Kingflex Kingflex

China Sound Absorbing Mat For Generator Manufacturers & Factory

High-Density Elastomeric Rubber Foam for Precision Noise Attenuation & Thermal Isolation in Power Generation Systems

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Premium industrial elastomer products engineered to reduce high-vibration and airborne acoustics in generator structures.

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Macro Industry Dynamics: Sound Control in Modern Generator Enclosures

A Comprehensive Technical Review of Global Acoustic Control Trends, Sound Absorbing Mat Requirements, and Regulatory Frameworks.

Acoustic Regulation Compliance

Global noise compliance frameworks (such as ISO 8528-10, EU Directive 2000/14/EC, and OSHA regulations) mandate that industrial and residential generator units operate below specific decibel thresholds. Closed-cell NBR/PVC mats deliver high-efficiency noise isolation to bypass these regulatory hurdles easily.

Thermal & Acoustic Convergence

Generators generate intense ambient heat alongside severe vibrations. Kingflex sound absorbing mats dual-function as low-thermal-conductivity isolators (-40℃ to 105℃), preventing convective thermal transfer to the outer metal canopies while simultaneously absorbing mechanical noise waves.

Durability in Harsh Climates

Unlike open-cell PU foam which retains moisture and breaks down under oil mist, closed-cell NBR/PVC structures exhibit extreme moisture resistance (high water vapor diffusion resistance factor) and do not decay when exposed to chemical splash, diesel vapours, or ozone.

Global Corporate Procurement Demands

Modern EPC (Engineering, Procurement, and Construction) companies and generator OEMs face stringent requirements when designing power systems for data centers, medical campuses, and critical infrastructure. The selection of acoustic dampening materials must go beyond basic sound reduction. Procurement engineers require certified materials that guarantee fire resistance (e.g., BS 476 Class 0, UL94, ASTM standards), chemical stability against oils and fuels, and long operational lifetimes without degrading. China-based manufacturing hubs, particularly the Kingflex production facilities, have scaled to address these high-throughput requirements by supplying highly integrated, customizable NBR/PVC acoustic solutions directly to assembly lines worldwide.

The Transition to Advanced NBR/PVC Elastomers

Historically, the market relied on rock wool and open-cell polyurethane mats. However, modern generator canopies suffer from space restrictions, making bulky rock wool installations difficult. Furthermore, open-cell foams act like sponges, absorbing oil, diesel particulates, and water vapor, creating a severe fire hazard. Kingflex elastomeric closed-cell NBR/PVC matrices alleviate these risks entirely. The specialized cellular formulation traps air inside micro-chambers, providing superior acoustic insertion loss within minimal thickness envelopes (ranging from 6mm to 50mm) while ensuring absolute moisture and fire security.

Kingflex Insulation Co., Ltd.

A Leading Manufacturing & Trading Combo for Premium Thermal & Acoustic Systems

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 environmental friendly enterprise concentrating on research, development, production, and sales. In operation, Kingflex takes energy saving and consumption reduction as the core concept.

We provide advanced solutions regarding acoustic and thermal insulation by means of consulting, research and development, custom production, installation guidance, and post-sale service to lead the development of the global building and industrial materials industry.

A Rich Heritage of Expertise: 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, grounding Kingflex's technological roadmap in decades of verified expertise.

Kingflex Company Facility
5
Large Automatic Lines
>600,000 m³
Annual Production Capacity
40+ Years
Group History (Since 1979)
66+
Export Countries Worldwide

Our Production Power

At present, Kingflex has 5 large automatic assembly lines, with an annual production capacity of more than 600,000 cubic meters. Over the decades, Kingflex has become a designated production enterprise designated by the Ministry of Energy, the Ministry of Electric Power and the Ministry of Chemical Industry in China.

Kingflex Production History

Our Engineering Team

Our employees are amazing in their own right, but together they are what makes Kingflex such a fun and rewarding place to work. Kingflex team is a tight-knit, talented group with a shared vision of giving consistently first class service for our clients. Kingflex has 8 professional engineers in R & D Department, 6 professional international sales, and 230 workers in the production department.

Kingflex Engineering Team

Technical Specifications & Material Guidelines

Understanding NBR/PVC dimensions, density thresholds, and performance metrics for acoustic design engineers.

