GB689407A - Spinning artificial filamentary materials - Google Patents
Spinning artificial filamentary materialsInfo
- Publication number
- GB689407A GB689407A GB27677/50A GB2767750A GB689407A GB 689407 A GB689407 A GB 689407A GB 27677/50 A GB27677/50 A GB 27677/50A GB 2767750 A GB2767750 A GB 2767750A GB 689407 A GB689407 A GB 689407A
- Authority
- GB
- United Kingdom
- Prior art keywords
- zone
- filaments
- drying
- acetate
- solution
- 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
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
- D01D5/04—Dry spinning methods
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
Abstract
<PICT:0689407/IV (a)/1> Filaments, yarns, tow, ribbon and like products are made by extruding a solution of a filament-forming material in a volatile solvent through a spinneret into an evaporative medium in a spinning cell comprising a setting zone nearest to and a drying zone furthest from the spinneret, causing the medium to flow through the setting zone in counter-current to the extruded solution, whereby a large proportion of the solvent is evaporated and the solution is set in the form of filaments, causing the medium to flow through the drying zone concurrently with the filaments, whereby most or all of the remaining solvent is evaporated, and drawing the filaments from the drying zone at a rate of over 600 metres per minute, the rate of flow of the medium through the drying zone being such that the force required to draw the filaments from the drying zone does not exceed 0.2 gram per denier and is preferably between 0.02 and 0.2 gram per denier. The filamentary material is preferably cellulose acetate but may be cellulose propionate, butyrate, acetate propionate or acetate butyrate, ethyl cellulose, polyvinyl acetate, polyvinyl chloride, or a vinyl acetate vinyl chloride copolymer. The volatile solvent is preferably acetone but may be ethylene dichloride, methylene chloride and ethyl alcohol, or chloroform and methyl or ethyl alcohol. The evaporative medium may be air, nitrogen or carbon dioxide. As shown, a heated acetone solution of cellulose acetate is fed under pressure to a spinneret 41 from which the solution is extruded in the form of filaments 44. The upper part 45 of the spinning cell 46 constitutes the setting zone while the lower and much longer part 57 constitutes the drying zone. Air is drawn through the zone 45 from the inlet duct 48 to the exhaust duct 47 leading to a solvent recovery plant and is heated by the coil 49. The lower end of the zone 45 is closed by means of a plate 53 having an aperture 56 for the passage of the filaments and carried by legs 54. The zone 57 is unheated and is considerably smaller in cross-section than the zone 45. The filaments 44, after passing from the aperture 56 through the open air, enter the zone 57 through the opening 58 and are drawn by means of the feed roll 63 through the chamber 59 and the aperture 62. Air is drawn into the zone 57 through the opening 58 and is sucked out through the exhaust duct 65. The filaments in their travel from the aperture 56 to the opening 58 may pass through a longitudinally split tube 66 and the upper end of the zone 57 may be provided with an air inlet 64. The spinning speed may be 800 metres per minute or more and 60-80 per cent of the acetone may be removed in the zone 45. In a modification the setting and drying zones are joined by a very short narrow duct through which the filaments pass and the drying zone is provided near its upper end with an air inlet duct. The process enables high spinning speeds to be used without substantial reduction in the quality of the filaments or increase in the occurrence of filament breakages. Specification 683,403 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US126745A US2588584A (en) | 1949-11-12 | 1949-11-12 | Spinning artificial filamentary materials |
Publications (1)
Publication Number | Publication Date |
---|---|
GB689407A true GB689407A (en) | 1953-03-25 |
Family
ID=22426450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB27677/50A Expired GB689407A (en) | 1949-11-12 | 1950-11-13 | Spinning artificial filamentary materials |
Country Status (2)
Country | Link |
---|---|
US (1) | US2588584A (en) |
GB (1) | GB689407A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2311484A (en) * | 1996-03-27 | 1997-10-01 | Viscofil Consolidated Corp | Solvent recovery in dope spinning process |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE562946A (en) * | 1953-12-28 | |||
US2843449A (en) * | 1954-04-13 | 1958-07-15 | Eastman Kodak Co | Dry spinning process |
US2825120A (en) * | 1954-05-11 | 1958-03-04 | Eastman Kodak Co | Synthetic filament |
US2838364A (en) * | 1955-01-07 | 1958-06-10 | Eastman Kodak Co | Dry spinning process |
US2750653A (en) * | 1955-01-19 | 1956-06-19 | Eastman Kodak Co | Yarn structure |
US3056163A (en) * | 1955-05-18 | 1962-10-02 | American Viscose Corp | Spinneret |
GB797194A (en) * | 1955-07-11 | 1958-06-25 | British Celanese | Improvements in the manufacture of artificial filamentary materials |
US3077633A (en) * | 1958-05-15 | 1963-02-19 | Eastman Kodak Co | Apparatus for spinning synthetic filaments and fibers of increased bulk and stiffness |
US3157540A (en) * | 1960-05-31 | 1964-11-17 | Engelhard Ind Inc | High pressure process for improving the mechanical properties of metals |
GB979402A (en) * | 1962-05-18 | 1965-01-01 | Algemene Kunstzijde Unie Nv | Improvements in or relating to the heat treatment of films |
DE3923139A1 (en) * | 1989-07-13 | 1991-01-17 | Akzo Gmbh | METHOD FOR PRODUCING POLYAETHYLENE THREADS BY QUICK SPINNING OF ULTRA HIGH MOLECULAR POLYAETHYLENE |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR741912A (en) * | 1931-09-29 | 1933-02-23 | ||
GB453869A (en) * | 1935-03-20 | 1936-09-21 | Henry Dreyfus | Improvements in the manufacture of artificial filaments, ribbons, films and like materials |
-
1949
- 1949-11-12 US US126745A patent/US2588584A/en not_active Expired - Lifetime
-
1950
- 1950-11-13 GB GB27677/50A patent/GB689407A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2311484A (en) * | 1996-03-27 | 1997-10-01 | Viscofil Consolidated Corp | Solvent recovery in dope spinning process |
Also Published As
Publication number | Publication date |
---|---|
US2588584A (en) | 1952-03-11 |
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