| 摘要 |
PROBLEM TO BE SOLVED: To improve the external appearance of a rain gutter component made of a metal as a core material. SOLUTION: Synthetic resin layers 5 containing about 3-20 wt.% of wood flour in a polyvinyl chloride resin and having the thickness of about 0.1 mm-0.8 mm are formed on both the upper and lower sides of a metal layer 4 made of a steel sheet having the thickness of about 0.05 mm-1.0 mm to form a sheet body having a laminated structure. This sheet body is molded to form the rain gutter component such as a rain gutter body, a joint, and a body supporter. Since the metal layer 4 is a core material layer, it is excellent in strength and moldability. Since it is covered with the synthetic resin layers 5, rustproofing can be achieved, and the external appearance can be finished into a wooden tone.
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