Process for production of an expanded polyolefin panel

Details Process for production of an expanded polyolefin panel Process for production of an expanded polyolefin panel

1985-06-19

1987-09-29

Dawson, Robert A

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156220, 156277, 428159, 4283199, B32B 3114, B32B 520

Patent

active

046967095

ABSTRACT:
A process for producing an expanded or foamed polyolefin panel with a decorative surface wherein a polyolefin or a mixture of a polyolefin with rubber and/or a synthetic resin miscible therewith is blended homogeneously with a crosslinking agent and a blowing agent and shaped into a panel-like matrix below the decomposition temperature of the blowing agent and the activation temperature of the crosslinking agent; a film of a thermoplastic synthetic resin, imprinted in accordance with a pattern with printing ink on one surface side, is applied unilaterally or bilaterally to the matrix, with the imprinted surface side facing the matrix; and then the matrix, with the film applied, is crosslinked and expanded by heating to a temperature above the activation of the crosslinking agent and the decomposition temperature of the blowing agent.

REFERENCES:
patent: 3464934 (1969-09-01), Birkett et al.
patent: 3870591 (1975-03-01), Witman
patent: 4217385 (1980-08-01), Shortway et al.

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