Envelopes – wrappers – and paperboard boxes – Paperboard box – Lifting or suspending element
Patent
1990-05-21
1991-11-05
Moy, Joseph Man-Fu
Envelopes, wrappers, and paperboard boxes
Paperboard box
Lifting or suspending element
22911706, B65D 536
Patent
active
050625276
ABSTRACT:
A slotless, leakproof storage carton ideally adapted for storing medical waste and a unique blank which can be quickly folded to form the carton. Corrugated sheet stock is coated with a plastic liner and cut into blanks, which are thereafter scored. Each blank comprises a center panel, a pair of bordering width panels, a pair of bordering length panels, and four corner panels. The scoring lines comprises a first pair of spaced apart, parallel fold lines extending longitudinally, and a second pair of parallel fold lines crossing the width of the blank. Diagonal fold lines are scored into the corner panels. The center panel forms a bottom of the carton, and the width and length panels respectively form carton ends and sides. The corner panels foldably divided into separate segments which abut each other and overly the length panels. A knock down system, which permits erected cartons to be flattened, includes a knock down line which evenly bisects the blank and a cooperating pair of groups of generally triangular relief lines formed in the center panel. The assembled carton may be flattened by urging the length panels together, whereupon the width panels will fold into the carton interior. A similar deforming movement facilitated by the triangular relief lines enables the center panel to collapse outwardly from the carton. An optional, collapsible lid is preferably associated with each carton.
REFERENCES:
patent: 3927824 (1975-12-01), Razziano
patent: 4607786 (1986-08-01), Weaver
patent: 4830271 (1989-05-01), Lau et al.
patent: 4895250 (1990-01-01), Schifrin
Carver Stephen D.
Man-Fu Moy Joseph
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