BOPET Film Stretching Process

In BOPET production, the cast polyester sheet is stretched first along the machine direction and then across the width. Both stretching steps happen under controlled heat and are followed by heat setting. The sequence is what gives the film its strength and clarity.

The Science of Strength: Inside the BOPET Film Stretching Process

News / Jinlu Film

How Biaxial Orientation and Heat Setting Transform Basic Resin into High-Performance Polyester Film Product Overview When engineers compare standard PET to BOPET, the difference in performance is night and day. Standard PET is brittle and lacks tensile strength, while BOPET is incredibly tough, optically clear, and dimensionally stable. The secret behind this transformation lies entirely

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BOPET Film Stretching Process

The Science of Strength: Inside the BOPET Film Stretching Process

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