PTFE HEPA/ULPA high-efficiency filters use polytetrafluoroethylene (PTFE) filter material to filter particles in the air through a membrane structure, and can be used in environments that require air cleanliness.

This series of products of Aili Industry can be configured with H13, H14, U15, U16, U17 and other filtration grades. The frame can be made of aluminum profiles and surface oxidation treated. The sealing method can choose EPDM gasket, liquid tank seal or integrated PU seal according to the installation structure.

Compared with traditional glass fiber filter media, PTFE filter media has better moisture resistance and adaptability to a variety of chemical media in terms of material properties. Therefore, it has certain application value in special air filtration applications such as electronic manufacturing, semiconductors, pharmaceuticals, and laboratories. The filtration efficiency and pressure drop of different PTFE filter materials will be affected by the membrane structure, filter material area, folding method and test conditions. The actual parameters should be based on the corresponding product testing data.

2. The structure of Aili Industrial PTFE HEPA/ULPA high efficiency/ultra high efficiency filter

3. What is PTFE filter material?

PTFE is the abbreviation of Polytetrafluoroethylene, a fluoropolymer material.

When used for air filtration, PTFE can be made into a microporous membrane structure to intercept particulate matter in the air through the micropores and filtration mechanism of the membrane material.

One of the characteristics of PTFE filter material is that the material itself has good moisture resistance and has certain tolerance to a variety of chemical media. Therefore, in addition to being used for conventional clean air filtration, PTFE high-efficiency filters can also be considered for use in air treatment scenarios that have certain requirements for humidity or chemical environments.

4. What is the difference between PTFE HEPA and PTFE ULPA?

The efficiency of HEPA and ULPA cannot be summarized by just 'how many microns are filtered'. Different testing standards and testing methods have different definitions of efficiency, particle size, and testing conditions. IEST-RP-CC007 provides relevant test methods for factory efficiency testing of HEPA and ULPA filters, and specifically mentions that for media with MPPS below 100nm (usually including ePTFE), the test evaluation needs to consider the corresponding test method and particle size range.

5. Product features of Aili Industrial PTFE high-efficiency/super-high-efficiency air filters

6. Product specifications of Aili Industrial PTFE high-efficiency/super-high-efficiency air filters

The size, efficiency, air volume, resistance and working conditions of the actual product should be subject to specific specifications or testing data.

7. Filtration principle of PTFE high-efficiency filter

The PTFE high-efficiency filter filters particles in the air through the microporous structure of the PTFE membrane material.

When air passes through the filter material, the particles are affected by a variety of filtration mechanisms, including interception, inertial collision and diffusion. For high-efficiency and ultra-high-efficiency filters, the most penetrating particle size (MPPS) and test conditions will affect the actual filtration efficiency. Therefore, it cannot be simply understood as 'the smaller the pore size, the higher the filtration efficiency must be.'

For PTFE/ePTFE membrane materials, because their filtration characteristics are different from traditional fiber filter materials, actual selection and performance evaluation need to be judged based on the corresponding product test conditions.

8. Which scenarios are suitable for Aili Industrial PTFE high-efficiency/super-high-efficiency air filters?

Aili Industrial PTFE HEPA/ULPA filters have corresponding application scenarios in clean environments such as semiconductors, pharmaceuticals, biotechnology, and electronic manufacturing. Specific product grades need to be selected based on actual cleanliness requirements and air treatment systems.

9. Application of Aili Industrial PTEF HEPA/ULPA filters in the semiconductor industry

Semiconductor manufacturing has high requirements for the control of particulate matter in the air. Clean room air treatment systems usually need to be equipped with high-efficiency or ultra-high-efficiency filters of corresponding levels.

PTFE ULPA filter can be used as a filtration unit in a clean air treatment system to perform high-efficiency particulate filtration of the air entering the clean area.

In actual projects, it needs to be based on:

Cleanliness level → Air supply volume → Filtration level → Filter size → Initial resistance → Installation structure → Sealing method

Determine filter size.

