This work investigated the effect of type (natural or precipitated) and content of calcium carbonate in ethylene-vinyl acetate foams produced by compression moulding. This processing technique generates various types of heterogeneities in the product, like differences between the skin and the core. The differences in temperature on the mould surface also have a major influence in foam properties. The hardness was shown to vary widely from place to place in moulded samples, and this was related to local variations in temperature. The analysis of the effect of calcium carbonate showed that the precipitated one yield better physical properties like density, hardness and elastic modulus.
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