GB914714A - Non-woven fabrics - Google Patents

Non-woven fabrics

Info

Publication number
GB914714A
GB914714A GB4299260A GB4299260A GB914714A GB 914714 A GB914714 A GB 914714A GB 4299260 A GB4299260 A GB 4299260A GB 4299260 A GB4299260 A GB 4299260A GB 914714 A GB914714 A GB 914714A
Authority
GB
United Kingdom
Prior art keywords
filaments
poly
binder
lead
fabric
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
GB4299260A
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 GB914714A publication Critical patent/GB914714A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • B29C70/305—Spray-up of reinforcing fibres with or without matrix to form a non-coherent mat in or on a mould
    • 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
    • D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • B29K2105/08—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns
    • B29K2105/0854—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts of continuous length, e.g. cords, rovings, mats, fabrics, strands or yarns in the form of a non-woven mat
    • 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
    • Y10S264/00—Plastic and nonmetallic article shaping or treating: processes
    • Y10S264/76—Processes of uniting two or more parts
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2904—Staple length fiber
    • Y10T428/2905—Plural and with bonded intersections only
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2361—Coating or impregnation improves stiffness of the fabric other than specified as a size
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
    • Y10T442/2861—Coated or impregnated synthetic organic fiber fabric
    • Y10T442/2893—Coated or impregnated polyamide fiber fabric

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Paper (AREA)

Abstract

914,714. Non-woven fabrics; paper containing synthetic filaments. DU PONT DE NEMOURS & CO., E. I. Dec. 14, 1960 [Dec. 15, 1959], No. 42992/60. Classes 96 and 140. [Also in Group IX] A non-woven fabric comprises crimped synthetic organic polymer fibres having at least 30 crimps per inch which are bonded together at random fibre cross-over points by a synthetic organic polymer binder which is dispersed throughout the fabric, the average free fibre length between bond points being at least 1.25 times the average straight line distance between these bond points, the binder having an initial tensile modulus (Mi) of from 0.002 to 25 and being present in an amount such that it constitutes from 3 to 50% by weight of the fabric and such that percentage binder Î <SP>3</SP>#Mi(binder) < 40 the fabric having a density of from 0.28 to 0.7 grams per c.c., a drape stiffness of less than 1.0 inch and a sonic velocity transmission of 6% elongation of the fabric equal to at least 1.3 times its value at 0% elongation. The fibres may be deposited to form a batt or sheet from a slurry by paper-making technique or from a stream of gas or filaments may be continuously spun and deposited by apparatus as described below. As shown in Fig. 1, freshly formed filaments 1 issuing from spinneret 2 are passed through aspirator jet 3 to which is supplied air under pressure through inlet 4. The air flows concurrently with the filaments to attenuate, orient and forward them. Aspirate jet 3 is charged to a high positive potential by a source 5 of electrostatic potential through lead 6, the opposite pole being earthed through lead 7. Upon passing aspirator jet 3 the changed filaments 8 are collected into sheet 9 on receiver 10 which is supported by means indicated fragmentarily at 11. Receiver 10 is either earthed through lead 12 or is charged opposite to the charge of filaments 8 by lead 13 from source 5, the lead 12 to earth then being interrupted at switch 14. Under the influence of the electrical charge the individual filaments separate and lay down as a web in a completely random configuration and they also spontaneously crimp. Bonding of the web may be effected by spinning lowmelting binder filaments along with the filaments to be bound and then heating to fuse the lowmelting filaments, or by spraying or flocking fibrids on to the web during its formation. By the term " fibrid " is meant a non-rigid, wholly synthetic fibre-like or film-like polymeric particle capable of forming paper-like structures. Fibrid binders effect bonding by physical entanglement and also, if low-melting fibrids and heat are used, by fibrid fusion. Spontaneously elongatable fibres may be used which, upon thermal treatment, undergo a substantial increase in length, e.g. condensation polymers such as polyesters, polyamides and polymethanes and also acrylic and polyolefinic addition type polymers. Specified binders are butadiene-styrene copolymers; terpolymers of butadiene, styrene and acrylonitrile ; copolymers and terpolymers of poly(methyl acrylate) together with other acrylates and acrylic acid; a mixture of polymethyl methacrylate, glycidyl methacrylate and an acrylate ester copolymer ; a terpolymer of methyl acrylate, methyl methacrylate and acrylic acid; a copolymer of ethyl acrylate and acrylic acid; a mixture of polyhexylmethacrylate, polyethyl acrylate and polyacrylic acid; poly(ethylene/propylene) containing dicumyl peroxide; a reaction product of poly(tetramethylene ether) glycol, tolylene 2,4- diisocyanate, methylene bis-(4-phenyl-isocyanate) and hydrazine; polyhexamethylene adipamide, polycaproamide and copolymers thereof; poly-N-methoxy hexamethylene adipamide; polyethylene terephthalate, polyethylene isophthalate and copolymers thereof; poly(hexahydro-p-xylylene terephthalate) ; methanes formed by reacting piperazine and ethylene bischloroformate; and polyurethanes of hexamethylene diamine and ethylene bis-chloroformate. Specifications 841,230, 849,154, 849,156, 868,651 and 914,711 are referred to.
GB4299260A 1959-12-15 1960-12-14 Non-woven fabrics Expired GB914714A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US85964059 US3117055A (en) 1959-12-15 1959-12-15 Non-woven fabrica
FR874609A FR1306205A (en) 1959-12-15 1961-09-29 Nonwoven fibrous articles

