Patent ID: 6919113

Claim:
A multilayered film for use in making an in-mold label, comprising: a core layer having a first surface and a second surface; and an ink-printable layer overlying the first surface of the core layer, the core layer being comprised of a polymeric mixture, and an antistatic additive and particulate solids dispersed in the polymeric mixture; the polymeric mixture comprising a first polymer and a second polymer; the first polymer being a high density polyethylene, a polypropylene, a polystyrene, a polyester, a copolymer of ethylene and propylene, a polyester copolymer, a polyamide, a polycarbonate or a mixture of two or more thereof; the second polymer being a high melt flow polypropylene, a polybutylene, a copolymer of butene-1 and ethylene, or a mixture of two or more thereof; the multilayered film being a co-extruded, hot-stretched and annealed film having a machine direction orientation wherein the film was hot-stretched at a first temperature above the expected service temperature of the label to provide the film with a machine direction orientation, and the film was annealed at a second temperature above the expected service temperature of the label; the density of the film being reduced by about 10% to about 25% relative to an unstretched film; the film having a machine direction Gurley stiffness value in the range of about 30 to about 120; the film having a machine direction shrinkage of less than about 3%; and the film having a machine direction shrink tension at 200° F. (93.3° C.) of less than about 100 psi.