Adhesive film for bushings
AssigneeSaint-Gobain Performance Plastics Corporation
InventorsPaul W. Ortiz, Julia DiCorleto Gibson
Life of this patent
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Abstract
A bushing can include a load bearing substrate having a first major surface, an adhesive film overlying the first major surface, and a friction reducing layer overlying the adhesive film. A method can include extruding an adhesive film, laminating a friction reducing layer to a load bearing substrate with the adhesive film therebetween to form a composite, and shaping the composite to form a bushing. The adhesive film can include a first adhesive layer, such as and a fluoropolymer layer. The adhesive layer can include a modified ethylene tetrafluoroethylene, and the fluoropolymer layer can include an ethylene tetrafluoroethylene.
Claims14
A bushing comprising:
- a load bearing substrate having a first major surface;
- an adhesive film overlying the first major surface and comprising a first layer and a second layer, the first layer being an adhesive layer and the second layer being a fluoropolymer layer, wherein the fluoropolymer layer includes a fluoropolymer and the adhesive layer including a modified form of the fluoropolymer, wherein a thickness ratio of the adhesive layer and the fluoropolymer layer is not less than 1:20;
- and
- a friction reducing layer overlying the adhesive film.
A composite comprising:
- a metal substrate having a first major surface;
- and
- an adhesive film overlying the first major surface and comprising a first layer and a second layer, the first layer being a modified ethylene tetrafluoroethylene layer and the second layer being an ethylene tetrafluoroethylene layer, the modified ethylene tetrafluoroethylene layer having a thickness of not greater than about 7.5 microns;
- and
- a friction reducing layer overlying the adhesive layer.
Dependencies are inferred from the claim text.