Pressure-sensitive adhesive sheet

A pressure-sensitive adhesive sheet comprising

• a pressure-sensitive adhesive layer including:
• an elastomer including 25% or more styrene on a mass basis;
• and a tackifier having a softening point of 100° C. or higher, wherein
• a ratio of a content of the tackifier to a content of the elastomer in the pressure-sensitive adhesive layer is 0.1 to 0.8 on a mass basis,
• the pressure-sensitive adhesive sheet satisfies a requirement that a tensile force FA [N/20 mm] is greater than an adhesive force FB [N/20 mm],
• the tensile force FA is expressed as F1·tA·20/S1, where F1 is a maximum test force measured in a tensile test of a test piece prepared from the pressure-sensitive adhesive sheet, S1 [mm2] is a cross-sectional area of the test piece, and tA [mm] is a thickness of the pressure-sensitive adhesive sheet,
• the pressure-sensitive adhesive sheet has an adhesive force Fc of not less than 1.0 N/20 mm,
• the test piece for the tensile test has a shape of a rectangle having a width of 10 mm and a length of 40 mm in plan view,
• a chuck-to-chuck distance in the tensile test is 10 mm,
• a test speed in the tensile test is 1000 mm/min,
• the adhesive force FB is a 90° peel adhesive force [N/20 mm] measured according to Japanese Industrial Standards (JIS) Z 0237:
• 2022 by adhering a test piece prepared from the pressure-sensitive adhesive sheet to a testing plate, maintaining an environment temperature of the adhered test piece at 100° C. for seven days, and then peeling the test piece from the testing plate, and
• the adhesive force Fc is a 90° peel adhesive force [N/20 mm] measured according to Japanese Industrial Standards (JIS) Z 0237:
• 2022 by adhering a test piece prepared from the pressure-sensitive adhesive sheet to a testing plate and peeling the pressure-sensitive adhesive sheet from the testing plate within one minute after the adhesion.