Black Rubber Foam Insulation Sheet Roll

Parameters Standard Specification
Material Composition Nitrile Butadiene Rubber (NBR) & Polyvinyl Chloride (PVC)
Thickness Range 6mm - 50mm
Core Density 40 - 55 kg/m³
Service Temperature Range -40℃ to 105℃
Closed-cell Rate >98%
Thermal Conductivity (λ) ≤0.034 W/(m·k) at 0℃

Acoustic Advantages: 1. Foams evenly and fully, closed cell rate over 98%, excellent thermal insulation. 2. Full closed-cell structure, low moisture absorption, stable long-term thermal conductivity. 3. Compression resilience over 80%. 4. Flame retardant, self-extinguishing off fire. 5. Low thermal conductivity, high moisture resistance factor.

Black Rubber Foam Insulation Pipe

Parameters Standard Specification
Material Composition NBR/PVC Elastomeric Matrix
Thickness Range 9mm - 40mm
Inner Diameter (ID) 6mm - 114mm
Core Density 40 - 55 kg/m³
Service Temperature Range -40℃ to 105℃
Manufacturing Standard Professional pipe spraying extrusion

Acoustic Advantages: 1. Foams evenly and fully, closed cell rate over 98%, excellent thermal insulation. 2. Professional pipe spraying equipment ensures even coating. 3. Compression resilience over 80%. 4. Flame retardant, self-extinguishing off fire. 5. Low thermal conductivity, high moisture resistance factor. 6. Greatly reduce pipe freezing and cracking risks.

Engineering & Dimension Charts

Macro Industry Solutions: Where Performance Matters

How Kingflex acoustic elastomeric insulation systems are designed to operate across diverse, high-stress commercial and industrial sectors.

HVAC & Central Air Conditioning

Providing high-efficiency heat and sound insulation for complex air duct systems and piping. Eliminates condensation, blocks compressor resonance, and secures energy-saving cooling pathways in large-scale commercial real estate.

Civil & Commercial Building Shells

Excellent solution for interior and exterior walls, multi-layered roofs, and basement acoustic absorption. Significantly reduces environmental airborne noise and keeps standard indoor acoustics comfortable.

Industrial & Process Piping

For high-intensity petrochemical plants, cryogenic facilities, gas transportation networks, and industrial steam units. Reduces thermal loss and prevents corrosion under insulation (CUI) through premium moisture-barrier ratings.

Hospital & Critical Care Power Backup

In healthcare facilities, emergency diesel generators must start instantly and run quietly without disrupting patients. Kingflex closed-cell generator mats line the inner shell of generator rooms and enclosures, absorbing structural vibrations and attenuating decibels directly at the source.

Rail Transit & Marine Operations

Designed to survive the severe structural shaking and humidity found in railway engines, cargo ships, and marine offshore rigs. Resistant to salt-spray and heavy oils while functioning as a continuous sound barrier.

State-of-the-Art Research & Certifications

Kingflex Insulation Co., Ltd. continuously invests in advanced testing, chemical material synthesis, and microcellular foam manufacturing innovation to sustain its leading technical roadmap.

Our dedicated team of eight professional R&D engineers designs custom formulations to improve fire ratings, physical durability, and acoustic frequency attenuation rates. Kingflex products have passed rigorous testing parameters worldwide to obtain global regulatory entry tickets.

  • BS 476 Class 0: Highest British fire safety rating for building materials.
  • UL94 Certification: Verified flammability performance for plastic/elastomer safety.
  • CE Mark: Full compliance with European health, safety, and environmental protection standards.
  • REACH & RoHS: 100% free of hazardous compounds, ensuring green eco-building standard integration.
  • ASTM Standards: Absolute verification of thermal conductivity and vapor transmission metrics.
R&D Lab Test 1 R&D Lab Test 2 R&D Lab Test 3
Certificate 1 Certificate 2 Certificate 3 Certificate 4

Verified Customer Relations & Site Showcases

Real feedback screenshots and field applications highlighting global projects and supplier trust.

Client Dialogue Screenshots

Customer Chat 1
Customer Chat 2
Customer Chat 3
Customer Chat 4
Customer Chat 5

Project Sites Installations

Installation 1

Engine Enclosure Liners

Installation 2

Industrial Compressor Insulation

Installation 3

Heavy HVAC Duct Isolators

Installation 4

High-Density Pipe Jackets

Original Kingflex Product Catalog

Full list of standard production models from Kingflex thermal & soundproof facility.

