A super-transparent car body stick-film

Abstract

The invention relates to a super-transparent car body stick-film including a super-transparent layer, an adhesive layer and an anti-sticky layer. The super-transparent layer is a TPU super-transparentmembrane or a PVC super-transparent membrane, the adhesive layer is a transparent pressure sensitive adhesive layer, and the surface of the super-transparent layer contains a transparent hardening elastic coating. The transparent hardened elastic coating comprises, by mass: 40-85 parts of polycarbonate polyurethane resin, 2-10 parts of a cross-linking agent, 0-2 parts of a hardening agent, 0-2 parts of an adhesion force promoter, 0-2 parts of an anti-foam agent, 0-2 parts of a leveling auxiliary agent and 0-20 parts of water. Low temperature thermosetting aqueous polycarbonate polyurethane resin is adopted as a coating system, and the system has advantages of environmental protection and low energy consumption compared with oil systems or UV curing systems which are commonly used at present.

Description

Technical field [0001] The invention relates to the field of car body stickers, in particular to a super transparent car body sticker. Background technique [0002] At present, the popular car body stickers on the market usually use PVC white film or PVC color changing film as the base material. This kind of car body stickers are widely used in public transportation such as subways and buses to display advertisements and change the color of cars. Many private car owners prefer the color of the car itself, and at the same time they hope that the film can have a significant protective effect on the paint surface, so the transparent body sticker was born. [0003] The current development of transparent car stickers is: most of the PVC transparent film is used as the substrate. Because the surface hardness of the PVC transparent film is low, it is easy to be scratched by external force, and the internal plasticizer is easy to migrate, causing the film to become hard and brittle. Direc...

AI Technical Summary

Problems solved by technology

[0003] The development of the existing transparent body stickers is: most of them use PVC transparent film as the base material. Due to the low surface hardness of PVC transparent film, it is easy to be scratched by external force, and the internal plasticizer is easy to migrate, making the film hard and brittle. Direct sunlight and rain erosion are prone to yellowing, so the existing transparent body stickers cannot protect the paint well and for a long time after being used on the surface of the car

In response to these problems, people have invented transparent car body sticker products based on transparent PET. Although PET has a higher surface hardness and better weather resistance, due to its high stiffness, it is difficult to bend when applying the film, which affects the effect of the film.

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