High Quality Thermoplastic Polyurethane Films

Leader's Speech
On April 1, 2024, the national standard "General Technical Specifications for Aerospace Thermoplastic Polyurethane Elastomer Intermediate Film" (GB/T43128-2023) developed by Shengding(Foundite) High-tech Materials Co., Ltd. was officially implemented. This is also the only aviation national standard in China that is currently drafted and formulated by a private enterprise. At 10 a.m., the national standard promotion meeting was grandly held at Shengding(Foundite) High-tech Materials Co., Ltd., and the leaders of the municipal and district market supervision bureaus came to guide and deliver speeches.

Standard Promotion
The standard promotion session set up a prize-winning knowledge quiz, which was full of knowledge and fun. Zhang Zeliang, deputy general manager of Shengding(Foundite), led everyone to study the standard content together, and Shen Chuanhai, an engineer, led everyone to learn the business content related to the autoclave for curing and molding of aerospace composite materials. The on-site learning atmosphere was strong and the response was enthusiastic.

Chairman’s message
Chairman Wang Chao expressed his gratitude to all participating units of the national standard and leaders at all levels who care about the company’s national standard construction. He said: The release of the national standard will further promote the development of new quality productivity. Shengding(Foundite) will actively promote the implementation of the national standard, strictly implement the requirements of the national standard, continuously improve its own technical level and innovation ability, and contribute to promoting the green, low-carbon and high-quality development of the industry.

Glass lamination films have become a transformative solution in the architectural industry, enhancing both safety and aesthetic appeal. These films, which include Polyvinyl Butyral (PVB) and polyethylene terephthalate (PET) coatings, are applied between two or more layers of glass to improve shatter resistance, ensuring that any breakage is contained. By containing fragments from shattering, these films significantly reduce the risk of injuries and property damage. Additionally, glass lamination films offer advanced optical properties that can reduce glare and heat, which can significantly improve the energy efficiency of buildings. Dynamic and responsive facades can be achieved, adapting to various environmental conditions. Smart technologies, such as photochromic films that adjust their opacity based on light conditions, can further enhance functionality and sustainability. Moreover, these films contribute to energy efficiency by reducing solar heat gain and improving thermal performance, which helps lower HVAC costs and reduce environmental impacts. Their use in sustainable design principles also aligns with the need for natural light enhancement and recyclability.

Types of Glass Lamination FilmsGlass lamination films come in various types, each with its unique advantages:

Polyvinyl Butyral (PVB) Films: The primary component in most laminated glass, PVB films enhance safety and energy efficiency by improving impact resistance and UV protection. Their durability and versatility make them a widely used choice.Solar Control Films: Designed to minimize heat gain and glare by reflecting or absorbing solar radiation, solar control films are ideal for hot and sunny climates. They can significantly reduce cooling costs and improve overall building comfort.Insulating Films: With a focus on thermal resistance, insulating films enhance the insulation properties of glass, helping to maintain consistent indoor temperatures. They are particularly beneficial in colder climates where reducing heat loss is crucial.Smart Films: Incorporating advanced technologies, smart films can change color or tint based on environmental conditions, providing dynamic shading and aesthetic benefits. They enhance visual appeal and contribute to more sustainable design practices.Decorative Films: Available in a variety of patterns and colors, decorative films can be used to create unique and visually appealing finishes. They blend well with architectural aesthetics and branding elements, adding both functionality and style to glass surfaces.Benefits of Using Glass Lamination Films in ConstructionUsing glass lamination films in construction offers several benefits:

