Tubular container with a heat seal having non-symmetrical inner and outer beads
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United States of America Patent
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-
Apr 19, 2005
Grant Date -
Feb 7, 2002
app pub date -
Jul 17, 2001
filing date -
Feb 6, 1997
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A sealed composite container for products is provided having a paperboard body ply with a liner ply adhered on the inner surface thereof. One end of the container is rolled outwardly to form a rim and exposing the inner surface of the liner ply, which comprises a heat sealable composition. A lid for the container, also having a layer of heat sealable composition, is placed adjacent to the exposed heat sealable composition of the container liner and heat sealed thereto. The heat seal has both an inner and an outer bead formed on either side of the heat sealed area, wherein the inner bead comprises a larger amount of the heat seal compositions than the outer bead. A method and apparatus for forming the heat seal is also provided.
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