Sift-proof carton and method and adhesive dispensing means for producing same
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United States of America Patent
Stats
-
May 21, 1991
Grant Date -
N/A
app pub date -
Sep 6, 1989
filing date -
Jan 20, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a high-integrity closure, sift-proof carton [10], a method and an adhesive dispensing apparatus for producing same. Foamed hot melt adhesive is dispensed in parallel strips from dispensing guns onto the flaps [20], [22], [30], [32] of the carton [10], which are thereafter folded down to close the carton [10]. The strips can be spaced so that a continuous tight adhesive seal is formed, especially by providing a strip pattern interdigitating when the flaps contact each other. Since all strips are provided in parallel, while the carton is moved with respect to the dispensing apparatus, application of adhesive is fast and reliable.
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Cited Art Landscape
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