GB1000340A - Process for impregnating fibrous sheets - Google Patents

Process for impregnating fibrous sheets

Info

Publication number
GB1000340A
GB1000340A GB25987/63A GB2598763A GB1000340A GB 1000340 A GB1000340 A GB 1000340A GB 25987/63 A GB25987/63 A GB 25987/63A GB 2598763 A GB2598763 A GB 2598763A GB 1000340 A GB1000340 A GB 1000340A
Authority
GB
United Kingdom
Prior art keywords
webs
impregnated
web
fibres
dimethyl formamide
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.)
Expired
Application number
GB25987/63A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1000340A publication Critical patent/GB1000340A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/08—Heel stiffeners; Toe stiffeners
    • A43B23/16—Heel stiffeners; Toe stiffeners made of impregnated fabrics, plastics or the like
    • 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
    • D04H1/04—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres
    • D04H1/06—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres by treatment to produce shrinking, swelling, crimping or curling of fibres
    • 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
    • D04H1/58—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 by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—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 by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/935—Seal made of a particular material
    • Y10S277/944—Elastomer or plastic

Abstract

Solutions of polyurethane elastomers suitable for coating non-woven webs of fibres are produced by reacting polytetramethylene ether glycol having a molecular weight of about 1000 with tolylene-2,4-diisocyanate and reacting the hydroxyl terminated dimer with methylene-bis-(4-phenyl isocyanate) to produce a prepolymer having isocyanate groups which is dissolved in dimethyl formamide and reacted with a chain extender comprising N-methyl-bis-amino propylamine and hydrazine hydrate dissolved in dimethyl formamide to produce the polyurethane. Specification 905,824 is referred to.ALSO:Non-woven webs of heat-shrinkable fibres capable of shrinking 20-90% of their planar area and having a pattern on their surfaces are impregnated with an aqueous dispersion of a polymeric material, the impregnant coagulated and the impregnated webs then subjected to an elevated temperature to cause them to shrink 20-70% of their planar area. 100-400% by weight of the fibres of the dry impregnant which may be neoprene, butyl rubber, a copolymer of butadiene and acrylonitrile or styrene, natural rubber, plasticized polyvinyl chloride, an oil modified alkyd resin or an acrylic or methacrylic resin, may be applied, and coagulation may be effected by freeze coagulating, immersing the web in an aqueous solution of an electrolyte, heating the impregnated web, or allowing the impregnating composition to dry at room temperature. The pattern may be applied to the webs by needle punching. Shrinking may be effected by immersing the impregnated web in water at 63 DEG -93 DEG C. Webs comprising polyethylene terephthalate, cellulose acetate, nylon, acrylonitrilevinyl chloride copolymer, polyethylene, polypropylene, polystyrene or polytetrafluoroethylene fibres alone or in admixture with cotton, jute, flax or wool may be treated. The webs which may be used in the manufacture of shoe uppers, gaskets, diaphragms, bearing seals, fuel pumps, upholstery, pocket books, men's and ladies' jackets and paulins may subsequently be coated with a composition comprising a polyurethane elastomer and polyvinyl chloride dissolved in dimethyl formamide and dye. Specification 905,824 is referred to.ALSO:Non-woven webs of heat-shrinkable fibres capable of shrinking 20-90% of their planar area and having a pattern on their surfaces are impregnated with an aqueous dispersion of a polymeric material, the impregnant coagulated and the impregnated webs subjected to an elevated temperature to cause them to shrink 20-70% of their planar area, and are then coated with a composition comprising a polyurethane elastomer and polyvinyl chloride dissolved in dimethyl formamide, immersed in water, steamed and dried. 100-400% by weight of the fibres of the dry impregnant which may be neoprene, butyl rubber, a copolymer of butadiene and acrylonitrile or styrene, natural rubber, plasticized polyvinyl chloride, an oil modified alkyd resin or an acrylic or methacrylic resin, may be applied, and coagulation may be effected by freeze coagulating, immersing the web in an aqueous solution of an electrolyte, heating the impregnated web, or allowing the impregnating composition to dry at room temperature. The pattern may be applied to the webs by needle punching. Webs comprising polyethylene terephthalate, cellulose acetate, nylon, acrylonitrilevinyl chloride copolymer, polyethylene, polypropylene, polystyrene or polytetrafluoroethylene fibres alone or in admixture with cotton, jute, flax or wool may be treated. When the web coated with the composition comprising a polyurethane elastomer and polyvinyl chloride dissolved in dimethyl formamide is immersed in water the coating solution is coagulated and converted into a gelatinous polymeric layer having a cellular structure of interconnecting micropores and substantially all of the dimethyl formamide is extracted from the solution coating. After steaming and drying the coating obtained is highly permeable to water vapour. The coated web may be dyed and scoured and used in the production of shoe uppers. Specification 905,824 is referred to.
GB25987/63A 1962-07-13 1963-07-01 Process for impregnating fibrous sheets Expired GB1000340A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US209791A US3228786A (en) 1962-07-13 1962-07-13 Process for impregnating fibrous sheets

