一、炉温加热曲线不对,温度过高或者过低都会导致喷塑层变色The heating temperature curve is wrong, temperature is too high or too low will cause discoloration of spray layer. 二、固化炉局部温度过高或者过低导致喷塑层变色,比如说靠近加热炉出风口的位置温度,容易导致局部变色Curing