Abstract: An adhesive tape, interposed between a lens to be processed and a holding jig when the lens is mounted in a lens processing machine, which has a plastic foam with holes opening in an adhering surface and an adhesive layer formed on the adhering surface of the plastic foam, and having a suction function for providing suction to the adhering surface together with elastic restoration after the plastic foam is deformed under compression. The adhesive tape of the present invention also exhibits sufficient shear adhesive strength in relation to a lens that has received surface processing and can realize precise lens processing.

Abstract: A superstrong adhesive tape that in a strongly viscous structure simultaneously having an adhesive function and an adsorptive function, realizes an enhanced bonding strength. There is provided a super-strong adhesive tape comprising plastic foam material (2) having holes (20) opening on its adhesion-object side; and adhesive agent layer (3) fitted on the adhesion-object side of the plastic foam material (2) so as to form depressed portions (30) at positions corresponding to the holes (20). The depressed portions (30) are deformed into a nearly planar configuration in conformity with any compressive deformation of the plastic foam material (2), and exert an adsorptive function in accordance with the elastic recovery of the plastic foam material (2).