EP0388062A2 - Filz mit stufenweiser Dichte - Google Patents

Filz mit stufenweiser Dichte Download PDF

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Publication number
EP0388062A2
EP0388062A2 EP90302371A EP90302371A EP0388062A2 EP 0388062 A2 EP0388062 A2 EP 0388062A2 EP 90302371 A EP90302371 A EP 90302371A EP 90302371 A EP90302371 A EP 90302371A EP 0388062 A2 EP0388062 A2 EP 0388062A2
Authority
EP
European Patent Office
Prior art keywords
needling
fibres
web
penetration
needles
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.)
Granted
Application number
EP90302371A
Other languages
English (en)
French (fr)
Other versions
EP0388062B1 (de
EP0388062A3 (en
Inventor
Malcolm Downie
Nigel Brassington
Clyde Sunley
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.)
DVSG Holding GmbH
Noxet UK Ltd
Original Assignee
TEXON FOOTWEAR Inc
DVSG Holding GmbH
British United Shoe Machinery Ltd
Emhart Materials UK Ltd
TEXON FOOTWEAR Inc
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 TEXON FOOTWEAR Inc, DVSG Holding GmbH, British United Shoe Machinery Ltd, Emhart Materials UK Ltd, TEXON FOOTWEAR Inc filed Critical TEXON FOOTWEAR Inc
Priority to AT90302371T priority Critical patent/ATE99363T1/de
Publication of EP0388062A2 publication Critical patent/EP0388062A2/de
Publication of EP0388062A3 publication Critical patent/EP0388062A3/en
Application granted granted Critical
Publication of EP0388062B1 publication Critical patent/EP0388062B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4266—Natural fibres not provided for in group D04H1/425
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425—Cellulose series
    • D04H1/4258—Regenerated cellulose series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/4291—Olefin series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4282—Addition polymers
    • D04H1/43—Acrylonitrile series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4326—Condensation or reaction polymers
    • D04H1/435—Polyesters
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres

