Apparatus for increasing the permeability of wrapping material f

Tobacco – Cigar or cigarette making – Including cooperating surfaces to induce rolling

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Details

131 36, 219121EB, 219219, 219121L, A24B 714

Patent

active

042404487

ABSTRACT:
Webs which are to be converted into wrappers for filter rod sections, cigars, cigarillos or cigarettes, or the wrappers of such articles, are perforated by one or more laser beams in the machine wherein the articles are produced. The permeability of wrappers can be changed by increasing or reducing the number of holes and/or by increasing or reducing the size of holes in each wrapper. The permeability of the wrappers of finished articles is monitored and the intensity of laser beam or beams is automatically adjusted when the monitored permeability deviates from a desired value. The perforations are formed for the purpose of admitting cool atmospheric air which influences the quantity of nicotine and condensate in the column of smoke. The perforations are disposed close to or in the filter plugs of filter cigarettes, cigars or cigarillos, or close to one or both ends of each filter rod section or plain cigarette, depending on the length of such articles.

REFERENCES:
patent: 3291136 (1966-12-01), Boyer
patent: 3419321 (1968-12-01), Barber et al.
patent: 3808394 (1974-04-01), Mominee et al.
patent: 4013261 (1977-03-01), Steigerwald et al.
patent: 4032743 (1977-06-01), Erbach et al.

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