Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Making hole or aperture in article
Patent
1994-09-29
1996-05-14
Tentoni, Leo B.
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Making hole or aperture in article
2642893, 2642896, 264340, 264345, B29C 5504, B29C 6700
Patent
active
055164730
ABSTRACT:
A process of imbibition drawing is improved by a pretreatment that preferably involves straining an undrawn filament bundle, or other elongated shaped undrawn or partially drawn synthetic polymeric article, while wetted with a cracking agent, before incorporating a desired additive by imbibition drawing, thereby increasing the imbibition capacity of the article, and improved articles incorporating such additives. Alternatively or in addition the pretreatment involves polarizing irradiation, before imbibition drawing.
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Bakeev Nikolai P.
Lukovkin Gennadii M.
Marcus Ilan
Mikushev Anatolii E.
Shitov Nikolai A.
E. I. Du Pont de Nemours and Company
Tentoni Leo B.
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