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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.
Advantages
- Retains polyurethane foam’s chemical and solvent properties under heat
- Accommodates low-cost heat-forming methods
- Bonds easily
- Accepts variety of adhesives and coatings
Applications
- Composite panel cores
- Detailed structures and compound-curved surfaces
Sizing Chart
| Products | Density (lbs/ft3) | Height | Width | Length |
|---|---|---|---|---|
| FR-4305 | 5 | 24 | 48 | 120 |
| FR-4305 | 5 | 24 | 48 | 96 |
| FR-4310 | 10 | 24 | 48 | 96 |
| FR-4315 | 15 | 24 | 48 | 96 |
Shown are maximum standard stock sizes based on density. Custom sizes are available. Cut sizes are available from .125 inches (3.175 mm) up to standard stock heights as listed above.
| Products | Density (kg/m3) | Height | Width | Length |
|---|---|---|---|---|
| FR-4305 | 80 | 60 | 120 | 300 |
| FR-4305 | 80 | 60 | 120 | 240 |
| FR-4310 | 160 | 60 | 120 | 240 |
| FR-4315 | 240 | 60 | 120 | 240 |
Shown are maximum standard stock sizes based on density. Custom sizes are available. Cut sizes are available from .125 inches (3.175 mm) up to standard stock heights as listed above.
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