GB795444A - Improvements relating to materials having an irregular fibrous structure and low bulk density - Google Patents

Improvements relating to materials having an irregular fibrous structure and low bulk density

Info

Publication number
GB795444A
GB795444A GB3087054A GB3087054A GB795444A GB 795444 A GB795444 A GB 795444A GB 3087054 A GB3087054 A GB 3087054A GB 3087054 A GB3087054 A GB 3087054A GB 795444 A GB795444 A GB 795444A
Authority
GB
United Kingdom
Prior art keywords
solution
orifices
cellulose
filament
speed
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
GB3087054A
Inventor
William Thomas Larman
Selwyn George Hawtin
John Downing
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.)
Acordis UK Ltd
Original Assignee
British Celanese Ltd
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 British Celanese Ltd filed Critical British Celanese Ltd
Priority to GB3087054A priority Critical patent/GB795444A/en
Publication of GB795444A publication Critical patent/GB795444A/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
    • D01D5/06—Wet spinning methods
    • 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
    • D01D5/22—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Multicomponent Fibers (AREA)

Abstract

A filament-forming substance is extruded into a coagulating liquid through a large number of closely spaced orifices and the mass of filaments so formed is withdrawn at a take-up speed which is less than half the extrusion speed. The filament-forming substance may be a solution of cellulose acetate in acetone and the coagulating bath may be an acetonewater solution or water which may be at a temperature of 2 DEG to 23 DEG C. and from which metal cations may have been removed. The spinning jet may comprise extrusion orifices arranged in one or more rows to produce a sheet or ribbon-like product or in an annulus to produce a tube or "collapsed" tube structure. The orifices may be circular, elliptical, rectangular, slot-like or of a cross-section having re-entrant angles. Some orifices may be of larger diameter than the others so that the ratio of the take-up speed to extrusion speed is above 0.8 to 1, thus giving a number of straight reinforcing filaments. The orifices from which straight filaments are produced may be separately supplied with spinning solution at a lower pressure or the supply of solution to them may be restricted by providing shallower or longer supply channels. After leaving the coagulating bath the material may be compressed, or heated, or both, e.g. by passing between one or more pairs of heated rollers, or treated with a solvent or swelling agent or both, e.g. acetic acid or ethyl acetate, to effect mutual adhesion of the fibres. Such solvent may also contain a cellulose ester or methyl cellulose, methyl ethyl cellulose or hydroxy ethyl cellulose. The filament-forming material may also be an acetic acid solution of cellulose triacetate, viscose or cuprammonium solutions, or a polyamide melt or hot solution of cellulose triacetate in cyclohexanone, which are extruded into quench baths. The product may be used for decorating clothing, as a braid or cord, as an upholstery material or as a heat insulant. Specifications 795,445 and 796,544 are referred to.
GB3087054A 1954-10-26 1954-10-26 Improvements relating to materials having an irregular fibrous structure and low bulk density Expired GB795444A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3087054A GB795444A (en) 1954-10-26 1954-10-26 Improvements relating to materials having an irregular fibrous structure and low bulk density

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3087054A GB795444A (en) 1954-10-26 1954-10-26 Improvements relating to materials having an irregular fibrous structure and low bulk density

Publications (1)

Publication Number Publication Date
GB795444A true GB795444A (en) 1958-05-21

Family

ID=10314417

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3087054A Expired GB795444A (en) 1954-10-26 1954-10-26 Improvements relating to materials having an irregular fibrous structure and low bulk density

Country Status (1)

Country Link
GB (1) GB795444A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3408435A (en) * 1966-12-13 1968-10-29 Hercules Inc Process for extruding elastic poly(epichlorohydrin) filaments
US4351683A (en) 1967-10-19 1982-09-28 Minnesota Mining And Manufacturing Company Method of forming web material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3408435A (en) * 1966-12-13 1968-10-29 Hercules Inc Process for extruding elastic poly(epichlorohydrin) filaments
US4351683A (en) 1967-10-19 1982-09-28 Minnesota Mining And Manufacturing Company Method of forming web material

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