Find Quality PTFE Film from Leading Suppliers and Manufacturers in China

Kaxite PTFE Film: The Ultimate High-Performance Fluoropolymer Solution for Demanding Applications In the realm of high-performance materials, few substances offer the unique combination of properties found in PTFE Film. Polytetrafluoroethylene, commonly known by its trademark Teflon® or simply PTFE, represents the pinnacle of fluoropolymer engineering. At Kaxite, we specialize in manufacturing advanced PTFE films that meet and exceed the rigorous demands of industries ranging from aerospace and electronics to medical devices and industrial filtration. Our commitment to precision, purity, and performance ensures that Kaxite PTFE Film is the material of choice for engineers and designers seeking reliable, durable, and chemically inert solutions. Understanding the fundamental characteristics of PTFE is key to appreciating its value. This fully fluorinated polymer boasts an exceptional set of innate properties, which our proprietary manufacturing processes at Kaxite enhance and tailor for specific applications. **Core Properties of Kaxite PTFE Film:** * **Exceptional Chemical Resistance:** Inert to virtually all industrial chemicals and solvents, making it ideal for aggressive environments. * **Ultra-High Temperature Stability:** Performs continuously from -270°C to +260°C (-454°F to +500°F) without loss of properties. * **Superb Dielectric Strength:** An excellent electrical insulator with a high dielectric strength, even at high temperatures and frequencies. * **Low Coefficient of Friction:** Possesses the lowest coefficient of friction of any known solid material, providing non-stick and self-lubricating characteristics. * **Excellent Weatherability:** Completely resistant to UV radiation and environmental aging, ensuring long-term outdoor performance. * **Biocompatibility:** Meets USP Class VI standards, making certain grades suitable for medical applications. * **Non-Flammability:** Inherently flame-resistant and will not support combustion. * **Low Permittivity & Dissipation Factor:** Ideal for high-frequency electronic applications. ### Kaxite PTFE Film Product Parameters & Specifications Our product line encompasses various types of PTFE films, each engineered for distinct performance criteria. Below is a detailed breakdown of our standard offerings. #### Kaxite Skived PTFE Film Produced by precision skiving from a sintered billet, this film offers superior mechanical strength and dimensional stability. It is available in a wide range of thicknesses and is often used for gaskets, seals, and insulating washers. **Typical Specifications:** | Property | Test Method | Unit | Value Range / Typical | | :--- | :--- | :--- | :--- | | **Thickness** | ASTM D374 | μm (mil) | 25 – 3000 (1 – 118) | | **Tensile Strength** | ASTM D882 | MPa (psi) | 20 – 35 (2900 – 5000) | | **Elongation at Break** | ASTM D882 | % | 100 – 400 | | **Dielectric Strength** | ASTM D149 | kV/mm (V/mil) | 40 – 200 (1000 – 5000) | | **Specific Gravity** | ASTM D792 | - | 2.15 – 2.20 | | **Continuous Service Temp** | - | °C (°F) | -240 to +260 (-400 to +500) | | **Coefficient of Friction (Dynamic)** | ASTM D1894 | - | 0.05 – 0.08 | #### Kaxite Cast PTFE Film Manufactured through a casting process, this film is characterized by its exceptional smoothness, uniformity, and clarity. It is perfect for applications requiring minimal thickness variation and high-purity surfaces. **Typical Specifications:** | Property | Test Method | Unit | Value Range / Typical | | :--- | :--- | :--- | :--- | | **Thickness** | ASTM D374 | μm (mil) | 12.5 – 100 (0.5 – 4) | | **Tensile Strength** | ASTM D882 | MPa (psi) | 15 – 25 (2200 – 3600) | | **Elongation at Break** | ASTM D882 | % | 150 – 350 | | **Dielectric Strength** | ASTM D149 | kV/mm (V/mil) | 100 – 250 (2500 – 6350) | | **Specific Gravity** | - | - | 2.15 – 2.18 | | **Surface Smoothness** | Profilometer | Ra, μm | < 0.2 | | **Light Transmission** | - | % | > 95 (for clear grades) | #### Kaxite Expanded PTFE (ePTFE) Membrane This is a highly versatile form of PTFE film created by expanding PTFE to create a microporous structure. Kaxite ePTFE membranes are breathable, waterproof, and chemically inert, finding uses in filtration, medical textiles, and venting applications. **Key Parameters:** * **Porosity:** Ranging from 70% to 95%. * **Pore Size:** Can be engineered from 0.1 μm to 10.0 μm. * **Gurley Number:** Measured in seconds, indicating air permeability. * **Water Entry Pressure:** The pressure required for water to penetrate, indicating waterproofness. * **Basis Weight:** Measured in g/m². ### Frequently Asked Questions (FAQ) About PTFE Film **What are the main differences between skived, cast, and expanded PTFE film?