Envelopes – wrappers – and paperboard boxes – Paperboard box – With closure for an access opening
Patent
1988-10-13
1990-03-20
Elkins, Gary
Envelopes, wrappers, and paperboard boxes
Paperboard box
With closure for an access opening
229920, 229DIG4, 428172, 428 342, B65D 542
Patent
active
049094327
ABSTRACT:
A paper container for containing liquid such as milk and juice is disclosed. The container is formed of a thick paper provided thereon with vertical and horizontal folding lines intersecting each other at right angles. The intersecting portions of the folding lines are such formed as to be different in configurations for a predetermined length. In this way, splits and pin holes can be prevented from occurring when the thick paper is folded along the grooves to build up a container.
REFERENCES:
patent: 3098599 (1963-07-01), Hagan
patent: 4291826 (1981-09-01), Swanson
patent: 4586650 (1986-05-01), Sasaki et al.
patent: 4819861 (1989-04-01), Nagata
Elkins Gary
Jujo Paper Co. Ltd.
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