Method of manufacturing a bottle-shaped container of synthetic r

Details Method of manufacturing a bottle-shaped container of synthetic r Method of manufacturing a bottle-shaped container of synthetic r

1983-10-28

1984-11-06

Silbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

Direct application of fluid pressure differential to...

Producing multilayer work or article

215 1C, 264521, 264532, 264535, 264537, 264162, B29C 1707, B29C 1712, B29D 904

Patent

active

044811632

ABSTRACT:
A bottle-shaped container of saturated polyester having frosted or ground surface is manufactured by the steps of heating the outer layer portion of the injection-molded preformed piece to thereby crystallize the outer layer portion to opacify in white, and blow-molding the preformed piece in a blowing mold having at least part of its inner surface formed with rough surface sandblasted in advance to thereby form the rough surface on the bottle-shaped container on the crystallized outer layer portion surface. Thus, the bottle-shaped container incorporates pearl-like ground surface desired in a shape on the surface instead of the glossy surface peculiar to synthetic resin.

REFERENCES:
patent: 2669752 (1954-02-01), Pratt
patent: 3221086 (1965-11-01), Wells
patent: 3288318 (1966-11-01), Corbin et al.
patent: 3379559 (1968-04-01), Gerhardt
patent: 4024975 (1977-05-01), Uhlig
patent: 4039641 (1977-08-01), Collins
patent: 4108937 (1978-08-01), Martineu et al.
patent: 4164298 (1979-08-01), Nishikawa et al.
patent: 4264558 (1981-04-01), Jacobsen
patent: 4358491 (1982-11-01), Ota et al.

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