quality Transformer Insulation Tape & Fabric Insulation Tape factory

The physical properties of polyester tape are primarily reflected in the following aspects: 1. High-Temperature Resistance Polyester tape typically remains stable in high-temperature environments up to 130°C. Certain specialized types of polyester tape can even be used continuously in higher temperature conditions. This property makes it suitable for insulating and fixing high-temperature components, such as automotive engines, exhaust pipes, aircraft engines, turbine blades, and other parts requiring secure fastening and sealing. 2. Electrical Insulation Performance Polyester tape offers excellent electrical insulation, effectively preventing leakage currents and providing reliable insulation protection for various electrical equipment and circuits. This ensures the safe operation of electrical systems. This property is especially important in the electronics industry, where the tape is widely used for insulating transformers, motors, capacitors, voltage regulators, and other electrical and electronic components. 3. Mechanical Strength Polyester tape has high mechanical strength, offering good resistance to stretching, tearing, and puncturing. It can withstand external forces without easily breaking, effectively protecting wrapped objects from mechanical damage. 4. Chemical Resistance Polyester tape exhibits excellent resistance to various chemical substances such as mineral oils and other oil-based agents, making it不易受 chemical corrosion. This property allows it to maintain stable performance in chemically aggressive environments, such as electroplating, high-temperature baking finishes, and powder coating applications. 5. Conformability Polyester tape is soft and flexible, allowing it to adhere closely to surfaces of various shapes, including complex curves and irregularly shaped objects. This characteristic enables the tape to achieve effective wrapping and insulation, making it suitable for a wide range of fine or precision tasks. 6. Ease of Cutting and Splicing Polyester tape is highly transparent and easy to cut into desired sizes and shapes, facilitating splicing and bonding operations. This property gives it broad applications in industrial processes such as bundling, fixing, lapping, and repairing. 7. Strong Adhesion Polyester tape features strong adhesion, enabling it to bond firmly to various material surfaces and ensuring that the tape does not easily peel off during use.

Polyimide tape is generally non-flammable. This is mainly due to the inherent properties of the polyimide material, which offers excellent high-temperature resistance. Its decomposition temperature is very high, meaning it does not easily reach the decomposition point or ignite within conventional operating temperature ranges. In scenarios with extremely stringent fire safety requirements, such as the nuclear industry, polyimide tape performs reliably. Even under high-temperature conditions — for example, localized high-temperature zones around nuclear reactors — it maintains its structural and chemical stability. It does not burn rapidly as temperatures rise, providing reliable protection for the safe operation of nuclear facilities. Moreover, during the manufacturing process, flame-retardant components may be added to further enhance the tape's flame resistance. These components help inhibit the initiation and spread of combustion, reducing fire risks. However, although polyimide tape is non-flammable under normal conditions, the possibility of combustion cannot be completely ruled out in extreme situations, such as prolonged direct exposure to open flames or abnormally high temperatures

Polyester tape, specifically those utilizing a polyethylene terephthalate (PET) film backing such as Mylar, offers distinct performance advantages over standard pressure-sensitive tapes. The following characteristics demonstrate why it is the preferred choice in demanding industrial, electronic, and engineering applications. Chemical Resistance: The polyester film backing provides superior resistance to a wide range of common chemicals, including acids, alkalis, and solvents. Compared to standard plasticized PVC tapes, polyester tape exhibits significantly higher long-term stability and is specifically suited for corrosive environments commonly found in chemical processing and electronics manufacturing. Electrical Performance: Polyester tape features excellent dielectric strength and high voltage insulation properties. It is widely utilized for insulation protection of electronic components and PCB manufacturing processes. Unlike general-purpose tapes which may fail under high-frequency switching or high-voltage stress, polyester tape maintains reliable electrical isolation. Thermal Stability: This material maintains its mechanical and adhesive integrity across a broad temperature spectrum, typically ranging from -40°C to +150°C. In contrast, PVC tapes are prone to softening and deformation under heat, while paper-based tapes often become brittle at sub-zero temperatures. Mechanical Strength: Characterized by high tensile strength and exceptional resistance to tearing and elongation, polyester tape is ideal for applications requiring robust fastening and support. Common use cases include motor coil banding and flexible printed circuit (FPC) reinforcement. Dimensional Stability: The low thermal shrinkage rate of PET film ensures minimal deformation during temperature fluctuations. This precision is critical in applications such as LCD panel lamination and optical component assembly, where positional accuracy is paramount. Flame Retardancy: Many grades of polyester tape are treated with flame-retardant agents to meet industry safety standards. This provides an essential safety margin over more flammable generic tapes, ensuring compliance with fire prevention requirements in consumer electronics and electrical enclosures. Comparative Summary:While standard plastic tapes (PVC) offer a lower unit cost, they are susceptible to plasticizer migration and aging. Cloth tapes provide high tensile strength but lack chemical and moisture resistance. Polyimide tapes (Kapton) offer superior high-temperature endurance but at a considerable cost premium. Polyester tape therefore represents the optimal balance between high performance and cost-efficiency, making it the definitive choice for engineers seeking reliability without over-specification.

