B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 49/20 (2006.01) B29C 49/24 (2006.01) B29C 70/82 (2006.01) B29C 51/04 (2006.01)
Patent
CA 2083523
ABSTRACT OF THE DISCLOSURE A process for molding composite plastic objects. In one version, a reinforcing mesh of high tensile strength is laid on an inside surface of a mold. A parison is introduced into the mold or blown to force its thermoplastic through the mesh against the inside surface of the mold, embedding and mechanically interlocking the mesh into the thermoplastic wall of the blow molded object. The resultant strength increase, with little weigh increase and no adverse effect on material properties, is useful for automotive structures such as bumpers, seats and gasoline tanks. In another version, carpet or fabric having an impermeable backing is laid on a mold surface, followed by blow molding to mold and mechanically interlock the rear of the carpet or fabric into the molded structure. The resultant surfaced structure is useful in auto door panels and other applications where a decorative or textile surface finish is needed for a plastic molded structure.
Bereskin & Parr
Salflex Polymers Ltd.
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