Melt extrusion process

Details Melt extrusion process Melt extrusion process

1977-03-21

1978-06-06

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Pore forming in situ

Composite article making

264 98, 264176R, 526106, 526352, B29C 1707

Patent

active

040936929

ABSTRACT:
This application discloses a melt extrusion process for preparing articles of manufacture of improved properties from very high molecular weight linear ethylene polymers having an annealed density greater than about 0.94 gms/ml. The ethylene polymer employed in the process has melt flow properties such that the relationship between its slope parameter (S) and its apparent melt viscosity in poises at 1 sec..sup.-1 (A.sub.o) is defined by the formula:

REFERENCES:
patent: 2930789 (1960-03-01), Kerber
patent: 3574808 (1971-04-01), Matthews
patent: 3784661 (1974-01-01), Schaul et al.
"Gains Are Made in Extruding HMW PE Powders", Plastics Technology - vol. 21, No. 2, 2-1975, Cancio et al., pp. 40-44.

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