B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
229/19.2
B65D 5/06 (2006.01)
Patent
CA 1314849
ABSTRACT A gable-top thermoplastic coated container with controllably enhanced sealing and opening characteristics includes at least one stiffening fillet attached to the panels which form the spout. The fillet comprises a thin strip coated with a layer of adhesive, and is bonded to at least one of the pouring spout panels. The strip is resistant to the thermal container-sealing process, and extends along a major portion of the panel length to increase the force which may be transmitted to the tip of the spout where the foldback panels are adjoined, and prevent buckling of the spout panels. An adhesive web is delaminably bonded with a controlled release adhesive to the opposite surface of the strip, and is bonded to an opposed panel by the container sealing process. Delamination from the leakproof or hermetically sealed condition occurs at the interface between the strip and the delaminable adhesive, and is accomplished with a low opening force. The strip provides additional stiffness to the spout panels, enabling relatively high forces to be transferred to the spout tip where the opening forces act to open the container spout. The spout may be opened readily without significant tearing or delamination of the spout panels.
562677
Minnesota Mining And Manufacturing Company
Smart & Biggar
Wyberg Gregory R.
LandOfFree
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