Smoke filter having extended film overwrap and method and...

Details Smoke filter having extended film overwrap and method and... Smoke filter having extended film overwrap and method and...

A - Human Necessities

24

D

131/17

A24D 3/00 (2006.01) A24D 3/02 (2006.01) A24D 3/04 (2006.01)

Patent

CA 1212008

ABSTRACT OF THE DISCLOSURE A tobacco smoke filter includes a smoke pervious rod of plastic material about which a smoke impervious plastic overwrap film is extruded. The the overwrap and the rod are made of the same material, i.e., cellulose acetate. By using the same material, waste from the normal filter-making processes can be formed into granules or pellets and rendered molten for re-cycling as the raw material for the overwrap film. The resulting filter can be used with or without a tipping paper cover and can be per- forated or not, as desired, to ventilate the filter rod.

417850

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