A laminated packaging material for containers for liquids includes a thermoplastic material outermost layer, a paper substrate layer and a thermoplastic material innermost layer, the thermoplastic material innermost layer comprising a blend of a linear low density polyethylene (LLDPE) and a low density polyethylene (LDPE), the blend having a low swelling ratio in a range from 0.9 to 1.2. The blend further may have a melt flow index in a range from 5 to 20 dg/min. The LLDPE component of the blend is made by polymerization in the presence of a single site catalyst and has an average density a range from 0.86 to 0.92 g/mL and a peak melting point a range from 55 to 105° C. The thermoplastic material innermost layer prepared using such blends advantageously has a low layer thickness a range from 8 to 25 μm.