Polyester Film and Polyester Fiber Nonwoven Composite Material (DMD-F6641) The polyester film and polyester fiber nonwoven composite material, designated as DMD-F6641, is a high-performance engineered material that combines the structural integrity of polyester film with the porous, flexible characteristics of polyester fiber nonwoven fabric. This composite is widely used in electrical insulation, industrial reinforcement, and other applications requiring durability, thermal resistance, and dimensional stability. Structure and Composition DMD-F6641 consists of three primary layers: 1. Polyester Film (PET Film): A biaxially oriented polyethylene terephthalate (PET) film forms the core layer, providing excellent mechanical strength, dielectric properties, and resistance to moisture, chemicals, and high temperatures. 2. Polyester Fiber Nonwoven Fabric: On both sides of the PET film, a nonwoven polyester fiber mat is bonded, enhancing flexibility, tear resistance, and surface adhesion for coatings or laminations. 3. Adhesive Bonding: A high-temperature-resistant adhesive securely bonds the layers, ensuring structural integrity under thermal and mechanical stress. Key Properties - Electrical Insulation: The PET film offers high dielectric strength, making DMD-F6641 suitable for motor and transformer insulation. - Thermal Stability: With a temperature resistance range of -40°C to 155°C, the material performs well in harsh environments. - Mechanical Strength: The composite exhibits high tensile strength, puncture resistance, and dimensional stability. - Chemical Resistance: Resistant to oils, solvents, and weak acids, ensuring longevity in industrial applications. - Lightweight and Flexible: The nonwoven layers improve flexibility without compromising rigidity. Applications - Electrical Insulation: Used in motors, generators, transformers, and wire wrapping due to its dielectric properties. - Industrial Reinforcement: Applied in gaskets, diaphragms, and composite backing materials. - Automotive Components: Utilized in insulation for wiring harnesses and battery separators. - Packaging and Construction: Serves as a moisture barrier or structural reinforcement in specialty applications. Advantages Over Alternatives Compared to pure PET films or nonwoven fabrics alone, DMD-F6641 offers a balanced combination of rigidity and flexibility, superior bonding strength, and enhanced resistance to delamination. Its layered structure ensures optimal performance in demanding environments where single-material solutions may fail. In summary, DMD-F6641 is a versatile composite material that leverages the strengths of polyester film and nonwoven fabric, making it indispensable in electrical, industrial, and automotive sectors. Its durability, thermal resistance, and adaptability underscore its value in high-performance applications.