Method and apparatus for molding continuous lengths of plastic

Plastic and nonmetallic article shaping or treating: processes – Forming continuous or indefinite length work

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26417111, 264248, 264323, 264325, 264DIG69, 425325, 425327, 425377, 425380, B29C 4326, B29C 4330

Patent

active

057889015

ABSTRACT:
A method and apparatus for producing continuous lengths of compression-molded material containing thermoplastic resin. Discrete lengths of extruded material are indexed through a compression mold. The mold forms, hardens, and integrally joins two successive extruded segments of material. A first molded segment is indexed forward leaving a trailing portion in the mold. A subsequent segment is extruded into the mold, and is integrally joined to the trailing portion by compressing the mold. Subsequent segments can be joined to produce a continuous profiled length formed from recycled thermoplastic material, while avoiding damage and downtime caused by contaminants in recycled material.

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