Transparent polyethylene resin, sodium sulfate, and surface treatment agent are added tothe high-speed mixer in a certain proportion, and then extruded and granulated with atwin-screw extruder to produce sodium sulfate transparent filling masterbatch. Sodiumsulfate transparent filling masterbatch is a plastic modifier with ultra-fine anhydrous sodiumsulfate as the main raw material, which is widely used in the processing of plastic products.The refractive index of sodium sulfate is similar to that of polyethylene resin, and the additionhas little effect on the transparency of plastic products, which can maintain the transparencyof products. Transparent filler masterbatch has excellent compatibility with polyethylene (PE),polypropylene (PP) and other resins, and can be evenly dispersed during processing, withoutaffecting the melt flow of the product and without changing the processing process. It canimprove the toughness and dimensional stability of plastics, improve the surface gloss andprinting performance of products, and at the same time do not affect the physical properties,and also have the characteristics of acid and alkali resistance, organic solvent resistance, andexcellent electrical insulation performance. It is suitable for the processing process of a varietyof plastic products, such as blown film, blow molding, injection molding, pipes, sheets andother PP and PE plastic products. Among them, the addition of blown film is 5%-50%, theaddition of blowing molding is 15%-30%, and the addition of sheets, plates, tubes, andinjection molding can be added by 10%-30%. Sodium sulfate transparent filling masterbatchhas the advantages of large filling volume and low cost, which can effectively reduce theproduction cost of plastic products and improve the economic benefits of enterprises underthe premise of ensuring product quality