Filler is in plastic molding process, the various additives, fillers and require a small amount of carrier resin are kneaded to obtain pellets, the carrier resin, fillers and various additives composed of three parts, the use of performance and cost depends on carrier resin.

Filler production of key technologies:

Select (1) carrier resin
In the scope of TSP as filler filler very wide application. Choose a carrier resin for masterbatch use is essential for optimum performance and low cost masterbatch products.
Woven products, raw materials are polypropylene, polypropylene woven products for the filler which was undoubtedly the best carrier resin powder polypropylene.

A. polypropylene base material has good compatibility;
B. price is lower than polyethylene, polypropylene pellets using both the antioxidants and lubricants remained significant price advantage;
C. Low density (0.9g / cm3), the number of copies of the same quality polypropylene than polyethylene has a larger volume, thereby increasing the area of ​​contact with the TSP powder;
D. reached base after the processing temperature of polypropylene having a melt viscosity of small, favorable masterbatch dispersion;
E. mixed with powdered TSP convenient, uniform, easy to operate, will help improve the masterbatch production efficiency.

The downside of polypropylene powder as a carrier resin using a high processing temperatures, and can not be used when the masterbatch melt leaving the die cooling Hot granulated form.

(2) GCC selection
Production and Application of filler 20 years showed that 400 mesh heavy calcium is the most affordable raw material, but not all of the heavy calcium have been woven masterbatch production enterprises and enterprises welcome, the key lies in the GCC whiteness pink hue and metal parts (barrel, screw, mold, blades, etc.) and other wear severity.

Use more granular triple superphosphate, in the case of fully dispersed, woven products with better mechanical properties, but with the increase in the number of heavy calcium entry, must increase the use of additives and the carrier resin, resulting mother filled a substantial increase in raw material costs, and therefore both technical and economic considerations from their combined effect, provide personalized products for different users.

(3) Processing equipment and technology
Heavy calcium sulfate and surface treatment using a high speed mixer. In recent years, high-speed mixer structure has done a lot to improve the characteristics of the powder processing.

In mixing granulation stage, processing equipment may have different options, such as building blocks in the same direction parallel twin-screw extruder, mixing and single-screw extruder. Recently three-screw extruder for masterbatch began mixing and granulation, mixing with a good effect, the advantages of higher productivity. Select the device starting point is better mixing effect, under the premise of the same labor, energy yield is higher, stronger on the types of materials and components of adaptability to changes, continuous smooth operation, durable, etc., and for the temperature control system Some may require relatively loose.

After the key is to try not to use granulated brace cooling process, due to the resistance causes of water masterbatch carrier resin content is too low, it is bound to affect production costs. Furthermore over the water, the moisture content of the product is difficult to control, will be adversely affected when the users.

Filler can be used for processing plastic film, garbage bags, shopping bags, vest bags, packaging bags, dispersion, and blown no white spots and black spots, fineness, security products, gloss and toughness. Mainly applicable bags, packing tape, filling modification hollow products, pipe, sheet, injection molding products and plastic snack can improve plastics performance, reduce product cost.

We Hangzhou Yujie Chemical Co., Ltd. specializes in producing masterbatch filled with modified, non-woven masterbatch, various functional masterbatch product! Welcome to inquire the relevant Product Details Oh!