Process for producing smoking articles with reduced ignition...

Details Process for producing smoking articles with reduced ignition... Process for producing smoking articles with reduced ignition...

A - Human Necessities

24

D

A24D 1/02 (2006.01) A24C 5/46 (2006.01) A24D 1/10 (2006.01)

Patent

CA 2427830

A process for reducing the permeability of a paper wrapper (14) used in the construction of a smoking article (10) is disclosed. The paper wrapper (14) is treated with a film-forming composition (52) that forms treated discrete areas (18) on the wrapper. The treated discrete areas (18) have a permeability within a predetermined range sufficient to reduce the ignition proclivity properties of a smoking article (10) made with the wrapper (14). In accordance with the present invention, the film-forming composition (52) is applied as multiple layers (31, 33, 35) to the paper wrapper 14). After each application step, the wrapper (14) is dried. Applying the film-forming composition (52) to the paper wrapper (14) in multiple layers (31, 33, 35) minimizes distortion and other adverse affects that may occur to the wrapper (14).

L'invention concerne un procédé destiné à réduire la perméabilité d'une enveloppe de papier (14) utilisée dans la fabrication d'un produit du tabac (10). Cette enveloppe de papier (14) est traitée au moyen d'une composition filmogène (52), laquelle forme des zones séparées traitées (18) sur ladite enveloppe. Ces zones séparées traitées (18) présentent une perméabilité comprise dans une plage de valeurs prédéterminée impliquant une réduction du risque d'allumage pour un produit du tabac (10) fabriqué avec cette enveloppe (14). Selon la présente invention, on applique cette composition filmogène (52) sous forme de couches multiples (31, 33, 35) sur l'enveloppe de papier (14). Après chaque étape d'application, ladite enveloppe (14) est séchée. L'application de la composition filmogène (52) sur l'enveloppe de papier (14) sous forme de couches multiples (31, 33, 35) permet de réduire la distorsion et d'autres effets indésirables pouvant se produire sur cette enveloppe (14).

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