For scenarios where the installation size is limited, such as the internal space of semiconductor equipment, it is also necessary to consider the filter thickness, effective filtration area and system fan capacity.

10. Application of Aili Industrial PTFE HEPA/ULPA filters in the pharmaceutical industry

The pharmaceutical production environment needs to configure air filtration systems according to the cleanliness requirements of different areas.

PTFE HEPA filters can be used in the high-efficiency filtration section of clean air conditioning and air treatment equipment. The specific grade needs to be determined according to the production process and clean area requirements.

If the system has a special chemical environment, it is necessary to further confirm whether the PTFE filter material, sealant, frame and other contact materials match the actual environment.

11. Why Aili Industrial PTFE high-efficiency/super-high-efficiency air filters are suitable for some special environments

It should be noted that the material resistance of PTFE is not directly equivalent to the chemical resistance of the entire filter. The filter's frame, adhesives, gaskets, protective nets and other components also need to match the actual working conditions.

12. Sealing method of Aili Industrial PTFE high-efficiency/super-high-efficiency air filter

The actual use effect of high-efficiency filters is not only related to the filter material itself, but also related to the seal between the filter material and the frame and the seal between the filter and the installation frame.

Therefore, when selecting a PTFE HEPA/ULPA filter in a clean system, you should confirm both the filter body seal and the on-site installation seal.

13. How to select Aili Industrial PTFE HEPA/ULPA filters

Step 1 → Determine the filtering level

Determine H13, H14, U15, U16, U17 and other filtration levels according to the clean area and air treatment requirements.

Step Two → Determine Filter Size

Measure the installation position: width W → height H → thickness D. If it is a replacement product, it is recommended to provide the original filter model and size.

Step 3 → Determine system air volume

The filter needs to match the system design air volume. The air volume cannot be determined solely based on the filter size, but also needs to be confirmed in combination with the rated wind speed and the allowable resistance of the system.

Step 4 → Determine the sealing method

Choose according to the equipment structure: EPDM seal → Liquid tank seal → Integrated PU seal

Step 5 → Determine the frame material

An aluminum profile frame can be used for regular configurations and surface oxidation treatment can be performed. For special environments, materials can be confirmed according to project requirements.

Step 6 → Confirm the actual working environment

If there is high humidity, chemical media, special temperatures or other special working conditions, this should be stated during the selection stage.

14. Aili Industrial PTFE HEPA/ULPA filter customization content

15. What is the difference between PTFE HEPA/ULPA filter and glass fiber HEPA filter?

There is no simple relationship between the two filter materials. The choice of PTFE or glass fiber should be comprehensively judged based on the project's cleanliness requirements, humidity, chemical environment, air volume, resistance, cost and equipment structure.

16. What should you pay attention to when using PTFE filters?

17. Product testing and performance confirmation

The filtration efficiency of PTFE HEPA/ULPA filters cannot be judged solely based on the name of the filter material.

Actual product performance requires a combination of:

Filtration level → Test aerosol → Test particle size → Test wind speed → Pressure conditions → Test method for evaluation.

There are special testing methods and evaluation systems for HEPA and ULPA filters. IEST-RP-CC007 provides relevant testing guidance for HEPA and ULPA filter factory efficiency testing, and involves testing and evaluation in the 0.1~0.3μm particle size range and different penetration rate conditions.

Therefore, the filtration level parameters on the Aili Industrial product page are used for product selection reference, and the specific project acceptance parameters should be based on the corresponding product specifications and test reports.

18. Aili Industrial PTFE HEPA/ULPA filter

Aili Industry has long been engaged in the R&D and production of air purification equipment and high-efficiency filtration products. PTFE HEPA/ULPA filters can be used with FFU, EFU, clean air conditioners and other air treatment equipment.

For different projects, filtration level → size → air volume → resistance → frame → sealing → usage environment .product specifications can be confirmed according to:

For equipment that cannot match the standard size, non-standard size design can also be carried out according to the installation space.

19. PTFE HEPA/ULPA filter application product portfolio

20. PTFE HEPA/ULPA FAQ

What is a PTFE HEPA filter?

