GB689175A - Improvements in the heat-treatment of yarns having a basis of a thermoplastic material - Google Patents
Improvements in the heat-treatment of yarns having a basis of a thermoplastic materialInfo
- Publication number
- GB689175A GB689175A GB2935149A GB2935149A GB689175A GB 689175 A GB689175 A GB 689175A GB 2935149 A GB2935149 A GB 2935149A GB 2935149 A GB2935149 A GB 2935149A GB 689175 A GB689175 A GB 689175A
- Authority
- GB
- United Kingdom
- Prior art keywords
- yarns
- chamber
- heat
- yarn
- heated
- 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
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
- D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
- D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
- D02J1/229—Relaxing
-
- 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
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
-
- 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
- D01D10/00—Physical treatment of artificial filaments or the like during manufacture, i.e. during a continuous production process before the filaments have been collected
- D01D10/04—Supporting filaments or the like during their treatment
- D01D10/0436—Supporting filaments or the like during their treatment while in continuous movement
- D01D10/0481—Supporting filaments or the like during their treatment while in continuous movement the filaments passing through a tube
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
Abstract
<PICT:0689175/IV (a)/1> <PICT:0689175/IV (a)/2> In the heat-treatment, e.g. heat-stretching or heat - shrinking, of thermoplastic yarns, e.g. cellulose acetate yarns, the yarns 12 (Fig. 1) are passed continuously through a tubular chamber 8 arranged vertically or at an angle not exceeding 25 degrees to the vertical, the chamber walls being heated, e.g. electrically heated, to a temperature above the softening temperature of the yarn and an inert gas, e.g. air or nitrogen, being passed down the chamber at a substantially constant rate, e.g. by means of an injector 11 or by an ejector placed at the bottom of the chamber. The yarn may be passed downwardly or upwardly. The gas may be preheated by first passing it through a jacket 24 (Fig. 2), the outer wall 21 of which is heated. To effect stretching of the yarn, rollers 4 and 5 (Fig. 1) are provided. The chamber may be provided with steps or baffles to promote turbulence. The Provisional Specification states that the process is applicable to filaments and films, and to polyacrylonitrile yarns, and also to the cold drawing of synthetic linear polyamide, polyester and polyamino-triazole yarns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2935149A GB689175A (en) | 1949-11-16 | 1949-11-16 | Improvements in the heat-treatment of yarns having a basis of a thermoplastic material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2935149A GB689175A (en) | 1949-11-16 | 1949-11-16 | Improvements in the heat-treatment of yarns having a basis of a thermoplastic material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB689175A true GB689175A (en) | 1953-03-25 |
Family
ID=10290149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2935149A Expired GB689175A (en) | 1949-11-16 | 1949-11-16 | Improvements in the heat-treatment of yarns having a basis of a thermoplastic material |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB689175A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4420108A (en) | 1980-06-20 | 1983-12-13 | Palitex Project-Company Gmbh | Apparatus for the controlled feeding and taking-off of a thread into and out of a thread treatment section |
| US4549361A (en) * | 1982-12-10 | 1985-10-29 | Rieter-Scragg Limited | Yarn heater |
-
1949
- 1949-11-16 GB GB2935149A patent/GB689175A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4420108A (en) | 1980-06-20 | 1983-12-13 | Palitex Project-Company Gmbh | Apparatus for the controlled feeding and taking-off of a thread into and out of a thread treatment section |
| US4549361A (en) * | 1982-12-10 | 1985-10-29 | Rieter-Scragg Limited | Yarn heater |
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