Method and apparatus for the measurement of cell size in a foam

Optics: measuring and testing – For size of particles

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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

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