Soft Foam

Written by Patricia Skinner
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For many applications, polyurethane foam is required in its rigid form. These uses include insulation for a wide range of jobs, and certain packaging applications. However, it can be supplied as soft foam when that is required. When mixed with resin it forms the perfect soft foam for theater props such as costumes and body parts, cushions, and more.

Because of the resin, soft foam is quite a bit heavier than rigid foam. Like any foam, the density can be controlled during production to suit the project at hand. Often this type of foam is used for furniture manufacture. It is the type of foam that would be used for marine upholstery: you wouldn't use the same foam that you'd use for creating buoyancy, for example, because it is inflexible.

Soft Foam and Insulation

Although it's not ideal for the purpose, soft foam is still used for insulation, particularly where a flexible solution is sought. Rigid foam will crack and split if it is applied to moving parts, so this would be an application where you'd be looking at using some kind of soft foam. Even flexible foam is a fairly efficient insulating material.

Some kind of packaging requirements dictate the use of soft foam too. The advantage with using flexible foam is that you could use your packaging more than just once, as is the case with spray in place foam. In some instances this would be an ideal situation where you could save money on your packaging by recycling.

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