Composite container liner with self-supporting sealant web

Details Composite container liner with self-supporting sealant web Composite container liner with self-supporting sealant web

B - Operations, Transporting

32

B

B32B 15/08 (2006.01) B32B 13/12 (2006.01) B65D 25/14 (2006.01) B65D 81/24 (2006.01)

Patent

CA 2508749

There is provided a liner for a container that provides a gas and moisture barrier. The liner includes a first sealant web of polyethylene that defines a self-supporting layer of the liner. An adhesive layer is applied to an outer surface of the first sealant web, and a metal foil layer is adhered to the adhesive layer. A second sealant layer is attached to the metal foil layer. The second sealant layer may be heat-sealed to the first sealant web so that when the liner is adhered to the inside surface of a container, the liner may be sealed to itself with a lap seal. The first sealant web defines a self supporting layer because it provides structural support to the liner. Accordingly, the first sealant web advantageously serves as a carrier web for the liner while the liner is being manufactured.

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