Kingflex
Kingflex Insulation Co., Ltd. represents the pinnacle of thermal and acoustic engineering in North China. Operating as a highly integrated manufacturing and trading combo, Kingflex has established its state-of-the-art research, development, and high-capacity manufacturing complexes in Dacheng, China—renowned globally as the capital of green-building materials. As an energy-saving and environmental-friendly pioneer, Kingflex concentrates heavily on the full lifecycle of thermal and acoustic insulating components, spanning initial academic R&D, advanced material synthesis, automated production, application training, installation guidance, and global post-sale technical support.
Our developmental lineage traces back to our establishment by the esteemed Jinwei Group (originally founded in 1979 as the pioneering manufacturer of high-performance thermal insulation north of the Yangtze River). Over more than four decades of dedicated materials science research, we have evolved the industry standard from raw wool alternatives to synthetic elastomeric macromolecular compounds designed to meet the rigorous thermal-acoustic performance requirements of modern megastructures.
Kingflex utilizes 5 large-scale automated continuous assembly lines, integrating real-time material feed controls, computer-guided expanding chambers, and high-precision temperature profiling modules. This digital automation infrastructure guarantees a homogeneous microscopic cell configuration across all NBR/PVC matrix sheets and tubes, eliminating weak thermal zones and structural inconsistencies.
Our strategic location in Dacheng gives us unprecedented access to chemical precursors and supply-chain partners, keeping lead times short and raw materials highly traceable. Recognized as a key designated production base by the Ministry of Energy, Ministry of Electric Power, and Ministry of Chemical Industry of China, we provide critical support to major national and international infrastructure works.
Our flagship elastomeric rubber foam insulation rolls and piping components are customized for sound absorption, thermal barrier effectiveness, and mechanical resilience. Designed with a micro-void closed-cell layout exceeding 98% density stability, they offer outstanding control over HVAC duct noise and condensation.
| Characteristic Parameter | Black Rubber Foam Insulation Sheet Roll | Black Rubber Foam Insulation Pipe |
|---|---|---|
| Core Base Material | Premium Nitrile Butadiene Rubber / Polyvinyl Chloride (NBR/PVC) | Premium Nitrile Butadiene Rubber / Polyvinyl Chloride (NBR/PVC) |
| Thickness Spectrum | 6mm to 50mm | 9mm to 40mm |
| Inner Diameter (ID) Range | N/A (Flat sheet/roll form) | 6mm to 114mm (Inner Dimension) |
| Material Density | 40 - 55 kg/m³ | 40 - 55 kg/m³ |
| Service Temperature Threshold | -40℃ up to +105℃ | -40℃ up to +105℃ |
| Closed Cell Rate | > 98% uniformly expanded micro-cavities | > 98% uniformly expanded micro-cavities |
| Water Vapor Permeability | High moisture resistance factor (μ ≥ 7,000) | High moisture resistance factor (μ ≥ 7,000) |
The viscoelastic foam structure attenuates high and low-frequency HVAC noises, including airflow turbulence, damper vibration, and fan hum.
A closed-cell configuration locks dry air in place, minimizing thermal conductivity to prevent condensation and optimize energy use.
Formulated with premium fire retardants, our materials self-extinguish quickly and emit minimal smoke during a fire event.
Modern commercial, industrial, and high-occupancy structures require smart thermodynamic separation and acoustic isolation. Kingflex's duct acoustic lining products are widely used in critical industries worldwide:
Installed as an internal lining in rectangular and circular HVAC metal ducts, mitigating fan noise and air friction in office towers, retail malls, and municipal centers.
Fiber-free, closed-cell construction prevents airborne particulates. It does not harbor mold or microbial growth, maintaining the indoor air quality (IAQ) required in surgical suites and biotech spaces.
Provides protection for low-temperature process lines, steam vessels, and sub-zero cold chain transport against moisture ingress and extreme environmental exposures.
Our dedicated research division features 8 specialized materials engineers who work with top academic institutions to optimize our formulas. We focus on enhancing the sound absorption coefficient (NRC) within the 125Hz to 2000Hz band and reducing the emissions of volatile organic compounds (VOCs).
Kingflex products comply with rigorous international testing frameworks, giving procurement managers confidence in local code approval. Our certifications include:
As energy performance codes tighten and green building regulations expand, Kingflex continues to invest in next-generation material designs:
By blending silica aerogel particles into our NBR/PVC polymer matrix, we aim to lower thermal conductivity to under 0.030 W/(m·K), reducing insulation thickness requirements in tight plenum designs.
We are developing non-leaching, silver-ion surface treatments that resist microbial growth, ensuring high indoor air quality for advanced medical cleanrooms and biotech centers.
Every batch of raw compound goes through rigorous mechanical and thermal analysis. We test our products under extreme simulation conditions—varying relative humidity from 10% to 95% and temperatures from -50°C to +120°C—to ensure the foam structure does not degrade, compress, or lose its sound absorption capabilities over its 15-year lifecycle.
Kingflex supports international contractors, engineering consultants, and industrial procurement managers. We provide customizable thickness selections, aluminum foil coverings, pressure-sensitive adhesive linings, and flexible packaging sizes.
Our logistics department coordinates domestic rail transport, major maritime port connections (including Tianjin/Port of Tianjin), and custom packaging protection. This ensures your materials arrive at the job site dry and free of compression damage, ready for installation.
With over 16 years of export experience to 66+ countries, Kingflex has built a reputation for consistent quality and reliability. Below are verified logs and feedback showing our project engagement:
Get answers to common technical, regulatory, and logistics questions about Kingflex's duct acoustic linings and thermal insulation products:
It is primarily used for lining HVAC ductwork, commercial air conditioning pipes, building envelopes, high-capacity cold rooms, and industrial process pipelines. Its main goals are controlling ambient noise, absorbing sound energy, preventing condensation, and maintaining thermal separation.
Yes. Our elastomeric rubber foam products are formulated with active fire-retardant agents. They comply with major international fire safety standards, including BS 476, UL94, and ASTM E84, helping prevent flame spread and minimize smoke density during a fire.
Rubber foam features a flexible, closed-cell, fiber-free structure that naturally resists moisture absorption, making it ideal for HVAC lines, cold-temperature environments, and indoor air quality applications. Rock wool is a high-density mineral fiber designed primarily for high-temperature settings and heavy fire protection.
Yes. We offer OEM and ODM services. We can customize density, wall thickness, inner diameter sizing, roll length, self-adhesive backing configurations, and external foil barriers to meet your project specifications.
Kingflex insulation products have successfully passed BS 476, CE, REACH, RoHS, UL94, and ASTM testing criteria. Our manufacturing facility also maintains ISO 9001 and ISO 14001 certifications.
Yes. We maintain strict batch-traceability protocols. Every raw compound mix, raw material shipment, and finished product roll is coded with production data, letting us track product history from initial mixing to shipment.
Our automated continuous lines can produce sheets ranging in thickness from 6mm up to 50mm, letting you select the exact dimension needed for your specific thermal and acoustic insulation requirements.
Under typical operating temperatures (-40°C to +105°C) and with proper installation, Kingflex products maintain their structure, thermal conductivity, and acoustic properties for a service life of 10 to 15 years.
Our logistics team manages every step of the export process, from packaging in our warehouse to transport coordination. This ensures your materials arrive undamaged and ready for installation.