Publications (1)

Publication Number Publication Date
GB914714A true GB914714A (en) 1963-01-02

Family

ID=42199172

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4299260A Expired GB914714A (en) 1959-12-15 1960-12-14 Non-woven fabrics

Country Status (9)

Country Link
US (2) US3117055A (en)
AT (1) AT294747B (en)
CH (1) CH446259A (en)
DE (1) DE1435113A1 (en)
DK (1) DK117763B (en)
ES (1) ES263194A1 (en)
FR (1) FR1306205A (en)
GB (1) GB914714A (en)
NL (1) NL122418C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107780053A (en) * 2017-04-19 2018-03-09 安徽工程大学 A kind of nano fibrous membrane, preparation method and applications
CN108589049A (en) * 2018-05-09 2018-09-28 安徽工程大学 A kind of aeroge electrospun fiber membrane and preparation method thereof with pH responses

Families Citing this family (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3338992A (en) * 1959-12-15 1967-08-29 Du Pont Process for forming non-woven filamentary structures from fiber-forming synthetic organic polymers
US3502763A (en) * 1962-02-03 1970-03-24 Freudenberg Carl Kg Process of producing non-woven fabric fleece
GB1073181A (en) * 1963-02-05 1967-06-21 Ici Ltd Bonded-web nonwoven products
GB993920A (en) * 1963-03-25 1965-06-02 Ici Ltd Non-woven fibrous products
US3326740A (en) * 1963-04-29 1967-06-20 Stevens & Co Inc J P Multi-directional strectchable nonwoven fabric
US3293718A (en) * 1963-07-01 1966-12-27 Du Pont Apparatus for forming non-woven web structures
US3314122A (en) * 1963-07-01 1967-04-18 Du Pont Apparatus for forming non-woven web structures
US3275732A (en) * 1963-07-05 1966-09-27 Fiber Industries Inc Process for preparing thick and thin novelty yarns
GB1103141A (en) * 1963-08-10 1968-02-14 Rasmussen O B Improved fibrous article and method of manufacturing same
DE1282590C2 (en) * 1963-10-25 1975-02-13 Lutravil Spinnvlies GmbH & Co., 8750 Kaiserslautern APPARATUS FOR THE MANUFACTURING OF ANNEALED FIBERS FROM ENDLESS POLYMERIC FIBERS
US3368934A (en) * 1964-05-13 1968-02-13 Du Pont Nonwoven fabric of crimped continuous polyethylene terephthalate fibers
US3459627A (en) * 1964-06-12 1969-08-05 Du Pont Nonwoven fabric with columnar bonds
US3272687A (en) * 1964-07-22 1966-09-13 Eastman Kodak Co Vapor permeable non-woven fibrous element
NL138974B (en) * 1964-08-17 1973-05-15 Du Pont NON-WOVEN SHEET TEXTILE MATERIAL.
DE1469501A1 (en) * 1964-12-24 1969-01-23 Glanzstoff Ag Process for the production of felt-like surface structures
US3438844A (en) * 1965-06-04 1969-04-15 Kendall & Co Spot-bonded nonwoven fabrics and their preparation
US3272898A (en) * 1965-06-11 1966-09-13 Du Pont Process for producing a nonwoven web
US3459631A (en) * 1965-11-24 1969-08-05 Kem Wove Ind Inc Bendable,high loft,bonded,non-woven,textile fabric
US3413179A (en) * 1966-12-28 1968-11-26 Dunlop Rubber Co Flexible sheet material and method for making same
DE2406321C3 (en) * 1974-02-09 1981-04-09 Fa. Carl Freudenberg, 6940 Weinheim Spunbond, consisting of randomly distributed, endless polyamide 6 threads
US4050977A (en) * 1974-09-19 1977-09-27 Fiberlok, Inc. Composite batt and method for producing same
US4092194A (en) * 1975-04-09 1978-05-30 E. I. Du Pont De Nemours And Company Process for making ceramic refractory oxide fiber-reinforced ceramic tube
US4047991A (en) * 1975-09-12 1977-09-13 Fiberlok, Inc. Polyester batt and method for producing such
US4053673A (en) * 1975-09-12 1977-10-11 Fiberlok, Inc. Glow-resistant batt and process for producing such
US4051294A (en) * 1975-09-12 1977-09-27 Fiberlok, Inc. Fiberous batt and method for producing such