PTFE HEPA filter is a HEPA high-efficiency air filter that uses polytetrafluoroethylene (PTFE) membrane material as the filter medium. It is mainly used to filter fine particles in the air.

What is PTFE ULPA filter?

PTFE ULPA filters use PTFE membrane materials, are designed and tested according to ULPA grades, and can be used in clean air treatment systems with higher requirements for particle control.

Are PTFE and polytetrafluoroethylene the same material?

yes. PTFE is the English abbreviation of Polytetrafluoroethylene, which is usually called polytetrafluoroethylene in Chinese.

Can PTFE filters be used for H13?

Can. Aili Industrial's existing product specifications include H13, H14, U15, U16, U17 and other filtration grade configurations. The specific efficiency is subject to the corresponding product testing data.

Can PTFE filters be used for H14?

H14 products can be configured according to project requirements. The actual filtration efficiency needs to be subject to the corresponding product test results.

Can PTFE filters be ULPA?

Can. This series of products of Aili Industry can be configured with U15, U16, and U17 grades.

Are PTFE filters suitable for the semiconductor industry?

Can be used in semiconductor clean air treatment scenarios. The specific use of HEPA or ULPA needs to be determined based on the cleanliness level and equipment system requirements.

Can PTFE filters be used in the pharmaceutical industry?

Can be selected according to the requirements of the clean system. It needs to be confirmed based on the production area, air treatment method and filtration level.

Are PTFE filters resistant to high temperatures?

The maximum operating temperature given by Aili Industrial's existing product data is 70°C. If the actual ambient temperature is close to or exceeds this parameter, the specific configuration needs to be confirmed before ordering.

Are PTFE filters chemical resistant?

The PTFE material itself has certain tolerance to a variety of chemical media, but the entire filter also includes components such as frames, sealants, and gaskets. Therefore, special chemical environments require confirmation of material compatibility of the complete product.

Are PTFE filters afraid of water?

PTFE material has good moisture resistance, but the filter is not a waterproof device. If the product is exposed to high humidity, condensation or liquid water environment for a long time, selection and confirmation must be made based on actual working conditions.

Are PTFE filters better than fiberglass filters?

It cannot be simply compared like this. PTFE and glass fiber are different filter materials and should be selected based on factors such as filtration efficiency, air volume, resistance, humidity, chemical environment, and project cost.

What is the resistance of PTFE filter?

The resistance is related to the filter material structure, filtration grade, size, fold number and test air volume. A fixed value cannot be used to represent all PTFE filters. The specific resistance should be based on the corresponding product test data.

Can PTFE HEPA filters be custom sized?

Can. Aili Industry supports customization based on installation dimensions and equipment structure.

Can I make non-standard PTFE filters?

Can. Product size, frame, sealing method and filtration level can be confirmed according to project requirements.

What sealing methods are available for PTFE filters?

Existing product information includes EPDM gaskets, liquid tank seals and integrated PU seals.

What material is the PTFE filter frame made of?

The existing product information uses an aluminum profile frame and undergoes surface oxidation treatment. Special projects can further confirm material requirements.

Are PTFE filters suitable for installation in AHU?

It can be configured according to the AHU filter section size, air volume, efficiency level and installation structure.

Can PTFE ULPA be used in FFU?

It can be designed according to the FFU size, fan air volume and filter installation space.

How to replace PTFE filter?

First, shut down the relevant air handling equipment and confirm that the system is in a safe maintenance state, then remove the old filter and check the installation frame and sealing structure, and finally install the new filter in the correct direction and check the seal.

21. What parameters need to be provided for PTFE HEPA/ULPA filter selection?

22. Aili Industrial PTFE HEPA/ULPA filter

If you are choosing a PTFE HEPA or PTFE ULPA filter, it is recommended to provide the filtration grade, size, air volume and usage environment when making an inquiry.

Filtration level → Size → Air volume → Resistance → Frame → Sealing → Use environment

Aili Industry can confirm the filter structure and specifications based on project parameters, and provide corresponding product configurations based on different clean air treatment equipment.