Product Specifications:
Thickness | Width |
0.03-0.15mm | 510-1500mm |
Product Color: Can be customized according to customer needs (minimum order quantity is 6 tons).
I. Product Introduction:
Our factory produces electrical polyester fiber nonwoven fabric (7031), which is made from polyester staple fiber (PET) using a thermal bonding method and mechanically carded into a web, resulting in oriented fiber distribution.
It features high heat resistance, excellent impregnation and dielectric properties, a uniform and smooth fabric surface, small thickness deviation, high tensile strength, and a neat appearance.
II. Specific Requirements:
1. Appearance:
The surface of the nonwoven fabric should be uniform and flat, neatly rolled, and free from damage and contamination. Neps and fiber bundles are permissible within the thickness tolerance range.
2. Dimensions:
(1) 7031 nonwoven fabric is supplied in rolls, each roll having a diameter of not less than 250mm, with no more than three sections per roll, the smallest section being not less than 100mm, and each section clearly marked. The inner diameter of the paper tube is 76mm.
(2) The maximum width of 7031 nonwoven fabric is 1560mm, with a permissible deviation of ±5mm.
(3) The thickness and permissible deviation of 7031 nonwoven fabric should conform to the provisions of Table 1.
(4) Other sizes and specifications of nonwoven fabric can be specified according to the contract.
(5) The physical and mechanical properties of the nonwoven fabric should conform to the relevant provisions of Table 1.
Table 1
Number | Performance | Unit | Required nominal thickness (mm) | 0.03 | 0.035 | 0.04 | 0.05 | 0.06 | 0.07 | 0.08 | 0.1 | 0.12 | 0.13 | 0.15 | |
1 | Quantitative | g/㎡ | 21 | 24 | 28 | 35 | 42 | 49 | 56 | 70 | 85 | 91 | 100 | ||
2 | Quantitative Inequality | ％ | ≤10 | ||||||||||||
3 | Apparent density | g/cm² | 0.65±0.10 0.70±0.10 | ||||||||||||
4 | Tensile strength | Vertical | N/50mm | ≥30 | ≥35 | ≥40 | ≥60 | ≥70 | ≥80 | ≥90 | ≥100 | ≥150 | ≥200 | ≥240 | |
Horizontal | Width | ≥6 | ≥8 | ≥10 | ≥20 | ≥22 | ≥25 | ≥27 | ≥30 | ≥50 | ≥70 | ≥100 | |||
5 | Elongation at break | Vertical | ％ | ≥6 | ≥6 | ≥6 | ≥6 | ≥6 | ≥8 | ≥8 | ≥10 | ≥10 | ≥10 | ≥10 | |
Horizontal | ％ | ≥3 | ≥3 | ≥3 | ≥3 | ≥3 | ≥5 | ≥5 | ≥5 | ≥5 | ≥8 | ≥8 | |||
6 | Thermal shrinkage rate | ％ | ≤4 ≤3 | ||||||||||||
Remark | Heat shrinkage test conditions：150℃，1 hour | ||||||||||||||
III. Physical and Mechanical Properties of 7031 Nonwoven Fabric
1. Packaging: Each roll of nonwoven fabric is wrapped in a plastic film, then an outer waterproof woven bag. The ends of the core are sealed with corresponding plastic cores. The inner tube is a 1.8cm thick high-pressure paper tube.
2. Marking: The outer packaging bag should be marked with the manufacturer, product name, model, specifications, batch number, net weight, production date, etc.
3. Storage: 7031 nonwoven fabric should be stored in a cool, dry, clean, and well-ventilated warehouse below 40℃. It should not be near fire sources or heating, and should not be exposed to direct sunlight. The shelf life is one year.
IV. Scope of application:
Widely used in composite materials (DMD, DM, DMDM), mica tape reinforcing materials, electrical laminates, insulating varnish cloth base fabric, and end wrapping of electrical appliances, transformers, and motor coils. It is also suitable for small and flexible cables, household electrical cables, communication optical cables, and can replace various types of paper insulation materials.
Electrical Nonwoven Fabric is a high-performance material engineered for insulation and protection in electrical and electronic applications. Unlike woven or knitted fabrics, nonwoven fabrics are created by bonding fibers directly, resulting in a uniform structure that provides excellent mechanical strength, thermal stability, and dielectric properties. Electrical nonwoven fabrics are widely used in transformers, motors, generators, power supply units, and other high-voltage equipment where reliable insulation is critical.
Typically made from high-quality synthetic fibers such as polyester (PET) or polypropylene (PP), electrical nonwoven fabric can be customized for thickness, density, and surface treatment. Its lightweight yet durable construction ensures long-term reliability while maintaining ease of handling during production and assembly. The material is also valued for its moisture resistance, chemical stability, and thermal performance, making it suitable for harsh industrial environments.
Modern electrical nonwoven fabrics can be engineered to meet specialized requirements, including flame retardancy, high-temperature resistance, and enhanced dielectric performance. Furthermore, many products are eco-friendly, recyclable, and compliant with international standards such as RoHS and REACH. The combination of superior electrical insulation, mechanical durability, and flexibility makes electrical nonwoven fabric a preferred solution for engineers, manufacturers, and designers worldwide.
