Unitary double cavity carton

Details Unitary double cavity carton Unitary double cavity carton

1979-10-26

1981-05-12

Moorhead, Davis T.

Envelopes, wrappers, and paperboard boxes

Wrapper

Bottle

229 36, 229 44R, B65D 526, B65D 566

Patent

active

042667135

ABSTRACT:
Unitary double cavity cartons, for example, of the type commonly referred to as clam shell cartons, are provided in which lines of weakness, adjacent the center hinge and positioned to form a hinge ridge or channel upon closing, permit the carton to open freely without buckling or tearing.

REFERENCES:
patent: 1826962 (1931-10-01), Spare
patent: 2887389 (1959-05-01), Linville
patent: 3038650 (1962-06-01), Asman
patent: 3084843 (1963-04-01), Urban
patent: 3232518 (1966-02-01), Williamson
patent: 3825169 (1974-07-01), Meyers
patent: 3968922 (1976-07-01), Ruud
patent: 4232816 (1980-11-01), Johnson et al.

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