GB904008A - Wet spinning of polyethylene - Google Patents
Wet spinning of polyethyleneInfo
- Publication number
- GB904008A GB904008A GB3317760A GB3317760A GB904008A GB 904008 A GB904008 A GB 904008A GB 3317760 A GB3317760 A GB 3317760A GB 3317760 A GB3317760 A GB 3317760A GB 904008 A GB904008 A GB 904008A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bath
- filaments
- polyethylene
- stretch
- quench
- 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
- D01D5/06—Wet spinning methods
-
- 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
- D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
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
Polyethylene filaments are produced by extruding a heated solution of the polymer in a volatile solvent downwards through a spinneret through the atmosphere for a distance sufficient to effect evaporation of a small proportion of the solvent but not so great as to cause the polymer to crystallize, introducing the extruded polymer into a quench or precipitating bath to form the filaments, the temperature of the bath being lower than that of the solution, drawing the filaments as they are formed in the bath, thereafter passing the filaments from the bath to a heated aqueous bath and further drawing the filaments in this bath, the stretch ratio in the latter being greater than the stretch ratio in the precipitating bath. In general suitable polyethylenes have a melt index of 0,4 to 20,0 and a molecular weight of about 20,000 to 200,000. The first or jet stretch is preferably limited to about 10-50%, preferably 30%, of maximum, while maintaining the second stretch at about 50-95%, preferably about 90%, of maximum. The polyethylene may be a blend or copolymer of polyethylene with other polymers (of which a list is given), the proportion of polyethylene in the blend or copolymer being not less than about 80%. The solvent may be toluene, xylene, tetralin, diphenyl, or cyclohexane. The elevation of the spinneret above the quench bath is usually about 1/8 inch to 2 inches and the concentration of the solution is preferably about 20%. The quench liquid may be benzene, isopropyl alcohol, chloroform, ether, one of the above solvents, or preferably water. When water is used the dope solvent collects upon the surface of the water and may continually be removed by overflow. The temperature of the quench bath may be 0 DEG to 80 DEG C., preferably 0 DEG to 40 DEG C. The stretch bath is preferably water heated to about 60 DEG -100 DEG C., especially 80 DEG -100 DEG C. In the examples the spinneret is maintained at a temperature of 110 DEG C. to 125 DEG C. during spinning. The process enables high molecular weight polyethylenes to be used and filaments of high tenacity and low denier to be produced at high spinning speeds.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US84615059A | 1959-10-13 | 1959-10-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB904008A true GB904008A (en) | 1962-08-22 |
Family
ID=25297085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3317760A Expired GB904008A (en) | 1959-10-13 | 1960-09-27 | Wet spinning of polyethylene |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE595960A (en) |
| CH (1) | CH396302A (en) |
| DE (1) | DE1469041A1 (en) |
| GB (1) | GB904008A (en) |
| NL (1) | NL256781A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5342567A (en) * | 1993-07-08 | 1994-08-30 | Industrial Technology Research Institute | Process for producing high tenacity and high modulus polyethylene fibers |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8402964A (en) * | 1984-09-28 | 1986-04-16 | Stamicarbon | PROCESS FOR PREPARING HIGH TENSILE AND HIGH MODULUS POLYALKENE FILMS |
-
0
- NL NL256781D patent/NL256781A/xx unknown
- BE BE595960D patent/BE595960A/xx unknown
-
1960
- 1960-09-27 GB GB3317760A patent/GB904008A/en not_active Expired
- 1960-10-06 DE DE19601469041 patent/DE1469041A1/en active Pending
- 1960-10-13 CH CH1149060A patent/CH396302A/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5342567A (en) * | 1993-07-08 | 1994-08-30 | Industrial Technology Research Institute | Process for producing high tenacity and high modulus polyethylene fibers |
Also Published As
| Publication number | Publication date |
|---|---|
| BE595960A (en) | |
| CH396302A (en) | 1965-07-31 |
| NL256781A (en) | |
| DE1469041A1 (en) | 1969-03-20 |
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