PET release film are commonly used in heat transfer printing. The substrate is PET, which is coated with silicone oil and is also known as silicone oil film. The characteristic of PET reflective film is that it has excellent optical properties, smooth and clean surface, good thermal stability, low shrinkage rate, and light aging resistance.

With the development of market demand, the demand for PET film and PET release film in industrial production is increasing. There are more and more domestic companies producing PET films and PET release films, followed by a transparent market situation. I won't say much about PET film here, after all, it is not a special requirement for use. Domestic technology basically meets conventional uses, and the quality difference is not significant.

In fact, PET release films are basically industrial consumables and rarely end up in products. Common uses include the following:

1、 Tape casting technology for polymer materials, such as microelectronic components.

2、 The substrate for the label and tape industry.

3、 The application of lamination technology in various multi-layer printed circuit board industries.

4、 Production and application of covering film and pure adhesive film.

5、 PCB/PCL application.

6、 Application in the optoelectronic die-cutting and punching industry.

From the different processes, we can see that the quality requirements for PET release films vary in various situations. For example, the requirement for PET release films in ordinary die cutting and punching is uniform thickness and stable peeling force. The optoelectronic industry has added requirements for transparency and temperature resistance on the basis of stripping strength. Some polymer materials also need to consider the corrosion resistance of chemical reagents, the stability of silicone oil, and the non reaction with other chemical products while maintaining temperature resistance.

That's all for the purpose and quality requirements of PET release film. It is precisely because the process varies from industry to industry that the quality requirements for PET release film also vary. Ordinary release films only require ordinary PET films, while optical grade PET films are used as substrates in the optoelectronic industry. The coating process is much more precise than ordinary release film coating, and the requirements for equipment are also higher. Thus, the price of optical grade PET release films is also higher than that of ordinary ones.The price is much higher. During the procurement process, all business friends must first understand their own manufacturing processes and order suitable products according to their requirements, rather than just demanding the best quality, which can lead to unnecessary waste.