With the rapid development of global construction safety regulations, automotive lightweight trend and photovoltaic new energy industry, the market demand for high-performance functional polymer films is growing at an accelerated pace. PVB interlayer film for safety glass, EVA and POE encapsulant films for solar modules, as core functional materials for product performance improvement, have put forward extremely high requirements for production equipment in terms of thickness uniformity, material purity, performance stability and production efficiency. Different from ordinary packaging films, PVB, POE and EVA materials have strong specificity, high sensitivity to temperature and shear, and strict requirements for molding process. Ordinary general-purpose plastic film extrusion machines can hardly meet the production standards of such high-value functional films, which are likely to cause problems such as uneven performance, high defective rate and unstable product quality, and bring huge raw material waste and economic losses to production enterprises.
For functional film production enterprises, choosing professional extrusion equipment matched with material characteristics is the premise of ensuring product quality and gaining market competitive advantage. At present, imported high-end functional film production lines have excellent performance but high price, long delivery cycle and high later maintenance cost, which set a high threshold for most growing enterprises. Domestic equipment is often modified from ordinary film equipment, lacking targeted design for special materials, and it is difficult to meet the long-term stable production of high-quality films. In this context, customized extrusion equipment solutions based on material characteristics and process requirements have become the most cost-effective choice for the industry. Through targeted optimization of plasticizing system, die head structure, temperature control and winding system, the equipment can perfectly adapt to the processing characteristics of special materials, achieve stable mass production at a lower investment cost, and significantly improve the return on investment of the project.
As a professional manufacturer focusing on the research, development and manufacturing of plastic extrusion equipment, Yuansu has in-depth technical accumulation in the field of plastic film extrusion lines and plastic sheet extrusion lines. Relying on years of experience in extrusion process research and development and equipment manufacturing, the company has launched a series of special extrusion equipment for PVB, POE and EVA functional films for safety glass and photovoltaic industries. According to different material characteristics and customer product specifications, Yuansu can provide fully customized solutions from process design, equipment configuration to installation and commissioning, helping customers achieve high-quality, high-yield and low-consumption production of functional films. This paper will systematically analyze the market demand background of functional films and the processing difficulties of different materials, explain in detail the core technical design and industry targeted solutions of Yuansu custom extrusion equipment, provide detailed equipment specification parameters and investment benefit analysis, and introduce operation and maintenance guidelines and full-process service support, so as to provide comprehensive decision-making reference for enterprises in the glass deep processing and photovoltaic supporting industries to select production equipment.
1. Industry Demand and Market Development Background of Functional Films
1.1 Safety Glass Industry’s Growing Demand for PVB Films
PVB, namely polyvinyl butyral film, is the core interlayer material of laminated safety glass. When the glass is impacted and broken, the PVB film can bond the glass fragments firmly, avoiding the splashing of fragments and causing injury to personnel, and also has excellent sound insulation, heat insulation and anti-ultraviolet properties. With the continuous improvement of global building safety codes and automotive safety standards, laminated safety glass has been more and more widely used. In the field of construction, laminated glass has become a mandatory safety material for curtain walls, overhead partitions and floor glass of high-rise buildings. In the automotive field, front windshields of all passenger cars must use laminated glass, and more and more models also use laminated glass for side windows to improve safety and sound insulation performance.
Benefiting from the growth of construction and automobile industries, the global demand for PVB films maintains a steady growth rate of more than 6% every year. At the same time, the market is also putting forward higher requirements for PVB film products. Ordinary transparent PVB films can no longer meet all demands. Color PVB films, sound insulation PVB films, heat insulation PVB films and other differentiated products are emerging, which puts forward higher requirements for the flexibility and multi-material adaptation ability of production equipment. For PVB film manufacturers, only by equipping with professional and adjustable extrusion production lines can they adapt to the rapidly changing market demand and maintain competitive advantage. The plastic film extrusion machine specially designed for PVB materials can not only ensure the uniformity and mechanical properties of the film, but also flexibly adjust the formula and thickness to meet diversified product demands.
1.2 Booming Photovoltaic Industry Drives Demand for EVA and POE Encapsulant Films
The photovoltaic industry is the largest application field of EVA and POE functional films. EVA and POE films, as photovoltaic module encapsulant materials, are used to package solar cells between glass and backsheet, playing the roles of bonding, insulation, water vapor barrier and impact resistance, which directly determine the service life and power generation efficiency of photovoltaic modules. In recent years, the global installed capacity of photovoltaics has maintained rapid growth, driving the demand for encapsulant films to rise year by year. At the same time, the iterative upgrading of photovoltaic technology has also put forward higher requirements for encapsulant film performance.
