Method for producing resin rich surface layer on composite therm

Details Method for producing resin rich surface layer on composite therm Method for producing resin rich surface layer on composite therm

1989-08-07

1991-01-08

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156282, 1563096, 264255, 264257, 264322, 264324, B32B 3100

Patent

active

049832476

ABSTRACT:
A layer of a neat resin in powder form is deposited either on a mold surface or on a bulk thermoplastic composite fiber reinforced sheet. The resin layer is adjacent to an insulated wall of a compression mold. The bulk sheet is preheated and compression deformed with the powdered resin. The heat from the sheet flows to and melts the powder layer producing a resin rich layer. The insulated wall permits the heat of the sheet to be retained sufficiently to melt the powdered resin. In the alternative, the neat resin powder may be replaced with a preformed film of thermoplastic resin compatible with the sheet resin. A structural homogeneous integral molecular bond is formed between the neat resin layer and the sheet.

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patent: 4716072 (1987-12-01), Kim
patent: 4838974 (1989-06-01), Nied et al.

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