​TOP TECH SUBSTRATES CO., LTD

​TOP TECH SUBSTRATES CO., LTD

Introduction to OCA Release Film – The Foundation of Optical Bonding

2026 04/11

Introduction to OCA Release Film – The Foundation of Optical Bonding
OCA Release Film is a high-performance optical-grade PET film designed exclusively for protecting and supporting Optically Clear Adhesive (OCA) during production, storage, and lamination. Composed of a transparent polyester base coated with a uniform silicone release layer, it serves as both a protective liner and a process carrier. Key features include ultra-high light transmittance (>91%), low haze (<1%), and exceptional surface flatness. Produced in class-1000 cleanrooms, it ensures zero dust, pinholes, or defects. With controlled release force (light: 10–20g/in; heavy: 40–60g/in), it enables stable peeling without residue. Widely used in smartphones, tablets, and automotive displays, OCA Release Film guarantees flawless optical bonding, high production yields, and long-term adhesive stability.
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