Polyester vessel for drink and process for preparation thereof

Details Polyester vessel for drink and process for preparation thereof Polyester vessel for drink and process for preparation thereof

1990-06-22

1993-10-05

Lesmes, George F.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

215 1C, 428910, B65D 102, B29C 4908

Patent

active

052503356

ABSTRACT:
In preparing a draw-blow-formed polyester vessel, the inner surface and outer surface temperatures of a starting preform are adjusted at specific levels at the preliminary heating step, and the drawing speed in the circumferential direction is adjusted at a level of at least 350%/sec and a specific relation is established between the area draw ratios on the inner and outer surface sides at the draw-blowing step. A polyester vessel having a reduced shrinkage with time and a high pressure-resistant strength is obtained according to this process.

REFERENCES:
patent: 4571173 (1986-02-01), Chang et al.
patent: 4803036 (1989-02-01), Maruhashi et al.
patent: 4913945 (1990-04-01), Maruhashi et al.

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