Types and properties of protective films

In modern industrial production, various material surfaces need to be effectively protected and treated. Protective film, as an important auxiliary product, is widely used in industries such as electronics, automobiles, and construction. The main function of protective film is to prevent scratches, wear, and corrosion on the surface of the product, maintain its appearance smoothness, and provide additional protective layer during transportation and processing. This article will introduce the different types of protective films and their characteristics. Classification by material: 1. PET (polyethylene terephthalate) protective film Features: PET protective film has excellent optical transparency and mechanical strength, strong wear resistance, and is suitable for electronic products such as mobile phone screens and tablets. Application: Commonly used for surface protection of touch screen panels, lenses, glass products, etc. 2. Features of PVC protective film: PVC protective film has low price, good flexibility and adhesion, but poor anti-aging ability. Application: Commonly used in indoor decoration, furniture veneer, and other fields. 3. Characteristics of PE (polyethylene) protective film: PE protective film has excellent anti-static performance and low residue characteristics, and is easy to peel without leaving any traces. Application: Commonly used for dust and scratch prevention during the assembly process of electronic products. 4. Characteristics of TPU (Thermoplastic Polyurethane Elastomer Rubber) Protective Film: TPU protective film has excellent elasticity and durability, suitable for application environments that require high pressure and bending. Application: Commonly used in smartphones, sports equipment, and other occasions. Classified by function: 1. Characteristics of ordinary protective film: providing basic scratch and stain resistance, suitable for initial product packaging and transportation protection. Application: For primary packaging of consumer electronics products. 2. High level scratch resistant protective film features: it has a stronger hardness level and can withstand more severe scratches and impacts. Application: Screen saver for high-end smartphones, laptops, and other devices. 3. Characteristics of optical grade protective film: With extremely high transparency and clear image quality, it is suitable for high-precision protection of display devices. Application: Visual devices such as televisions, monitors, projectors, etc. 4. Features of anti fingerprint protective film: coated with a special oil repellent coating, it can effectively reduce finger marks and keep the surface clean. Application: Electronic products that require high touch sensitivity, such as smartphones and tablets. 5. Characteristics of conductive protective film: With uniformly distributed small particles or grid structure, it ensures good conductivity. Application: Mainly used as a temporary substitute for fixture fixation or maintenance in touch screen manufacturing. In addition to the basic characteristics mentioned above, other performance indicators of the protective film may also involve the following performance parameters: thickness: usually expressed in mils (one thousandth of an inch) or microns (micrometers); Adhesion: affects the adhesion and easy peeling degree of the protective film; Translucency: crucial for display devices, directly related to image quality and brightness; High temperature resistance: adaptable to different working environments and temperature conditions; UV resistance: protects materials from UV damage and extends their service life. The selection of the appropriate type of protective film depends on the specific usage scenario and requirements. Manufacturers need to determine the optimal protection plan based on the characteristics and requirements of the product. With the development of technology and the continuous emergence of new materials, the performance of protective films will be further improved in the future, providing better solutions for various industries.