This disclosure discloses an adhesive tape having a dimension in a thickness direction, comprising a tape base layer, an adhesive layer, and a separation layer. The adhesive layer is disposed on one side of the tape base layer in the thickness direction and includes a predetermined adhesive. The separation layer is disposed on the other side of the tape base layer in the thickness direction and includes a silicon separating agent, an olefin resin separating agent, or an acrylic resin separating agent having a long-chain alkyl group.