Title:
COMPOSITE POLYPROPYLENE FILAMENTS HAVING A HIGH DEGREE OF CRIMP
United States Patent 3533904
US Patent References:
COMPOSITE YARN AND ITS MANUFACTURING METHOD
- - 3438193
Composite thermoplastic fibers
- - 2439815
Method of manufacturing artificial filaments
- - 2443711
Process of preparing a helically crimped polypropylene filament
- - 3093444
Method for producing bicomponent polypropylene filaments
- - 3399259
COMPOSITE YARN AND ITS MANUFACTURING METHOD
- - 3438193
Composite thermoplastic fibers
- - 2439815
Method of manufacturing artificial filaments
- - 2443711
Process of preparing a helically crimped polypropylene filament
- - 3093444
Method for producing bicomponent polypropylene filaments
- - 3399259
Inventors:
Jurkiewitsch, George
Publication Date:
10/13/1970
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Export Citation:
Assignee:
HERCULES INC
Primary Class:
Other Classes:
264/172.140, 428/394, 264/172.150, 264/172.180, 428/397, 264/168
International Classes:
D01D5/30
US Patent References:
| 3408277 | Process and apparatus for producing high-bulk synthetic yarns |
Foreign References:
| JP40009533B |