Locking join for boxes and apparatus for making the join

Details Locking join for boxes and apparatus for making the join Locking join for boxes and apparatus for making the join

B - Operations, Transporting

65

D

B65D 5/42 (2006.01)

Patent

CA 2112218

A non-releasable mechanical join useful for permanent joins of plastics material cartons is formed by a row of a plurality of engagement tabs interlocked in a complementary row of slots. The engagement tabs have heads able to pass through the slots in one direction but unable to return in the other direction. The tab heads may be formed as arrowheads, the barbs of which act against edges of the slots are convexly arcuate towards the approaching arrowheads. This may help to provide secure engagement. The greater number of tabs and slots, the greater may be the permanence of the join.

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