Traditional EVA encapsulant film has the advantages of good light transmission, strong adhesion and low cost, and is still the mainstream product in the market. However, EVA material has poor water vapor barrier performance, and is prone to hydrolysis and aging under high temperature and high humidity environment, which can not meet the requirements of high-efficiency double-sided modules and N-type cells for long-term reliability. POE film has more excellent water vapor barrier performance, weather resistance and PID resistance, and is more suitable for high-efficiency double-glass modules and N-type cell modules. With the continuous improvement of the proportion of high-efficiency modules in the market, the demand for POE films is growing faster than that of EVA films. Many photovoltaic film enterprises are expanding their production capacity and upgrading their production lines. For production enterprises, it is particularly important to have a set of plastic film extrusion line that can stably produce high-quality EVA and POE films. Equipment with good adaptability can help enterprises quickly switch between different products and seize market opportunities.
1.3 Limitations of Conventional General-Purpose Extrusion Equipment
At present, many enterprises try to use modified ordinary film extrusion equipment to produce PVB, EVA and POE functional films, but they are often faced with many insurmountable problems. First, the plasticizing quality is poor. Ordinary screw design is not aimed at the characteristics of special materials, which is easy to cause insufficient plasticization or excessive shear degradation of materials, resulting in the decline of mechanical properties and optical properties of finished films, which can not meet the use standards. Second, the thickness uniformity is poor. The ordinary die head has low precision and lacks targeted flow channel optimization, resulting in large thickness deviation of finished products, which not only causes waste of raw materials, but also affects the product performance consistency. For photovoltaic encapsulant films, thickness deviation will also lead to uneven packaging pressure and affect the yield of modules.
Third, the temperature control accuracy is low. PVB, EVA and other materials are very sensitive to temperature. Excessive temperature will lead to material crosslinking or degradation, affecting product performance. Ordinary equipment has rough temperature control and large temperature fluctuation, which is easy to cause unstable product quality between batches. Fourth, the function is single and the flexibility is poor. Ordinary equipment is usually only suitable for one or two conventional materials, and can not take into account the production of a variety of functional films, and the equipment utilization rate is low. Fifth, the energy consumption is high and the operation cost is high. The backward drive and heating system leads to high unit product energy consumption, which erodes the profit space of enterprises. Therefore, professional customized extrusion equipment is the inevitable choice for functional film production enterprises to achieve high-quality and efficient production.
2. Material Characteristics and Processing Difficulties of PVB, POE and EVA
2.1 PVB Material: High Moisture Sensitivity and Toughness Control
PVB resin has excellent transparency, toughness and adhesion to glass, but its processing conditions are relatively harsh. First, PVB material is very sensitive to moisture. It is easy to absorb moisture in the air, and the moisture will cause bubbles and silver lines in the film during high-temperature extrusion, seriously affecting the appearance and mechanical properties of the product. Therefore, the whole extrusion process must strictly control the moisture content of raw materials, and the equipment needs to be matched with a professional drying and feeding system to ensure that the material is always in a dry environment from storage to extrusion.
Second, PVB has high requirements for shear and temperature control. Excessive shear strength will lead to molecular chain breakage and reduce the mechanical toughness of the product. Excessive temperature will also cause material degradation and discoloration. Therefore, the screw design needs to adopt a low-shear plasticizing structure to ensure uniform plasticization while avoiding excessive shear heat generation. Third, PVB melt has high viscosity and poor fluidity, which requires higher pressure stability of the extrusion system. Uneven pressure will lead to thickness fluctuation of the film. In addition, PVB film has strong viscosity, which is easy to adhere to the roller surface during molding and winding, and the equipment needs to be equipped with corresponding anti-stick treatment and release agent adding device to ensure smooth production. These characteristics determine that the ordinary plastic film extrusion machine can not meet the high-quality production of PVB films, and must be customized from multiple links such as feeding, plasticizing to molding and winding.
2.2 EVA Material: Crosslinking Control and Uniform Dispersion of Additives
EVA, namely ethylene vinyl acetate copolymer, is the most widely used photovoltaic encapsulant material. Its biggest processing feature is that it is easy to crosslink at high temperature. Once the temperature exceeds the critical value, the material will undergo crosslinking reaction in advance in the extruder, resulting in gel particles and fish eyes in the finished film, which seriously affects the product quality. Therefore, the extrusion process must accurately control the processing temperature within a narrow range to avoid local overheating leading to premature crosslinking of materials.
