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Primary Filter Fabric

Home Filter Material Filter FabricPrimary Filter Fabric

Primary Filter Fabric – Protecting Key Components, Enhancing System Efficiency

Primary filter fabric is a key component in HVAC systems, significantly enhancing system operational efficiency, protecting subsequent filters, and extending their service life. PLM Filter offers a variety of primary filter fabrics suitable for various working environments, including high humidity, high temperature, and sticky dust. Our products include DPA paint mist filter cotton, glass fiber paint stop filter, non-woven filter cotton, high-temperature resistant filter cotton, activated carbon honeycomb cotton, and mesh-covered primary cotton, featuring low cost, long lifespan, and reusability.

We have been deeply involved in the HVAC filtration field for many years, collaborating with numerous enterprises to develop various air filtration solutions, becoming a leading force in industry innovation.

Product Catalogue Order Information

Primary Filter fabrics and a primary filter

High Efficiency, Low Resistance, Large Dust-Holding Capacity
High Tensile Strength
Stable Performance, Economical & Practical
Highly Ventilated
Easy, Quick Replacement

Material Treatment
Types
Application
Common Specifications

Material Treatment

Flame Retardant Modification

Add flame retardants to inhibit the oxidation reaction that leads to combustion.

Waterproof Treatment

This function is achieved by using waterproof fibers or waterproof coatings.

Antimicrobial Treatment

Antimicrobial agents are applied either as a surface treatment or as a component within the fibers.

Adsorption Treatment

Activated carbon is the preferred adsorbent for filter media.

Types

DPA (Deltrian Paint Arrestor) Paint Mist Filter Cotton

Material: Ultra-strength 3D synthetic material
Process: Double-layer composite, progressively increasing fiber density
Filtration grade: G3, G4
Features: Large paint mist capture capacity, low initial pressure, relatively high filter rating.
Application equipment: DPA paint mist filter (pleated, bag-type, flat-type)
Application field: Widely used in paint mist filtration in spray booths and various industries' paint exhaust gas purification treatment, it is an updated replacement for traditional wet paint mist purification products.

Glass Fiber Paint Stop Filter (Paint Mist Felt)

Material: Long glass fiber
Process: Made with a non-woven gradient density structure
Features: Good strength, excellent elasticity, high paint mist dust capture efficiency, and low resistance.
Filtration grade: G3, G4
Application equipment: Can be equipped with a galvanized steel frame or an aluminum alloy frame, and can also be equipped with a metal backing mesh
Application field: Primary air filtration in general air conditioning systems; dry painting projects such as spray booths, automotive spray paint room exhaust systems; ground exhaust filtration in automotive spray and bake paint rooms

High-Temperature Resistant Filter Cotton

Material and process: Made of polyamide and polyimide by non-woven lamination
Features: Low wind resistance, good permeability, stable performance, strong chemical resistance
Filtration grade: G3, G4
Application equipment: Panel filter
Application field: Widely used in automobile factories, thermal power plants, carbon black plants, coking plants, smelting plants, asphalt plants, paint factories, as well as high -temperature flue and hot air filtration in electric arc furnaces, oil boilers, and incinerators.

Primary Non-Woven Filter Cotton

Material: Polyester fiber
Process: Needle punching
Features: Large air volume, low resistance, sturdy structure, can be washed and reused multiple times
Filtration grade: G1, G2, G3, G4
Application equipment: Typical filter material for panel and bags filters
Application field: Spray painting industry, electroplating industry, air conditioning industry, home appliance industry, automobile industry, motorcycle manufacturing and other ventilation air conditioning systems in various air purification fields.

