WO2001054640A1 - Article utilisable dans des vetements jetables - Google Patents

Article utilisable dans des vetements jetables Download PDF

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Publication number
WO2001054640A1
WO2001054640A1 PCT/JP2001/000468 JP0100468W WO0154640A1 WO 2001054640 A1 WO2001054640 A1 WO 2001054640A1 JP 0100468 W JP0100468 W JP 0100468W WO 0154640 A1 WO0154640 A1 WO 0154640A1
Authority
WO
WIPO (PCT)
Prior art keywords
sheet
layer
water
absorber
nonwoven fabric
Prior art date
Application number
PCT/JP2001/000468
Other languages
English (en)
Japanese (ja)
Inventor
Satoshi Maeda
Kenji Nakaoka
Masaru Fujioka
Kazuyo Mori
Original Assignee
Toyo Eizai Kabushiki Kaisha
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
Application filed by Toyo Eizai Kabushiki Kaisha filed Critical Toyo Eizai Kabushiki Kaisha
Priority to AU28806/01A priority Critical patent/AU2880601A/en
Priority to JP2001555620A priority patent/JP4605971B2/ja
Publication of WO2001054640A1 publication Critical patent/WO2001054640A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium

Definitions

  • the present invention relates to disposable wearing articles such as napkins, disposable diapers, and disposable pants, and more specifically, can be made extremely thin because it does not use defibrated pulp fibers used in ordinary absorbents. Also relates to disposable wearing articles that exhibit good absorption properties. Background technology
  • fibrillated pulp fiber, water-absorbent resin powder, hot-melt fiber, etc. have been molded into a mat shape as an absorber for absorbing body fluids used as disposable diapers, disposable pants or napkins.
  • an absorption mat was used, which was wrapped with thin paper and fixed.
  • Such an absorbent mat has a large thickness because it contains pulp fibers.
  • the heat compression treatment has been attempted to bind the pulp fiber with heat-meltable fiber to form a thin shape, and the pulp fiber after absorbing water has a strong force to spread to the surrounding area.
  • the crotch portion of the diaper and the like bulged outward after urination, giving the wearer discomfort.
  • the sheet-shaped absorber having the structure in which the superabsorbent composite composition is supported by a nonwoven fabric has a problem in that, even when used in a wearing article, it is too thin to be easily dislodged when worn.
  • the present invention is based on the premise that the above-described superabsorbent composite composition is used in place of the conventional absorbent core composed of pulp fiber and superabsorbent resin powder, and is ultrathin and deformable. It is an object of the present invention to provide a disposable wearing article which does not cause buckling and can sufficiently exhibit its absorbing ability. Disclosure of the invention
  • the disposable wearing article of the present invention is a disposable wearing article having a top sheet on a top layer and a back sheet on a bottom layer, and has a basis weight of 20 to 100 gZ under the top sheet.
  • a temporary reservoir layer consisting of m 2 nonwoven, on the lower side of the temporary reservoir layer, superabsorbent formed of Mi click Rofui Brill and superabsorbent polymer having hydration obtained from cellulose or a cellulose derivative conductor
  • a sheet-like absorbent body in which a layer of the composite composition is partially joined to a lower side of the nonwoven fabric support according to a predetermined pattern, and the topsheet, the temporary water storage layer, and the sheet-like absorbent body are provided. They are integrally joined at the joint.
  • FIG. 1 is a partially cutaway plan view showing a typical embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view of a sheet-shaped absorber.
  • FIG. 3 is a schematic cross-sectional view taken along line AA of FIG.
  • FIG. 4 is a schematic cross-sectional view taken along the line BB of FIG.
  • FIG. 5 is a schematic sectional view showing another typical embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION
  • the disposable wearing article of the present invention is a disposable wearing article having a top sheet on a top layer and a back sheet on a bottom layer, and has a basis weight of 20 to 100 gZ under the top sheet.
  • a temporary reservoir layer consisting of m 2 nonwoven, on the lower side of the temporary reservoir layer, superabsorbent formed of Mi click Rofui Buri Le and superabsorbent polymer having hydration obtained from cellulose or a cellulose derivative conductor
  • a configuration in which two or more sheet-like absorbers are stacked so that the superabsorbent composite composition layer of each sheet-like absorber is located on the lower side leads to an increase in absorption capacity, and the present invention This is a preferred embodiment.
  • the composite composition layer is positioned on the lower side, the non-woven fabric support is positioned on the upper side, and the discharged liquid diffuses toward the surface of the non-woven fabric support to the composite composition layer.
  • the concentration of the discharged liquid only on a part of the sheet-like absorber is reduced, which is effective in preventing leakage.
  • the non-woven fabric for the temporary reservoir contains heat-meltable fibers and rayon fibers, and preferably contains at least 10% by mass of rayon fibers.
  • a thermally bonded nonwoven fabric that fuses and bonds a part of the fiber by an air-through method (also referred to as a through-air method) is bulky and is therefore preferable as the temporary water storage layer of the present invention. Therefore, it is desirable to use heat-meltable fiber as an essential component.
