COMPOSITE PLASTIC TRACK AND METHOD OF MAKING

摘要

A COMPOSITE PLASTIC TRACK AND METHOD OF MAKING A plastic track of composite construction is for use as a integral part of display stands of the gravity feed type which are commonly used in retail outlets and is formed by a coextrusion method wherein a quantity of high impact polystyrene is heated to an extrudable temperature while a mixture of high impact polystyrene and organopolysiloxane is similarly heated and extruded and the two molten melts are joined homogeneously under temperature and pressure within the die head to form a mechanically strong track having a low friction sliding surface.