Thermoplastic elastomeric film extrusion process

Details Thermoplastic elastomeric film extrusion process Thermoplastic elastomeric film extrusion process

1977-10-18

1979-12-11

Lowe, James B.

Plastic and nonmetallic article shaping or treating: processes

With step of cooling to a temperature of zero degrees c. or...

260 4R, 260 4AR, 260 5, 260 27R, 260 27EV, 260 27BB, 260 285R, 264176R, 264211, 264349, B29D 702, B29B 300

Patent

active

041783379

ABSTRACT:
A single screw extrusion process for extruding a mixture of relatively high molecular weight thermoplastic elastomer particles and relatively low molecular weight resin particles, wherein the particulate mixture is supercooled and maintained at temperatures below that which would cause the mixture to agglomerate and stick to the screw until the axial driving forces on the mixture have increased to the extent they will overcome any tendency of the mixture to stick to the screw, thereby assuring steady state extrusion conditions.

REFERENCES:
patent: 2622469 (1952-12-01), Gray
patent: 2702410 (1955-02-01), Brown
patent: 3783072 (1974-01-01), Korpman
patent: 3984509 (1976-10-01), Hall et al.

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