Kingflex
Explore our premium selection of flexible, elastomeric open-cell and closed-cell acoustic barrier products directly from our state-of-the-art manufacturing plant.
How modern NBR/PVC closed-cell and open-cell structures actively dissipate sound energy and eliminate architectural vibration paths.
Acoustic insulation relies on two distinct mechanisms: sound barrier blocking (preventing noise transmission) and sound absorption (dissipating echoes inside a space). Standard solid structures suffer from resonance frequencies that allow sound waves to pass freely. Viscoelastic materials, such as Kingflex NBR/PVC elastomeric foam, act as highly effective mechanical dampening layers.
When sound waves strike the elastomeric membrane, the kinetic energy of the vibrating air molecules is transferred into the polymer matrix. The viscoelastic properties of nitrile-butadiene rubber turn this mechanical energy into microscopic thermal energy, effectively deadening sound waves across a wide band of frequencies, especially low-to-medium frequencies (100 Hz to 2000 Hz) typical of HVAC fans, motors, and compressor units.
To optimize acoustics, specifying the correct cell geometry is crucial:
SEO Growth Director's Note: When evaluating Sound Transmission Class (STC) ratings or Decibel Reduction (dB), combining an elastomeric rubber foam layer (e.g., Kingflex 25mm thickness) with high-density mass loaded vinyl (MLV) creates a decoupled mass barrier. This composite system can easily boost the STC of standard gypsum partitions or industrial ducts by over 15 to 22 dB.
Unrivaled raw material integration, high-output production scaling, and vertical supply efficiencies of China's green-building material capital.
Kingflex Insulation Co., Ltd. operates five high-capacity automatic assembly lines. Our processes run on real-time computer monitoring systems, guaranteeing precise control over the raw material ratio, foaming agent reaction temperature, and extrusion speed. This level of automation prevents structural unevenness, ensuring that every batch of NBR/PVC rubber foam possesses identical density, flexibility, and insulation coefficients from the first meter to the last.
Located in Dacheng, China, the designated capital of green-building materials, we utilize localized supply chains for raw elastomers and foaming additives. This geographic clustering drastically reduces the transport costs of raw ingredients, enabling us to offer an extremely competitive wholesale pricelist without compromising compliance standards.
A professional manufacturing and trading combo, focusing on innovative energy-saving and environmental soundproofing materials.
Kingflex is established by the Jinwei Group (also known as Kingway Group), which has more than 40 years of rich history. Founded in 1979, the group was the very first thermal and acoustic insulation materials manufacturer established north of the Yangtze River. Decades of specialized focus have made us a primary supplier designated by the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry of China.
In our daily operations, Kingflex holds "energy saving and consumption reduction" as our core concept. We deliver complete, turnkey structural insulation solutions, handling everything from project consultation, custom research and development, industrial production, technical installation guidance, and reliable post-sale support.
Our team is composed of dedicated industry experts who drive technical innovation. The Kingflex workforce includes 8 professional engineers in our R&D Department, 6 international sales consultants, and 230 skilled production technicians on the floor. Our collaborative culture enables us to continually design and bring to market premium-grade flexible insulation materials tailored to extreme cryogenic operations or specialized acoustic absorption barriers.
Precise mechanical specs and sizing matrices for Black Rubber Foam Sheets, Insulated Piping, and Cryogenic Elastomer Systems.
| Insulation Type | Standard Dimensions | Material Core | Density Range | Temperature Limits | Flame Retardancy Standard |
|---|---|---|---|---|---|
| Black Rubber Foam Sheet Roll | Thickness: 6mm - 50mm | NBR/PVC blend | 40 - 55 kg/m³ | -40℃ to 105℃ | BS 476, CE, REACH, ROHS, UL94 |
| Rubber Foam Insulation Pipe | Thickness: 9mm - 40mm / ID: 6mm - 114mm | NBR/PVC polymer | 40 - 55 kg/m³ | -40℃ to 105℃ | ASTM, UL94 Class V-0 |
| Cryogenic Insulation System | Customized multilayer wraps | Synthetic cryogenic rubber | 50 - 65 kg/m³ | -200℃ to 125℃ | UL94, ASTM E84, BS 476 Part 6/7 |
| Rock Wool Insulation Board | Custom panel dimensions | Basalt mineral fiber | 60 - 150 kg/m³ | Up to 650℃ | Non-combustible Class A1 |
How Kingflex systems solve thermal, acoustic, and anti-condensation problems in heavy industries and modern architectural projects.
