Glass Lamination Film

At a time when environmental awareness is increasing, EVA Film has emerged in the field of environmental protection with its unique advantages. Do you know how EVA Film can help the environmental protection cause? Today, let us follow Foundite to find out.


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EVA Film has the property of being degradable, which makes it an environmental pioneer in the packaging field. Traditional plastic packaging waste is often difficult to degrade, causing long-term pollution to the soil and the ocean. After the biodegradable EVA Film enters the natural environment, it can gradually decompose into harmless substances under the action of microorganisms, greatly reducing the environmental burden. For example, some fresh food packaging has begun to use degradable EVA Film, which can not only effectively preserve freshness, but also naturally degrade after being discarded, reducing white pollution. In garbage sorting and resource recycling, degradable EVA Film also reduces the difficulty of recycling and provides convenience for environmental protection. ​
In the agricultural field, EVA Film also plays an environmental protection role. Taking agricultural greenhouse covering film as an example, EVA greenhouse film has excellent thermal insulation performance, which can effectively reduce heat loss in the greenhouse in winter, reduce farmers' dependence on additional heating equipment, and thus reduce energy consumption and carbon emissions. At the same time, its good light transmittance ensures that crops can fully carry out photosynthesis and increase yields. Moreover, the service life of EVA greenhouse film is relatively long, which reduces the waste of resources and waste generation caused by frequent replacement of greenhouse film. According to statistics, farmers who use EVA greenhouse film can reduce their annual energy consumption by about 15% and reduce the frequency of greenhouse film replacement by about 30%. ​
In environmental protection projects, EVA geomembranes are widely used in landfill and sewage treatment tank anti-seepage treatment. The leachate generated by landfills contains a large amount of harmful substances. If it leaks into the ground, it will seriously pollute the soil and groundwater. With its excellent anti-seepage performance, EVA geomembranes can effectively prevent the leakage of leachate and ensure the safety of the surrounding environment. In sewage treatment tanks, EVA geomembranes can prevent sewage from seeping out, while resisting the corrosion of chemical substances in sewage, ensuring the stable operation of sewage treatment facilities, improving sewage treatment efficiency, and reducing sewage pollution to the environment.
At present, due to the unique performance of EVA Film, it has developed rapidly in the field of environmental protection, and the concept of environmental protection has penetrated into the hearts of each of us. We hope that in the future, Foundite will innovate EVA Film with more outstanding technology and create more important milestones in the field of environmental protection!

As the construction industry is booming, building safety has always been a top priority. In particular, the safety of building curtain walls, as an important part of the building facade, is directly related to the overall stability of the building and the safety of people's lives and property. With its excellent earthquake resistance, EVA laminated glass has become a new and reliable line of defense for building curtain wall safety.

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EVA laminated glass is made of two or more layers of glass and EVA film bonded under high temperature and high pressure. EVA film has good flexibility and adhesion. When encountering earthquakes and other vibrations, it can act like a "cushion" to absorb and disperse the impact force generated by the earthquake. Even if the glass breaks, the EVA film can firmly stick the broken glass fragments so that they will not scatter, avoiding secondary damage and effectively ensuring the safety of people inside the building and pedestrians outside.

From the actual application effect, the seismic advantage of EVA laminated glass is very significant. In some construction projects in earthquake-prone areas, the curtain wall using EVA laminated glass only has a small amount of glass cracks after experiencing medium and low-intensity earthquakes, and the overall structure remains intact, effectively reducing the building damage and maintenance costs caused by earthquakes. Compared with ordinary glass curtain walls, EVA laminated glass curtain walls are more stable in terms of seismic resistance, greatly improving the seismic resistance level and safety of buildings.​


In addition, EVA laminated glass not only has excellent earthquake resistance, but also has good sound insulation, heat insulation and optical properties. While providing earthquake protection for building curtain walls, it can also create a quiet and comfortable indoor environment, improve the energy efficiency of buildings, and reduce building energy consumption.


Nowadays, more and more modern buildings choose EVA laminated glass in curtain wall design. With its reliable earthquake resistance and comprehensive advantages, it is protecting the safety of buildings and becoming a new choice for the construction industry to ensure safety and pursue quality.

In the glass processing industry, glass lamination autoclave is a key equipment for producing laminated glass. This equipment uses high temperature and high pressure to make the plastic film and glass fit tightly together, producing laminated glass that is widely used in the fields of construction and automobiles. However, in daily maintenance, some "invisible minefields" that are easily overlooked may affect the performance and service life of the equipment.

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Pressure control is a primary risk. As a pressure vessel, operating an autoclave at overpressure is extremely dangerous. Each piece of equipment has a designed pressure range. For example, typical operating pressures are within a certain range; if the pressure exceeds 10%, the machine must be shut down for inspection. During operation, strict adherence to operating procedures is essential, closely monitoring pressure fluctuations to avoid runaway pressure. Failure to do so can damage the equipment and potentially lead to safety incidents.


