Cigarette testing

Details Cigarette testing Cigarette testing

1977-03-14

1978-11-28

Gorenstein, Charles

Measuring and testing

With fluid pressure

Porosity or permeability

G01N 1508

Patent

active

041270258

ABSTRACT:
In the manufacture of ventilated filter-tipped cigarettes the continuous wrapper web for the filter rod is formed, at least at longitudinally spaced positions, with perforations or semi-perforations to allow a significant air flow into the filters of the finished cigarettes.
The invention includes an apparatus for testing such ventilated cigarettes to check that the degree of ventilation is adequate.

REFERENCES:
patent: 3395570 (1968-08-01), Kocholski
patent: 3769832 (1973-11-01), Baier
patent: 3967491 (1976-07-01), Preston

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