Electrical insulation failure remains one of the leading causes of field returns in compact electronic devices. When space constraints force designers to reduce insulation layer thickness, the risk of dielectric breakdown increases significantly. Changshu Liangyi Tape Industry Co., Ltd. has developed a flame retardant insulation tape that directly addresses this engineering trade off, delivering dielectric breakdown voltage above 5.0 kV while maintaining a total thickness of only 0.055mm ±0.005mm.   The tape construction starts with a PET polyester film backing measuring 0.025mm in thickness. An acrylic adhesive system is applied to create the finished tape. This combination achieves a dielectric strength that exceeds many thicker insulation materials on the market. For engineers designing power supplies, battery management systems, or LED drivers, the ability to achieve >5.0 kV isolation with a thin profile enables smaller enclosure designs and tighter component packing.   Changshu Liangyi Tape Industry Co., Ltd. publishes a complete specification sheet that allows design engineers to validate material choices before prototyping. Key electrical properties include insulation resistance of at least 10⁶ Ω, which prevents leakage current across isolation boundaries. The acrylic adhesive contributes to this performance by maintaining consistent contact with the substrate under varying temperature and humidity conditions.   Thermal stability extends to 130℃ continuous operation. Many competing thin insulation tapes lose adhesive bond strength or soften at elevated temperatures, creating air gaps that reduce effective dielectric strength. The Changshu Liangyi flame retardant insulation tape maintains its mechanical and electrical properties across the full temperature range, ensuring that the 5.0 kV rating remains valid under actual operating conditions rather than just at room temperature.   For procurement managers and compliance engineers, the UL certification E246820 provides third party validation of both electrical and flame resistance claims. The tape carries a flame resistant classification, eliminating the need for separate fire retardant treatments in final assembly. This reduces both material cost and chemical handling requirements on the production floor.   The mechanical specifications of the tape support reliable automated application. Peel strength measures at least 250 N/m, ensuring that the tape stays in place under vibration and thermal cycling. Elongation reaches 40 percent, allowing the tape to conform to curved surfaces, wire bundles, and irregular component shapes without cracking or lifting at the edges. Width tolerance is held to ±0.2mm, which is essential for high speed automatic wrapping machines that index tape position optically.   Each roll of Changshu Liangyi flame retardant insulation tape contains a maximum of one splice over the standard 66 meter length. Splices in insulation tape create weak points where dielectric strength may be compromised. By controlling splice count, the company ensures that the >5.0 kV breakdown rating applies consistently along the entire roll length. Length tolerance is specified at ±0.5m, providing predictable roll usage for inventory planning.   The inner core diameter measures 76.64mm ±1mm, compatible with standard tape dispenser spindles and automatic applicator reel holders. Core options include plastic tube or paper tube, selected based on customer preference. The tape is available in multiple colors for visual process control, allowing assembly line operators to verify correct material usage at a glance.   Storage requirements are clearly defined at 23℃ and 65 percent relative humidity, with a validated shelf life of six months. For B2B buyers operating in different climate zones, this specification provides clear guidance for warehouse storage. Packaging consists of an inner plastic bag for moisture protection and an outer carton for mechanical protection during freight shipping.   Solvent retardance is rated as excellent for the acrylic adhesive system. This property becomes critical when the tape is applied to printed circuit boards that undergo subsequent cleaning or conformal coating processes. Solvent exposure does not cause edge lifting, adhesive bleed, or loss of dielectric strength.   Field applications for this flame retardant insulation tape include transformer layer insulation, capacitor wrapping, battery pack cell separation, and motor lead insulation. In each case, the combination of thin profile and high dielectric strength allows designers to meet safety standards  without adding unnecessary material thickness.   For maintenance engineers and field service technicians, the tape provides a reliable repair solution for damaged wire insulation in tight spaces. The 40 percent elongation allows the tape to stretch slightly for tight wrapping, while the 250 N/m peel strength ensures the repair stays in place despite vibration or cable movement.   Changshu Liangyi Tape Industry Co., Ltd. maintains the specification sheet as a quality controlled document. Each production lot can be accompanied by a certificate of analysis upon request, supporting ISO 9001 quality management systems. The company's focus on dimensional precision, electrical performance, and flame resistance makes this product suitable for safety critical applications where insulation failure is not an option. FAQ 1. What is the minimum insulation resistance guaranteed for this tape? The specification sheet guarantees insulation resistance of at least 10⁶ Ω under standard test conditions. This value ensures effective isolation between conductors in low voltage and medium voltage electronic assemblies.   2. Can this tape be used as primary insulation on magnet wire? Yes, the tape is suitable for overwrapping magnet wire coils in transformer and motor applications. The 5.0 kV dielectric breakdown provides margin above typical operating voltages for most industrial equipment.   3. Does the acrylic adhesive leave residue when removed? Acrylic adhesives are designed for permanent application. Removal may leave some residue depending on the surface and duration of application. For temporary masking applications, a different adhesive system would be recommended.   4. How does the 130℃ temperature rating compare to standard PET tapes?  Standard PET insulation tapes are often rated at 105℃. The 130℃ rating of this Changshu Liangyi product allows use in higher temperature environments such as enclosed LED drivers and automotive electronics.   5. Is the tape compatible with automated cutting and placement machines? Yes. The ±0.2mm width tolerance and ≤1 splice per roll make the tape suitable for automated cutting, feeding, and placement systems used in high volume electronics assembly.

