Whitening agent for PVC foam board

PVC foamed board is a kind of extruded board made of polypropylene, which has good chemical stability, heat resistance and electrical insulation. The appearance of PVC foam board is mainly white. Many manufacturers will encounter yellowing of white PVC foam board in the production process. In order to prevent this situation, fluorescent whitening agent is an indispensable whitening agent. How to choose fluorescent whitening agent for foam board?

 

Shanghai enmai Chemical Co., Ltd. has a lot of rich experience in the application of fluorescent brightener products. For a long time, the company has always insisted on serving every end customer well to meet the customers' demand for product whiteness. Enmai recommends to use fluorescent brightener 127 as the brightener used in PVC foam board.

 

How to use fluorescent whitening agent 127 in foam board?

 

1. The raw materials needed for the foam board are prepared, and then 0.02% fluorescent whitening agent 127 is added, which is stirred in the mixer at high speed, so that the fluorescent whitening agent and other raw materials can be fully and evenly mixed.

 

2. Through low-speed cold mixing, conical twin-screw extrusion, skinning foaming and cooling setting, all raw materials are evenly dispersed in the foam board.

 

3. Finally, the formed foam board is cut into standard specifications by the traction of multi cots. At this time, we can see that the whiteness of the foam board added with fluorescent whitening agent 127 is improved a lot.

 

If you want to improve the whiteness of PVC foam board, enmai chemical welcomes you to inquire. We provide you with professional one-to-one technical guidance and service