Apparatus for computing flow rate of thermoplastic material

Details Apparatus for computing flow rate of thermoplastic material Apparatus for computing flow rate of thermoplastic material

1980-05-07

1982-06-08

Myracle, Jerry W.

Measuring and testing

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

Viscosity

G01N 1104

Patent

active

043333362

ABSTRACT:
Disclosed is a method and device for automatically and instantaneously computing and displaying with high precision the flow rate of thermoplastic samples run in an extrusion plastometer in accordance with American Society of Testing Materials (ASTM) Method D1238. The method and device comprise using a microcomputer and related circuitry to monitor and control the measurement process and subsequently compute the resulting flow rate.

REFERENCES:
patent: 3807221 (1974-04-01), Brown et al.
patent: 4062225 (1977-12-01), Murphy, Jr. et al.
patent: 4109516 (1978-08-01), Fuxa
patent: 4241602 (1980-12-01), Han et al.
ASTM Standard No. D 1238-79, pp. 468-479, 1979.
Advertisement for Monsanto "Automatic Capillary Rheometer", 3 pages, No date.
Advertisement for Melt Rheometer in Apr., 1980, issue of "Laboratory Equipment", vol. 16, No. 12.

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