Title: 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.

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Other info:

Inventors: Luke, John A. (Woodlands, EN)
Harrison, Raymond J. (Southampton, EN)

Application Number: 481094
Filing Date: 1974-06-20
Publication_date: 1976-03-16
Assignee: Brown & Williamson Tobacco Corporation (Louisville, KY)
Primary Class(es): 493/41 493/45, 493/129
Other Classes:
US Patent Ref:

3060814	Oct, 1962	Wagner et al.	93/1.
3128680	Apr, 1964	Schaa, Jr.	93/1.
3373750	Mar, 1968	Beam	93/77.
3405717	Oct, 1968	Berger et al.	93/1.
3485144	Dec, 1969	Willis et al.	93/1.
3824906	Jul, 1974	Vanhall	93/77.

Other Refs:
Primary Examiner: Coan, James F.
Assistant Examiner:
Attorney: Smith; Vance A.