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.
7031 Electrical Polyester Fiber Nonwoven Fabric is a high-performance material designed for electrical insulation applications. Made from premium polyester fibers using advanced nonwoven technologies such as thermal bonding and needlepunching, this fabric offers excellent mechanical strength, dimensional stability, and uniform fiber distribution. It is widely used in electrical and electronic industries where insulation, heat resistance, and durability are critical. With lightweight construction and high flexibility, 7031 electrical polyester fiber nonwoven fabric provides both efficiency and reliability for a wide range of applications. Its nonwoven structure allows for customizable thickness, density, and surface treatment, making it a versatile solution for insulation, filtration, and protective layers.
The fabric meets stringent industry standards and is recognized for its excellent dielectric properties, thermal stability, and resistance to moisture and chemicals. Engineers and manufacturers rely on 7031 polyester nonwoven fabric for high-quality insulation in motors, transformers, generators, and other electrical devices. It is also appreciated for its eco-friendly manufacturing process, which reduces waste and allows recycling of polyester fibers.
The 7031 electrical polyester fiber nonwoven fabric is characterized by precise and consistent parameters, which ensure its suitability for demanding electrical applications:
Material: 100% high-quality polyester fiber (PET)
Manufacturing Process: Thermal bonding, needlepunching, or hot-roll bonding
Thickness: 0.3 mm – 3.0 mm (customizable based on application)
Weight: 40 g/m² – 300 g/m² (adjustable according to requirement)
Fiber Orientation: Predominantly oriented for mechanical strength
Tensile Strength: High longitudinal and transverse strength for stability
Dielectric Strength: Excellent insulation performance under high voltage
Thermal Resistance: Operating temperature up to 150°C continuously
Moisture Absorption: Low water retention for stable electrical performance
Color: Natural white or customized according to customer demand
Eco-Friendly Compliance: Recyclable and RoHS compliant
These parameters make 7031 polyester fiber nonwoven fabric ideal for applications requiring precision, durability, and reliable insulation.
7031 electrical polyester fiber nonwoven fabric is widely used in industries where high-quality insulation, heat resistance, and mechanical stability are essential. Common applications include:
Electrical Insulation:
Transformer insulation layers
Motor winding insulation
Generator and alternator components
High-voltage electrical devices
Industrial Use:
Filtration layers in air and liquid filters
Protective linings in machinery
Reinforcement layers in composite materials
Automotive Applications:
Insulation in electrical systems and battery compartments
Soundproofing and vibration damping layers
Consumer Electronics:
Insulation for power supplies, chargers, and adapters
Thermal protection layers in devices with heat-sensitive components
Specialized Applications:
Fire-retardant or flame-resistant variants for high-safety environments
Moisture-resistant insulation for humid conditions
This versatility makes 7031 electrical polyester fiber nonwoven fabric a preferred choice for engineers, manufacturers, and designers worldwide.
Proper handling and installation of 7031 electrical polyester fiber nonwoven fabric are crucial for optimal performance. The following guidelines ensure maximum durability and effectiveness:
Cutting and Shaping:
Use sharp scissors, rotary cutters, or laser cutting tools to achieve clean edges. Avoid excessive pulling to prevent fiber distortion.
Layering and Lamination:
When used as insulation, layer the fabric according to the voltage rating and thickness requirements. Lamination with compatible adhesives may be applied if additional bonding strength is required.
Cleaning:
Keep the fabric free from oil, dust, and chemicals before installation. Light brushing or compressed air can remove debris.
Storage:
Store rolls in a cool, dry, and ventilated environment. Avoid direct sunlight and high humidity to maintain dielectric properties.
Safety Precautions:
Handle with care to avoid tearing or stretching. Personal protective equipment (PPE) such as gloves is recommended when cutting or installing large sheets.
Following these instructions ensures that the 7031 electrical polyester fiber nonwoven fabric maintains its mechanical and electrical properties throughout its service life.
Q1: What makes 7031 electrical polyester fiber nonwoven fabric suitable for high-voltage applications?
A1: Its uniform fiber distribution, high tensile strength, and excellent dielectric properties provide stable insulation, preventing electrical breakdown and enhancing device safety.
Q2: Can the thickness and density of 7031 fabric be customized?
A2: Yes, manufacturers can adjust weight, thickness, and density according to specific electrical or mechanical requirements.
Q3: Is 7031 nonwoven fabric flame-retardant?
A3: Standard 7031 fabric is heat-resistant, but flame-retardant variants are available for high-safety applications.
Q4: How does it compare to traditional paper or woven insulation materials?
A4: Compared to paper or woven fabrics, 7031 polyester fiber nonwoven fabric offers superior mechanical strength, uniformity, and moisture resistance while being lightweight and flexible.
Q5: Is this material environmentally friendly?
A5: Yes, it is recyclable, RoHS compliant, and produced using energy-efficient nonwoven processes, minimizing environmental impact.
Q6: Can it be used in automotive electrical systems?
A6: Absolutely. Its heat resistance, durability, and flexibility make it ideal for motor, battery, and wiring insulation in automotive applications.
Q7: How should I store 7031 nonwoven fabric rolls?
A7: Store in a cool, dry, ventilated space away from direct sunlight and high humidity. Proper storage preserves dielectric properties and prevents fiber degradation.
7031 Electrical Polyester Fiber Nonwoven Fabric is a high-performance, versatile material engineered for electrical insulation and industrial applications. With superior tensile strength, thermal resistance, dielectric properties, and customizable specifications, it meets the rigorous demands of transformers, motors, generators, automotive systems, and consumer electronics. Its eco-friendly production, lightweight construction, and adaptability make it a reliable choice for manufacturers seeking high-quality insulation solutions. By following proper handling, installation, and storage guidelines, 7031 polyester fiber nonwoven fabric ensures long-term performance, safety, and efficiency. Whether used for electrical insulation, industrial filtration, or specialized applications, this fabric remains a key material in modern engineering and manufacturing.
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