Sealing tape is also called BOPP tape and packaging tape. It is based on BOPP biaxially oriented polypropylene film, which is evenly coated with hot-melt pressure-sensitive adhesive after heating to form 8 μ m—-28 μ M, forming BOPP tape master roll, and then cutting into small rolls with different specifications by slitting machine, which is the tape we use every day. It is an indispensable article for light industrial enterprises, companies and personal life.