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GB1286345A - Non-woven plexifilament sheets - Google Patents

Non-woven plexifilament sheets

Info

Publication number
GB1286345A
GB1286345A GB24263/70A GB2426370A GB1286345A GB 1286345 A GB1286345 A GB 1286345A GB 24263/70 A GB24263/70 A GB 24263/70A GB 2426370 A GB2426370 A GB 2426370A GB 1286345 A GB1286345 A GB 1286345A
Authority
GB
United Kingdom
Prior art keywords
sheet
plexifilaments
area
perforations
perforated
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
GB24263/70A
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 GB1286345A publication Critical patent/GB1286345A/en
Expired 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
    • 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
    • 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
    • Y10T156/00—Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10—Methods of surface bonding and/or assembly therefor
    • Y10T156/1052—Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1056—Perforating lamina
    • Y10T156/1057—Subsequent to assembly of laminae
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • 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
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24826—Spot bonds connect components
    • 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
    • Y10T428/2907—Staple length fiber with coating or impregnation

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Laminated Bodies (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

1286345 Perforated, spot-bonded plexifilament sheets E I DU PONT DE NEMOURS & CO 19 May 1970 [8 July 1969] 24263/70 Heading D1R A porous, non-woven film-fibril sheet of random-laid, substantially continuous linear polyethylene or other crystalline polyolefine plexifilaments (see Specification 891943) is spot bonded by passing the sheet between the nip of two rolls. One has a heat-conducting surface carrying 200-800 hard bosses per 1 in 2, and comprising 5-10% of said area, the other has a resilient surface. A temperature of 150-185‹C ensures that the bonds extend for the thickness of the sheet. Multiple passes may be made. The sheet is then perforated by one or more passes through a needling loom or rotary pin perforator. Said perforations have an average cross-sectional area of 10<SP>-4</SP> sq. in. to 10<SP>-5</SP> sq. in. and comprise 3% to 10% of the sheet area. The needles or pins are of circular or triangular cross-section, and are barbless, so that the perforations are mainly produced by separating the plexifilaments rather than by tearing them. The sheet is formed by spreading the extruded plexifilaments using a contoured rotating baffle, passing them through a corona charging zone and collecting them on a moving belt in overlapping intersecting layers. The sheet is consolidated by calendering.
GB24263/70A 1969-07-08 1970-05-19 Non-woven plexifilament sheets Expired GB1286345A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US84004969A 1969-07-08 1969-07-08

Publications (1)

Publication Number Publication Date
GB1286345A true GB1286345A (en) 1972-08-23

Family

ID=25281325

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24263/70A Expired GB1286345A (en) 1969-07-08 1970-05-19 Non-woven plexifilament sheets

Country Status (4)

Country Link
US (1) US3619339A (en)
CA (1) CA934916A (en)
DE (1) DE7025718U (en)
GB (1) GB1286345A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4469734A (en) * 1981-11-24 1984-09-04 Kimberly-Clark Limited Microfibre web products

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3920874A (en) * 1970-12-16 1975-11-18 Du Pont Softened fibrillated sheet
GB1425116A (en) * 1972-03-20 1976-02-18 Du Pont Non-woven fabrics and method of making same
DE2328470C2 (en) * 1973-06-05 1975-06-12 Vereinigte Papierwerke Schickedanz & Co, 8500 Nuernberg Method for producing splice-net-reinforced nonwoven textile fabric
US4296499A (en) * 1979-05-29 1981-10-27 Theodore P. Patterson Blister preventing foot cover
US5698333A (en) * 1994-06-27 1997-12-16 Mobil Oil Corporation Multilayer film structures for use in the production of banknotes or the like
US20030032355A1 (en) * 2001-02-27 2003-02-13 Guckert Joseph R. Tougher, softer nonwoven sheet product
US20030082978A1 (en) * 2001-05-18 2003-05-01 Lim Hyun Sung Dry wipe
US20040011204A1 (en) * 2001-10-11 2004-01-22 Hendrik Both Electrostatic fibrous filter web and method of making same
DE10232147B4 (en) * 2002-07-16 2004-07-15 Corovin Gmbh Thermobonded and perforated fleece
EP1656474B1 (en) * 2003-04-03 2010-08-04 E.I. Du Pont De Nemours And Company Rotary process for forming uniform material
CN101529278A (en) * 2006-09-29 2009-09-09 E.I.内穆尔杜邦公司 Diffuse reflector comprising nonwoven sheet

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL271149A (en) * 1960-11-08 1900-01-01
US3081519A (en) * 1962-01-31 1963-03-19 Fibrillated strand
US3459627A (en) * 1964-06-12 1969-08-05 Du Pont Nonwoven fabric with columnar bonds
US3485711A (en) * 1966-06-23 1969-12-23 Du Pont Low-density web-like cushioning structure of cellular filamentary material
US3478141A (en) * 1966-08-29 1969-11-11 Du Pont Process for treating film-fibril sheets

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4469734A (en) * 1981-11-24 1984-09-04 Kimberly-Clark Limited Microfibre web products

Also Published As

Publication number Publication date
DE7025718U (en) 1970-10-29
US3619339A (en) 1971-11-09
CA934916A (en) 1973-10-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee