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Three-Layer Composite Release Film

Release film is also known as isolation membrane or separate film. In the production of FPC (Flexible Printed Circuit), it plays the role of isolation, padding, protection and easy peeling. This product is a three-layer composite PET film (release liner). It adopts olefin copolymer composites whose surface is not coated with any release agent. This eliminates the danger of the coated silicon release liner migrating to the circuit board. Three-layer composite release film features excellent mechanical properties, small thickness tolerance, heat resistance, dimensional stability and flame retardant. It has become a superior film material for the production process of multilayer boards. This composite PET film is also an ideal isolation material used for hard board (PCB-printed circuit board), FPC, CCL (Copper Clad Laminate), etc.

Features of Release Film
1. This insulation film is without silicone, so it does not pollute circuit board.
2. Three-layer release film has good release property and high temperature resistance.
3. With smooth surface, this composite PET film features low shrinkage, high tensile strength, tear strength and chemical inertness.

Specifications of Composite Release Liner (3 Layer)
Structure: Three-tier or three-layer
Thickness: 40 um to 120 um
High Temperature Tolerance: surface layer temperature: 200℃, middle layer temperature: 190℃
Type: IF-RF900 Composite PET Film

Parameters of Three-Layer Composite Release Film

Properties ASTM Test Condition Unit Typical Values
Physical Properties
Density D-792 23℃ g/cm3 0.98
Mechanical Properties
Tensile Strength D-638 10 mm / min MPa 23
Elongation at Break D-638 10 mm / min % 200
Flexural Strength D-790 2 mm / min MPa 26
Flexural Modulus D-790 2 mm / min MPa 650
Thermal Properties
Vicat Softening Temperature D1525 1 kg, 120℃/h 150
Melting Temperature of Composite PET Film MCI - 190 (Middle Layer)
200 (Surface Layer)

Note: Typical values are the average data from laboratory. They are only for use reference and are not the standards for products.

Shanghai Info New Material Technology Co., Ltd. is a high-tech enterprise engaged in research and development, sale and technical service of release films or release liners. Oriented by customers’ demands, our company is also engaged in producing various high-performance and functional modified plastic particles, sheets and film products. With strong R & D strength, we focus on the development and application of polyolefin (PP/PE), nylon (PA) modified products and composite materials. Our three-layer composite PET films have been exported to mainland, Hong Kong, Macao and Taiwan regions, North America, South America, Western Europe, Eastern Europe, East Asia, Southeast Asia, Middle East, Africa, Oceania, etc.
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