Method of manufacturing a foam transparent organic glass plate

Details Method of manufacturing a foam transparent organic glass plate Method of manufacturing a foam transparent organic glass plate

1991-01-11

1993-12-14

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Composite or multiple layer

264 11, 264 41, 264 453, 264 50, B29D 1100, B29C 6720

Patent

active

052699773

ABSTRACT:
A light reflective body useful for a panel-type lighting or ornamental member with edge lighting is formed of a transparent inorganic or organic casted glass member, such as a transparent plate of polymethyl methacrylate which has foam layers unevenly dispersed in the inner or outer face of the member or plate. The organic casted glass member of the light reflective body is manufactured by (a) gelling organic glass beads and an organic glass monomer or prepolymer or a mixture of them and thereafter casting them with an organic glass monomer or prepolymer or a mixture of them in a framework; (b) spreading the foaming material on a ready-made organic glass plate and hardening it; or (c) tightly attaching an organic glass foam plate manufactured in advance to an organic glass plate. In accordance with the method (a) or (b), the foam layer is completely integral with the organic casted glass product. Method (c) can also be applied to an inorganic casted glass member.

REFERENCES:
patent: 2143946 (1939-01-01), Hunter
patent: 3454332 (1969-07-01), Siegel
patent: 3694246 (1972-09-01), Purcell et al.

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