheet as a filter material for a cigarette filter, A cigarette filter can be produced that has a rich and uniform fine space inside the cigarette filter and has a beautiful cut surface without unevenness.
  • the paper sheet manufacturing method includes a sheet body forming step of forming a sheet body including cellulose ester short fibers, pulp fibers, and a binder, and a plurality of crepes in the sheet body, A crepe forming step that extends along an orthogonal direction perpendicular to the flow direction of the cellulose ester short fibers and the pulp fibers and is arranged so as to be arranged in the flow direction.
  • the sheet body may be formed in a strip shape with the flow direction as the longitudinal direction.
  • the crepe rate may be set to a value in the range of 5% to 35%.
  • the tensile elongation in the flow direction may be set to a value in the range of 10% to 70% by setting the crepe rate to the value.
  • the tensile strength in the flow direction may be set to a value in the range of 1.5 N / 25 mm width or more and less than 40 N / 25 mm width.
  • an alkaline salt of a polysaccharide containing a carboxyl group may be used as the binder.
  • FIG. 1 is a diagram showing a papermaking sheet 1 according to the embodiment.
  • the papermaking sheet 1 contains cellulose ester short fibers, pulp fibers, and a binder.
  • the papermaking sheet 1 is manufactured in a belt shape by a papermaking machine 10 (see FIG. 2) and wound in a roll shape.
  • the crepe 1 a formed on the papermaking sheet 1 is schematically illustrated in a large size.
  • the roll-shaped paper sheet 1 is slit into a necessary width in a subsequent process, and is continuously fed out to be used for manufacturing a processed product.
  • the cellulose ester is, for example, cellulose acetate which is a representative cellulose ester.
  • the cellulose ester short fiber may be crimped.
  • the cellulose ester short fibers are preferably non-crimped fibers (non-crimped fibers).
  • the non-crimped fiber mentioned here includes not only a perfectly straight fiber but also a slightly curved fiber.
  • the non-crimped fiber is obtained by a general chemical fiber spinning technique (such as a dry spinning method, a wet spinning method, or a melt spinning method).
  • Non-crimped fibers can also be obtained by completely releasing and stretching the crimps applied in the spinning process by applying tension while heating with a heating means such as heated steam.
  • the cellulose ester short fiber is obtained by using a guillotine facility or a rotary cutter facility capable of adjusting the feeding interval and speed of the long fiber bundle obtained by the spinning step.
  • the step of shortening the cellulose ester fiber by the guillotine facility or the rotary cutter facility may be performed continuously with the spinning step.
  • the average fiber length of cellulose ester short fibers is, for example, a value in the range of 1 mm to 6 mm, preferably 1.5 mm to 5.0 mm. It can be set to a value in the range, more preferably in the range of 2.0 mm to 4.5 mm.
  • the average fiber diameter of the cellulose ester short fiber is, for example, a value in the range of 1.5 denier or more and 8.0 denier or less, preferably 2.0 denier or more and 7.0 denier or less, more preferably 2.5. It can be set to a value in the range from denier to 6.0 denier.
  • the cross-sectional shape of the cellulose ester short fiber is, for example, Y-shaped, but is not limited thereto.
  • the crimpability, average fiber length, average fiber diameter, and cross-sectional shape of the cellulose ester short fiber can be confirmed by hydrolyzing the papermaking sheet 1 and observing the hydrolyzate with a microscope.
  • the papermaking sheet 1 may contain fibers other than cellulose ester fibers and pulp fibers (for example, synthetic fibers and regenerated fibers).
  • Pulp fibers are intertwined with cellulose ester short fibers and bonded together. For this reason, the mechanical strength of the papermaking sheet 1 can be improved by using pulp fibers. Moreover, when manufacturing filter materials, such as a cigarette filter, using the papermaking sheet
  • pulp natural fibers such as wood and linter can be used as raw materials.
  • the wood When wood is used as a raw material for pulp, the wood may be either softwood or hardwood.
  • a chemical pulp such as a sulfite method or a kraft method is suitable as a pulping method.
  • chemical pulps kraft is used from the viewpoint of improving the strength of the papermaking sheet 1 with the same component composition ratio. Pulp is excellent.
  • the pulp may be any of bleached pulp, unbleached pulp, and a mixture of bleached and unbleached pulp. The pulp is used after being beaten by a conventional beater or crusher.
