Rubber and Plastic Board Selection Guide: Flexible Closed-Cell Insulation for HVAC and Industrial Equipment

In HVAC, cold storage, industrial equipment, roof and wall insulation projects, traditional insulation materials are prone to water absorption, poor fitting, cracking, peeling, and complicated installation. These defects lead to heat loss and condensation and shorten the service life of the insulation system. As a flexible closed-cell foam insulation board, rubber and plastic board features a dense independent cell structure, excellent thermal insulation and moisture resistance, B1 flame-retardant performance, and good flexibility for easy installation. It is a preferred material for thermal insulation on flat surfaces, special-shaped equipment, air ducts and walls, and is widely used in commercial buildings, HVAC systems, cold chain warehouses, industrial workshops and other projects.

Made mainly from rubber and plastic with eco-friendly additives, rubber and plastic board is produced through mixing, closed-cell foaming, forming and cutting. It is classified as a flexible foam rubber and plastic thermal insulation product and complies with national standard GB/T 17794-2021. The board is soft and flexible with a smooth surface and good resilience, requiring no additional moisture-proof layer. Compared with rigid insulation boards, it can fit on flat, curved and special-shaped components, serving as a universal insulation material for civil buildings and industrial fields.

1. Closed-cell Structure with Outstanding Moisture Resistance and Tight Sealing

With a complete independent closed-cell structure, the board has extremely low water absorption and high moisture resistance. Water vapor can hardly penetrate the material, thus fundamentally preventing the board from dampness, expansion and performance failure. Featuring high flexibility, it can be bent freely and fit closely to walls, air ducts and equipment surfaces with tight splicing gaps. It effectively blocks the penetration of cold and hot air and eliminates condensation and dripping. The product resists hollowing, pulverization and deformation during long-term operation, ensuring the overall tightness and stability of the insulation system.

2. Low Thermal Conductivity for Efficient Heat Insulation and Energy Saving

Rubber and plastic board delivers superior insulation performance with a thermal conductivity of ≤0.034 W/(m·K), which effectively blocks heat transfer. It blocks external heat in summer and reduces indoor heat loss in winter. Meanwhile, it meets the cold preservation requirements of cold storage and low-temperature equipment, greatly reducing the energy consumption of air conditioners and refrigeration units. Its stable thermal performance does not decline under fluctuating temperature and humidity, maintaining reliable heat and cold preservation effects for a long time.

3. B1 Flame-Retardant Material for Improved Fire Safety

This product reaches B1 flame-retardant grade in accordance with standard GB 8624-2012. When exposed to open flames, it only carbonizes slowly and will not ignite or spread flames. It produces little smoke and no toxic fumes during combustion. In key fire prevention areas such as buildings, equipment rooms and air duct corridors, it can effectively slow down flame spread and reduce fire risks. Fully meeting fire acceptance requirements of public buildings, high-rise buildings and industrial workshops, it is a safe and reliable insulation material.

4. Wide Operating Temperature Range, Weather Resistance and Long Service Life

Rubber and plastic board can operate stably for a long time within the range of -40°C to 105°C. It features resistance to high and low temperature, acid, alkali, mildew and aging, adapting to harsh environments including indoor and outdoor spaces, humid workshops and ventilation corridors. Light in weight, it has good compression and resilience. Its service life can reach more than 15 years under normal working conditions, reducing subsequent maintenance and replacement costs. Free of formaldehyde and odor, the product is eco-friendly and conforms to health standards for modern building materials.

5. Easy Installation & Universal Application for Various Scenarios

The board is easy to cut and carry without the need for complex tools. It can be directly laid and pasted on all kinds of flat and special-shaped surfaces, shortening construction periods and reducing building load. In construction projects, it is used for thermal insulation of walls, roofs, ceilings, central air conditioning ducts and water supply and drainage systems. For industrial use, it is used for equipment tanks, cold storage bodies, as well as heat and sound insulation of equipment rooms. Custom thicknesses and sizes are available to suit different working conditions, balancing practical performance and project cost.

As a direct manufacturer, we have a full range of rubber and plastic boards in stock. Custom sizes, special facings and OEM services are available. Complete export documents ensure smooth customs clearance worldwide. Feel free to contact us for bulk orders, project selection guidance, or the latest quotations. We will provide you with professional and comprehensive thermal insulation solutions.