Stack-sealable, heat-shrinkable multilayer packaging film

heat shrinkable multilayer film comprising: (A) a first layer which is an outer layer, and comprising polyolefin; (B) a second layer comprising at least one element selected from the group consisting of polyolefin, polystyrene and polyurethane, wherein the second layer has a thickness of from 10 to 50 percent, based on the total thickness of the movie; (C) a third layer comprising a polyamide having a melting point of 160 ° C and lower; and (D) a fourth layer which is an outer layer, and which comprises polyester having a melting point of from 170 to 260; and wherein the film has a total free shrink, at 85 (185), of from 40 to 170 percent.