Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – Composite article making
Patent
1991-05-20
1992-12-22
Kuhns, Allan R.
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
Composite article making
264 25, 264 465, 264302, 264327, 249 78, B29C 6722, B29C 4100
Patent
active
051732289
ABSTRACT:
A method for forming a 360 degree integral skin handle in a thermoplastic part for use in automotive trim products includes the steps of forming a mold with a partial recess closed by a removable plug and thereafter selectively directing heat from a first source through the mold and from a second source through the plug to form a completely closed, curved, heated tube surface and thereafter casting thermoplastic material against the curved, heated tube surface to fuse and cure a layer of material thereon in the form of a tube skin segment which is releasable from the mold when the plug is removed. Apparatus for practicing the method includes a mold with a recess therein and a plug is supported on the mold for movement into a position for closing the tube surface and into a demolding position for releasing the molded part. The article formed by the method and apparatus includes a shell of thermoplastic material which is fused and cured and which includes a generally planar segment having an integrally formed tubular segment thereon for defining the outer skin surface of a full 360 degree handle.
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Grimes John A.
Kargarzadeh Reza
Tuttle Ken E.
Davidson Textron Inc.
Kuhns Allan R.
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