VEF-121 is our latest version of polyurethane open-cell flexible foam with viscoelastic property for a variety of cushioning and other custom applications. This formulation can be processed at room temperature, and may be processed manually without using a dispensing machine for smaller shot-size products at a lower production rate.
The cured foam has a very low deflection against a compression force. Foam recovers slowly after load is removed. The foam stays flexible at very lower temperature.
The component materials are low viscosity liquid at room temperature. The pot-life is above 25 seconds, which allows small amounts to be batched manually. VEF-121 provides a range of foam consistency to be adjusted by varying the mixing ratio between the part-A/ part-B components. The recommended mixing ratio range is between 100:260 and 100:300 = part-A: part-B by weight. A higher part-B ratio makes foam with slower recovery rate and smaller compression deflection.