BLENDS OF LINEAR LOW DENSITY POLYETHYLENES

A polyethylene blend comprising a uniform dispersion of constituents (A) and (B): (A) a Ziegler-Natta catalyst-made linear low density polyethylene (ZN-LLDPE) and (B) a metallocene catalyst-made linear low density polyethylene (MCN-LLDPE); wherein the (A) ZN-LLDPE is from 15 to 75 weight percent (wt%) of the total weight of (A) and (B) and the (B) MCN-LLDPE is from 85 to 25 wt% of the total weight of (A) and (B); wherein by itself (A) is independently characterized by properties (i) to (ii): (i) a density from 0.905 to 0.930 gram per cubic centimeter (g/cm3), measured according to ASTM D792-13; and (ii) no detectable amount of long chain branching per 1,000 carbon atoms ("LCB Index"), measured according to LCB Test Method (described later); and wherein by itself (B) is independently characterized by properties (i) to (ii): (i) a density from 0.905 to 0.930 g/cm3, measured according to ASTM D792-13; and (ii) no detectable amount of long chain branching per 1,000 carbon atoms ("LCB Index"), measured according to LCB Test Method (described later); and with the proviso that the density of constituent (B) is within ± 0.003 g/cm3 of the density of constituent (A); and wherein the (A) ZN-LLDPE has 1-butene comonomeric units and a melt index value of 2.0 ± 0.1 g/10 min ("I2", 190° C., 2.16 kg) measured according to ASTM D1238-04 and the (B) MCN-LLDPE has a melt index value of 1.0 ± 0.1 g/10 min ("I2", 190° C., 2.16 kg) measured according to ASTM D1238-04.