quality Transformer Insulation Tape & Fabric Insulation Tape factory

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.  

Introduction:Choosing the right insulation tape is critical for the safety and longevity of electrical components. As a professional manufacturer specializing in industrial tapes, we often encounter the question: What is the difference between Polyester (PET) tape and PVC tape? While both are popular choices in the electrical and electronics industries, they have distinct properties that make them suitable for different applications. Below is a detailed technical comparison of PET (Polyester) and PVC insulation tapes. 1. Material Composition (Base Film) Polyester (PET) Tape:This tape uses a Polyester film as its backing material. Polyester film is known for its exceptional mechanical strength, high transparency, and excellent barrier properties. It is lightweight, non-toxic, and chemically stable. PET film does not dissolve in water, alcohol, or gasoline and offers low gas and moisture permeability. It also provides good resistance to diluted acids (hydrochloric, sulfuric, nitric) and alkalis at room temperature, making it stable against various salts. PVC Tape:This tape uses Polyvinyl Chloride as its backing. PVC can be categorized into rigid and flexible types.Rigid PVC (without plasticizers) offers good flexibility, is easy to mold, non-toxic, and has a long shelf life.Flexible PVC (contains plasticizers) is softer but may become brittle over time as plasticizers migrate, potentially shortening its lifespan. 2. Physical and Chemical Properties PET Tape Features: High Tensile Strength: PET tape can withstand significant mechanical stress without breaking or tearing, making it ideal for applications requiring robust anchoring. Chemical Resistance: It resists a wide range of chemicals, including solvents and oils, ensuring long-term reliability in harsh environments. Weather Resistance: PET film offers excellent resistance to UV light and moisture, maintaining stable performance even in outdoor or high-humidity conditions. PVC Tape Features: Abrasion Resistance: PVC tape is durable and resistant to wear and tear, protecting cables from physical damage. Conformability & Ease of Use: It is soft and highly conformable, making it easy to wrap around irregular shapes (like wire harnesses). It often features a "tear-by-hand" capability, allowing for quick application without tools. Cost-Effective: PVC tape is generally more economical for general-purpose applications. 3. Primary Application Scenarios PET Tape Applications:Thanks to its high strength and chemical resistance, PET tape is widely used in electronics manufacturing , automotive , and construction . It is the preferred choice for applications demanding thinness, high dielectric strength, and resistance to puncture. PVC Tape Applications:PVC tape is the standard for general electrical insulation, cable harnessing, and color-coding phases in commercial and industrial settings. Its flexibility makes it perfect for wrapping tightly around cables and connectors. 4. Environmental Considerations PET Tape: Polyester film is considered a more environmentally friendly option. It is recyclable and typically free from halogens, producing fewer toxic fumes when incinerated. PVC Tape: While highly functional, traditional PVC tape contains chlorine. During production or disposal (incineration), it can potentially release harmful substances if not managed properly. We always recommend sourcing PVC tapes from manufacturers that adhere to RoHS and strict environmental safety standards. ConclusionBoth PET and PVC tapes have their place in the industrial world. Choose PET tape when you need high mechanical strength, chemical resistance, and thinness for demanding electronic or automotive applications. Choose PVC tape for its flexibility, abrasion resistance, and cost-effectiveness in everyday electrical insulation and harnessing.

