MANUFACTURER EVOLVES NEW USES FOR PLASTIC

Press, Volume XCIV, Issue 28150, 13 December 1956, Page 20

MANUFACTURER EVOLVES NEW USES FOR PLASTIC

New uses for a plastic—uses which have surprised even the overseas manufacturers of the material—have been evolved by a Christchurch manufacturer, who is about to turn his factory over to using the new process. The plastic itself, telcon. a derivative of polythene, was evolved in the 1930’s during experiments on highpressure reactions, and it was used in radar apparatus during the Second World War. ’ By the use of additives, it was developed for further use in the electrical industry.

Experimenting over the last 18 months for a plastic which could be used in industry, the Christchurch man, Mr A. G. Boreham, found telcon to be the most versatile. In the past, its most common use, apart from that for which the makers developed it, was for the coating of metals, for decorative and protective purposes in food handling, such as refrigerator shelves and trays.

Among the successful uses to which it has been put by the Christchurch experiments are as an intermediary between two metals where metal-to-metal contact is undesirable; as a cover on metal where abrasion is to be kept at a minimum; and as a cover for metal where there is danger of corrosion, such as acid receptacles and electroplating jigs. Mr Boreham has also experimented with the use of the plastic as a lining coat for sulphuric and other acid pumps. Outside industry, it is claimed that the plastic can be used for street signs, and Mr Boreham has the interest of several local bodies in this

use. and is arranging tests of sign, for the Railways Department and the Automobile Association (Canterbury) For signs, the is bonded to the metal on both sides. The lettering is then superimposed in any of several colours. It is claimed "tha l the sign is more durable than any other material yet used. Tests show that it will not fracture by impact. A sign can be bent and straightened again without damage. It is resistant to the weather, and impervious to dirt and most chemicals.

To be damaged badly by vandals it would have to be cut with a knife but that would be difficult where the’ base was of steel. Even if some of it was cut, repairs could be effected easily, and would not appear any dif. ferent from the original, whereas with painted signs the whole sign would need repainting.

Another use to which the plastic has been put experimentally is for the coating of red fire alarm street boxes.