Temperature regulation is also crucial. Glass and film are temperature-sensitive. Excessively high temperatures can cause deformation and cracking of the glass, and film performance can be affected. Excessively low temperatures prevent effective fusion of the film and glass. For example, if the heating system utilizes a wraparound electric heating element, the temperature must be uniform and stable to prevent localized overheating or overcooling. Furthermore, the rate of temperature change must be minimal. For example, the jacket medium temperature change rate should be ≤5°C/min to prevent thermal stress cracking of the glass.


Cleaning and maintenance are crucial. After each use, rinse the autoclave with pure water to remove any residue. This is especially important after processing corrosive materials. Cleaning is essential to prevent prolonged contact of acids, alkalis, and other substances with the glass, which can cause corrosion. At the same time, regularly check the wear of the seals. If the mechanical seal leakage is > 5ml/h, it needs to be replaced in time to prevent gas leakage from affecting production and even causing safety problems.


Electrical system maintenance should not be ignored. When electrical equipment is operating normally, the temperature should not exceed the allowable limit. The temperature of switches, wires, motors, etc. should be tested at least once a week, and overheating should be handled in time. In particular, the cooling fan of solid-state relays must run continuously. In addition, check whether the electrical contacts are loose every month, such as the crimping of the electric heater screws in the kettle and the lead-out bolts of the head, to ensure stable electrical connections.


Lubrication and tightening work are also very important. Regularly add high-temperature grease, such as lithium-based grease, to the stirring shaft bearings, and check the bolt tightening every 3 months to prevent parts from loosening and affecting the normal operation of the equipment.


Avoid these "invisible minefields" and do a good job of daily maintenance, so that the glass laminated autoclave can operate stably and efficiently, providing guarantees for the production of high-quality laminated glass.

TPU film is a thin film material made from TPU pellets through a special process, with thicknesses ranging from 0.01 to 2mm. Due to its strength, excellent abrasion resistance, elasticity, and weather resistance, TPU film is widely used in industrial applications such as footwear, garment lamination, automotive, chemical, electronics, and medical.


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It is made from TPU pellets through specialized processes such as calendering, casting, blown film, and coating. TPU film not only possesses excellent physical properties, but also boasts excellent processing and environmental performance, making it widely used in various fields.


Industry


In the industrial sector, TPU film can be used to manufacture products such as protective clothing and tents. TPU film also offers excellent breathability, effectively reducing moisture buildup on the inside, thereby enhancing wearing comfort. This breathability makes TPU film an ideal choice for protective clothing and tents.


Shoe Materials


In the footwear sector, TPU film can be used to manufacture products such as athletic shoes and leather shoes. Its excellent abrasion and tear resistance make it ideal for shoe uppers. It effectively withstands the wear and tear of daily wear while maintaining a long service life.


Apparel


In the garment fitting sector, TPU film can be used to manufacture products such as intimate apparel and swimwear. Seamless underwear is a familiar design for women, popular for its close-fitting and comfortable fit. A major feature of seamless underwear production is that it eliminates the need for sewing needles and thread, utilizing seamless lamination technology. TPU film is a crucial component of this technology!


Automotive


In the automotive industry, TPU film can be used to manufacture automotive parts and paint protection films. It has a wide range of applications in automotive interiors, such as bonding seat fabrics, laminating headliners, and assembling instrument panels. In the bonding of seat fabrics, TPU film provides durable adhesion, ensuring long-term fabric durability.


Chemical


In the chemical industry, TPU film can be used to manufacture waterproof materials, membranes, and other products.


Electronics


In the electronics industry, TPU film can be used to manufacture electronic product casings, screen protectors, and other products. It can be used in screen protectors, keyboard covers, and headphone cable covers for mobile phones, tablets, and other electronic devices, effectively protecting them from scratches and abrasion.


Medical


In the medical field, TPU film can be used to manufacture medical supplies and medical devices. With its excellent biocompatibility and chemical stability, TPU film is used in the manufacture of medical devices such as catheters, wound dressings, and protective gloves.


From industrial protection to everyday wear, from automotive manufacturing to healthcare, TPU film plays an indispensable role in various fields thanks to its excellent physical properties, diverse processing methods, and outstanding environmental protection. With a thin thickness of 0.01 to 2mm, it carries the important mission of improving product performance and optimizing the user experience. It can provide breathable and comfortable protection for protective clothing, impart wear and tear resistance to footwear, provide strong adhesion in automotive interiors, and ensure biosafety in the medical field. With the continuous advancement of technology, the application scenarios of TPU film will continue to expand, and its innovative potential in more niche areas is waiting to be discovered, injecting continuous impetus into industrial upgrading and improving the quality of life.

Ⅰ.Hidden inside the glass, the "all-rounder" EVA, how did it manage to occupy a market worth hundreds of billions of yuan?
The global EVA film market is expected to exceed 100 billion yuan by 2025, with China becoming the core supplier with a production capacity share of over 60%. As a manufacturer deeply involved in EVA glass interlayer films, we are often asked: why has EVA continued to break through in the photovoltaic and building sectors amidst competition from materials like PVB and SGP? The answer lies in its three core advantages: PID resistance, flexible crosslinking system, and multi-component composite capabilities—these are precisely the key technical terms currently attracting the most attention in the industry.

