WO2003068284A1 - Produit absorbant d'hygiene - Google Patents

Produit absorbant d'hygiene Download PDF

Info

Publication number
WO2003068284A1
WO2003068284A1 PCT/IT2002/000087 IT0200087W WO03068284A1 WO 2003068284 A1 WO2003068284 A1 WO 2003068284A1 IT 0200087 W IT0200087 W IT 0200087W WO 03068284 A1 WO03068284 A1 WO 03068284A1
Authority
WO
WIPO (PCT)
Prior art keywords
absorbent product
hygienic absorbent
product according
layer
hygienic
Prior art date
Application number
PCT/IT2002/000087
Other languages
English (en)
Inventor
Franco Gallino
Original Assignee
Exten S.A.
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 Exten S.A. filed Critical Exten S.A.
Priority to PCT/IT2002/000087 priority Critical patent/WO2003068284A1/fr
Priority to AU2002237514A priority patent/AU2002237514A1/en
Publication of WO2003068284A1 publication Critical patent/WO2003068284A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/42—Use of materials characterised by their function or physical properties
    • A61L15/62—Compostable, hydrosoluble or hydrodegradable materials
    • 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
    • A61F13/15203—Properties of the article, e.g. stiffness or absorbency
    • A61F13/15252—Properties of the article, e.g. stiffness or absorbency compostable or biodegradable
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
    • A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
    • A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
    • A61L15/26—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof

