| 摘要 |
A sealing sheet in which a ratio B/A calculated by a procedure comprising step A to step D below satisfies a condition of equaling 0.7 or more and 1 or less: step A of preparing a sample measuring 20 cm longitudinally, 20 cm laterally, and 400 μm in thickness; step B of applying pressure to the prepared sample in a direction perpendicular to the plane thereof until a thickness of 300 μm is achieved; step C of releasing the pressure applied in step B; and step D of calculating the ratio B/A of a thickness A of X after step C and a thickness B of Y after step C, where X is a central portion of the sample and Y is a location 2 cm from one side toward the center portion X, prior to the application of pressure to the sample. |