Product Name: High Temperature Polyimide Film Tape (Kapton Tape) Product Overview:Our Polyimide Tape is manufactured using a polyimide film (commonly known as Kapton) as the backing material, coated with a high-performance silicone pressure-sensitive adhesive. This combination delivers exceptional resistance to extreme temperatures, acids, alkalis, and solvents. As an H-class insulating material, it is the premier choice for demanding electrical and electronic applications. Featuring high precision coating, the tape ensures a defect-free surface without scratches or adhesive stringing. Its excellent die-cutting properties make it ideal for custom shapes and lamination processes. Key Features: Base Material: Polyimide Film Adhesive: Silicone-based Thermal Class: H-class (withstands extreme high and low temperatures) Chemical Resistance: Excellent resistance to acids, alkalis, and industrial solvents. Processability: Great shear strength, easy to die-cut, and peel without leaving residue. Compliance: Meets ROHS and halogen-free environmental standards. Applications: Electronics & PCB Manufacturing: Wave Soldering Protection: Ideal for masking gold fingers and PCB contacts during wave soldering. SMT Protection: Withstands high temperatures during surface mount technology processes. Electronic Component Insulation: Used for insulating electronic switches, relays, and transformers. Electrical Insulation: Motor & Coil Insulation: Used for H-class motor insulation, coil end binding, and wire wrapping. Capacitor & Cable Wrapping: Provides reliable insulation for capacitors and wire harnesses in high-temperature environments. Industrial & Battery Applications: Lithium-Ion Batteries: Specifically utilized for fixing and insulating the positive and negative tabs (ears) of lithium batteries. High-Temperature Masking: Ideal for surface protection during high-temperature painting, sandblasting, or powder coating. It leaves no adhesive residue after the baking process. Why Choose Our Tape?With its high tensile strength, excellent chemical resistance, and clean removal properties, our Polyimide tape ensures the integrity of your components in the most challenging thermal environments.

 Selecting the correct polyester film tape is crucial for ensuring it meets the specific demands of your application. With various types available, understanding the key specifications can help you make a cost-effective and performance-driven decision. Below are the essential factors to evaluate before purchasing.    1. Define the Application The first step is understanding exactly what the tape will be used for. Polyester tapes have diverse applications across different industries. For instance, some are designed for general-purpose packaging and bundling, while others are engineered for demanding tasks like PCB masking, electrical insulation, or splicing in industrial processes. Identifying the primary use will narrow down your options immediately.    2. Analyze the Material Construction While most polyester tapes use a PET (Polyethylene Terephthalate) film as the backing material, variations exist.    Film Quality: The thickness and grade of the PET film impact the tape's durability and flexibility.    Coatings & Treatments: Some tapes undergo special treatments (such as corona treatment) or have specific coatings to enhance properties like adhesion, heat resistance, or printability.    Composition: Determine if the tape needs to be flame retardant, anti-static, or resistant to specific chemicals, as this will dictate the required additives or material composition.    3. Evaluate Adhesive Strength Adhesion is a primary performance indicator. The tack and holding power are determined by the type and formulation of the adhesive.    Adhesive Types: Common adhesives include acrylic, rubber, and silicone-based options, each offering different levels of tack, shear resistance, and temperature tolerance.    Stickiness Level: It is vital to choose a tape with the appropriate adhesive strength—strong enough to bond securely but not so aggressive that it leaves residue or damages the surface upon removal.    4. Determine the Correct Specifications The physical dimensions of the tape must align with your project requirements.    Width & Length: These are typically determined by the surface area to be covered and the amount of force needed to hold the materials in place.    Thickness: The total thickness of the tape (backing + adhesive) affects its conformability and durability. A thicker tape may offer more protection, while a thinner one might be better for tight spaces and flexibility.    5. Account for Environmental Conditions The operational environment is critical to the tape's performance and longevity.    Temperature: Will the tape be exposed to high heat? If so, you may need a high-temperature polyester tape with a silicone adhesive.    Moisture & Humidity: For damp or outdoor environments, the tape must have good moisture resistance.    Chemical Exposure: Consider if the tape will come into contact with oils, solvents, or other corrosive substances that could degrade the adhesive or backing.    6. Balance Cost and Performance Finally, weigh the product's cost against its benefits.    Value over Price: The most expensive option isn't always the best. Assess the total cost relative to the tape's lifespan and the reliability it provides for your specific task.    Budget Alignment: Choose a tape that meets all performance requirements without exceeding your project's budget. An informed choice balances technical specs with cost-effectiveness.   By carefully considering these factors—from application and material to environment and budget—you can select the ideal polyester adhesive tape that ensures efficiency, safety, and long-term reliability for your project.