Flexible moulds made from polyurethane rubber

Polyurethane rubber can be used to produce flexible casting moulds. With a Shore hardness of 40 or 60, these moulds are significantly stronger than most silicone moulds. Depending on the type of object to be moulded and especially when moulding smaller objects, this can make the construction of a support mould superfluous. Due to the material's lower flexibility, it is best suited for moulding flat objects without too many small details or undercuts. PUR rubber is very suitable for master models, e.g. made of concrete, plaster, metal or resin.

Since polyurethane rubber has better mechanical and chemical properties than silicone, casting moulds made of this material can be used very well for casting with abrasive materials such as concrete , but also for plaster casting or casting with artificial resins.

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