General Plastics Manufacturing Co. products

LAST-A-FOAM RF-2200 is an advanced dielectric material for use in radomes, antennas and other radio frequency (RF) communication systems. This series of machinable, closed cell polyurethane foams provide an RF-transparent, low-loss protective layer for applications requiring optimal performance where electrical insulative materials are needed. Its Tg exceeds 350°F, increasing the customer’s processing window through improved thermal mechanical properties. This makes it suitable for processing high-temperature composite prepregs, such as those found in radomes and other panels.

LAST-A-FOAM R-3300 is a closed-cell, hydrostatic pressure-resistant polyurethane foam that provides buoyancy to depths of up to 1,200 feet. It is typically supplied uncoated, however we have the ability to coat the foam to enhance its performance. This semi-submersible foam is engineered to resist penetration by water, and is optimal for shallow to mid-water subsea buoyancy systems, marine and underwater robotics applications. Due to its pressure resistance to many fluids and resins, it is also used in resin-transfer molding as a core material.

FR-3700 is a CFC-free, rigid, closed-cell, flame-retardant polyurethane foam available in densities ranging from 3 to 40 pounds per cubic foot. It exhibits a high strength-to-weight ratio due to its cellular structure and cross-linked resin. Because of its closed-cell structure, LAST-A-FOAM FR-3700 has great resistance to water absorption, and will not swell, crack, or split on exposure to water. This series is non-abrasive and can be machined with standard high-speed steel (HSS) cutting tools. It can also be cut cleanly with water jets and traditional wood-carving tools. This flame-retardant polyurethane (PU) foam particularly supports the following industries.

The LAST-A-FOAM FR-3800 FST is a halogen-free polyurethane-based foam core material which complies with fire, smoke and toxicity (FST) requirements, and Ohio State University (OSU) 65/65 heat release standards for applications such as aerospace interiors. It is also compliant with the European Union’s REACH regulation. Used in conjunction with other materials, FR-3800 FST foam core helps improve aesthetics and reduces costs while meeting fire safety requirements. In most cases, these requirements apply to ceiling and wall panels or structures that cover large surface areas within the aircraft. This series is an excellent alternative to thermoplastics foams and honeycomb for core and structural applications.

General Plastics’ LAST-A-FOAM FR-4300 Thermoformable Board Series is a unique flame-retardant structural polyurethane foam. It is ideal for composite panel cores and other structures where compound-curved surfaces or other details can be made with low-cost heat-forming methods. While it is heat-formable, it retains all the chemical and solvent-resistant properties of polyurethane foams. A closed-cell material, it is easily bonded and will accept a variety of adhesives and coatings. This series is non-abrasive and can be machined with standard high-speed steel (HSS) cutting tools. It can also be cut cleanly with water jets and traditional wood-carving tools.

This uniform polyurethane foam board is easily finished or painted for low-cost core applications, hand-carved models, prototypes, CNC-machined topographical maps, industrial patterns, and composite layup tools below 200ºF. his series is non-abrasive and can be machined with standard high-speed steel (HSS) cutting tools. It can also be cut cleanly with water jets and traditional wood-carving tools. Modeling foam is available in densities of 4 to 40 lbs. per cubic ft. as sheet stock as well as large-size blocks. The FR-7100 Series is ideal for applications that call for an economical, versatile and stable stock material.

This flexible series is nearly identical to the TF-6070 Series foams, with the addition of offering flame retardation. These durable, long-lasting foams are formulated to absorb significant energy while protecting payloads. These products offer excellent creep resistance under high static stress, and are available as polyurethane foam sheets and blocks.

Manufacturers in the aerospaceindustry rely on our flexible WSF-1010 self-skinning foam series (also known as integral skin foam) for aircraft interiors. This durable, flame-retardant aerospace polyurethane foam meets FAR 25.853 standards. It is used extensively in flight decks and cabin applications. The softer and more pliable of our flexible urethane foam products, this material is ideal as a flexible seal where aesthetics are important, such as aerospace interior gap seals. It can also be tinted and painted a variety of colors.