Material manufacturers analyze the classification of protective film and related application scope-technical knowledge
Material manufacturers analyze the classification of protective film and related application scope Release time: 2021-08-27 Click: 2632 The classification of protective film, protective film can be classified according to protective film substrate, protective film market, protective film properties, protective film types, etc. . 1. Classification of protective film 1. Classification by substrate: PE substrate, PVC substrate, PET substrate, OPP substrate, etc. 2. Classification by protective film market: (1) Traditional protective film: such as galvanized steel protective film, Color steel plate protective film, glass or plastic sheet protective film, etc. Most of these traditional protective films are low value-added applications with low performance and crystallinity requirements, and most of them are gelatinized protective films. (2) Protective film for high-tech electronics industry: such as dry film or wafer grinding process. This kind of protective film usually needs to be produced in a clean room and has very strict requirements on crystal points. Only a few manufacturers have sufficient technical capabilities to meet these requirements. (3) Flat panel display protective film: The application range includes flat panel displays, TFT-LCD modules, backlight modules, glass substrates and various optical components, such as polarizers, color filters, etc. Viscosity and crystallization point control, which is a high value-added and high-tech application. 3. According to properties: adhesive film, self-adhesive film (1) Self-adhesive film is usually produced by CO extrusion, and its self-adhesive layer is mainly EVA, ultra-low density polyethylene or polyolefin plastic resin. This structure has gradually become the mainstream of the market because it has more advantages than adhesive films, such as no residual glue, providing stable adhesion, reducing user costs and creating higher profits for protective film manufacturers. (2) There are solvent-based rubber adhesives, solvent-based acrylic adhesives, water-based acrylic adhesives and silicone adhesives. Among them, the water-based acrylic adhesive is the most widely used product, it can easily adjust the adhesive, and has good transparency and weather resistance. The characteristics of acrylic adhesive protective film: (1) Emulsion acrylic (water-based acrylic): the fluidity is relatively poor, and the final adhesion time is relatively long. The viscosity of the low-grade protective film will increase with the passage of time. It is an environmentally friendly material The weather resistance is good and can tear the film quickly. (2) Solvent-based acrylic: It is difficult to meet the high requirements of environmental standards, and other characteristics are similar to emulsion-based acrylic. The scope of application of the protective film The protective film can be applied to the following areas: metal product surface, coated metal product surface, plastic product surface, automotive product surface, electronic product surface, label product surface, profile product surface and other product surfaces.