Manufacturing container or tube from paper; or other manufacturi – Cigarette filter making – With shaping or compacting of filter material
Patent
1979-10-04
1981-09-29
Coan, James F.
Manufacturing container or tube from paper; or other manufacturi
Cigarette filter making
With shaping or compacting of filter material
425105, 425115, 425374, 425392, 493 49, A24C 550
Patent
active
042920329
ABSTRACT:
For producing rod-shaped tobacco-smoke filter components each having one or more annular tobacco-smoke barriers, annular grooves open at their peripheries are formed in rod-shaped bodies of smoke-filtration material, the grooved bodies are conveyed in a direction transverse to their longitudinal axes along an arcuate path, and settable barrier material is deposited in the grooves during the conveyance along said path, the bodies being rotated about their said axes during the deposition of the barrier material.
Apparatus for producing said rod-shaped tobacco-smoke filter components comprises means for forming annular grooves open at their peripheries in rod-shaped bodies of smoke-filtration material, means for conveying the grooved bodies in a direction transverse to their longitudinal axes along an arcuate path, means for depositing settable smoke-barrier material in the grooves during the conveyance in the said path, and means for rotating the bodies about their said axes during the deposition of the barrier material. The means for depositing the barrier material may comprise a rotary disc member or members which extends or extend into the groove or grooves of each grooved body and a bath of the said material on which the rotary disc member or members is or are mounted so as to dip into the said material.
REFERENCES:
patent: 2954773 (1960-10-01), Lebert
patent: 3164157 (1965-01-01), Lebert
patent: 4149546 (1979-04-01), Luke et al.
patent: 4213470 (1980-07-01), Horsewell et al.
patent: 4219033 (1980-08-01), Horsewell et al.
British-American Tobacco Company Limited
Coan James F.
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