Kingflex
Kingflex
Explore our elite grade of closed-cell elastomeric rubber foam sheets, pipes, and specialized barrier systems engineered to handle aggressive acoustic environments and harsh thermal thresholds.
Modern commercial design, HVAC mechanical systems, and heavy industrial processing facilities demand highly specialized insulation that concurrently achieves minimal thermal transmittance and high acoustic dampening. Elastomeric rubber foam has emerged as the premier material class due to its unique viscoelastic structure and high-density, closed-cell geometry.
As sound waves encounter the elastic cell membranes of NBR (Nitrile Butadiene Rubber) and PVC blends, their vibrational energy is converted to thermal energy through friction within the matrix. Combined with a thermal conductivity performance threshold often below 0.034 W/(m·K), elastomeric rubber stands as an all-in-one system for acoustic damping, anti-condensation, and high-efficiency thermal performance.
Unlike basic structural materials, industrial rubber acoustic sheets operate under precise thermodynamic and acoustic physics parameters.
| Performance Parameter | NBR/PVC Elastomeric Rubber | Traditional Rock Wool / Mineral Fiber | Test Methods & Standard Compliance |
|---|---|---|---|
| Thermal Conductivity (λ) | ≤ 0.034 W/m·K at 0°C | 0.038 - 0.044 W/m·K | ASTM C518 / ISO 8301 |
| Moisture Resistance Factor (μ) | ≥ 10,000 (Built-in Vapor Barrier) | μ = 1 (Highly Permeable) | BS EN 12086 / DIN 52615 |
| Acoustic Absorption Coefficient | Excellent at Low-Mid Frequencies (Viscous Damping) | Excellent at High Frequencies (Porosity Damping) | ISO 354 / ASTM C423 |
| Fire Safety Rating | Class 0 / Class 1 Flame Spread | Non-Combustible (A1 Class) | BS 476 Part 6 & 7 / UL 94 V-0 |
| Service Temperature Limit | -40°C to +105°C (Up to -200°C for Cryogenic) | Up to 650°C | ASTM C411 |
| Density Range | 40 - 55 kg/m³ | 60 - 150 kg/m³ | ASTM D1622 |
Viscoelastic materials exhibit both viscous and elastic characteristics. The cell structures in Kingflex sheets deform under acoustic pressure, absorbing physical energy and reducing structural noise transmissibility in ductworks and walls.
Condensation creates structural corrosion (under insulation) and promotes mold. With a closed-cell rate exceeding 98%, our NBR/PVC sheets lock out moisture, maintaining dry conditions even in high-humidity mechanical installations.
Meets rigorous BS 476, CE, REACH, RoHS, UL94, and ASTM certifications. When exposed to flames, the material generates minimal smoke and self-extinguishes instantly without releasing molten droplets.
Kingflex Insulation Co., Ltd. is a professional manufacturing and trading combo for thermal and acoustic insulation products. Our research, development, and primary production facility is located in Dacheng, China—widely recognized as the national capital for green building materials. As an energy-saving, environmentally friendly enterprise, we concentrate on the development, production, and worldwide sales of advanced elastomeric solutions.
Established under the Jinwei Group, which holds a prestigious heritage dating back to 1979 as the first manufacturer of thermal insulation materials north of the Yangtze River, Kingflex builds on more than 40 years of manufacturing excellence. We guide clients through the entire project life cycle—from initial engineering consultations, R&D trials, and physical testing to site installation guidelines and post-sale compliance tracking.
At present, Kingflex operates 5 large automatic continuous foaming lines. This setup gives us an annual production capacity of over 600,000 cubic meters. Our production capability is officially recognized by China’s Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry, establishing Kingflex as a designated manufacturing enterprise.
The core of our quality control lies in our engineering laboratory. Kingflex employs eight professional research and development engineers, 6 international sales specialists, and over 230 highly trained industrial operators. Our production workflow integrates real-time laser thickness sensors and online density meters to ensure cell uniformity across entire rolls and pipes.
Every single production batch of Kingflex elastomeric foam undergoes strict tracing protocols. An ink-jet printed serial number on the reverse of the sheets or inside the piping wall displays the batch number, polymer formulation, density index, and certification standard. This enables full tracking throughout transport and field installation.
To ensure seamless project approval by international engineering consultants, Kingflex products maintain rigorous compliance with major global testing agencies.
Ensuring hazard-free chemicals for high-occupancy European commercial buildings.
British fire propagation standard compliance for structural safety.
