Patent ID: 6521312
Filing Date: 2003-02-18
Classification: B32B,C09J,G03C,Y10S,Y10T

Abstract:
A multilayer structure comprising:(a) first and second outer film layers, each comprising at least one thermoplastic polymer, each of said first and second outer film layers defining a thickness and further having a flexural modulus value exceeding 1500 MN/m2; and (b) an intermediate layer comprising at least one unoriented olefinic polymer disposed between and bonding said first and second outer film layers to form a unitary multilayer composite structure, said intermediate layer having a flexural modulus value which is less than the flexural modulus value of each of said first and second outer film layers and a thickness that is greater than the thickness of either of the first and second outer film layers, said unitary multilayer structure having an adhesion strength between said intermediate layer and said first and second outer film layers that is greater than the cohesive strength of at least one of said first, second, and intermediate layers, said unitary multilayer structure further having a flexural modulus value greater than the flexural modulus value of said intermediate layer.