| 摘要 |
PURPOSE:To improve a degree of adhesion as well as to give good film strength, rust preventing effectiveness and conductivity to a cathode-ray tube, by heating each of explosion-proof component parts coated with heat-resistant conductive paint inclusive of an inorganic substance on their surface, and baking the heat-resistant conductive paint. CONSTITUTION:The whole body of an oblong, ringlike band 5 fitted with a lug 6 is coated with heat-resistant conductive paint containing an inorganic substance and conductive matter as a solid portion, and its chemical make-up consists of silicon 10- 15wt%, potassium about 10wt%, calcium about 5wt%, carbon 10-15wt% and others by way of example. The thickness of film coating is about 17mum and its color is black. After applying and drying up them, they are heated at about 400 deg.C with a gas burner and the band is expanded in structure. With this heating process, the adhesive strength of a coating film intensifies. Then, the expanded band is fitly installed in a panel side wall protective tape 8 part, and this panel side wall is constricted tight. When an ohmic value of this coating film is at 17mum in thickness, it is able to obtain that of 20- 40OMEGA/cm or so, and when this film thickness is made to be larger, rust preventing effect is sufficiently secured yet higher. |