Definitions

  • the present invention relates to a method for the manufacture of an absorbent material having graduated density, and to an absorbent material manufactured by this method.
  • Absorbent materials of this type are particularly suitable for use as medical or hygienic absorbents, for the absorption of body fluids, for example in surgical dressings, sanitary products and incontinence products. It is a requirement of such absorbents that they should absorb the fluid away from the surface of the absorbent in contact with the source of fluid, but that fluid strike-through, that is the passage of fluid through the surface of the absorbent remote from the source of fluid, should be delayed as much as possible. In this way, the interval between the replacement of a used absorbent with a new absorbent can be extended.
  • the present invention provides a method for the manufacture of an absorbent material having graduated density by needling a web, characterised in that the web, before needling but after tacking, is of substantially constant density across its thickness, and in that needling is carried out so that the needles penetrate to the extent that only the surfaces of the web are needled.
  • the invention further provides an absorbent material which has been manufactured by the method according to the invention.
  • the web for use in the method according to the invention preferably comprises a major proportion, up to 100%, of hydrophilic fibres, which may be blended with a minor proportion, preferably up to 30%, of hydrophobic fibres.
  • the hydrophobic fibres are incorporated to provide a "scaffolding", which resists compression and helps to maintain the low density structure of the centre of the material during needling, and in subsequent use, especially when the material becomes wet.
  • hydrophilic fibres these are preferably rayon, acrylic or cotton fibres, or a mixture thereof, more preferably rayon fibres.
  • the web for use in the method according to the invention may also comprise 100% hydrophobic fibres.
  • the absorbency of the web is due to the structure of the material, rather than any inherent absorbency of the fibres.
  • hydrophobic fibres are present, these are preferably polyester or polyolefin fibres, more preferably polyester fibres.
  • needling is carried out using barbed needles of the type which have a section close to the point of the needle which is free from barbs, and then a section which is provided with barbs.
  • Suitable needles include those marketed by Foster Needle under the reference number 15 x 18 x 40 x 3.5CB F.20 9-18-3B and those marketed by Groz Beckaert under the reference numbers 15 x 18 x 43 x 3.5 C333 G1002, 15 x 18 x 40 x 3.5 R333 G1909 and 15 x 18 x 40 x 3 F222 G92919.
  • Needling may be carried out to a similar penetration on each side of the web, so that a symmetrical absorbent material which can be used with either surface contacting the source of fluid is obtained.
  • needling may be carried out to a different penetration on each side of the web, to provide a material having surface regions of different density.
  • the wound dressing produced is used with the less dense surface adjacent the wound, and the more dense surface remote from the wound. Such an arrangement of different surface densities has the effect of improving the fluid uptake while maintaining delayed strike through.
  • the absorbent material is preferably provided with a surface covering which is non-adherent.
  • the absorbent material may be wrapped, in known manner, in a non-adherent material or may be bonded, also in known manner, to such a material, to form a composite article.
  • the composite articles manufactured in this way are particularly suitable for use as surgical dressings, sanitary towels or incontinence products.
  • the effects achieved by varying the weight of the final product and/or the needle penetration can be observed.
  • the weight of the final product is reduced, the absorption is reduced and handling the fabric becomes more difficult.
  • this can be advantageous in certain applications.
  • the weight of the batt to be introduced into the loom is determined by the desired weight of the final product. In practice the batt weight is determined empincally, the feed of the batt being controlled according to the actual weight of the final product.
  • a batt was produced from a fibre blend of 80% 1.7 dTex 51mm staple viscose fibres and 20% 5.0 dTex 40mm staple polyester fibres.
  • the felt was then needled in a three-stage operation.
  • the batt was passed between up and down stroking needle boards, fitted with 15 x 18 x 40 x 3 F222 G92919 needles marketed by Groz Beckaert. The penetration of both the top and bottom needles was 14mm
  • the batt was passed under a single needle board fitted with a mixture of 67% 15 x 18 x 40 x 3.5 R333 G1909 needles and 33% Foster 15 x 18 x 40 x 3.5CB F20 9-18-3B needles. Needling was carried out using a downstroke only, with a penetration of 6.1mm at a needle punch density of 83.
  • the partially needled batt was passed between up and down stroking needle boards, fitted with a mixture of 67% 15 x 18 x 40 x 3.5 R333 G1909 needles and 33% Foster 15 x 18 x 40 x 3.5CB F20 9-18-3B needles.
  • the top penetration was 4.6mm and the bottom penetration 5.6mm, with a needle punch density of 329 and head speed of 509 r.p.m.
  • the final product weight was 300gsm.
  • the product was satisfactory for use as a medical absorbent, with dense surfaces and a less dense interior.
  • a batt was produced from a fibre blend of 80% 1.7 dTex 51mm staple viscose fibres and 20% 5.0 dTex 40mm staple polyester fibres.
  • the felt was then needled in a three-stage operation.
  • the batt was passed between up and down stroking needle boards, fitted with 15 x 18 x 40 x 3 F222 G92919 needles marketed by Groz Beckaert. The penetration of both the top and bottom needles was 14mm
  • the batt was passed under a single needle board fitted with a mixture of 67% 15 x 18 x 40 x 3.5 R333 G1909 needles and 33% Foster 15 x 18 x 40 x 3.5CB F20 9-18-3B needles. Needling was carried out using a downstroke only, with a penetration of 6.1mm at a needle punch density of 83.
  • the partially needled batt was passed between up and down stroking needle boards, fitted with a mixture of 67% R333 15 x 18 x 40 x 3.5 G1909 needles and 33% Foster 15 x 18 x 40 x 3.5CB F20 9-18-3B needles.
  • the top penetration was 0.2mm and the bottom penetration 5.6mm, with a needle punch density of 392 and head speed of 605 r.p.m.
  • the final product weight was 300gsm.
  • the products demonstrated excellent properties for use as a medical absorbent, with dense surfaces and more open centre.
  • a batt was produced from a fibre blend of 80% 1.7 dTex 51mm staple viscose fibres and 20% 5.0 dTex 40mm staple polyester fibres.
  • the felt was then needled in a three-stage operation.
  • the batt was passed between up and down stroking needle boards, fitted with 15 x 18 x 40 x 3 F222 G92919 needles marketed by Groz Beckaert. The penetration of both the top and bottom needles was 14mm
  • the batt was passed under a single needle board fitted with a mixture of 67% 15 x 18 x 40 x 3.5 R333 G1909 RB needles and 33% Foster 15 x 18 x 40 x 3.5CB F20 9-18-3B needles. Needling was carried out using a downstroke only, with a penetration of 6.1mm at a needle punch density of 86.
  • the partially needled batt was passed between up and down stroking needle boards, fitted with a mixture of 67% R333 15 x 18 x 40 x 3.5 G1909 RB needles and 33% Foster 15 x 18 x 40 x 3.5CB F20 9-18-3B needles.
  • the top penetration was 4.7mm and the bottom penetration 5.6mm, with a needle punch density of 337 and head speed of 501 r.p.m.
  • the final product weight was 190gsm.
  • the product was a lighter weight felt, which would be suitable for a use in medical applications where the absorbency required was not so high, and light weight was an advantage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Artificial Filaments (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Materials For Medical Uses (AREA)
EP90302371A 1989-03-14 1990-03-06 Filz mit stufenweiser Dichte Expired - Lifetime EP0388062B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90302371T ATE99363T1 (de) 1989-03-14 1990-03-06 Filz mit stufenweiser dichte.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898905793A GB8905793D0 (en) 1989-03-14 1989-03-14 Graduated density felt
GB8905793 1989-03-14

