Patent ID: 6858275

Claim:
An irradiated multilayer film comprising: (A) a first layer which is an outer heat seal layer containing a blend of: (i) a highly branched homogeneous polymer having at least 40 branches per 1000 methylene groups, the highly branched polymer having an M w /M n less than 3.0, a density of less than 0.89 g/cc, the highly branched homogeneous polymer being present in an amount of from about 1 to 50 weight percent, based on layer weight, and (ii) a semicrystalline polyolefin having a density of at least 0.90 g/cc, the semicrystalline polyolefin being present in an amount of from about 60 to 99 weight percent, based on total layer weight; and (B) a second layer containing a thermoplastic polymer in a crosslinked polymer network.