Method of producing low-shrink polypropylene tape fibers

Details Method of producing low-shrink polypropylene tape fibers Method of producing low-shrink polypropylene tape fibers

2006-02-14

2006-02-14

Tentoni, Leo B. (Department: 1732)

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

Forming continuous work followed by cutting

C264S209300, C264S210200, C264S210500, C264S210600, C264S211130

Reexamination Certificate

active

06998081

ABSTRACT:
Improvements in preventing heat- and moisture-shrink problems in specific polypropylene tape fibers are demonstrated herein. Such fibers are manufactured through the initial production of polypropylene films or tubes which are then slit into very thin, though flat tape fibers thereafter. Such fibers include rigidifying nucleating compounds that nucleate polymer crystals within the target polypropylene after exposure to sufficient heat to melt the initial pelletized polymer and upon allowing such a melt to cool. Specific methods of manufacture of such inventive tape fibers, as well as fabric articles made therefrom, are also encompassed within this invention.

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