Temperature control for PET strapping. The temperature of the extruder according to the raw materials, the head temperature is usually about 5-10℃ higher than the body temperature,.If too low, it will cause the surface easy to crack.So the control is particularly important, we have some  heating ways,such as oil, steam and electric.Secondly, the PET strapping generally requires the roller reduction temperature not exceeding 100℃ .