PTFE needle-punched felt bags feature a smooth surface and excellent chemical resistance. When laminated onto the surface of common filter materials, they trap dust particles on the membrane's surface, achieving surface filtration. They offer good chemical stability, are hydrophobic, and enhance the lifespan of the filter bags.

Coated filter media refers to a type of filter material made by bonding a PTFE microporous film with different base cloths using a specific process. Abbreviated as coated filter media, it boasts excellent chemical stability, a smooth surface for easy ash removal, good air permeability, and superior anti-dew condensation properties. PTFE-coated polyester needle-punched felt bags are particularly effective for dusty gases, high humidity dusty gases, highly adhesive dust, and environments with high purification requirements. Using coated filter media allows for surface filtration, preventing dust from penetrating the fabric (filter material) and eliminating clogging issues in the bags. The filtration efficiency can reach nearly zero emissions. PTFE-coated polyester needle-punched felt bags have low operating resistance, high filtration air velocity, wide application range, low operation costs, and a service life of over three years.

PTFE needle-punched felt bags are widely used in industries with harsh working conditions such as steel, cement, electricity, non-ferrous metal smelting, various waste incineration (domestic waste, industrial waste, straw), iron alloy, chemicals, and more for flue gas purification and material recovery, with excellent results.

PTFE needle-punched felt bags are primarily used in chemical industries, waste incineration, and liquid filtration, maintaining excellent chemical stability under various complex operating conditions. However, due to their high cost, they are not suitable for widespread use.

PTFE needle-punched felt bags are a composite filter material with polytetrafluoroethylene pores as small as 5 micrometers, applied to the surface of needle-punched filter felts.

PTFE needle-punched felt bag features: The smooth surface and chemical resistance of the PTFE film, when laminated onto the surface of common filter materials, act as a disposable dust layer, trapping all dust on the film's surface for surface filtration. Moreover, due to the film's smoothness and excellent chemical stability, it does not age and is hydrophobic, making it easy for the trapped dust to be shed, thereby extending the service life of the filter material. Compared to common filter materials, its advantages include:

1. Film pore size ranges between 0.23 um, featuring high filtration rate and nearly zero emissions. Post-cleaning, the porosity remains unchanged, and the dust removal rate is still quite satisfactory.

2. During initial use, the pressure loss of the laminated filter media is higher than that of regular filter media, but once in operation, the pressure loss changes very little with the increase in usage time, whereas the pressure loss of regular filter media increases significantly over time.

3. Standard filter media allows dust to easily penetrate and accumulate inside, eventually clogging the pores and rendering it unusable. In contrast, polytetrafluoroethylene (PTFE) coated filter media allows dust to be easily cleaned from the film surface, providing excellent dust removal and a long service cycle. It operates at lower cleaning pressure, thereby extending the filter media's lifespan and significantly reducing maintenance work for dust collectors, lowering operational costs. When combined with woven filter media and needle-punched felt, PTFE coated filter media is widely used in flue gas purification and dust control, as well as for special recovery applications.

4. The laminated filter material also features good chemical stability, heat resistance, and chemical resistance.

PTFE needle-punched felt dust collector bags, after being treated with a special process, significantly improve the filtration accuracy, surface smoothness, stable alkaline performance, tensile strength, and durability of the filter material. The PTFE (polytetrafluoroethylene) film is smooth and chemically resistant, acting as a one-time dust layer when laminated onto the surface of common filter materials. It traps dust on the film's surface, achieving surface filtration. Additionally, due to the film's smoothness, good chemical stability, non-aging properties, and hydrophobic nature, dust trapped on the surface is easily shed, thereby extending the lifespan of the filter material.

The material of the PTFE needle felt dust collector bag is a blend of 50% PPS and 50% PTFE, which is a fiber with extremely stable chemical properties. Its features include:

Continuous working temperature above 250 degrees Celsius, instantaneous temperature up to 280 degrees Celsius.

2. Resistant to acids, alkalis, and oxidation; almost non-flammable.

3. Non-aging fibers.

4. Adaptable to harsh operating conditions, it boasts a decent service life, typically exceeding 4 years.

PTFE needle felt dust collector bag characteristics:

PTFE needle-punched felt dust collector bags refer to a product made by bonding PTFE microporous film with a special process and a different filter material base fabric.

2. Surface Filtration

3. Excellent chemical stability; does not age.

4. Smooth surface, good peel strength, easy to clean dust.

5. Good breathability.

6. Excellent anti-dewing property, hydrophobic.

7. Decent filtration rate.

8. Low operating resistance, good filtration air velocity.

9. Wide range of application, relatively low operation costs.