Electrical nonwoven fabrics are manufactured to precise specifications to ensure consistent performance in demanding applications. Key parameters include:
Material Composition: 100% high-quality polyester (PET), polypropylene (PP), or blends
Manufacturing Process: Thermal bonding, needle punching, spunbond, or melt-blown
Fabric Weight: 40 g/m² – 400 g/m², adjustable per application
Thickness: 0.2 mm – 5.0 mm, customizable for insulation and protection needs
Fiber Orientation: Random or predominantly oriented for mechanical strength
Tensile Strength: High longitudinal and transverse strength for durability
Dielectric Strength: Excellent electrical insulation performance under high voltage
Thermal Resistance: Continuous operating temperature up to 150°C
Moisture Absorption: Low water retention to maintain dielectric properties
Flame Retardancy: Optional flame-resistant or fire-retardant variants
Color: Natural white, grey, or custom colors available
Eco Compliance: Recyclable, RoHS and REACH compliant
These specifications ensure that electrical nonwoven fabrics are suitable for a wide range of insulation and protective applications, maintaining performance under challenging operating conditions.
Electrical nonwoven fabric finds extensive use across multiple industries, particularly where insulation, protection, and thermal management are critical:
Insulation for transformers, motors, and generators
Dielectric barriers in high-voltage equipment
Thermal and electrical protection for power supply units, battery packs, and electronic devices
Winding insulation and separation layers
Electrical insulation and battery compartment lining in electric and hybrid vehicles
Wire harness protection and thermal barriers
Cabin air filters and soundproofing materials
Insulating layers for high-voltage equipment and electrical panels
Protective layers in machinery and industrial electronics
Geotextiles and reinforcement layers in composites requiring electrical isolation
Air and liquid filtration media requiring dielectric safety
Oil absorption pads and spill control fabrics in industrial settings
Cleanroom and laboratory insulation and protective materials
Insulation in chargers, adapters, and power electronics
Heat management layers for devices sensitive to high temperatures
Flame-retardant fabrics for fire-safe installations
Moisture-resistant insulation for humid environments
High-temperature variants for industrial and power generation applications
Electrical nonwoven fabric’s versatility makes it indispensable in industries requiring high-quality insulation, mechanical stability, and long-term reliability.
Proper handling, installation, and storage are crucial for maintaining the performance of electrical nonwoven fabrics:
Cutting and Shaping:
Use sharp scissors, rotary cutters, or laser cutting tools for precise edges. Avoid pulling or stretching the fabric to maintain fiber alignment and dielectric properties.
Layering and Lamination:
For insulation applications, stack multiple sheets according to voltage rating and thickness requirements. Adhesive bonding or heat lamination may be used to enhance stability.
Cleaning:
Keep the fabric clean from dust, oil, and chemicals before installation. Compressed air or soft brushes can be used for surface cleaning.
Storage:
Store rolls in a cool, dry, ventilated space, away from direct sunlight, humidity, or extreme temperatures. Proper storage preserves mechanical and electrical properties.
Safety Precautions:
Wear gloves when handling large rolls. Avoid inhaling fine fibers during processing, although most synthetic fibers are non-toxic.
Q1: Why is electrical nonwoven fabric preferred over traditional insulation materials?
A1: Electrical nonwoven fabric offers uniform structure, high tensile strength, excellent dielectric properties, and flexibility, making it superior to paper, woven fabrics, or fiberglass in many applications.
Q2: Can the fabric be customized for different electrical applications?
A2: Yes. Weight, thickness, fiber type, flame retardancy, and surface treatment can all be tailored to meet specific application requirements.
Q3: Is electrical nonwoven fabric flame-retardant?
A3: Standard fabrics are heat-resistant, and flame-retardant or fire-resistant variants are available for safety-critical applications.
Q4: Can it be used in high-humidity environments?
A4: Yes. Polyester and polypropylene electrical nonwoven fabrics exhibit low moisture absorption, maintaining dielectric properties even in humid conditions.
Q5: How environmentally friendly is this material?
A5: Electrical nonwoven fabrics are often recyclable, compliant with RoHS and REACH, and can be produced using energy-efficient processes, reducing environmental impact.
Q6: How should electrical nonwoven fabric be installed for optimal insulation?
A6: Layers should be stacked according to design specifications, with optional adhesive or heat bonding for stability. Avoid compression that might compromise fiber orientation.
Q7: Can it be used in automotive electrical systems?
A7: Absolutely. Its thermal resistance, mechanical durability, and flexibility make it ideal for battery insulation, wiring protection, and motor insulation in vehicles.
Lightweight yet durable
Excellent dielectric strength and insulation performance
Heat-resistant and thermally stable
Moisture and chemical resistant
Customizable for weight, thickness, fiber type, and flame retardancy
Eco-friendly and recyclable
Versatile for electrical, automotive, industrial, and consumer applications
Electrical nonwoven fabric is a versatile, high-performance material engineered for insulation and protection in electrical and electronic applications. Its combination of mechanical strength, thermal stability, dielectric properties, and flexibility makes it indispensable for transformers, motors, generators, automotive electrical systems, consumer electronics, and industrial equipment. Proper handling, installation, and storage ensure long-term reliability and optimal performance. With customizable specifications, flame-retardant options, and environmentally friendly production, electrical nonwoven fabric is a leading choice for manufacturers, engineers, and designers seeking durable, lightweight, and efficient insulation solutions.
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