Method and apparatus for thermoforming plastic sheets

Details Method and apparatus for thermoforming plastic sheets Method and apparatus for thermoforming plastic sheets

1991-11-22

1993-04-20

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156245, 156500, 264108, 264109, 264112, 264113, 264119, 425410, 425411, 425412, 425417, 425419, 425423, B32B 3104

Patent

active

052039404

ABSTRACT:
A technique is provided for forming an article having a sharp, detailed edge by thermoforming thermoplastic resin prepregs containing randomly arranged reinforcing fibers and ordered, substantially continuous reinforcing fibers. The thermoforming mold used for this technique has a mold cavity with a wedge-shaped interior portion and a mold plug with a wedge-shaped exterior portion wherein the mold plug is capable of applying additional pressure along its edge section. The randomly arranged reinforcing fibers are utilized to form the sharp edge portion of the resulting article while the ordered, substantially continuous reinforcing fibers are utilized to form the remaining wall portions of the resulting article.

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