The treatment method of plastic discoloration can be selected according to the degree of discoloration and the specific cause. Here are a few possible ways:
Adjust the molding temperature: If the discoloration of the plastic is caused by the molding temperature is too high, you can reduce the molding temperature to solve it, and gradually adjust the molding temperature according to the degree of discoloration and the type of plastic until a satisfactory appearance is achieved.
Replace the raw material: If the discoloration of the plastic is caused by the poor quality of the raw material or contains impurities, you can try to change the raw material to solve the problem. Choosing a raw material with better quality and purity can reduce the likelihood of discoloration of the plastic.
Increase exhaust: If it is caused by poor venting of the mold, it can be solved by increasing the venting hole or extending the exhaust time, which can avoid the interference of gas in the molding process of the plastic, thereby reducing the possibility of discoloration.
Adjust the mold temperature: If the mold temperature is too high, you can reduce the mold temperature. Depending on the degree of discoloration and the type of plastic, the mold temperature is adjusted step by step.
Redesign the mold: If it is caused by unreasonable mold design, you can consider redesigning the mold to solve this problem. Redesigning the mold optimizes the flow and cooling of the plastic during the molding process, reducing the potential for discoloration.
You can also choose high-quality, good temperature resistance, good weather resistance, no migration masterbatch or coloring matter, which can make the finished product bright and stable.
Or add functional masterbatches such as light stability, anti-oxidation, anti-aging, and anti-ultraviolet according to the needs to change the discoloration of plastic products and make the products durable.
Choose the appropriate method according to the specific situation, and also pay attention to the material and performance of the plastic, so as to avoid damage or deformation of the plastic caused by improper methods.