Cigarette manufacture

Details Cigarette manufacture Cigarette manufacture

1989-06-09

1992-09-22

Millin, Vincent

Tobacco

Cigar or cigarette making

Including perforating

2191217, 21912171, A24C 560, B23K 2600

Patent

active

051488183

ABSTRACT:
Laser perforation apparatus for filter cigarettes includes a drum (10) for conveying cigarettes (11), bands (33, 34) for slowly rotating each cigarette as it is conveyed by the drum, and a laser beam deflector (21, 22) carried by a tubular member (19) coaxially and rotatably mounted relative to the drum, the tubular member being rotated at relatively high speed and the laser being pulsed so that successive pulses are directed by the deflector towards successive cigarettes and each cigarette thus has a number of perforations formed in its wrapper as it is conveyed between the drum and the bands.

REFERENCES:
patent: 3483873 (1969-12-01), Hinzmann
patent: 4281670 (1981-08-01), Heitmann et al.

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