| 摘要 |
<P>PROBLEM TO BE SOLVED: To raise efficiency and quality in improving quality of a product sheet by fitting and securing a sound piece into a place of a product sheet where a defective piece has been removed, by a simple technology with high precision in a strong manner. <P>SOLUTION: In a case where a defective piece 2B is present in a product sheet 1, an outer layer part removal portion 17 around a joint part 4 of a scrap part 3 is punched out, and at the same time, a tapered recess 13 is formed at the outer layer part removal portion 17, so that the defective piece 2B containing the joint part 4 is separated and removed from the product sheet 1. Then, a sound piece 2A with the joint part 4 having a tapered protruding part 18 that can engage with the recess 13 on the scrap part 3 side is arranged at a place from which the defective piece has been removed. The protruding part 18 of the sound piece 2A is engaged with the recess 13 on the scrap part 3 side and connected each other, after that, both surfaces and/or a single surface of the connection part is fixed by using a reinforcing film 15. <P>COPYRIGHT: (C)2013,JPO&INPIT |
