How to Clean Paper Making Dryer Fabrics

In the vast and complex industry of paper making, the drying section is an important part, and the dryer fabrics are the core component of the drying section. Its performance and cleanliness directly affect paper quality, production efficiency and the stability of the entire papermaking process. With the continuous development of the paper making industry, the demand for dryer fabrics has become increasingly prominent. Sun Hong’s dryer fabrics series can be divided into: flat yarn dryer fabrics, round yarn dryer fabrics and spiral dryer fabrics.

The role of dryer fabrics in the drying section:
The main function of the papermaking drying section is to reduce the moisture content of paper by evaporating water so that the paper reaches the specified dryness. The dryer fabrics undertakes the important task of supporting and transmitting paper in this process. It needs to have good air permeability, strength and stability to ensure that the paper can be evenly heated and dried during the drying process to avoid quality problems such as deformation and cracking of the paper. At the same time, the good performance of the dryer fabrics also plays an important role in maintaining the stable operation of the drying section, reducing downtime and improving production efficiency.

In the paper making process, the dryer fabrics of the drying section will be invaded by a variety of pollutants. The first is fiber scraps. During the forming and transmission process of the paper, some fibers will fall off and adhere to the dryer fabrics. Over time, the accumulation of these fiber scraps will clog the pores of the dryer fabrics, reduce the air permeability of the dryer fabrics, and affect the drying efficiency. The second is oil stains. Oil stains from the lubrication system and transmission parts of the paper making equipment may be contaminated on the dryer fabrics. Oil stains not only affect the appearance quality of the paper, but also reduce the hydrophilicity of the dryer fabrics, so that water cannot effectively pass through the dryer fabrics, resulting in uneven drying.
In addition, there are pollutants such as adhesives, inks, and chemical additive residues. These substances will form stubborn stains on the dryer fabrics, further deteriorating the performance of the dryer fabrics, increasing production costs and maintenance difficulties.

How to effectively maintain and clean the dryer fabrics?
Regular dryer fabrics maintenance is essential to keep the paper machine running efficiently and stably. Below, Sun Hong will explain some dryer fabrics maintenance and cleaning methods:
(1) Daily inspections of the dryer fabrics should not be neglected to check for damage, fuzzing, edge wear, and debris accumulation.
(2) Ensure that the tension of the dryer fabrics is moderate to avoid damage or wrinkling caused by excessive tightness or looseness.
(3) When washing the dryer fabrics, a fan-shaped nozzle or a rotating nozzle can be used to wash and remove impurities such as pulp and fillers attached to the surface of the dryer fabrics.
(4) Dryer fabrics cleaners can be used as chemical agents specifically used to protect the surface of the dryer fabrics in the drying section of the paper machine. They can effectively form a protective layer on the surface of the dryer fabrics, isolate the contamination of the dryer fabrics by impurities, and maintain the permeability and surface properties of the dryer fabrics.
(5) When the dryer fabrics is perforated, loses tension, or the heat conduction efficiency decreases, it should be replaced in time.