Enhanced Privacy: Films can transform the transparency of glass, providing practical privacy solutions without the need for heavy drapes or shades. This is particularly useful in offices, bathrooms, and residential areas.Superior Energy Efficiency: Films like PVB and Low-Carbontology significantly reduce heat transfer and UV radiation, leading to lower energy consumption and reduced HVAC usage. Cost savings over time can be substantial.Safety and Structural Integrity: PVB films provide excellent protection against glass shattering, preventing injuries and property damage from incidents like severe weather or impacts. This is especially important in high-traffic areas and regions prone to natural disasters.Aesthetic Flexibility: From frosted and mirrored finishes to vibrant colors and decorative patterns, glass lamination films offer a wide range of design options. This versatility allows architects and construction professionals to enhance the visual appeal of their projects.Durability and Versatility: Made from durable materials like polyester and PVB, glass lamination films are resistant to scratches, fading, and deformation. They can be installed and maintained easily, ensuring long-lasting and reliable aesthetic and functional benefits.Installation and Maintenance of Glass Lamination FilmsProper installation and maintenance are crucial for the optimal performance and longevity of glass lamination films:

Selection and Application: Carefully selecting films that meet specific needs, such as energy efficiency and aesthetic preferences, is essential. A professional installer should assess requirements and apply films with precision to avoid defects.Regular Maintenance: Periodic cleaning with mild detergents and soft cloths is necessary to prevent scratching. Monitoring for signs of wear, such as discoloration or peeling, is also vital to catch any damage early, ensuring continuous protection and aesthetic appeal.Sustainability and Environmental Impact of Glass Lamination FilmsGlass lamination films play a significant role in promoting environmental responsibility within the glass industry:

Enhanced Strength and Energy Efficiency: Films such as PVB, EVA, and TLV enhance the strength and energy efficiency of glass, contributing to structural integrity and sustainability.Environmental Considerations: To mitigate environmental impact, the industry should adopt renewable energy sources, use recycled materials, and improve recycling methods. Lifecycle assessments show that sustainable practices such as using recycled PVB and eco-friendly manufacturing significantly reduce the overall environmental footprint.Sustainable Building Designs: These films contribute to more environmentally friendly buildings by reducing energy consumption and improving insulation, especially in high-rise structures.Real-Life Experiences and Future ProspectsReal-life experiences underscore the importance of glass lamination films:
Enhanced Security: Using security films during a campus renovation prevented a break-in, highlighting their critical role in maintaining structural integrity and safety.Improved Energy Efficiency: UV-blocking films installed to mitigate heat gain and reduce fading led to noticeable improvements in energy efficiency and overall comfort.These practical applications demonstrate that the benefits of glass lamination films extend beyond initial installation, contributing to sustained performance and overall building sustainability.

When choosing a flexible polymer film for your product (whether for protective covers, textile applications, automotive interiors, or medical devices), you may face a common question: Should I choose a TPU film or a PU film?



At first glance, the two names seem similar. But they are actually quite different. The choice between thermoplastic polyurethane (TPU) film and traditional polyurethane (PU) film involves fundamental differences in manufacturing processes, performance, and long-term costs. If you are new to material selection, these differences are easy to overlook—but their importance may be greater than you think.



This article will analyze in detail the key differences that influence product decisions, focusing on which methods are effective in actual production and use.







How TPU and PU films are made—and why it matters.
The biggest difference between these materials lies not in the appearance of the finished product, but in their production methods.



**TPU film can be melt-processed.** You can heat it, shape it, cool it, and then heat it again without chemical decomposition. This means manufacturers can use processes such as extrusion, calendering, and thermoforming—methods that support high-volume production, tight thickness control, and secondary processing such as welding or embossing.



On the other hand, PU films are typically made using reaction casting or coating methods. The liquid prepolymer forms a cross-linked network after curing. Once cured, it cannot be remelted. This limits the processing options for the molded material, but also allows it to exhibit a soft texture and surface finish that TPU typically cannot match.



This is more than just a technical footnote. It impacts every aspect of downstream processes: how to create prototypes, how to scale up production, how to handle waste, and whether the film can be seamlessly integrated into your existing manufacturing processes.

For companies that work with contract manufacturers or implement lean operations, understanding these manufacturing differences early on can save significant time and costs during product development.

Performance characteristics that influence material selection
Besides the manufacturing process, TPU and PU films also differ in performance, which directly affects the product's performance.



