Patent ID: 7261847

Claim:
A process for a functional regeneration of a porosity of materials used to make moulds for moulding ceramic objects, when pores have been clogged by use of a mould on account of contamination caused by organic substances, by inorganic encrustations and by biological substances, the process comprising the steps of: firstly eliminating contamination by organic substances in the mould and in its pores by: applying an alkaline solution to the mould; flowing said alkaline solution through pores of the mould; these steps being followed by the steps of: applying an acidic solution to the mould; flowing said acidic solution through the pores of the mould for eliminating contamination by inorganic substances in the mould and in its pores; applying a disinfectant solution to the mould; applying an alkaline fluid to the mould, in such a way as to eliminate the contamination caused by inorganic substances in the mould and in its pores; and flowing said disinfectant solution through the pores of the mould for eliminating contamination by biological substances in the mould and in its pores.