The surface of the wet pressed paper trays of the paper tray manufacturers is more smooth and smooth, and the quality is obviously outstanding. At present, it has received many products' favor. The paper tray manufacturers will share with you the common problems and solutions of the wet pressed paper tray process!
Hot pressing net fracturing:
In the process of hot pressing, the omentum is often ruptured. If a fracturing net is attached to the mold, and then the product is put on the product for hot pressing, the pressed paper support product will leave a trace, which will affect Exterior. The solution is to change to a softer net, and manually pour the net into the shape of the product on the mold before pressing the net. If the intact omentum cannot be pressed, the crack in the net can be repaired with a spot welding machine!
Surface printing on paper tray:
There are stripes on the surface of wet pressed paper support products after hot pressing. These lines are mainly caused by uneven slurry absorption of the molding die. The solution is to use a smaller drill bit for drilling or increase the hot pressing. Machine pressure, which can effectively improve the line phenomenon. If feasible, you can also add a few more layers of mesh to the forming mold, so that the vacuum force at the punching area can be well dispersed!
Product black:
Paper support black pressing is a very common problem, mainly because the smaller part of the product structure is easy to sludge during molding, so the thickness is larger than other parts, and it is pressed too tightly and blacked during hot pressing. It may also be caused by too much pressure of the hot press itself and too long hot pressing time. In view of the above situation, it is only necessary to use a file or to remove the mold corresponding to the black spot on the machine tool. In the other case, it is necessary to adjust the pressure and time of the hot press at the same time to make the machine reach a balance point.