Manufacturing container or tube from paper; or other manufacturi – Cigarette filter making – With shaping or compacting of filter material
Patent
1979-05-22
1981-02-24
Coan, James F.
Manufacturing container or tube from paper; or other manufacturi
Cigarette filter making
With shaping or compacting of filter material
493 42, 493 47, A24C 550
Patent
active
042525276
ABSTRACT:
A filter is formed by placing increments of glue in spaced apart relation on a moving stream of plug wrap paper and thereafter depositing alternating fibrous filter sections on the glue increments. Particulate material is then deposited between the fibrous filter sections and the plug wrap paper wrapped about the filter sections to form an endless rod. Two-filter filter plugs are severed from the rod by cutting through the unglued fibrous filter section and thereafter the charges of particulate filter material are compacted by moving the unglued outer filter sections of each plug inwardly. Each plug is then joined to two tobacco columns and cut in half. The resultant filters each have a fibrous filter section at the exposed end glued to the plug wrap paper, a compacted particulate section and an unglued fibrous filter section at the tobacco end.
REFERENCES:
patent: 2787244 (1957-04-01), Hickin
patent: 3086879 (1963-04-01), Lassiter
patent: 3545345 (1970-12-01), Aronson
patent: 3805682 (1974-04-01), Lyon et al.
patent: 3991708 (1976-11-01), Huebschmann et al.
patent: 4063494 (1977-12-01), Hall
Coan James F.
Liggett Group Inc.
Ross, Jr. J. Bowen
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