Process for producing phase retarder film

Details Process for producing phase retarder film Process for producing phase retarder film

1994-12-22

1995-12-05

Ball, Michael W.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156229, 264230, 359 73, B32B 3100, B29C 6102, G02F 11333

Patent

active

054725380

ABSTRACT:
A process for producing a phase retarder film, which comprises laminating a heat-shrinkable film on at least one side of a uniaxially stretched thermoplastic resin film so that the heat shrinkage axis direction of said heat-shrinkable film becomes perpendicular to the stretching axis direction of said uniaxially stretched thermoplastic resin film, subjecting the resulting laminate to heat shrinkage, and then peeling and removing the heat-shrinkable film. An object of the present invention is to provide a process for providing a phase retarder film having a desired R.sub.40 /R.sub.0 value and a desired retardation value, easily and at a high efficiency.

REFERENCES:
patent: 5245456 (1993-09-01), Yoshimi et al.
patent: 5366682 (1994-11-01), Morikawa et al.

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