At the same time, EVA encapsulant films need to add a variety of functional additives such as crosslinking agent, coupling agent and anti-aging agent. The uniform dispersion of these additives directly determines the performance of the finished film. If the mixing effect of the extruder is not good, the uneven distribution of additives will lead to inconsistent performance of all parts of the film, and even local performance failure, affecting the service life of photovoltaic modules. In addition, EVA melt has low viscosity and fast fluidity, which puts forward higher requirements for the stability of die head discharge and traction system. Slight speed fluctuation will cause obvious thickness deviation. Therefore, EVA special plastic film extrusion line needs to be optimized in terms of temperature control accuracy, mixing uniformity and transmission stability to meet the high-quality production requirements of photovoltaic grade films.
2.3 POE Material: High Barrier Requirement and High Precision Molding
POE, namely polyolefin elastomer, is a new generation of photovoltaic encapsulant material with excellent water vapor barrier performance and weather resistance. Compared with EVA, POE material has higher processing difficulty. First, POE has higher requirements for plasticizing and mixing effect. It is necessary to ensure that various functional additives are evenly dispersed in the POE matrix, otherwise the barrier performance and aging resistance of the product will be reduced. Second, POE melt has special rheological properties, and the flow channel design of the die head needs to be optimized pertinently to ensure uniform discharge in the width direction and consistent thickness.
Third, POE films usually have higher requirements for thickness uniformity, and the thickness deviation needs to be controlled within a smaller range to ensure the packaging effect of high-efficiency modules. Fourth, POE materials have higher requirements for the cleanliness of the whole production system. Any tiny impurity will become a defect point on the film, affecting the insulation and packaging performance. Therefore, the flow channel of the whole extrusion system needs to be designed without dead angle to avoid material retention and carbonization, and the whole production environment needs to be clean. In addition, many enterprises need to produce both EVA and POE films on the same production line, which requires the equipment to have good material switching adaptability and can quickly complete the cleaning and process switching between different materials. These requirements have promoted the development of customized extrusion equipment solutions.
3. Core Technical Design of Yuansu Custom Functional Film Extrusion Equipment
Yuansu has carried out in-depth targeted research on the processing characteristics of PVB, POE and EVA materials, and comprehensively optimized the whole plastic film extrusion line from multiple core systems such as feeding drying, screw plasticizing, die head molding, thickness control and winding winding, so as to ensure that the equipment can perfectly adapt to the processing of various special functional films and achieve stable, efficient and low-consumption production.
3.1 Material-Specific Screw and Barrel Plasticizing System
The screw is the core of the extrusion equipment, which directly determines the plasticizing quality and production efficiency. Yuansu designs special screw structures for different materials to achieve the best plasticizing effect. For PVB materials, a low-shear gradual melting screw is adopted, with a multi-stage barrier structure, which can realize uniform melting of materials under relatively low shear strength, avoid molecular chain degradation caused by excessive shear, and maintain the excellent toughness of PVB materials. The screw is specially designed with a gentle mixing section, which can realize uniform dispersion of additives without bringing too much shear heat, ensuring the stability of material performance.
For EVA materials, the screw adopts a low-temperature plasticizing design with optimized compression ratio, which can achieve full plasticization at lower processing temperature, avoid premature crosslinking of materials caused by local overheating, and reduce the generation of gel particles. The multi-stage distributive mixing structure ensures the uniform dispersion of various additives, and the performance of the finished film is more stable. For POE materials, the screw adopts a combined design of barrier section and mixing section, which can not only ensure sufficient plasticization, but also achieve good mixing effect, so that various functional additives can be evenly dispersed in the POE matrix, ensuring the barrier and weather resistance of the product. The barrel is matched with high-efficiency heating and cooling structure, with multi-zone independent temperature control to ensure uniform temperature of materials in the axial direction. The inner wall of the barrel is treated with wear-resistant and corrosion-resistant alloy, which has long service life and ensures long-term stable plasticizing performance.
3.2 Multi-Layer Co-Extrusion Distribution Technology for Functional Design
High-end functional films usually adopt multi-layer co-extrusion structure to realize the superposition of different functions through different material layers. For example, PVB sound insulation film adopts a three-layer structure of core sound insulation layer plus surface bonding layer, and photovoltaic POE co-extruded film adopts a multi-layer structure with different functional layers to balance adhesion and barrier performance. Yuansu provides corresponding multi-layer co-extrusion schemes according to the product structure requirements of customers, and is equipped with a special co-extrusion distributor to realize uniform compounding of melts of different materials without disturbing the interface between layers.
