Why are there small bubbles in the film?
2 Answers
Small bubbles appear in the film due to trapped air. Here is a detailed introduction to the benefits of automotive window film: 1. Heat insulation and sun protection: The film effectively blocks a large amount of heat generated by infrared rays. 2. UV protection: Medium and long-wave ultraviolet rays can penetrate thick glass, but applying a heat-insulating film can block most UV rays, protecting the skin and reducing the aging of car interiors. 3. Safety and explosion-proof: The base layer of the film is made of polyester, which has strong tear resistance and puncture-proof capabilities. Combined with the adhesive layer, the film enhances the strength of the glass, preventing injuries to passengers in case of accidental glass breakage.
When I first applied a film to my beloved car, I messed up and ended up with small bubbles. The main reason was that I was too impatient and didn’t clean the surface properly, leaving tiny particles stuck to the adhesive, which hindered bonding and trapped air, causing bubbles. Additionally, my hands weren’t steady enough during application, and the squeegee didn’t press evenly, leaving air pockets. Later, I learned my lesson and chose an indoor, wind-free environment. I thoroughly wiped the surface with alcohol first, then slowly pushed from the center to the edges. Temperature is also crucial—too low and the adhesive won’t stick, too high and the film may shrink or warp. The ideal temperature is around 20°C. Remember to use a professional squeegee instead of hard objects to avoid issues next time. In short, DIY film bubbles are mostly caused by human negligence and detail mistakes, so practice and patience are key.
