Exxonmobil Oil Corporation

Pang-Cha Lu

Benoit Ambroise

Provided is a polypropylene film, and a method of making the film, the film comprising at least one core layer sandwiched between at least two skin layers, the layers comprising 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-&#x3b1;-olefin elastomer having within the range of from 5 wt % to 25 wt % &#x3b1;-olefin derived units, by weight of the copolymer; and skin layers comprising one or more polymers having a melting point within the range of from 125&#xb0; C. to 160&#xb0; C., a Shore D Hardness within the range of from 55 to 70, and a Flexural Modulus of at least 600 MPa; wherein the film has a Haze value of less than 10%, the film being biaxially oriented but shrinkable substantially only in the MD.

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Pittsford, NY, United States of America

Pang-Cha Lu