The distributor adopts spiral layered structure, and the flow channel is optimized by fluid dynamics simulation to ensure that the flow rate and pressure of each layer of material are consistent when entering the die head, and the thickness proportion of each layer is uniform and stable. The number of layers and flow channel size can be customized according to customer product solutions, supporting 2-layer, 3-layer, 5-layer and other different co-extrusion structures. Each layer is equipped with an independent extruder and independent control system, which can independently adjust the extrusion volume and process parameters of each layer, accurately control the thickness proportion of each functional layer, and achieve the best product performance. The multi-layer co-extrusion technology enables enterprises to produce high value-added functional films with more complex structures and improve product market competitiveness.
3.3 High-Precision Die Head with Automatic Gap Adjustment
The die head is the key component to determine the thickness uniformity of the film. Yuansu functional film special die head adopts hanger type flow channel design optimized by fluid dynamics simulation. The flow channel is smooth and transition naturally, without dead angle of material retention, ensuring uniform flow of melt in the width direction and consistent discharge speed from the middle to both sides. The die head body is made of high-quality alloy steel as a whole, which is processed by overall forging and precision machining, with high structural rigidity and no deformation under long-term high-pressure working conditions.
The die lip part adopts flexible adjustment mechanism, which is equipped with multiple independent adjustment units along the width direction. The standard configuration is manual fine adjustment, and the optional configuration is automatic thermal expansion adjustment system. The automatic die lip adjustment system is linked with the on-line thickness gauge, which can automatically fine adjust the die lip gap according to the real-time thickness detection data, correct the transverse thickness deviation, and control the transverse thickness deviation of the film within ±2%, reaching the international advanced level. For the production of wide-width films, a multi-stage shunt structure is adopted to ensure the uniformity of material distribution in a wider width range and avoid the problem of thickness difference between the middle and both sides. The die head is also equipped with a multi-zone independent temperature control system to ensure the consistency of melt temperature in the width direction and avoid thickness fluctuation caused by temperature difference.
3.4 Precision Closed-Loop Temperature Control System
Accurate temperature control is crucial for heat-sensitive materials such as PVB, EVA and POE. Yuansu extrusion equipment adopts multi-zone independent PID closed-loop temperature control system, each heating zone is independently controlled, the temperature control accuracy can reach ±0.5℃, and the temperature fluctuation in long-term continuous production is very small. The heating element adopts high-efficiency ceramic heater with fast heating speed and uniform heating. The cooling system adopts forced air cooling or water cooling, with sensitive response, which can quickly cool down when the temperature is too high, avoiding material degradation caused by temperature overshoot.
For materials that are easy to crosslink and degrade, the system also has over-temperature protection and early warning function. Once the temperature exceeds the safety threshold, it will automatically alarm and take protective measures to avoid quality problems of a large number of products. The melt temperature and pressure at the die head are monitored in real time, and the screw speed is automatically fine adjusted through the pressure closed loop to maintain the stability of melt output pressure, so as to ensure the uniform longitudinal thickness of the film. The high-precision temperature control system not only ensures the stable quality of products, but also reduces the generation of waste products in the start-up and commissioning stage, and saves raw material costs.
3.5 Servo Energy-Saving Drive and Stable Traction System
Yuansu plastic film extrusion machines are all equipped with high-performance servo drive systems. Compared with the traditional variable frequency drive system, the servo motor has higher energy efficiency, faster response speed and more stable speed output. It can automatically adjust the output power according to the actual load demand, avoiding energy waste during no-load and low-load operation. The overall energy consumption of the equipment is reduced by 20% to 30% compared with ordinary equipment, which greatly saves the production electricity cost.
The traction system adopts multi-roller servo synchronous traction, and the speed synchronization accuracy between each traction roller is extremely high, which can maintain stable tension on the film, avoid longitudinal thickness fluctuation caused by speed change, and ensure the stable size of the finished film. The winding system adopts constant tension control, which automatically adjusts the winding torque with the increase of winding diameter to ensure flat and tight film roll, no wrinkle and no stretch deformation. For films with strong viscosity such as PVB, a release paper compound winding mechanism can be configured to avoid adhesion between film layers. The stable drive and traction system ensures the stability of the whole production process, reduces the defective rate, and also improves the production speed and unit time output.
