| 摘要 |
PROBLEM TO BE SOLVED: To prevent interfacial release and voids by a method wherein an adhesive layer is formed on one surface of a metallic sheet, while the adhesive layer is provided with adhesive parts and striped or latticed non-adhesive parts as well as the area of the adhesive parts to the metallic sheet is set up within a specific range. SOLUTION: An adhesive layer 2 made of an adhesive is formed on a metallic sheet 1, while adhesive parts 4a and striped or latticed non-adhesive parts 4b are formed on the adhesive layer 2. At this time, the area of the adhesive parts 4a to the metallic sheet 1 is set up within a range of 20-99%. That is, the area of the adhesive parts 4a to the metallic sheet 1 is set up to be the ratio of the area (the area reducing the area of a bored hole 5 and through-holes 3 from the entire metallic sheet area into a specific shape) with respect to 100%, reducing the the area of the non-adhesive parts 4b from the adhesive layer 2. Through these procedures, the occurrence of interfacial peel off and voids, etc., can be prevented. |
