Optics: measuring and testing – For size of particles
Patent
1979-03-28
1982-05-11
Corbin, John K.
Optics: measuring and testing
For size of particles
356239, G01N 1507
Patent
active
043290523
ABSTRACT:
A method and apparatus are provided to continuously monitor and measure the average size of individual foam cells contained in a foam structure, such as polystyrene foam for example, as it is being fabricated. Such an arrangement permits the prompt adjustment of process conditions and/or the concentration of nucleating agents in the extrusion system in the event the size of the individual cells in the foam structure varies from a preselected standard.
REFERENCES:
patent: 3572947 (1971-03-01), Sepall
patent: 3574470 (1971-04-01), Paine
patent: 3786261 (1974-01-01), Tucker
patent: 3879129 (1975-04-01), Inoue
Colombo Edward A.
Tsai James T.
Corbin John K.
Gilman M. G.
Huggett C. A.
Koren Matthew W.
Mobil Oil Corporation
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