US 2025/0026106 A1 · BIAXIALLY ORIENTED POLYOLEFIN FILMS

Abstract

A biaxially oriented multilayer film having a core layer that includes a polyethylene-based composition. The core layer has: a melt index (I2) that is from 0.2 g/10 min to 5.0 g/10 min; a density that is between 0.930 g/cm3 and 0.956 g/cm3; and an average short chain branch (SCB) level in the portion between log (Mw) of 4.0 to 5.0 (SCBlogMw4-5) that is greater than 3.5 SCB/1000c and less than 10.0 SCB/1000 C. The biaxially oriented multilayer film also includes at least one additional layer that includes a propylene-based composition.

Claims15

Dependent claims

A biaxially oriented multilayer film comprising:

a core layer comprising a polyethylene-based composition, the core layer having:
an overall melt index (2) that is from 0.2 g/10 min to 5.0 g/10 min;
an overall density that is between 0.930 g/cm3 and 0.956 g/cm3;
and
an average short chain branch level in a portion between log (Mw) of 4.0 to 5.0 (SCBlogMw4-5) that is greater than 3.5 SCB/1000 C and less than 10.0 SCB/1000 C;
and
at least one additional layer, the at least one additional layer comprising a propylene-based composition.

4 more elements

Dependencies are inferred from the claim text.

Biaxially oriented polyolefin films

Life of this patent

Biaxially oriented polyolefin films

Life of this patent

Abstract

Claims15