Everyone knows that PE is mainly used for film blowing, so the products produced by customers have different requirements for PE particles. For example, when downstream customers produce transparent plastic bags, they will have high requirements for PE transparent particles, which are very difficult in transparency and whiteness. If it's a new material, it's relatively less difficult. If it is recycled materials, it is difficult to improve later. Just like one of my domestic clients, he is making PE white granules. He is making new materials, but his products are a little yellow and blunt, and he is not satisfied with his own products. At first, he didn't trust us. Later, after our technical communication and later cooperation, he gave me video feedback a few days ago, and the whiteness and brightness met his requirements. Therefore, sometimes we have to resort to foreign additives to improve it. However, if used as additives, manufacturers have many concerns about whether these additives will destroy the properties of raw materials, have adverse side effects, and achieve good whitening effect. Because of concerns, dare not try.

We are a manufacturer specializing in whitening agents for 20 years. Fluorescent whitening agent OB is a whitening agent specially used for soft plastics. It is the main product of our company, and can be applied to food packaging, etc. It not only has high weather resistance, heat resistance, light fastness, fading resistance, whitening and brightening, but also has the best brightening property. A small amount of additives can achieve good results. If necessary, please feel free to consult us.