GB1387298A - Process of preparing filaments from synthetic thermoplastic and products made from such filaments - Google Patents

Process of preparing filaments from synthetic thermoplastic and products made from such filaments

Info

Publication number
GB1387298A
GB1387298A GB2765572A GB2765572A GB1387298A GB 1387298 A GB1387298 A GB 1387298A GB 2765572 A GB2765572 A GB 2765572A GB 2765572 A GB2765572 A GB 2765572A GB 1387298 A GB1387298 A GB 1387298A
Authority
GB
United Kingdom
Prior art keywords
nucleating agent
melt
polymer
filaments
yarns
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
GB2765572A
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.)
Stamicarbon BV
Original Assignee
Stamicarbon BV
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 Stamicarbon BV filed Critical Stamicarbon BV
Publication of GB1387298A publication Critical patent/GB1387298A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/42—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
    • D01D5/423—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments by fibrillation of films or filaments
    • 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
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/46—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length
    • B29C44/50—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying
    • B29C44/505—Feeding the material to be shaped into an open space or onto moving surfaces, i.e. to make articles of indefinite length using pressure difference, e.g. by extrusion or by spraying extruding the compound through a flat die
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F1/00—General methods for the manufacture of artificial filaments or the like
    • D01F1/02—Addition of substances to the spinning solution or to the melt
    • D01F1/10—Other agents for modifying properties
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2007/00—Flat articles, e.g. films or sheets

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Artificial Filaments (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Abstract

1387298 Film fibrillation STAMICARBON NV 13 June 1972 [16 June 1971] 27655/72 Heading B5B [Also in Divisions C3 and D1] Filaments are made by extruding a melt of a thermoplastic polymer mixed with a foaming agent, and a nucleating agent, the said nucleating agent having a solidification point higher than that of the said thermoplastic polymer but below the decomposition temperature of the polymer, extruding the mixture to provide a foamed film, and stretching and fibrillating the said foamed film to provide filaments thereof. When the temperature of the polymer melt drops below the solidification point of the nucleating agent, a solid phase of the nucleating agent becomes finely divided in the melt, and the fine solid particles so formed serve as nuclei in the formation of the cells in the foam by the gas released from the foaming agent on extrusion of the melt mixture. Hence a foam is obtained having a large number of very small cells of uniform size uniformly distributed. The nucleating agent may be a microcrystalline wax, incorporated in the polymer melt in a proportion of from 0À5 to 5À0% by weight of the polymer. In the example, a stretched strip so made is fibrillated and cut to yarns 1À5 mm. wide, having a titre of 17 tex, a tensile strength of 18 g./tex and an elongation at rupture of 5%. The yarns may be twisted at 100 r.p.m. and knitted to a hose. Knitted products so made show very low specific density, high heat-insulating capacity and a soft feel, and are useful in clothing, as a wool substitute, in making curtains, and as a shrink-effect component in carpet yarns.
GB2765572A 1971-06-16 1972-06-13 Process of preparing filaments from synthetic thermoplastic and products made from such filaments Expired GB1387298A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7108236A NL7108236A (en) 1971-06-16 1971-06-16

Publications (1)

Publication Number Publication Date
GB1387298A true GB1387298A (en) 1975-03-12

Family

ID=19813396

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2765572A Expired GB1387298A (en) 1971-06-16 1972-06-13 Process of preparing filaments from synthetic thermoplastic and products made from such filaments

Country Status (7)

Country Link
JP (1) JPS526373B1 (en)
BE (1) BE784910A (en)
DE (1) DE2228774A1 (en)
FR (1) FR2142005B1 (en)
GB (1) GB1387298A (en)
IT (1) IT958591B (en)
NL (1) NL7108236A (en)

Also Published As

Publication number Publication date
JPS526373B1 (en) 1977-02-22
FR2142005B1 (en) 1977-12-23
FR2142005A1 (en) 1973-01-26
NL7108236A (en) 1972-12-19
DE2228774A1 (en) 1972-12-21
BE784910A (en) 1972-12-15
IT958591B (en) 1973-10-30

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee