Melt rheometer control

Details Melt rheometer control Melt rheometer control

1984-07-12

1986-03-04

Levy, Stewart J.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Viscosity

G01N 1104

Patent

active

045733457

ABSTRACT:
A method for measuring the viscosity of a foamable plastics melt where accurate readings are difficult because of the melt material beginning to foam while in the rheometer test section slit. The pressure on the melt is elevated above the foaming point and maintained at an elevated level during the entire time during which the melt sample is diverted through the rheometer.

REFERENCES:
patent: 3048030 (1962-08-01), De Haven
patent: 3116630 (1964-01-01), Piros
patent: 3138950 (1964-06-01), Welty et al.
patent: 3360986 (1968-01-01), Rothschild
patent: 3952577 (1976-04-01), Hayes et al.
patent: 4241602 (1980-12-01), Han et al.
patent: 4425790 (1984-01-01), Bice et al.
patent: 4449395 (1984-05-01), Kurtz et al.

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