Patent ID: 8313821
Filing Date: 2012-11-20
Classification: B32B,B67D,Y10T

Abstract:
1. A container liner comprising at least one sheet bonded along portions thereof to form at least one peripheral seam bounding an interior volume, with the at least one sheet comprising a fluoropolymer film layer, a barrier film layer, and a third film layer, with (i) the fluoropolymer film layer bonded along at least peripheral portions thereof to the barrier film layer and (ii) the third layer bonded along at least peripheral portions thereof to the barrier film layer, wherein said fluoropolymer film layer contacts said interior volume, and said barrier film layer is disposed between said fluoropolymer film layer and said third layer; wherein said liner is characterized in that the at least one sheet comprises a peripheral common weld zone extending through all layers of said container liner and forming said at least one peripheral seam bounding said interior volume, and the at least one sheet comprises a peripheral common lamination zone disposed a non-zero distance of no more than 6.4 millimeters inboard of said common weld zone, wherein said common lamination zone extends through a first thickness and a second thickness of the at least one sheet including all layers of said at least one sheet; and wherein the peripheral common lamination zone is formed at a temperature below the differential scanning calorimetry (DSC) melting point value of the layer of the first, second, or third layer comprising the lowest DSC melting point value.