Tips about using PE non-adhesive warning tape. PE non-adhesive warning tape is made of PE and has different colors. It has the characteristics of opacity, hard to tear, high viscosity, and insulation. At the same time, it can be twisted up to be waterproof and sunscreen. In the case of avoiding exposure to the sun and special factors, it can be peeled off without leaving glue. PE non-adhesive warning tape is very cost-effective, and it is a very good tape.