Definitions

  • the present invention relates to a disposable hygienic absorbent product and in particular to an absorbent product useable as a napkin for babies, as a sanitary towel for ladies or incontinent adults.
  • disposable absorbent products are formed of at least two main layers, that is an absorbent layer positioned on the user side and suitable for receiving and storing the organic exudates of said user, and an impermeable outer layer having the purpose of preventing said exudates from coming out.
  • Said impermeable outer layer is generally formed of a thin film in polyolefin material, for example low density polyethylene (LDPE), optionally coupled with a fibrous layer which has only the purpose of making the external surface of the hygienic absorbent product pleasant to the touch.
  • LDPE low density polyethylene
  • impermeable polyolefin outer layer forms a barrier not only against the coming out of liquids, but also of gases, so that it prevents the normal skin transpiration, as well as the release of the vapors which are emitted in said absorbent layer due to the accumulation of the exudates.
  • the users of hygienic absorbents comprising said impermeable outer layers are subjected to disorders such as reddening of the skin and, in some cases, also superficial wounds or decubitus ulcers.
  • porous transpirant films also known with the term "breathable”.
  • Said films are made from a mixture of polymers and inorganic particles, which is extruded by traditional extrusion techniques.
  • the so obtained film is subjected to traction in one of the two directions so that, in coincidence of the inorganic particles, a number of pores are formed in the film which are suitable for enabling the gas passage from one side of the film to the other.
  • this type of impermeable outer layer may comprise a fibrous layer having the purpose of improving the pleasantness of the hygienic absorbent product from the aesthetic and tactile point of view.
  • Object of the present invention is therefore to provide a hygienic absorbent product which is free from said drawbacks. Said object is achieved by means of a hygienic absorbent product whose main features are specified in the first claim and other features are specified in the following claims.
  • a first advantage of the hygienic absorbent product according to the present invention consists in the high gas and vapor permeability thereof that, associated with a perfect liquid impermeability, ensures a suitable transpiration of the user's skin and at the same time prevents liquids from coming out. Further, said properties of the hygienic absorbent product also prevent the formation of condensates on the side of the absorbent product which is in contact with the user's clothes.
  • Another advantage of the hygienic absorbent product according to the present invention consists in that, by virtue of the particular polymeric material used for making the impermeable outer layer thereof, said layer is completely biodegradable and compostable in less than 12 weeks.
  • a further advantage of the hygienic absorbent product according to the present invention consists in the capability thereof to retain the smells.
  • the hygienic absorbent product for babies or incontinent adults comprises in a known way an absorbent layer and an impermeable breathable outer layer.
  • said external layer is formed of a laminate comprising a film in monolithic polymeric material and a fibrous layer which has the only purpose of conferring pleasantness and softness to the outer surface of the hygienic absorbent product.
  • Said fibrous layer may be formed of a cellulose fibre tissue, or of a fabric of polyolefin material, for example a polypropylene material.
  • Monolithic polymers are known in the art as water vapor permeable materials by virtue of their partially hydrophilic nature which prevents the passage of the liquids, but enables at the same time the passage of the water vapor from the side with the higher concentration to that with the lower concentration. Said passage is carried out through the polymer material itself through a mechanism of chemical sorption of the water molecules and subsequent desorption thereof. Said mechanism is known in the art so that further detailed explanations are not requested.
  • the monolithic polymeric material used for the hygienic absorbent product according to the present invention is a biodegradable and compostable random aliphatic-aromatic copolyester.
  • aliphatic-aromatic copolyesters can be used which are made from terephtalic acid monomers, monomers of at least one linear aliphatic dicarboxylic acid and monomers of at least one linear aliphatic diol.
  • Said copolyesters have a very high biodegradability and compostability. As a matter of fact they can be attacked both in soil and in compost in less than 12 weeks, and are therefore particularly suitable for making the impermeable film of the hygienic absorbent product according to the present invention.
  • terephtalic acid contributes in improving the physical and mechanical properties of the film, but reduces the biodegradability and compostability thereof. Therefore, its quantity in the polymerisation mixture is preferably lower than about 30% by weight.
  • linear aliphatic diol incorporated in the mixture does not influence the biodegradability and compostability of the polymer, but is important for the other properties of the polymer itself.
  • Linear aliphatic diols comprising 2 to 4 carbon atoms, such as 1,4-butandiol, are preferably used.
  • the linear aliphatic dicarboxylic acid used in the above mentioned polymerisation mixture advantageously comprises 6 to 10 carbon atoms; for example, a particularly suitable acid is adipic acid.
  • An aliphatic-aromatic copolyester suitable for manufacturing the hygienic absorbent product according to the invention is the one sold by the company BASF under the name Ecoflex ® .
  • the hygienic absorbent products according to the present invention have very high water vapor permeability values. Said values obviously vary according to the thickness (or density) of the film incorporated in the absorbent product and of the particular polymeric material of which it is formed.
  • the hygienic absorbent product according to the present invention can be obtained by first introducing the monolithic polymeric material into an extruder, the molten polymer at the outlet of said extruder being fed to a spinneret and then cooled on a water conditioned cylinder.
  • the transversal uniformity of the film is regulated through the width of the spinneret, whereas the ratio between the flow rate of the extruder and the velocity of the line determines the final thickness.
  • the final thickness of the film is between 10 and 50 ⁇ m.
  • the film is then laminated by thermocontact with the fibrous layer, formed of a cellulose tissue or a nonwoven polypropylene fabric, coming from a separated station.
  • the so obtained laminate is transferred on a line for manufacturing absorbent products, wherein it is applied on the back of a semi- finished absorbent product by means of a method known in the art, for example by thermocontact or by using glues or ultrasound.
  • the obtained laminate is able to carry out the function of a barrier impermeable to the liquids in the finished hygienic absorbent product, and at the same time offers the advantages of permeability to gases and vapors, of impermeability to the smells produced by the organic exudates and of degradability and compostability of the used absorbent product.

Landscapes

  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Hematology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un produit absorbant d'hygiène pour les bébés ou les adultes incontinents, comprenant une couche absorbante et une couche externe perméable à l'air. Cette couche externe est formée à partir d'un stratifié comprenant un film en matière polymère monolithique et une couche fibreuse, la matière polymère monolithique consistant en un copolyester aliphatique-aromatique compostable et biodégradable.
PCT/IT2002/000087 2002-02-14 2002-02-14 Produit absorbant d'hygiene WO2003068284A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/IT2002/000087 WO2003068284A1 (fr) 2002-02-14 2002-02-14 Produit absorbant d'hygiene
AU2002237514A AU2002237514A1 (en) 2002-02-14 2002-02-14 Hygienic absorbent product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/IT2002/000087 WO2003068284A1 (fr) 2002-02-14 2002-02-14 Produit absorbant d'hygiene

Publications (1)

Publication Number Publication Date
WO2003068284A1 true WO2003068284A1 (fr) 2003-08-21

Family

ID=27676900

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT2002/000087 WO2003068284A1 (fr) 2002-02-14 2002-02-14 Produit absorbant d'hygiene

Country Status (2)

