Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1996-12-16
1998-12-01
Sells, James
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156 731, 156359, 156361, 156554, 1565801, 1565802, B29C 6508
Patent
active
058432531
ABSTRACT:
The method and device for sealing a narrow tape to a strip of heatsealable material in cigarette packing machines, which produce packets of cigarettes protected by an external wrapper made of plastic which can be torn using the said tear tape; to avoid a thermal degradation in the sections of heatsealable strip adjacent to the sealing zone, the present invention envisages sealing the narrow tape to the strip by passing them through a sealing unit, in contact with one another, and joining them with an ultrasound sealer which directs the ultrasound to at least a zone in which the narrow tape and strip overlap; the intensity of the heatsealing action of the ultrasound is controlled and adjusted by elements which detect the feed speed of the narrow tape and strip.
REFERENCES:
patent: 3651615 (1972-03-01), Bohner et al.
patent: 3728199 (1973-04-01), Stanley
patent: 4304615 (1981-12-01), Siegel
patent: 4531999 (1985-07-01), Persson et al.
patent: 4906318 (1990-03-01), Miyazaki
patent: 5059277 (1991-10-01), Willhite, Jr. et al.
Draghetti Fiorenzo
Stivani Eros
G.D.S.P.A.
Sells James
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