Thermoforming process of corrugated plastic board

Details Thermoforming process of corrugated plastic board Thermoforming process of corrugated plastic board

1976-10-27

1981-02-03

Goolkasian, John T.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156207, 156220, 156221, 156245, 264292, 264321, 264322, 264554, B29C 1700, B29C 300

Patent

active

042486513

ABSTRACT:
An improved thermoforming process for the production of formed articles of corrugated plastic board having small radius curvatures and deep drawings, which comprises heating said corrugated plastic board at the portions to be formed into small radius curvatures or deep drawings more intensively than at the other portions, and applying pressure to said portions thereby crushing the rib structure in said portions without crushing the rib structure in said other portions.

REFERENCES:
patent: 2100891 (1937-11-01), Zinser
patent: 2958620 (1960-11-01), Ono
patent: 3406052 (1968-10-01), Peters

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