Thermoplastic elastomers (TPE), sometimes referred to as thermoplastic rubbers, are a class of copolymers or a physical mix of polymers (usually a plastic and a rubber) which consist of materials with both thermoplastic and elastomeric properties. While most elastomers are thermosets, thermoplastics are in contrast relatively easy to use in manufacturing, for example, by injection molding.
Thermoplastic elastomers show advantages typical of both rubbery materials and plastic materials. The principal difference between thermoset elastomers and thermoplastic elastomers is the type of crosslinking bond in their structures. In fact, crosslinking is a critical structural factor which contributes to impart high elastic properties.
Dermasol is a material developed and manufactured exclusively by California Medical Innovations. The thermoplastic elastomer feels remarkably like human flesh and can be made in any color (including clear) and a variety of durometers (hardness). It is especially useful for simulating tissue in organs and body structures for practicing operations and other medical training.