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05
2021
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The inherent characteristics of protective films and the distinctions among their types
When classified by their intended use, protective films can be effectively divided into distinct types. Today, “protective film” has become a generic term for screen protection, and its applications have diversified: originally designed to provide high-definition, scratch-resistant protection, it has now evolved into a range of functional films.
When classified by their intended use, protective films can be effectively divided into distinct types. Today, “protective film” has become a generic term for screen protection, and its applications have diversified: originally designed to provide high-definition, scratch-resistant protection, it has now evolved into multifunctional films.
During application, the adhesive layer of the protective film must achieve precise contact with the surface of the substrate and then flow as much as possible into the microscopic irregularities on that surface. This effectively increases the effective contact area, enhancing the adhesive’s resistance to delamination; consequently, the higher the peel rate, the greater the peel strength of the pressure-sensitive adhesive.
Functionally, protective films create an outer layer that shields physical objects. Today’s specialized protective films include AG matte anti-reflective films, privacy filters, AR anti-glare films, smartphone mirror films, and high-definition scratch-resistant films, among others.
PVC protective films are characterized by their soft texture and easy application; however, they suffer from poor light transmission due to their relatively thick material, which can make the screen appear hazy. Additionally, after removal, they often leave behind adhesive residue on the screen.
PVC protective films, after a series of improvements, have effectively addressed the previous issues of bulkiness and poor light transmission. However, this material lacks scratch resistance, and noticeable scratches will appear on the film after a period of use.
PET protective films rely on electrostatic adhesion, which can make them prone to peeling and bubbling during use. However, even if they do come loose, a quick rinse in clean water allows for reuse. Made from PET material, these protective films feature meticulous craftsmanship and elegant packaging.
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