Production of tobacco smoke filter rod

Abstract

The invention relates to a method for wrapping a continuous filter rod and producing tobacco-smoke filter sections which comprises feeding a wrapping strip of a thermoplastics film material, particularly a heat-shrinkable thermoplastics material, past an applicator for applying adhesive to the edges of the strip and, together with a filtering medium, to garniture means for wrapping the said strip around the said medium, which means includes a sealing station consisting of or comprising a cooled long folder, provided with a semicylindrical groove closely matching the rod size and of a length sufficient to permit setting of the adhesive to form a seam between the said edges, and feeding the wrapped rod thus produced to a cut-off device with guiding means for the cut-off sections. Preferably the adhesive is a solvent for the thermoplastics material.

Dependencies are inferred from the claim text.