GB793711A - Improved process and apparatus for the continuous curling of synthetic thermoplasticthreads or yarns - Google Patents
Improved process and apparatus for the continuous curling of synthetic thermoplasticthreads or yarnsInfo
- Publication number
- GB793711A GB793711A GB16970/55A GB1697055A GB793711A GB 793711 A GB793711 A GB 793711A GB 16970/55 A GB16970/55 A GB 16970/55A GB 1697055 A GB1697055 A GB 1697055A GB 793711 A GB793711 A GB 793711A
- Authority
- GB
- United Kingdom
- Prior art keywords
- yarn
- yarns
- degrees
- twist
- tension
- 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
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/02—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics by twisting, fixing the twist and backtwisting, i.e. by imparting false twist
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
Abstract
793,711. Crimping threads and controlling tension therein. NAAMLOOZE VENNOOTSCHAP ONDERZOEKINGSINSTITUUT RESEARCH. June 13, 1955 [Dec. 14, 1954], No. 16970/55. Classes 120(2) and 120(3) In a process for continuously curling yarns of synthetic thermoplastic polymerization or polycondensation products, e.g. polyvinyl chloride, polyethylene, polyvinylidene chloride, polyacrylonitrile polyamide, and polyesters, a curled formation is imparted to the yarn by falsetwisting during which the yarn is passed from a twist stop and under constant tension of less than 6 grms./100 denier and free of vibration around a heated polished rod according to a helical line with an angle of inclination of at least 70 degrees; and through a cooling zone. As shown, a yarn 2 is drawn from a package 1 by conical rollers 3 and 4 (the former driven), and passes through a guide 5, connected to one arm of a balance 6, and between toothed wheels 8 and 9, carried on the other arm thereof: pivotal movement of the balance (damped by a rod 10 the flattened end of which is immersed in a liquid 11), following a variation in tension of the yarn, causes the guide 5 to move the yarn to a corrective position on the roller 4. The yarn encircles an electrically heated resistance wire 12 according to the helical path and is led through a cooling zone to a false-twisting spindle 19 which it leaves in a ballooning manner via a cup 21 on a yarn-storage disc 20: the yarn is withdrawn by a roll 23 and wound on a roll 25 which may be replaced by a twisting device (not shown), optionally imparting twist opposite to that applied in the zone wherein the false-twist is fixed. The wire 12 may be enclosed in a removable box which eliminates the influence of undesired air currents, Fig. 2 (not shown). The Specification refers to yarns of 30-70 denier moving at speeds of 15-30 metres/ minute under tensions from 0.5 grms., heating paths (and cooling zones) of 70 m.m.- 140 m.m. length, encircling angles of 45- 860 degrees on rods of 0.2 m.m-125 m.m diameter maintained at temperatures of 160-170‹C. on helical lines having angles of inclination of 70-89 degrees, and a falsetwisting spindle speed of 54,000 r.p.m. Specification 779,800 is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL793711X | 1954-12-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB793711A true GB793711A (en) | 1958-04-23 |
Family
ID=19834487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB16970/55A Expired GB793711A (en) | 1954-12-14 | 1955-06-13 | Improved process and apparatus for the continuous curling of synthetic thermoplasticthreads or yarns |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB793711A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3050819A (en) * | 1958-06-03 | 1962-08-28 | Celanese Corp | Manufacture of bulked fiber |
-
1955
- 1955-06-13 GB GB16970/55A patent/GB793711A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3050819A (en) * | 1958-06-03 | 1962-08-28 | Celanese Corp | Manufacture of bulked fiber |
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