US 12,201,138 B2
Seam-sealing adhesive application apparatus and associated method
Steven P. Bass, Raleigh, NC (US); and Paul Stuart Chapman, Winston-Salem, NC (US)
Assigned to R.J. REYNOLDS TOBACCO COMPANY, Winston-Salem, NC (US)
Filed by R. J. REYNOLDS TOBACCO COMPANY, Winston-Salem, NC (US)
Filed on Aug. 12, 2015, as Appl. No. 14/824,615.
Claims priority of provisional application 62/039,703, filed on Aug. 20, 2014.
Prior Publication US 2016/0050970 A1, Feb. 25, 2016
Int. Cl. A24C 5/00 (2020.01); A24C 5/24 (2006.01)
CPC A24C 5/00 (2013.01) [A24C 5/007 (2013.01); A24C 5/24 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for forming a smoking article rod, comprising:
engaging a continuous stream of a smokable filler material with a first surface of a longitudinally-continuous web of a wrapping material comprising a cigarette wrapping paper, the first surface being a wire-side surface of the cigarette wrapping paper, the web having laterally-opposed first and second edge portions extending along the longitudinally-continuous web, and having a second surface opposing the first surface, the second surface being a felt-side surface of the cigarette wrapping paper;
longitudinally wrapping the web of the wrapping material about the smokable filler material such that the wire-side surface about the first edge portion extends over the felt-side surface about the second edge portion, and so as to contain the smokable filler material within the longitudinally-continuous web; and
applying an adhesive material dispensed from a first applicator to the wire-side surface about and longitudinally along the first edge portion and applying the adhesive material dispensed from a second applicator to the felt-side surface about and longitudinally along the second edge portion separately and discretely from the adhesive material applied to the wire-side surface, prior to engaging the wire-side surface of the first edge portion and felt-side surface of the second edge portion, with the separate and discrete applications of the adhesive material dispensed from the first and second applicators disposed therebetween, to form a sealed seam and produce a longitudinally-continuous smoking article rod.