Envelopes – wrappers – and paperboard boxes – Paperboard box – Cylindrical or conical body – or wall structure
Patent
1976-05-10
1977-02-22
Moorhead, Davis T.
Envelopes, wrappers, and paperboard boxes
Paperboard box
Cylindrical or conical body, or wall structure
229 21, 229 55, 229 56, 229 57, B65D 304, B65D 310
Patent
active
040088464
ABSTRACT:
A substantially leakproof container, particularly adapted for the shipment and storage of frozen liquids, liquid materials, and moisture sensitive materials, is provided. The body of the container comprises a generally cylindrical side or body wall portion and an integral base portion and is constructed from a unitary, thermoplastic coated, paperboard blank. The side or body wall portion is foldably connected to the base portion. The base portion comprises a plurality of foldably connected panels, the panels being folded in such a manner as to form first and second upstanding member whereby an annular channel is formed between the two upstanding members. The first upstanding member comprises at least one panel which lies in face-to-face contact with the lower surface of the cylindrical body wall portion. This panel is of greater height than the height of the second upstanding member. The second upstanding member comprises, preferably, two foldably connected panels, one of which is joined to the bottom edge of one panel of the first upstanding member and the other of which is joined to the bottom edge of the body wall portion of the container. A first end closure member or plug seals the base portion of the container and includes a downwardly projecting peripheral flange that occupies the annular channel formed between the two upstanding members. A second end closure member or cap is provided for sealing the upper end of the container. The container is rugged and is designed to maintain its substantially leakproof condition when its bottom edge is subjected to impact occasioned by the dropping of the container during its shipment and/or storage.
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patent: 3402876 (1968-09-01), Kuchembecker
patent: 3712530 (1973-01-01), Croley
Ancel Richard J.
International Paper Company
Moorhead Davis T.
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