The sandpaper manufacturer stated that the label of the commonly used sandpaper is consistent with the number of meshes, that is, the larger the label of the sandpaper, the greater the number of meshes, and the finer the sandpaper; the smaller the label, the smaller the number of meshes, and the finer the sandpaper. The general sandpaper label is 30, and the fine is 30 mesh. No. 60, the fineness is 60 mesh. The label is No. 400, and the fineness is 400 mesh.
Sandpaper manufacturers say that the label of the sandpaper is the model number.
Mesh: refers to the thickness of the abrasive and the number of abrasives per square inch. There are 256 eyes per square inch, and each eye is called an eye.
Sandpaper manufacturers explain the difference between fine sandpaper and coarse sandpaper:
Sandpaper is divided into thicknesses, which are mainly divided by different models. The model number of coarse sandpaper is relatively small, and the model number of fine sandpaper is relatively large. The sandpaper manufacturer added that the difference between fine sandpaper and coarse sandpaper There are the following two points :
1. The friction force is different. The friction force of the sandpaper depends on the number of holes in the screen. The number of holes in the coarse sandpaper is small, and the friction force is large; the friction force of the fine sandpaper is relatively small.
2. Different uses. Coarse sandpaper is generally used for rough machining to remove thicker polishing layers; coarse sandpaper has a higher polishing efficiency and is mainly responsible for precision polishing.
The above is what the sandpaper manufacturer explained.