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US 6,113,837 AGranted
Method of forming products from thermoformable foam with infrared receptors
AssigneeJohnson Controls Interiors Technology Corp.
InventorBrian L. Erickson
Life of this patent
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Abstract
A plastic sheet capable of being shaped by a cold room temperature tool, said sheet being a semi-rigid thermoformable plastic foam doped with carbon black having a concentration within a range of 0.0000081 to 0.0081% by weight of the foam. And a method of forming a product from such sheet by heating it to its thermoforming temperature range by infrared (IR) heat and placing and compressing the sheet between mold parts of a cold tool, the IR heat preferably being generated by quartz lamp electric heaters.
Claims14
A method of forming a product comprising:
- providing a plastic sheet capable of being shaped by a cold room temperature tool into a product interposed and compressed between two mold parts of said tool, said sheet comprising:
- a semi-rigid polyurethane thermoformable plastic foam material having a predetermined thermoforming softening temperature range;
- said plastic sheet being doped with carbon black having a concentration within the range of 0.0000081 to 0.0081% by weight;
- heating said sheet to said thermoforming temperature range by infrared (IR) heat;
- and
- placing and compressing said sheet between mold parts of a cold tool.
3 more elements
Dependencies are inferred from the claim text.