  • the weight ratio between the cellulose ester short fibers and the pulp fibers contained in the papermaking sheet 1 can be appropriately adjusted according to, for example, a processed product manufactured using the papermaking sheet 1. For example, when producing a cigarette filter using the papermaking sheet 1, the said weight ratio is adjusted with the smoke filtration performance calculated
  • the weight ratio M1 / M2 of the weight M1 of the cellulose ester short fibers and the weight M2 of the pulp fibers contained in the cigarette filter is, for example, 30/70 to 95/5, preferably 40/60 to 80/20, more preferably
  • the weight ratio between the cellulose ester short fibers and the pulp fibers contained in the papermaking sheet 1 can be adjusted so as to be 50/50 to 70/30.
  • the binder binds cellulose ester short fibers and pulp fibers.
  • a predetermined amount of a water-soluble polymer as the binder of the papermaking sheet 1, it is possible to achieve both strength and water disintegration during drying of the papermaking sheet 1.
  • a binder that can impart water decomposability to the papermaking sheet 1 is used.
  • the binder of this embodiment is an alkali metal salt of a water-soluble anionic polymer.
  • water-soluble anionic polymers include polysaccharides (polycarboxyl having a carboxyl group such as carboxymethyl C 2-3 alkyl cellulose such as carboxymethyl cellulose and carboxymethyl ethyl cellulose, carboxymethyl starch, and alginic acid; pectin, carrageenan, hyaluronic acid, And polysaccharides having a sulfo group such as chondroitin sulfate) and polyacrylic acid.
  • the binder of this embodiment is an alkali salt of a polysaccharide having a carboxyl group.
  • the papermaking sheet 1 contain a predetermined amount of an alkali metal salt of a water-soluble anionic polymer as a binder, in the dry state of the papermaking sheet 1, between cellulose ester short fibers, between pulp fibers, and these two types
  • the binding strength between the fibers can be increased by the binder, and the strength of the papermaking sheet 1 can be improved.
  • Acidic groups (carboxyl groups, sulfo groups, etc.) of water-soluble anionic polymers form salts with alkali metals.
  • the alkali metal is, for example, lithium, sodium, or potassium. Of these alkali metals, sodium is preferred.
  • An alkali metal may be single or 2 types or more.
  • the average degree of substitution of the carboxyl group (for example, carboxymethyl group) forming the alkali metal salt (2, 3 and 2 of glucose units constituting the polysaccharide) is, for example, a value in the range of 0.4 to 2.5, preferably a value in the range of 0.55 to 2.0, More preferably, it can be set to a value in the range of 0.65 to 1.5.
  • the alkali metal content of the papermaking sheet 1 is, for example, a value in the range of 2 ⁇ mol to 100 ⁇ mol, preferably a value in the range of 2 ⁇ mol to 90 ⁇ mol, more preferably a value in the range of 2 ⁇ mol to 87 ⁇ mol, particularly preferably per 1 g of the papermaking sheet. Can be set to a value in the range of 3 ⁇ mol to 75 ⁇ mol.
  • the water-soluble anionic polymer alkali metal salt content (molar amount of anionic group) of the papermaking sheet 1 may be the same as the alkali metal content (molar amount) of the papermaking sheet 1.
  • the water-soluble anionic polymer alkali metal salt content (molar amount of anionic group) of the papermaking sheet 1 is a value in the same range as described above per 1 g of the cigarette filter. (For example, a value in the range of 2 ⁇ mol or more and 100 ⁇ mol or less).
  • the binder may be other than the alkali metal salt of the water-soluble anionic polymer.
  • the basis weight of the papermaking sheet can be set, for example, to a value in the range of 10 g / m 2 to 60 g / m 2 , preferably to a value in the range of 15 g / m 2 to 50 g / m 2 .
  • the basis weight of the sheet 1 of the present embodiment is set to a value of 21g / m 2 or more 40 g / m 2 within the range of.
  • one or more additives may be added to the papermaking sheet 1.
  • the additive include, but are not limited to, at least one of a sizing agent, a stabilizer, a colorant, an oil agent, a yield improver, an antifoaming agent, and activated carbon.
  • a plurality of crepes are orthogonal to the flow direction (hereinafter also simply referred to as the flow direction) of the cellulose acetate short fibers and the pulp fibers (hereinafter also simply referred to as the orthogonal direction). And are arranged in the flow direction.
