| 摘要 |
<p>PURPOSE:To impart insect-proof effect and to contribute to the improvement of sanitary property of electronic equipment and the improvement of vermin resistance reliability by using resist ink formed by mixing-in vermin repellant. CONSTITUTION:A Cu foil circuit is formed on laminated plates of glass fabric base material and copper lined epoxy resin and a Cu foil printed board by a subtractive method. After blast polishing and drying, printing is performed by using resist ink wherein chlorophenyl based insecticide of Chlorobenzilate is mixed in thermosetting type epoxy ink and using bias lined Tetron screen. The board is dried and hardened in a warm-air far infrared-ray furnace. In addition, an insect-proof applying film wherein vermin repellant is mixed in a paint having excellent insulating property can be formed on the surface of the board after printing of characters.</p> |
