Adhesive sheet, layered body production method, and layered body

The invention provides an adhesive sheet having a post-curable adhesive layer and having excellent processability when the adhesive layer has been post-cured. The adhesive sheet has an adhesive layer in which an adhesive composition is in a semi-cured state. The adhesive composition comprises a cross-linking acrylic polymer, a cross-linker, a multifunctional monomer having three or more but less than six reactive double bonds within the molecule, a monomer having one or two reactive double bonds within the molecule, and a polymerization initiator. The adhesive layer is post-curable and when post-cured, the adhesive layer satisfies the following group of physical properties: the shear storage modulus G' measured at 23 DEG C and at 1 Hz frequency is 1.0*106 Pa or greater; the shear storage modulus G' measured at 75 DEG C and at 1 Hz frequency is 1.0*105 Pa or greater; and the probe tack value measured at 23 DEG C is 1.5 N/5 mm [Phi] or less.