EVA POE solar film extrusion line

China GWELL has two EVA POE solar film extrusion lines: one is a single screw extruder that can produce EVA or POE film monolayers. The other is co-extrusion, which can produce either single-layer EVA or POE film, or EVA/POE/EVA three-layer film (EPE film). It will be according to the customer’s request.

Description

EVA POE solar film extrusion line introduction

EVA is a thermosetting adhesive film that is used in the middle of laminated glass. EVA and POE encapsulation films are mainly used for the encapsulation of crystalline silicon and some thin-film solar cell modules. Due to the superiority of EVA and POE films in terms of adhesion, durability, and optical properties, they are more and more widely used. Used in current components and various optical products.

EVA film extrusion line components

  1. All parts can be customized.
  2. Extrusion system Customized thread combination structure to ensure high output.
  3. The forming system, select sincere molds and adjust product thickness at any time.
  4. Three-roller setting bearing, the error is controlled in the micron mirror roll-to-compression molding, independent servo control, and imported roller shaft.
  5. Traction winding: nitrile rubber roller traction, multi-station winding.

POE film production line introduction

  • China GWELL as a film extrusion line manufacturer, POE has the general characteristics of thermoplastic elastomer, the soft chain curl structure of octene, and the crystalline ethylene chain as a physical cross-linking point, it has both excellent toughness and good processability. The price is low and the relative density is small, so the volume is cheap;
  • Excellent heat resistance and cold resistance, wide operating temperature range.
  • Good weather resistance and aging resistance. Because there is no unsaturated double bond in the molecular structure of POE plastic, it has excellent aging resistance.
  • Oil resistance, compression permanent deformation resistance, and wear resistance are not very good. POE plastics have narrow molecular weight distribution, good fluidity, and good compatibility with polyolefins. Good fluidity can improve the dispersion effect of fillers and also improve the weld line strength of products.

EVA film machine introduction

EVA film is a high-viscosity film material sheet made of polymer resin (ethylene-vinyl acetate copolymer) as the main raw material, adding special additives, and processing with special equipment. It is also called a modified EVA clip in the industry. Adhesive glass film. Due to the superiority of EVA film in adhesion, durability, optical properties, etc., it is more and more widely used in current components and various optical products.

EVA Solar Encapsulation Film Production Line Technical Parameters

GWELL Machinery has always occupied more than 80% of the market share in the field of EVA photovoltaic film equipment. The company has been deeply involved in the photovoltaic film industry for decades, and the equipment has been designed and optimized for thousands of times. The in-process yield rate and the degree of equipment automation have been widely recognized by various leading companies. In this equipment field, due to the company’s scale advantages and resource advantages, in the field of photovoltaic film, GWELL Machinery is no longer limited to equipment development, and has a very deep understanding of upstream suppliers and downstream customers.

EVA POE Solar Film Extrusion Line Process Flows

eva poe solar film

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

EVA POE Solar Film Extrusion Line adopts the casting process to produce EVA POE solar cell encapsulation film machine. The primary raw material is imported vinyl acetate copolymer EVA POE, and imported plastic additives are added, which are heated, poured, and extruded. The film is not sticky at room temperature, and the cutting operation is convenient. Thermal cross-linking curing and adhesion-enhancing reactions occur after hot pressing, resulting in a permanent bond and seal. It is a new type of thermosetting hot melt adhesive film.

 

Solar cell adhesive film is used for solar cell encapsulation. After lamination and curing, it is bonded and sealed, which has the functions of high light transmittance, preventing water vapor penetration, high and low-temperature resistance, and anti-ultraviolet light.  to ensure the stable and efficient use of battery components, is a durable and reliable packaging material.  EVA POE film production line adopts the casting process to produce EVA POE solar cell encapsulation film. EVA and POE can be shared on one production line. EPE film=EVA+POE+EVA, which is a three-layer co-extruded solar film. Compared with single-layer EVA and POE films, it achieves high performance and saves costs.

 

Compared with EVA laminating machine, the most significant advantage of the POE laminating machine is a low water vapor transmission rate and high volume resistivity, which ensures the safety and long-term aging resistance of components in high temperature and high humidity environments, and ensures long-term use of components. Specifically, the superior performance of POE film over the EVA film machine is that the POE film machine is a copolymer of ethylene and octene, which is a saturated aliphatic chain structure with fewer carbon atoms in the molecular chain, showing good weather resistance and UV aging resistance. It has excellent heat and low-temperature resistance, so POE film has better aging resistance than EVA film machines.

