Engineered for extreme structural efficiency, structural safety, and high-performance sound dampening.
Advanced roll blanket designed for industrial roofing insulation and modular facility envelopes in Japan.
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High-density glass fiber insulation board ideal for interior partition sound absorption and exterior curtain wall applications.
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Engineered elastomeric foam optimized for petrochemical low-temp pipelines and LNG terminal insulation in Japan.
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Advanced thermal barrier technology preventing condensation and energy loss in sub-zero process systems.
View SpecificationsThe insulation material landscape in Japan is undergoing a monumental paradigm shift. Propelled by the Ministry of Economy, Trade and Industry (METI) and Japan's commit to achieving Net-Zero Carbon Emissions by 2050, building envelopes and industrial infrastructures are subject to unprecedented energy efficiency metrics. In this context, Glass Wool Insulation Products serve as critical components for high-performance buildings and complex thermal processes across major metropolitan hubs like Tokyo, Osaka, and Yokohama.
Unlike less regulated markets, Japanese commercial and residential constructions demand materials conforming strictly to JIS A 9504 (mineral wool insulation materials) and possessing non-combustible material certifications certified by the Ministry of Land, Infrastructure, Transport and Tourism (MLIT). Furthermore, environmental requirements demand zero formaldehyde emission levels, commonly categorized under the F★★★★ (F-Four Star) safety grading system. Glass wool manufactured with eco-friendly binders represents a crucial solution, providing outstanding fire protection, chemical inertness, and structural longevity.
Japan’s unique environmental footprint requires building systems to feature exceptional seismic resilience. Due to structural movements during micro-earthquakes, rigid insulation systems are prone to fracturing and cracking over time. High-tensile, flexible glass wool blankets and boards provide excellent mechanical resilience. They adapt seamlessly to structural deflections without losing their thermal performance. Additionally, they prevent thermal bridging, which is vital for keeping indoor climates stable and reducing HVAC energy usage in cold regions like Hokkaido and Tohoku.
Premium closed-cell configurations mitigating moisture intrusion and ensuring optimal thermal retention.
Versatile NBR/PVC elastomeric thermal sheet plates serving equipment and duct insulation.
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Durable foam rubber pipe insulation preventing thermal transfer on chilled water systems in Yokohama.
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10mm open-cell acoustic insulation sheet optimized for engine rooms and office HVAC muffling.
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Professional NBR elastomeric rubber foam tubing for HVAC systems, refrigeration, and split units.
Request QuotationTranslating decades of energy-saving research into compliant infrastructure solutions.
Our solutions conform to prestigious safety frameworks including BS 476, CE, REACH, RoHS, UL94, and ASTM. This ensures streamlined compliance processes for Japanese architectural inspections.
Managed by 8 professional engineers, our research facility continuously enhances the structural thermal resistance and moisture protection factors of our closed-cell matrices.
Operating 5 large-scale automated lines with an annual capacity of over 600,000 cubic meters. A designated supplier for the Ministry of Energy and Chemical Industries.
| Material Class | Service Temp. Range | Closed Cell Rate | Fire Classification | Applicable Industries (Japan) |
|---|---|---|---|---|
| Glass Wool Insulation | -120℃ to 400℃ | Open Fibrous Matrix | Non-combustible (Class A) | Commercial Envelopes, Drywall Systems, High-temp Ducts |
| NBR Elastomeric Foam | -40℃ to 105℃ | >98% | Flame Retardant (Class 1 / Class V-0) | HVAC Chilled Pipes, VRF Systems, Equipment Enclosures |
| Cryogenic Rubber Foam | -200℃ to 125℃ | >99% | Self-extinguishing (UL94) | LNG Terminals, Ethylene Plants, Cold Chain Processing |
An energy-saving, environmentally friendly enterprise focusing on the R&D, manufacture, and sales of high-performance thermal insulation solutions.
Established by the Jinwei/Kingway Group, which holds a historic 40-year lineage since 1979, Kingflex has served as the first manufacturer of thermal insulation materials north of the Yangtze River. We take energy conservation and consumption reduction as our core operational concept, facilitating project realization through consulting, manufacture, installation guidance, and dedicated post-sale support.
Our dedicated international sales and support team partners with leading engineering houses across Japan to support large commercial, cryogenic, and HVAC projects. We manage rigorous quality tracking protocols to guarantee that every consignment is traceable from raw chemical components to final delivery.
Explore our project installations and international certificate pipeline representing performance excellence.
Material: NBR/PVC
Thickness: 6mm - 50mm
Density: 40 - 55 kg/m³
Service Temp: -40℃ to 105℃
1. Even cell distribution (Closed cell rate >98%)
2. High moisture resistance factor
3. Excellent resilience >80%
4. Non-propagation of flame
• Commercial HVAC Air Ducts
• Wall & Basement Thermal Envelopes
• Solar Hot Water Piping Systems
• Maritime Cargo Storage Tanks








Technical specifications and commercial details concerning thermal insulation systems in Japan.
Explore our technical catalog of high-performance closed-cell tubes, thermal sheets, and cryogenic isolation materials.
Thick 40mm elastomeric sheet targeting low-temperature ductwork and soundproof boundaries.
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Dolefin system designed to withstand extreme sub-zero environments in LNG terminals.
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Specialized multi-layer cryogenic barrier system ensuring structural pipeline integrity.
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High-grade KINGFLEX rubber foam pipe sleeves protecting split AC pipes in Tokyo.
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Standard 19mm thick NBR sheet roll designed for commercial duct lagging projects.
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High-grade roll sheeting providing fast and seamless installation on industrial storage vessels.
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Medium 13mm thickness thermal sheet optimal for residential air supply system insulation.
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Industrial-grade system thermal barriers preventing heat ingress on ultra-cold petrochemical pipelines.
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