Unlike the moisture-sensitive characteristics of ordinary PVB, the high moisture resistance of EVA glass interlayer films has already been proven by the market. Especially after the global implementation of the new PID resistance standard in 2025, we have significantly improved the volume resistivity of our products by optimizing the ratio of coupling agent, crosslinking agent, and co-crosslinking agent (1.5:1:1 optimal ratio), perfectly avoiding the efficiency degradation problem of photovoltaic modules caused by humid and hot environments. This technological upgrade is no accident: research by institutions in Nanjing and elsewhere has long confirmed that long-chain coupling agents containing unsaturated double bonds can enable EVA to form a "chemical bond-level bond" with glass. The composite stabilizer we added on this basis further improves the ultraviolet absorption efficiency to 98.5%, taking into account both weather resistance and photoelectric conversion protection.




II. The Photovoltaic Industry: From "Encapsulation Fundamentals" to "Core Efficiency Enhancement"
Photovoltaic applications account for 89% of the EVA film market, while double-glass modules and BIPV (Building Integrated Photovoltaics) are becoming new engines driving demand growth. The demand for BIPV is projected to reach 7.2% by 2025, largely due to the technological adaptability of EVA interlayer films:

PID Resistance Customization:
For projects in tropical climates, we offer a series of low-VA content (18%-24%) products. After 1000 hours of damp heat aging testing, the adhesive strength showed no significant decrease, resolving the delamination issue common with traditional EVA in high-temperature and high-humidity environments.



Efficiency Enhancement Technology Integration:
Integrating light-frequency conversion materials into the formulation enables the EVA film to convert ultraviolet light into visible light, delaying aging and improving module photoelectric efficiency. Combined with a white efficiency-enhancing film solution, this achieves a 25% penetration rate breakthrough in distributed photovoltaic scenarios.


Ultra-Thin Breakthrough:
Following industry trends, we have launched 280μm micro-thin products, reducing costs by 15% compared to traditional 330μm films without affecting cross-linking and adhesion performance.

It is worth noting that in double-glass modules, our EVA film, with its compatibility with zero water vapor transmission rate of glass, has become a cost-effective alternative to some POE materials, especially in framed designs.





III. Construction: Enabling Glass to Combine Safety, Aesthetics, and Function
If the photovoltaic field tests EVA's "durability," the architectural field showcases its "creativity." As a core material for switchable glass and decorative laminated glass, EVA's composite capabilities are redefining architectural aesthetics:



Safety and Design in Harmony:
Complementing the high rigidity of SGP, our EVA film can easily embed fabrics, metal mesh, printed PET films, etc., into the glass interlayer, achieving a unified "safe and splash-free + artistic expression" in shopping mall windows and interior partitions—an advantage that PVB materials cannot match;



BIPV Integrated Solution:
In photovoltaic curtain wall projects, our transparent EVA film ensures over 85% light transmittance while stably encapsulating solar cells, enabling the building facade to simultaneously generate electricity, meeting the needs of green buildings such as hospitals and office buildings;



A Choice for Detail-Oriented Individuals:
For damp spaces such as swimming pools and bathrooms, EVA's edge stability completely solves the delamination problem of ordinary PVB, and by adjusting haze parameters, it can also provide a stepless "privacy-lighting" adjustment solution for office partitions.



IV. 2026 Buying Guide: Avoiding Common Mistakes and Choosing the Right EVA Membrane
As manufacturers, we've found that many customers still hold the misconception that "EVA is only suitable for low-end applications." Based on the latest industry standards, please keep these three key selection points in mind:



Check for PID resistance certification:
Look for products that comply with the 2025 versions of European, American, and Chinese standards, focusing on verifying the adhesive strength and volume resistivity data after damp heat aging;



Inquire about the crosslinking system configuration:
For photovoltaic projects, prioritize formulations containing TAIC co-crosslinking agents (the optimal ratio is 0.5% crosslinking agent + 0.6% co-crosslinking agent). For building decoration projects, pay attention to whether the coupling agent type is compatible with the composite material;



Calculate the total life cycle cost:
Although the unit price of EVA is lower than that of SGP, high-quality products (such as high thermal conductivity models containing rare earth modifiers) can extend the module/glass lifespan by 5-8 years, resulting in a lower overall cost.



Ⅴ.Conclusion: Unlocking More Possibilities Through Technological Innovation
From the "anti-attenuation guardian" of photovoltaic modules to the "creative carrier" of architectural design, the value of EVA glass interlayer is being rediscovered. In 2025, we will continue to deepen our expertise in recycling technology (aiming for a 95% material recycling rate) and low-carbon formulations to address the EU's CBAM carbon cost challenges while providing global customers with solutions more aligned with dual carbon objectives.

If you are looking for EVA encapsulation films for BIPV projects, or require custom-colored films for decorative laminated glass, please contact us—using professional EVA technology to ensure every piece of glass combines performance and temperature control.