Custom Solutions for Mass Transportation

Industry Applications: Thermal, Acoustic, Vibration, and Air and Fluid Transfer

Custom Foam Solutions for Mass Transportation

Polymer Technologies’ insulation materials have been used for many years in the engine compartments, ceilings, walls, and flooring of buses and railcars. Over the last decade, many of our materials have been used to comply with the more stringent requirements of Federal Transit Authority Docket 90, which calls for greater flame resistance, lower smoke generation, and lower toxicity emissions of materials used in these applications.

Insulation for Engine Compartments and Firewalls

Acoustic Insulation for Engine Compartments

Polymer produces a variety of products to insulate engine compartments and firewalls in the mass transportation industry. These products include POLYDAMP® acoustical foams and POLYDAMP® acoustical foam barrier composites, which are urethane and vinyl-based materials for where motor vehicle safety standards (FMVSS-302) are required.

Acoustic Insulation for Rail and Bus Applications

Acoustic Insulation for Bus

For rail and bus insulation requiring Docket 90 compliant materials, Polymer produces POLYDAMP® Melamine foams and POLYDAMP® Hydrophobic Melamine foams.  These products are produced with and without POLYDAMP® acoustical barriers and facings.   

POLYDAMP® materials can be tuned to specific frequencies or temperature requirements within the area. This focuses on retaining the noise and reducing transmission loss, reducing the noise penetrating into the passenger compartment or to passersby.

When resonance within the structure is evident, Polymer provides extensional dampers with varying degrees of flame retardancy. As with all noise control applications, gaskets should be used to seal any acoustical leaks, holes, or gaps.

Insulation for Walls and Ceilings

Thermal Insulation Materials

Polymer produces Docket 90 compliant POLYDAMP® Melamine and Hydrophobic Melamine foams with and without film facings for acoustical and thermal control in walls and HVAC ducting.  POLYDAMP® Hydrophobic Melamine foam (PHM) is more water repellent than the traditionally used standard POLYDAMP® Melamine foam.  This foam material also offers safety over long term use. POLYDAMP® foams have a lower weight than fiberglass materials that have traditionally been used in railcars and buses. 

Film facings include reinforced aluminum foil and other Docket 90 compliant films for additional durability and thermal resistance.

Acoustic Insulation for Flooring

Noise Insulation Materials

POLYDAMP® Acoustical Barriers and Extensional Damping Materials can be used to reduce the transmission of road noise from wheels and flooring structures. These products are available in both Docket 90 and FMVSS302 formulations.

For more information on these specific products, please see our POLYFORM® Acoustical Foam/Barriers/Damping/Vibration Isolation pages.

High-Performance Hoses for Air and Fluid Transfer

air and fluid transfer for buses and trains

Polymer offers a variety of high-performance hoses that can be used for air and fluid transfer applications in mass transit vehicles. Our hoses are designed to meet and exceed industry standards in flexibility, chemical resistance, temperature resistance, and pressure.

Common applications include cooling systems, air intake, exhaust and more. For more information about our air and fluid transfer solutions, see our High-Performance Hoses & Molded Rubber Parts page.

Isolation Mounts for Passenger Comfort

isolation mounts for mass trait vehicles.

We offer a diverse range of elastomeric solutions to mitigate excessive shock and vibration to ensure passenger comfort. Our selection of vibration mounts provides ultra-high resilience to oils and chemicals, a high fatigue life, and different spring rates to meet manufacturer needs. For more about our elastomeric solutions for mass transportation including ArmorFlex® and SquishyFlex® mounts, check out our Elastomeric Solutions for Vibration Control & Shock Isolation page.

Contact us today and we will work with your to develop a custom solution.

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