| 摘要 |
<p>A process for forming an insulating film on an electrical sheet, which comprises coating an electrical sheet with a composition composed of an organic component comprising an acrylic resin and/or an acryl-styrene resin and a guanamine resin and an inorganic component mainly comprising a chromate, and drying the coated sheet. This process enables formation of an insulating film having excellent properties and freed from defects of a conventional process of coating with only an inorganic component such as a chromate, forming an organic component film on an inorganic component film, or coating with a mixture of them, such as formation of crator-like pinholes, deterioration of punchability, an increase in cost, reduction in interlaminar resistance, etc.</p> |
