METHOD FOR THE APPLICATION OF A POLYTETRAFLUOROETHYLENE COATING TO GLASS

摘要

Method for the application of a polytetrafluorethylene (PTFE) coating to glass i.e. to both flat glass and glass objects such as dishes and the like; said method is characterized in that (a) the glass is subjected to a blasting treatment with an abrasive containing SiO2 preferably quartz glass; (b) the blasted surface of the glass is treated with an etchant like HF; (c) the treated surface of the glass is exposed to the action of a grease-/oil-removing agent such as HNO3 or H2SO4; (d) the glass with the oil-/grease-free surface is dried with an organic drying agent like methanol and acetone; (e) the glass is then freed from the drying agent in a dry, clean atmosphere; and (f) PTFE is applied to the treated surface of the glass.