Learn about die cutting release films

Jan 28, 2022

Release film is a material commonly used in thermal transfer printing. The substrate is PET, which is coated with silicone oil, so it is also called silicone oil film. Conventional thickness from 25um to 150um. There are hot and cold tearing and matte surfaces. After anti-static and anti-scratch treatment, the product has a good adsorption and fit release film.
Application of release film: now widely used in packaging, printing, silk screen printing, pad printing, nameplate, membrane switch, flexible circuit, insulating products, circuit board, laser anti-lamination, film for electronics, sealing material, reflective material, waterproof material , Medicine (plaster paper), toilet paper, adhesive products, die-cutting and punching processing and other industries.

Features of release film
Single-sided and double-sided release films are mainly used in FPC as the base material because of their excellent high temperature resistance properties, and a very thin layer of release agent is evenly coated on one or both sides. The surface of the release film is smooth and clean. , Uniform coating, no defects such as wrinkles, particles, bubbles, pinholes, etc. The product has excellent physical properties, small thickness tolerance, and low thermal shrinkage. It is mainly the best isolation material for epoxy resin printed circuit board processing. , with high tensile strength and tear strength.

Release film properties
The physical properties of the release film classified as heat-resistant polyolefin have the following characteristics:
1. High transparency (light transmittance above 90%);
2. Excellent heat resistance (melting point 230~240℃);
3. Excellent electrical characteristics; the practice of release film;
4. Drug resistance;
5. Low density (0.83g/cc);
6. Good formability;