US4053674A (en) * 1975-09-12 1977-10-11 Fiberlok, Inc. Glow-resistant batt and process for producing such
US4146417A (en) * 1976-05-04 1979-03-27 Johnson & Johnson Method for producing bonded nonwoven fabrics using ionizing radiation
US4340558A (en) * 1976-05-05 1982-07-20 Colgate-Palmolive Company Scrim reinforced plastic film
US4256524A (en) * 1976-11-26 1981-03-17 Monsanto Company Process for solvent bonding blended nonwoven fabrics and fabric produced therefrom
US4199388A (en) * 1978-05-15 1980-04-22 Geonautics, Inc. Method for making a multi-ply continuous filament ballistic helmet
US4296163A (en) * 1978-08-01 1981-10-20 Teijin Limited Fibrous composite having elasticity
DE2856852A1 (en) * 1978-12-30 1980-07-17 Hoechst Ag IDENTITY CARD
US4376675A (en) * 1979-05-24 1983-03-15 Whatman Reeve Angel Limited Method of manufacturing an inorganic fiber filter tube and product
US4486485A (en) * 1983-08-24 1984-12-04 Burlington Industries, Inc. Nonwoven textile structures with reversible stretch
US5194106A (en) * 1990-10-31 1993-03-16 E. I. Du Pont De Nemours And Company Method of making fiber reinforced porous sheets
US5134016A (en) * 1990-10-31 1992-07-28 E. I. Du Pont De Nemours And Company Fiber reinforced porous sheets
US5470639A (en) * 1992-02-03 1995-11-28 Fiberweb North America, Inc. Elastic nonwoven webs and method of making same
US5997989A (en) * 1992-02-03 1999-12-07 Bba Nonwovens Simpsonville, Inc. Elastic nonwoven webs and method of making same
US6171433B1 (en) 1996-07-17 2001-01-09 Iowa State University Research Foundation, Inc. Method of making polymer powders and whiskers as well as particulate products of the method and atomizing apparatus
DE10035679A1 (en) * 2000-07-21 2002-01-31 Inst Neue Mat Gemein Gmbh Nanoscale corundum powder, sintered bodies made therefrom and process for their production
US20040043212A1 (en) 2000-08-05 2004-03-04 Peter Grynaeus Thermal control nonwoven material
US6709623B2 (en) 2000-12-22 2004-03-23 Kimberly-Clark Worldwide, Inc. Process of and apparatus for making a nonwoven web
WO2003057454A1 (en) * 2001-12-31 2003-07-17 Owens Corning Method for producting lofty, acoustical and structural parts
US7488441B2 (en) * 2002-06-15 2009-02-10 Kimberly-Clark Worldwide, Inc. Use of a pulsating power supply for electrostatic charging of nonwovens
US20040077247A1 (en) * 2002-10-22 2004-04-22 Schmidt Richard J. Lofty spunbond nonwoven laminate
US20080122134A1 (en) * 2002-12-24 2008-05-29 Michael Rajendran S Headliners, door panels and interior trim parts that are lofty, acoustical and structural
US7504060B2 (en) 2003-10-16 2009-03-17 Kimberly-Clark Worldwide, Inc. Method and apparatus for the production of nonwoven web materials
US20050087288A1 (en) * 2003-10-27 2005-04-28 Haynes Bryan D. Method and apparatus for production of nonwoven webs
BRPI0511929A (en) * 2004-06-09 2008-01-29 Ind Composites Engineering Pty method for forming or curing polymer composites
AU2005251829C1 (en) * 2004-06-09 2011-02-03 Industrial Composites Engineering Pty Ltd Method for forming or curing polymer composites
DE102005030484B4 (en) 2005-06-28 2007-11-15 Carl Freudenberg Kg Elastic nonwoven fabric, process for its preparation and its use
CN113881134B (en) * 2020-07-01 2023-07-25 中国石油天然气股份有限公司 Composition for hydrophilic non-woven fabric and application thereof
US20220194287A1 (en) * 2020-12-21 2022-06-23 Jesse Tyler Lockamy Mountable fabric ashtray
CN112941724B (en) * 2021-01-29 2023-03-31 刘学谷 Antibacterial non-woven fabric production line and production process