Condensation buildup in ventilation ducts causes ceiling damage and mold. Kingflex elastomeric foam sheets wrapped around main chilled air ducts isolate warm ambient air from cold metal surfaces, controlling humidity while dampening low-frequency blower noise.
Petrochemical refining demands insulation that withstands both extreme operational heat and outdoor elements. Our dual-layer Rock Wool blankets wrapped with weather-proof coatings protect steam conduits up to 650°C, lowering thermal loss and protecting onsite personnel.
Hospitals, commercial high-rises, and industrial parks generate high mechanical noise from pumps and chillers. Lining generator housing and equipment rooms with open-cell Kingflex acoustic panels creates an effective sound barrier, absorbing vibrations before they can transmit through walls.
Our thermal and acoustic solutions are tested and trusted in high-demand operations globally. Over the last 16 years, we have exported to 66 countries, supplying systems for commercial complexes, national defense installations, and aerospace testing sites.
Our production facilities maintain complete traceability for every batch of NBR/PVC elastomer. This tracking provides global procurement managers with clear records of material compliance, environmental safety, and thermal ratings.
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Our materials undergo testing and certification by international verification bodies to ensure compliance and fire safety.
Building codes vary significantly across regions. To support global procurement, Kingflex has built a comprehensive testing and certification library. Our acoustic barrier and thermal insulation products are fully certified under BS 476, CE, REACH, RoHS, UL94, and ASTM. This guarantees that our materials can be designed into projects within Europe, North America, Southeast Asia, and the Middle East.
These certificates document low flame spread indexes, zero toxic smoke propagation, and chemical compliance. Additionally, we verify that our NBR/PVC formulations do not contain CFCs, HFCs, or volatile organic compounds (VOCs) that damage indoor air quality.
Our international sales team communicates with clients worldwide to coordinate custom designs, logistics, and material shipments.
Our sales team works to maximize container space, lowering freight costs for ocean transport. Through smart packing, we compress elastomeric sheets and nest smaller pipes inside larger ones, maximizing container volume and reducing the cost-per-cube for our clients. We offer complete tracking and clear documentation from the Dacheng plant floor directly to your destination port.
Get answers to technical questions about chemical formulations, acoustic specifications, fire compliance, and ordering details.
Elastomeric rubber foam insulation is mainly used for HVAC air ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation, and sound insulation. Its high flexibility, low thermal conductivity, and built-in vapor barrier make it a versatile material for preventing condensation and dampening industrial pipe vibration.
Yes, Kingflex rubber foam insulation products are fire retardant. They are designed to meet building safety standards, including BS 476 (Class 0 and Class 1), UL94 (Class V-0/V-1), and ASTM E84, ensuring safety in commercial and industrial settings.
Rubber foam is flexible, has a closed-cell structure, and resists moisture, making it ideal for HVAC, cold piping, and vibration dampening. Rock wool is a high-density basalt fiber insulation that is non-combustible and withstands temperatures up to 650°C, making it suitable for high-temperature industrial steam pipes and fire walls.
Yes, Kingflex provides comprehensive OEM and ODM support. We customize insulation thickness (from 6mm to 50mm), pipe inner diameters (from 6mm to 114mm), density levels, and add specialized outer barriers like aluminum foil, self-adhesive backings, or reinforced glass fiber cloth jackets.
Our products have passed BS 476, CE, REACH, RoHS, UL94, and ASTM certifications. This verification ensures our acoustic and thermal insulation products meet international standards for safe installation worldwide.
Yes, Kingflex maintains product traceability. Every batch is marked with production codes, allowing us to trace manufacturing parameters, raw material batches, quality control checks, and shipping logs back to our Dacheng facility.
We manufacture flexible elastomeric foam sheet rolls in thicknesses ranging from 6mm up to 50mm. Standard production options include 6mm, 9mm, 13mm, 15mm, 19mm, 25mm, 32mm, 40mm, and 50mm thicknesses to match various thermal and sound blocking requirements.
When installed and maintained correctly in recommended environments, our elastomeric rubber foam sheets and pipe insulation have a service life of 10 to 15 years, during which they maintain stable thermal conductivity and structure.
High-performance elastomeric rolls, tubes, rock wool, and cryogenic protection systems engineered for modern building designs.
