Method of extrusion molding prism film and prism film...

Details Method of extrusion molding prism film and prism film... Method of extrusion molding prism film and prism film...

2011-05-03

2011-05-03

Harrington, Alicia M (Department: 2873)

Optical: systems and elements

Single channel simultaneously to or from plural channels

By surface composed of lenticular elements

Reexamination Certificate

active

07936517

ABSTRACT:
A method of extrusion molding a prism film and a prism film manufactured by the same, the method including providing a molten film, simultaneously forming a prism pattern and an embossed pattern on opposite surfaces of the molten film by passing the molten film through a gap between a prism roll and an emboss roll, and cooling the molten film having the prism pattern and the embossed pattern on opposite surfaces thereof.

REFERENCES:
patent: 6870674 (2005-03-01), Ookawa et al.

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