09
Thermal, Oxygen and Photoaging Discoloration
Many people think that to solve the problem of inconsistent color in the processing of PVC seals, as long as the yellowing profile production line can reduce the processing temperature, the color difference can be reduced. However, some people believe that the yellowing of PVC, CPE, stabilizers, and other major auxiliary raw materials in different batches of PVC, CPE, stabilizers, there will be different color differences in processing. In this case, even if a certain amount of whitening agent and anti-photoaging agent are added alone, they will not play a very important role.
