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US 5,503,921 AGranted
Core with foamed skin covering
AssigneeKransco
InventorsPeter M. Chang, Steven M. Moran
Life of this patent
Estimating the term…
Abstract
A bodyboard with skins covering the top and bottom surfaces of a foam plank that forms a core in the bodyboard. The top skin is prepared by heat-expanding a foamable matrix layer having a polyolefin film deposited on the top surface of the matrix layer. With the application of heat, the matrix layer becomes a foam, and the polyolefin film softens and integrates with the foam. Graphics carried internally on the film become an integral part of the foam.
Claims9
Aboard for supporting a rider for travel comprising:
- a core of a stiff material having opposed sides;
- a skin extending in covering relation over at least one side of the core;
- said skin comprising a layer of polyolefin foam having an inner surface attached to the core and an outer surface containing the residue of a polyolefin film,
- wherein said skin is produced by disposing a polyolefin film over a heat-expandable polyolefin layer and expanding the polyolefin layer at a temperature at which the film melts or softens so that the film becomes fully integrated with the foam surface.
1 more element
Aboard for supporting a rider for travel comprising:
- a core of a stiff material having opposed sides;
- a skin extending in covering relation over at least one side of the core;
- said skin comprising a layer of polyolefin foam having an inner surface attached to the core and an outer surface containing the residue of a polyolefin film,
- wherein said skin is produced by disposing a polyolefin film comprising graphic images on a heat-expandable polyolefin layer and expanding the polyolefin layer at a temperature at which the film melts or softens so that the film and the graphic images become fully integrated with the foam surface and the graphic images appear in an expanded state due to the expansion of the foam layer.
1 more element
Dependencies are inferred from the claim text.