Abstract: The adhesive tape according to the present invention comprises a tape which comprises a long plastic film having a predetermined width and a predetermined thickness and adhesive layers which are arranged on the tape, wherein at least one row of multiple slits are arranged at regular intervals along the length direction in a region of the tape which turns inward from each end of a first surface as observed in a width direction, each of the slits is formed by a narrow and long concave groove which is depressed to a predetermined depth from the first surface and a crack; which is formed on the bottom of the concave groove and is formed at a predetermined depth toward a second surface, and the adhesive layer is formed on the first surface having the slits formed thereon.

Abstract: The adhesive tape according to the present invention comprises a tape which comprises a long plastic film having a predetermined width and a predetermined thickness and adhesive layers which are arranged on the tape, wherein at least one row of multiple slits are arranged at regular intervals along the length direction in a region of the tape which turns inward from each end of a first surface as observed in a width direction, each of the slits is formed by a narrow and long concave groove which is depressed to a predetermined depth from the first surface and a crack; which is formed on the bottom of the concave groove and is formed at a predetermined depth toward a second surface, and the adhesive layer is formed on the first surface having the slits formed thereon.

Abstract: Disclosed is a gas-permeable film that has increased gas permeability and can be used as a packaging film suitable for a wide range of applications, in particular for packaging a wide variety of articles. Said gas-permeable film 1 has gas-permeable sections provided on a base plastic film of a prescribed thickness. Each gas-permeable section 3L is a recession 3 that is recessed and distended a prescribed amount from one surface of the base plastic film 2 towards the other surface such that the bottom of said recession protrudes outwards from said other surface. Each recession 3 is formed such that the thickness thereof decreases gradually from the top opening towards the aforementioned bottom, with the bottom being the thinnest part.