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 Insulation Nonwoven Fabric Material is a high-performance material designed to provide superior dielectric strength, thermal resistance, and mechanical durability in electrical and industrial applications. Unlike traditional woven or knitted textiles, nonwoven fabrics are manufactured by bonding fibers directly through thermal, mechanical, or chemical processes, resulting in a uniform, lightweight, and durable material.
This type of nonwoven fabric is engineered specifically for electrical insulation, fire safety, and thermal management. It is commonly made from synthetic fibers such as polyester (PET) or polypropylene (PP) and treated with additional coatings or flame-retardant additives to enhance performance under high temperatures and electrical stress. Its structure ensures excellent dielectric properties, high tensile strength, low moisture absorption, and chemical stability, making it ideal for modern electrical equipment.
Electrical insulation nonwoven fabrics are widely used in transformers, motors, generators, switchgear, battery packs, and other high-voltage systems. Manufacturers ensure that these fabrics meet international standards such as UL, IEC, EN, and RoHS, providing reliable performance, safety, and regulatory compliance.
Electrical insulation nonwoven fabrics are versatile materials that combine mechanical strength, thermal resistance, and dielectric performance. They can be produced in various thicknesses, densities, and weights to meet specific electrical insulation and fire safety requirements.
Key features include:
High dielectric strength to withstand high voltage environments
Excellent thermal resistance for continuous operation up to 150°C or higher
Flame-retardant performance to reduce fire hazards
Low moisture absorption to prevent insulation failure
Mechanical strength to resist tearing, compression, and vibration
Chemical and solvent resistance to maintain integrity in industrial environments
Lightweight and flexible, allowing easy installation and layering
These fabrics are suitable for applications that require insulation, protection, and durability under extreme electrical and thermal conditions.
Electrical insulation nonwoven fabrics are manufactured to strict specifications to ensure performance and safety. Typical parameters include:
Material Composition: Polyester (PET), polypropylene (PP), or blended fibers with flame-retardant treatment
Manufacturing Process: Needle punching, spunbonding, thermal bonding, or hydroentangling
Fabric Weight: 40 g/m² – 400 g/m², customizable based on application
Thickness: 0.2 mm – 5 mm, adjustable for insulation, protection, or flame-retardant requirements
Fiber Orientation: Random or oriented for optimal tensile and tear strength
Tensile Strength: High longitudinal and transverse strength for durability and structural stability
Dielectric Strength: Meets high-voltage insulation requirements
Thermal Resistance: Continuous operating temperature up to 150°C, withstanding short-term spikes
Moisture Resistance: Low water absorption for reliable electrical performance
Flame Retardancy: UL 94 V-0 or equivalent international standards
Color: White, gray, or customizable
Eco Compliance: Recyclable, RoHS and REACH certified
These parameters ensure that electrical insulation nonwoven fabrics provide reliable performance in demanding environments.
Electrical insulation nonwoven fabrics are used in a wide range of industries where electrical safety, thermal management, and mechanical durability are critical:
Transformer insulation and winding separation layers
Motor and generator insulation
High-voltage switchgear and circuit breakers
Battery packs and power electronics insulation
Dielectric barriers for electrical assemblies
Insulation for electric and hybrid vehicle batteries
Wire harness and cable protection
Cabin insulation, noise, and vibration damping
Flame-retardant linings for interiors and electrical compartments
Insulation layers for industrial machinery and electrical panels
Protective barriers in manufacturing and processing equipment
Reinforcement in composite materials requiring electrical insulation and thermal resistance
Fire-resistant insulation for chargers, adapters, and power supplies
Thermal management layers for sensitive electronic devices
Protective layers to prevent electrical short circuits
Flame-retardant insulation for public buildings and construction
High-temperature insulation for industrial processes and equipment
Moisture and chemical-resistant insulation for harsh industrial environments
Electrical insulation nonwoven fabrics are ideal wherever reliable, long-lasting insulation and protection are required under electrical, thermal, or mechanical stress.
Proper handling and installation of electrical insulation nonwoven fabrics are essential to maintain their performance:
Cutting and Shaping:
Use sharp scissors, rotary cutters, or laser cutters. Avoid stretching the fabric to maintain fiber alignment and dielectric properties.
Layering and Lamination:
Multiple layers may be stacked to achieve the required insulation thickness. Heat lamination or adhesive bonding can improve stability and mechanical integrity.
Cleaning:
Keep the fabric free from dust, oil, and chemical contaminants prior to installation. Use compressed air or soft brushes for surface cleaning.
Storage:
Store rolls in a cool, dry, ventilated area, away from direct sunlight, high humidity, and extreme temperatures to preserve dielectric and flame-retardant properties.
Safety Precautions:
Wear gloves when handling large rolls. Avoid inhaling fine fibers during cutting or processing, even though most synthetic fibers are non-toxic.
Q1: What makes electrical insulation nonwoven fabric superior to other insulation materials?
A1: It combines high dielectric strength, flame-retardant properties, thermal resistance, and mechanical durability, making it ideal for high-risk electrical environments.
Q2: Can the fabric be customized for specific electrical applications?
A2: Yes. Thickness, weight, fiber composition, flame-retardant treatment, and surface coatings can all be tailored to meet unique application requirements.
Q3: What flame-retardant and insulation standards does it meet?
A3: Many products comply with UL 94 V-0, IEC, EN, and other international standards. Custom certifications can also be provided as required.
Q4: Is the fabric suitable for high-humidity or industrial environments?
A4: Yes. Polyester and polypropylene fibers with flame-retardant treatment have low moisture absorption and chemical stability, ensuring reliable performance.
Q5: How should the fabric be installed to maximize insulation and fire safety?
A5: Layers should be stacked according to design specifications. Adhesive or heat bonding may enhance stability, avoiding excessive compression.
Q6: Is this material environmentally friendly?
A6: Many electrical insulation nonwoven fabrics are recyclable and comply with RoHS and REACH standards.
Q7: Can it be used in automotive electrical systems?
A7: Absolutely. Its thermal resistance, flame retardancy, and mechanical strength make it ideal for battery insulation, wire harness protection, and interior electrical systems.
High dielectric strength and fire-resistant properties
Excellent thermal and mechanical performance
Lightweight, flexible, and easy to handle
Customizable thickness, weight, and fiber type
Low moisture absorption and chemical resistance
Versatile for electrical, automotive, industrial, and consumer applications
Compliant with international safety and environmental standards
Enhances reliability and safety in high-voltage and high-temperature environments
Electrical insulation nonwoven fabric materials are essential for modern electrical, automotive, and industrial applications. They provide superior dielectric strength, thermal resistance, mechanical durability, and fire safety. With customizable specifications, regulatory compliance, and eco-friendly production, these fabrics are ideal for manufacturers, engineers, and designers seeking reliable, high-performance insulation solutions. Proper handling, storage, and installation ensure long-term safety, durability, and efficiency across all applications.
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