Polymer film with renewable content

A process for producing a polymer film having a multilayer structure, the multilayer structure comprising an inner polymer layer interposed between first and second outmost polymer layers, the process comprising;

• forming the multilayer structure by co-extruding the inner polymer layer interposed between the first and second outermost polymer layers, wherein:
• (i) the inner polymer layer comprises a melt blend of:
• (a) a starch containing a polymer composition comprising polyethylene, thermoplastic starch, and one or more compatibilizers;
• (b) a metallocene polyethylene having a melt flow index in the range of 0.5 to 2.5 g/10 min and a density in the range of 0.916 to 0.935 g/cm3;
• (c) a polyethylene having a melt flow index in the range of 2 to 4 g/10 min and a density in the range of 0.918 to 0.925 g/cm3;
• and
• (d) a polyethylene have a melt flow index in the range of 0.05 to 0.2 g/10 min and a density in the range of 0.948 to 0.955 g/cm3;
• (ii) the first and second outermost polymer layers independently (a) comprise a metallocene polyethylene having a melt flow index in the range of 0.5 to 2.5 g/10 min and a density in the range of 0.916 to 0.935 g/cm3, or (b) have a heat seal initiation temperature of no greater than 120° C., wherein at least one of the first and second outermost polymer layers has the heat seal initiation temperature of no greater than 120° C.