Patent ID: 11969929
Assignee: CELGARD, LLC
Field: Chemical engineering (Chemistry)
Classification: CPC B  H  D  Y | IPC B  D  H

Claim 31:
32. The method of claim 31, wherein:
the method comprises co-extruding a polymer mixture comprising polymer mixture to form a co-extruded precursor film;
the method comprises extruding a polymer mixture comprising an additive to form a mono-extruded precursor film and laminating the mono-extruded precursor film to at least one other film; or
the method comprises extruding a polymer mixture comprising an additive to form a mono-extruded precursor film and laminating the mono-extruded precursor film to at least one other film, wherein lamination involves the application of at least one of heat, pressure, or a combination thereof.