Uniform Polyurethane Foam Board FR-7100 Multi Use Core for Composites

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

Composite Core

The FR-7100 boards can be used in a number of densities. The ability to integrate high and low densities in one layup makes it a suitable material for composite layups. The material does not contain any mold-release agent to inhibit bonding.

Marine

These products are formulated to meet the requirements of composite boat builders at competitive prices for above water line or marine application: fish boxes, freezer insulation, seat mounting pads, interiors, steering wheel mountings, and decks.

Prototypes and Models

The FR-7100 material is ideal for hand-carved models, CNC-machined topographical prototypes, maps, and industrial patterns.

Tooling and Molds

The LAST-A-FOAM^® FR-7100 products have been used effectively in modeling foam tooling applications for a number of years. This material meets the demands of mold and toolmakers because it is stress-free, and even in density throughout the block. For applications needing greater detail, higher strength, or increased heat and pressure resistance at process temperature, a density of 20 lb. per cubic foot is typically the ideal choice. Common uses include drape-forming tools, composite layup tools, and vacuum-form tools.

Advantages

The main advantages of the FR-7100 are as follows:

• Easily painted and bonded
• Fine cell structure supports very smooth finishes
• Closed-cell foam does not absorb water or moisture
• Grain-free surface
• Cost-effective and versatile
• Dimensionally stable – will not twist, warp, or bow
• Easily shaped with a number of cutting processes

Applications

The main applications of the FR-7100 are as follows:

• Proofing NC/CNC machine programs
• Layup tools
• Composite core
• Prototype models
• Solar: Panel backing and support, parabolic mirror farms
• Marine: Interior, galleys, heads, mounting pads, and more
• Custom parts
• Vacuum-form tools
• Drape-forming tools

Sizing Chart

ENGLISH UNIT (in)

METRIC UNIT (cm)

Shown are maximum standard stock sizes based on density. Custom sizes are available. Cut sizes are available from 0.125 inches (3.175 mm) up to standard stock heights as listed above.