Apparatus for producing cylindrical filters

Details Apparatus for producing cylindrical filters Apparatus for producing cylindrical filters

1988-11-25

1990-04-17

Schmidt, Frederick R.

Manufacturing container or tube from paper; or other manufacturi

Cigarette filter making

With shaping or compacting of filter material

493 43, 493 45, 493297, 493299, 493300, 493302, 57336, 156441, 156180, B31C 1300

Patent

active

049176609

ABSTRACT:
Tows of fibers are wrapped around a mandrel or a central fiber core to form a cylindrical filter. At least one belt is located in position to make essentially linear contact with the cylindrical filter, and the at least one belt is driven so as to draw the tows of fiber onto and wrap the mandrel or the central fiber core and so as to move the cylindrical filter axially relative to the mandrel or with the central fiber core.

REFERENCES:
patent: 2999503 (1961-09-01), Schur
patent: 3470051 (1969-09-01), Meyer
patent: 3538817 (1970-11-01), Brown
patent: 4395869 (1983-08-01), Priaroggia
patent: 4429524 (1984-02-01), Kress

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