Is the more whitening agents added, the better? Why add fluorescent whitening

White plastic products in many colors of plastic has been dominant, we often see white plastic in the production process, in order to achieve white and bright effect, often add a small amount of fluorescent whitening agent to improve the appearance of products. However, some manufacturers will reflect the same problem with us, that is, the products made by themselves with fluorescent whitening agents have not achieved an ideal whitening effect, while the effect of others is more obvious. What is the reason for this? Today Shanghai enmai will solve this problem for you.

 

1. The type of fluorescent brightener selected is not suitable

 

There are many types of fluorescent whitening agents used in plastics. Different types of fluorescent whitening agents have different appearance, melting point, heat resistance, compatibility and weather resistance. If plastic manufacturers do not choose the right fluorescent whitening agent, it is difficult for the whitening agent to play its due whitening effect.

 

Another important point is to ensure the quality of fluorescent whitening agent. After all, the content of whitening agent in the market is chaotic, and the phenomenon of shoddy is not surprising.

 

2. The amount of fluorescent brightener is not suitable

 

Any good product addition is not the more the better, if the fluorescent whitening agent exceeds the recommended dosage, not only can not play a whitening effect, on the contrary, there will be yellowing, or whitening agent precipitation.

 

But if the amount is too small, it will not achieve good whitening effect, so in the amount of plastic manufacturers also need to carry out their own initial debugging, to find the best amount.