Patent ID: 7115310

Claim:
A packaging laminate consisting of two prefabricated laminates and an intermediate adhesive layer, wherein: a. the first prefabricated laminate consists of a plastic substrate film coated on both sides with a layer of SiO x C y in which x is within the range of 1.5–2.2 and y is within the range of 0.15–0.80, wherein at least one of the SiO x C y layers is formed by vapor deposition on the substrate film by a plasma enhanced chemical vapor deposition method while stretching the substrate film, wherein the SiO x C y layers have a cohesion strength of at least 5.7 GPa, and wherein the SiO x C y layers have an interface shear strength with the plastic substrate film of at least 170 MPa; b. the second prefabricated laminate comprises a core layer coated on both sides with a layer of heat-sealable thermoplastic polymer; and c. the second prefabricated laminate is bonded to one side of the first prefabricated laminate by an intermediate adhesive layer.