Porous wraps for smoking articles

Details Porous wraps for smoking articles Porous wraps for smoking articles

1977-05-12

1978-08-01

Kaplan, Morris

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

427265, 427288, 427411, B05D 138, B05D 510

Patent

active

041044312

ABSTRACT:
The disclosure relates to a method and apparatus for treating porous wrapping material for a smoking article, for example a cigarette filter. According to the invention, the porous material is provided, by coating with a film-forming substance, with an impervious region or regions positioned to coincide with a region or regions at which adhesive is to be applied, the said substance being dried or set before such adhesive is applied. Thus, a line or lines of the film-forming substance may be applied to the same face of the wrapping material as a line or lines of adhesive for sealing the wrap and/or anchoring filtering material thereto, namely to that face which will be on the inside of the wrap formed from the said material.

REFERENCES:
patent: 2126192 (1938-08-01), Humphner
patent: 2149896 (1939-03-01), McArdle et al.
patent: 2170140 (1939-08-01), Grupe
patent: 2868685 (1959-01-01), Downs et al.
patent: 3563781 (1971-02-01), Johnson

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