GB730501A - Improved process for the manufacture of linear synthetic polymer yarns - Google Patents
Improved process for the manufacture of linear synthetic polymer yarnsInfo
- Publication number
- GB730501A GB730501A GB7071/53A GB707153A GB730501A GB 730501 A GB730501 A GB 730501A GB 7071/53 A GB7071/53 A GB 7071/53A GB 707153 A GB707153 A GB 707153A GB 730501 A GB730501 A GB 730501A
- Authority
- GB
- United Kingdom
- Prior art keywords
- yarn
- polyamide
- roller
- per cent
- final
- 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
- D02J1/224—Selection or control of the temperature during stretching
-
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Artificial Filaments (AREA)
Abstract
<PICT:0730501/IV (a)/1> In order to obtain a package of yarn of a synthetic linear polyamide having a predetermined final tenacity and a predetermined final breaking elongation measured on the yarn as it is unwound from the package, a polyamide yarn is subjected to cold-drawing at substantially room temperature between a cold low-speed advancing device and a high-speed advancing device a p part at least of which is heated to a temperature substantially comprised between 80 DEG and 40 DEG C. below the melting point of the polyamide, the drawing ratio, defined by the ratio of the linear speeds of the two advancing devices, being only slightly higher than the drawing ratio corresponding to the final tenacity and breaking elongation after packaging. The polyamide may be that obtained by polycondensation of amino-caproic acid. As shown, the yarn is cold drawn as it passes between the two roller systems 11, 12. The main roller 14, or both rollers, of the system 12 is heated, e.g. by means of electrical resistances, to a temperature which, in the case of a polyamide from amino-caproic acid, may be 170 DEG C. If a 30 denier, 10 filament yarn of a final tenacity of 4.5 grams per denier and a breaking elongation of 20 per cent, corresponding to a final drawing ratio of 380 per cent, is required, the actual drawing ratio imparted by the roller systems 11, 12 should be made slightly higher than 380 per cent, e.g. 383 per cent, the excess being adjusted according to the nature of the polyamide, the characteristics of the yarn, the temperature of the hot roller and the number of times the yarn is wrapped about that roller. Instead of the roller systems 11, 12, systems of thread-advancing cages, arranged eccentrically or askew or interdigitating with respect to one another, may be provided for stretching the yarn.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT730501X | 1952-03-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB730501A true GB730501A (en) | 1955-05-25 |
Family
ID=11315218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7071/53A Expired GB730501A (en) | 1952-03-26 | 1953-03-13 | Improved process for the manufacture of linear synthetic polymer yarns |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE518696A (en) |
| FR (1) | FR1073084A (en) |
| GB (1) | GB730501A (en) |
| NL (1) | NL177169C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3917338A1 (en) * | 1989-05-27 | 1990-11-29 | Didier Eng | METHOD AND DEVICE FOR PRODUCING SMOOTH YARN FROM THERMOPLASTIC ARTIFASTS, PARTICULARLY SMOOTH POLYESTER YARN |
-
0
- BE BE518696D patent/BE518696A/xx unknown
- NL NLAANVRAGE7809213,A patent/NL177169C/en active
-
1953
- 1953-03-13 GB GB7071/53A patent/GB730501A/en not_active Expired
- 1953-03-19 FR FR1073084D patent/FR1073084A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3917338A1 (en) * | 1989-05-27 | 1990-11-29 | Didier Eng | METHOD AND DEVICE FOR PRODUCING SMOOTH YARN FROM THERMOPLASTIC ARTIFASTS, PARTICULARLY SMOOTH POLYESTER YARN |
Also Published As
| Publication number | Publication date |
|---|---|
| BE518696A (en) | |
| NL177169C (en) | |
| FR1073084A (en) | 1954-09-20 |
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