Patent ID: 7520953

Claim:
A process for producing moldings of compressed graphite expandate, which comprises the following steps: producing planar pre-formed pieces having a density of from 0.01 g/cm 3 to 0.2 g/cm 3 from graphite expandate having a density of from 2 g/l to 20 g/l; stacking at least two of the pre-formed pieces on top of each other; and bonding the pre-formed pieces under the influence of pressure into a single-piece molding, while compressing the graphite under the influence of the pressure to a density of from 0.025 g/cm 3 to 0.4 g/cm 3; and impregnating the molding obtained by the bonding of the pre-formed pieces under the influence of pressure with a heat-storing material in the from of a paraffin acting as a phase-change material.