METHOD AND APPARATUS FOR HIGH-SPEED FILLING OF COMBINED CIGARETTE FILTERS Russian patent published in 2007 - IPC A24D3/02 

FIELD: cigarette industry, in particular, method for manufacture of combined filtering means.

SUBSTANCE: method involves placing fibrous filtering segments onto carrier belt in spaced-apart relation to, thereby, define cavities between adjacent filtering segments; directing carrier belt with filtering segments placed thereon along operating path into elongated supporting chamber essentially embracing periphery of said carrier belt holding filter segments while leaving narrow filling opening opposite opening for feeding of bulk filler material, said narrow filling opening extending along direction of advancement of carrier belt; simultaneously providing vacuum or suction force to zone adjoining narrow opening to, thereby, enhance bulk material feeding force directed downward under the action of gravity for sucking of free falling bulk material; simultaneously filling cavities with bulk material along the length corresponding to predetermined value by which carrier belt is to be advanced; applying sealing part which embraces filtering segments and bulk material.

EFFECT: increased speed of filling process and increased percentage of filling combined cigarette filters.

9 cl, 7 dwg