First, laminated glass definition:
Laminated glass is composed of two or more pieces of glass, sandwiched between one or more layers of organic polymer intermediate film, after special high temperature prepressing (or vacuum) and high temperature and high pressure process treatment, so that the glass and the intermediate film permanently bonded as one of the composite glass products.
Commonly used laminated glass intermediate film are: PVB, SGP, EVA, PU and so on.
In addition, there are some more special such as color interfilm laminated glass, SGX class printed interfilm laminated glass, XIR class LOW-E interfilm laminated glass and so on. Inlaid decorative pieces (metal mesh, metal plate, etc.) laminated glass, inlaid PET laminated glass and other decorative and functional laminated glass.
Ii. Main types:
According to the melting point of the intermediate film, it can be divided into: low temperature laminated glass, high temperature laminated glass, insulating glass;
According to the different materials in the middle, it can be divided into: paper, cloth, plant, wire, silk, wire and many other types;
According to the different bonding methods between the interlayers, it can be divided into: mixed laminated glass, dry laminated glass, hollow laminated glass;
According to the different layers of the sandwich, it can be divided into: general laminated glass and bulletproof glass.
Third, material characteristics:
Even if the glass breaks, the fragments will be stuck to the film, and the surface of the broken glass will remain clean and smooth. This effectively prevents the occurrence of splinter injuries and penetrating falls, ensuring personal safety
Laminating display
The glass breaks safely and may break under the impact of a heavy ball, but the whole glass still maintains a single interlayer, and the fragments and sharp small fragments are still stuck together with the intermediate membrane. When this kind of glass is broken, the fragments will not be dispersed, and it is used in vehicles such as cars.
Tempered glass requires a large impact force to break, once broken, the whole glass burst into countless fine particles, only a few broken glass in the frame.
Ordinary glass breaks upon impact, and the typical broken condition produces many long, sharp fragments.
When the wire glass is broken, the mirror tooth fragments surround the entrance, and more glass fragments are left around the penetration point, and the length of the wire fracture is different.
Four, safety glass:
definition
Refers to laminated glass, tempered glass in line with national standards, and hollow glass processed with them. Among them, the composite performance of laminated glass and insulating glass made of laminated glass is the best.
sort
General civilian tempered glass is the ordinary glass through the heat treatment process, so that its strength is increased by 3-5 times, can withstand a certain amount of energy of external impact or temperature change without breaking, even if broken, is the whole piece of glass broken into similar honeycomb obtuse small particles, not easy to hurt, so as to have a certain degree of safety. Tempered glass can not be cut, need to be cut before tempering size, and have "self-explosion" characteristics. According to different uses, tempered glass can be divided into full tempered glass, semi-tempered glass, regional tempered glass, flat tempered glass, curved tempered glass and other types.
Laminated glass as a safety glass is broken by impact, because of the bonding effect of the PVB film sandwiched between the two ordinary glasses, it will not cause sharp fragments to hurt people like ordinary glass after breaking. At the same time, its PVB intermediate film has the performance of sound insulation and sunlight control, which makes it a new building material with energy-saving and environmental protection functions: the use of laminated glass can not only isolate the 1000 Hz - 2000 Hz noise that can penetrate ordinary glass, but also block more than 99% of ultraviolet light and absorb heat in the infrared spectrum. Laminated glass, which conforms to the performance of new building materials, is bound to play a huge role in the use of safety glass.
5. Application Advantages:
Whether the sound insulation effect is good in modern living rooms has become one of the important factors for people to measure the quality of housing.
Using Saflex? The laminated glass of PVB intermediate film can block sound waves and maintain a quiet and comfortable office environment. Its unique UV filtering function not only protects people's skin health, but also makes valuable furniture and displays at home get rid of the bad luck of fading. It can also reduce the transmission of sunlight and reduce the energy consumption of refrigeration.
The many advantages of laminated glass, used in home decoration will also have unexpected good results.
For example, many family doors, including kitchen doors, are made of frosted glass. Cooking kitchen fumes are easy to accumulate on top, if you use laminated glass instead, there will be no trouble. Similarly, the large area of glass spacing in the home is a safety hazard for children who are naturally active, and if laminated glass is used, parents can be greatly reassured. Even if the glass is broken, fragments and sharp small fragments are still stuck with the intermediate membrane
Six, safety standards:
National standard GB9962, European standard CE(including EN standard), ANSI,...
Compliance standards for glass materials:
① Float glass: GB11614;
② embossed glass: JC/T511;
③ Wire mesh glass, wire glass: JC433;
④ Tempered glass: GB/T9963;
⑤ Heat-absorbing glass: JC536;
⑥ Semi-tempered glass: GB17841;
Class III laminated glass does not use wire glass and tempered glass
