Apparatus for making filament tobacco smoke filters

Claim 1

IN A FILTER-MAKING APPARTUS COMPRISING, A FILTERFORMING GARNITURE, MEANS FOR FEEDING A STRIP OF FILTER WRAP PAPER INTO SAID GARNITURE ALONG A PREDETERMINED PATH, MEANS FOR FEEDING CELLULOSE ACETATE FILTER-FORMING FILAMENTS INTO SAID GARNITURE TO BE ENWRAPPED THEREIN BY SAID STRIP, AND MEANS FOR APPLYING A COATING TO SAID STRIP BEFORE IT IS FED INTO SAID GARNITURE, THE IMPROVEMENT WHEREIN SAID FILTER WRAP PAPER IS FURTHER CHARACTERIZED BY HAVING A THICKNESS OF LESS THAN 0.06 MILLIMETER AND SAID COATING CONTAINS A PLASTICIZER FOR CELLULOSE ACETATE; AND SAID COATING APPLYING MEANS COMPRISES AN APPLICATOR HAVING A SLOT FOR APPLYING SAID COATING TO SAID STRIP, STRIP SUPPOTING MEANS FOR GUIDING SAID STRIP AS IT MOVES IN SAID PATH, AND MEANS SUPPORTING SAID APPLICATOR IN CONTACT ADJACENT SAID SLOT WITH SAID STRIP, AT A POSITION DOWNSTREAM OF SAID STRIP SUPPORTING MEANS, SAID STRIP BEING DEFECTED FROM SAID PATH BY SAID CONTACT, WHEREBY A UNIFORM, CONTINUSOU COATING IS APPLIED AT HIGH SPEEDS TO SAID STRIP WITHOUT TEARING IT, AND FILAMENTS, WHICH CONTACT THE COATED STRIP, ARE BONDED TO IT IN SAID GARNITURE.