Static of COF differential poly film ream wrap

A solid film ream wrapper, wrapped around a ream of paper, the solid ream wrapper comprising:na first layer of polypropylene, or biaxially oriented polypropylene (BOPP) solid film;a second layer of polypropylene, or biaxially oriented polypropylene (BOPP) solid film;said first layer and said second layer having a Static Cling Coefficient of Friction (COF) differential; anda third layer of polymer, copolymer, and/or terpolymer resin, alone or blended with polyester, or any known adhesive; said third layer interposed between said first and second layers.

A method, for making a solid plastic ream film ream wrapper and wrapping a ream of paper, comprising:nconveying a first layer comprising a polypropylene, or biaxially oriented polypropylene (BOPP) solid film and a second layer comprising a polypropylene, or biaxially oriented polypropylene (BOPP) solid film toward a pair of nip rollers; said first and second layers having a static coefficient of friction differential of at least 0.02;directing said first and second layers into an adjacent non-contact position with a polymer or adhesive layer on its respective opposite side prior to passing through said nip rollers;passing said layers through said nip rollers; forming said laminated solid plastic film ream wrapper;wrapping said solid plastic film ream wrapper around a ream of paper.

A method, for making a solid plastic ream film ream wrapper and wrapping a ream of paper, comprising:ncoating or applying to one side of a solid plastic film layer any material that alters the static coefficient of friction of said coating layer;conveying said coated film layer and a second plastic film layer having no coating to a pair of nip rollers;said first and second layers having a static coefficient of friction differential of at least 0.02;directing said first and second layers into an adjacent non-contact position with a polymer or adhesive layer on its respective opposite side prior to passing through said nip rollers;passing said layers through said nip rollers; forming said laminated solid plastic film ream wrapper;wrapping said solid plastic film ream wrapper around a ream of paper.

A method, for making a solid plastic ream film ream wrapper and wrapping a ream of paper, comprising:nconveying a first layer comprising a polypropylene, or biaxially oriented polypropylene (BOPP) solid film and a second layer comprising a polypropylene, or biaxially oriented polypropylene (BOPP) solid film toward a pair of nip rollers; said first and second layers having the same a static coefficient of friction;directing said first and second layers into an adjacent non-contact position with a polymer or adhesive layer on its respective opposite side prior to passing through said nip rollers;passing said layers through said nip rollers; forming said laminated solid plastic film ream wrapper;coating or applying to only one side of said solid plastic film ream wrapper any materials that alters the static coefficient of friction of said coating layerwrapping said solid plastic film ream wrapper around a ream of paper.