 

The EVA film production line for photovoltaic cell encapsulation developed is a special energy-saving, high-efficiency, innovative, and cost-effective extrusion production line. It is currently China’s hottest EVA film extrusion line for photovoltaic cells. Production equipment.

 

The EVA photovoltaic film under the EVA POE solar film production line generally requires a thermal shrinkage rate of less than 5% to meet the requirements of battery packaging. Shrinkage limits traditional EVA photovoltaic film extrusion production equipment. Production speed is almost entirely dependent on the extrusion speed of the melt out of the die, resulting in an inability to increase production speed. A breakthrough was made in the high-speed extrusion technology of low-shrinkage EVA photovoltaic film. The developed stress relief device can effectively eliminate the residual stress generated during film stretching and online production, and better solve the problem of thermal shrinkage of EVA film.

 

The EVA POE solar film extrusion line has undergone several iterations. The structure and debugging process of EVA solar film machines have been polished for decades, forming a mature production system in the photovoltaic industry. China Plastic Extruder Supplier GWELL can provide customers with a full range of customized services for EVA solar film production lines from raw material procurement, formulation consultation, related auxiliary equipment matching, debugging process training, etc.

 

EVA solar cell adhesive film is used for solar cell packaging. After lamination and curing, it is bonded and sealed. It has the functions of high light transmittance, preventing water vapor penetration, high and low-temperature resistance, and anti-ultraviolet light for cell components, ensuring the stability and efficiency of battery modules. It is a durable and reliable packaging material.

 

EVA POE film production line performance characteristics

 

  1. The drool extruder adopts EVA single screw extrusion, and the screw barrel constant temperature circulating water cooling system solves the technical difficulties of EVA plasticization and non-crosslinking.
  2.  The roller body adopts double-sided embossing, and solves the technical difficulty of sticking the film to the roller.
  3. The cooling part adopts cooling roller and stress-relieving cooling bed to make the film run smoothly and fully shape, to ensure that the shrinkage rate is less than 3%.
  4. The whole line adopts PLC automatic control to realize the operation of man-machine interface.
  5.  The production line is equipped with an online quality monitoring and control system to ensure the qualified rate of products.
  6. Micro tension winder, the line speed of the whole machine can reach 18m/min

 

 EVA/POE Solar film extrusion line Advantages

  • Global market share reaches 90%, including China, America, India, Turkey, and so on.
  • The line speed of the EVA/POE solar film line can reach 18m/min.
  • Cooling parts to ensure shrinkage rate is less than 3%.
  • The special winder ensures micro tension and realizes automatic relaxation and cutting.
  • Comparison and introduction of POE and EVA film, EVA/POE/EVA film
  •  The drooling extruder adopts multi-machine co-extrusion POE single-screw extrusion, and the screw barrel constant temperature circulating water cooling system.
  • The roller body adopts double-sided embossing.
  • The cooling part adopts a cooling roller and stress-relieving cooling bed to make the film run smoothly and entirely shape to ensure that the shrinkage rate is less than 3%.
  • The whole line adopts PLC automatic control to realize the operation of the man-machine interface.
  • The production line is equipped with an online quality monitoring and control system to ensure the qualification rate of products.
  • Development and design of micro-tension winders.

 

EVA POE solar film extrusion line product advantages

 

  1. High transparency and high adhesion can be applied to various interfaces, including glass, metal, and plastics such as PET.
  2. Good durability can resist high temperatures, moisture, ultraviolet rays, and so on.
  3. Easy to store. Stored at room temperature, the adhesion of EVA is not affected by humidity and absorbent films.
  4. Compared with PVB, it has a stronger sound insulation effect, especially for high-frequency sound effects.
  5. Low melting point, easy to flow, suitable for laminating process of various glass, such as patterned glass, tempered glass, curved glass, and so on.

