Biaxially oriented film having specified micro protrusions

Details Biaxially oriented film having specified micro protrusions Biaxially oriented film having specified micro protrusions

2006-04-04

2006-04-04

Rickman, Holly (Department: 1773)

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

C428S323000, C428S847400

Reexamination Certificate

active

07022396

ABSTRACT:
An object of the present invention is to provide a high-quality biaxially oriented film exhibiting an excellent electromagnetic conversion property, traveling durability, magnetic head traveling performance, etc. as a magnetic recording medium. The object of the present invention is achieved by a biaxially oriented film including a polymer alloy composed of polyester (polymer 1) and a thermoplastic resin (polymer 2) other than the polyester as essential components, wherein micro protrusions having a height of 2 to 50 nm are formed at a density of 1,000,000 to 90,000,000/mm2on at least one surface.

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patent: 1202260 (1998-12-01), None
patent: 0398075 (1990-11-01), None
patent: 0522758 (1992-06-01), None

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