I. Appearance identification method:
1. Feel should be silky smooth, loose and floating. Feel rough, heavy hand, feel heavy. Grasp a powder in the hand, the more smooth powder Peng loose, good quality, on the contrary, powder rough feels heavy, poor quality. Not easy to spray, secondary powder, waste.
2. The larger the volume, the less powder coating filling material, the higher the cost. The better the powder quality.
The smaller the volume, the higher the powder coating filling material, the lower the cost. The WORSE THE QUALITY OF THE POWDER. The same carton, see that the powder volume is large, it is good powder, the volume of that home is small, it is poor powder.
Not easy to spray, secondary powder, waste, spray area less, high cost.
3. Good storage time powder can be stored for a long time, powder levels and other effects unchanged. Poor powder can not be stored for a long time, poor powder after 3 months of leveling and other effects become poor. The shelf life of normal powder at room temperature is 12 months. The quality of products with low-end raw materials is unstable and easy to deteriorate.
Using poor raw materials to produce powder, spraying surface will accelerate the powder, aging after half a year. In addition, powder is not easy to store, resulting in a large waste of powder to customers, and a large fee.
Two. Spraying area identification method:
Spray area of normal powder resin content should be 55-65%, resin is about 20 yuan/KG, filling material is about 2 yuan.
Some powder coating powder manufacturer use resin content of less than 45% to make them better, and increase fillers to reduce costs and reduce spraying area.
Comparison method: two of the same powder spray the same product, see that a powder spray products more, that a spray products less, spray products less is bad, high cost. For the use of manufacturers, spraying area is less, the use of cost is high. According to the powder spraying 6 square per kilogram to calculate, each less spraying a square, equivalent to the manufacturer per kilogram powder to pay 3-6 yuan, it is recommended to use the manufacturer with authentic powder, carefully calculate their actual use cost.
I found the URL on a small website.