 

The EVA film production line adopts the casting process to produce EVA solar cell encapsulation film. EVA solar cell film is used for solar cell encapsulation. After the lamination is cured, it is laminated and sealed, which has high light transmittance to the battery components and prevents the penetration of water vapor. , high and low-temperature resistance, anti-ultraviolet, and other functions, to ensure the stable and efficient use of battery components, is a durable and reliable packaging material. EVA packaging film production line is in a monopoly global leading position.

eva poe solar film extrusion line finished product display

eva poe solar film extrusion line thickness gauge detail display

 

Features of EVA Film Extrusion Line

  1. EVA single-screw extruder is used for extrusion, and the barrel constant temperature circulating water cooling system solves the technical problems of EVA plasticization and non-crosslinking.
  2. The roller body adopts double-sided embossing, which solves the technical difficulties of the rubber roller.
  3. The cooling part adopts cooling rollers and stress-relieving cooling beds so that the film runs smoothly and is completely shaped, and the shrinkage rate is guaranteed to be less than 3%.
  4. The whole line adopts PLC automatic control to realize man-machine interface operation.
  5. The production line is equipped with an online quality monitoring system to ensure the qualification rate of products.
  6. Patented micro-tension winding machine, the line speed of the entire production line can reach 14m/min.
  7. Low-temperature precision extrusion technology, stable control at 75°C during the process from extrusion to the film release.
  8. It breaks through the limitation of shrinkage rate control on the production line speed; the production line speed can reach 7 m/s, the shrinkage rate can be controlled within 2%, and the production efficiency and quality are doubled.
  9. Tempering stress relief devices, saving energy, and reducing consumption by more than 50%.
  10. Mature online process and electrical control system to ensure long-term stable operation of the equipment.
  11. The procedure is simple and convenient, and the product quality is easier to grasp.
  12. This equipment has mature technology and is widely used in the field of solar cells. The production line speed is about 8m/min. The winder can be semi-automatic or fully automatic according to customer requirements. The equipment has been awarded the utility model product, which solves the technical defects and guarantees quality.

 

Feature of  EVA/POE  Solar film extrusion line

  1. Film Layers: Depending on the finished film, there are two types of extruders that can produce EVA or POE film monolayers. The other is co-extrusion. It can not only produce EVA or POE film single layer, but also can produce EVA/POE/EVA three-layer film (EPE film). It will be according to customer’s request.
  2. Extruder: A special single-screw extruder for EVA/POE is used, the temperature difference between the screw and barrel is ±1°C, and the circulating water cooling system ensures that the longitudinal thickness of the EVA/POE film is uniform. And better plasticization and non-crosslinking.
  3. Screen changer: The advantage of adopting the plate type screen changer is equipped to filter impurities. Compared with the column-type screen changer, the plate-type screen changer has fewer accumulated materials, and fewer materials stored in the screen changer after shutdown and restart, which means less waste. It is convenient to change and clean the screen. It will decrease the cost of the EVA/POE raw material.
  4. Melt pump: With higher accuracy, forming closed-loop control with the extruder, and the pressure fluctuation accuracy behind the pump is ± 0.1MPa; The pressure detection sensor, with accurate detection and fast response, which is one of the keys to ensure the event of longitudinal thickness;
  5. T-die: there are two kinds of T-die, the one is manual T-die, and the other is automatic T-dies. one of the important differences between them is tolerance. And it can ensure the even of cross side.
  6. Calendar: The strength of the roller shall ensure that the temperature fluctuation accuracy of the roller surface is ≤± 1 degree, and the straightness and radial runout of the roller surface is ≤± 0.01mm. The roller body adopts double-sided embossing and solves the technical difficulties of the film sticking to the roller.
  7. Cooling part: Dedicated cooling rolls and stress-relieving cooling bed make the film run smoothly, form fully, and ensure that the shrinkage rate is less than 3%.
  8. Thickness scanner: To match the automatic T-die.Scan the thickness of the film, and reflect T-die. Then T-die can modify automatically. It can decrease labor costs.
  9. Winder: It can decrease the tension and ensure side winding is smooth.
  10. Automatic operation: The whole line adopts PLC automatic control to realize the operation of the man-machine interface. It is easy and automatic to operate.

eva poe solar film extrusion line display

EVA film(Ethylene):

  • Because of the application of solar film, EVA film has good durability to resist high temperatures, ultraviolet rays, moisture, and so on.
  • EVA film can store at room temperature. Although long time, the adhesion EVA will not change.
  • EVA film’s high adhesion can not only adapt to encapsulation but also dressing in the field.

