Apparatus for manufacturing a wrapper web provided with a tear-o

Details Apparatus for manufacturing a wrapper web provided with a tear-o Apparatus for manufacturing a wrapper web provided with a tear-o

1973-10-03

1976-01-20

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

With cutting, punching, piercing, severing, or tearing

156554, 156582, 156583, 93 1TS, B32B 3120, B32B 3500

Patent

active

039335682

ABSTRACT:
Apparatus for manufacturing a wrapper web provided with a tear-open strip is disclosed. A web of wrapper material is fed along a generally planar guide path and two parallel incisions are made in the web to separate a narrow central strip of material therefrom. This narrow strip is raised out of the planar guide path, along which the two edge pieces on each side of the narrow strip continue to be fed. The two edge pieces are urged towards one another until mutually facing edges of the two edge pieces abut against one another below the centre of the narrow strip. The narrow strip is then guided back into the planar guide path so that it overlaps longitudinal edge portions of the two edge pieces, to which the narrow strip is adhesively or heat bonded to provide a web having a tear-off strip.

REFERENCES:
patent: 1794674 (1931-03-01), Cumfer
patent: 3410745 (1968-11-01), Canepa
patent: 3551245 (1970-12-01), Gamberini
patent: 3566752 (1971-03-01), Dreher
patent: 3607573 (1971-09-01), Michaelides et al.
patent: 3798110 (1974-03-01), Von Gunten

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