Safety Tips: Security film, safety film and escape in the car

At present, there are a variety of membrane materials on the market, and the most confusing is the difference between security membranes and safety membranes. How to judge high-quality automotive glass security membranes with good impact resistance is crucial.

First of all, in terms of material structure and thickness, the thickness of the safety film is between 100-175 microns (about 4-7 mil); and the security film is a multi-layer polyester composite film laminated by a special process, with a thickness of 250 microns (about 10mil) or more. Thickness is a hard indicator to distinguish between safety film and security film.

Second, comparing the protection level with the protection concept, the design of the safety film can prevent or reduce the damage that may be caused to the person when the glass is accidentally broken. It can only simply prevent the glass splash problem caused by the similar glass explosion, and the protection level is lower. The design of the security film can absorb the explosion shock wave and resist the impact of strong energy. The combination of high-end security film and glass can even reach the bulletproof level. Its protection function covers the effect of the security film and reaches the level of security.

Third, there is a clear difference between the safety membrane and the security membrane in the implementation of standards. The standard that the safety film can generally reach is based on preventing the glass from breaking. Most of these standards are to prevent "glass breakage". For example, the safety film is to prevent the window glass from breaking when it is impacted by lower energy; if the glass breaks, its fragments still need to be adhered to the safety film on a large area to prevent The secondary damage caused by the falling glass. The detection standard of the security film is based on preventing penetration.

After listening to the difference between the two, let's take a look at how to escape in the car with the safety film and security film attached to the car.

We know that the security film is thicker, 8 times the thickness of the sunlight film, or even higher. Attaching a security film to the car window glass can improve the impact resistance of the glass. At the same time, once the glass is broken, it can also block the penetration of external shocks as much as possible. Such a thick security film can block the impact of greater energy, and it is naturally very important to escape from the broken window when encountering flooding.

Comprehensive experts and various introductions, the key to the problem is not what kind of film is attached, but the glass must be broken. Once the glass is broken, neither the solar film nor the security film will become an obstacle to escape. .

Because the automobile side window glass mainly uses a single piece of tempered glass. When the glass is broken, the inside is supported by the film layer; especially the security film is firmly and tightly bonded together with the glass under the action of the adhesive, resulting in a very strong With strong support pulling force, the broken glass still maintains a rigid whole. At this time, the force from the outside to the inside of the vehicle is not easy to be pushed down or penetrated. When we apply force from the inside of the car to the outside of the car, the glass is easily pushed down without the support pull generated by the membrane. Of course, the premise is to break the glass.