Patent ID: 6872459
Filing Date: 2005-03-29
Classification: B32B,Y10T

Abstract:
1. A laminated material for food packaging which comprises; at least a paper core layer; a quality keeping intermediate layer; and a heat sealable innermost layer; the quality keeping intermediate layer comprising an extrusion coatable blend polymer containing 50-95% of polymer component A of condensation polymer (nylon-MXD6) of meta-xylene diamine and abipic acid or ethylene vinyl alcohol copolymer (EVOH), 5-50% of polymer component B of nylon-6 (PA-6), nylon-66 (PA-66), blend (PA-6/66) with nylon-6 and nylon-66 or polyethylene terephthalate (PET); the quality keeping intermediate layer being immediately adjacent the core layer; and the innermost layer consisting of a blend of metallocene LLDPE and linear low density polyethylene which blend has a narrow molecular weight distribution, and has a mean density of 0.910-0.925, a 100-122 degrees C. peak melting point, a melt flow index of 5-20, a swelling ratio (SR) of 1.4-1.6, and a 5-50-micrometer layer thickness and which is a thin layer of 6-12 g/m