Method for thermoforming and bonding a paint-coated polymeric fi

Details Method for thermoforming and bonding a paint-coated polymeric fi Method for thermoforming and bonding a paint-coated polymeric fi

1989-09-05

1991-07-23

Silbaugh, Jan H.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

264230, 264342R, 264345, 264510, 264DIG65, 264DIG71, 156285, 425384, 425388, 427140, B29C 5110, B29C 5114, B29C 5142

Patent

active

050340778

ABSTRACT:
Paint-coated polymeric films which are bonded to substrates such as automobile panels, as a substitute for spray painted finishes, often develop surface blemishes or defects from the coating or web handling operations. These can be reduced or eliminated by vacuum thermoforming the film to the desired substrate in a plural stage procedure. The periphery of the film is clamped in a frame. Then the film is preheated to a temperature above its glass transition temperature until the film becomes taut in the frame. It is allowed to cool and is then reheated to at least the glass transition temperature and is then vacuum thermoformed to the substrate. This procedure eliminates many if not all of the visible surface defects in the thermoformed film.

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patent: 4824506 (1989-04-01), Hoerner et al.
patent: 4828637 (1989-05-01), Mentzer et al.
patent: 4838973 (1989-06-01), Mehtzer et al.

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