Changshu Liangyi Tape Industry Co., Ltd. has engineered a solution that directly addresses one of the most persistent inefficiencies in automated printed circuit board assembly lines:dimensional inconsistency in insulation tape. When tape width tolerance exceeds ±0.2mm, automated wrapping heads misalign, causing edge creep, overlapping errors, and eventual rework. The result is machine downtime, material waste, and increased labor cost. With a structured product specification built around a 0.025mm PET backing and total thickness of 0.055mm ±0.005mm, the flame retardant insulation tape from Changshu Liangyi delivers the exact uniformity required for high speed automatic wrapping equipment. The critical specification lies in the shear tolerance of ±0.2mm, which allows pick and place systems to index precisely without corrective stops. For engineers and procurement managers evaluating insulation materials for high volume production, mechanical consistency is as important as dielectric performance. The tape offers a dielectric breakdown above 5.0 kV and insulation resistance of at least 10⁶ Ω, ensuring that precision does not come at the expense of safety. The acrylic adhesive system maintains bond strength above 250 N/m while allowing elongation up to 40%, which accommodates tight radius corners on transformer cores and motor windings without cracking. Thermal stability reaches 130℃, making the tape suitable for continuous operation inside enclosed power supplies, LED drivers, and solenoid coils. The flame resistant property has been verified under UL standard E246820, providing compliance documentation that regulatory inspectors and certifying bodies expect. One often overlooked source of production waste is tape splicing. Each roll of Changshu Liangyi flame retardant insulation tape contains no more than one splice per 66 meters, with length tolerance of ±0.5m. For automated lines running multiple shifts, unpredictable splices force operators to halt machinery, rethread the tape path, and discard partially wound components. By guaranteeing a maximum of one splice, the product supports lights out manufacturing and just in time inventory systems. The inner core diameter is held to 76.64mm ±1mm, compatible with standard reel holders on automatic wrapping machines from leading manufacturers. Core material options include plastic or paper tube, selected based on customer preference for antistatic properties or recyclability. Width is customizable per order, allowing integration into existing tooling without mechanical modification. Storage stability is specified at 23℃ and 65% relative humidity, with a validated shelf life of six months. For B2B buyers, this removes the guesswork from inventory rotation and reduces the risk of adhesive degradation in warehouse conditions. Packaging consists of an inner plastic bag and an outer carton, protecting the rolls during freight transport and preventing edge damage. Procurement teams frequently request third party validation of performance claims. The UL certification E246820 provides auditable traceability for each production batch. The flame resistance classification eliminates the need for additional flame retardant treatments downstream, reducing both cost and chemical exposure on the factory floor. For design engineers, the acrylic adhesive system offers excellent solvent retardance, meaning that contact with cleaning agents, flux removers, or board wash solutions does not cause edge lifting or adhesive bleed. This property becomes critical in applications where post insulation cleaning is required before conformal coating or potting. Field data from existing customers in the automotive electronics sector shows a 17 percent reduction in insulation related rework after switching to the Changshu Liangyi flame retardant insulation tape, attributed almost entirely to the ±0.2mm width tolerance and splice control. Automated wrapping heads no longer require recalibration between roll changes, and scrap from edge misalignment has dropped below 0.3 percent. The product is available in multiple colors for visual process control, allowing operators to quickly distinguish between different insulation layers or production shifts. Color coding reduces inspection time and prevents assembly errors without adding barcode scanning steps. For purchasing managers, the combination of UL certification, flame resistance, high dielectric strength, and mechanical precision consolidates multiple material requirements into a single stock keeping unit. This reduces inventory complexity and lowers total cost of ownership compared to using separate tapes for electrical, thermal, and mechanical functions. Changshu Liangyi Tape Industry Co., Ltd. maintains the specification sheet as a controlled document, ensuring that each shipment matches the published tolerances. Customers can request certificate of analysis with every lot, supporting ISO 9001 internal audit requirements. FAQ 1. What is the maximum continuous operating temperature for this flame retardant insulation tape?The tape is rated for continuous use at 130℃. Short term exposure to higher temperatures may be possible depending on mechanical load, but sustained operation above 130℃ is not recommended. 2. Does the UL certification E246820 cover both flame resistance and electrical insulation?Yes. UL certification E246820 validates both the flame resistant property and the dielectric performance, including breakdown voltage and insulation resistance. 3. Can the tape be used on automated winding machines with narrow guide rollers?Yes. The ±0.2mm width tolerance ensures smooth feeding through precision guide rollers. Many customers use this tape on automated coil and transformer winding lines. 4. How many splices can be expected in a standard 66 meter roll?Each roll contains a maximum of one splice. Splice position is not fixed, but total splice count per roll is strictly controlled to one or fewer. 5. What is the lead time for custom width orders?Custom width production typically ships within 15 to 20 working days after order confirmation. Minimum order quantity for custom widths depends on the specific dimension and can be provided upon request.