| abstract |
Provided is an adsorption temporary fixing material having the following features: an adherend can be bonded and temporarily fixed to the material while the inclusion of bubbles is prevented; the material hardly peels from a specified position at both high and low temperatures; the material can be peeled without any adhesive residue when the temporary fixing is released; and even when the material is contaminated, its adsorptivity is restored by water washing, and hence the material can be repeatedly used. The adsorption temporary fixing material of the present invention is an adsorption temporary fixing sheet including a foam layer having an open-cell structure, wherein the adsorption temporary fixing material includes the foam layer in the entirety of the sheet or on at least one surface thereof, wherein a shear adhesive strength of a surface of the foam layer with a SUS304BA plate at 23°C is 1 N/100 mm 2 or more at a tensile rate of 50 mm/min, wherein a peel strength of the surface of the foam layer from the SUS304BA plate at 23°C is 1 N/20 mm or less at a peel angle of 180° and a tensile rate of 300 mm/min, and wherein a weight change ratio after the adsorption temporary fixing sheet has been immersed in distilled water for 1 minute and then water droplets have been wiped off the surface thereof is 50% or less. |