3.6 On-Line Thickness Detection and Quality Closed-Loop Control
For high-end functional film production, on-line thickness detection is an essential quality control link. Yuansu can be equipped with high-precision on-line thickness detection system according to customer needs. It uses infrared or beta ray thickness gauge to scan the film in real time along the width direction, and continuously detects the thickness data of all positions of the film. The detection data is transmitted to the control system in real time and displayed in the form of visual image, which is convenient for operators to grasp the product quality status at any time.
The system can be connected with the automatic die lip adjustment system to form a complete closed-loop control of thickness. When the thickness deviation is detected, the system automatically adjusts the corresponding position of the die lip to correct the deviation, without manual intervention. This not only reduces the dependence on the experience of operators, but also greatly shortens the debugging time after starting up and changing materials, and reduces the waste of raw materials. The system also has the functions of quality data statistics and storage, which can generate quality reports for each roll of products, which is convenient for quality traceability and management, and helps enterprises improve the quality management system. For industries with strict quality requirements such as photovoltaics and automotive glass, the on-line quality control system is of great value.
4. Targeted Custom Solutions for Different Industries
4.1 PVB Film Extrusion Line for Safety Glass Industry
For the production needs of architectural and automotive safety glass PVB films, Yuansu provides a special extrusion production line solution with complete configuration from drying and feeding to winding and packaging. The whole line is equipped with dehumidification and drying feeding system, which strictly controls the moisture content of raw materials to avoid bubbles in the film. The special PVB screw ensures low-shear uniform plasticization and maintains the toughness and transparency of the product. It can be equipped with single-layer or 3-layer co-extrusion structure to meet the production needs of ordinary transparent PVB films and functional PVB films such as sound insulation and heat insulation.
The width of finished products ranges from 1000mm to 2500mm, and the thickness ranges from 0.38mm to 1.52mm, which can cover most conventional PVB film specifications on the market. The production line is equipped with anti-stick treatment device and release paper unwinding mechanism, which can compound release paper while winding to avoid film adhesion. It is equipped with on-line thickness detection and automatic adjustment system to ensure stable product thickness. The hourly output of the medium-sized PVB film extrusion line is about 300 to 500 kg, and the hourly output of the large-scale production line can reach 800 to 1200 kg. This set of solution has excellent cost performance, and the product performance can meet the national standards for safety glass interlayer films, which is very suitable for glass deep processing enterprises and professional PVB film manufacturers to expand production capacity.
4.2 EVA Encapsulant Film Extrusion Line for Photovoltaic Industry
Aiming at the production demand of conventional photovoltaic EVA encapsulant films, Yuansu provides a special EVA plastic film extrusion line scheme. The whole line adopts low-temperature plasticizing design, which strictly controls the processing temperature throughout the process, avoids premature crosslinking of EVA materials in the extrusion process, and reduces gel particles and fish eyes in finished products. The special mixing screw ensures the uniform dispersion of various additives such as crosslinking agent and anti-aging agent, and ensures the stable performance of the finished film.
The production line supports single-layer or multi-layer co-extrusion structure, with finished product width of 1500mm to 2500mm and thickness of 0.3mm to 0.8mm, which can meet the packaging needs of conventional photovoltaic modules. It is equipped with high-precision die head and on-line thickness detection system, with high product thickness uniformity, which can effectively reduce the unit consumption of products and save costs for downstream module enterprises. The winding system adopts double-station non-stop roll changing, which can realize continuous production and reduce material waste during roll changing. The medium-sized EVA film production line has an hourly output of 400 to 600 kg, and the large-scale production line has an hourly output of 800 to 1200 kg. The products produced by the equipment can meet the quality standards of photovoltaic grade encapsulant films, and have the advantages of high yield and low energy consumption, which can help customers quickly occupy the market.
4.3 POE Film Extrusion Line for High-Efficiency Photovoltaic Modules
For the production of high-end POE encapsulant films for high-efficiency double-glass modules and N-type modules, Yuansu provides a more high-precision POE special extrusion line solution. On the basis of EVA line, this scheme further optimizes the plasticizing system and die head structure to adapt to the rheological characteristics of POE materials. The screw adopts a more efficient mixing structure to ensure the uniform dispersion of barrier additives and anti-aging additives, and give full play to the excellent barrier and weather resistance of POE materials.
The whole production system adopts dead angle free flow channel design to avoid material retention and carbonization, reduce the generation of crystal points and impurities, and ensure the high cleanliness of products. The die head adopts higher precision machining and adjustment mechanism, with smaller thickness deviation, which can meet the strict requirements of high-efficiency modules for encapsulant film accuracy. The production line can also be designed to be compatible with EVA and POE production. By optimizing the cleaning structure and quick material change scheme, it can quickly switch between EVA and POE materials, reduce the material change time and waste, and help enterprises flexibly arrange production according to market demand. This flexible production capacity is of great value for enterprises to respond to the rapidly changing photovoltaic market.
