Molding method for making plastic foam-backed shells
Patent 5922256 Issued on July 13, 1999. Estimated Expiration Date: 
June 26, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
June 26, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMold method and apparatus for multi-color plastic shells Resinous foam formulation for self-skinning cover material Method of manufacturing an interior trim panel using polyurethane powder Process for manufacturing foam molded product Patent #: 5620636 InventorsAssigneeApplicationNo. 883582 filed on 06/26/1997US Classes:264/45.5, Autogenously formed surface layer or base supplies surface (e.g., skin forming, etc.)264/46.4, Shaping material and uniting to a preform or solidified layer264/245, Multicolored surface264/302Slush casting typeExaminersPrimary: Kuhns, Allan R.Attorney, Agent or FirmForeign Patent References
International ClassB29C 044/06AbstractA method of molding a plastic shell having an outer pliable skin layer and a foam backing layer comprises casting a first skin layer portion from wear resistant material in a first casting sequence for those areas of the panel susceptible to high wear and in a second casting sequence casting self-skinning foamable material against the remaining portion of the mold surface and over the first-cast skin layer portion to develop, simultaneously, the remaining outer skin layer portion of the shell and a foam backing layer which extends across the entire skin layer. | |
