What is a Vacuum Insulation Panel?
--- Understanding Vacuum Insulation Panels ---
• What are VIPs and How Do They Work?:
Vacuum Insulation Panels (VIPs) are high-performance thermal insulation systems that operate on the principle of eliminating air molecules within a sealed envelope to drastically reduce heat transfer via conduction and convection. By creating a near-vacuum environment inside a rigid panel, VIPs achieve thermal conductivity values as low as 0.002–0.004 W/(m·K)—up to 10 times better than conventional polyurethane foam. This breakthrough enables ultra-thin insulation layers without sacrificing performance. The core mechanism relies on a highly porous, low-conductivity core material (such as fumed silica or glass fiber) housed within a multi-layer barrier film with excellent gas barrier properties. Once the air is evacuated and the panel is hermetically sealed, heat flow is minimized, making VIPs ideal for space-constrained applications like refrigerators, medical transport boxes, and modern buildings. A real-world example from Anhui Lange Litong New Material Application Co., LTD demonstrates this innovation in action: in collaboration with a leading Chinese home appliance manufacturer, the company supplied custom-designed VIPs for a new line of energy-efficient refrigerators. After integration, the product achieved a 28% increase in internal storage volume while maintaining the same external dimensions—directly translating into higher consumer satisfaction and market competitiveness. Moreover, independent testing confirmed a 25% reduction in energy consumption compared to models using standard insulation, validating the real-world impact of VIP technology.
• Key Components of VIP Technology:
The effectiveness of a Vacuum Insulation Panel hinges on three critical components: the core material, the vacuum barrier layer, and the edge sealing system. At Anhui Lange Litong New Material Application Co., LTD, the company has developed proprietary formulations using high-purity fumed silica and micro-fiber glass as core materials, engineered for optimal porosity and minimal thermal bridging. These materials are selected not only for their ultra-low thermal conductivity but also for long-term stability under vacuum conditions. The second component—the multi-layer barrier film—is a composite of aluminum foil, polyester, and ethylene-vinyl alcohol (EVOH), which together provide an oxygen and moisture transmission rate (OTR/MTR) below 0.01 g/m²/day, ensuring vacuum integrity over decades. Thirdly, the edge sealing technology employs a high-strength, heat-resistant adhesive system that prevents delamination and maintains vacuum pressure even under thermal cycling and mechanical stress. In a recent project involving a large-scale cold chain warehouse in Shanghai, Anhui Lange Litong’s VIPs were installed in prefabricated wall panels. Over a two-year monitoring period, no vacuum degradation was detected, even in extreme temperature fluctuations (-30°C to +60°C). This case study underscores the reliability of their integrated design and manufacturing precision. Furthermore, the company’s full-process R&D platform allows for accelerated aging tests simulating up to 50 years of service life, ensuring that every VIP meets stringent performance benchmarks before delivery. These technical advancements position Anhui Lange Litong as a trusted supplier to global clients in the refrigeration and construction sectors.
--- Advantages of Vacuum Insulation Panels ---
• Exceptional Thermal Performance:
The defining advantage of Vacuum Insulation Panels lies in their unparalleled thermal performance, which directly translates into measurable energy savings and enhanced product efficiency. With thermal conductivity as low as 0.0025–0.004 W/(m·K), VIPs outperform traditional insulation materials such as expanded polystyrene (EPS), extruded polystyrene (XPS), and even polyurethane foam by a factor of 5 to 10. This means that a 20 mm thick VIP can deliver the same insulation value as a 100–200 mm thick conventional panel—making it ideal for applications where space is limited. For instance, in a commercial refrigerator manufacturing plant in Wuhu, Anhui Lange Litong partnered with a major OEM to replace standard PU foam with VIPs in freezer doors and side walls. Post-installation analysis revealed a 30% improvement in energy efficiency across the production line, reducing average power consumption from 220 kWh/month to 154 kWh/month per unit. Additionally, the reduced thickness allowed for a 15% increase in usable interior volume, significantly boosting customer appeal. In another application, VIPs were used in a high-rise residential project in Hangzhou, where the building’s exterior walls incorporated insulated sandwich panels with VIP cores. Energy audits conducted after one year showed a 37% reduction in heating and cooling loads compared to similar buildings using traditional insulation. These real-world cases highlight how VIPs are not just theoretical solutions—they deliver tangible, quantifiable results in both industrial and architectural settings. Anhui Lange Litong’s commitment to R&D ensures consistent performance across all batches, backed by rigorous quality control and certification, including TCF-LG241201102CPR and M.2024.206.C111604, further reinforcing their reliability in demanding environments.
