Method and apparatus for producing fiber skeins

Manufacturing container or tube from paper; or other manufacturi – Control means energized in response to activator stimulated... – Cigarette filter making

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83856, 493 39, B65H 5914, B65H 5916

Patent

active

057332347

ABSTRACT:
A method of producing at least one filter skein for cigarettes and other smokable rod-shaped articles, from at least one filter tow strip comprises the steps of: (a) drawing at least one filter tow strip, from at least one supply, (b) feeding the at least one filter tow strip to a treatment in a treatment unit; (b1) at the beginning of the treatment unit, subjecting at least one filter strip to a brake force to adjust at least the quantity to be processed, the brake force being set automatically, and (b2) afterwards, stretching and fluffing the filter tow strip(s) by the use of two pairs of rolls, wherein the surface of one roll of at least one pair of the two pairs is smooth and the other roll is profiled over its entire surface, (c) after the treatment, collecting the treated filter tow strip from step (b) in a formating unit to at least one round skein with an enveloping material to form at least one continuous, wrapped filter skein, (d) detecting and measuring a characteristic value of the produced filter skein from step c), to obtain an actual value of the characteristic value, and (e) controlling and regulating the brake force as a function of the obtained actual value from step (d) and of a predetermined desired value of the characteristic value at the beginning of the treatment in step (b1), prior to the stretching step (b2), the brake force acting on the at least one filter tow strip. The apparatus is described.

REFERENCES:
patent: 4507107 (1985-03-01), Berger
patent: 5460590 (1995-10-01), Greiner et al.

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