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UV Barrier Film

  • US 20100247898A1
  • Filed: 07/08/2008
  • Published: 09/30/2010
  • Est. Priority Date: 07/24/2007
  • Status: Active Grant
First Claim
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1. A polypropylene film comprising:

  • at least a first and a second ultraviolet (UV)-absorbing additive for improving film optical properties by reducing haziness;

    wherein said first additive comprises a non-aggregated inorganic material;

    wherein said first additive is present in the film in an amount ranging from 0.1% to 5.0% by weight;

    wherein said a second additive comprises an organic material selected from the group consisting of triazines, hindered amines, oxanilides, cyanoacrylates, benzotriazoles and benzophenones, andwherein said second additive is present in the film in an amount less than 2.0% by weight.

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