PET film, also known as polyester film, has excellent physical, mechanical, and optical properties and is widely used in multiple fields. Its types can be classified according to different classification criteria, and the following are some main classification methods and corresponding types:
Classified by production raw materials
PET film can be classified according to the different raw materials used in its production, but it should be noted that it is not common to directly segment PET film according to the production materials (such as PE, PP, PC, ABS, etc.), as these materials are mostly used for other types of films or plastic products. However, PET film itself can be made from a specific polyester material such as polyethylene terephthalate (PET), so the singularity of PET as a raw material is mainly emphasized here.
Classified by production process
1. Single layer PET film: composed of a single layer of PET material, with basic physical and optical properties.
2. Composite PET film: composed of multiple layers of materials, which may include a combination of PET layers and other material layers, such as adhesive layers, functional coatings, etc., to enhance the performance of the film or meet specific application requirements.
Classified by usage characteristics
1. Ordinary PET film: It has basic properties such as transparency, glossiness, and wear resistance, and is suitable for general packaging, decoration, and other fields.
2. Functional PET film: Based on ordinary PET film, special coatings or processing techniques are added to give it specific functions such as anti-static, anti fog, flame retardant, high temperature resistance, etc., suitable for high-end fields such as electronics, electrical, optics, etc.
Classified by specific purposes
1. PET film for packaging: It has good transparency and barrier properties, and is widely used for packaging products such as food, medicine, cosmetics, etc.
2. Electronic PET film: It has excellent electrical insulation performance and dimensional stability, and is suitable for the manufacturing of electronic products such as capacitors, wires and cables, insulation materials, etc.
3. Optical PET film: It has high transparency, low haze, and good optical properties, and is used to make optical films, polarizers, liquid crystal displays, and other optical products.
4. Decorative PET film: with multiple colors and patterns, it can be used in decoration, advertising, signage and other fields.
Classified by special performance
1. High temperature resistant PET film: After special treatment, it has high heat resistance and can be used for applications in high-temperature environments, such as the internal insulation layer of household appliances such as ovens and microwaves.
2. Heat shrinkable PET film: It can produce significant shrinkage effect after heating, tightly wrap items, improve packaging sealing and aesthetics, and is commonly used for packaging of food, beverage and other products.
In summary, there are various types of PET films that can be classified into multiple types according to different classification criteria to meet the needs of different fields and applications.