4.4 Multi-Material Compatible Flexible Production Line for Diversified Enterprises
For enterprises with diversified product layout and need to produce a variety of functional films at the same time, Yuansu provides a multi-material compatible flexible plastic film extrusion line solution. Through modular design and quick change structure, the production line can adapt to the production of PVB, EVA, POE and other different functional films by replacing corresponding screw components and adjusting process parameters. One equipment can realize multiple uses, greatly improving the utilization rate of equipment and reducing repeated investment.
The production line is equipped with a quick cleaning mechanism, which can quickly and thoroughly clean the residual materials inside the extruder and die head when switching materials, avoiding cross contamination between different materials. The control system stores process formulas of various materials. When switching products, you only need to call the corresponding formulas, which greatly shortens the commissioning time. This scheme is especially suitable for growing enterprises with rich product lines and uncertain market demand. It can expand product types step by step with the development of the enterprise, reduce the initial investment risk, and have very high flexibility and cost performance.
5. Equipment Specifications, Investment Cost and Return Analysis
5.1 Main Model Specifications and Price Reference
Yuansu functional film extrusion equipment has a variety of specifications to choose from, and the specific price varies according to output, width, configuration level and customized requirements. The following is the price reference range of standard configuration for mainstream models.
Small and medium-sized single-layer functional film extrusion line, with finished film width of 1000mm to 1500mm and hourly output of 150 to 300 kg, is suitable for small enterprises and pilot production. The standard configuration price ranges from 160,000 to 260,000 US dollars. If multi-layer co-extrusion and on-line thickness detection functions are added, the price will increase by 40,000 to 80,000 US dollars accordingly.
Medium-sized standard functional film extrusion line, with finished film width of 1800mm to 2200mm and hourly output of 350 to 600 kg, is the mainstream model suitable for most production enterprises. The standard configuration price of single-layer structure ranges from 320,000 to 480,000 US dollars. The price of 3-layer co-extrusion structure with automatic thickness detection system ranges from 450,000 to 680,000 US dollars. This specification has the widest application range and the highest cost performance, and can meet the production needs of most conventional PVB, EVA and POE films.
Large-scale high-capacity extrusion line, with finished film width of 2500mm to 3500mm and hourly output of 800 to 1500 kg, is suitable for large-scale production of leading enterprises. The price of standard configuration ranges from 750,000 to 1,200,000 US dollars, which varies according to the number of layers and automation configuration. Compared with imported equipment of the same specification, Yuansu equipment can save 40% to 60% of procurement cost, and the performance reaches more than 85% of imported equipment, which has very obvious cost performance advantage.
5.2 Initial Investment Breakdown
Taking the medium-sized 2000mm width 3-layer co-extrusion functional film production line as an example, the initial investment is calculated in detail. The main equipment cost, including main extruder, co-extruder, distribution device, die head, cooling system, traction system, winding system and control system, accounts for about 80% of the total investment, about 440,000 to 540,000 US dollars.
Supporting auxiliary equipment, including raw material drying and feeding system, on-line thickness detection system, release paper unwinding device and cooling water tower, air compressor and other public equipment, accounts for about 12% of the total investment, about 66,000 to 81,000 US dollars. Installation, commissioning and personnel training costs account for about 5% of the total investment, about 27,500 to 33,750 US dollars, which are usually included in the overall quotation. Initial raw material reserve and spare parts reserve account for about 3%, about 16,500 to 20,250 US dollars. Overall, the total initial investment of the medium-sized standard 3-layer co-extrusion production line is about 550,000 to 675,000 US dollars. If it is a single-layer basic configuration, the total initial investment can be controlled at about 350,000 to 450,000 US dollars.
5.3 Annual Operating Cost Calculation
Calculated on the basis of 300 working days per year, 20 hours per day and 6,000 hours of annual effective production time, the medium-sized production line has an average hourly output of 450 kg and an annual output of about 2,700 tons.
Raw material cost is the main part of production cost. Calculated by the average raw material price of 1,800 US dollars per ton, the annual raw material cost is about 4,860,000 US dollars. Electricity cost: the comprehensive power consumption per ton of finished products is about 280 kWh. Calculated at the industrial electricity price of 0.1 US dollars per kWh, the annual electricity cost is about 151,200 US dollars. Compared with ordinary non energy-saving equipment, it can save about 50,000 to 70,000 US dollars in electricity bills every year.
