Find Filter Bag, Polyester Filter Bags, Dust Filter Bag on Industry Directory, Reliable Manufacturer/Supplier/Factory from China.

Inquiry Basket (0)
Glass fiber PTFE dipping and membrane treatment filter bag
Home > Products > Filter Bag > Special Filter Bag > Glass fiber PTFE dipping and membrane treatment filter bag

Glass fiber PTFE dipping and membrane treatment filter bag

Product Description



Product Description






Filter Bag is the core of the dust filter components. The filter bag has the strict requirements on design, filter material cutting, woven technology etc. These requirements are very important for the normal operation of the bag filter and convenient maintenance, and it is great significance to enlong the service life of the filter bag.


Structure and application

Filter bag are composed by woven filter material bag body and supported in role, snap ring, clamp, chain hoist, etc. The rest of the filter bag Dust Collector and its accessories are the venturi tube, frame, mouth of elastic ring, etc.




The diameter of the filter bag is 115-200mm, length is 2000 - 9000mm, the specifications of the commonly used filter bag is 120 - 160 mm diameter,  2000 ~ 6000mm length.


Filter bag processing need attention


Filter bag processing matters that should be paid attention: 
After the selection of filter bag material and determine the specifications of the filter bag, we will process the filter bag as following attention matters:

(1) Precise design required size of the filter cloth for filter bag parts, the filter cloth will larger than the actual amount design size, to leave a spare for weaving.

(2) To choose the right filter bag accessories, specifications and check its quality. The filter bag accessories should match the filter bag quality requirements.


(3) We make the filter bag line drawing, cutting, sewing on automatic production line. When the filter bag need manual processing, we will open it on the operation platform, and with certain pulling force to keep it is flat.

(4) We keep the strict processing quality standards, according to design drawings and operation process. Our worker meet the requirements of tooling and clothing shoes and hats, no smoking.


(5) We have the responsible for the processing of products, and examines, waste, residue, defective goods in the beginning.
Product Description




When the dust gas through the filter bag. The dust will be block on the filter bag surface. The clean gas will pass away. So we can say that,The filter bag is the core of the dust filter. Or, you can consider it as the lung in our body.




The filter bag has the strict requirements on design, filter material cutting, woven technology etc. These requirements are very important for the filtration operation, maintenance and even the service life of the bag filter.


Please see our  picture poster as following:



Business Operation




The diameter of the filter bag should around 115 mm diameter to 200mm diameter.  The filter bag length should 2000 - 9000mm, the specifications of the commonly used filter bag is 125 - 170 mm diameter,  2000 ~ 6000mm length.


The oval, flat, envelope and support ring types of filter bag, please be sure to enquiry for us with detailed information. 



First of all, we need to confirm the detailed size of filter bag with our customer. After received your confirmation or agreement, we should begin for processing. If the drawing can not clearly or need filter bag sample to trail installment, we should provide the confirmed size filter bag sample before the purchase order processing. 
After then, we should begin to processing. We will make the Filter Fabric first. After then, we will sewing the Filter fabric into the filter bag. For more detailed information, please reference the above processing picture. 
When we finish the manufacture, the filter bag should begin to rechecking. As you know, even if one filter bag broken. It will be the 100% result for the dust filter equipment bad working. So, it is our the most important step for all. We must assure it can work correctly 100%. Not 99.9 or 99.99%. We must assure it 100% correctly. We must assure it 100% corrctly!. The important things three times....
Working Occasion


Please see the following working circumstance. The filter bag is often used in dust filter equipment and replace the filter bag in dust filter equipment. So, please reference the dust filter (dust collector) working occasion. Please be sure to inquiry us by following e-mail table directly. Hope that we can give you more professional suggestion for reference.




Filter bag material Working temperature Chemical properties Application 1   Application 2
Polypropylene needle felt up to 90 degree Good for Acid and Alkali gas Grain High chemical gas and less temperature
Polyester needle felt Up to 130 degree Good for Acid and nomal for Alkali Every Dust Collection Temperature lower than 130 degree
Acrylic needle felt Up to 130 degree Good for Acid and Alkali gas Every Dust Collection Chemical stronger than polyester suitalbe
Nomex needle felt UP to 200 degree Good for Acid and nomal for Alkali Asphalt Cement dust
PPS (Polyphenylene Sulphide) Needle felt Up to 190 degree Good for Acid and Alkali gas. Bad for Oxygen Coal fired dust gas Sulphur
P84 (Polyimide) Needle felt  Up to 240 degree Good for Acid and Alkali gas Incineration Temperature lower than 240 degree
PTFE (Polytetrafluoroethylene) needle felt Up to 260 degree Good for Acid and Alkali gas Mixed Chemical gas Temperature lower than 260 degree
Glass fiber woven bulk yarn Up to 280 degree Good for Acid and Alkali gas Cement kiln Coal fired dust gas
Glass fiber mixed needle felt  Up to 280 degree Nomal for Acid and Alkali gas Acid gas Temperature lower than 280 degree


Our Services


1. Enquiries quickly reply within 24 hours.


2. After-sales service, rapid response, the engineer installation guide. The feedback problems will be replied within 24 hours. We can arrange professional engineers arrived at equipment location within 48 working hours for problem solved.


3. The dust collector design according to the specific condition of dust removal technology. The wind network project design for all system. To be the optimal structure design.


4. The lowest equipment price whole network in alibaba  Welcome to rate of the price. If our price is higher, we will return twice of our quoted price difference to you. Please prompt before sign the contract with us. Due to our good faith principle. 


5. The bag filter equipment over 20 years working life.


6. Associated with equipment spare parts, ensure the replacement parts within 20 years.


7. If accessories stop production or update, to ensure that the replacement parts can be normal use, and keep noticed one year before the spare parts stop production.


8. Ensure easy operation and absolutely no worries about future


Company Information


CNP Co., Ltd. was founded in 2008, specializes in the field of air pollution control and bag filters. Including engineering design, planning, consulting, equipment research and development, manufacturing, sales, installation and commissioning, as well as production and services.


Based on the high starting point, CNP Co., Ltd., with a positive and upward pioneering spirit, will further create brilliancy as to technological innovation, intellectual property rights and independent brand strategy.




Contact us if you need more details on Membrane Treatment Filter Bag. We are ready to answer your questions on packaging, logistics, certification or any other aspects about PTFE Dipping Filter Bag、Glass Fiber Filter Bag. If these products fail to match your need, please contact us and we would like to provide relevant information.

Product Categories : Filter Bag > Special Filter Bag