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US705691A (en) * 1900-02-20 1902-07-29 William James Morton Method of dispersing fluids.
US2197896A (en) * 1937-02-15 1940-04-23 Du Pont Artificial wool
US2336745A (en) * 1941-12-20 1943-12-14 Fred W Manning Method and apparatus for making unwoven and composite fabrics
US2385873A (en) * 1942-04-18 1945-10-02 Carborundum Co Method of forming web material
US2416390A (en) * 1943-02-25 1947-02-25 Du Pont Free fall fiber
US2465996A (en) * 1946-10-04 1949-04-05 Bloch Godfrey Yarn and fabric
US2676128A (en) * 1951-06-18 1954-04-20 Du Pont Process of preparing nonwoven fabric and product
BE534423A (en) * 1953-12-24

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107780053A (en) * 2017-04-19 2018-03-09 安徽工程大学 A kind of nano fibrous membrane, preparation method and applications
CN107780053B (en) * 2017-04-19 2020-05-19 安徽工程大学 Nanofiber membrane, preparation method and application thereof
CN108589049A (en) * 2018-05-09 2018-09-28 安徽工程大学 A kind of aeroge electrospun fiber membrane and preparation method thereof with pH responses

Also Published As

Publication number Publication date
CH446259A (en) 1967-06-15
AT294747B (en) 1971-12-10
DK117763B (en) 1970-06-01
DE1435113A1 (en) 1969-10-09
FR1306205A (en) 1962-10-13
NL122418C (en)
ES263194A1 (en) 1961-07-01
US3117055A (en) 1964-01-07
NL259016A (en) 1964-04-27
UST859640I4 (en) 1900-01-01

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