Method of preparing a mixture for making extruded resin articles

Details Method of preparing a mixture for making extruded resin articles Method of preparing a mixture for making extruded resin articles

1974-11-29

1977-03-15

White, Robert F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 4256, 260 4257, 260 27R, 264 407, 264121, 264122, 264211, 264349, 526 1, C08L 9100, C08J 320

Patent

active

040123480

ABSTRACT:
A mixture to be used making an extruded resin article, specifically extruded polyvinyl chloride pipe, and a method of preparing this mixture are disclosed herein. The mixture includes a resin, specifically polyvinyl chloride (PVC), in particulate form and a nonresinous filler material, for example, calcium carbonate, also in particulate form dispersed throughout the PVC. The particles of filler material are adhered to adjacent PVC particles to reduce segregation of the two types of particles. The method by which these particles are adhered to each other includes the use of a second resin which is also in particulate form and which has a lower melting point than that of the PVC resin.

REFERENCES:
patent: 3334163 (1967-08-01), Gilbert
patent: 3616149 (1971-10-01), Winckhofer
patent: 3716609 (1973-02-01), Trocciola et al.

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