Explore our industry-standard self-adhesive and flexible rubber insulation line engineered for HVAC, ULT, and Cryogenic projects.
The integration of high-tack Pressure-Sensitive Adhesives (PSA) on one side of closed-cell elastomeric rubber foam represents a massive leap in thermal engineering. The key challenges in large-scale HVAC ductwork and flat-surface industrial vessels have traditionally revolved around installation speed, structural bonding longevity, and the prevention of Corrosion Under Insulation (CUI). In high-humidity environments, any air pockets trapped between the metal substrate and the insulation sheet can lead to moisture condensation, which rapidly accelerates rust and thermal bridging.
By applying a high-performance single-sided adhesive layer directly in the factory environment under controlled temperature and tension, manufacturers eliminate variables associated with manual wet glue applications. The adhesive is typically formulated from an acrylic or synthetic rubber base matrix, structurally backed with fiberglass mesh reinforcement to prevent elongation and warping during installation.
The core material consists of a Nitrile Butadiene Rubber (NBR) and Polyvinyl Chloride (PVC) blend. NBR provides high flexibility and elastomeric behavior, while PVC provides chemical resistance and flame retardancy. When expanded using nitrogen gas, millions of micro-cells are formed, with a closed-cell rate exceeding 98%. This high density of isolated cells restricts gas flow, leading to an extremely low thermal conductivity parameter (λ ≤ 0.034 W/(m·K) at 0°C).
The self-adhesive system is engineered to secure instantaneous bonding upon contact with metallic, plastic, and composite substrates. Our factory utilizes three primary categories of adhesive backing:
The closed-cell structure operates as a built-in vapor barrier. Combined with the absolute seal of the self-adhesive backing, it prevents water vapor from penetrating the insulation layer and contacting the underlying metal substrate.
Eliminating manually applied liquid glue reduces total installation time by up to 50% to 60%. This reduces overhead costs, limits VOC emissions on building sites, and streamlines overall project timelines.
Our sheets comply with stringent international standards including BS 476 Part 7 (Class 1), UL 94 V-0 ratings, and ASTM E84 testing, ensuring self-extinguishing characteristics and minimal smoke density levels.
Established by the prestigious Jinwei Group, which traces its lineage back to 1979, Kingflex Insulation Co., Ltd. has served as a cornerstone of China's green building and thermal materials sector. Standing as the first major manufacturer of thermal insulation materials north of the Yangtze River, Jinwei Group provided the foundational technology and operational principles that launched Kingflex into the global market.
Today, Kingflex operates as a comprehensive manufacturing and trading powerhouse. Situated in Dacheng, China—historically celebrated as the capital of energy-efficient green building materials—our facilities combine advanced research, manufacturing output, and modern logistics systems to support energy-saving initiatives across all six habitable continents.
Kingflex maintains 5 large automatic continuous assembly lines, capable of yielding an annual volume exceeding 600,000 cubic meters of premium NBR/PVC elastomeric foam products. Our consistent product quality has earned us formal recognition and supplier status under the Ministry of Energy, the Ministry of Electric Power, and the Ministry of Chemical Industry of China.
Our internal R&D unit features eight dedicated materials science engineers focusing on molecular-level foaming control, low-VOC adhesive systems, and ultra-low temperature cryogenic insulation matrices. We believe in providing complete project-cycle consultation: from early structural engineering designs to post-sale installation supervision.
We supply both pre-cut insulation sheets (rolls) and tubes engineered with options for single-sided self-adhesive coating. The adhesive layer is protected by a release liner (siliconized film or paper) that prevents dirt contamination prior to application.
Large-scale construction and industrial projects demand insulation that performs consistently under stress. Kingflex products are engineered to meet global standards, addressing key challenges in several key fields:
HVAC air distribution systems utilize wide sheet rolls with self-adhesive backing to insulate large rectangular and round duct surfaces. The high-performance adhesive keeps the foam flush against the sheet metal, eliminating air pockets that lead to energy losses and mold development in commercial buildings, hotels, and shopping malls.
In chemical plants, pipelines carrying fluids must maintain precise temperatures. The combination of closed-cell elastomeric rubber foam and high-strength adhesive provides a tight fit on piping systems, offering thermal insulation and corrosion protection by sealing out moisture.
For liquefied gas lines, LNG terminals, and pharmaceutical chilling equipment, our dedicated Cryogenic insulation system manages extreme thermal gradients. Operating at sub-zero temperatures, standard materials can become brittle; however, Kingflex cryogenic formulations maintain elasticity and structural integrity, preventing thermal shock failure.
At Kingflex, we maintain tight control over product quality. Our team consists of 230 manufacturing specialists, 6 international customer support representatives, and 8 materials scientists in our R&D center. Every production batch is subjected to comprehensive testing before shipping:
We work closely with third-party testing organizations to certify our products for diverse international markets. Our credentials include:
The thermal insulation industry continues to adapt to stricter environmental regulations and energy-efficiency targets. As governments implement net-zero building codes, insulation materials must evolve to offer higher performance with lower environmental impact. Kingflex's development roadmap focuses on three main initiatives:
We are transitioning our self-adhesive product lines toward hot-melt, solvent-free adhesives. This shift reduces VOC outgassing, ensuring compliance with indoor air quality regulations like LEED v4 and WELL Building Standard certifications.
Our research team is exploring bio-derived elastomers to partially replace petroleum-based NBR/PVC polymers, reducing the embodied carbon footprint of our insulation products.
For applications where space is limited, we are developing thin aerogel-infused elastomeric sheets. These composites provide excellent thermal resistance (low K-factors) at a fraction of the thickness of traditional foam insulation.
View our project applications and manufacturing operations worldwide.
Kingflex insulation systems installed in major HVAC and cryogenic pipelines globally.
Get detailed technical answers regarding properties, usage, and customization of Kingflex elastomeric materials.
Advanced closed-cell formulations designed to optimize thermal performance across diverse mechanical systems.
We supply a variety of insulation formats designed to meet differing operational environments and technical requirements.
Kingflex
