Electric heating – Metal heating – By arc
Patent
1979-06-11
1981-11-24
Albritton, Clarence L.
Electric heating
Metal heating
By arc
219121LK, 219121LP, B23K 2700
Patent
active
043026540
ABSTRACT:
Disclosed is a method and apparatus for perforating cigarette tipping paper which holes may be obvious or which may be so small as to be "non-obvious". The holes produced range upward from about 0.025 mm. (0.001") or 0.051 mm. (0.002") and are rectangular. As shown in FIG. 4 the web (40) of tipping paper is moved in the direction of the arrow (44) about idler rolls (82) and in contact with at least one rotatable mask (100). The web (40) is in contact with the outer peripheral surface of the cylindrical wall of the masks (100) over a small area (90). The masks (100) are driven, usually at a greater linear rate of speed, in the opposite direction as indicated by the arrows (122) with respect to the movement (44) of the web (40). A laser beam (140) is projected against the interior surface of the cylindrical wall of the masks (100) in alignment with elongated slots (128, 132) which slots (128, 132) extend through the cylindrical wall of the masks (100). As a result of the movement of the masks and the web (40) of tipping paper, discrete areas of the sheet material (40) become sequentially aligned with the laser beam (140) which discrete areas are vaporized to form the holes (12, 14) of the web (40). The size of the holes (12, 14) of the web (40) are determined in one direction (parallel to the axis of rotation of the masks (100) and transverse to the machine direction) by the width of the laser beam (140) in the same direction and measured in its interface with the web (40). In the opposite direction, i.e. the machine direction, the dimensions of the holes (12, 14) are determined in part by the width of the slots (128, 132) and in part by the relative speed of motion of the web (40) and the masks (100) in opposite directions.
REFERENCES:
patent: 3075719 (1963-01-01), Hornstein
patent: 3098143 (1963-07-01), Warmt
patent: 3146283 (1964-08-01), Da Valle
patent: 3167641 (1965-01-01), Parmele et al.
patent: 3226527 (1965-12-01), Harding
patent: 3383065 (1968-05-01), Bergeron et al.
patent: 3419706 (1968-12-01), Lohrmann
patent: 3475591 (1969-10-01), Fujii et al.
patent: 3538308 (1970-11-01), Schmidt
patent: 3582466 (1971-06-01), Quirk
patent: 3594261 (1971-07-01), Broerman
patent: 3617702 (1971-11-01), Flournoy
patent: 3742182 (1973-06-01), Saunders
patent: 3757077 (1973-09-01), Siclari et al.
patent: 3808394 (1974-04-01), Mominee et al.
patent: 3858821 (1975-01-01), Beard et al.
patent: 3915264 (1975-10-01), Ohi
patent: 3946960 (1976-03-01), Hunter
patent: 4028525 (1977-06-01), Mominee et al.
Bennett William T.
Parks Bennie L.
LandOfFree
Microperforation of cigarette tipping paper by use of laser beam does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Microperforation of cigarette tipping paper by use of laser beam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microperforation of cigarette tipping paper by use of laser beam will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2176251