Production of cigarette filter units

Details Production of cigarette filter units Production of cigarette filter units

A - Human Necessities

24

D

131/83

A24D 3/00 (2006.01) A24D 3/02 (2006.01)

Patent

CA 1040047

ABSTRACT Cigarette filter units are made in a long strip with alternate portions of fibrous and pourable filter material. The fibrous portions are first attached at spaced intervals to a sheathing strip which is wrapped practically right around them to form a cylinder with regular empty spaces between the fibrous portions and openings into the spaces. In a special unit, air is extracted from these spaces so that when the spaces enter a chamber containing pourable filter material, they suck the material in to fully fill the spaces. excess filter material is brushed off the filter unit, and a sealing strip is stuck over the openings.

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