Activated Carbon Honeycomb Cotton

Material: Poly urethane foam and activated carbon
Process: Made by loading powdered activated carbon onto polyurethane foam
Features: Good formability, very low air resistance and pressure drop, good deodorization and dust blocking effect
Type: Flame retardant and non-flame retardant
Filtration grade: G3, G 4, F5
Application equipment: The outer frame can be made of waterproof cardboard, galvanized iron frame, aluminum frame, or stainless steel material
Application field: Industrial waste gas purification packing, various civilian air purifiers, oil fume purification, refrigerator deodorization, etc.

Mesh-Covered Primary Cotton

Material: Polyester fiber + iron mesh
Process: Using polyester fiber filter material, fibers with different melting points inside and outside are arranged in a non-directional three-dimensional structure, and made through processes such as needle punching, bonding, and hot melting.
Features: The product has multiple characteristics such as tightly bonded fibers, resistance to breakage, non-shedding, corrosion resistance, wear resistance, elastic recovery, and long service life.
Filtration grade: G3, G4, F5
Application equipment: Used for filter materials in metal filters such as cardboard frames, aluminum frames, and galvanized frames.
Application field: Automotive, HVAC system pre-filtration

Typical HVAC System and Its Application

To ensure proper protection of people's health, air filters in HVAC systems need to operate at higher efficiency. Therefore, it is particularly important that filters at all levels and their filter materials comply with relevant standards and guidelines in this regard. The filters and their materials used in the system must ensure that the levels of indoor dust, bacteria, fungi, and biological components do not exceed those in the outdoor air.

To achieve the required indoor air quality, our multi-stage filter material solutions have been developed. Regarding Primary Filterfabric, we have multiple products for different application environments. As the primary filtration stage in HVAC systems, it is mainly used to remove 5 μm – 10 μm dust particles.

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Common Specifications

Table 1: Common Specifications of Primary Filter Fabric
Code Number	Type	Weight g/m²	Efficiency	Initial Resistance Pa	High-Temperature Resistance °C
LMCW-150	Non-woven filter cotton	150	G4	25	≤ 100
LMCW-200	Non-woven filter cotton	200	G4	30	≤ 100
LMCW-250	Non-woven filter cotton	250	G4	35	≤ 100
LMCW-280	Non-woven filter cotton	280	G4	40	≤ 100
LMDPA-15	DPA paint mist filter cotton	–	G4	15	≤ 100
LM-50	Glass fiber paint stop filter	–	G3	20	170
LM-100	Glass fiber paint stop filter	–	G4	25	170
LM-HC-34	High-temperature resistant filter cotton	–	G4	34	240
Note: The above are some common specifications and parameters. If you do not find a suitable product, you can contact our sales staff for detailed inquiries. Contact Us

Professional Advice

Choosing the type of primary filter fabric requires considering the specific requirements and conditions of the working environment. To ensure you can efficiently select the most suitable product, we will recommend the best product type based on your actual application and provide full-process technical support.

First, the grades of primary filter fabric include G1, G2, G3, and G4. The higher the grade, the higher the filter rating. For environments with high cleanliness requirements, you can choose a slightly higher efficiency primary filter fabric. Conversely, you can choose a conventional primary filter fabric.
Secondly, consider the dust concentration. In environments with high dust concentration, it is advisable to choose multi-layer filter materials to improve their service life; in low dust concentration environments, you can choose thin, economical filter fabric.
In environments with high humidity, high temperature, and chemical corrosion, the filter material needs special treatment to achieve the desired performance.
Additionally, cost and service life. In situations where repeated use is required, washable filter fabric can be chosen to reduce replacement costs.

We are committed to providing you with the most professional service and the highest quality products. We look forward to cooperating with you. If you have any questions or needs, please feel free to contact us.

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Customize Your Solution

PLM Filter provides customized solutions for primary, medium, and high-efficiency filter manufacturers (including sample testing and customization) to meet specific customer needs.

Expert Consultation

Production Process & Product Recommendations

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Primary, Medium & High-Efficiency Filter Production Process

Providing various filter fabric, metal mesh and hot melt adhesive for primary, medium and high-efficiency filter production.