1. Weather resistance: as the stadium seat is used outdoors for a long time, the selected pigment should have excellent weather resistance, ultraviolet radiation resistance, and will not fade for at least three years. Many varieties of plastic products fade due to poor weather resistance, and customers complain that choosing good color masterbatches has become the first choice of merchants.

2. Heat resistance: the melt temperature of Color Masterbatch during injection molding is relatively high, and it stays in the high-temperature material sheet for a long time, which requires that the colorant used must have high heat resistance to resist the damage of high temperature.

3. Dispersion: the basic requirements for the appearance of sports field seat products are bright colors, high gloss and no color spots. For gloss, in addition to the factors of the mold itself, the dispersion degree of solid substances such as pigments contained in the masterbatch formula is also an important factor. The screw of injection molding machine is short, and the dispersion of pigment particles is very limited

4. Mobility: once the seats in the stadium are moved, they will pollute the clothes of the audience and have a very bad impact. Similar to stadium seats, more and more plastic products are currently used outdoors, such as steel cable sheaths of bridges, building materials, advertising boxes, turnover boxes, automobile plastic parts, etc. you can refer to the above ten points, draw inferences from one instance, and choose color masterbatch pigments and formula design for outdoor products.