Method and apparatus for regulating the permeability of wrapping

Details Method and apparatus for regulating the permeability of wrapping Method and apparatus for regulating the permeability of wrapping

1977-10-11

1980-03-18

Millin, Vincent

Tobacco

Cigar or cigarette making

Including cooperating surfaces to induce rolling

131170R, A24C 532

Patent

active

041934091

ABSTRACT:
A web which is converted into wrappers of plain or filter cigarettes, or the wrapper or each cigarette is perforated by needles, teeth, punching tools, sparks or laser beams prior to arrival of corresponding cigarettes at a pneumatic testing station. The testing device at such station transmits signals which denote the permeability of successive wrappers, and the signals are compared with a reference signal denoting the desired permeability of wrappers. If the monitored permeability deviates from the desired permeability, the device which makes holes in the web or in the wrappers is automatically adjusted to change the combined area of holes.

REFERENCES:
patent: 3475591 (1969-10-01), Fujii et al.
patent: 3483873 (1969-12-01), Hinzmann et al.
patent: 3720095 (1973-03-01), Molins
patent: 3769832 (1973-11-01), Baier
patent: 3948084 (1976-04-01), Heitmann et al.
patent: 3962906 (1976-06-01), Heitmann et al.
patent: 3991605 (1976-11-01), Reuland
patent: 4061148 (1977-12-01), Goslin et al.

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