The invention provides an
adhesive tape which is excellent in light weight, good in base material strength and
adhesive force, and excellent in base material state. According to the present invention, provided is an
adhesive tape provided with a base material comprising a resin composition containing a
thermoplastic resin and an adhesive layer provided on at least one surface of the base material, the base material having a TD
shrinkage rate of-5.0 to 0% under conditions of heating at 110 DEG C for 5 minutes, and the base material having an MD
shrinkage rate of 0 to 15% under conditions of heating at 110 DEG C for 5 minutes, the TD
shrinkage rate being-5.0 to 0% under conditions of heating at 110 DEG C for 5 minutes, and the MD shrinkage rate being-5.0 to 0% under conditions of heating at 110 DEG C for 5 minutes. The thickness of the base material is 25-65 [mu] m, the thickness of the adhesive layer is 0.5-12.0 [mu] m, the
melt viscosity of the base material at 175 DEG C at a
shear speed of 250 sec <-1 > is 300-1,300 Pa.s, and the melt tension of the base material at 175 DEG C at a traction speed of 1.0 m / min is 0.01-0.10 N.