To provide an adhesive film that can be easily released leaving
substantially no adhesive residue and without damaging the adherend
surface when released from an adherend. A base material comprising at
least a first resin film with a breaking elongation in the lengthwise
direction of 300 to 1500% and a breaking strength of at least 2 kg/12 mm,
and a second resin film with a lower breaking elongation and a higher
flexural modulus than the first resin film is used. The second resin film
can break before the first resin film when the base material is
stretched.