Porosity measuring apparatus and perforating system using same

Details Porosity measuring apparatus and perforating system using same Porosity measuring apparatus and perforating system using same

1979-06-08

1981-01-27

Myracle, Jerry W.

Measuring and testing

With fluid pressure

Porosity or permeability

73159, 219384, G01N 1508

Patent

active

042467756

ABSTRACT:
Porosity measuring apparatus for a moving web of sheet material comprising a sensor having a chamber and a wall provided with apertures communicating with the chamber and of number, spacing and dimension sufficient to obtain an air seal between the moving web and wall during application of a vacuum to the chamber.

REFERENCES:
patent: 3056281 (1962-10-01), Smyth
patent: 3466925 (1969-09-01), Ziegenhagen et al.
patent: 4118619 (1978-10-01), McArthur et al.
patent: 4121595 (1978-10-01), Heitmann et al.
Edenborough, L. D., How Wiggins . . . Porosity Meter, Sep. 12, 1966, from Paper Trade Journal - England, pp. 62-66.

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