How much do you know about laminated film?
Today we are going to look at laminated films, we will introduce three types of laminated films and their respective advantages, let's look down.
As a high-performance interlayer material, PVB (polyvinyl butyral) adhesive film is widely used in many fields, which fully demonstrates its unique properties and advantages. In the application of architectural laminated glass, PVB adhesive film, through its excellent adhesive properties, firmly bonds two or more pieces of glass together to form a safe and stable composite structure. In the event of an accidental impact or natural disaster, even if the outer glass layer breaks, PVB film can effectively prevent debris from splashing, greatly reducing the risk of injury to the human body and significantly improving the safety of the building. At the same time, PVB film also has good soundproofing properties, which can effectively block external noise and create a more peaceful environment for the interior.
In the automotive industry, PVB films are also indispensable for the manufacture of safety laminated glass. The use of PVB film for front windscreens and side windows not only enhances the impact resistance of the glass, ensuring the safety of the occupants, but also protects the interior decorations from sunlight and fading, prolonging the service life of the vehicle's internal components.
Solar photovoltaic field of PVB film applications, further reflecting the high-tech value of this material. Photovoltaic-grade PVB film transmits beneficial rays from the sun while blocking harmful UV rays, optimising the light energy conversion efficiency of photovoltaic panels. In addition, its weather resistance and long-term stability ensure that solar panels work stably for long periods of time in harsh outdoor environments, making it an important contributor to the development of green energy.
With the rising awareness of environmental protection and the implementation of sustainable development strategies, the global demand for renewable energy is growing, and the solar photovoltaic market is booming. This has directly led to an increase in demand for high-quality, high-transparency PVB adhesive films with special features. Manufacturers continue to develop and innovate with coloured PVB films and higher transmittance products, which not only meet the need for efficient use of light energy in photovoltaic panels, but also offer more possibilities for architectural aesthetics and individual design.
The seven-decade-long history of PVB adhesive films in architectural curtain wall applications has proved their reliability and mature technology level. Today, with the continuous improvement of industry standards and laws and regulations, PVB adhesive films have become an indispensable part of safety and protection in the building and automotive industries. In the future, with the continuous progress of technology and the diversification of market demand, the application scope of PVB film will be further expanded, and play a greater role in promoting the sustainable development of society and the quality of people's lives.
EVA (ethylene vinyl acetate copolymer), as a multifunctional polymer material, occupies an important position in many industrial fields due to its excellent physical and chemical properties. Its unique molecular structure gives EVA material superior water and corrosion resistance, which makes it able to remain stable and not easily eroded when facing humid environments or coming into contact with a variety of chemical substances, thus making it shine in the manufacture of packaging films and functional shed films, effectively protecting the contents from the external environment.
In the field of shoe materials, especially in the manufacture of shoe soles, EVA is favoured because of its lightweight, soft, wear-resistant and good elastic recovery. The use of this material not only reduces the weight of shoes and improves wearing comfort, but also effectively absorbs the impact of walking or sports to protect the feet from injury. In addition, EVA material is easy to process and shape, can be injection moulding, blow moulding and other means of technology, to achieve complex design needs, to meet the market on the diverse aesthetic pursuit of footwear.
The application of EVA in laminated glass manufacturing also demonstrates its unique advantages. Compared with the traditional PVB film, EVA as a laminated material costs less, the processing temperature requirements are lower, which not only reduces energy consumption, but also broadens its scope of application in glass processing. EVA laminated glass not only maintains good safety performance, that is, in the event of glass breakage can effectively prevent the debris from flying apart, but also because of the excellent fluidity of the EVA material, you can easily achieve the laminated silk, laminated flowers and other decorative processes, for architectural decoration, art creation and so on. It provides a rich creative space for architectural decoration and art creation. These glasses with patterns and designs are not only beautiful and generous, but can also be customised to meet the needs of personalised decoration.
It is worth mentioning that EVA material production equipment investment is relatively low, about 100,000 yuan to establish a complete set of production lines, which for small and medium-sized enterprises is a very attractive investment option, reducing the threshold for entry into the market, and promote the diversified development of the industry. In addition, the environmental protection of EVA materials is also an advantage that can not be ignored, and its recyclable characteristics in line with the current global advocacy of the concept of green production, helping to build a circular economy.
In summary, EVA, with its excellent comprehensive performance, affordable processing costs, wide applicability and good environmental protection, has shown great potential for application and market value in many industries, and is an indispensable member of modern materials science. With the continuous progress of technology and the development of innovative applications, the future development prospects of EVA materials are promising.
SGP (SentryGlas Plus) ionic interlayer, a state-of-the-art material carefully developed by DuPont, revolutionises the performance standards of laminated glass, especially in terms of safety, strength and durability. The key benefits of this high-performance interlayer can be detailed in the following areas:
1.Superior Mechanical Properties and High Strength: SGP exhibits mechanical properties far beyond those of traditional PVB interlayers while remaining lightweight and thin. At the same thickness, the load-bearing capacity of SGP laminated glass is twice that of PVB laminated glass, which means that it can withstand heavier loads without damage, making it ideal for high-rise buildings, large-span structures, and occasions with stringent requirements for extreme conditions such as wind pressure and earthquakes. In addition, the bending deflection of SGP laminated is only one-fourth of that of PVB under the same load and thickness conditions, which significantly improves the rigidity and stability of the glass structure.
2.Outstanding tear strength: In terms of safety, the tear resistance of SGP is extremely outstanding, as much as five times that of PVB. This means that even when subjected to severe external forces that cause the film to tear, SGP is still able to keep the glass fragments bonded and prevent them from splashing, ensuring the safety of personnel. This ability to maintain structural integrity even in a damaged state is an important reason why SGP is chosen for many safety-sensitive areas, such as public buildings and flyovers.
3.Excellent stability and weather resistance: SGP sandwich film also has significant advantages in moisture resistance and UV resistance. Its transparent and colourless, and in the long-term exposure to outdoor environments, such as sun and rain, is not easy to yellowing phenomenon, yellowing coefficient is much lower than PVB, generally no more than 1.5, while the PVB yellowing coefficient is between 6 and 12. This low yellowing characteristic ensures the transparency and aesthetics of SGP laminated glass in the long term, making it an ideal choice for creating high-grade architectural appearances and interior lighting designs, especially for ultra-white laminated glass applications that seek the ultimate in visual effect and durability.
In summary, SGP, as a high-performance laminated material, not only offers significant improvements in mechanical strength, safety and stability, but also its excellent weatherability ensures long-term transparency and aesthetics, making it the material of choice for high-end architectural projects, specialised vehicles, security screens and more. Although the cost may be higher compared to PVB, the improved overall performance and reduced long-term maintenance costs make SGP the obvious choice for many high-quality applications.