Composite plastic track and method of making

Details Composite plastic track and method of making Composite plastic track and method of making

1984-03-02

1986-01-21

Schofer, Joseph L.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

428447, 428451, 264171, 264177R, 15624425, 211 592, B32B 328

Patent

active

045657254

ABSTRACT:
A plastic track of composite construction is for use as an 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 polystryene is heated to an extrudable temperature while a mixture of high impact polystryene 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 strack having a low friction sliding surface.

REFERENCES:
patent: 2218444 (1940-10-01), Vineyard
patent: 4470943 (1984-09-01), Preis
"Silicone-Lubricated Thermoplastics" Duncan et al., Nov. 1972 issue of Modern Plastics.
"Information About Silicone Fluids" Dow Corning.RTM. 200 Fluid Silicone Plastic Additive.

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