Process for rendering polyester hollow bodies gastight

Details Process for rendering polyester hollow bodies gastight Process for rendering polyester hollow bodies gastight

1979-02-08

1981-03-03

Silbaugh, Jan H.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

215 1C, 264516, 264134, 428 35, 428483, 428521, 428522, 428523, 428910, B29C 1707, B32B 2708, B65D 2302

Patent

active

042541700

ABSTRACT:
The invention pertains to a process for producing bioriented polyester hollow bodies characterized by good gas and flavor tightness, wherein one wall of a preform is coated with an aqueous composition consisting of at least two incompatible polymers, one of which is a water soluble polyvinyl alcohol and the other, a polymer latex with low water sensitivity; the coating is dried and the preform is bidrawn-blown.

REFERENCES:
patent: 3505264 (1970-04-01), Thoese et al.
patent: 4079850 (1978-03-01), Suzuki et al.
patent: 4127633 (1978-11-01), Addleman

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