• Temperature resistance: TPU films generally maintain their shape and mechanical properties over a wide temperature range, especially at low temperatures. PU films may harden or crack at low temperatures, depending on their formulation.



• Abrasion and tear resistance: TPU performs excellently in high-abrasion applications, such as protective films, footwear components, and inflatable structures. While PU films are flexible, they typically lack the same toughness under repeated stress.



• Breathability and Moisture Wicking:Some polyurethane formulations can achieve high water vapor transmission rate (MVTR) and extremely low air permeability—characteristics highly valued in technical textiles. Thermoplastic polyurethane (TPU) can also achieve this, but typically requires special grades.



• Surface finish and feel: PU films typically have a softer feel, closer to leather or textiles. This is crucial in areas such as apparel, automotive interiors, and consumer goods, as feel influences brand perception.



If your product will be exposed to outdoor environments, frequent use, or heat cycling, TPU is generally a safer choice. However, if aesthetics, drape, and softness are primary considerations—especially in the fashion or interior design sectors—PU may be more suitable.



When is TPU film suitable for your product?
When durability and processing flexibility cannot be ignored, TPU film is the ideal choice.



If you're developing products that need to withstand UV exposure, frequent use, or mechanical stress—such as phone screen protectors, outdoor gear, or automotive paint protection films—TPU's toughness becomes a key advantage. It better maintains its performance, is less prone to yellowing, and in many cases, can be recycled or reprocessed.



TPU is also a good choice when you need precise tolerances or plan to integrate films into automated production lines. Its melt-processing properties mean you can thermoform, RF weld, or laminate it with other thermoplastics without worrying about compatibility issues.



For e-commerce businesses sourcing protective films or functional components, partnering with a reliable TPU film supplier like Shengding ensures consistent material quality and customized specifications. Shengding offers a range of TPU films with varying hardness, thickness, and surface finishes to help you precisely match material properties to your product's specific needs, avoiding over-design or cost overruns.



When to choose PU film
When aesthetics, comfort, and specific functional characteristics are the primary considerations, PU films can stand out.



In the fashion, interior design, and soft furnishings industries, tactile experience is paramount. PU films can mimic the look and feel of natural leather or suede while remaining lightweight and affordable. They drape better, adhere more strongly to fabrics, and allow for fine printing or embossing.



Some PU films are specially designed to be both breathable and waterproof, making them popular in sportswear, medical textiles, and shoe linings.

However, it's important to note that PU film is more difficult to recycle, has poor resistance to extreme temperatures, and offers limited room for post-processing and modification. If your product requires rework, repair, or integration with thermoplastic components, PU film may become a bottleneck.



Cost considerations besides the price per kilogram
While directly comparing material costs is tempting, total cost of ownership provides a more comprehensive picture of the actual situation.



While TPU film has a higher initial material cost, its high processing efficiency, recyclability, and durability reduce waste, mold costs, and warranty claims. These advantages accumulate rapidly if you are scaling up production or planning to extend product lifespan.



Polyurethane films may have a lower unit area price, but limitations in processing and rework can increase labor costs or scrap rates. If your production involves frequent design iterations or complex assembly, these hidden costs may offset the initial savings.



For buyers new to the market, requesting sample rolls and conducting small-batch trial production before placing large orders is worthwhile. Shengding provides sample support and technical consultation to help e-commerce companies test material performance in real-world application environments before scaling up production.



Choose the right materials for your product
Choosing between TPU and PU film is not about selecting the "better" material, but about finding the material that best suits your specific product requirements, production setup, and market positioning.



Ask yourself:



• Will the product face high-intensity use, outdoor exposure, or extreme temperature environments?


• Do you require strict dimensional control, or do you plan to integrate the film into thermoplastic components?


• Are soft-touch materials or aesthetically pleasing surface finishes key selling points?


• How important is recyclability or sustainability to your brand positioning?



Your answer will guide you to find the most meaningful material—not only from a technical perspective, but also from a business perspective.