Publications (1)

Publication Number Publication Date
GB1000340A true GB1000340A (en) 1965-08-04

Family

ID=22780293

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25987/63A Expired GB1000340A (en) 1962-07-13 1963-07-01 Process for impregnating fibrous sheets

Country Status (5)

Country Link
US (1) US3228786A (en)
BE (1) BE634892A (en)
DE (1) DE1444166A1 (en)
GB (1) GB1000340A (en)
NL (1) NL294780A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3376158A (en) * 1966-03-16 1968-04-02 Du Pont Process for producing microporous polymeric structures by freeze-coagulation of latices
DE2840154C2 (en) * 1978-09-15 1982-12-09 Goetze Ag, 5093 Burscheid Soft gasket sheet, in particular cylinder head gasket for internal combustion engines
US4306729A (en) * 1979-09-26 1981-12-22 Nippon Oil Seal Industry Co., Ltd. Sealing material
GB8903321D0 (en) * 1989-02-14 1989-04-05 Ici Plc Metal mesh and production thereof
US5916636A (en) * 1998-03-17 1999-06-29 Milliken & Company Method of making a polyurethane suede-like fabric/elastomer composite
US6599849B1 (en) 2000-06-23 2003-07-29 Milliken & Company Knitted fabric-elastomer composite preferable for transfer or film-coating
US6475562B1 (en) 2000-06-23 2002-11-05 Milliken & Company Textile-lastomer composite preferable for transfer on film coating and method of making said composite
CA2411075A1 (en) * 2000-06-23 2002-01-03 Milliken & Company A woven fabric-elastomer composite preferable for transfer or film coating
KR101518147B1 (en) 2010-10-28 2015-05-06 코비디엔 엘피 Material removal device and method of use
CN112726224B (en) * 2020-12-24 2022-07-15 上海华峰超纤科技股份有限公司 Preparation method of waterborne polyurethane base fabric and product thereof
USD989961S1 (en) 2021-04-30 2023-06-20 Sonex Health, Inc. Soft tissue cutting device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2444124A (en) * 1944-03-04 1948-06-29 American Viscose Corp Method of freeze-drying regenerated cellulose
NL189176B (en) * 1956-07-13 1900-01-01 Hisamitsu Pharmaceutical Co PLASTER BASED ON A SYNTHETIC RUBBER.
DE1068660B (en) * 1954-10-01 1959-11-12
US2930106A (en) * 1957-03-14 1960-03-29 American Felt Co Gaskets
US2973284A (en) * 1957-04-30 1961-02-28 Goodrich Co B F Leather-like material
US3100721A (en) * 1961-02-21 1963-08-13 Du Pont Process for producing microporous films and coatings
US3067482A (en) * 1958-07-03 1962-12-11 Du Pont Sheet material and process of making same
BE614744A (en) * 1961-03-06

Also Published As

Publication number Publication date
DE1444166A1 (en) 1969-03-06
BE634892A (en) 1900-01-01
NL294780A (en)
US3228786A (en) 1966-01-11

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