04768703 is referenced by 49 patents and cites 20 patents.

An open ended carton including a membrane liner and a cover having a peripherally depending flange which overlies a top end portion of the carton. A transverse score line in the cover and contiguous perforation lines in the flange divide the cover into first and second sections to provide a hinged pour spout. An extension panel attached to a peripheral edge of the carton includes a terminal section which is heat sealed to an interior section of the peripheral cover flange. Severance of a hinged section of the extension panel defines an indentation between a top panel in the cover and the terminal section which receives the hinged section for locking reclosure of the cover. The cover is locked in open position by inward flexing of sections of the peripheral cover flange which are received in the carton opening.

Title
Barrier carton with reclosable pour spout
Application Number
6/936207
Publication Number
4768703
Application Date
December 1, 1986
Publication Date
September 6, 1988
Inventor
Thomas P Hambleton
Thompson Ridge
NY, US
James L Sosler
Florida
NY, US
Agent
Walt Thomas Zielinski
Assignee
International Paper Company
NY, US
IPC
B65D 5/54
B65D 43/16
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