Cigarette manufacture

Details Cigarette manufacture Cigarette manufacture

1990-11-30

1993-02-16

Brown, Theatrice

Tobacco

Cigar or cigarette making

Including perforating

2191217, 21912171, B23K 2600, A24C 138

Patent

active

051861844

ABSTRACT:
Cigarette perforating apparatus comprises a rotary stepped reflector (5) for directing an incident laser beam (2) along a reflected path (2R) to produce axially spaced perforations on a cigarette. The size of the perforations is controlled by varying the duration of the reflected beam by means of a mask (8) which is rotatable with the reflector and effective to intercept the beam for varying periods dependent on the radial distance at which the beam is incident on the reflector. The reflected beam (2R) may be further divided to provide separate beam paths (e.g. leading to the separate cigarette tracks in a filter attachment machine) by means of a further reflective disk (12) synchronized with the stepped reflector.

REFERENCES:
patent: Re31478 (1983-12-01), McArthur et al.
patent: 4519680 (1985-05-01), Grollimund
patent: 4585919 (1986-04-01), Mattei et al.
patent: 4701591 (1987-10-01), Masaki et al.
patent: 4720619 (1988-01-01), Mattei et al.
patent: 4767909 (1988-08-01), Okumoto
patent: 4827947 (1989-05-01), Hinz
patent: 4860773 (1989-08-01), Okumoto et al.
patent: 4916272 (1990-04-01), Okumoto et al.
patent: 4961080 (1990-10-01), Henderson et al.

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