POE film(polyolefin):

In addition to the characteristics of EVA film, the biggest advantages of the POE film produced are low water vapor transmission rate and high volume resistivity, which ensures the safety and long-term aging resistance of the module under high temperature and high humidity environment. Can be used longer than EVA film. Therefore, the performance of POE film is better than that of EVA film.

POE can replace rubber, flexible PVC, EPDM, EPR, EMA, EVA, TPV, SBC, and LDPE, and other materials, used in different products, such as automotive baffles, flexible conduits, conveyor belts, printing cylinders, sports shoes, wire and cable, auto parts, durable goods, extrusion parts, compression molding parts, sealing materials, pipe fittings and fabric coatings, etc., can also be used as a low-temperature impact modifier to improve the low-temperature impact resistance of PP, and can also be used as a low-temperature impact modifier. It is used in the automotive field as a thermoplastic elastomer.

POE can be processed and formed using common thermoplastic processing equipment. The forming processing temperature and processing pressure should generally be slightly higher and can be processed at extremely high processing speeds. It can be injection molded, extruded, or processed into a sheet or film by a calendar, and can be blow molded, and thermoforming can be used to manufacture products with complex shapes. Various pigments can be added to make different colors as needed.

EVA/POE/EVA film:

EVA/POE/EVA film has three layers, including EVA and POE film advantages and lower cost than POE film.

 

eva poe solar film extrusion line 3 1

What are the difficulties in the manufacture of EVA photovoltaic film

EVA photovoltaic film is different from other EVA products and puts forward higher requirements for raw materials, processes and equipment.

1. EVA sensitivity to temperature

One of the biggest characteristics of EVA raw materials is that it is very sensitive to temperature. When the resin is plasticized in the screw, if the temperature is too high or the temperature is too low, the products will be scrapped immediately. The precise control of temperature will directly affect the upper limit of quality of the final product. For this, GWELL Machinery has designed a special screw for EVA, so that EVA can be completely plasticized during the plasticizing process, and there will be no over-plasticization caused by local over-temperature. Not only the temperature is very important in the yield rate of the product, but also the speed of the production line is extremely important. Ten years ago, the EVA photovoltaic film could not have a very high line speed. At that time, the line speed was only 2 meters per meter. In about seconds, after continuous optimization, the speed of the production line has now reached an astonishing 16m/min. It can be said that it is not inferior to the tens of millions of equipment in Germany. This is also an important reason why GWELL has gradually become the leading company in this market in the past ten years.

2. Strict control of winding tension on EVA

Don’t underestimate the influence of the internal stress of EVA photovoltaic film on the quality of photovoltaic film. EVA photovoltaic film is in the hands of downstream module manufacturers. If a film is bulged, the entire module will be scrapped, which is undoubtedly very heavy for module manufacturers. The second reason for this phenomenon is that The internal long force of the EVA film is too large, resulting in excessive stretching. There are strict requirements for the winding tension control of the equipment. The winder of GWELL machinery can strictly control the tension of the product within 20N, which ensures the yield of the product. At the same time, the functions realized by the fully automatic winder developed by GWELL can minimize the waste of products.

EVA, POE photovoltaic film production line

EPE=EVA+POE+EVA is a three-layer co-extruded solar film. Compared with single-layer EVA and POE films, it achieves high performance and saves costs.

General description of the solar film The EVA POE Solar Film Extrusion Line  Machinery Co., Ltd. adopts the casting process to produce EVA POE solar cell encapsulation film. The EVA film production line can also produce POE film at the same time, realizing a dual-purpose machine, and also taking into account the three-layer co-extrusion of EVA, POE, and EVA, which improves the multiple uses of the product and meets the different needs of customers. At present, the main models of film equipment are divided into 160 single machines, 180 single machines, double 160 co-extrusion, double 180 co-extrusion, and 160/180 co-extrusion types.

China GWELL is a high-tech enterprise integrating management, R&D, design, manufacturing, and commissioning. It can provide high-efficiency and high-quality pre-feasibility research, program demonstration, program design, equipment commissioning and acceptance, and equipment operation training service.

In recent years, GWELL’s equipment has been exported all over the world and exported to Russia, Spain, Turkey, Iran, South Korea, and Indonesia. We customize according to the unique requirements of customers in each industry to make products more intelligent and user-friendly while helping customers reduce costs and improve efficiency.