  • the plurality of crepes 1a extend in parallel to the orthogonal direction.
  • the flow direction referred to here is a substantial orientation direction (flow line) between the cellulose acetate short fibers and the pulp fibers.
  • the orientation of these fibers is such that the composition that is the raw material of the papermaking sheet 1 in the process of continuously producing the papermaking sheet 1 is compared with the conveyance speed of the metal meshing body 21 (see FIG. 2) in the papermaking machine 10. This is due to the low flow rate of the composition as it is fed to For this reason, the fibers in the composition are more oriented and deposited in the flow direction. That is, the flow direction coincides with the direction sent to the next process.
  • the strength and elongation of the papermaking sheet 1 are different between the flow direction and the orthogonal direction.
  • the tensile strength of a papermaking sheet is the largest in the flow direction. Accordingly, the flow direction and the orthogonal direction of the papermaking sheet 1 can be confirmed by observing the difference in tensile strength between the two different directions of the papermaking sheet 1 and the fiber orientation of the papermaking sheet 1 using a microscope.
  • the papermaking sheet 1 is formed in a strip shape with the flow direction as the longitudinal direction. By forming a plurality of crepes 1a on the papermaking sheet 1, the papermaking sheet 1 is given stretchability to expand and contract in the flow direction, and the surface area per unit length in the flow direction of the papermaking sheet 1 is increased. Yes.
  • orthogonal direction orthogonal to the flow direction is not limited to a direction strictly orthogonal to the flow direction. For example, an angle value within a range of 10 ° with respect to the orthogonal direction. Including the direction shifted by.
  • crepe rate R of the papermaking sheet 1 is set to a value in the range of 5% to 35%. This crepe rate R is expressed by Equation 1.
  • V1 is the peripheral speed of the heating roll 26 of the paper machine 10 when the paper sheet 1 is manufactured
  • V2 is the peripheral speed of the take-up reel 28 of the paper machine 10 when the paper sheet 1 is manufactured (FIG. 2).
  • the breaking elongation in the flow direction of the papermaking sheet 1 is set to a value in the range of 10% to 70%.
  • the paper sheet 1 has a tensile strength (N / 25 mm width) of, for example, a value in the range of 1.0 N / 25 mm width to 80 N / 25 mm width, preferably 1.5 N / 25 mm width to 40 N / 25 mm width. Can be set to a range value.
  • the tensile strength in the flow direction is set to a value in the range of 1.5 N / 25 mm width or more and less than 40 N / 25 mm width.
  • the tensile strength of the papermaking sheet 1 can be measured, for example, according to the method of JIS P8113.
  • the papermaking sheet 1 is conveyed while transporting the papermaking sheet 1 in the flow direction.
  • the papermaking sheet 1 extends in the flow direction. Thereby, damage to the papermaking sheet 1 can be prevented, and deterioration of workability of the papermaking sheet 1 can be prevented.
  • the papermaking sheet 1 can be hardly broken, the papermaking sheet 1 can be processed to have a fine three-dimensional structure by, for example, three-dimensionally processing the papermaking sheet 1 with a mold. Therefore, for example, a paper mask 1 can be used to manufacture a face mask having a three-dimensional structure.
  • the papermaking sheet 1 is formed in a strip shape with the flow direction as the longitudinal direction, when the papermaking sheet 1 wound in a roll shape is fed and conveyed continuously in the processing apparatus, the papermaking sheet 1 Even if tension is applied in the longitudinal direction (conveying direction), the papermaking sheet 1 is hardly damaged, and the manufacturing efficiency of the processed product can be further improved.
  • the crepe rate R of the papermaking sheet 1 is set to a value in the range of 5% to 35%, when the papermaking sheet 1 is tensioned in the flow direction, the papermaking sheet 1 extends in the flow direction. Thus, it is possible to appropriately prevent the papermaking sheet 1 from being damaged.
  • the breaking elongation in the flow direction of the papermaking sheet 1 is set to a value in the range of 10% to 70%, the papermaking sheet 1 is damaged when tension is applied to the papermaking sheet 1 in the flow direction. Can be prevented well.