  • the nonwoven fabric is inferior in hydrophilicity only with the heat-meltable fiber and may not be able to function as a temporary water storage layer, it is preferable that the nonwoven fabric contains 10% by mass or more of the rayon fiber.
  • Water-absorbing paper is further laminated below the sheet-shaped absorber, and the topsheet, the temporary storage layer, the sheet-shaped absorber, and the water-absorbing paper are partially joined together, and
  • the configuration in which the lower back sheet and the water-absorbing paper are not joined at this joint is the most preferred embodiment of the present invention.
  • the backsheet and the water-absorbing paper were applied intermittently, such as in the form of dots, spirals, etc., because the sheet-like absorber and the backsheet are easily joined when they are joined together at a single joint. It is preferable to join with a hot melt adhesive or the like.
  • the layer of the superabsorbent composite composition formed from cellulose or a hydrated microfibril obtained from a cellulose derivative and the superabsorbent resin is formed of a nonwoven fabric support.
  • a sheet-like absorber that is partially joined according to a predetermined pattern is provided on the lower side.
  • Microfibrils and composite compositions formed from the microfibrils and superabsorbent resins are described in detail in Japanese Patent Application Laid-Open No. H11-168230. That is, microfibrils are cellulose or cellulose derivatives.
  • the superabsorbent resin is a known superabsorbent resin powder such as polyacrylate, cellulose, starch and acrylonitrile.
  • Microfibrils are mixed in a mixed solvent in which a hydrophilic organic solvent such as methanol or acetate and water are mixed in a range of 90/10 to 40/60 (mass ratio).
  • a dispersion in which 3 to 1.0% by mass of the superabsorbent resin powder is dispersed in a range of 5 to 50% by mass is dispersed on a nonwoven fabric support, for example, in a 10-mm-wide streak pattern at intervals of 5 mm, and dried. Then, by removing the solvent, a sheet-like absorber in which the composite composition is separated and joined to one surface of the nonwoven fabric support can be obtained.
  • microfibrils cover the surface of the superabsorbent resin particles, and the microfibrils self-join to form a network structure, and are firmly linked by ion-like hydrogen bonds. Since the nonwoven fabric support and the microfibrils are physically entangled with each other, the highly water-absorbent composite composition becomes a sheet-like absorber firmly bonded to the nonwoven fabric support.
  • the arrangement of the composite composition in the form of streaks takes into account the fact that the superabsorbent resin in the composite composition swells after absorbing water. May be partially bonded to the nonwoven fabric support.
  • the arrangement pattern can be changed as appropriate according to the use, the sex of the wearer, and the like.
  • the basis weight and constituent fibers of the nonwoven fabric support are not particularly limited, but those having a basis weight of 15 to 80 g Zm 2 are preferred, and hydrophilic fibers such as cotton, rayon, and pulp; It is necessary to use polyethylene, polypropylene, polyester, etc. or their composite fibers. If necessary, those subjected to hydrophilic treatment can be used. Air-through thermal bonded nonwoven fabric, spunbonded nonwoven fabric, card dry nonwoven fabric and the like are preferable.
  • the sheet-like absorbent body it is also possible to provide a composite composition layer on both sides of the nonwoven fabric support.
  • this layer is provided on one side of the nonwoven fabric support, and the composite composition is contained in the wearing article. It is preferred to arrange the layers so that they are on the lower side. Since the discharged liquid comes into contact with the nonwoven fabric support first, the liquid diffuses in the direction of the surface of the nonwoven fabric support and penetrates into the composite composition layer, thereby forming a part of the composite composition. Only the effluent can be prevented from concentrating.
  • the sheet-shaped absorber may be stacked in a plurality of layers, and in each layer, it is preferable to dispose the composite composition layer on the lower side.
  • the configuration of the disposable wearing article of the present invention will be described with reference to the drawings.
  • a worn article having a shape that can be used for a napkin or a disposable urine collecting pad is shown, but the worn article of the present invention is not limited to the shape shown in FIG. It is also possible to change to the shape of disposable pants.
  • FIG. 1 shows a partially cutaway plan view of one embodiment of the disposable wearing article 1 of the present invention.
  • a cocoon-shaped topsheet 2 is located on the uppermost layer, and a backsheet 5 having the same shape as the topsheet 2 is located on the lowermost layer.
  • At least the periphery of both sheets 2 and 5 is bonded with a heat seal or a hot melt adhesive.
  • FIG. 1 shows a partially cutaway plan view of one embodiment of the disposable wearing article 1 of the present invention.
  • a cocoon-shaped topsheet 2 is located on the uppermost layer
  • a backsheet 5 having the same shape as the topsheet 2 is located on the lowermost layer.
  • At least the periphery of both sheets 2 and 5 is bonded with a heat seal or a hot melt adhesive.
  • top sheet 2 includes nonwoven fabrics made of hydrophilic fibers such as cotton, rayon, and pulp, fibers such as polyethylene, polypropylene, and polyester, and hydrophobic fibers such as composite fibers of these.
  • hydrophilic fibers such as cotton, rayon, and pulp