Parameter

 Extruder Type Single screw extruder GWS150,GWS160,GWS180 Co-extrusion GWS160+GWS160,GWS180+GWS160,GWS180+GWS180
Raw material EVA, POE EVA, POE
Layers EVA or POE single layer EVA or POE single layer,EVA/POE/EVA three layers
Net width 2000mm,2400mm,2600mm
Thickness range 0.2mm-1mm
Max linear speed 10m/min,12m/min,16m/min,18m/min
Application EVA/POE film for solar encapsulation

 

Application

eva poe solar film extrusion line 6

 

Because of EVA/POE film superior adhesion, durability, and optical characteristics, which is mainly used for

  1. China GWELL as film extrusion line manufacturer, EVA glass interlayer film, products are widely used in: deep processing of special glass such as safety flat laminated glass, curved laminated glass, process laminated glass, color-changing laminated glass, conductive smart glass, solar cells and so on.
  2. Hot melt adhesive cast film, embossed film, the products are widely used in: Hygiene products: medical surgical gown, baby diaper film, bottom film of women’s sanitary napkin, adult diaper film, pet pad film, disposable bed sheet, etc. .
  3. Daily necessities: umbrellas, raincoats, suit jackets, various tablecloths, shower caps, shower curtains, aprons, chair covers, etc.
  4. Packaging supplies: dust cover for computer and electrical appliances, soft packaging for cosmetics, shopping bags, gift bags, file bags, etc.

eva poe solar film extrusion line

 

EVA POE solar film extrusion line video

About Gwell

Plastic extrusion equipment production plant

Innovation drives enterprise progress. Relying on the group’s strong technology, equipment strength and innovation spirit, Gwell is committed to the development of high-tech products and the international market. Gwell also actively exchanges and cooperates with world-class scientific research institutions. The new technologies, new processes and new products developed by Gwell are widely used in building materials(PP hollow sheet extrusion machine, PC optic extrusion machine), home appliances(SPC floor extrusion machine), packaging(PET sheet extrusion machine, EVOH film extrusion machine), 

medical treatment(PVC rigid sheet extrusion machine), automobiles(TPU film extrusion machine, PVB film extrusion machine), new energy(EVA solar film extrusion machine), aerospace(TPU film extrusion machine), rail transit(waterproof film extrusion machine) and other fields, which are closely related to human life.

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FAQ

International Commercial Terms(Incoterms): FOB, CFR, CIF, EXW.

Terms of Payment: LC, T/T

Delivery date:1-4 months

We are committed to produce sheet,film,board extrusion machine.Sheet extrusion machine includes PET sheet, PP、PS sheet, PLA biodegradeble sheet, PETG sheet extrusion machine, PVC soft sheet, PMMA、GPPS sheet extrusion line and so on.Film extrusion machine includes EVA、POE solar film, PVB film, TPU film, PETG film, ASA film and so on.Board extrusion machine includes PC solid board, PP、PE board ,etc.and other extrusion machine like floor, hollow, waterproof , foaming, non-woven fabric extrusion making machine.

Our Trading capacity is about 1,000 extrusion lines every year,and Gwell has exported to over 60 countries and regions for nearly 15 years.

It will take 1-4 months to produce,which caused by different reqiurements of customers and design for each extrusion line.

Yes,Gwell sale teams will provide specification according to customer’s requirements,meanwhile we can give the technical support to customers. Beacause we are not only sales but also technicians.If you are interested in our extrusion machine,please contact us.

Yes,Gwell is complete set of customized turn-key engineering project which include hardware& software design, technology commissioning and after-sales service.Otherwise we can provide formula support.

Cindy Liu:Email:cindy@gwell.cn  Whatsapp/phone:+86 15906228639

Lucy Lu:   Email:zl@gwell.cn      Whatsapp/phone:+86 18861956208

24 hours/7 days available

The whole extrusion line that we often adopt ocean shipping for saving cost,The nearest port of departure is China Shanghai,but if urgent cases like small spare parts,we will send to customer factory by air. Otherwise you can either use your own assigned shipping agent or our cooperative forwarder.

Are there any technical supports for extrusion machine that you need?​

Our service will be always at your disposal over the entire extrusion line life.So if you want to know about any other technical supports.Please contact us as soon as possible.

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