Anisotropic thin polyethylene sheet and applications thereof and the process of making the same
AssigneeMuCell Extrusion, LLC
InventorsMehdi Saniei, James K. Sakorafos, Nicholas R. Torraco, Mark E. Lindenfelzer
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Abstract
This invention relates to an anisotropic multilayer film and the process of making a multilayer film, wherein a supercritical blowing agent is introduced to at least one layer, wherein at least one layer comprises 10 to 100 percent by weight LLDPE with a melt index of 0.2 to 2 g/10 min. The film in this invention can have a surface with an average Sheffield smoothness, according to TAPPI T 538, of less than 100. The film in this invention can have a puncture propagation tear resistance, in accordance with ASTM D2582, greater than 500 g/mil.
Claims17
An anisotropic multilayer film wherein at least one layer comprises polyethylene, the resulting film has a surface with an average Sheffield smoothness of less than 100, according to TAPPI T 538, and all of the layers are solid layers.
An anisotropic multilayer film wherein at least one layer comprises polyethylene, the resulting film has a puncture propagation tear resistance greater than 500 g/mil, according to ASTM D2582, and all of the layers are solid layers.
Dependencies are inferred from the claim text.