Grinding concentration refers to the weight of the ore (dry weight) in the grinder as a percentage of the weight of the whole pulp (ore + water). The grinding concentration mainly affects the friction between the grinding medium and the material, the effective weight of the medium (the absolute weight of the medium minus the buoyancy of the slurry), the fluidity of the slurry and the transportation capacity of the mill, thus affecting the productivity of the mill. . The grinding concentration should have a suitable range, which is not good when it is too large or too small. When the grinding concentration is low, the effective specific gravity of the medium increases in the pulp, so the impact force and the grinding force are strong when the medium falls, but the ore particles adhering around the medium are less, and the efficiency of the grinding of the ore particles is reduced; There is a certain grading effect inside, coarse ore is not easy to discharge, and excessive smashing is serious. If the grinding concentration is too low, the slurry flow rate is too fast, the grinding time is short, the running is coarse in the discharge, and the grinding efficiency and productivity are low. When the grinding concentration increases, the effective specific gravity of the medium decreases, but the viscosity of the slurry increases, the ore particles adhered around the medium increase, the grinding efficiency increases, the fluidity of the slurry is poor, the flow rate is slow, and the impact of the grinding medium is weakened. For an overflow ball mill , the particle size of the discharged product may become coarser, while the lattice type ball mill may cause a "blowing" phenomenon, thereby reducing the productivity of the mill. The most suitable grinding concentration should be determined by the nature of the material to be ground, the grinding process conditions and the classification efficiency and the overflow concentration. Generally, high concentration grinding and low concentration classification are advocated. For grinding machines operating at medium speeds, coarse grinding (product size is
The main function of the edge banding is to seal the cross-section of the board, so as to avoid the damage of the board and the adverse factors (mainly moisture) in the process of use and prevent the formaldehyde inside the board from volatilizing, and at the same time achieve the effect of beautiful decoration.
The product has the following main features: smooth surface, no blistering, no ribbing, moderate gloss, smooth surface and back surface, uniform thickness, uniform width, reasonable hardness, high elasticity, good quality, strong wear resistance, trimmed and sealed The color of the side and the side is close to the surface color, not whitish, good gloss, and the overall color of the finished furniture is coordinated.
Judge good or bad PVC Edge Banding For Cabinet,Pvc Edge Banding,Banding For Cabinet,T Shape Pvc Edge Banding For Kitchen Cabinet Henan Shunbang Chemical Industry CO.,Ltd , https://www.sbcpe.com
1. Look at the hue and surface roughness of the edge banding strip. The color of the surface of a good edge banding strip is also very important. Whether the color is close to the customized product and is gorgeous. If the surface is very rough and there are pull marks, the quality is definitely not much better. This is the surface quality of the edge banding strip. It has nothing to do with the quality of the inner material of the edge banding, mainly the production process of the edge banding factory and the production technical skills of the employees. A good edge banding strip is: the surface must be smooth, no blistering or seldom bubbling, no drawing or few drawing, moderate gloss, not too shiny or too matte (unless there are special requirements).
2. Check the flatness of the surface and bottom of the edge banding and whether the thickness is uniform, otherwise it will cause the joint between the edge band and the board, the glue line is too eye-catching or the gap between the board and the edge band is too large, which will affect the overall beauty. Details determine success or failure, and often a small detail problem may bring an embarrassing situation where the overall effect is not good.
3. Whether the edge trimming is whitish, whether the surface of the bent edge strip is severely whitish, and whether the ground color of the trimming strip is close to the surface color of the board in question. PVC Edge Banding strips are mainly made of PVC and Calcium Carbonate plus additives. If the calcium carbonate content is too high, whitening of the edge banding and bending will occur, which proves that the quality of such products is not good.
4. Whether the strength is okay and whether there is elasticity. High strength means good wear resistance, and the corresponding quality is better. Too high strength also means increased processing difficulty. Low elasticity means low wear resistance and low aging resistance. In addition, according to actual production needs, manual trimming is generally required, and soft spots can be made appropriately, and the automatic edge banding machine can make hard points appropriately.
5. Whether the adhesive is applied evenly and whether it is easy to fall off during use.
6. Smell whether the PVC edge banding strips taste or not. Products produced with good quality raw materials generally have a small taste. If the taste is too large, it means that the quality of the raw materials used in production is relatively poor.