Clear polyester Mylar film and crepe paper tape are two separate types of tape. Clear polyester Mylar film tape is made of a thin layer of polyester film coated with an adhesive. It is commonly used for electrical insulation, labeling, and other applications where a strong, clear tape is needed. Crepe paper tape, on the other hand, is made of crepe paper and coated with an adhesive. It is often used for painting, masking, and other general-purpose applications.