Photovoltaic PVB Encapsulation Film Production Line Single Screw Extruder For BIPV Panels

PVB Encapsulation Film Production Line Use Single Screw Extruder For BIPV Panels

PVB film is a semi-transparent film with good adhesion to inorganic glass, and it is transparent, heat-resistant, cold-resistant and has high mechanical strength. PVB film can absorb the impact energy, and it do not produce broken pieces. This kind of safety glass is widely used in cars, high-rise buildings, bank counters, a variety of bulletproof glass. In the safety performance, it has excellent sound insulation, light control, heat preservation, heat insulation, shock resistance and other performance, so it is the world's ideal safe glass processing materials.

Main USES of PVB film extrusion line

1. PVB automobile safety glass film production line: PVB film is mainly used as the intermediate layer of automobile front windshield

2. PVB building glass intermediate film production line: PVB film is mainly used as the intermediate layer of high-rise building glass

3. PVB solar film production line: PVB film is used for packaging solar film batteries

Introduction of PVB Glass film production machine

China Gwell machinery CO. LTD. 's PVB film production line is a reliable brand. 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 desired width according to user's requirements.

Features of PVB Glass film production machine

1. Adapt to different types of processing systems with various material

2. From loading material to the final winding, it is using automatic mixing, PLC full integration, and it can do turnkey project

3. High output, low energy consumption and high degree of automation.

PVB film production line is divided into two kinds. One is a dry process, also called roll method of the process, through the stretch film extrusion, cooling stereotypes winding in the air. The other is a wet process, also called water craft, stretch film extrusion of film through tank cooling stereotypes, blow dry after winding. There are a lot of equipment differences between two kinds of process , and their prices is also very different. The main machine can adopt single screw extruder or parallel twin screw extruder according to different needs and raw materials. Please consult the sales engineer for details. PVB glass film production line is the core technology of Gwell.

SGP hot melt adhesive film production line product introduction

Gwell has developed a new generation of safety glass laminated film (SGP) film production line based on its own processing experience in plastic extrusion sheet equipment and integrated PVB film equipment.

SGP Film Main process

After accurately measuring and uniformly mixing the SGP raw materials and additives, they are plasticized and extruded by an extruder, and then the finished product is obtained by casting, cooling, and traction.

GWELL Equipment advantages:

(1) Fully automatic weighing type metering device to ensure high-precision feeding of various solid and liquid additives and raw materials. SGP is an ionic intermediate layer, which is composed of ethylene-methacrylic acid copolymer and a small amount of metal salt.

(2) The low-temperature extrusion system ensures good film performance while ensuring full mixing and plasticization.

(3) The special design of the casting part solves the problems of sticking roller and peeling.

(4) Unique online tempering and stress relief device.

(5) There are multiple tension control systems in the production line, so that the flexible sheet can be conveyed smoothly during the cooling, traction and winding process.

(6) The centralized control of Siemens PLC and industrial computer can easily realize closed-loop control.

Features of SGP film

(1) Compared with PVB film, it is stronger and more transparent. It is a good configuration for ultra-white glass.

(2) The tear strength of the SGP laminated glass interlayer film is five times that of ordinary PVB, and the hardness is one hundred times that of PVB. It is a good material for bulletproof glass.

The application of laminated glass produced by SGP

bulletproof glass, explosion-proof glass; mainly used in money transport vehicles, prisons, banks, glass open-air ceilings, glass stairs (it can adhere to metal well), handrails.

PV building integration, also known as BIPV (Building Integrated Photovoltaics), refers to the integration of solar photovoltaic modules into building materials and structures. One important component in BIPV systems is PVB (Polyvinyl Butyral) glass interlayer film.

PVB glass interlayer film is a crucial element in the construction of BIPV systems. It has several significant effects and implications for PV building integration.

1. Enhanced energy efficiency: PVB glass interlayer film helps improve the energy efficiency of buildings by converting sunlight into electricity. The solar photovoltaic modules embedded with PVB film can generate clean and renewable energy to power various electrical systems within the building, reducing reliance on non-renewable energy sources.

2. Aesthetically pleasing integration: PVB glass interlayer film allows for seamless integration of solar panels into building facades, windows, and roofs. By using PVB film, architects and designers have more flexibility in incorporating solar panels into the building's design, enabling the creation of visually appealing and modern structures.

3. Structural stability and safety: The unique adhesive properties of PVB film provide structural integrity to the photovoltaic modules. The film acts as a bonding agent, improving the durability, impact resistance, and overall safety of the BIPV system. It ensures that the embedded solar panels can withstand various environmental conditions, including wind, rain, and snow.

4. Noise reduction: PVB glass interlayer film possesses sound-damping properties that contribute to reducing external noise inside the building. This feature enhances the comfort of occupants and creates a quieter indoor environment, especially in busy urban areas.

5. Sustainable development: By adopting PV building integration with PVB glass interlayer film, we can promote sustainable development. The utilization of solar energy reduces greenhouse gas emissions, leading to a cleaner and greener environment. Additionally, the integration of renewable energy systems into buildings allows for greater energy independence and resilience.

In conclusion, PVB glass interlayer films play a crucial role in the effectiveness and significance of PV building integration. They enhance energy efficiency, contribute to aesthetic integration, improve structural stability, reduce noise, and promote sustainable development. Through the use of PVB film, buildings can become more energy-efficient and environmentally friendly while maintaining their functionality and visual appeal.

At present, the packaging forms of photovoltaic modules mainly include glass-EVA-backsheet and glass-PVB-glass. I will describe the characteristics of EVA and PVB encapsulation films respectively.

Photovoltaic industry is a rapidly developing emerging industry that converts solar energy into electric energy. Silicon solar cell modules are mainly used in large-scale grid-connected power generation, off-grid power stations, BIPV photovoltaic building integration, etc. The encapsulation films mainly include EVA and PVB.

1. Introduction of PVB encapsulation film production line

The PVB encapsulation film production line manufactured by GWELL adopts unique design and advanced manufacturing technology. Improve the stability and automation of the machine. The feeding system is connected with the extruder to realize online accurate proportioning of raw materials, so as to stabilize the quality of PVB encapsulation film and reduce labor cost. The specially designed rollers are used to cool the PVB encapsulation film evenly, reducing the stress caused by uneven cooling and heating, thereby ensuring the correct shrinkage rate.PVB encapsulation film production line

2. Advantages of PVB encapsulation film:

PVB encapsulation film is mainly used for BIPV modules, the structure is steel glass (ultra white)-PVB-cell-PVB-tempered glass (normal)

3. Comparison of PVB encapsulation film and EVA encapsulation film:

EVA is a thermosetting resin with cross-linking reaction; PVB is a thermoplastic resin with reproducibility and no cross-linking reaction;

The domestic glass curtain wall specification clearly puts forward the regulation of "application of PVB". BIPV photovoltaic modules can be made by PVB instead of EVA to achieve a longer service life.

PVB has strong adhesive properties, and its safety is higher than that of EVA film;

EVA has many formulas, and the packaging process is not easy to control; the formula of PVB film is simple, the quality control is stable, and the shelf life is long;

PVB film has poor fluidity, which can prevent film overflow during processing.

PVB encapsulation film production line

4.Machine model of PVB encapsulation Film production line