Effective acoustic control requires a meticulous balance between sound barrier blocking and open-cell sound absorption.
In modern construction, industrial HVAC, and heavy processing fields, noise pollution is not just a comfort hazard but a key metric of structural and environmental compliance. Premium sound-absorbing insulation works by converting acoustic pressure waves into low-grade thermal energy via friction within a highly engineered material matrix.
Standard closed-cell elastomeric foams, while exceptional for thermal dampening and prevention of moisture vapor intrusion, are systematically modified by Kingflex using open-cell micro-structures or density variations. This dual action blocks structure-borne vibration and dampens airborne reverberation across low, mid, and high-frequency spectrums.
A comprehensive manufacturing and trading combo pioneering green, energy-saving material systems from the industrial heart of China.
Founded by the Jinwei Group, which holds a proud history extending over 40 years since its establishment in 1979, Kingflex stands as the first thermal and acoustic insulation materials manufacturer established north of the Yangtze River.
Operating from Dacheng, China—globally recognized as the capital of green-building materials—we have focused our research, development, and production infrastructure on energy conservation and consumption reduction. Our integrated business model combines consulting, customized R&D, high-volume production, professional installation guidance, and global post-sale technical services to lead the global building materials industry towards zero-loss thermal performance.
At Kingflex, innovation drives our manufacturing processes. Our specialized R&D Department is staffed by 8 professional insulation engineers who focus on optimizing polymer formulations and cell geometries to advance thermal resistance and noise reduction coefficients.
With 6 professional international sales specialists and 230 dedicated workers operating our automated fabrication lines, we ensure a seamless process from technical inquiry to port delivery. We work to lower total cost of ownership (TCO) for global developers, pipeline contractors, and procurement managers.
Advancing beyond traditional mineral wool and raw rubber compounds, our laboratory focuses on next-generation insulation chemistry. Our technology roadmap addresses three pillars of performance.
Blending NBR/PVC matrix elastomers with microscopic cell expansion regulators. This maximizes structural resilience while maintaining a high closed-cell rate (>98%) for consistent thermal and acoustic impedance.
Integrating aluminum foil shields and self-adhesive layers directly onto the sheet roll during dynamic extrusion. This prevents skin tears and maintains vapor barrier continuity.
Developing bio-based polyols and halogen-free fire retardants. This supports LEED v4 and BREEAM certifications by lowering VOC outgassing without compromising UL 94 flame ratings.
Kingflex structures rubber foam and rock wool variations for compatibility across building envelopes and industrial piping networks.
Our high-density sheet roll is engineered for large HVAC duct surfaces, mechanical plenums, and storage tank walls.
| Parameters | Kingflex Specification Range |
|---|---|
| Material Composition | Premium NBR (Nitrile Butadiene Rubber) / PVC Blend |
| Available Thicknesses | 6mm, 9mm, 13mm, 19mm, 25mm, 32mm, 40mm, 50mm |
| Density Range | 40 kg/m³ to 55 kg/m³ (Custom high density options available) |
| Operating Temperature | -40℃ to 105℃ (Ideal for both hot water and chilled water applications) |
| Closed-Cell Ratio | > 98% for excellent moisture barrier & structural longevity |
| Compression Resilience | > 80% recovery under standard structural pressure |
Designed for piping insulation, preventing condensation, heat gain/loss, and structural noise transmission.
| Parameters | Kingflex Specification Range |
|---|---|
| Core Materials | Nitrile Rubber & Vinyl Plastics Base (NBR/PVC) |
| Wall Thickness Range | 9mm, 13mm, 15mm, 20mm, 25mm, 30mm, 40mm |
| Internal Diameter (ID) | 6mm to 114mm (Accommodates diverse copper & steel pipe runs) |
| Moisture Resistance | High water vapor resistance factor (μ > 10,000) |
| Coating Quality | Even spray-coating using computerized extrusion lines |
| Industrial Standards | BS 476, ASTM E84, CE Mark, RoHS, REACH, UL 94 |
Providing specialized insulation systems across diverse industrial sectors.
Acoustic linings minimize fan drone, high-frequency turbulence, and crosstalk noise within galvanized sheet ducts. They prevent metal casing reverberation and condensation on external surfaces.
Specifically designed cryogenic elastomeric systems control intense cold gradients (-40℃ to -196℃). This minimizes thermal shock risk and prevents ice formation on gas transport lines and process pipes.
Combining rock wool and glass-fiber compositions to provide thermal stability for power plant steam pipes, process furnaces, and industrial exhaust ducts.
Delivering stable supply and cost efficiency for large-scale global projects.
With 5 automatic lines yielding over 600,000 cubic meters annually, Kingflex is a designated supplier for major energy, chemical, and electrical projects.
Our automated manufacturing system controls temperature, pressure, and polymer distribution. This ensures that every sheet roll and pipe section maintains uniform cell structural density. By sourcing raw materials directly, we buffer global customers against market price fluctuations and supply chain disruptions.
Every product batch is documented, tested, and certified for performance.
To meet the requirements of international project audits, Kingflex maintains a strict testing and compliance schedule. Our acoustic and thermal materials are certified to BS 476, CE, REACH, RoHS, UL 94, and ASTM standards.
We operate a barcode-driven ERP system tracking each production batch from raw polymer sourcing, curing, and packaging to final dispatch. This ensures reliable tracking information is available for QA audits and site inspectors.
Transparent communication, consistent quality control, and direct support.
We work with industrial distributors, HVAC mechanical contractors, and engineering consultants to streamline procurement.
We provide clear documentation, batch test certificates, and responsive messaging to keep projects on track. Below are screenshots of direct chats with some of our global distribution partners.
Answers to key technical questions from engineering consultants and procurement managers.
Operating high-capacity storage yards and dispatch systems to coordinate international shipping routes and container space.
Feedback from industrial distributors, commercial MEP contractors, and acoustic system developers.
"Kingflex's 25mm rubber foam sheet rolls met our acoustic and fire safety requirements for our commercial project. The material was easy to install and performs consistently."
"Our audit required complete component traceability. The Kingflex team provided raw material batch codes, CE documentation, and BS 476 fire test records promptly."
"We used their cryogenic rubber foam systems for our pipeline installations. The material handles low-temperature cycles reliably and resists moisture penetration."
A view of our Dacheng production facility, packaging floor, and global logistics prep.
Kingflex