PVB SGP film extrusion line

PVB SGP film extrusion line is divided into two kinds. One is a dry process, also called the roll method of process, through the stretch film extrusion, cooling stereotypes winding in the air. The other is a wet process, also called watercraft, stretches film extrusion of film through tank cooling stereotypes, and blows dry after winding.

The equipment of the two processes is very different, and the price is also very different. The main machine can use a single-screw extruder or a parallel twin-screw extruder according to different needs and raw materials. PVB glass film production line and PVA film extrusion line are the core technologies of China GWELL.

PVB intermediate film is a translucent film, which is a polymer material plasticized and extruded by polyvinyl butyral resin with a plasticizer.

The appearance is a translucent film, free of impurities, flat surface, certain roughness,, and good softness. It has good adhesion to inorganic glass and has the characteristics of transparency, heat resistance, cold resistance, moisture resistance, and high mechanical strength.

It is the best bonding material for manufacturing interlayer and safety glass in the world. At the same time, it is used in building curtain walls, tents, windows, bank counters, prison visiting windows, steel furnace screens, and various bulletproof glass are also widely used in construction fields.

PVB SGP film extrusion line Process Flows

Extruder —- Screen changer —– Melt pump —– T-die —— Calender —– Thickness Scanner —-Cooling Bracket —-Cutting Knife —- Haul-off —-Winder

China Gwell Machinery Co., Ltd. is a professional manufacturer of PVB SGP film extrusion lines.
China’s top three PVB manufacturers are using Gwell’s PVB dry process (by roller) and PVB wet process (by water) film equipment. India’s first PVB film production line is also made by Gwell.

• PVB film width: 3600mm (Max),
• PVB film thickness: 0.38-1.52mm,
• Output: 500-800kg/h,
• Shrinkage: ≤2%,
• Total length of production line: 28m.
• It can be cut into the desired width according to the user’s requirements.

PVB SGP film extrusion line has the following characteristics

1. Adapt to different types of processing systems with various materials.
2. From loading material to the final winding, it is using automatic mixing, and PLC full integration, and it can do turnkey projects.
3. High output, low energy consumption, and a high degree of automation.

Its high performance is reflected in

The shear mode of ionic film SGP is more than 50 times that of PVB, and the tear strength is 5 times that of PVB. When the laminated glass produced by the ionic film is stressed, there is basically no sliding between the two pieces of glass. The two pieces of glass are like one piece of glass, and the bearing capacity is twice that of PVB laminated glass. Under the condition of equal load and the same thickness, the bending of SGP laminated glass is only 1 / 4 of that of PVB laminated glass.

Compared with the laminated glass produced by PVB, the laminated glass produced by SGP film has better performance because it has the following properties:

1. It has a high bonding ability to glass and strong tear strength, which can prevent the flying of glass breakage.
2. It has a strong protection ability, can prevent natural disasters and human damage, and has sufficient resistance to strong winds, earthquakes, violence, theft, etc.
3. It can withstand the sudden impact of indoor personnel, prevent the glass from flying or falling out as a whole, and prevent indoor personnel and articles from flying out and falling.
4. There is enough residual bearing capacity, and the whole piece will not fall off when the glass is bent after breaking.
5. SGP film has enough shear die to make the whole section of laminated glass work under bending, improve the bearing capacity and bending rigidity of glass, and reduce the thickness and weight of glass.
6. It can withstand the influence of ultraviolet, water vapor and external climate change, and there will be no yellowing and discoloration after long-term use
7. Excellent mechanical properties and high strength. Under the same thickness, the bearing capacity of the SGP interlayer is twice that of PVB; Under the same load and thickness, the bending deflection of SGP laminated glass is one-fourth of that of PVB;
8. Tear strength. Under the same thickness, the tear strength of PVB laminated film is 5 times that of PVB. In case of tear, it can also be bonded to the glass without falling the whole glass.
9. Strong stability and moisture resistance. SGP laminated film is colorless, transparent, and UV resistant. It is not easy to turn yellow after long-term sun and rain, and the yellowing coefficient is less than 1.5. However, the yellowing coefficient of PVB laminated film is 6 ~ 12. Therefore, SGP is the darling of ultra-white laminated glass.