GB718369A - Process for the production of highly crimped regenerated cellulose fibres from viscose - Google Patents
Process for the production of highly crimped regenerated cellulose fibres from viscoseInfo
- Publication number
- GB718369A GB718369A GB12195/51A GB1219551A GB718369A GB 718369 A GB718369 A GB 718369A GB 12195/51 A GB12195/51 A GB 12195/51A GB 1219551 A GB1219551 A GB 1219551A GB 718369 A GB718369 A GB 718369A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bath
- filaments
- viscose
- per cent
- grams
- 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
- D01D5/22—Formation of filaments, threads, or the like with a crimped or curled structure; with a special structure to simulate wool
-
- 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
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Artificial Filaments (AREA)
Abstract
Highly crimped regenerated cellulose fibres are produced from viscose by (1) extruding viscose into a coagulating bath or the first of two or more coagulating baths, the specific electrical conductivity of this bath or of the first bath bearing a ratio to that of the viscose of 0.85 : 1 to 1 : 0.85; (2) stretching the filaments so produced, while they travel through an air or steam bath or a further coagulating bath, to such an extent that the elastic limit of the filaments is just not exceeded; and (3) allowing the filaments to contract freely in a tension-releasing bath, the specific conductivity of which bears a ratio to the specific conductivity of the electrolyte contained in the filaments when they enter the releasing bath of 0.7:1 to 1 : 0.7. The coagulating bath may contain 25-980 grams per litre of sulphuric acid, the corresponding concentrations of sodium hydroxide in the viscose being 4.8-8.5 per cent. In an example viscose of 12-13 Hottenroth degrees of ripeness and containing 8 per cent. cellulose, 7 per cent. of caustic soda and 35 per cent. of carbon bisulphide is extruded into a coagulating bath at 43 DEG C. containing, per litre, 115 grams of sulphuric acid, 280 grams of sodium sulphate, and 5 grams of zinc sulphate, to form filaments which are elongated 28 per cent. by passage at 70 DEG C. between two pairs of rollers through the vapour space above a boiling water bath. The filaments are cut and the cut pieces are allowed to shrink freely in a water bath at 70 DEG C. In other examples filaments similarly produced are allowed to shrink freely in a detensioning bath in the uncut condition.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE314607X | 1948-10-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB718369A true GB718369A (en) | 1954-11-10 |
Family
ID=6146833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12195/51A Expired GB718369A (en) | 1948-10-01 | 1951-05-24 | Process for the production of highly crimped regenerated cellulose fibres from viscose |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH314607A (en) |
| GB (1) | GB718369A (en) |
-
1951
- 1951-05-24 GB GB12195/51A patent/GB718369A/en not_active Expired
- 1951-06-05 CH CH314607D patent/CH314607A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH314607A (en) | 1956-06-30 |
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