Electrical insulating crepe paper and polyester tape are two different types of electrical insulation materials.
Crepe paper is a paper product that has been treated with a special process to give it a wrinkled, or “creped,” texture. This texture makes it more flexible and able to conform to irregular shapes. Electrical insulating crepe paper is specifically designed for use as an insulation material in electrical applications. It has good dielectric strength and thermal resistance, and is commonly used in transformers, motors, and other electrical equipment.
Polyester tape, also known as Mylar tape, is made from a thin film of polyester (PET) that has been coated with a layer of adhesive. It is a high-strength, durable material with excellent electrical properties, including high dielectric strength and low dielectric constant. It is commonly used as a primary electrical insulation material in transformers, motors, and other electrical equipment, as well as for cable wrapping, heat-sealing, and other industrial applications. Polyester tape is also often used in combination with other insulating materials, such as crepe paper or mica tape, to provide additional insulation or other properties.