| 摘要 |
PROBLEM TO BE SOLVED: To provide a self-openable/closable film in response to temperature, which can be opened or closed in response to temperature and allows an incised piece to be continuously opened or closed.SOLUTION: An incised piece 10 formed with a V-shaped notch 11 includes a lamination structure having an outer layer film 2 to be arranged outside, an inner layer film 3 to be arranged inside with a layer thickness larger than that of the outer layer film 2, and an adhesion layer 4 for bonding the outer layer film 2 and the inner layer film 3. |
