How much is the knowledge of automotive glass?
[China Glass Network] Every day on the road, the owners of the car are looking at the world through the window glass of the car. But how much do you know about automotive glass? Today, Xiaobian takes you to see.
Types and characteristics of automotive glass
Since the day the car was born, it has been inseparable from the glass for the car. However, the original car manufacturers believed that the automobile glass was only used to resist the cold, prevent rain and dust. With the development of the automobile industry, road conditions continue to improve, and the speed of vehicles is increasing. The importance of glass for automobiles is gradually recognized by automobile manufacturers and users. The types of automobile glass are gradually increasing and the performance is rapidly increasing. Common automotive glass includes the following categories:
Laminated glass
The laminated glass is generally composed of two organic glass layers between ordinary glass and glass, or three layers of glass and two layers of glue layers or more layers. The original sheet of the laminated glass may be ordinary glass, tempered glass, semi-tempered glass, coated glass, heat absorbing glass, hot bending glass, or the like. The intermediate layer organic material is commonly used PVB (polyvinyl butyral), and also has methyl methacrylate, silicone, polyurethane and the like. The laminated glass having high penetration resistance is a type A laminated glass.
2. Insulating glass
The insulating glass is composed of two or more pieces of float glass. The aluminum alloy frame is filled with desiccant between the glass sheets. After sealing with butyl rubber, it is sealed with polysulfide or structural adhesive. .
3. Covered glass
The edging glass is an assembly product of automotive safety glass. The glass edging design not only reflects the aesthetic requirements of the car manufacturers, but also makes the glass and the car body more closely combined, which improves the assembly efficiency of the automobile production line, shortens the assembly cycle, enhances the glass strength, improves the sealing performance, and reduces the noise. Additional accessories and other advantages.
4. Bulletproof glass
Bulletproof glass is a laminated glass composed of three layers of glass and PVB film, which can successfully resist the penetration of bullets and broken glass fragments. The ballistic performance of a glass is highly dependent on its total thickness and bullet energy.
In addition, common water glass, antenna glass, HUD front glass, soundproof glass, insulating glass, heating glass, etc.
Identification of automotive glass signs
There are always some signs on the car glass. By identifying these signs, it is easy to determine the type, model and manufacturer of the car glass. The car glass logo is more common in the following four types:
1. National safety certification mark
Safety glass for automobiles is a national compulsory certification product. Therefore, every glass on a car should have a national safety certification mark. It used to be a “square mark†and is now a “3C†mark. This is a more common and important sign on automotive glass.
2. Foreign certification mark
For example, the "DOT" mark in the United States and the "E" mark in the European ECE indicate that the product has also been certified by these foreign certification bodies and can be exported to foreign countries. Of course, some companies obtain foreign certification only to show that the quality of their products has an "international standard."
3. Automobile factory logo
In general, the glass manufacturer will print the logo of the automobile manufacturer, such as the trademark and company name, on the glass at the request of the automobile manufacturer.
4. Glass production company logo
Glass manufacturers will print trademarks or company abbreviations on their own glass. In addition, in recent years, due to the use of safety certification codes, some auto glass manufacturers do not directly put the company name on the glass, but through the safety certification code. In the left (right) lower corner of the car glass, there must be safety certification information of the manufacturer. Imported cars (formal channels) are no exception, which is mandatory by the state. Among these information, there are E×××××× numbers, E stands for safety glass certification, 6 digits are manufacturer codes, and different brands of different production sites have different codes. For details, please refer to the "Safety Certification Code Table for Auto Glass Manufacturers".
In addition, glass manufacturers often use some letter designation to represent the type and properties of the glass. For example: L stands for the interlayer, LFW stands for the interlayer front, FV stands for the front door triangle, and T stands for tempering.
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