How is the paper tray filled in the production process? The main material of the paper holder is paper, but only paper can not be made into a paper holder. During the production process of the paper holder, when it is necessary to add fillers, it is extremely important to control the content of the fillers during the process of adding fillers, because the fillers are very important to the paper holder. The strength and sizing performance have a great influence, and the content is inconsistent, which means that the amount of filler added to the slurry is inconsistent, and a paper tray with stable quality cannot be obtained. The density of the filler is high, and the distribution in the water is not easy to be uniform. Therefore, the filler tank must be equipped with a stirrer, preferably with a circulating pump. As long as there is filler in the tank, the stirring cannot be stopped.
There are two ways to add fillers: gap and continuous. The way to add people in the gap is to directly mix the solid filler with water and add it to the slurry. The position of adding people can be in the pulping tank or in the high-level tank, depending on the retention system used, or the type of sizing agent used. This operation is simple and easy, but once a problem is found, there is a certain loss in making adjustments. The continuous addition method is to pour the filler into the preparation equipment with a metering scale according to the required amount, and keep stirring in it, so that the content of the filler suspension in the preparation equipment is kept consistent up and down. The advantage of this method is that if problems are found, they can be adjusted in time to reduce losses, but the operation is troublesome, and the filler inlet and outlet of the modulation equipment are easily worn.