  • fibers such as polyethylene, polypropylene, and polyester
  • hydrophobic fibers such as composite fibers of these.
  • a water-permeable nonwoven fabric obtained by hydrophilizing a nonwoven fabric made of fibers, a nonwoven fabric formed by mixing the above hydrophilic fibers and hydrophobic fibers, a plastic film having a large number of apertures, and the like are used.
  • a liquid-impervious plastic film, a fine or non-perforated moisture-permeable film, a water-repellent nonwoven fabric, a laminate of a nonwoven fabric and a film, and the like should be appropriately selected.
  • FIG. 3 is a cross-sectional view taken along line AA of FIG. 1
  • FIG. 4 is a cross-sectional view taken along line B-B of FIG.
  • Reference numeral 6 denotes a joint.
  • the joint 6 joins the topsheet 2 , the temporary storage layer 3, and the sheet-like absorber 4 to the body.
  • the back sheet 5 is not joined at the joint 6.
  • the sheet-like absorber 4 can follow the movement of the topsheet 2 by joining the sheet-like absorber 4 not only to the temporary reservoir 3 but also to the topsheet 2 at the joint 6. Thus, it is possible to effectively prevent only the sheet-shaped absorber 4 from being distorted.
  • the back sheet 5 and the sheet-shaped absorber 4 are joined with a dot-shaped, spiral-shaped, or other intermittently applied hot-melt adhesive or the like. .
  • a dot-shaped, spiral-shaped, or other intermittently applied hot-melt adhesive or the like is interposed.
  • the length, position, number, and shape of the joint 6 are not limited to those shown in the drawings, and may be three or more, or may extend over the entire length of the temporary reservoir 3.
  • a bent line, a curved line, a dot, a pattern, and the like can be appropriately selected.
  • a heat seal is a simple joining method. Since it is difficult to heat seal the portion where the composite composition layer 42 exists, it is recommended to join the nonwoven fabric support 41.
  • the topsheet 2, the temporary storage layer 3, the sheet-like absorber 4, and the water-absorbing paper 7 may be press-bonded together with a heat seal.
  • the water-absorbing paper 7 is not sufficiently joined only by heat and pressure of the heat seal, a portion corresponding to the joint 6 of the water-absorbing paper 7 (on the contact surface side of the sheet-like absorbent body 4) is previously hot-sealed. It is recommended to apply a melt adhesive.
  • absorbent paper provide an absorbent layer made of pulp fibers or a layer wrapped with absorbent paper or non-woven fabric, if the thickness of the disposable wearable article is not too thick. You may.
  • the composite composition layer 42 swells after absorbing water, if the adjacent composite composition layers come into close contact with each other after swelling, the water absorption capacity is reduced, so the separation distance of the composite composition layer 42 is taken into consideration. At the same time, it is preferable that a space is left around the composite composition layer 42 when the joint 6 is formed.
  • an air-through thermal non-woven fabric is particularly preferable because it is bulky and thick. This nonwoven fabric needs to contain heat-meltable fibers because a part of the fibers is melted and bonded by hot air.
  • the heat-meltable fiber examples include polyethylene, polypropylene, polyester fiber and the like, and composite fibers thereof (core-sheath, side-by-side, etc.) are also preferable.
  • the heat-meltable fiber alone is inferior in hydrophilicity, and lacks the ability to draw the liquid from the top sheet 2 into the temporary reservoir 3, so that the discharged liquid may remain on the surface of the top sheet 2. Therefore, in order to impart hydrophilicity to the nonwoven fabric, it is preferable that the nonwoven fabric contains 10% by mass or more of hydrophilic fibers, for example, rayon fibers. It is also effective to perform a hydrophilic treatment before or after the formation of the nonwoven fabric. Further, two or more thermal-bonded non-woven fabrics or non-woven fabrics obtained by other manufacturing methods may be laminated so that the basis weight as a whole falls within the above specified range.
  • the shape of the temporary reservoir 3 is not limited to the illustrated rectangle. Considering the diffusion effect of the liquid in the plane direction, a large area is preferable, and therefore, may have the same shape as the sheet-shaped absorber 4, but when the spot from which the discharged liquid is discharged is limited. However, for example, a configuration in which a temporary reservoir is provided only in the vicinity of the spot, such as in the front of the pad in the longitudinal direction of the pad for male urine pad, and near the center of the napkin, etc. Good.
  • the sheet-shaped absorber 4 may be laminated in a plurality of layers, and is arranged such that the composite composition layer 42 is located on the lower side. Further, a configuration in which the temporary storage layer 3 and the sheet-shaped absorber 4 are alternately stacked may be adopted.
  • the present invention is configured as described above, even if it is ultra-thin, It was possible to provide a disposable wearing article which is excellent in water performance and has little deformation. Therefore, it can be used for disposable pants, disposable diapers, urine collection pads, napkins, etc.
  • the disposable wearing article of the present invention is used for a water retention / water absorption material for agriculture, a concrete curing mat, a dew condensation preventing sheet, a poultice, a patch, a cosmetic, etc. in addition to the sanitary material field. be able to.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

