GB895390A - A method of manufacturing synthetic filaments of polyvinyl alcohol of high quality - Google Patents
A method of manufacturing synthetic filaments of polyvinyl alcohol of high qualityInfo
- Publication number
- GB895390A GB895390A GB23303/59A GB2330359A GB895390A GB 895390 A GB895390 A GB 895390A GB 23303/59 A GB23303/59 A GB 23303/59A GB 2330359 A GB2330359 A GB 2330359A GB 895390 A GB895390 A GB 895390A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filaments
- polyvinyl alcohol
- spinning
- exceeding
- temperature
- 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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D01F6/14—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated alcohols, e.g. polyvinyl alcohol, or of their acetals or ketals
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
- Artificial Filaments (AREA)
Abstract
Semi-melt spun polyvinyl alcohol filaments, having a tenacity not exceeding 1,5g/denier after drying to less than 10% moisture, are drawn to 5 to 15 times their original length at a temperature above 140 DEG C., but not exceeding the melting point of the filaments. In "semi-melt" spinning a concentrated solution of the spinning material in a suitable solvent is made at a high temperature, so that on spinning into air the solution is coagulated by cooling, as well as by evaporation. The dried filaments may be subjected to a preliminary hot drawing if desired, and the filaments may be wound up at a speed of 0,3 to 1,0 times the linear extrusion speed of the spinning solution. After the hot drawing the filaments may be heated at constant length, or while free to shrink, suitably up to 20%, at a temperature not lower than that used in the hot drawing. In a preferred method, a liquid polyvinyl alcohol/water mixture is formed having a polyvinyl alcohol content of 30-65% by weight, preferably 40%, the polyvinyl alcohol having a degree of polymerization of 1,700, and is semi-melt spun under such conditions of temperature and spinneret-hole size as to avoid bubble formation. The filaments formed are dried, while avoiding drawing as far as possible, until their water content is below 10% by weight, to produce filaments of tenacity not exceeding 1,5 g/denier, which are then drawn to 5 to 15 times their original length at a temperature above 140 DEG C., and finally heat-set with 0 to 20% shrinkage. Specification 895,389 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP895390X | 1958-08-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB895390A true GB895390A (en) | 1962-05-02 |
Family
ID=13973603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB23303/59A Expired GB895390A (en) | 1958-08-19 | 1959-07-07 | A method of manufacturing synthetic filaments of polyvinyl alcohol of high quality |
Country Status (2)
| Country | Link |
|---|---|
| FR (1) | FR1232647A (en) |
| GB (1) | GB895390A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3440316A (en) * | 1963-12-05 | 1969-04-22 | Kuraray Co | Method of manufacturing improved polyvinyl alcohol films |
| CN113026126A (en) * | 2021-03-10 | 2021-06-25 | 厦门大学 | Polycarbosilane dry spinning method |
| CN113062004A (en) * | 2021-05-13 | 2021-07-02 | 永安市宝华林实业发展有限公司 | Method for preparing polyvinyl alcohol fiber by semi-molten wet method |
-
1959
- 1959-07-07 GB GB23303/59A patent/GB895390A/en not_active Expired
- 1959-07-30 FR FR801586A patent/FR1232647A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3440316A (en) * | 1963-12-05 | 1969-04-22 | Kuraray Co | Method of manufacturing improved polyvinyl alcohol films |
| CN113026126A (en) * | 2021-03-10 | 2021-06-25 | 厦门大学 | Polycarbosilane dry spinning method |
| CN113062004A (en) * | 2021-05-13 | 2021-07-02 | 永安市宝华林实业发展有限公司 | Method for preparing polyvinyl alcohol fiber by semi-molten wet method |
Also Published As
| Publication number | Publication date |
|---|---|
| FR1232647A (en) | 1960-10-11 |
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