Polypropylene, bioriented or not, is a standard raw film type used for face stock applications. We use commonly solid and cavitated films, clear and white. Most of the time they will be top coated on the reverse to offer an even better keying to a wide range of adhesives (look at our TDS for more details). We use base films that are widely accepted and approved by the label industry like BOPP white 60 µm or BOPP clear 50 µm. This ensures a trouble-free PSA coating, label converting and end-user usage.