Rubber elastomeric foam insulation tube
Rubber elastomeric foam insulation tube
Closed-cell elastomeric construction for hot and cold air pipes.
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Corrosion Resistant Rubber Foam Insulation Tube
Corrosion Resistant Rubber Foam Insulation Tube
Extra barrier protection designed to prevent corrosion under insulation (CUI).
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Elastic Rubber Foam Insulation Pipe
Elastic Rubber Foam Insulation Pipe
High elasticity for complex layouts and fast installation.
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Black Rubber Foam Insulation Pipe
Black Rubber Foam Insulation Pipe
Standard high density, anti-condensation NBR/PVC pipe.
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Foam Rubber Foam Insulation Tube
Foam Rubber Foam Insulation Tube
Flexible elastomer for low temperature preservation.
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HVAC Rubber Foam Insulation Tube
HVAC Rubber Foam Insulation Tube
Best-in-class performance for modern AC air systems.
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Elastomeric rubber foam insulation system
Elastomeric rubber foam insulation system for utility
Integrated system for high mechanical security projects.
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Kingflex flexible insulation material
Kingflex flexible insulation material for cryogenic
Specialist cryogenic compound for liquid gas pipelines.
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Cryogenic rubber foam
Cryogenic rubber foam for low temperature and high
Dual temperature protection structure.
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Elastomeric cryogenic insulation
Elastomeric cryogenic insulation for low temperature
Optimal system for refrigeration lines.
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Rock Wool Insulation Boad
Rock Wool Insulation Board
High density fiber for extreme temperature systems.
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rock wool thermal insulation blanket
Rock wool thermal insulation blanket
High heat structural protection for process equipment.
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Plant Production & Finished Stock Gallery

A live look into our factory production yards and packaging lines.

Technical Q&A: Acoustic Engineering & Operations

Expert answers regarding material parameters, certifications, customization options, and application instructions.

Q1: What is elastomeric rubber foam insulation used for?
It is mainly used for HVAC ducts, air conditioning pipes, building thermal insulation, industrial pipeline cold insulation, and sound insulation in high-vibration systems like diesel generator enclosures.
Q2: Is Kingflex rubber foam insulation fire resistant?
Yes, our rubber foam insulation is flame retardant and self-extinguishes upon fire contact. It fully meets strict international building and industrial safety regulations (including BS 476 Class 0 and UL94).
Q3: What is the difference between rubber foam and rock wool insulation?
Rubber foam is highly flexible, features a closed-cell moisture-proof matrix, and is lightweight, making it ideal for HVAC, generator enclosures, and anti-condensation applications. Rock wool is high-temperature resistant and fibrous, suitable for extreme furnace pipes but prone to absorbing oil/water if unprotected.
Q4: Do you provide customized insulation products?
Yes, we support comprehensive OEM/ODM services. We adjust thicknesses (from 6mm up to 50mm), densities, surface coatings (such as aluminum foil or self-adhesive backings), and dimensions to match your project specifications.
Q5: What certifications do your products have?
Our products have successfully passed BS 476, CE, REACH, RoHS, UL94, ASTM, and other global industrial testing standards, ensuring total compliance on international construction sites.
Q6: Does Kingflex products have traceability?
Yes, we implement a strict batch-coding control protocol across all 5 automatic lines. Every shipment, from raw elastomer mixing to finished mat cutting, is traceable back to its production time and lab test logs.
Q7: What thickness of Rubber foam insulation sheet roll can you produce?
We can continuously extrude and vulcanize thicknesses ranging from 6mm up to 50mm to meet different thermal and noise control demands.
Q8: What is the service life of rubber plastic pipe and board?
When installed correctly under standard operating temperatures (-40℃ to 105℃), our NBR/PVC systems deliver a working lifetime of approximately 10 to 15 years.
Q9: Why is NBR/PVC closed-cell foam preferred over PU foam for generator canopies?
Generator cabins are harsh environments containing high heat, vibration, and fuel vapor. Polyurethane (PU) foam has an open-cell matrix that absorbs oil vapor and decomposes over time. Kingflex NBR/PVC is closed-cell (rate >98%), preventing liquid and gas ingress, and maintaining stable physical, acoustic, and fire ratings for years.
Q10: How does Kingflex support global logistics for large-scale energy projects?
With an annual capacity of 600,000 cubic meters, we manage container shipping directly from our Dacheng facility. We compress roll sheets into optimized vacuum-packed configurations to lower freight volume, reducing shipping costs and transit damage for international buyers.

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