B - Operations – Transporting – 65 – H
Patent
B - Operations, Transporting
65
H
131/83
B65H 37/00 (2006.01) A24D 3/02 (2006.01)
Patent
CA 1324940
ABSTRACT OF THE DISCLOSURE: A method and apparatus for producing tobacco smoke filter rods. In the method, filter tow comprising crimped spun fibers and/or filaments is prepared in a preparation zone and fed to a processing zone. There it is gathered, in an intake zone, then wrapped and cut into tobacco smoke filter rods. In the region of the intake zone, a gas or vapor under elevated pressure acts on the filter tow at an angle of less than 90° to the longitudinal axis of the filter tow in the direction of movement of the filter tow, The apparatus for carrying out the method, has a preparation unit and a processing unit, the latter unit containing for feeding a gas or vapor under elevated pressure to the filter tow in the direction of movement thereof: an intake finger having holes in the wall thereof on the filter tow intake side/ or a pipe, whose gas or vapor exit and terminates in the region of the filter tow outlet side of the intake funnel or the filter tow intake side of the intake finger, a blowing device immediately upstream of the filter tow intake side of the intake finger. The invention solves, in particular, the problem of non-uniform drawing resistances in the manufacture of tobacco smoke filter rods.
552982
Rhone-Poulenc Rhodia Aktiengesellschaft
Robic
LandOfFree
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