Flash-spinning process and solution

Details Flash-spinning process and solution Flash-spinning process and solution

2007-02-20

2007-02-20

Eashoo, Mark (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

C252S008840

Reexamination Certificate

active

10275586

ABSTRACT:
A process for the preparation of plexifilamentary film-fibril strands of synthetic fiber-forming polymer comprises the steps of generating a spin fluid and flash-spinning the spin fluid to form plexifilamentary film-fibril strands of the synthetic fiber-forming polymer. The spin fluid consists essentially of (a) 5 to 30 wt. % of a synthetic fiber-forming polymer, (b) a primary spin agent selected from the group consisting of hydrocarbons with 4 to 7 carbon atoms, and chlorinated, brominated and fluorinated compounds, and (c) a co-spin agent co-spin agent selected from the group consisting essentially of fluorinated organic compounds containing 4 to 8 carbon atoms and a double bond, and having an atmospheric boiling point of less than 100° C. The co-spin agent is present in the spin fluid in an amount sufficient to raise the cloud point pressure of the spin fluid by at least 50 pounds per square inch (345 kPa). A spin fluid used in the process of the invention is also provided.

REFERENCES:
patent: 5032326 (1991-07-01), Shin
patent: 5147586 (1992-09-01), Shin et al.
patent: 5672307 (1997-09-01), Shin et al.
patent: 5874036 (1999-02-01), Shin et al.
patent: 5985196 (1999-11-01), Shin et al.
patent: 6004672 (1999-12-01), Shin et al.
patent: 6153134 (2000-11-01), Shin et al.
patent: 6162379 (2000-12-01), Shin et al.
patent: 6270709 (2001-08-01), Akki et al.
patent: 6291566 (2001-09-01), Shin et al.
patent: 6303682 (2001-10-01), Shin et al.
patent: 6319970 (2001-11-01), Shin et al.
patent: 6352773 (2002-03-01), Akki et al.
patent: 6455619 (2002-09-01), McGinty et al.
patent: 6458304 (2002-10-01), Shin et al.
patent: 6638470 (2003-10-01), Schweiger
patent: 6692826 (2004-02-01), Shin et al.
patent: 6793840 (2004-09-01), Shin et al.

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