What is liquid filter bag

As a filter element, liquid filter bag is an important part of the filtration process. The effect of filtration is depended on the quality of the liquid filter bag in a great part. Undoubtedly, liquid filter bag is the heart of the filter. Many material can made liquid filter bag, such as, nylon, polyester, polypropylene, etc.. The filtration accuracy ranges from 1 microns to 200 microns. Generally, the size can be divided into 5 type: 1#-5#.

Liquid filter bags are made by two kinds of joint technology, heat-seal technology and sewing technology. Heat-seal technology can ensure that the filter bags have the best bonding strength to prevent leakage. And the sewing technology can make the liquid filter bag sturdy and durable. It maximizes the sealing effect of the seam joint. The pure sewing thread contains no lubricant components such as silicone oil, avoiding the secondary pollution problem that exists in ordinary sewing filter bags.

The liquid filter bag ring can be made of stainless steel, PP or PE plastic. It includes various bottom and top designs. The liquid filter bag's liquid outlet surface is specially singed to effectively prevent fiber detachment and contamination of the filtrate, and avoid excessive clogging of the filter holes caused by traditional roller pressing, which shortens the service life of the filter bag.

Liquid filter bags’ extensive usage is own to its excellent performance in acid and alkali resistant, high-temperature resistant, and corrosion-resistant. All raw materials are natural white and have not undergone any special bleaching or dyeing treatment, fully meeting environmental protection standards. Due to the three-dimensional filtration layer of the needle felt, when the liquid flows through the filter bag, particles will be retained on the inner wall surface and deep layer of the liquid filter bag due to the deep filtration mechanism, and it has a high capture efficiency for solid or colloidal particles.

The uniform thickness of the needle felt, stable porosity and sufficient strength ensure the stability of the filter bag's efficiency and longer service life. The five-thread double-needle sewing is the most secure, ensuring that each liquid filter bag can provide the best filtration guarantee. It has a wide range of applications and is suitable for liquid filtration in various industries.

Different filter bags are suitable for various application scenarios and requirements due to their unique materials and structural designs. Filter bags can be used for liquid filtration in fields such as water treatment, chemical engineering, and pharmaceuticals. The filter bag can filter out tiny particles with a diameter of over 1 micron, such as suspended solids, bacteria, viruses, etc., ensuring the purity and safety of the liquid. That is also the most common usage of liquid filter bag.

Liquid filter bags are widely used in the automotive manufacturing industry, covering multiple processes such as electroscopic paint filtration, ultra-filtration protection filtration, spray water filtration, and filtration of gloss and topcoat. At the same time, they are also used for the filtration of automotive pre-treatment, topcoat, clear coat, primer, paint ring line, as well as parts cleaning fluid, drawing lubricant, metalworking fluid and pump suction inlet filter, ensuring the purity and efficiency of liquids in the automotive manufacturing process.

Food grade liquid filter bag also can be used in food processing industry, such as wine-making, dairy products, drink etc.. Filter bag can help filter the tiny impurities and particles to ensure the quality and safety in the food processing process. It also widely used in the medical and health field, such as operating rooms, clean rooms, laboratories, etc. Filter bags can filter out tiny particles and bacteria, ensuring the hygiene and safety of the medical environment.

Liquid filter bag can be reusable. That also makes it more economical and practical. You just need to wash it and it can be used again.  How to clean the liquid filter bag? First, remove the filter bag, gently shake it, pour out the dust and foreign objects inside. Then soak it in drinking water for no more than 20 minutes. Third, take it out, rinse it with drinking water and gently pat it to wash until the cleaning water is clear. After drying flat in the clean area, carefully inspect the filter bags. But If there is any any damage to the filter bag , you need to replace it in time.

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