Clarifying the Differences Between Raw PET Resin, Thermoformed Trays, and High-Performance BOPET Film
Product Overview
If you are sourcing materials, you have probably asked yourself: What is BOPET film used for, and how is it different from regular PET? Many buyers get confused when they see the same “PET” abbreviation used for water bottles, food trays, and thin flexible films. This confusion often leads to ordering the wrong material. The truth is, while the base polymer is the same, the way it is processed makes BOPET a completely different beast.
Not All PET is Created Equal
Standard PET (often called APET or CPET) is thick and rigid. It is perfect for making 3D shapes like bottles and trays.
BOPET, on the other hand, is designed for flat, flexible applications. It starts as a thick sheet, but is then heated and stretched in two directions. This process turns it into a thin, incredibly strong, and clear film.
What is BOPET Film Used For?
Because of its unique processing, BOPET is used for high-end applications that standard PET simply cannot handle:
- Flexible Packaging: It acts as the outer layer of laminates, providing puncture resistance and a brilliant surface for printing.
- Electrical Insulation: Its high dielectric strength makes it essential for battery wraps and motor slot liners.
- Protective Liners: Used as a carrier film in tapes and adhesives because it releases cleanly.
How to Avoid Sourcing Mistakes
A common mistake is ordering standard PET sheet when you actually need BOPET film for a flexible application. Standard PET will crack and tear. BOPET will bend and hold its shape. Always specify “Biaxially Oriented” when you need high tensile strength and flexibility.
Technical Characteristics
The following values represent the typical capabilities of our BOPET film:
- 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%
- 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 help buyers navigate material selection to avoid costly production errors. If you need a reliable source for clear polyester film, we offer factory-direct pricing and custom slitting for your specific application.
Contact us today for a factory quote, technical data, or a sample of BOPET Film.
