Extrusion process for mixtures of elastomer particles and resin

Details Extrusion process for mixtures of elastomer particles and resin Extrusion process for mixtures of elastomer particles and resin

1975-06-30

1976-10-05

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

156244, 260 27BB, 260 297R, 260 328R, 264171, 264176R, 264211, 427207R, B29B 302, B29H 900

Patent

active

039845095

ABSTRACT:
A process for extruding thermoplastic elastomeric film using a single screw extruder to extrude a particular type of a potentially sticky dry particulate mixture comprising relatively high molecular weight thermoplastic elastomer particles and relatively low molecular weight resin particles wherein the particulate mixture is fed starved, advanced axially, and prevented from sticking to the screw by mechanically displacing the mixture rotatively with respect to the screw in a prescribed portion of the feed section of the extruder, thereby preventing surging or uneven extrusion due to irregular feeding of the potentially sticky mixture.

REFERENCES:
patent: 2541201 (1951-02-01), Buecken et al.
patent: 3160915 (1964-12-01), Wallace et al.
patent: 3239478 (1966-03-01), Harlan, Jr.
patent: 3398014 (1968-08-01), Turner
patent: 3592710 (1971-07-01), Yurgen et al.
patent: 3634574 (1972-01-01), Reinking et al.
patent: 3744770 (1973-07-01), Ocker
patent: 3767754 (1973-10-01), Manning et al.
patent: 3783072 (1974-01-01), Korpman
patent: 3929323 (1975-12-01), Smith
Fisher--Extrusion of Plastics, - Iliffe Books Ltd., New York, Interscience Publishers, June-1964-pp. 89-90.

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