Co-extruded Oriented Down-gauge PE Film (Grade no. DL) BOPE is a type of Co-extruded Bi-axially Oriented PE film offers a number of benefits over traditional blown PE: High web strength allows as much as 50% Reduction of the total thickness of packing materials. Outstanding hot tack and heat sealing performance for high speed lamination and FFS operation. Excellent optical property, web flatness, and High stiffness, impact-resistance, puncture-resistance at low temperature down to -30â?? Good barrier performance. Stable surface tension provides good printing conditions.