  • the tensile strength in the flow direction of the papermaking sheet 1 is set to a value in the range of 1.5 N / 25 mm width or more and less than 40 N / 25 mm width, when the papermaking sheet 1 is wound in the flow direction, the papermaking sheet 1 In addition, it is possible to prevent the paper sheet 1 from being broken by the tension in the flow direction, and to appropriately maintain the workability of the paper sheet 1.
  • the binder is an alkali salt of a polysaccharide containing a carboxyl group
  • a processed product having high water decomposability can be produced using the papermaking sheet 1.
  • Examples of processed products using the papermaking sheet 1 include a makeup remover sheet (nonwoven fabric). Since this makeup removing sheet has a large surface area due to the plurality of crepes 1a, a higher makeup removing effect can be obtained as compared with a sheet having a flat surface.
  • the cellulose ester short fiber has higher lipophilicity than the existing material such as rayon fiber, a high makeup removing effect can be obtained even when the makeup agent contains an oil component.
  • the makeup removing sheet is improved in softness by the plurality of crepes 1a, it is easily deformed when touching the skin, and a good tactile sensation and low irritation can be obtained. Therefore, an excellent usability can be expected.
  • examples of the processed product using the papermaking sheet 1 include a cleaning sheet (nonwoven fabric). Since this cleaning sheet has a large surface area due to the plurality of crepes 1a and is less crushed, it can adsorb dirt and foreign matter on the object and can be easily wiped off. Moreover, since this cleaning sheet has good stretchability, it is difficult to break, and the cleaning sheet can be efficiently tracked by following the surface of the object.
  • a papermaking sheet 1 having water decomposability is produced using an alkaline salt of a polysaccharide containing a carboxyl group in the binder, processed products such as cleaning sheets produced using this papermaking sheet 1 are hydrolyzed after use. Can be processed.
  • the cellulose ester is a natural compound based on the same cellulose as the pulp, it is known that the cellulose ester is decomposed by microorganisms over a relatively long time after being dispersed in water. Therefore, the cleaning sheet using the papermaking sheet 1 can be disassembled in a natural environment.
  • examples of processed products using the papermaking sheet 1 include a cigarette filter.
  • this cigarette filter is manufactured by forming the papermaking sheet 1 into a cylindrical shape, winding the outer periphery thereof with a wrapping paper, and cutting it into a predetermined length.
  • the papermaking sheet 1 in this case is a filter material for a cigarette filter.
  • the papermaking sheet 1 Since the papermaking sheet 1 has a large surface area due to the formation of a plurality of crepes 1a, the papermaking sheet 1 is used as a filter material for a cigarette filter, thereby forming a rich and uniform fine space inside the cigarette filter. it can. Further, by forming the fine space uniformly, a cylindrical cigarette filter having a beautiful cut surface without unevenness can be manufactured. Thereby, the cigarette filter which has a low ventilation resistance (Pressure ⁇ Drop: PD) and can be easily sucked and can effectively capture smoke particles can be obtained with stable quality using the papermaking sheet 1.
  • PD ventilation resistance
  • the cigarette filter can be manufactured satisfactorily by adjusting the stuffing weight of the papermaking sheet 1.
  • the air resistance of the cigarette filter can be adjusted more finely by further subjecting the paper sheet 1 formed with the plurality of crepes 1a to three-dimensional processing such as unevenness extending in a direction intersecting with the plurality of crepes 1a. It is.
  • the papermaking sheet 1 since the pulp fiber and the cellulose acetate fiber which is representative of a cellulose ester are conventionally used as a cigarette filter material, the papermaking sheet 1 has a high consumer acceptance as a cigarette filter material. Yes. Moreover, in the cigarette filter manufactured using the papermaking sheet 1, phenols and the like, which are harmful compounds in the smoke component, can be efficiently adsorbed to the cellulose acetate fiber, and moisture can be efficiently adsorbed to the pulp fiber. Can do.
  • seat 1 which has water disintegration property using a water-soluble binder is manufactured, and a cigarette filter is manufactured using this papermaking sheet
  • examples of processed products using the papermaking sheet 1 include sanitary articles such as disposable diapers, napkins, and masks.
  • sanitary goods since the papermaking sheet 1 has high air permeability, stuffiness and stickiness are suppressed at the time of wearing, and an excellent wearing feeling can be exhibited. Therefore, the papermaking sheet 1 is also suitable as a material for such sanitary products.
