| 摘要 |
PURPOSE:A frit, obtained by adjusting Na2O content in enamel frit to a specific value or below, and having improved adhesion and adhesion efficiency. CONSTITUTION:A powder coating frit obtained by adjusting the Na2O content is a frit composition to <=15.5%. The frit is powdered and then electrostatically applied to the base metal surface. Thus, the frit maintains improved adhesion for a long period, and excellent enamel products can be obtained with high adhesion efficiency. If the Na2O content is <6%, the melting property is deteriorated. Therefore, the Na2O content is most preferably 6-15.5%.
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