Exploring the Definition, Brand Names, and Applications of Biaxially Oriented Polyethylene Terephthalate
Product Overview
BOPET (Biaxially Oriented Polyethylene Terephthalate) is a cornerstone material in modern manufacturing. It is created by stretching PET resin in two directions, which aligns the polymer chains and unlocks exceptional physical characteristics. Because of its widespread use, BOPET is often referred to by famous brand names such as Mylar, Melinex, and Hostaphan. Understanding the core BOPET Film Properties is essential for engineers and buyers who need a reliable, high-performance substrate for packaging, electronics, and industrial applications.
Key Physical and Chemical Properties
The unique molecular structure of BOPET gives it a combination of properties that few other films can match:
- High Clarity and Flexibility: The film is highly transparent and flexible, making it ideal for visual inspection and tight wrapping.
- Excellent Dimensional Stability: Unlike many plastics, BOPET retains its shape under heat and tension. This makes it perfect for precision processes.
- Strong Barrier Performance: BOPET provides an excellent base for barrier laminates, protecting products from moisture and oxygen.
- High Tensile Strength: It offers superior mechanical toughness, allowing it to be used in very thin gauges without breaking.
How BOPET Compares to Other Films
When selecting materials, it helps to compare BOPET Film Properties against alternatives:
- BOPET vs BOPP: BOPP offers great moisture resistance, but BOPET provides far superior dimensional stability and temperature resistance.
- BOPET vs CPP and PE: CPP and PE are excellent for heat sealing, but they lack the tensile strength and structural integrity of BOPET.
Versatile Applications
The unique properties of BOPET open the door to highly specialized uses:
- Lithium-Ion Batteries (LIBs): BOPET is a critical electrical insulator in battery packs, ensuring safety in EVs.
- Modern Packaging: It is the backbone of flexible packaging and high-barrier laminates for food and medical products.
- Industrial Protection: It is used for window and automotive glass protection, hot-stamping release, and laminates in the woodworking industry.
Technical Characteristics
The following values represent the typical properties of our BOPET film range:
- Material: Biaxially Oriented Polyethylene Terephthalate
- Thickness Range: 12 μm up to 500 μm
- Tensile Strength: MD 133 to 271 MPa
- Thermal Shrinkage at 150°C, 30min: MD 0.9% to 1.5%
- Density: 1.4 g/cm³
- Breakdown Voltage (Insulation Grades): up to 39.6 kV
- Certifications: RoHS, REACH, UL746B (RTI 105°C)
Why Choose Jinlu Film as Your Supplier
Jinlu Film is a leading BOPET Film Manufacturer and Factory. We provide high-quality film that matches the performance of premium brands like Mylar and Melinex. Whether you need BOPET for battery insulation, flexible packaging, or industrial laminating, we offer factory-direct pricing and consistent quality.
Contact us today for a factory quote, technical data, or a sample of BOPET Film.