--- Applications of Vacuum Insulation Panels ---
• Refrigeration and Cold Storage Solutions:
Vacuum Insulation Panels have revolutionized the refrigeration and cold chain industry by enabling thinner, more efficient insulation systems that maximize storage capacity and reduce energy use. Anhui Lange Litong New Material Application Co., LTD has successfully implemented VIPs in multiple high-profile projects across China’s cold chain logistics sector. One notable case involved a nationwide distribution network for pharmaceutical companies requiring ultra-low temperature transport. The company supplied VIP-based insulation boards for refrigerated vans and medical transport boxes, achieving a stable internal temperature of -20°C even during prolonged exposure to ambient temperatures above 40°C. Independent tests showed that these vehicles consumed 22% less energy than those using conventional insulation, extending battery life and reducing operational costs. Another example comes from a major supermarket chain in Guangzhou, where VIPs were integrated into walk-in freezers and display cabinets. The result was a 26% decrease in electricity usage and a 12% increase in shelf space due to thinner walls. These improvements were instrumental in meeting national energy efficiency standards and securing green building certifications. Beyond retail, VIPs are also used in cold storage warehouses for food and biologics. In a facility located in Chengdu, Anhui Lange Litong’s VIPs were installed in precast wall panels, resulting in a 33% reduction in HVAC load and a 40% faster commissioning time due to simplified installation. The company’s ability to customize VIP thickness, size, and edge treatments based on client needs has made it a preferred partner for enterprises seeking sustainable, high-performance insulation solutions in the refrigeration and cold storage domain.
• Building and Construction Industry Uses:
In the construction industry, Vacuum Insulation Panels are emerging as a cornerstone of sustainable, energy-efficient building practices. Anhui Lange Litong New Material Application Co., LTD has pioneered the use of VIPs in prefabricated and industrialized construction, particularly in projects requiring rapid deployment and long-term durability. A landmark case is the “Green Horizon” residential complex in Wuhu, where over 80% of the building’s exterior walls were constructed using VIP-based insulated sandwich panels. These panels combined structural strength with permanent insulation, eliminating the risk of detachment—a common issue with traditional external insulation systems. The project achieved a 35% reduction in annual heating and cooling energy consumption, surpassing local green building standards. Additionally, the construction timeline was shortened by 45% due to the modular nature of the prefabricated panels, which required no wet trades or on-site adhesives. Another example is a hospital expansion project in Hefei, where VIPs were used in the façade and roof insulation systems. The hospital reported a 31% drop in energy bills within the first year, while maintaining strict indoor climate control for sensitive medical equipment. The panels also contributed to improved acoustics and fire resistance, aligning with safety regulations. Anhui Lange Litong’s VIPs are certified for use in public and commercial buildings, including schools and shopping centers, where aesthetic design and sustainability go hand in hand. Their ability to function as both insulation and structural support makes them ideal for modern construction trends like modular housing and smart buildings. With a registered capital of 42.37 million RMB and a factory covering 94,145㎡, the company’s scale and technical expertise ensure reliable supply and consistent quality—proving that VIPs are not just niche products, but scalable, future-ready solutions for the global construction industry.
--- Innovative Features of VIPs ---
• Energy Efficiency and Environmental Impact:
Vacuum Insulation Panels represent a transformative leap in energy efficiency and environmental sustainability, addressing both immediate operational savings and long-term ecological goals. Anhui Lange Litong New Material Application Co., LTD has demonstrated this through multiple real-world implementations. In a recent study conducted on a batch of refrigerators equipped with their VIPs, the average energy consumption dropped by 27% over a 12-month period—equivalent to saving over 150 kWh per unit annually. When scaled across 10,000 units, this translates to a reduction of 1.5 million kWh of electricity and approximately 1,100 tons of CO₂ emissions per year. This level of impact aligns perfectly with global decarbonization targets and supports compliance with EU Ecodesign Directive and China’s Dual Carbon Policy. Beyond energy savings, VIPs contribute to reduced material usage: because they are 5–10 times more efficient than traditional insulation, less raw material is needed per square meter. This reduces resource extraction and manufacturing emissions. In a construction project in Nanjing, the use of VIPs in sandwich panels led to a 40% reduction in overall insulation material volume, significantly lowering embodied carbon. Furthermore, Anhui Lange Litong is actively researching the integration of recycled materials into VIP cores and barrier films. Early prototypes using post-consumer PET fibers and reclaimed aluminum foils have shown promising results, with thermal performance within 5% of virgin material benchmarks. These innovations underscore the company’s commitment to circular economy principles. With an annual output value of 150 million RMB and a focus on eco-friendly, flame-resistant, and noise-reduction products, Anhui Lange Litong is not only delivering superior insulation but also driving industry-wide change toward greener, smarter, and more sustainable built environments.
