Sealable carton with improved 4-ply spout and method of making s

Details Sealable carton with improved 4-ply spout and method of making s Sealable carton with improved 4-ply spout and method of making s

1999-05-12

2000-05-09

Elkins, Gary E.

Envelopes, wrappers, and paperboard boxes

Paperboard box

Having means to facilitate opening the box by severing box...

229217, 229930, 493128, 493151, 493156, 493183, B65D 574

Patent

active

06059182&

ABSTRACT:
A novel box construction is provided having a numerous sealing features therein to provide a waterproof and sift resistant container. A first sealing feature is a pouring spout of three or four plies, the first and second plies of which provide a way for opening the spout. The construction of the spout also allows improved sealing because of its snap open and close feature. A second sealing feature uses transverse scoring of numerous panels and flaps with the scoring formed at the juncture between adjacent panels and flaps during manufacture and before assembly. A third sealing feature is the application of heat activated contact glue in several different patterns, including surrounding the spout with a glue border, applying "L"-shaped glue patterns on the perimeter of one panel, adding a glue border around almost the entire perimeter of one panel, and finally, applying glue on entire bottom panels and dust flaps.

REFERENCES:
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patent: 2069281 (1937-02-01), Sebreny
patent: 2898026 (1959-08-01), Aid
patent: 2989224 (1961-06-01), Umanoff
patent: 3140809 (1964-07-01), Hickin et al.
patent: 3328189 (1967-06-01), Bauer
patent: 3411695 (1968-11-01), Cupo
patent: 3438565 (1969-04-01), Lugt et al.
patent: 4816306 (1989-03-01), Brady et al.
patent: 5452850 (1995-09-01), Allsop

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