Heat sealed carton

Details Heat sealed carton Heat sealed carton

1991-12-31

1993-07-27

Coan, James F.

Package making

Methods

Closing package or filled receptacle

533709, 493134, B65B 5120

Patent

active

052302040

ABSTRACT:
A gable-top carton has a pair of panels (4, 6) which form sloping walls and have marginal portions (4m, 6m). Another pair of panels (3m, 5m), are tucked beneath the sloping walls and have marginal portions (3m, 5m). The marginal portions (3m-6m) are heat sealed together to form a ridge-shaped seal. One panel (5) is the pouring spout panel and this is revealed when wings (9, 10), on the sealed carton are folded back. The pouring spout panel (5) is secured by a bond (34) made in a central folded corner (26), a bond (35, 36) between outer corners of the wings (9, 10), and a bond between confronting surfaces of the marginal portions 4m, 6 m). Areas on the marginal portions (4m, 6 m) are not directly heated to facilitate opening of the pouring spout whilst providing an hermetic seal.

REFERENCES:
patent: 3309841 (1967-03-01), Egleston et al.
patent: 3314216 (1967-04-01), Fitzwater
patent: 3405505 (1968-10-01), Mistarz
patent: 3724093 (1973-04-01), Olila
patent: 3825408 (1974-07-01), Farfaglia et al.
patent: 4838009 (1989-06-01), Connor et al.

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