LED Backlight Custom Reflective Film

1.Substrate Layer (Core Support Layer):Serving as the foundational carrier for the entire reflective film, this layer primarily utilizes optical-grade PET (Polyethylene Terephthalate) material. For certain high-end custom products, alternative options such as composite substrates or bio-based PET may be selected. This layer possesses excellent flexibility, heat resistance, and mechanical strength; its thickness can be customized according to specific needs (typically ranging from 50μm to 350μm). Additionally, it exhibits robust tensile and bending resistance, facilitating subsequent cutting, installation, and module assembly processes.

2.Primer Layer (Adhesion Transition Layer):Situated directly above the substrate layer, this serves as a specialized auxiliary layer. Its primary function is to enhance the adhesion between the substrate layer and the reflective coating, thereby preventing the reflective coating from delaminating. Concurrently, it optimizes the flatness of the coating surface, ensuring the uniformity of the reflected light. The primer material can be customized to complement the specific type of reflective coating being applied. It often employs a gradient coating design to improve interlayer bonding and prevent interfacial haze-a phenomenon typically caused by solvent penetration.

3.Reflective Coating (Core Functional Layer):This constitutes the core layer responsible for enabling the reflective functionality of the LED Backlight Custom Reflective Film. Depending on specific customization requirements, various coating materials and application processes can be selected. Standard customization typically employs a white, high-reflectance coating (incorporating reflective particles such as TiO₂ or barium sulfate) to fulfill basic light reflection requirements. High-end customization (such as for Mini-LED backlighting applications) may utilize multi-layer composite reflective coatings or functional layers containing phosphors;