Bearing ring with low sliding friction for an optical disk

Details Bearing ring with low sliding friction for an optical disk Bearing ring with low sliding friction for an optical disk

G - Physics

11

B

G11B 7/24 (2006.01) G11B 11/105 (2006.01) G11B 23/00 (2006.01)

Patent

CA 2067000

A bearing ring for an optical disk has sufficiently high firmness and satisfactory sliding properties. The ring is formed by cutting a laminate structure comprising a first layer formed of a firm film of material having a sufficiently high modulus of rigidity and a second layer formed of a film having a very low coefficient of sliding friction. The first layer is preferably a film of polyethylene terephthalate and the second layer is preferably a polyethylene having a very high molecular weight of one million or more. The second layer can also be formed of nylon 6, 6, polyacetal and fluorocarbon resins.

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