  • FIG. 2 is a schematic diagram of the paper machine 10 according to the embodiment.
  • the paper machine 10 is a long web paper machine as an example.
  • the paper machine 10 includes a composition adjustment part 11, a wire part 12, a press part 13, a dryer part 14, and a take-up reel 28.
  • Each of the composition adjustment part 11, the wire part 12, the press part 13, and the dryer part 14 has a well-known structure.
  • the upstream side and the downstream side mentioned below refer to the upstream side and the downstream side in the conveying direction of the composition, the sheet body 30, and the paper sheet 1 in the paper machine 10, respectively.
  • the composition adjustment part 11 is arranged on the most upstream side of the paper machine 10.
  • the composition adjustment part 11 adjusts a liquid composition (slurry) that is a raw material of the papermaking sheet 1.
  • the composition adjustment part 11 has a storage tank 20 for storing the composition.
  • the wire part 12 is disposed on the downstream side of the composition adjustment part 11.
  • the wire part 12 spreads the composition supplied from the storage tank 20 in a sheet shape, dehydrates it, and transports it in the transport direction.
  • the wire part 12 includes a wire mesh body 21 and a plurality of transport rolls 22.
  • the metal mesh body 21 is configured by forming a net made of a plurality of wires into an endless belt shape.
  • the plurality of transport rolls 22 rotate the wire mesh body 21.
  • the fiber concentration of the composition supplied from the storage tank 20 to the wire part 12 the supply speed of the composition supplied from the storage tank 20 to the wire part 12, and the conveyance speed of the composition by the wire mesh body 21
  • the basis weight of the papermaking sheet 1 is adjusted by adjusting at least one of them.
  • the composition supplied from the storage tank 20 to the wire part 12 is referred to as a sheet body 30.
  • the press part 13 is disposed on the downstream side of the wire part 12.
  • the press part 13 further dehydrates the sheet body 30 that has passed through the wire part 12 while being conveyed in the conveying direction.
  • the press part 13 includes a plurality of felt bodies 23, a plurality of transport rolls 24, and at least one press roll 25.
  • the felt body 23 is formed by forming a belt-like felt material into an endless belt shape.
  • the plurality of transport rolls 24 rotate the felt body 23.
  • the press roll 25 is pivotally supported at a position facing the peripheral surface of the transport roll 24 via the felt body 23.
  • the dryer part 14 is arranged on the downstream side of the press part 13.
  • the dryer part 14 dries while conveying the sheet body 30 that has passed through the press part 13 in the conveying direction.
  • the dryer part 14 has at least one heating roll (including a Yankee dryer) 26.
  • the heating roll 26 is rotated at a peripheral speed V1.
  • the take-up reel 28 is arranged on the downstream side of the dryer part 14.
  • the take-up reel 28 takes up the paper sheet 1 obtained by being separated from the peripheral surface of the heating roll 26 in a roll shape.
  • the heating roll 26 is rotated at a peripheral speed V2.
  • the paper machine 10 is not limited to the long web paper machine, but may be of other types.
  • the paper machine 10 may be, for example, a circular net paper machine.
  • FIG. 3 is a manufacturing process diagram illustrating a manufacturing process of the papermaking sheet 1 according to the embodiment.
  • raw material adjustment process S1, wire process S2, press process S3, dry process S4, crepe formation process S5, winding process S6, and slitter process S7 are performed sequentially.
  • steps S1 to S6 are sequentially performed using the paper machine 10.
  • the composition is adjusted by uniformly dispersing cellulose ester short fibers, pulp fibers, and a binder in water.
  • the adjusted composition is temporarily stored in the storage tank 20.
  • the raw material adjustment step S1 may include a beating step for adjusting the entanglement of the fibers.
  • a beating process for example, a known refiner is used, and the fibers in the composition are mechanically beaten and ground in the presence of water. This causes the fiber to be cut or torn apart. As a result, the disaggregation of the fibers is advanced, the hydration and swelling of the fibers are increased, and the entanglement of the fibers after papermaking is increased.
  • the composition stored in the storage tank 20 is developed on the wire mesh body 21 of the wire part 12 to form the sheet body 30.
  • the several conveyance roll 22 is rotated and the sheet
  • seat body 30 is conveyed with a metal mesh body 21 in a conveyance direction. A part of the moisture in the sheet body 30 is removed through the gaps in the wire mesh body 21. Thereby, the sheet body 30 is dehydrated to some extent.
