Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – To produce composite – plural part or multilayered article
Patent
1993-12-02
1995-11-14
Aftergut, Karen
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
To produce composite, plural part or multilayered article
264301, 264309, 264310, B29C 3912, B29C 4104, B29C 4108, B29C 4122
Patent
active
054664128
ABSTRACT:
A cover for an air bag unit having a patterned tear seam therein defined by an integrally bonded, thermoplastic filler strip as the cover material and including a material having properties different than that of the cover material. Apparatus for forming the cover includes a thin shell mold having an inner surface that is heated to melt thermoplastic material cast thereon. A powder box adapted to contain thermoplastic material therein for distribution onto the thin shell mold carries a gasket having a shape corresponding to the tear seam shape. The powder box and gasket are adapted to be connected to the thin shell mold for forming a sealed footprint on the inner surface during distribution of the cast material against heated surface portions of the thin shell mold to form a thermoplastic cover with an opening therein that has the tear seam pattern. The opening is later filled with the lesser strength thermoplastic material to form an integrally bonded thermoplastic filler strip.
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Iannazzi Peter
Parker Thomas
Aftergut Karen
Davidson Textron Inc.
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