Paper Machine Dryer Fabric Functions and Maintenance

Classification and Overview of Paper Machine Dryer Fabric

In the vast and complex industry of paper making, the drying section is an important part, and the dryer fabric is the core component of the drying section. Along with press felt and forming fabric, they are classified as paper machine clothing and constitute a critical consumable. Their performance and cleanliness directly impact paper quality, production efficiency, and the overall stability of the paper making process. With the continuous development of the paper making industry, the demand for dryer fabric has become increasingly prominent. Sun Hong’s dryer fabric can be divided into: flat yarn dryer fabric, round yarn dryer fabric and spiral dryer fabric.

The Role of Dryer Fabric in the Paper Machine Drying Section

The main function of the paper machine drying section is to reduce the moisture content of paper by evaporating water so that the paper reaches the specified dryness. The dryer fabric 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 fabric 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 fabric 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 mesh. Over time, the accumulation of these fiber scraps will clog the pores of the wire mesh, reduce the air permeability of the dryer fabric, 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 mesh. Oil stains not only affect the appearance quality of the paper, but also reduce the hydrophilicity of the dryer mesh, so that water cannot effectively pass through the mesh, 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 fabric, further reduce its performance, increasing production costs and maintenance difficulties.

How to Effectively Maintain and Clean the Dryer Fabric?

Regular dryer fabric maintenance is essential to keep the paper machine running efficiently and stably. Next, Sun Hong will provide you with some maintenance plans and cleaning methods:

• Daily inspections of the dryer fabric should not be neglected to check for damage, fuzzing, edge wear, and debris accumulation.
• Ensure that the tension of the dryer fabric is moderate to avoid damage or wrinkling caused by excessive tightness or looseness.
• When washing the dryer fabric, 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 mesh.
• Dryer fabric cleaners can be used as chemical agents specifically used to protect the surface of the mesh in the drying section of the paper machine. This type of cleaning agent effectively forms a protective film on the surface of the dryer fabric, thereby preventing contamination by impurities while maintaining the mesh’s excellent air permeability and surface properties.
• When the dryer fabric is perforated, loses tension, or the heat conduction efficiency decreases, it should be replaced in time.