Method and apparatus for making tobacco smoke filters

Details Method and apparatus for making tobacco smoke filters Method and apparatus for making tobacco smoke filters

1976-06-22

1977-11-22

Coan, James F.

Tobacco

Tobacco users' appliance

Cigar tip perforators or slitters

93 77FT, 131 105, A24C 550

Patent

active

040590437

ABSTRACT:
Tobacco smoke filters and methods and means for making same wherein the products have a composite substantially cylindrical inner member formed from two semi-cylindrical inner elements and overwrapped with a common plug wrap. The composite inner member has a discrete inner cavity formed in each semi-cylindrical element and a composite cavity formed by a depressed portion in each semi-cylindrical element. A substantially smooth outer surface is provided on the composite inner member for attaching a conventional plug wrap without the need for an internal glue line. Separate cylindrical elements are reformed into semi-cylindrical elements and crimped to provide depressed pockets, following which the semi-cylindrical elements are mated and overwrapped to produce the final product.

REFERENCES:
patent: 3546325 (1970-12-01), Muller
patent: 3847064 (1974-11-01), Berger

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