La présente invention concerne un article utilisable dans des vêtements jetables (1) qui possède une feuille supérieure sous forme de dernière couche supérieure et une feuille arrière (5) sous forme de dernière couche inférieure. Cet article se caractérise par le fait qu'il possède une couche (3) destinée à stocker provisoirement de l'eau, qui inclut un tissu non tissé dont la densité aréolaire est comprise entre 20 et 100g/m2, et sous cette couche (3), cet article possède une feuille (4) absorbant l'eau qui inclut un support (41) de tissu non tissé et, liée en partie selon une configuration donnée au fond de cet article, une composition (42) composite hautement absorbante. Cette composition comprend une résine hautement absorbante et des microfibrilles qu'on peut mouiller issues de celluloses ou de ses dérivés. Enfin la feuille supérieure (2), la couche (3) destinée à stocker provisoirement de l'eau et la feuille (4) absorbant l'eau sont partiellement liées en une pièce au niveau d'une zone de liaison (6).
PCT/JP2001/000468 2000-01-26 2001-01-25 Article utilisable dans des vetements jetables WO2001054640A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU28806/01A AU2880601A (en) 2000-01-26 2001-01-25 Article for use in disposable clothes
JP2001555620A JP4605971B2 (ja) 2000-01-26 2001-01-25 使い捨て着用物品