Certified international production management and quality tracking workflows.
Premium US standards compliance verifying flame retardancy and thermal resistivity.
Kingflex designs complete insulation packages tailored to specific performance requirements across diverse industrial sectors.
Large-format, high-density elastomer boards lining metal ducts help attenuate noise generated by fans and high-velocity airflow. At the same time, they control condensation and limit thermal transfer across structural pathways.
For operations extending down to -200°C (such as LNG processing and liquid oxygen installations), Kingflex provides specialized low-temperature, multi-layer synthetic elastomeric systems that remain flexible and crack-resistant under extreme thermal shock.
Anti-corrosive and moisture-proof insulation tubes protect piping from environmental degradation. They reduce energy loss in chemical lines and dampen structural vibrations across standard pipe hangers.
Industrial procurers need clear, transparent details to forecast costs accurately. Several factors determine the cost structure of elastomeric rubber foam materials:
By producing directly in Dacheng's green materials hub, Kingflex achieves production efficiencies that lower costs by 15-20% compared to local distribution models. Combined with our 5 automated lines and direct container shipping logistics, we ensure stable pricing structures and high supply chain reliability for large infrastructure projects.
Real-world results showcase the performance and reliability of Kingflex insulation solutions across international commercial and industrial builds.
The acoustic and thermal insulation market is evolving rapidly. Future product lines are driven by three main factors: global decarbonization, VOC emission reduction, and hybrid damping materials.
Our long-term developmental roadmap centers on integrating biopolymers into Nitrile base resins to lower the carbon footprint of production. We are also researching hybrid structures that combine aerogel layers with elastomeric bases to provide thermal stability at even lower material profiles.
Kingflex's acoustic research laboratory is working to optimize the open-cell surface profile of elastomeric products. Standard NBR provides good dampening. However, developing micro-perforated channels in semi-open cells allows our sheets to target and isolate specific fan frequency ranges (such as 250Hz - 500Hz), creating customized soundproof barriers for HVAC designs.
Technical specifications for our core product lines: Black Rubber Foam Insulation Sheets and Pipes.
Standard Dimensions & Material Properties:
Advantage & Key Features:
1. Even foaming with a closed-cell rate exceeding 98% for reliable thermal performance.
2. Built-in vapor barrier provides long-term resistance to moisture and condensation.
3. Compression resilience rating above 80% prevents flattening at high pressure points.
4. Reliable flame retardancy with self-extinguishing properties upon removal of fire source.
5. Low thermal conductivity coefficient combined with a high moisture resistance factor (μ).
Standard Dimensions & Material Properties:
Advantage & Key Features:
1. Uniform foaming across the tube profile ensures consistent insulation thickness.
2. Advanced co-extrusion technology creates smooth internal walls for easy installation.
3. Flexible structure simplifies application around elbows, bends, and T-junctions.
4. Effective flame retardancy helps prevent the spread of fire along piping systems.
5. Controls heat transfer and stops condensation on chilled water and refrigeration lines.
6. Elastic composition reduces transmission of vibration and mechanical noise.
Kingflex products are specified worldwide across diverse construction, commercial, and industrial projects.
Applied to large air ducts and handling units in commercial malls, hotels, and airports to prevent thermal loss and deaden fan noise.
Protects plumbing lines and AC water pipes from freezing or condensation-induced corrosion (CUI) in high-humidity climates.
Used as an underlayment in multistory apartments, schools, and offices to reduce impact noise transmission between floors.
Insulates engine compartments, deckheads, and bulkheads to provide thermal protection and dampen acoustic vibrations.
Insulates high-vibration steam pipelines and chemical reaction tanks, preventing structural fatigue and reducing acoustic emissions.
Maintains process stability in ultra-low temperature liquid natural gas (LNG) systems and industrial refrigeration lines.
Every production run undergoes a documented, multi-step quality control process to guarantee material consistency.
Nitrile butadiene rubber (NBR) and polyvinyl chloride (PVC) raw resins are analyzed to verify chemical composition, purity, and compound ratios before vulcanization.
Our 5 continuous foaming lines use computer-controlled temperature profiling to create an even, fine-cell matrix throughout the material.
Laser sensors monitor sheet thickness, while continuous scales track density deviations across the entire extrusion width.
Technical answers to help engineers, specifiers, and procurement managers evaluate rubber acoustic insulation.
Discover our technical line of protective coatings, extra-thickness rolls, mineral fiber solutions, and low-temperature elastomeric products.
