Aluminum film is plated on PE or PET plastic film, which belongs to plastic film in essence. Aluminum foil is a thin metal sheet, which improves the strength of the coil. There is no pearl cotton in the middle of aluminum film, so the heat insulation effect is poor; Aluminum foil has good heat insulation effect.
The outer layer of aluminum film is thin and the waterproof effect is poor; Aluminum film has better waterproof effect. The durability of aluminum film is relatively poor, and the plastic film will age within two years after exposure, completely losing its original reflective effect; The aluminum foil on the modified asphalt coil has a slightly better durability and a service life of about 5 years.