  • the sheet body 30 that has passed the wire part 12 is placed on the felt body 23, the plurality of transport rolls 24 are rotated, and the sheet body 30 is transported together with the felt body 23 in the transport direction. A part of the moisture of the sheet body 30 is absorbed by the surface of the felt body 23. Thereby, the sheet body 30 is further dehydrated. And the sheet body 30 is passed between the felt body 23 and the press roll 25, the sheet body 30 is pressurized in the thickness direction, and the sheet body 30 is further dehydrated.
  • the pressing step S3 only one set of felt bodies 23 may be used, or two or more sets of felt bodies 23 arranged continuously in the transport direction may be used.
  • a press machine that presses the sheet body 30 or a suction dehydration facility that forcibly dehydrates the sheet body 30 may be used.
  • the sheet body 30 that has passed through the press part 13 is transported in the transport direction while contacting the peripheral surface of the heating roll 26. At this time, the heat of the peripheral surface of the heating roll 26 is transferred to the sheet body 30, and the sheet body 30 is heated and dried.
  • a heating device such as a hot air hood may be used together with the heating roll 26.
  • the sheet body 30 is peeled off from the peripheral surface of the heating roll 26 using, for example, a doctor blade 27. Thereby, when the sheet
  • the longitudinal direction of the doctor blade 27 coincides with the axial direction of the heating roll 26.
  • a plurality of crepes 1a extending in the orthogonal direction and arranged in the flow direction are formed on the sheet body 30.
  • the crepe rate R of the papermaking sheet 1 to be manufactured is set to a value in the range of 5% to 35%. Further, by setting the crepe rate R to such a value, the breaking elongation in the flow direction of the papermaking sheet 1 to be manufactured is set to a value in the range of 10% to 70%.
  • the method of adjusting the compounding ratio of multiple types of fibers in the raw material adjustment step S1 the method of adjusting the beating degree to adjust the fiber entanglement, the method of adjusting the basis weight (total fiber amount) in the wire step S2, and
  • the tensile strength in the flow direction of the papermaking sheet 1 is set to a predetermined value by at least one of the methods for adjusting the crepe rate R in the crepe forming step S5.
  • the tensile strength in the flow direction of the papermaking sheet 1 is set to a value in the range of 1.5 N / 25 mm width or more and less than 40 N / 25 mm width.
  • a belt-like papermaking sheet 1 having a flow direction as a longitudinal direction (conveying direction) is obtained.
  • the papermaking sheet 1 is wound in a roll shape by the winding reel 28.
  • the slitter step S7 the paper sheet 1 wound in a roll shape is rewinded, slit (cut) to a predetermined width, and wound again. Thereby, the papermaking sheet 1 used as the roll-shaped product is obtained.
  • seat 1 of this embodiment is the sheet body formation process (here raw material adjustment process S1, wire process S2, forming the sheet body 30 containing a cellulose ester short fiber, a pulp fiber, and a binder.
  • the sheet body 30 is formed in a strip shape with the flow direction as the longitudinal direction (conveyance direction).
  • the crepe rate R of the papermaking sheet 1 is set to a value in the range of 5% to 35%.
  • the tensile elongation in the flow direction of the papermaking sheet 1 is set to the value of the range of 10% or more and 70% or less by setting the crepe rate R to the said value.
  • a papermaking sheet by adjusting at least one of the mixing ratio of the cellulose ester short fiber and the pulp fiber and the binder, the basis weight, the beating degree of the cellulose ester short fiber and the pulp fiber, and the crepe rate, a papermaking sheet
  • the tensile strength in the flow direction of 1 is set to a value in the range of 1.5 N / 25 mm width or more and less than 40 N / 25 mm width.
  • the said manufacturing method uses the alkali salt of the polysaccharide containing a carboxyl group as a binder.
  • the binder may not be included in the components of the composition in the raw material adjustment step S1. That is, the binder addition step can be a step other than the raw material adjustment step S1, for example, depending on the characteristics of the binder. For example, in at least one of the wire process S2, the press process S3, and the dry process S4, a liquid containing a binder may be sprayed or applied to the sheet body, or the sheet body may be immersed in a liquid containing the binder. .