If you still have concerns, partnering with an experienced supplier can streamline the process. Shengding collaborates with global e-commerce brands to source, customize, and deliver TPU films that meet product goals and budget constraints, offering transparent, flexible, and reliable delivery times.



Frequently Asked Questions (FAQ)
1.Can TPU film and PU film be used interchangeably?

Generally not. Although they look similar, their processing techniques and performance characteristics are completely different. Randomly substituting them without testing may lead to problems in manufacturing or product durability.



2.Which material is more environmentally friendly?

TPU film is typically a thermoplastic material, making it easier to recycle. PU film is a thermosetting material, making it more difficult to reprocess. However, some PU formulations reduce VOC (volatile organic compound) emissions during the production process.



3.Are TPU films more expensive than PU films?

TPU films are generally more expensive per kilogram, but considering processing efficiency, reduced waste, and product lifespan, the total cost can be competitive or even lower, depending on your application.



4.Where can I source high-quality TPU film for e-commerce products?

Shengding specializes in manufacturing TPU film for the global market, offering a variety of customization options including thickness, surface treatment, and hardness. They support both small-batch orders and large-scale production, making them an ideal partner for e-commerce businesses at all stages of development. Visit tpufilmmanufacturers.com for more product information and to request samples.

Shengding High-Tech Materials’ EVA and TPU laminated films, thanks to their excellent physical and chemical properties, are widely used in various fields such as architectural decoration, new energy, security and protection, rail transit, and aviation.

EVA films offer advantages such as high light transmittance, resistance to yellowing, ease of processing, and outstanding cost-effectiveness. They are available in ultra-transparent, photovoltaic, and colored decorative series. In the construction sector, they are commonly used for interior partitions, landscape railings, doors and windows, and artistic laminated glass, allowing for customization of colors and textures to suit various decorative projects. In the new energy sector, they can be used for the lamination of smart dimmable glass, meeting the production needs of small and medium-sized glass processing enterprises.

Optical-grade TPU film is the company’s high-end core product. It offers excellent impact resistance, explosion-proof, and bulletproof properties, maintains good toughness even in low-temperature environments, and can be laminated with glass and PC sheets to effectively prevent shatter. These products are primarily used in high-speed rail windows, high-end curtain walls, and bank security glass, while also covering high-demand applications such as aircraft windows, ship observation portholes, and bulletproof glass for armored vehicles. They can withstand harsh operating conditions—including extreme temperature fluctuations and severe impacts—providing reliable safety assurance for specialized transparent components and supporting the localization of materials in critical sectors.

Shengding Advanced Materials Co., Ltd. is a high-tech enterprise specializing in the R&D and production of interlayer films for laminated glass. The company independently masters core film-forming technologies, and its products have passed numerous authoritative domestic and international certifications, enabling the localization of high-end interlayer film materials.

EVA films offer high light transmittance, resistance to yellowing, ease of processing, and excellent cost-effectiveness. They cover high-temperature ultra-transparent, low-temperature photovoltaic, and colored decorative series, with a processing temperature range of 90–130°C and a simple, stable hot-pressing process. They firmly bond glass fragments to prevent shattering and flying debris, and are widely used in architectural decorative glass, interior partitions, photovoltaic modules, and smart dimmable glass. The colored series supports customization to meet the needs of personalized projects such as landscape railings and art glass.

TPU optical films are the company’s high-end core products, featuring excellent impact resistance and bulletproof/explosion-proof properties. They maintain good toughness even in low-temperature environments and can be directly laminated to glass and PC sheets to effectively absorb impact energy and prevent shatter. They are suitable for highly demanding applications such as aircraft windows, high-speed rail windows, security bulletproof glass, and high-end curtain walls.

The company can customize specifications and parameters according to client project requirements and provides comprehensive technical support. EVA and TPU films complement each other, offering safe and reliable turnkey solutions for laminated glass interlayers in sectors such as construction, photovoltaics, rail transit, security, and aviation. Our products are exported to markets both domestically and internationally.


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