Insufficient washing water pressure of industrial filter cloth causes different degrees of adhesion on the left and right sides of filter cloth, resulting in unequal pulling force on both sides; The friction force of the deviation correction roller is reduced because of the smaller circumference or smooth surface, and the deviation correction failure is also a common phenomenon that causes the deviation of the filter cloth;

The filter cloth can not reach the level when cutting, resulting in the unequal length between the left and right sides of the filter cloth, which leads to the deviation of the filter cloth in operation; The inner membrane of the deviation correction cylinder is damaged, which leads to abnormal inlet and outlet air pressure of the deviation correction cylinder, unbalanced power of the deviation correction roller, resulting in the phenomenon of filter cloth edge deviation and shortening the service life of the filter cloth; The positioning wheel of the filter cloth failed to reach the level during installation, which caused the uneven stress on both sides of the filter cloth to lead to the deviation of the filter cloth. 1. Material properties of polypropylene filter cloth: acid resistance, alkali resistance, good abrasion resistance, good conductivity, better recovery than polyester, and poor corrosion resistance. Heat resistance: slight shrinkage at 90℃. Elongation at break (%): 18-35. Breaking strength (g/d): 4. 5-9。 Softening point (℃): 140-160. Melting point (℃): 165-173. Specific weight: o. 9l。

2. Polypropylene filter cloth Filter cloth classification: polypropylene staple fiber filter cloth; Polypropylene long fiber filter cloth.

3. Filtration performance of polypropylene filter cloth: polypropylene short fiber, short fiber, spun yarn with wool; Long polypropylene fiber, long fiber. The formed yarn is smooth, so the industrial cloth made of polypropylene staple fiber has fur on the cloth surface. Both powder filtration and pressure filtration are better than long fiber. However, the industrial cloth made of polypropylene long fibers has smooth surface and good air permeability.

4. Use of polypropylene filter cloth: chemical industry, ceramics, smelting, manufacturing and mineral processing as filter bottom