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000017453 2000-01-26
JP2000-17453 2000-01-26

Publications (1)

Publication Number Publication Date
WO2001054640A1 true WO2001054640A1 (fr) 2001-08-02

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PCT/JP2001/000468 WO2001054640A1 (fr) 2000-01-26 2001-01-25 Article utilisable dans des vetements jetables

Country Status (3)

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JP (1) JP4605971B2 (fr)
AU (1) AU2880601A (fr)
WO (1) WO2001054640A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2014269A1 (fr) 2007-06-22 2009-01-14 Livedo Corporation Produit absorbant
WO2012165327A1 (fr) * 2011-05-27 2012-12-06 花王株式会社 Article absorbant
WO2021010278A1 (fr) * 2019-07-18 2021-01-21 大王製紙株式会社 Feuille d'essuyage et procédé de fabrication de feuille d'essuyage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102031641B1 (ko) * 2017-09-14 2019-10-14 에이치앤비 주식회사 바이오셀룰로오스를 인체 접촉면에 사용한 위생 흡수용품
KR102176944B1 (ko) * 2018-05-10 2020-11-10 박소라 고분자 천연 물질을 이용한 생리대 구조체

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0685214A2 (fr) * 1994-06-03 1995-12-06 Uni-Charm Corporation Coussin à jeter pour absorber des liquides corporels
WO1997019661A1 (fr) * 1995-11-28 1997-06-05 The Procter & Gamble Company Article absorbant a barriere anti-remouillage
WO1998025999A1 (fr) * 1996-12-13 1998-06-18 Japan Absorbent Technology Institute Compositions composites hautement absorbantes, feuilles absorbantes pourvues de ces compositions, et procede d'elaboration de ces composites
JPH1189878A (ja) * 1997-09-17 1999-04-06 Oji Paper Co Ltd 吸収性物品

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08322881A (ja) * 1995-06-06 1996-12-10 New Oji Paper Co Ltd 吸収性物品
JP3413714B2 (ja) * 1996-12-06 2003-06-09 信越化学工業株式会社 室温硬化性オルガノポリシロキサン組成物

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0685214A2 (fr) * 1994-06-03 1995-12-06 Uni-Charm Corporation Coussin à jeter pour absorber des liquides corporels
WO1997019661A1 (fr) * 1995-11-28 1997-06-05 The Procter & Gamble Company Article absorbant a barriere anti-remouillage
WO1998025999A1 (fr) * 1996-12-13 1998-06-18 Japan Absorbent Technology Institute Compositions composites hautement absorbantes, feuilles absorbantes pourvues de ces compositions, et procede d'elaboration de ces composites
JPH1189878A (ja) * 1997-09-17 1999-04-06 Oji Paper Co Ltd 吸収性物品

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2014269A1 (fr) 2007-06-22 2009-01-14 Livedo Corporation Produit absorbant
US8329978B2 (en) 2007-06-22 2012-12-11 Livedo Corporation Absorbent product
US8686217B2 (en) 2007-06-22 2014-04-01 Livedo Corporation Absorbent product
WO2012165327A1 (fr) * 2011-05-27 2012-12-06 花王株式会社 Article absorbant
WO2021010278A1 (fr) * 2019-07-18 2021-01-21 大王製紙株式会社 Feuille d'essuyage et procédé de fabrication de feuille d'essuyage
JP2021017662A (ja) * 2019-07-18 2021-02-15 大王製紙株式会社 拭き取り用シート及び当該拭き取り用シートの製造方法
JP7008667B2 (ja) 2019-07-18 2022-01-25 大王製紙株式会社 拭き取り用シート及び当該拭き取り用シートの製造方法
CN113994044A (zh) * 2019-07-18 2022-01-28 大王制纸株式会社 擦拭用片材以及该擦拭用片材的制造方法
CN113994044B (zh) * 2019-07-18 2023-10-03 大王制纸株式会社 擦拭用片材以及该擦拭用片材的制造方法

Also Published As

Publication number Publication date
JP4605971B2 (ja) 2011-01-05
AU2880601A (en) 2001-08-07

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