** Skived PTFE film is mechanically shaved from a solid block, offering high strength and is ideal for mechanical parts like seals and gaskets. Cast PTFE film is formed from a dispersion, resulting in a very smooth, uniform film excellent for electrical insulation and release liners. Expanded PTFE (ePTFE) is stretched to create a microporous membrane, providing unique properties like breathability and filtration, used in medical garments, filters, and vents. **Can Kaxite PTFE Film be used for food contact applications?** Yes, specific grades of Kaxite PTFE Film are manufactured using FDA-compliant raw materials and processes, making them suitable for food contact applications. It is crucial to specify this requirement when ordering to ensure you receive the correct, certified material for your application. **How does PTFE film handle extreme temperatures compared to other plastics?** PTFE film operates effectively in a temperature range from -270°C to +260°C continuously, with short-term peaks up to 300°C possible. This far exceeds the capability of most common engineering plastics (like PVC, PET, or Nylon) and many other fluoropolymers. Its properties remain stable across this entire range, unlike materials that become brittle when cold or soften when hot. **Is PTFE film safe? I've heard concerns about PFOA.** Modern manufacturing of PTFE, including Kaxite's processes, no longer uses PFOA (Perfluorooctanoic Acid) as a processing aid. Kaxite PTFE Film is produced using PFOA-free technology, resulting in a chemically inert, stable, and safe final product. The film itself is non-toxic and biologically inert. **Can PTFE film be bonded, laminated, or printed on?** Due to its extremely non-stick and low surface energy nature, untreated PTFE film is very difficult to bond. However, Kaxite offers films that have been surface-treated (e.g., via sodium etching or plasma treatment) to promote adhesion for bonding, printing, or lamination with other materials. It is essential to use adhesives and inks specifically formulated for fluoropolymers. **What are the primary electrical applications for PTFE film?** Thanks to its excellent dielectric properties, stability across a wide frequency and temperature range, and low dissipation factor, Kaxite PTFE Film is extensively used in high-performance electrical and RF applications. These include insulation for high-voltage cables, capacitors, printed circuit board (PCB) substrates for high-frequency circuits, and coil insulation. **How should PTFE film be stored and handled to maintain its properties?** PTFE film should be stored in a cool, dry, and dark environment, away from direct sunlight and heat sources. It should be kept flat or on a core to avoid creasing. While chemically resistant, it is a soft material and can be scratched or contaminated by rough handling; using clean gloves is recommended for critical applications. **Does Kaxite offer custom formulations or composite materials with PTFE film?** Absolutely. Kaxite provides extensive customization services. We can produce films with fillers (like glass fiber, carbon, or bronze) to enhance wear resistance, thermal conductivity, or compression resistance. We also manufacture composites, such as PTFE film laminated to fabrics, foils, or other substrates to create multi-functional materials tailored to specific customer needs. **What industries most commonly use Kaxite PTFE Film?** Our films serve a diverse set of industries: Aerospace (wire insulation, gaskets), Automotive (fuel systems, transmissions), Electronics (circuitry, semiconductors), Medical (sterile packaging, implantable device components), Industrial (chemical processing seals, conveyor belts), and Filtration (membranes for air and liquid filtration). **How do I select the correct grade and thickness of PTFE film for my project?** Selection depends on the primary function (sealing, insulating, releasing, filtering), environmental factors (chemical exposure, temperature, pressure), and mechanical requirements. Our technical support team at Kaxite is dedicated to assisting with material selection. Providing details about your application's operating conditions is the best first step toward identifying the optimal film solution.