The ambient temperature polyester needle punch felt filter bag is a kind of widely used filter material, which is a non-woven needle punching process. The polyester staple fiber carded and laid nets are needled into the felt after the fibers are staggered and the gaps are distributed on the fine fiber cloth. . This filter has high strength, good elastic recovery performance, stable fabric size, good abrasion resistance, high voidage, good air permeability, long service life, good dust removal effect, normal temperature (below 130°C, good mechanical properties and Acid and alkali resistance: Due to the low price of polyester, polyester needle felt is the most cost-effective filter medium at low temperatures.
This kind of polyester needle punch felt filter bag is often mixed with antistatic fiber, singeing, calendering, water repellent and oil repellent impregnation according to the dust characteristics of different manufacturers. The polyester needle felt felt produced has increased its original performance. Easy cleaning (fast dust stripping), water repellent and oil repellent (anti-condensation), antistatic properties, forming a series of products.
Dust filter bag processing should pay attention to:
After the dust bag is used, if the clogging of the cloth hole due to the dregs makes the cloth body hard to affect the filtration speed, acetone, oxalic acid, toluene, caustic soda, alcohol and other solutions may be soaked according to various fiber properties.
1. When cutting, it is best to scald with electric iron (with 1500W electric iron) to prevent the latitude and longitude line from loosening. The sewing thread must use the same line of performance.
2. The dust bag polyester, polypropylene and vinylon are identified by relevant health departments and used in food, pharmaceutical and other industries without side effects on human health.
3, food, pharmaceutical industry before using the dust bag rinse with warm water, so as to avoid cloth dirt into.
4, can produce special specifications of the product. If the fabric width can be increased or decreased, the size of the dust bag can be arbitrarily selected, but please inform the first half to 1 month so that the product can be planned for production.
5, after the use of dust bag, if due to clogging the fabric hole, so that fabric hardened affect the filter speed, according to a variety of fiber properties of acetone, oxalic acid, toluene, caustic soda, alcohol and other solutions soaked, cleaned, and then use.
Some matters in the production process of filter media:
1. After the water distribution system is installed, all debris in the filter tank shall be removed first, and the water distribution holes and water distribution gaps shall be cleared. Then, the backwashing method shall be used to check whether the water distribution system meets the design requirements.
2. On the inner wall of the filter tank, bearing the height of the top layer of the supporting material and the filter material as the pavement height mark.
3, carefully check the different range of supporting materials according to their size range from the largest to the smallest in order to prepare for the pavement.
4. The lowest layer of filter material in the pavement should avoid the water distribution system with the filter tank.
5. The thickness of each support layer should be exactly and evenly wiped with a squeegee or a screed to make it near the horizontal. The height should be consistent with the paving height marking horizontal line.
6, stainless steel and galvanized steel ring argon arc welding technology. The diameter error is only less than 0.5mm, and the horizontal error is less than 0.2mm. The filter bag made of this steel ring installed in the equipment can increase the sealing degree and reduce the occurrence of side leakage.
7. The production of high-speed industrial sewing machines without silicone oil cooling will not produce silicone oil pollution.
8, the dust filter bag mouth suture improved without high projections resulting in side leakage without pinholes and lead to side leakage.
9. The labels on the filter bags marked with the product specifications and models are all selected to be easily removed to prevent contamination of the filtrates by the labels and inks of the filter bags during use.
10. The filtration accuracy ranges from 0.5 micron to 300 micron. The material is divided into polyester, polypropylene nylon and other filter bags.
