Multi-layered foil cigarette pack including method and apparatus

Details Multi-layered foil cigarette pack including method and apparatus Multi-layered foil cigarette pack including method and apparatus

1979-09-24

1981-09-01

Ross, Herbert F.

Special receptacle or package

For tobacco, pipe or cigarette holder

With opening or separating means

229 87C, 229 48R, 206624, 206633, B65D 8510, B65D 6528, B65D 554

Patent

active

042867126

ABSTRACT:
A multi-layer bonded foil 10 which forms the inner wrapper of a cigarette pack is provided with a tear line 14 to facilitate opening a tear flap 15. The tear line is formed by a fixed lower tool 25 having a raised rib 28 flanked by grooves 29, 30 and a reciprocable upper tool 20 having a pointed edge 21 and movable between guide supports 22, 23. The upper tool is heated and forced into the foil to stretch-weaken its upper polyester layer 11 and central aluminum foil layer 12, and to simultaneously heat soften and deform its lower polyethylene layer 13.

REFERENCES:
patent: 2897087 (1959-07-01), Lawlor
patent: 3572579 (1971-03-01), Mueller
patent: 3952868 (1976-04-01), Muller et al.
patent: 4101051 (1978-07-01), Reil
patent: 4158412 (1979-06-01), Wysocki
patent: 4226330 (1980-10-01), Butter

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