Labor cost: the production line is highly automated, with 2 operators per shift and 4 people in total for two shifts. Calculated by the annual salary of 6,000 US dollars per person, the annual labor cost is 24,000 US dollars. Maintenance and spare parts cost: under normal use and standardized maintenance, the annual maintenance cost accounts for about 2% to 3% of the equipment price, about 11,000 to 16,200 US dollars. Other expenses including site rent, management expenses and raw material loss are about 80,000 US dollars per year. Excluding raw material costs, the annual fixed operating cost is about 266,200 to 271,400 US dollars. Thanks to the high degree of automation and low energy consumption of the equipment, the unit operating cost is at a low level in the industry.
5.4 Revenue Estimation and Investment Payback Period
Calculated by the average ex-factory price of conventional functional film of 2,400 US dollars per ton, the annual sales revenue is about 6,480,000 US dollars. After deducting raw material cost and fixed operating cost, the annual gross profit is about 1,348,600 to 1,353,800 US dollars. If producing high value-added functional films such as POE and sound insulation PVB, the product profit margin is higher and the profit level will be more considerable.
Calculated on the basis of total initial investment of 610,000 US dollars, the static investment payback period is about 5.5 months. Even considering factors such as capacity climbing and market fluctuation in the initial stage of production, calculated by 60% of capacity utilization in the first year, the investment can be recovered in about 9 to 11 months. Even for the basic configuration of small production lines, the investment return cycle is basically controlled within 12 to 15 months. It can be seen that the customized functional film extrusion equipment has a very high return on investment. Compared with purchasing ordinary equipment and repeatedly modifying and adjusting, choosing professional customized solutions at one time can achieve stable production faster and obtain higher returns.
6. Installation, Commissioning and Operation Maintenance Guidelines
6.1 Site Planning and Installation Preparation
Before the equipment arrives, Yuansu will provide customers with detailed site planning drawings and installation requirements according to the selected model and site conditions. Customers need to prepare the plant site according to the drawings to ensure that the ground is flat and solid and can bear the weight of the equipment. Reserve corresponding power supply, cooling water and compressed air interfaces near the equipment location, and the capacity shall match the rated parameters of the equipment. For functional film production, it is also necessary to ensure the cleanliness of the production workshop to avoid dust pollution affecting product quality.
After the equipment arrives, Yuansu will arrange professional engineers to guide the installation and commissioning on site. The installation and commissioning cycle of standard models is about 15 to 20 working days. For customized large-scale production lines, the cycle is appropriately extended according to the complexity. The engineer will be responsible for the assembly and commissioning of the whole line of equipment. After the commissioning is completed, trial production will be carried out with materials to ensure that the output and product quality meet the agreed standards. During the installation and commissioning period, the engineer will synchronously carry out technical training for the customer’s operation and maintenance personnel to ensure that the personnel can master the operation essentials and daily maintenance knowledge after the engineer leaves.
6.2 Standardized Operation and Preventive Maintenance
Standardized operation and scientific maintenance are the keys to ensure the long-term stable operation of the equipment and maintain product quality. Operators must operate in strict accordance with the operation manual. Before starting the machine, preheat step by step according to the specified temperature curve, and start production after the temperature reaches the set value and is stable for a period of time. During production, pay close attention to temperature, pressure, thickness and other parameters, and make records. When changing materials and shutting down, clean the equipment according to standard procedures to avoid material residue and carbonization.
Daily maintenance includes checking the equipment status before each shift, cleaning the equipment surface, and checking whether there is abnormal sound and vibration during operation. Weekly maintenance includes cleaning the filter screen of the feeding system, checking the fastening of each connector, and checking the operation of the cooling system. Monthly maintenance includes checking the wear of screw and barrel, calibrating temperature and pressure sensors, and checking the operation status of each drive motor. Quarterly maintenance includes thorough cleaning of the die head and flow channel, and replacement of worn seals. Annual overhaul requires comprehensive inspection of all components, replacement of aging vulnerable parts, and comprehensive calibration of equipment accuracy. Yuansu will provide customers with a detailed maintenance manual to guide customers to do a good job in daily maintenance, extend the service life of equipment and maintain stable performance.
6.3 Common Production Problems and Solutions
In the production process, some common problems are often encountered, which can be solved through targeted adjustment. For example, bubbles in the film are usually caused by excessive moisture content of raw materials or high processing temperature. It is necessary to strengthen raw material drying or appropriately reduce the processing temperature. Fish eyes and gel particles are usually caused by material crosslinking or impurity mixing. It is necessary to check the temperature setting, clean the flow channel and strengthen raw material filtration.
