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Polypropylene laminate film, and package comprising the same

  • US 7,879,439 B2
  • Filed: 02/18/2005
  • Issued: 02/01/2011
  • Est. Priority Date: 03/18/2004
  • Status: Active Grant
First Claim
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1. A film roll of a polyolefin laminate film wound into a roll, the polyolefin laminate film comprising an oriented base layer mainly comprising a polypropylene resin and a sealing layer mainly comprising a polyolefin resin which is formed on at least one surface of the base layer, which film has a product takeout width of not less than 500 mm and satisfies the following relational formula of a width direction thickness variation rate Y (%) of the aforementioned film and a product takeout width X (mm) of the film:


  • Y≦

    0.001X+4,wherein the polyolefin laminate film of the roll has a product takeout width of not less than 500 mm and a length of not less than 2000 m.

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