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US 4,411,945 AGranted
Friction sheets
AssigneeFuji Photo Film Co., Ltd.
InventorsMutsuo Akao, Haruo Furuta
Life of this patent
Estimating the term…
Abstract
A friction sheet is described consisting of a single layer or a laminated layer comprising an at least uniaxially oriented high density polyethylene film having a density of at least 0.94 g/cm.sup.3.
Claims28
A laminated friction sheet, comprising:
- a first layer of a uniaxially oriented high density polyethylene film having a density of at least 0.94 g/cm.sup.3 ;
- a second layer of a uniaxially oriented high density polyethylene film having a density of at least 0.94 g/cm.sup.3, connected to the first layer by an adhesive layer positioned between said first and second layer.
A laminated friction sheet, comprising:
- a first flexible sheet layer;
- and
- a layer of a uniaxially oriented high density polyethylene film having a density of 0.94 g/cm.sup.3, connected to said first flexible sheet layer by an adhesive layer positioned between said first flexible sheet layer and said uniaxially oriented high density polyethylene film.
Dependencies are inferred from the claim text.