GB595403A - Production of filaments from viscose having the capacity to crinkle - Google Patents
Production of filaments from viscose having the capacity to crinkleInfo
- Publication number
- GB595403A GB595403A GB15070/44A GB1507044A GB595403A GB 595403 A GB595403 A GB 595403A GB 15070/44 A GB15070/44 A GB 15070/44A GB 1507044 A GB1507044 A GB 1507044A GB 595403 A GB595403 A GB 595403A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filaments
- per cent
- tension
- viscose
- cellulose
- 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
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
- D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
Abstract
Artificial filaments having the capacity to crinkle when treated with water are made by forming a viscose solution having from 7 to 13 per cent of cellulose and from 7 to 13 per cent of caustic soda with a cellulose to caustic soda ratio of about 1, i.e. between 0.8 and 1.2, extruding into an acid spinning bath to form coagulated and regenerated cellulose filaments and subjecting the filaments to stretching at a tension of more than 0.25 gram per denier and preferably at as high a tension as possible without injury to the filaments. The filaments may be dried without appreciable shrinkage and thereafter washed with water or with a solution of a swelling agent, e.g. a 50 per cent aqueous solution of potassium iodide to produce the crinkle. Preferably, the viscose used has a salt point of from 4.0 to 7.5. Filaments with potentiality to crinkle when washed with water may be preserved in the straight state without mechanical stress by taking them directly from the spinning machine and washing free from acid with a 45 per cent aqueous solution of ammonium acetate. Crinkled filaments may be obtained having a filament denier of 1 to 7 or even lower and a strength of more than 3 grams per denier and an elongation of about 20 per cent in the fibre itself. In examples: (1) viscose with a composition of 10 per cent each of cellulose and caustic soda, and a salt index of 5.8 is spun into a common spin bath, and the filaments are stretched under a tension of 200 grams for 200 deniers, collected in a centrifugal pot, skeined and placed in water, whereupon they become crinkled; (2) viscose having 9 per cent each of cellulose and caustic soda at a salt index of 5.5 is spun into an acid bath and the filaments drawn at a tension of 350 grams for 400 deniers, cut into staples and placed in water; and (3) viscose having 10 per cent cellulose and 9 per cent caustic soda and a salt index of 6 is spun into an acid bath and the filaments stretched at a tension of 190 grams for 200 deniers with progressively increasing tension while in the spin bath, skeined and washed.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US595403XA | 1943-02-27 | 1943-02-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB595403A true GB595403A (en) | 1947-12-04 |
Family
ID=22023624
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB15070/44A Expired GB595403A (en) | 1943-02-27 | 1944-08-08 | Production of filaments from viscose having the capacity to crinkle |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB595403A (en) |
-
1944
- 1944-08-08 GB GB15070/44A patent/GB595403A/en not_active Expired
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