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Patent Searching and Data


Title:
PRODUCTION OF POLYOLEFINIC THREE-DIMENSIONAL FIBER
Document Type and Number:
Japanese Patent JPH0641810
Kind Code:
A
Abstract:

PURPOSE: To produce polyolefinic three-dimensional fiber, excellent in strength and opening properties and suitable for producing a flash spun nonwoven fabric sheet by using a single noncombustible halogen-based solvent having low ability to destroy the ozonosphere.

CONSTITUTION: The objective method for producing polyolefinic three- dimensional fiber is characterized by selecting a solvent from the group consisting of 1,2-dichloro-1,2-difluoroethylene, 1,1-dichloro-2,2-difluoroethylene,1,2- dichloro-1-fluoroethylene and 1,1-dichloro-2-fluoroethylene for a polyolefinic solution and regulating the polyolefinic concentration in the polyolefinic solution to 5-25wt.% in a method for producing the fibrillated polyolefinic three- dimensional fiber by passing the polyolefinic solution prepared at a high temperature under a high pressure through a vacuum orifice, a vacuum chamber and a spinneret and releasing the resultant solution to a zone at ordinary temperature under atmospheric pressure.


Inventors:
KATO JINICHIRO
NAKAYAMA YOSHIAKI
Application Number:
JP19074492A
Publication Date:
February 15, 1994
Filing Date:
July 17, 1992
Export Citation:
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Assignee:
ASAHI CHEMICAL IND
International Classes:
D01D5/11; D01F6/04; (IPC1-7): D01F6/04; D01D5/11