GB1491937A - Paper-like material - Google Patents

Paper-like material

Info

Publication number
GB1491937A
GB1491937A GB1212475A GB1212475A GB1491937A GB 1491937 A GB1491937 A GB 1491937A GB 1212475 A GB1212475 A GB 1212475A GB 1212475 A GB1212475 A GB 1212475A GB 1491937 A GB1491937 A GB 1491937A
Authority
GB
United Kingdom
Prior art keywords
fibrils
olefin polymer
march
poly
polymer
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
GB1212475A
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.)
Montedison SpA
Original Assignee
Montedison SpA
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 Montedison SpA filed Critical Montedison SpA
Publication of GB1491937A publication Critical patent/GB1491937A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H5/00—Special paper or cardboard not otherwise provided for
    • D21H5/12—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials
    • D21H5/20—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of organic non-cellulosic fibres too short for spinning, with or without cellulose fibres
    • D21H5/202—Special paper or cardboard not otherwise provided for characterised by the use of special fibrous materials of organic non-cellulosic fibres too short for spinning, with or without cellulose fibres polyolefins
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/14—Polyalkenes, e.g. polystyrene polyethylene

Abstract

1491937 Polyolefin fibrils MONTEDISON SpH 24 March 1975 [25 March 1974] 12124/75 Heading C3P [Also in Division D2] A process for making a sheet, film, or other article of an olefin polymer comprises forming a component comprising at least 70% by wt. of fibrils of an olefin polymer having a M.W. of from 30,000 to 300,000 and a melt index of from 1À5 to 30, and sintering the fibrils by heating them at or above the softening temperature of the polymer until the superficial fibrous layers melt. In the examples a n-hexane solution of polyethylene was ejected through a nozzle to collide with a jet of dry saturated steam at an input speed of 470 m./sec. to produce fibrils having a mean length of 3À8 mm. and an average diameter of 36 Á. The olefin polymer may be a high or low density polyethylene, polypropylene predominantly consisting of isotactic macromolecules, poly α- butene, poly-4-methyl-1-pentene, an ethylene/ propylene copolymer of the block or random type, or a mixture thereof. The fibrils may be used alone or together with cellulosic fibres, other synthetic polymer fibres, or an inert filler or pigment.
GB1212475A 1974-03-25 1975-03-24 Paper-like material Expired GB1491937A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT4960674A IT1005878B (en) 1974-03-25 1974-03-25 SHEETS AND FILMS OF PAPER-LIKE POLYOLEPHIC MATERIAL AND PROCEDURE FOR OBTAINING THEM

Publications (1)

Publication Number Publication Date
GB1491937A true GB1491937A (en) 1977-11-16

Family

ID=11271153

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1212475A Expired GB1491937A (en) 1974-03-25 1975-03-24 Paper-like material

Country Status (9)

Country Link
JP (1) JPS50129654A (en)
BE (1) BE827070A (en)
CA (1) CA1062424A (en)
DE (1) DE2512964A1 (en)
ES (1) ES435934A1 (en)
FR (1) FR2265806B1 (en)
GB (1) GB1491937A (en)
IT (1) IT1005878B (en)
NL (1) NL7503416A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2658784A1 (en) * 1976-12-24 1978-07-13 Holtzmann & Cie Ag E LEAF-SHAPED EDITION AND MANUFACTURING PROCESS FOR IT
EP0107382A1 (en) * 1982-09-30 1984-05-02 Mitsui Petrochemical Industries, Ltd. Polyethylene synthetic pulp
EP0116414A1 (en) * 1983-01-26 1984-08-22 The Wiggins Teape Group Limited Paperlike sheet materials

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0009300A1 (en) * 1978-09-18 1980-04-02 Gulf Oil Corporation Process for preparing a fibril-reinforced polyolefin film and olefin polymer film so prepared
FR2449159A1 (en) * 1979-02-14 1980-09-12 Montedison Spa Filtering bags for infusion prepn. - made from sheet comprising mixt. of thermoplastic pref. polyolefin fibrils and cellulose fibres

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2658784A1 (en) * 1976-12-24 1978-07-13 Holtzmann & Cie Ag E LEAF-SHAPED EDITION AND MANUFACTURING PROCESS FOR IT
EP0107382A1 (en) * 1982-09-30 1984-05-02 Mitsui Petrochemical Industries, Ltd. Polyethylene synthetic pulp
EP0116414A1 (en) * 1983-01-26 1984-08-22 The Wiggins Teape Group Limited Paperlike sheet materials

Also Published As

Publication number Publication date
FR2265806B1 (en) 1977-04-15
FR2265806A1 (en) 1975-10-24
CA1062424A (en) 1979-09-18
DE2512964A1 (en) 1975-10-09
IT1005878B (en) 1976-09-30
BE827070A (en) 1975-09-24
JPS50129654A (en) 1975-10-14
ES435934A1 (en) 1976-12-16
NL7503416A (en) 1975-09-29

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414B Case decided by the comptroller ** grants allowed (sect. 14/1949)
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee