Pumice stone substitute, esp. for cosmetic use - comprising moulded mixt. of granular abrasive and binder

摘要

Moulded articles with an abrasive or scouring action, esp for skin care, comprise granular pumice (or other abrasive) and an inorganic or organic binder. The articles pref. contain 20-80% (esp. 50-60%) pumice with a particle size of =400 (esp. 150-300)mu m (e.g. waste pumice dust). The binder can be gypsum and/or cement or a low-melting plastics powder. Moulding can be effected by mixing the ingredients with water and pressing or casting the mixt., or by dry-pressing at elevated temp. Dyes and/or perfumes can be added before moulding. The surface of the mouldings can be roughened with sand or other abrasives. The prods are less expensive to produce than conventional pumice stones and have greater mechanical strength.