Plastic vessel having oriented coating and process for preparati

Details Plastic vessel having oriented coating and process for preparati Plastic vessel having oriented coating and process for preparati

1983-05-23

1987-12-22

Kittle, John E.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

264512, 264513, 264515, 264521, B29C 4514

Patent

active

047145803

ABSTRACT:
Disclosed is a coated oriented plastic vessel formed by subjecting a parison, preform or sheet comprising a molecularly orientable thermoplastic resin substrate and a coating layer of a vinylidene chloride copolymer formed on at least one surface of said substrate to a draw-molding operation such as biaxial draw-blow-molding or draw-forming, wherein the coating layer of the vinylidene chloride copolymer has such a molecular orientation tht the sum of two-dimensional orientation coefficients (l+m) in the axial direction and circumferential direction is at least 0.03 as measured according to the polarized light fluorometry and the coating layer is not substantially peeled at the low-temperature burst test conducted at -5.degree. C. This coated oriented plastic vessel is prepared by a process comprising coating an aqueous latex of a vinylidene chloride copolymer on at least one surface of a parison, preform or sheet composed of a molecularly orientable thermoplastic resin, drying the coated latex to form a coated structure and subjecting the coated structure to a draw-molding operation such as biaxial draw-blow-molding or draw-forming at a temperature higher than the glass transition temperature of the vinylidene chloride copolymer but lower than the melting point of the vinylidene chloride copolymer, at which temperature draw-molding of said thermoplastic resin is possible, to thereby from the coated structure into a shape of a vessel while drawing the coating layer.

REFERENCES:
patent: 3449479 (1969-06-01), Cines
patent: 3804663 (1974-04-01), Clark
patent: 4127633 (1978-11-01), Addleman
patent: 4254170 (1981-03-01), Roullet et al.
patent: 4393106 (1983-07-01), Maruhashi et al.
patent: 4451426 (1984-05-01), Branchadell
patent: 4478889 (1984-10-01), Maruhashi et al.
patent: 4486378 (1984-12-01), Hirata et al.

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