Stock material or miscellaneous articles – Structurally defined web or sheet – Including components having same physical characteristic in...
Reexamination Certificate
2007-08-21
2007-08-21
Dye, Rena (Department: 1774)
Stock material or miscellaneous articles
Structurally defined web or sheet
Including components having same physical characteristic in...
C428S332000, C428S340000, C428S480000, C428S482000
Reexamination Certificate
active
10469470
ABSTRACT:
Acrylic matt thermoplastic resin films having excellent printability, flex whitening resistance, impact resistance and solvent resistance, and a process for the preparation thereof are provided. The films made of a thermoplastic resin composition comprising 100 parts by weight of an acrylic resin (A) and 0.5 to 20 parts by weight of a crosslinked acrylic polymer (B) as a matting agent are prepared by a process wherein the resin composition is kneaded and formed into a film, and the both surfaces of the film are simultaneously brought into contact with rolls between them, one roll being kept at a temperature of not less than the glass transition temperature Tg of the resin composition and the other roll being kept at a temperature of less than the Tg, whereby the film surface contacted with the roll having a temperature of Tg or higher is converted into a mirror surface and the film surface contacted with the roll having a temperature lower than Tg is converted into a matt surface.
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Nishimura Juichi
Shimamoto Yukihiro
Dye Rena
Ferguson Lawrence D.
Hogan & Hartson LLP
Kaneka Corporation
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