Country Link
AU (1) AU2002237514A1 (fr)
WO (1) WO2003068284A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101657504B (zh) * 2006-12-21 2014-01-08 诺瓦蒙特股份公司 包含聚烯烃和脂族-芳族共聚聚酯的聚合物组合物

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998023673A1 (fr) * 1996-11-27 1998-06-04 Eastman Chemical Company Compositions elastomeres thermoplastiques et films obtenus a partir de ces compositions et a coefficients accrus de permeabilite a l'humidite
WO2001014621A1 (fr) * 1999-08-25 2001-03-01 Kimberly-Clark Worldwide, Inc. Non tisses biodesintegrables aux proprietes de gestion de fluide et produits absorbants jetables les contenant
WO2001066160A1 (fr) * 2000-03-07 2001-09-13 The Procter & Gamble Company Film biodegradable pour articles absorbants jetables

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998023673A1 (fr) * 1996-11-27 1998-06-04 Eastman Chemical Company Compositions elastomeres thermoplastiques et films obtenus a partir de ces compositions et a coefficients accrus de permeabilite a l'humidite
WO2001014621A1 (fr) * 1999-08-25 2001-03-01 Kimberly-Clark Worldwide, Inc. Non tisses biodesintegrables aux proprietes de gestion de fluide et produits absorbants jetables les contenant
WO2001066160A1 (fr) * 2000-03-07 2001-09-13 The Procter & Gamble Company Film biodegradable pour articles absorbants jetables

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
MULLER R-J ET AL: "Architecture of biodegradable copolyesters containing aromatic constituents", POLYMER DEGRADATION AND STABILITY, BARKING, GB, vol. 59, no. 1-3, January 1998 (1998-01-01), pages 203 - 208, XP004294377, ISSN: 0141-3910 *
MULLER R-J ET AL: "Biodegradation of polyesters containing aromatic constituents", JOURNAL OF BIOTECHNOLOGY, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 86, no. 2, 30 March 2001 (2001-03-30), pages 87 - 95, XP004229548, ISSN: 0168-1656 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101657504B (zh) * 2006-12-21 2014-01-08 诺瓦蒙特股份公司 包含聚烯烃和脂族-芳族共聚聚酯的聚合物组合物

Also Published As

Publication number Publication date
AU2002237514A1 (en) 2003-09-04

Similar Documents

Publication Publication Date Title
EP1341839B2 (fr) Film biodegradable respirant et lamine
AU740500B2 (en) Water degradable microlayer polymer film
US6582810B2 (en) One-step method of producing an elastic, breathable film structure
KR100972887B1 (ko) 2성분 단일 수지를 이용하여 제조한 통기성의 신장성 필름
US6838403B2 (en) Breathable, biodegradable/compostable laminates
AU750714B2 (en) Microlayer breathable films of degradable polymers and thermoplastic elastomers
US6071450A (en) Method for making water degradable polymer microlayer film
JPH09506656A (ja) 通気性のクロス状フィルム／不織布複合材料
JP2003508254A (ja) 亀裂を生じるスキン層を有する通気性多層フィルム
AU2002246897A1 (en) One-step method of producing an elastic, breathable film structure
KR20050085219A (ko) 흡수용품에 사용하기 위한 통기성 다층 필름
JP2005524556A (ja) 通気性物品類
WO2000039218A2 (fr) Films d'oxyde de poly(ethylene) comprenant des particules d'argile non modifiee a respirabilite amelioree et microstructure unique
JP2006506245A (ja) 通気性弾性多層フィルム及び通気性弾性多層フィルムを製造する方法
JP2001233982A (ja) 多孔質ポリオレフィンフィルム及びその製造方法
US20050112350A1 (en) Biodegradable and breathable polymer film
WO2002053375A1 (fr) Film polymere microcouche biodegradable dans l'eau et articles sanitaires dans lesquels ce film est incorpore
WO2003068284A1 (fr) Produit absorbant d'hygiene
JP4540888B2 (ja) 吸水性物品用バックシート
AU2002227007B2 (en) Biodegradable breathable film and laminate
JP2001315234A (ja) 透湿性シート
MXPA06005197A (en) Biodegradable and breathable polymer film

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ OM PH PL PT RO RU SD SE SG SI SK SL TJ TM TN TR TT TZ UA UG US UZ VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP

WWW Wipo information: withdrawn in national office

Country of ref document: JP