Polyester Filter Bags

Description of Polyester filter bags

Polyester filter bags are one of the most widely used filter bags in industrial dust collection applications. They are constructed using high-quality polyester fabric, which provides robustness and dimensional stability. As a filtration media, polyester has the following characteristics:

● Filtration Efficiency —— The tight polyester fabric structure traps even the smallest particles, ensuring a high level of filtration efficiency. This makes polyester filter bags particularly effective in removing fine particles and dust from dust-laden gas.

● Excellent Tensile Strength and Abrasion Resistance —— This allows them to withstand high-flow rates and pressure differentials without tearing or disintegrating.

● Excellent Mechanical & Dimensional Stability —— Polyester filter bags are dimensionally stable and have low shrinkage properties. This ensures that they maintain their shape and size even under high-temperature conditions.

● Easy Cleaning —— Polyester filter bags can be easily cleaned and reused, reducing the need for frequent replacements and minimizing waste.

In addition to these filtration characteristics, polyester filter bags also offer a number of other advantages, such as:

● Long Service Life —— The durability of polyester filter bags results in longer service life, reducing the need for frequent bag replacements.

● Easy Maintenance —— Polyester filter bags are easy to clean and maintain, allowing for efficient and convenient filter bag cleaning processes with minimum maintenance costs.

● Versatility —— Polyester filter bags are available in various sizes, shapes, and configurations, making them suitable for a wide range of industrial filtration applications.

● Cost Effective —— Polyester filter bags are relatively affordable compared to other filter bag materials, making them a cost-effective choice for filtration applications.

Scrim-supported felt is used exclusively in the production of our polyester filter bags in order to improve filtration efficiency and extend the filter bag life.

Specification of Polyester Filter Bags

Post-treatment of Polyester Filter Bags

For polyester filter bags, we can treat it with different post-processing according to different working conditions. There are mainly the following post-processing treatments:

● ePTFE Membrane

Adding an ePTFE membrane to a polyester filter bag allows the membrane to act as the filter cake. Dust stays on the surface of the membrane and does not get entrained into the fibers of the filter bag, which lengthens the life of your filter bag. It also reduces wear and tear, lower maintenance costs, and energy costs due to easy dust cake release during the cleaning cycle.

● Hydro-Oleophobic Coating

This coating adds resistance to water and oils, and improves cake release.

● Static Resistant

Helps to ground the filter bag to eliminate sparks that might cause combustion explosions.

● Singe

Singeing is a finishing process where the surface of the filter media is exposed to a flame or hot gas to burn off the fine and straggly fibers in order to provide a uniform and smooth surface area, which improves dusk cake release, enhanced filtration efficiency, and better air permeability.

The singeing process typically involves passing the fabric over an open flame or through a heated chamber. The heat singes off the protruding fibers without damaging the main structure of the fabric. The process parameters, such as speed and temperature, are carefully controlled to achieve the desired level of smoothness and finish.

● Glazing

Glazing, also known as calendering, is the high-pressure pressing of the fabric by rollers to flatten or smooth the surface. Glazing pushes the surface fibers down onto the body of the filter media to increase and uniform surface life, improve stability, reduce shrinkage, and improve dust cake release.

Application of Polyester Filter Bags

1. Steel industry

The steel industry is one of the main application areas of polyester dust filter bags. In the process of steel production, a large amount of dust and smoke will be generated, which will not only pollute the environment, but also harm the health of workers. Polyester dust filter bags can effectively filter these dust and smoke to ensure the health of workers and the cleanliness of the production environment.

2. Cement industry

In the process of cement production, a large amount of dust and particulate matter will be generated, which will have adverse effects on the environment and the health of workers. Polyester dust filter bags have excellent filtering performance and wear resistance, and can effectively filter dust and particulate matter in the cement production process to ensure the cleanliness of the production environment and the health of workers.

3. Power industry

In the power industry, flue gas dust removal in coal-fired power plants is an important application area of polyester dust filter bags. The flue gas of coal-fired power plants contains a large amount of dust and particulate matter, which will have serious effects on the environment and human health. Polyester dust filter bags can effectively filter dust and particulate matter in the flue gas to ensure the cleanliness and environmental protection of flue gas emissions.

4. Chemical Industry

During the chemical production process, a large amount of dust and harmful gases will be generated, which will have adverse effects on the environment and the health of workers. Polyester dust filter bags have excellent chemical stability and filtering performance, and can effectively filter dust and harmful gases in the chemical production process to ensure the cleanliness of the production environment and the health of workers.

5. Food Industry

During the food production process, a large amount of dust and particulate matter will be generated, which will affect the quality of food and the health of workers. Polyester dust filter bags can effectively filter dust and particulate matter in the food production process to ensure the quality of food and the health of workers.

6. Other Industries

In addition to the above industries, polyester dust filter bags are also widely used in many other fields, such as waste incineration, metallurgy, ceramics, tobacco, etc. In these industries, polyester dust filter bags play an important role in filtering and cleaning, and escort the cleanliness of the production environment and the health of workers.

Polyester dust filter bags have a wide range of applications, not only in traditional industrial fields, but also in emerging fields such as new energy and new materials. With the continuous development of industrial technology and the continuous improvement of environmental protection requirements, the performance and application scope of polyester dust filter bags are also constantly expanding and improving.