Aluminum Laminated Film, Width: 400 mm, Length: 7.5 m

Technical Specification:

1. Material Composition:
   • Outer Layer: Nylon (Polyamide, PA).
     • Provides mechanical strength and resistance to punctures.
   • Middle Layer: Aluminum Foil.
     • Acts as a barrier against moisture, oxygen, and light.
   • Inner Layer: Polypropylene (PP) or Cast Polypropylene (CPP).
     • Ensures strong heat-sealing properties for airtight encapsulation.
2. Physical Dimensions:
   • Width: 400 mm.
   • Length: 7.5 m (roll length).
   • Thickness: Typically between 90–120 µm, depending on application requirements.
3. Barrier Properties:
   • Moisture Barrier: Blocks water vapor to protect sensitive battery components.
   • Oxygen Barrier: Prevents oxygen ingress, ensuring long-term stability of battery materials.
   • Light Barrier: Aluminum layer protects against UV and other light sources.
4. Thermal Properties:
   • Heat Resistance: Operates reliably in a range of -20°C to 120°C.
   • Heat-Sealing Temperature: Effective sealing achieved at 170°C to 200°C.
5. Mechanical Properties:
   • Tensile Strength:
     • Nylon outer layer resists tearing during battery assembly.
   • Flexibility:
     • Laminated structure allows bending without delamination or cracking.
6. Chemical Resistance:
   • Inner polypropylene layer resists degradation from electrolytes and other chemicals used in battery cells.
7. Surface Properties:
   • Flat and Smooth Finish:
     • Ensures reliable sealing and prevents leaks.

Applications:

1. Primary Applications:
   • Battery Pouch Cell Packaging:
     • Encapsulates lithium-ion pouch cells to provide a protective, airtight seal.
2. Industries:
   • Battery Manufacturing:
     • Widely used for lithium-ion and solid-state battery production.
   • Electric Vehicles (EVs):
     • Essential for lightweight, high-capacity pouch cell batteries in EV battery packs.
   • Consumer Electronics:
     • Used in batteries for smartphones, tablets, laptops, and power banks.
   • Energy Storage Systems (ESS):
     • Applied in modular and grid-scale energy storage solutions.
3. Advantages for Applications:
   • Excellent Barrier Properties:
     • Protects internal components from environmental degradation, enhancing battery life and safety.
   • Lightweight:
     • Reduces overall weight compared to rigid battery casings, ideal for EVs and portable devices.
   • Thermal Stability:
     • Withstands temperature variations during assembly and operation.
   • Customizable Dimensions:
     • Can be tailored to fit various cell sizes and designs.
4. Specialized Uses:
   • Solid-State Battery Research:
     • Suitable for testing and developing solid-state battery chemistries.
   • Advanced Energy Storage Solutions:
     • Used in high-energy-density batteries for aerospace and defense applications.
   • Prototype and R&D:
     • Supports tailored designs for experimental pouch cell configurations.
5. Challenges and Mitigation:
   • Heat-Sealing Requirements:
     • Improper sealing can lead to leaks or poor encapsulation.
       • Solution: Use calibrated heat-sealing equipment with precise temperature and pressure control.
   • Handling Sensitivity:
     • Scratches or folds can compromise barrier properties.
       • Solution: Handle carefully and store in protective packaging to prevent damage.

Summary:

The Aluminum Laminated Film with dimensions 400 mm width and 7.5 m length is a high-performance material for lithium-ion pouch cell packaging. Its multi-layer construction provides exceptional protection against moisture, oxygen, and light while offering thermal stability and mechanical durability. This lightweight and flexible film is essential for battery manufacturing in electric vehicles, consumer electronics, and energy storage systems.