Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Automatic analytical monitor and control of industrial process
Patent
1980-12-29
1983-08-16
Marcus, Michael S.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Automatic analytical monitor and control of industrial process
364500, 422109, 422112, 422131, G06G 758, G01N 2722, G01N 3344
Patent
active
043991009
ABSTRACT:
The invention is directed to an apparatus and method for curing polymeric materials by use of a closed-loop, automatic process control technique. A dielectric monitoring device (15) senses the electrical characteristics which are analogous to viscosity changes taking place in an uncured or partially cured polymeric material (10) while heat is applied thereto. The generated analog signal, which changes in response to variations in the capacitance and dissipation of the polymeric material, is fed into a microcomputer (21) which determines from the direction and amplitude of the generated wave form both the maximum and minimum levels of capacitance and dissipation developed. When a predetermined condition is reached, the microcomputer (21) sends a control signal to processing equipment (24,25) to apply pressure, heat and/or vacuum to the polymeric material (10) at or near the onset of gelation but prior to the hardening point. The microcomputer (21) is programmed so as to discard random electrical signals and questionable data such as from short-term burst noises. The system can be used for curing various polymeric materials having differing characteristics.
REFERENCES:
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patent: 3614682 (1971-10-01), Smith
patent: 3791792 (1974-02-01), Lindsay
patent: 3846073 (1974-11-01), Baum et al.
patent: 3878379 (1975-04-01), Moody, Jr. et al.
patent: 4023096 (1977-05-01), Schmidt
Blad Leiv H.
Perkins Kelly M.
Zsolnay Andrew
Lockheed Corporation
Marcus Michael S.
Smith Frederic P.
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