Self-skinning Foam

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Self-skinning Foam
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It looks like the manufacturers of this soft coral-pink foam sphere have made a mould of a golf ball, and cast it in a self-skinning polyurethane foam – perhaps as part of a kid’s toy golf set. This material comes in two parts – a liquid and a catalyst, which, when mixed and poured into a mould, will expand up to six times its original size. As it cures, or ‘goes off’, a tough outer flexible skin forms, which picks up the detail in the mould and creates a visible seam line, which needs to be trimmed off. It can be used in open or closed moulds, as the skin starts forming as the material has finished expanding, not when it reaches a surface, or is exposed to air. It’s an example of an open cell, or reticulated foam, with a tough flexible high-density skin and a softer low-density core, which makes it more durable than other foams, as the bubble structure is not exposed. This foam can be made in different levels of hardness for various applications such as in steering wheels, or squeezy stress-balls. Self-skinning foam is also used for special effects and prosthetics like ‘fat suits’ in the entertainment industry as the rubber skin can be moulded and painted to look and behave like human flesh.

Sample ID: 411

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Polymers | Vegetable
Soft | Rubber | Polymer | Foam | Moulded | Polyurethane | Plastic | Red | Sponge | Self-skinning

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