... suitable for non-reusable plastic bags, express delivery bag, confidential bag. Permanent Bag Sealing Tape Permanent bag sealing tapes have strong adhesive, ... plastic bags made of OPP, PP or PE materials. CONSTRUCTION Backing: Silicone Coated Pearlized Polypropylene Film ( PEPA )+ Class Liner Films ( PET ) Adhesive ... Mylar Width: 4mm, 7mm, 9mm, 11mm, 12mm, 14mm Glue Width: 3/3mm, 6/6mm, 8/8mm, 10/10mm, ...