Process for producing three-dimensional, mirrored acrylic articl

Details Process for producing three-dimensional, mirrored acrylic articl Process for producing three-dimensional, mirrored acrylic articl

1981-05-11

1982-07-13

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Composite or multiple layer

264 27, 264134, 264230, 264342R, 264510, 427163, B29D 1100

Patent

active

043394000

ABSTRACT:
A process for producing three-dimensional, mirrored acrylic products using forming techniques eliminates micro-fracturing of a vacuum deposited reflective metal coating by preshrinking a sheet of acrylic before the sheet is mirrorized and formed into the desired three-dimensional shape. Preshrinking is accomplished by heating the sheet to forming temperature and allowing the heated sheet to cool at room temperature before the sheet is formed. Deposition of the metallic reflective coating is performed after the preshrinking step.

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patent: 3094430 (1963-06-01), Skwierinski
patent: 3431135 (1969-03-01), Keane et al.
patent: 3914471 (1975-10-01), Cobb et al.
patent: 3967992 (1976-07-01), McCaskey, Jr. et al.
patent: 4139586 (1979-02-01), Gasson
patent: 4154788 (1979-05-01), Hockensmith et al.
patent: 4255364 (1981-03-01), Talbert

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