Process for protecting thermoformed films

Details Process for protecting thermoformed films Process for protecting thermoformed films

1988-04-21

1989-04-25

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156247, 156285, 1563063, 156323, 156344, 427154, B29C 4356, B32B 3120

Patent

active

048245062

ABSTRACT:
A process for thermoforming a decorative glossy film to a relatively rigid substrate includes the steps of: providing a carrier film having a heat absorption limit or a plurality of heat absorption limits above which decorative degradation occurs during direct exposure to heat sources of thermoforming apparatus; thermally protecting the surface of the carrier film with a layer of material with a heat absorption rate which will shield the carrier film against excessive heat buildup while softening the carrier film for drawing against a substrate; drawing the carrier film and the protective layer thereon into bonded engagement with the relatively rigid substrate; and thereafter removing the thermal protection layer without degrading the appearance of the decorative carrier film.

REFERENCES:
patent: 2020256 (1935-11-01), Copeman
patent: 2654687 (1953-10-01), Fridolph
patent: 2932252 (1976-01-01), Woods
patent: 3434904 (1969-11-01), Wiggins
patent: 3491039 (1970-01-01), Takahashi et al.
patent: 3562059 (1971-02-01), Gladen
patent: 4477504 (1984-10-01), Bailey et al.
patent: 4623413 (1986-11-01), Questel et al.

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