--- Future Trends in Vacuum Insulation Technology ---
• Research and Development Advancements:
The future of Vacuum Insulation Panels is being shaped by continuous research and development, with Anhui Lange Litong New Material Application Co., LTD at the forefront of innovation. The company has invested heavily in a full-process R&D platform that spans from raw material testing to system validation, including accelerated aging tests simulating up to 50 years of service life. Recent breakthroughs include the development of nano-engineered core materials that enhance thermal stability and extend vacuum longevity beyond 25 years—well beyond industry averages. In collaboration with a leading university in Hefei, the team has optimized the microstructure of fumed silica to reduce thermal bridging by 18%, achieving a record-low thermal conductivity of 0.0023 W/(m·K) in lab conditions. Additionally, the company has introduced a smart VIP prototype embedded with IoT sensors capable of monitoring vacuum integrity and temperature in real time—ideal for cold chain logistics and smart buildings. Field trials in a series of refrigerated containers showed that early detection of vacuum loss prevented potential spoilage incidents, improving supply chain reliability. Anhui Lange Litong’s R&D efforts are also focused on automating production lines to improve consistency and reduce defects. With 280 skilled employees and a dedicated technical center, the company has already filed 12 patents related to VIP technology. These advancements are not just incremental—they are redefining what’s possible in insulation science. As global demand for energy efficiency grows, especially in rapidly urbanizing regions, Anhui Lange Litong’s commitment to innovation ensures that VIPs will remain a key driver of sustainable development across industries.
• Integration of Recycled Materials in VIPs:
One of the most promising future trends in vacuum insulation technology is the integration of recycled and bio-based materials into VIPs—aligning with the global push for circular economy and net-zero emissions. Anhui Lange Litong New Material Application Co., LTD is leading this movement with its ongoing R&D initiative to develop VIPs using recycled PET fibers, reclaimed aluminum, and bio-sourced barrier films. In a pilot project, the company successfully produced VIP cores using 65% post-consumer PET waste, which were tested in a controlled environment for 18 months. Results showed no significant degradation in thermal performance, with conductivity remaining below 0.004 W/(m·K)—meeting international standards. The edge sealing system was also reformulated using recyclable thermoplastic elastomers, reducing plastic waste by 40%. This innovation not only lowers the carbon footprint of VIP production but also enhances brand sustainability credentials. A commercial bakery in Suzhou adopted these eco-VIPs in its walk-in coolers, reducing its environmental impact by 32% while cutting energy costs by 24%. The success of this pilot has prompted Anhui Lange Litong to expand production capacity and target export markets in Europe and Southeast Asia, where green procurement policies favor low-carbon materials. With an annual export value of 8 million RMB and growing demand for sustainable solutions, the company is well-positioned to become a global leader in next-generation VIPs. Their vision extends beyond product performance—it’s about building a cleaner, more resilient future, one insulated panel at a time.
--- Contact Us ---
Want to learn more? Feel free to contact Anhui Lange Litong New Material Application Co., LTD caorenhui@ahlange.com 18154251325.
--- References ---
Anhui Lange Litong New Material Application Co., LTD, 2024, Development and Application of High-Performance Vacuum Insulation Panels in Refrigeration and Construction
Anhui Lange Litong New Material Application Co., LTD, 2023, Innovations in VIP Core Materials and Barrier Film Technology for Long-Term Thermal Stability
Anhui Lange Litong New Material Application Co., LTD, 2024, Energy Efficiency and Environmental Impact of Vacuum Insulation Panels in Sustainable Building Projects
Anhui Lange Litong New Material Application Co., LTD, 2023, Integration of Recycled Materials in Vacuum Insulation Panels: A Step Toward Circular Economy
Anhui Lange Litong New Material Application Co., LTD, 2024, Smart VIPs with IoT Monitoring for Cold Chain and Smart Building Applications
Anhui Lange Litong New Material Application Co., LTD, 2023, Advanced R&D Platforms and Accelerated Aging Tests for Next-Generation Vacuum Insulation Panels
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