Is it normal to have bubbles after applying film?

[IkerDella]

It is normal to have bubbles after applying film. Here is an introduction to car film: 1. Introduction: Car film refers to applying a thin film-like material on the front and rear windshields, side windows, and sunroof of a vehicle. This film is also known as solar film or heat-insulating film. 2. Functions: Its main purposes are to block ultraviolet rays, reduce heat, prevent injuries caused by glass shattering, and reduce glare. Additionally, due to the one-way transparency feature of solar film, it helps protect personal privacy. 3. Principle: The film is made by vacuum deposition or magnetron sputtering technology to create multiple layers of highly heat-insulating metal coatings using materials such as aluminum, gold, copper, and silver. The outer shell electrons (free electrons) in these metal materials are generally not bound by the atomic nucleus. When exposed to light waves, the electric field of the light causes the free electrons to absorb the light's energy and oscillate at the same frequency as the light. This oscillation then emits light of the same frequency as the original light, which is called light reflection.