Multilayer strippable locomotive glass anti-graffiti adhesion film

Abstract

The invention relates to a multilayer strippable locomotive glass anti-graffiti adhesion film, which has 17 layers, has the total thickness of 17 MIL, and comprises four layers of anti-graffiti filmswith a thickness of 4 MIL, and a PC base material with an inner surface coated with a single-component acrylate pressure-sensitive adhesive, wherein the upper three layers in each layer of the anti-graffiti film comprise optical-grade composite transparent PET base materials with outer surfaces coated with a modified acrylate anti-graffiti layer and an inner surface coated with a single-componentacrylate pressure-sensitive adhesive. According to the invention, with the multilayer strippable locomotive glass anti-graffiti adhesion film, the glass is prevented from splashing to injure people after bursting or being coated and scratched by people, the surface of the glass is protected from being scratched, the scratch layer can be torn off if the surface of the glass is scratched, and at most four layers can be torn off so as to reduce the replacement cost of the locomotive glass.

Description

Technical field [0001] The invention relates to the technical field of glass film, in particular to a multi-layer peelable anti-graffiti film for motorcycle glass. Background technique [0002] 90% of the existing rail train glass film needs to be imported. The first problem is that most of the rail transit passenger car windows in foreign countries use scratch-resistant and explosion-proof film glass. One is to prevent the glass from accidentally bursting and hurting people. Reduce the cost of glass scratch replacement, and the labor cost in foreign countries is high. The anti-graffiti film led by 3M, Longfilm, Saint-Gobain, and Martic is their first choice. The advantage of this product is to stick on the glass surface. After being scratched, tear it off, and then paste a layer on the glass without replacing the glass. The disadvantage is that the labor cost of tearing, removing glue, cutting, and pasting the film each time is relatively high. [0003] The second question is tha...

AI Technical Summary

Problems solved by technology

[0002] 90% of the glass film of existing rail trains needs to be imported. The first problem is that most of the windows of rail transit passenger cars in foreign countries use scratch-resistant and explosion-proof film glass. To reduce the replacement cost of glass scratches, while the labor cost in foreign countries is relatively high, the anti-graffiti film led by 3M Company of the United States, Longmo, Saint-Gobain, and Matic is their first choice. The advantage of this product is that it is attached to the glass surface. After being scratched, tear it off, and then stick a layer on the glass, no need to replace the glass. The disadvantage is: the labor cost of tearing off the film, removing glue, cutting, and pasting the film is relatively high.

[0003] The second question, in June 2017, CRRC proposed a high-speed rail 600KM / hour plan, and entered the experimental stage in 2018. The lightweight target of the window is 20KG / window, and the three-cavity technology of PC board + glass is adopted. The only PC board manufacturers that can be used in fast transportation such as high-speed rail and aircraft windows are Saudi Arabia's SABIC and Germany's BAYER. The materials of these two can pass the fire detection of DIN5510 in Germany and ASTM in the United States.

The anti-graffiti safety explosion-proof film for railway passenger car glass of the utility model, the surface layer is more resistant to oil stains, and scratches by hard objects will not affect the explosion-proof performance of the film itself. Including single-layer anti-graffiti and explosion-proof film, the difficulty of secondary installation and repair is relatively small, and the application value for PC board (plexiglass) is small

[0005] In addition, 3M, Llama, Johnson & Johnson, Saint-Gobain and other international imported brands, most of the explosion-proof film series products are architectural films, and there is no way to apply PC boards to car windows. There are requirements for the water vapor of PC board films on car windows, and the water vapor barrier rate It cannot be greater than 0.005g / ㎡ / 24 hours, but similar products of imported brands such as 3M cannot achieve this function

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