In the realm of precision manufacturing, there exists an “invisible guardian” that consistently performs its duty behind the scenes—release protection film. This thin film material, coated with a special release agent, adheres firmly to the surface of the protected object while allowing for effortless removal when needed. It has become an indispensable auxiliary material in industries such as electronics, automotive, and medical.

The core technology of release protection film lies in the coating process of the release layer. Currently, mainstream silicone release agents are uniformly applied to substrates like PET or PE via gravure coating or comma blade coating. After high-temperature curing, they form a stable release layer. Controlling release force is critical—ranging from ultra-light release at 5g/25mm to heavy release at 500g/25mm—requiring precise matching to the adhesive properties of the protected material.

In electronics manufacturing, release protection films serve as essential safeguards during touchscreen and flexible circuit board production, effectively preventing scratches and contamination. In automotive painting processes, they shield window and body paint surfaces from overspray. Medical sterile dressing packaging relies on environmentally friendly release agents with low migration properties to ensure product safety.

As the industry evolves, functional release protection films are emerging as a new trend. Specialized acid- and alkali-resistant substrates meet the demands of new energy battery production, while biodegradable PLA substrates respond to environmental initiatives. Intelligent QR code release films enable traceability management throughout production processes, driving the evolution of release protection films from basic protective functions toward diversified applications.