PET Film

Biaxially Oriented Polyester Film (Diafoil®)

Diafoil® is the brand of Biaxially Oriented Polyester Film. It boasts a comprehensive lineup of polyester film, ranging from a few microns to 350 microns in thickness, and features well-balanced characteristics such as mechanical properties and heat resistance. 

We integrate three technologies of Mitsubishi Chemicals, namely, excellent and proprietary material technologies, film-forming technology cultivated over many years, and surface treatment technology with unique coating, and develop new markets with customers to become a leading global company.

With the help of a highly skilled polymer and engineering team, our polyester film operations utilize the latest information and technology for quality improvement and process enhancement. We always put at the fore our R&D activities to innovate our sophisticated products. This way, our products can meet various needs of our customers from across the world. 

Applications

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  Flat Panel Display

  Polyester film is excellent in terms of transparency, smoothness, and heat resistance. The product is widely used as the base for optical sheets of LCD backlights. Other applications include optical filter material for PDP and protective/mold release films for LCD components.
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  Electric / Electronic Parts and Components

  Diafoil® is widely known for its applications in electric/electronic parts and components such as wires, cables, motor insulation, touch panels and flexible boards. The product also comes with excellent electrical and physical properties including heat resistance and slip characteristics as well as high insulation, dimensional stability and high transparency.
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  General Industrial / Special Products

  Ranging from a few microns to 350 microns in thickness and with excellent properties such as heat resistance, dimensional stability and chemical resistance, Diafoil® is an essential product used in various industries. The product features applications such as transfer foil, mold release film, cards, labels, sheets and mold release film for ceramic capacitors.
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  Packaging Material

  Packaging materials require UV-shielding, gas barrier, moisture/waterproof, heat resistance, printing, and many others. We offer safe polyester films for vapor deposition packaging as well as various cover/cap/lid materials.