| 摘要 |
PURPOSE:To prevent that an indentation, etc. are caused on a colored steel plate in case of working and to elevate the quality by performing a bending after providing in advance non-film coating part on the end edge part of a colored steel plate. CONSTITUTION:The colored steel plate 3 of the side plate of the outer case of an refrigerator, for instance, is made with forming the bending parts 4, 5 of the prescribed shape by a roll forming on its both end parts. In order to form the side plate, a paint 8 is coated by a painting device 7 on the whole upper face of a black plate 6 and the paint 8 of the right and left both end edge parts on the black plate 6 is removed with suction in the width of 3-5mm for instance by a paint removing device 9. A baking is performed thereafter and the steel plate 3 having the coated and non-coated parts 11, 11 of the film 10 ion the black plate 6 is formed. Bending parts 4, 5 are then formed by forming rolls 12, 13 on the end edge part of the steel plate 3. In this case the end face part 3a of the steel plate is bended with pressure welding to one part of the forming rolls but because of the end edge part of the steel plate 3 becoming non-coated part the peel-off of the film 10 is not caused.
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