| 摘要 |
A protective sheet is provided that achieves both a high level of performance as a protective sheet (particularly a protective sheet for masking during plating) and an excellent ease of use. The protective sheet includes a substrate and a pressure-sensitive adhesive (PSA) layer which is provided on one side of the substrate. The PSA layer is formed of an acrylic PSA composition which includes a crosslinking agent and a crosslinking accelerator. The sum DS80 of a flexural rigidity DM80 of the protective sheet at 80° C. in the machine direction and a flexural rigidity DT80 of the protective sheet at 80° C. in the transverse direction is from 0.1×10−6 Pa·m3 to 1.2×10−6 Pa·m3. The PSA layer has a storage modulus G′ at 100° C., as measured at a frequency of 1 Hz, of from 0.230×106 Pa to 10×106 Pa.
|
