Static COF differential poly film ream wrap

  • US 6,818,346 B2
  • Filed: 05/05/2003
  • Issued: 11/16/2004
  • Est. Priority Date: 12/30/2002
  • Status: Active Grant
First Claim
Patent Images

1. A solid film ream wrapper comprising:

  • a first layer of polypropylene, biaxially oriented polypropylene (BOPP), or polyester solid film;

    a second layer of polypropylene, biaxially oriented polypropylene (BOPP), or polyester solid film;

    said first layer and said second layer having same Static Coefficient of Friction (COF) measurement; and

    a third layer of polymer, copolymer and/or terpolymer resins, alone, or blended with polyester, or any known adhesive, said third layer interposed between said first layer and said second layer;

    said first layer or said second layer being coated in a recurring pattern, design, logo, or other marking on one side with any material that alters said Static COF measurement by at least 0.02.

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