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1. WO1992016361 - NON-WOVEN FABRICS WITH FIBER QUANTITY GRADIENTS

Publication Number WO/1992/016361
Publication Date 01.10.1992
International Application No. PCT/US1991/006282
International Filing Date 03.09.1991
Chapter 2 Demand Filed 16.10.1992
IPC
D04H 1/56 2006.01
DTEXTILES; PAPER
04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
HMAKING 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
1Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
40from fleeces or layers composed of fibres without existing or potential cohesive properties
54by welding together the fibres, e.g. by partially melting or dissolving
56in association with fibre formation, e.g. immediately following extrusion of staple fibres
D04H 13/00 2006.01
DTEXTILES; PAPER
04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
HMAKING 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
13Other non-woven fabrics
CPC
D04H 1/4374
DTEXTILES; PAPER
04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL
1Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
40from fleeces or layers composed of fibres without existing or potential cohesive properties
42characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
4374using different kinds of webs, e.g. by layering webs
D04H 1/559
DTEXTILES; PAPER
04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL
1Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
40from fleeces or layers composed of fibres without existing or potential cohesive properties
54by welding together the fibres, e.g. by partially melting or dissolving
559the fibres being within layered webs
D04H 1/56
DTEXTILES; PAPER
04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL
1Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
40from fleeces or layers composed of fibres without existing or potential cohesive properties
54by welding together the fibres, e.g. by partially melting or dissolving
56in association with fibre formation, e.g. immediately following extrusion of staple fibres
D04H 3/03
DTEXTILES; PAPER
04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL
3Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
02characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
03at random
Applicants
  • SABEE, Reinhardt, N. [US]/[US]
Inventors
  • SABEE, Reinhardt, N.
Agents
  • FULLER, Henry, C.
Priority Data
672,54020.03.1991US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) NON-WOVEN FABRICS WITH FIBER QUANTITY GRADIENTS
(FR) NON-TISSES PRESENTANT DES GRADIENTS DE QUANTITE DE FIBRES
Abstract
(EN)
A process wherein the fibrous boundary junction (50, 52) of at least two fibrous layers (54, 56, 58) is accomplished by turbulent entanglement of the boundary fibers of adjacent gas-fiber streams or sprays of fibers (40, 42, 44) of at least two types during the travel of the fibers from their extrusion orifices to a collection surface. The resulting fabric (38) is also disclosed. This is achieved by simultaneously directing the heated expanding gas-fiber streams or sprays (40, 42, 44) onto the deposition surface (28) in a partially overlapped laydown pattern (46, 62) wherein predetermined portions of one stream of fibers are entangled with predetermined portions of a second stream of fibers to form a fiber quantity gradient of both streams of fibers across the depth of the boundary. The remaining portions of the two fiber streams form the stratified layers of the respective first and second fiber types.
(FR)
Procédé selon lequel la jonction (50, 52) des limites d'au moins deux couches fibreuses (54, 56, 58) est effectuée par l'entremêlement turbulent des fibres limites de jets ou de projections gaz-fibres adjacents (40, 42, 44) composés de fibres d'au moins deux types, au cours du passage des fibres de leurs orifices d'extrusion vers une surface de ramassage. On décrit aussi le tissu (38) ainsi produit. On fabrique ce tissu en amenant simultanément les jets gaz-fibres chauffés et qui vont s'élargissant (40, 42, 44), sur la surface de dépôt (28) en une configuration de dépôt à recouvrement partiel (46, 62), de sorte que des parties prédéterminées d'un jet de fibres sont entremêlées avec des parties prédéterminées d'un second jet de fibres pour produire un gradient de quantité de fibres dans les deux jets de fibres sur la profondeur de la zone frontière. Les parties restantes des deux jets de fibres forment les couches stratifiées composées des premier et second types de fibres respectifs.
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