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US 4,540,624 AGranted
Antistatic laminates containing long carbon fibers
AssigneeWestinghouse Electric Corp.
InventorDaniel L. Cannady, Jr.
Life of this patent
Estimating the term…
Abstract
A static-dissipating laminate is made, containing at least a bottom core layer and a top decorative layer, both layers being impregnated with a resin, where at least the decorative layer has contacting, long carbon fibers uniformly distributed through it in an amount effective to provide an antistatic effect to the laminate, so that static charges accumulating on the top of the decorative layer are dissipated.
Claims8
A static-dissipating, heat and pressure consolidated laminate comprising:
- (A) a bottom core layer containing a plurality of fibrous sheets, and
- (B) a top decorative fibrous layer disposed on the core layer, where the core and decorative layers are impregnated throughout with a cured resin and where at least the decorative layer has contacting, carbon fibers uniformly distributed therethrough, the carbon fibers constituting from about 1 wt. % to about 15 wt. % of the unimpregnated, non-carbon decorative fiber weight plus carbon fiber weight in the decorative layer, said carbon fibers being effective to dissipate static charges accumulating on the top of the decorative layer, where the cured resin remains impregnated in the laminate after heat and pressure consolidation without being carbonized.
A static-dissipating, electrically conducting, heat and pressure consolidated decorative laminate comprising:
- (A) a bottom core layer containning a plurality of fibrous sheets, and
- (B) a top decorative fibrous layer disposed on the core layer, where the core and decorative layers comprise fibrous sheet material which is impregnated throughout with a cured resin and where both layers have contacting, carbon fibers uniformly distributed therethrough, the carbon fibers in the core layer constituting from about 1 wt. % to about 15 wt. % of the unimpregnated, non-carbon core fiber weight plus carbon fiber weight, and the carbon fibers in the decorative layer constituting from about 1 wt. % to about 15 wt. % of the unimpregnated, non-carbon decorative fiber weight plus carbon fiber weight, said carbon fibers being effective to provide a static-dissipating, electrically conducting decorative laminate, so that static charges accumulating on the top of the decorative layer are dissipated, where the cured resin remains impregnated in the laminate after heat and pressure consolidation without being carbonized.
Dependencies are inferred from the claim text.