Laminated glass is composed of two or more pieces of glass with one or more layers of organic polymer intermediate film sandwiched between them. After special high-temperature preloading (or vacuum pumping) and high-temperature and high-pressure processing, the glass and the intermediate film are permanently bonded togetherComposite glassProducts.
The commonly used laminated glass intermediate films are PVB, SGP, EVA, PU, etc.
In addition, there are some special ones, such as colored interlayer glass, SGX type printed interlayer glass, XIR type LOW-E interlayer glass, etc.Embedded decorative parts (metal mesh, metal plate, etc.) laminated glass, embedded PET material laminated glass and other decorative and functional laminated glass.
According to the melting point of the intermediate membrane, 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 clip, cloth clip, plant clip, wire clip, silk clip, metal wire clip and many other types;
According to the different bonding methods between the interlayer, it can be divided into: mixed laminated glass, dry laminated glass, hollow laminated glass;
According to the different layers of interlayer, it can be divided into general laminated glass and bulletproof glass.[1]
Material properties
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Mezzanine display
Even if the glass is broken, the fragments will be stuck to the film, and the broken glass surface will remain clean and smooth.This effectively prevented the occurrence of debris stabbing and penetrating falling, and ensured personal safety.In Europe and America, most of themArchitectural glassLaminated glass is used, which is not only to avoid injury accidents, but also because laminated glass has excellent anti invasion ability.The intermediate membrane can resist the continuous attack of hammer, wood cleaving knife and other lethal weapons, and can also resist bullet penetration for a long time. Its security degree is extremely high.The glass is broken safely and may break under the impact of a heavy ball, but the whole glass still maintains an integrated interlayer, and the fragments and sharp small fragments are still stuck with the intermediate membrane.When the glass is broken, the fragments will not disperse, and it is mostly used on vehicles.Tempered glassLarge impact force is required to break. Once broken, the whole glass bursts into countless fine particles, and only a few broken glass are left in the frame.Ordinary glassIt will break upon collision. The typical breaking condition produces many long, sharp edged pieces.Wired glassWhen broken, the mirror tooth shaped fragments surround the hole, and there are many glass fragments around the penetration point,WireThe length of fracture varies.[1]
Safety glass
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definition
It refers to laminated glass and toughened glass conforming to national standards, as well as those processed from themHollow glass。Among them, laminated glass and insulating glass made of laminated glass have the best comprehensive performance.[1]
classification
Ordinary civil tempered glass is made of ordinary glass through heat treatment process to increase its strength by 3-5 times. It can withstand external impact of certain energy or temperature difference change without breaking. Even if broken, the whole glass is broken into small particles with obtuse angle similar to honeycomb, which is not easy to hurt people, so it has certain safety.Tempered glass cannot be cut. It is necessary to cut the size before tempering, and it has the characteristics of "self explosion".According to different uses, tempered glass can be divided into fully tempered glassHeat-strengthened glass 、Zone tempered glass, flat tempered glass, curved tempered glass and other types.
Laminated glass as aSafety glassAfter being impacted and brokenOrdinary glassThe bonding effect of PVB film in the middle clip will not cause sharp fragments to hurt people like ordinary glass.At the same time, itsPVB intermediate membraneIts sound insulation and sunlight control properties make it a new building material with energy saving and environmental protection functions: laminated glass can not only isolate the 1000 Hz - 2000 Hz coincidence noise that can penetrate ordinary glass, but also block more than 99% of the ultraviolet rays and absorb the heat in the infrared spectrum.As a new building material, laminated glass is bound to play a huge role in the use of safety glass.[1]
Application advantages
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It will not fall off after being broken
The sound insulation effect of modern rooms has become one of the important factors for people to measure the quality of housing.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 helps the valuable furniture and exhibits in the home get rid of fading doom.It can also reduce the transmission of sunlight and cooling energy consumption.The many advantages of laminated glass can also have unexpected good effects when used in home decoration.So many family doors, including the kitchen door, are usedFrosted glassMake materials.The cooking fume in the kitchen is easy to accumulate on it when cooking. If laminated glass is used instead, there will be no such trouble.Similarly, the large area of glass separation in the home is a potential safety hazard for naturally active children. If laminated glass is used, parents can be greatly relieved.Even if the glass is broken, the fragments and sharp small pieces still stick together with the intermediate membrane.[1]
Production process
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Curved LED glass display
LED glassAlso calledPhotoelectric glass, Power Glass, is a kind ofLED light sourcePerfect combination with glass and breakthroughBuilding decoration materialsThe traditional concept of.The pattern can be designed inside the glass in advance, and the controlled change can be realized through DMX full digital intelligent technology in the later stage, so as to freely control the light, shade and change of LED light source.The inside is made of completely transparent wires, which are different from ordinary metal wires. No lines can be seen on the glass surface;After special treatment in the later stage, both technical requirements and safety requirements have reached the relevant national certification standards.[1]
safety standards
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National standard GB9962, European standard CE (including EN standard), ANSI
⑦ Class III laminated glass is not usedWired glassAnd tempered glass.[1]
Shopping points
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Check the mark and certificate
Since 2003Safety glassSince the product certification, most of the building laminated glass manufacturing enterprises in China have passed the product certification. Enterprises must screen or paste the 3C mark on the product body they sell, or add the 3C mark on the minimum outer package and attached documents (such as the certificate of conformity).When purchasing products, first check whether there is a 3C mark, and check whether the purchased products are within the scope of the enterprise's ability to pass the compulsory certification and whether the certification certificate is valid through the network according to the enterprise information, factory number or product certification certificate.[1]
Check the appearance and quality
Check the appearance quality of the product, and the laminated glass shall be free of cracks and degumming;The length or width of the bursting edge shall not exceed the thickness of the glass;Scratches and abrasions shall not affect the use;Defects such as bubbles, impurities or other observable opacity in the intermediate layer shall not exceed the requirements of GB/T 15763.3 standard.
In the process of use, external force impact shall be avoided as far as possible, especiallytempered laminated glass Avoid force impact on the tip.When cleaning the glass, be careful not to scratch, scratch or abrade the glass surface, so as not to affect its optical performance, safety performance and beauty.Neutral glue shall be used for laminated glass installation, and contact with acid glue is strictly prohibited.[1]
