Nomex heat-resistant dust filter bag

Since 2010, Tan Thanh (formerly Dat Tin) has been producing and providing Nomex Heat-Resistant Dust Filter Bag in the Vietnamese, serving as alternatives to imported products. These bags are made with meta-Aramid filter materials obtained from world-renowned filter material manufacturers and are widely used across different manufacturing sectors, including hot asphalt concrete, coal-fired boilers, incinerators, cement, chemicals, coal, and minerals. 

Nomex Filter Material (m-Aramid)

What Nomex is?

From meta-Aramid origin fiber, Dupont brand (from USA) created fireproof fabric at woven and nonwoven fiber, first published in 1967 with the name Nomex. Since then, “Nomex” gradually became the common name for high temperature resistant m-Aramid fiber fabric.

Microscopic images of m-Aramid fiber (Nomex):

M-Aramid fiber, with its oval shape (not round), creates a larger filter area compared to PE and PPS fibers, allowing it to filter very fine dust effectively.

With the own fireproofing and anti-abrasion features, Nomex fabrics are improved with more durable, lighter and expand the application.

The main feature of Nomex material

• Advantage: Withstands high temperatures (up to 220ºC), very good alkali resistance, especially suitable for hot dry exhaust gas environments – where material hydrolysis is difficult to occur. Therefore, Nomex heat-resistant dust filter bags (m-Aramid) are widely used in dust filtration applications for hot asphalt concrete stations, cement production lines, metallurgy industry, material drying systems, etc.
• Disadvantage: m-Aramid fibers are susceptible to hydrolysis, easily damaged by acid vapors, so Nomex dust filter bags are generally only suitable for certain application areas where they can demonstrate the above strengths.

Scale of heat resistance and chemical resistance of Nomex filter media in dry conditions:

Nomex filter material manufacturers:

Nowadays, there are many manufacturers worldwide, particularly Gutsche (Germany) and AOG (Japan & India), which are the primary suppliers of TAN THANH in making filter bags.

Gutsche’s special technologies apply to Nomex filter materials:

• Membratex®: PTFE membrane helps to filter fine dust, even dust size PM 2.5, qualified Zero E emission.
• Sparktex®: Create layer in surface “fence” to against sparks, preventing burning dust particles from entering the dust filter chamber.
• Antafin®: Nomex surface treatment increases anti-stick, moisture and oil resistance, helping to prevent fabric bags from being clogged, clogged with dust and rotten.
• Condutex®: Helps remove static electricity from dust and prevent fires and explosions, qualified by ATEX 137, DIN 54345/ part 1 & 5.

AOG’s special technologies applied to Nomex filter materials:

• Nomex®: Through a license with DuPont Company (USA), AOG products using Nomex fibers will be called Nomex.
• Fluorobond™: Nano-ceramic thin membrane increases heat and friction resistance, equivalent to or better than PTFE coating, creating higher performance without increasing material size.
• Staticguard™: Helps handle potentially explosive dust, discharge electrostatic dust easily and quickly, minimize fires and explosions, and minimize accidents caused by dust explosions.

Quality testing organizations set standards for filter materials:

There are many organizations that can test the quality of Nomex filter material, the leading ones are:

• ISO – The International Organization for Standardization
• DIN – Deutsches Institut für Normung
• VDI – Verein Deutscher Ingenieure
• FDA – Food and Drug Administration

Filter mater with m-Aramid nonwoven fiber qualified in density, weight, thickness, tension, tensile strength, heat resistance, air permeability, shrinkage, resistance to chemical effects (acid, alkali, oxidation, hydrolysis,…).

Tan Thanh Nomex Heat-Resistant Dust Filter Bag

Prodution capacity of Tan Thanh Nomex heat-resistant dust filter bags:

With 13 years of production experience in different type of Nomex filter bags, Tan Thanh human resources staff have been trained thoroughly from GUTSCHE and AOG experts, understood the techniques and produced high quality Nomex bags that are suitable and meet the strict requirements for each customer.

Manufactured on modern, automatic machinery lines, we create high quality and consistent Nomex filter bags. The entire process is applied to ISO 9001-2015 standards.

Structure of Nomex heat-resistant dust filter bag manufactured by Tan Thanh:

Refer Tan Thanh’s video of applying glue to heat-resistant dust filter bags:

Reference of Tan Thanh Nomex heat-resistant dust filter bag with the material specifications:

References: 

GUTSCHE: Technical Data 2009. GUTSCHE porotex® Product Programme. Test Report (CQ 12/2022, CQ 2/2023).
Website: Product Range – Lydall Gutsche GmbH & Co. KG (lydall-gutsche.com)

AOG: AOG Brochure. Advanced Material Division (product specification). Product Information 2017. Certificate Of Analysis (COA 2017).
Website: ARVIND OG NONWOVENS PVT. LTD. | OG Corporation

Application of Nomex heat-resistant dust filter bag

Widely used in manufacturing plants: hot asphalt concrete, coal-fired boilers, incinerators, cement, coal chemicals and minerals.

Bag filter for many other industries with dust ambient temperature from below 200°C.

Further reference

TECHNICAL SUPPORT

1. Túi lọc bụi nào là phù hợp (Which dust filter bag is suitable?)
2. Túi lọc bụi chịu nhiệt Nomex là gì (What is Nomex heat-resistant dust filter bag?)
3. Các đặc tính nổi bật của túi lọc bụi Nomex (Outstanding features of Nomex dust filter bags)
4. Cách tự kiểm tra túi lọc bụi để chuẩn bị thay thế (How to check the dust filter bag yourself to prepare for replacement)
5. Kế hoạch, các bước thực hiện bảo trì, vệ sinh, thay thế túi lọc bụi (Plan and steps to perform maintenance, cleaning, and replacement of dust filter bags)

NEWS

1. Hợp tác cùng GUTSCHE LYDALL (Cooperates with GUTSCHE LYDALL)
2. Distributor Certification from GUTSCHE ALKEGEN 
3. AOG Agent Certification 
4. Certification of ISO 9001:2015

CASE STUDIES

1. Sử dụng dịch vụ kiểm tra, dò tìm túi lọc bị thủng (thoát bụi) (Use the service to check and detect punctured filter bags)
2. Hệ lọc bụi có thể cải tiến, nâng cấp hay không? (Can the dust filter system be improved or upgraded?)
3. Tại sao túi lọc bụi liên tục bị hư hỏng khi vận hành? (Why are dust filter bags constantly damaged during operation?)