To provide a pressure-sensitive adhesive tape whose strippable paper can easily be peeled from an adhesive layer.

In a sealing pressure-sensitive adhesive tape obtained by forming adhesion layers 4 and 5 on one side of a sheet and allowing strippable papers 6 and 8 to stick thereon, non-adhesion portions 3 and 3 are formed between the upper adhesion layer 4 and the lower adhesion layer 5 on the sheet 2 and the upper strippable paper 6 and the lower strippable paper 8 which stick to the adhesion layers 4 and 5, respectively are provided with covering portions 7 and 9, respectively, in superposed relation with the non-adhesion portions 3 and 3.