B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
B65D 3/22 (2006.01) B31C 3/04 (2006.01) B65D 3/26 (2006.01) B65D 81/20 (2006.01)
Patent
CA 2315609
A tubular container for expansible food products is provided according to the present invention that includes a flexible liner having opposed end portions secured to respective ends of a tubular body wall. The tubular body wall has opposed ends and inner and outer surfaces and comprises a wound strip of material having opposed side edges. An end closure is secured to each end of the tubular body wall and can hermetically seal the container. A vent hole may be formed through the body wall and the label by way of a laser for allowing the passage of air therethrough. The flexible liner is secured to the respective ends of the tubular body wall by way of an adhesive band between the liner and the inner surface of the tubular body wall. The flexible liner thus has a free medial portion between the end portions which moves inwardly against the expansible food product when a vacuum is applied during packaging, and which also then moves outwardly against the inner surface of the tubular body wall as the product expands. The liner preferably comprises a flexible and stretchable liner formed of at least one polymeric layer without foil and paper layers.
Cahill Glenda J.
Lowry James W.
Sim & Mcburney
Sonoco Development Inc.
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