During use, blankets will gradually become clogged and dirty with small fibers, fillers, resins, etc; Sediments generated by some chemical reactions can also dirty the blanket. The dirty blanket greatly reduces the efficiency of pressing and dewatering, and finally needs to be replaced. The reason for replacing pressed blankets is generally not necessarily due to mechanical wear, but rather due to dirty and clogged blankets. Therefore, it is very important to install a blanket washing device on the press to maintain the dewatering efficiency of the press and extend the service life of the blanket.

Cleaning principle: Use high-pressure or low-pressure spray water to loosen and flush away small fibers, fillers, etc. in the fabric structure, and then use a vacuum suction tank to remove the loose fillers, as shown in the figure above:

The typical complete layout of the blanket spray cleaning in the pressing section is shown in the figure on the right:

For bottom web papermaking blankets, the most basic washing system should also include three basic devices: a high-pressure water spray pipe, a low-pressure water spray pipe, and a blanket vacuum suction tank.

The cleaning and washing of papermaking blankets is a complex issue that depends on the type of paper, pulp ratio, blanket structure, and other operating conditions. In addition to water pressure, attention should also be paid to the form of the spray pipe, the swinging speed of the high-pressure moving spray pipe, the nozzle spacing, the distance between the nozzle and the blanket, and the size of the spray volume. For pollutants that can only be removed by chemical methods, accurate advice should be obtained from experts proficient in this field.