TRYMER® L Series Low Index Polyisocyanurate Foam for Composite and Panel Applications
TRYMER® L Series foam is designed to meet a wide range of end user specifications. As core materials for composite products, Trymer L Series products offer many benefits over conventional polyurethane foams. With nearly 60 years of foam manufacturing expertise behind every Trymer L Series product, ITW Insulation Systems offers a history of experience no other rigid foam manufacturer can claim.
Trymer L Series foam is produced as bunstock in different densities and strengths for a broad range of applications.
Transportation - Lightweight Trymer L Series products lend strength and durability to the roofs, walls and floor panels of trucks and railcars. Their lightweight and aerodynamic designs also can help improve fuel efficiency.
Pultrusion - Owing to the ability of Trymer L Series products to withstand very high temperatures up to 300° F, Trymer core foams can be found in insulated doors, bridge girders and decks, and lightweight, high-strength, corrosion-resistant enclosures for chemical processing operations.
Temporary/Mobile Shelters - Trymer foams are commonly specified as a core material in military shelters and are well-suited for insulated sandwich panels in mobile shelters, as well as modular panels for temporary housing, sunrooms, conservatories, poultry incubators and livestock pens.
Telecommunications Shelters - Trymer L Series core materials answer the call for superior strength and durability in a lightweight profile in telecommunications centers worldwide, protecting sensitive telecommunications equipment and electronics in severe weather conditions.
Cold Storage - Walk-in coolers and freezers, refrigerated warehouses and other temperature-controlled environments benefit from the improved strength, exceptional thermal efficiency and moisture resistance of Trymer L Series products.
Marine - The high strength-to-weight ratio, superior dimensional stability and the smooth uniform surface of Trymer L Series foams makes them the ideal composite materials for stringers, decks, transoms, motor enclosures and hull plugs.
Unparalleled Ease of Fabrication and Accuracy
The superior quality of Trymer core foams is matched only by the caliber of the fabricators, molders and laminators who make up ITW's Authorized Fabricator Network, conveniently and strategically located throughout North America to best meet Original Equipment Manufacturer (OEM) and customer needs. The consistent cell structure and density of Trymer foam enables simple and accurate Computer Numerical Control (CNC) routing.
Trymer L Series products offer numerous benefits, such as the following:
Better Bonding - Trymer L Series foams are specially engineered for structural sandwich panels and other composite applications where adhesion and bonding of facers is critical. Trymer L Series foam can be precision fabricated for compatibility with thermoset resins and most solvent-based adhesives.
Improved Handling - Trymer L Series foam is formulated for optimal tooling and machinability. Compared to other rigid foams, Trymer L Series products hold their shape better during fabrication and various manufacturing processes and resist breakage during both fabrication and installation.
Improved Impact Strength - Available in compressive strengths up to 140 psi (97 kPa), Trymer core materials are able to withstand high impact and heavy loads such as those typical in cold storage racking systems, bridge decks, platforms and other demanding applications.
Improved Structural/Strength Properties - When a core material with high shear, tensile and flexural strength is required for long, support-free spans, Trymer L Series products are an excellent choice.
Table - Physical Properties of TRYMER® Core Materials
Density, pcf (kg/m3)
Compressive Strength, psi (kPa), parallel to rise
Tensile Strength, psi (kPa), 3D ave
Shear Strength, psi (kPa), average of parallel to rise and extruded directions
Flexural Strength, psi (kPa), parallel to rise
Water Absorption, % by vol, 24-hour immersion
R-Value per inch, °Fft2/Btu (m2°C/W)
1 TRYMER® 6000 polyisocyanurate foam features a higher polyisocyanate-to-polyol index than TRYMER® L Series foams. With its high density and exceptional compressive strength, TRYMER® 6000 foam is ideally suited for a variety of thermal insulation and high-strength specialty applications.