Patent ID: 8551587
Filing Date: 2013-10-08
Classification: B32B,Y10T

Abstract:
1. A film comprising at least one core layer sandwiched between at least two skin layers, the layers comprising: (i) a core layer comprising polypropylene and within the range of from 20 wt % to 50 wt %, by weight of the materials in the core layer, of a propylene-α-olefin elastomer having within the range of from 5 wt % to 25 wt % α-olefin derived units, by weight of the copolymer; and (ii) skin layers comprising one or more polymers having a melting point within the range of from 125° C. to 160° C., a Shore D Hardness within the range of from 55 to 70, and a Flexural Modulus (ISO 178) of at least 500 MPa; wherein the film has a Haze value of less than 10%, and wherein the MD dimensional stability value is less than −10% (15 sec at 135° C.), and a TD dimensional stability value within the range of from −2% to 8% (15 sec at 135° C.).