Plastic and nonmetallic article shaping or treating: processes – With twining – plying – braiding – or textile fabric formation
Reexamination Certificate
2011-08-23
2011-08-23
Tentoni, Leo B (Department: 1742)
Plastic and nonmetallic article shaping or treating: processes
With twining, plying, braiding, or textile fabric formation
C264S17800F, C264S180000, C264S203000, C264S210700, C264S210800, C264S211150, C264S211160, C264S211170, C264S234000
Reexamination Certificate
active
08003027
ABSTRACT:
A process for the preparation of polymer yarns from ultra high molecular weight homopolymers or copolymers which includes the steps of preparing a suspension of a homopolymer or copolymer and a spinning or gelling solvent, extruding the suspension with the formation of a gel, spinning the gel to obtain non-stretched filaments or yarns, cooling the non-stretched filaments or yarns, feeding the non-stretched filaments or yarns, to an extractor together with the feed of an organic extraction solvent, extracting the non-polar long chain solvent impregnated in the yarns, drying the non-stretched filament bundles or yarns, and stretching said dry yarns at a temperature in excess of 80° C.
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Beckerdorf Martha De La Rue
Da Cunha Fernanda Oliveira Vieira
de La Rue Breno
do Nascimento Alan Kardec
Birch & Stewart Kolasch & Birch, LLP
Braskem S.A.
Profil Ind E Com de Fios Ltda.
Tentoni Leo B
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