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Plastic Used in New Safety Glass

27th September 1946
Page 29
Page 29, 27th September 1946 — Plastic Used in New Safety Glass
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AM1NATED safety glass, having 1—■ nzarly three times the break-resisting qualities of that previously produced, was announced last week by the Triplex Safety Glass Co., Ltd., I, Albemarle Street, London, W.I. Hitherto, such safety glass has consisted of two sheets of glass having an interlayer of cellulose acetate.

The material now used is a synthetic plastic of high elasticity, and it possesses the desirable property of making thorough adhesion to the glass, so that there is no need for a separate sealing agent around the edges. It is composed of a chemical named polyvinyl butyral, generally referred to as vinal.

The elasticity figure given for the new interlayer is 350 per cent., as compared with 17 per cent, for celluloid. and 40 per cent, for acetate.

We understand that all Triplex safely glass now being produced incorporates the new interlayer, which, after longperiod tests, has shown no tendency to discolouration or other fault likely to reduce the transparent qualities of the finished product_


Locations: London

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