Publications (3)

Publication Number Publication Date
EP0388062A2 true EP0388062A2 (de) 1990-09-19
EP0388062A3 EP0388062A3 (en) 1990-10-24
EP0388062B1 EP0388062B1 (de) 1993-12-29

Family

ID=10653273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90302371A Expired - Lifetime EP0388062B1 (de) 1989-03-14 1990-03-06 Filz mit stufenweiser Dichte

Country Status (4)

Country Link
EP (1) EP0388062B1 (de)
AT (1) ATE99363T1 (de)
DE (1) DE69005488T2 (de)
GB (1) GB8905793D0 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993022486A1 (en) * 1992-05-01 1993-11-11 British United Shoe Machinery Limited Absorbent material and a method of making same
DE4222207A1 (de) * 1992-07-07 1994-01-13 Rockwool Mineralwolle Verfahren zum Herstellen von Mineralfaserprodukten und Vorrichtung zur Durchführung des Verfahrens
WO1995006560A1 (en) * 1993-09-03 1995-03-09 British United Shoe Machinery Limited Material for use in incontinence products
DE4340562A1 (de) * 1993-03-21 1995-06-01 Dierig Holding Ag Verfahren zum Herstellen eines Vliesstoffes, danach hergestellter Vliesstoff und dessen Verwendung
WO1996036304A1 (en) * 1995-05-17 1996-11-21 British United Shoe Machinery Ltd. Wound dressing
US5677028A (en) * 1996-04-09 1997-10-14 Wearever Health Care Products, Llc Absorbent material
EP1067227A1 (de) * 1999-07-07 2001-01-10 Paradies GmbH Mischfaservlies
WO2014068290A1 (en) * 2012-10-31 2014-05-08 The Wool Packaging Company Limited Multi-layered non-woven insulating textile material

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1414994A (fr) * 1963-10-10 1965-10-22 Du Pont Procédé de fabrication par piquage aux aiguilles d'une nappe fibreuse utilisable pour le rembourrage, et produits obtenus par ce procédé
DE3515580A1 (de) * 1984-05-24 1985-11-28 Lenzing Ag, Lenzing Flexibles, adsorbierendes verbundmaterial

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1414994A (fr) * 1963-10-10 1965-10-22 Du Pont Procédé de fabrication par piquage aux aiguilles d'une nappe fibreuse utilisable pour le rembourrage, et produits obtenus par ce procédé
DE3515580A1 (de) * 1984-05-24 1985-11-28 Lenzing Ag, Lenzing Flexibles, adsorbierendes verbundmaterial

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993022486A1 (en) * 1992-05-01 1993-11-11 British United Shoe Machinery Limited Absorbent material and a method of making same
DE4222207A1 (de) * 1992-07-07 1994-01-13 Rockwool Mineralwolle Verfahren zum Herstellen von Mineralfaserprodukten und Vorrichtung zur Durchführung des Verfahrens
DE4222207C3 (de) * 1992-07-07 2002-04-04 Rockwool Mineralwolle Verfahren zum Herstellen von Mineralfaserprodukten und Vorrichtung zur Durchführung des Verfahrens
DE4340562A1 (de) * 1993-03-21 1995-06-01 Dierig Holding Ag Verfahren zum Herstellen eines Vliesstoffes, danach hergestellter Vliesstoff und dessen Verwendung
WO1995006560A1 (en) * 1993-09-03 1995-03-09 British United Shoe Machinery Limited Material for use in incontinence products
US5685247A (en) * 1993-09-03 1997-11-11 British United Shoe Machinery Limited Material for use in incontinence products
WO1996036304A1 (en) * 1995-05-17 1996-11-21 British United Shoe Machinery Ltd. Wound dressing
US5677028A (en) * 1996-04-09 1997-10-14 Wearever Health Care Products, Llc Absorbent material
US5879487A (en) * 1996-04-09 1999-03-09 Wearco Llc Absorbent material and method for making same
EP1067227A1 (de) * 1999-07-07 2001-01-10 Paradies GmbH Mischfaservlies
WO2014068290A1 (en) * 2012-10-31 2014-05-08 The Wool Packaging Company Limited Multi-layered non-woven insulating textile material

Also Published As

Publication number Publication date
EP0388062B1 (de) 1993-12-29
ATE99363T1 (de) 1994-01-15
DE69005488D1 (de) 1994-02-10
DE69005488T2 (de) 1994-04-21
EP0388062A3 (en) 1990-10-24
GB8905793D0 (en) 1989-04-26

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