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1. WO2020107422 - METHODS OF CREATING SOFT AND LOFTY NONWOVEN WEBS

Publication Number WO/2020/107422
Publication Date 04.06.2020
International Application No. PCT/CN2018/118638
International Filing Date 30.11.2018
IPC
D04H 1/54 2012.01
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
CPC
D01D 5/0985
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
5Formation of filaments, threads, or the like
08Melt spinning methods
098with simultaneous stretching
0985by means of a flowing gas (e.g. melt-blowing)
D01F 8/06
DTEXTILES; PAPER
01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
8Conjugated, i.e. bi- or multicomponent, artificial filaments or the like; Manufacture thereof
04from synthetic polymers
06with at least one polyolefin as constituent
D04H 1/4291
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
4282Addition polymers
4291Olefin series
D04H 1/4382
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
4382Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
D04H 1/544
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
542Adhesive fibres
544Olefin series
D04H 3/163
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
08characterised by the method of strengthening or consolidating
16with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
163at spaced points or locations
Applicants
  • THE PROCTER & GAMBLE COMPANY [US]/[US]
  • XU, Han [US]/[CN] (US)
  • ERDEM, Gueltekin [DE]/[CN] (US)
Inventors
  • XU, Han
  • ERDEM, Gueltekin
Agents
  • LIU, SHEN & ASSOCIATES
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHODS OF CREATING SOFT AND LOFTY NONWOVEN WEBS
(FR) PROCÉDÉS DE CRÉATION DE BANDES NON TISSÉES PRÉSENTANT SOUPLESSE ET GONFLANT
Abstract
(EN)
A method of creating a soft and lofty continuous fiber nonwoven web is provided. The method includes providing two molten polymer components having different melting temperatures to a spinneret defining a plurality of orifices, and flowing a fluid intermediate the spinneret and a moving porous member. The moving porous member is positioned below the spinneret. The method includes using the fluid to draw or push the two molten polymer components, in a direction that is toward the moving porous member, through at least some of the plurality of orifices to form a plurality of individual bi-component continuous fiber strands. The method includes depositing the continuous fiber strands on the moving porous member at a first location to create an intermediate continuous fiber nonwoven web, and removing and/or diverting some of the fluid proximate to the first location to maintain loft and softness in the deposited intermediate continuous fiber nonwoven web.
(FR)
L'invention concerne un procédé de création d'une bande non tissé à fibres continues présentant souplesse et gonflant. Le procédé comprend la fourniture de deux composants polymères fondus ayant différentes températures de fusion à une filière définissant une pluralité d'orifices, et l'écoulement d'un fluide entre la filière et un élément poreux mobile. L'élément poreux mobile est placé en dessous de la filière. Le procédé comprend l'utilisation du fluide pour tirer ou pousser les deux composants polymères fondus, dans une direction qui va vers l'élément poreux mobile, à travers au moins certains orifices de la pluralité d'orifices pour former une pluralité de brins de fibres continues à deux composants individuels. Le procédé comprend le dépôt des brins de fibre continus sur l'élément poreux mobile à un premier emplacement pour créer une bande de nontissé à fibres continues intermédiaire, et le retrait et/ou la déviation d'une partie du fluide à proximité du premier emplacement pour maintenir le gonflant et la souplesse dans la bande non tissée de fibre continue intermédiaire déposée.
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