James D Townsend

US Patent:

52271080, Jul 13, 1993

Filed:

Dec 12, 1991

Appl. No.:

7/806041

Inventors:

James Reid - Cleveland Heights OH
James Townsend - Moore SC

Assignee:

The Standard Products Company - Cleveland OH

International Classification:

B29C 4516

US Classification:

264148

Abstract:

A method of forming an elongated decorative trim strip of thermoplastic material with an end of the strip having a desired shape of non-constant cross-section in planes perpendicular to the longitudinal axis of the strip. An extruded length of thermoplastic material is first made of a length substantially equal to the desired length of the decorative trim strip with a first longitudinally extending surface of the length being a front show face and a second longitudinally extending surface opposite the first surface being a back mounting surface. At an end portion of the extruded length, material is removed inwardly from the second surface to create a cavity behind the first surface while leaving the show face generally undisturbed. Thereafter, the end portion of the extruded length with the cavity formed therein is enclosed in a mold chamber with an interior surface having the desired end shape and thermoplastic material is injected into the formed cavity to fill the cavity and force the show face of the enclosed end portion into engagement with the interior surface of the mold.