Patent ID: 7901758
Filing Date: 2011-03-08
Classification: B29C,B31F,B32B,B65D,Y10T

Abstract:
1. A flexible laminate comprising a monofilm-formed or multifilm-formed flexible ply A, and a monofilm-formed or multifilm-formed flexible ply B, both comprising orientable thermoplastic polymer materials, in which the ply A has a fluted configuration and the ply B on a first side is adhesively bonded in bonding zones to crests on a first side of the ply A, where: (a) the ply B also has a fluted configuration, a flute direction of the ply B forms an angle from about 30° up to and including 90° to a flute direction of the ply A and the bonding zones being on crests of the first side of the ply B to produce spot bonds with the crests on the first side of the ply A, (b) the adhesive bonding is (c) wavelengths of the flutes in the ply A and/or the ply B are no longer than 5 mm, and the wavelengths of the flutes in both the ply A and the ply B are less than 10 mm, and (d) the ply A is molecularly oriented in a direction parallel or substantially parallel to its flute direction as determined by shrinkage tests.