  • crepes were formed on the plurality of sheet bodies with different crepe rates R.
  • paper sheets of Comparative Examples 1 and 2 and Examples 1 to 17 having a basis weight set to any one of 21, 25, 35, and 40 g / m 2 were produced.
  • breaking elongation tensile breaking elongation
  • tensile strength test in the flow direction accordinging to the method of JIS P8113
  • Water disintegration test accordinging to the method of JIS P4501
  • air permeability resistance air permeability
  • the width of the test piece of the papermaking sheet (the width in the orthogonal direction perpendicular to the flow direction) was set to 25 mm width ⁇ 0.1 mm.
  • the maximum thickness dimension of the papermaking sheets of Comparative Examples 1 and 2 and Examples 1 to 17 in the natural state was measured with a thickness measuring instrument (dial thickness gauge).
  • the formability of the papermaking sheet when producing cigarette filters using the papermaking sheets of Comparative Examples 1 and 2 and Examples 1 to 17 was investigated. It was. Specifically, a plurality of irregularities extending in the circumferential direction were formed on the circumferential surface, and a pair of shaping rolls arranged so that the circumferential surfaces meshed with each other was used. The papermaking sheet is passed between the pair of shaping rolls in the flow direction to check for cracks in the papermaking sheet when the papermaking sheet is three-dimensionally processed, and the papermaking sheet is conveyed at a conveyance speed of 100 / min. Then, it was investigated whether or not the papermaking sheet could be rewound without breaking.
  • the formability of the papermaking sheet was evaluated in three stages. Specifically, the case where a large crack did not occur on the surface of the papermaking sheet during three-dimensional processing, and there was no frequent breakage, was evaluated as “A”. Moreover, the case where a big crack did not arise in the surface of a papermaking sheet
  • FIG. 4 is a graph showing the relationship between the elongation at break and the tensile strength of the papermaking sheets of Comparative Examples 1 and 2 and Examples 1 to 17.
  • FIG. 5 is a graph showing the relationship between the crepe rate R and the tensile strength of the papermaking sheets of Comparative Examples 1 and 2 and Examples 1 to 17.
  • FIG. 6 is a graph showing the relationship between the crepe rate R and breaking elongation of the papermaking sheets of Comparative Examples 1 and 2 and Examples 1 to 17.
  • FIG. 7 is a graph showing the relationship between the crepe rate R and the air resistance of the papermaking sheets of Comparative Examples 1 and 2 and Examples 1 to 17.
  • the tensile strength decreases as the crepe rate R increases. This decrease in tensile strength is due to the fact that the basis weight (fiber amount) of the sheet body in the previous steps S2 to S4 for forming a crepe on the sheet body, that is, the basis weight (fiber amount) of the stretched sheet body is small. .
  • the crepe rate R of the papermaking sheet is set to a value in the range of 5% to 35% and orthogonal to the flow direction.
  • a plurality of crepes extending along the orthogonal direction and arranged in the flow direction are formed on the papermaking sheet, or the tensile strength of the papermaking sheet is set to a value in the range of 1.5 N / 25 mm width to less than 40 N / 25 mm width.
  • the papermaking sheets of Examples 1 to 17 had a higher elongation at break and excellent moldability than the papermaking sheets of Comparative Examples 1 and 2.
  • the reason for this is that the paper sheets of Examples 1 to 17 are formed with a plurality of crepes extending in the orthogonal direction perpendicular to the flow direction. It can be considered that it can extend in the flow direction and is not easily damaged.
  • the papermaking sheets of Examples 1 to 17 are formed into a plurality of crepes suitable for three-dimensional processing by passing through the crepe forming step S5, and are stretched and molded well when three-dimensionally processed by a pair of shaping rolls. It is possible that
  • the papermaking sheet of Comparative Example 1 was found to have low moldability because large cracks occurred when it was three-dimensionally processed, and breakage occurred frequently when rewinded. Further, the papermaking sheet of Comparative Example 2 did not show frequent breakage when rewinded, but was found to have low formability due to large cracks occurring when three-dimensionally processed.
  • Example 7 has a crepe rate R of 35%
  • Example 8 has a crepe rate R of 40%. Therefore, Examples 7 and 8 have a good elongation at break but good moldability. Slightly lower results. Specifically, in Examples 7 and 8, large cracks were not observed when three-dimensionally processed, but some breakage was observed when the rotational speed of the roll was accelerated when rewinding.
