What type of whitening agent can PVC soft glue use?

Soft glue is made of plastic by injection molding. It feels soft at room temperature. Many people call it "soft glue". In the general plastics industry, PP, PE and other plastics with light weight and relatively low surface hardness are called soft glue. PS, ABS, as, rigid PVC and other plastics can be called hard glue.

 

PVC soft glue is widely used, such as tablecloth used on dining table, water pipe, etc. Because some manufacturers recycle the secondary materials, but the whiteness of the products can not meet the requirements, so it is generally necessary to add fluorescent brightener to whiten, but not all brighteners can be used. Shanghai enmai Xiaobian will tell you which brighteners can be used on PVC soft glue?

 

In the whitening process of PVC soft rubber products, many people think that adding fluorescent whitening agent OB-1 can play a whitening role, which is not allowed. Experiments have proved that the compatibility of fluorescent whitening agent OB-1 and PVC soft rubber is very poor, and it is easy to migrate and precipitate, which seriously affects the stability of product appearance. Therefore, Shanghai enmai Xiaobian suggests that when you choose brighteners, you'd better choose fluorescent brightener fp-127 or ob, especially transparent products. The selected brightener must be of good quality, and the addition amount should be controlled within a certain range to ensure the light transmittance of the product.

 

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