Large thickness deviation can be solved by adjusting die lip gap, traction speed and extrusion speed. If the longitudinal thickness fluctuates, check whether the traction tension is stable and whether the screw speed fluctuates. If the transverse thickness is uneven, adjust the die lip temperature and gap. If the film surface has scratches, check whether there are impurities on the die lip and guide roller surface, and clean them in time. Most problems can be solved by adjusting process parameters and daily maintenance. Yuansu after-sales team can also provide remote guidance to help customers quickly solve various problems in production.
7. Advantages of Choosing Yuansu as Extrusion Equipment Supplier
7.1 Customized R & D Capability for Special Materials
Different from ordinary general-purpose equipment manufacturers, Yuansu focuses on in-depth research on extrusion processes of various materials, and has strong customized R & D capability. The company has a professional R & D team composed of senior extrusion process engineers, which can carry out targeted equipment design and process matching according to customers’ different material types, product specifications and performance requirements. Whether it is PVB, EVA, POE or other special functional films, we can provide the most appropriate solution.
Before the scheme is determined, the company can carry out material test verification on the pilot equipment to ensure that the final equipment can meet the customer’s product quality requirements. For customers with special needs, we can also carry out special customized transformation of equipment, including increasing the number of layers, expanding the width, adding special functional devices, etc., to meet the personalized production needs of customers. Strong customized R & D capability ensures that each set of equipment delivered by Yuansu can perfectly match the customer’s actual production needs and achieve the best production effect.
7.2 Strict Quality Control and Reliable Equipment Performance
Yuansu always adheres to quality-oriented, and implements strict quality control on each set of equipment from parts procurement to assembly and commissioning. Core components such as electrical system, drive system and bearing are selected from well-known brands at home and abroad with stable and reliable performance. Key structural parts are processed by high-precision machine tools to ensure assembly accuracy and operation stability. Each equipment must undergo strict factory inspection and long-time continuous operation test before delivery, and can leave the factory only after all performance indicators meet the design standards.
Strict quality control ensures that each delivered equipment has reliable performance and low failure rate, can maintain long-term stable operation under high load conditions, and reduces the production interruption and maintenance cost caused by equipment failure. For functional film production enterprises, stable equipment means stable product quality and continuous profit creation.
7.3 Full Lifecycle Service and Technical Support
Yuansu provides customers with full lifecycle services from pre-sales scheme design to after-sales operation support. In the pre-sales stage, professional engineers will deeply understand customer needs, recommend the most appropriate equipment configuration and process scheme, and provide detailed output and benefit calculation to help customers make accurate investment decisions.
In the after-sales stage, in addition to conventional installation, commissioning and training services, the company also provides a 12-month free warranty period. During the warranty period, quality problems under normal use are subject to free maintenance and parts replacement. After the warranty period, lifetime technical support and preferential supply of spare parts are provided. The after-sales team responds to customer fault feedback within 24 hours, gives priority to remote diagnosis to solve problems, and arranges on-site service if necessary. The company also provides regular return visit service to understand the operation of the equipment and put forward optimization suggestions to help customers maximize the value of equipment investment.
Conclusion
With the continuous development of safety glass and photovoltaic industries, the market demand for PVB, POE and EVA functional films will continue to grow, and the requirements for product quality and production efficiency will be higher and higher. Ordinary general-purpose plastic film extrusion machines can no longer meet the production needs of high-quality functional films. Professional customized extrusion equipment solutions have become an inevitable choice for industry development.
As a professional plastic extrusion equipment manufacturer, Yuansu has in-depth technical accumulation in the field of functional film extrusion. Through targeted optimization design for different material characteristics, it provides customized plastic film extrusion line solutions for safety glass and photovoltaic industries, with excellent performance in plasticizing quality, thickness uniformity, energy consumption level and operation stability, and has extremely high cost performance. Whether it is PVB film production for safety glass, EVA and POE encapsulant film production for photovoltaic industry, or multi-material compatible flexible production line, Yuansu can provide matching equipment solutions and perfect technical services to help customers achieve high-quality, efficient and low-cost production. Choosing Yuansu as a partner means not only choosing a set of high-quality production equipment, but also choosing a reliable technical partner to grow together with the enterprise. With professional technology and sincere service, Yuansu helps functional film production enterprises gain competitive advantage in the market and achieve sustainable development of performance and benefits.