  • the crepe rate R was set to a value of 5% or more.
  • the thickness dimension of the papermaking sheets of Examples 1 to 17 increased as the crepe rate R increased. This is because the larger the crepe rate R, the more crepes are formed on the papermaking sheet and the papermaking sheet becomes bulky.
  • a processed product can be made bulky by increasing the crepe rate R appropriately, and the makeup removal effect and the wiping effect can be obtained. It is thought that it is raised.
  • the crepe rate R is too small, it is difficult for the papermaking sheet to have sufficient elasticity, and if the crepe rate R is too large, the sheet body and the papermaking sheet are loosened during conveyance due to excessive elongation (sheet body). In addition, the tension exerted on the sheet body and the papermaking sheet for conveying the papermaking sheet cannot be sufficiently maintained), and the strength may be lowered, and it may be difficult to stably manufacture the papermaking sheet or the processed product.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)

Abstract

Cette feuille de papier comprend des fibres courtes d'ester de cellulose, fibres de pâte et un liant, et comporte, formées dans sa surface, une pluralité de fronces qui s'étendent suivant une direction orthogonale à la direction de circulation des fibres courtes d'ester de cellulose et des fibres de pâte et qui sont alignées dans la direction de circulation.
PCT/JP2017/036884 2016-12-16 2017-10-11 Feuille de papier et procédé de fabrication d'une feuille de papier WO2018110059A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN201780077156.1A CN110073055B (zh) 2016-12-16 2017-10-11 抄纸片材与抄纸片材的制造方法
LTEP17881628.6T LT3556937T (lt) 2016-12-16 2017-10-11 Popieriaus lapas ir popieriaus lapo gamybos būdas
ES17881628T ES2861724T3 (es) 2016-12-16 2017-10-11 Hoja de papel y método de fabricación de hojas de papel
KR1020197012915A KR102193242B1 (ko) 2016-12-16 2017-10-11 초지 시트 및 초지 시트의 제조 방법
EP17881628.6A EP3556937B1 (fr) 2016-12-16 2017-10-11 Feuille de papier et procédé de fabrication d'une feuille de papier

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JP2016244661A JP6496705B2 (ja) 2016-12-16 2016-12-16 抄紙シート及び抄紙シートの製造方法
JP2016-244661 2016-12-16

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US11421385B2 (en) 2018-08-23 2022-08-23 Eastman Chemical Company Soft wipe comprising cellulose acetate
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US11441267B2 (en) 2018-08-23 2022-09-13 Eastman Chemical Company Refining to a desirable freeness
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US11519132B2 (en) 2018-08-23 2022-12-06 Eastman Chemical Company Composition of matter in stock preparation zone of wet laid process
US11525215B2 (en) 2018-08-23 2022-12-13 Eastman Chemical Company Cellulose and cellulose ester film
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US11332888B2 (en) 2018-08-23 2022-05-17 Eastman Chemical Company Paper composition cellulose and cellulose ester for improved texturing
US11230811B2 (en) 2018-08-23 2022-01-25 Eastman Chemical Company Recycle bale comprising cellulose ester
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US11519132B2 (en) 2018-08-23 2022-12-06 Eastman Chemical Company Composition of matter in stock preparation zone of wet laid process
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KR20210081409A (ko) * 2018-12-07 2021-07-01 니뽄 다바코 산교 가부시키가이샤 비연소 가열형 흡연 물품 및 전기 가열형 흡연 시스템
KR102660137B1 (ko) * 2018-12-07 2024-04-25 니뽄 다바코 산교 가부시키가이샤 비연소 가열형 흡연 물품 및 전기 가열형 흡연 시스템

Also Published As

Publication number Publication date
EP3556937A1 (fr) 2019-10-23
CN110073055A (zh) 2019-07-30
CN110073055B (zh) 2021-11-09
KR20190067198A (ko) 2019-06-14
KR102193242B1 (ko) 2020-12-22
JP6496705B2 (ja) 2019-04-03
LT3556937T (lt) 2021-04-12
EP3556937A4 (fr) 2020-01-15
EP3556937B1 (fr) 2021-02-24
JP2018096010A (ja) 2018-06-21
ES2861724T3 (es) 2021-10-06

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