Packaging structure and apparatus useful in its assembly

Details Packaging structure and apparatus useful in its assembly Packaging structure and apparatus useful in its assembly

1978-03-07

1980-05-20

Coan, James F.

53372, 53376, B31B 122

Patent

active

042033551

ABSTRACT:
An end construction for a sealed carton comprises a first weakness line disposed between the closure panel end flap and an extension thereof. The first weakness line is severable by a wire over which the panel and its extension are sealed to a carton end, by gluing, in a form, fill, and seal apparatus. Severance of the first weakness line by the wire is effected as the sealed carton is moved through the apparatus. A second weakness line is provided in the closure end flap and extends with angularity to the first weakness line to intersect same. A resulting triangular section of the closure end flap is glued, as is the severed flap extension to the end of the carton, and retains the closure in closed position until such time the second weakness line is torn upon moving the closure to open position. The severed flap extension remains glued to the end of the carton to reinforce same and maintain its assembly.

REFERENCES:
patent: 2913863 (1959-11-01), Sylvester et al.
patent: 3106876 (1963-10-01), Dewhurst
patent: 3283991 (1966-11-01), Hughes
patent: 3307329 (1967-03-01), Lefief
patent: 3355857 (1967-12-01), Tobey
patent: 3443353 (1969-05-01), DiVecchio
patent: 3533214 (1970-10-01), Standley
patent: 3534666 (1970-10-01), Maccherone
patent: 3559368 (1971-02-01), Standley et al.
patent: 3597900 (1971-08-01), Scott
patent: 3733772 (1973-05-01), Dichiara
patent: 3741081 (1973-06-01), Lutz

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