RMB Polypropylene
Resilient molded plank foam in either polypropylene or polyethylene is the newest entry in the field of cushion packaging foams. Developed over twenty years ago in Europe, RMBs are now starting to appear in the U.S. as a packaging option.
RMBs are notable in their ability to support high levels of weight over long periods of time, without significant loss of cushioning performance or bearing area thickness, a critical dimension if heavy products must withstand rough handling or long periods in storage.
RMB polyethylene is available in either 1.5 or 1.9 PCF densities. The RMB polypropylene is available in either 1.3 or 1.9 PCF densities. Both are available in either black or white colors.
If a high strength foam is needed, this is one to consider. A Houston Foam Plastics representative would like to discuss these products with you to determine their suitability.
| EPERAN Polyethylene | EPERAN PP Polypropylene | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Property | Test Method | Value | |||||||
| Bead Type | Bead Type | ||||||||
| PE 38 | PE 30 | PE 20 | PP 45 | PP 30 | LBS 20 | ||||
| Density | ASTM D-3575 | lb/ft3 | 1.5 | 1.9 | 2.8 | 1.3 | 1.9 | 2.8 | |
| Compressive Strength | ASTM D-3575 | %@ | |||||||
| 25% | 11.4 | 11.4 | 20.2 | 13.6 | 21.5 | 43.4 | |||
| 50% | 19.9 | 21.3 | 33.4 | 21.7 | 32.9 | 58.7 | |||
| 75% | 51.1 | 52.5 | 72.7 | 51.6 | 72.3 | 119.8 | |||
| Tensile Strength | ASTM D-3575 | PSI | 48.3 | 39.8 | 68.9 | 34.7 | 61.4 | 87.5 | |
| Elongation | ASTM D-3575 | % | 34.2 | 38.4 | 28.5 | 16.6 | 15.7 | 13.4 | |
| Tear Strength | ASTM D-3575 | lb/in | 15.2 | 17.4 | 17.9 | 11.5 | 20.3 | 17.7 | |
| Compressive Set | ASTM D-3575 | % | 3.0 | 4.2 | 2.1 | 8.1 | 8.2 | 8.3 | |
| Buoyancy | ASTM D-3575 | lb/ft3 | 60.2 | 60.3 | 59.3 | 61.4 | 60.7 | 59.2 | |
| Thermal Conductivity | ASTM D-3575 | BTU/ft-hr-°F | .028 | .026 | .025 | .024 | .024 | .024 | |
| Combustion Speed | MVSS 302 | in/min | 2.0 | 2.0 | 1.5 | 2.0 | 1.5 | 1.5 | |