Manufacture of cigarettes

Details Manufacture of cigarettes Manufacture of cigarettes

1975-01-13

1977-05-03

Queisser, Richard C.

Measuring and testing

With fluid pressure

Leakage

G01M 326

Patent

active

040206750

ABSTRACT:
A testing device for filter-tipped cigarettes comprises a first source of positive or negative pressure arranged to be connected to at least one end of each cigarette to be tested, to produce an air flow through the wrapper of the cigarette, means for monitoring the pressure or flow rate of the air flow to detect the presence of an excessively leaky wrapping, and means for defining a chamber around the cigarette in the region of the joint between the filter and the tobacco-filled part of the cigarette and for connecting the chamber to a second source of negative or positive pressure.

REFERENCES:
patent: R27277 (1972-01-01), Williamson
patent: 3395570 (1968-08-01), Kochalski
patent: 3408858 (1968-11-01), Kaeding et al.
patent: 3612252 (1971-10-01), Yu
patent: 3677068 (1972-07-01), Schmermund
patent: 3757564 (1973-09-01), Blackburn et al.
patent: 3760631 (1973-09-01), Doerman
patent: 3769832 (1973-11-01), Baier
patent: 3913381 (1975-10-01), Heitmann
patent: 3943752 (1976-03-01), Doerman et al.

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