| 摘要 |
PURPOSE:To obtain a glass article having a coating film, in high efficiency, without causing the problems such as environmental pollution, quality degradation of the glass coating film, etc., by spraying glass paint to the just molded hot glass article, and baking the spray-coated glass paint. CONSTITUTION:A glass paint having a thermal expansion coefficient of <alpha+ 1X10<-6>/ deg.C wherein alpha is the thermal expansion coefficient of the raw glass, is prepared beforehand. The glass paint is sprayed to the just molded glass article of 300-700 deg.C and baked. The glass article is cooled slowly to obtain the objective glass article having coating film. Since the process is carried out without using an organic solvent, there is no problems such as the deterioration of the working environment. Furthermore, the problems such as the blackening of the produced glass film and the lowering of the heat resistance, etc. can be prevented because of the absence of a thickener, etc., and the labor for the preparation of paint and the defatting of the raw glass can be saved.
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