Kingflex
Flexible closed cell elastomeric insulation has emerged as a cornerstone of energy conservation, condensation control, and process optimization in modern industrial and HVAC infrastructures. Composed primarily of Nitrile Butadiene Rubber (NBR) combined with Polyvinyl Chloride (PVC) and secondary foaming additives, this material features a highly dense, micro-cellular matrix that locks in air pockets. This closed-cell structure operates as a built-in vapor barrier, preventing moisture migration and significantly reducing thermal degradation risks associated with Corrosion Under Insulation (CUI).
Driven by strict global decarbonization standards, energy conservation policies, and ASHRAE guidelines, the demand for high-end closed cell elastomeric insulation has surged. In commercial structures, the material plays an essential role in stabilizing centralized cooling lines and chilled water systems. In industrial plants, petrochemical refineries, solar installations, and aerospace units, the material ensures process control under extreme conditions. The global insulation market relies on reliable manufacturers capable of combining advanced chemistry with massive manufacturing scalability to support international infrastructure growth.
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal insulation products. Kingflex research development and production department is located in the well-known capital of green-building materials in Dacheng, China. It is an energy-saving, environmentally friendly enterprise concentrating on research and development, production, and sales. In operation, Kingflex takes energy saving and consumption reduction as its core concept.
We provide comprehensive solutions regarding insulation by means of expert consultation, research and development production, installation guidance, and dedicated post-sale service to lead the development of the global building materials industry.
Kingflex is established by the Jinwei Group, which possesses more than 40 years of industrial history. Kingway Group, established in 1979, was the first manufacturer of thermal insulation materials north of the Yangtze River. Decades of research have paved the way for advanced formulations in elastomer chemistry, ensuring our products withstand tough environments.
Our employees are amazing in their own right, but together they are what makes Kingflex a rewarding and collaborative place to work. The Kingflex team is a tight-knit, talented group with a shared vision of giving consistently first-class service to our clients. Currently, Kingflex has 8 professional engineers in our R&D Department, 6 professional international sales specialists, and over 230 skilled workers in the production department.
Kingflex operates 5 large automatic continuous foaming lines, delivering an annual capacity exceeding 600,000 cubic meters. We are a designated production enterprise certified by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry.
Our thermal insulation systems are widely utilized across building construction, petroleum, chemical, national defense, marine, and aerospace industries. We have successfully exported our products to over 66 countries and regions worldwide over the last 16 years.
We supply international clients with comprehensive energy-saving thermal insulation solutions. Our responsibility is to be the premier integrated system provider of thermal insulation, cryogenic insulation, and acoustic attenuation for architectural and industrial sectors.
Innovation is key to Kingflex's market leadership. Our technical team continuously refines NBR/PVC polymer formulations to improve physical and mechanical characteristics. Our R&D testing ensures cell uniformity, consistent low thermal conductivity, and elevated resistance to moisture diffusion. These testing capabilities enable custom formulations, including halogen-free rolls for marine systems and high-density acoustic configurations for heavy industrial installations.
Our products pass global compliance checks. Kingflex materials are certified to international standards including BS 476, CE, REACH, RoHS, UL94, and ASTM, ensuring compliance for building systems and industrial piping networks.
Our raw material compounding and precision foaming lines utilize automated monitoring systems. Vulcanization parameters are continuously tracked to achieve the target cell structure and physical density. This manufacturing control supports high insulation performance under demanding operational conditions.
Ideal for large diameter ducting, vessels, and complex shape enclosures. Provides continuous coverage without gaps.
| Standard Parameter | Specifications |
|---|---|
| Material Chemistry | NBR/PVC elastomer base with closed-cell micro-bubble matrix |
| Thickness Range | 6mm to 50mm |
| Density Rating | 40 - 55 kg/m³ |
| Service Temperature Range | -40℃ to 105℃ |
Engineered for pipe systems in building HVAC and chemical networks. Prevents condensation and surface freezing.
| Standard Parameter | Specifications |
|---|---|
| Material Chemistry | NBR/PVC matrix with enhanced slip-agent liner layer |
| Thickness Range | 9mm to 40mm |
| Inner Diameter (ID) | 6mm to 114mm |
| Density Rating | 40 - 55 kg/m³ |
| Service Temperature Range | -40℃ to 105℃ |
Our commitment to quality is validated by project managers and distributors worldwide. Here are screenshots of technical discussions and confirmations from our client portal.
Modern elastomeric foaming relies on continuous extrusion and microwave vulcanization. Compounded NBR/PVC polymers are mixed with precise blowing agents before extrusion. In the vulcanization tunnel, heat triggers the blowing agents to release nitrogen gas. This process creates a uniform cell matrix that limits heat transfer through convection and radiation.
Our production monitoring maintains cell structure consistency. Uniform cell distribution prevents structural breakdown under compression, keeping the thermal conductivity ($\lambda$) low. The closed-cell skin also provides moisture resistance, preventing performance drops in high-humidity environments.
Kingflex's continuous quality control system tracks each batch from raw material processing through extrusion, foaming, cutting, and packaging. Automated sensors monitor density, dimension tolerance, and surface consistency, ensuring reliable performance in demanding industrial projects.
The flexible closed cell insulation industry is adapting to new environmental and fire safety requirements. Modern installations prioritize low-toxicity components. Halogen-free formulations are becoming standard in high-safety projects like commercial shipping and underground rail. These materials minimize toxic gas emissions during fire events.
Key industry developments include:
Kingflex continues to invest in advanced production technology to deliver compliant thermal insulation solutions for international industrial projects.
NBR/PVC Sheet Roll
Elastomeric Foam Tube
Elastic Foam Pipe
Corrosion Resistant Tube
NBR/PVC Tubing
Black Insulation Pipe
Foam Rubber Tube
HVAC Insulation Tube
Kingflex Insulation Co., Ltd. provides thermal and cryogenic insulation solutions for global industrial requirements. Contact our technical team for custom densities, specific fire ratings, or detailed wholesale pricing.
