To provide a self-adhesive tape roll which makes it possible to easily peel used self-adhesive tape and to use a self-adhesive face without waste, and also provide its manufacturing method.
A self-adhesive tape 12 is provided with a self-adhesive face 14 on one side of a strip sheet material, and is wound so that the self-adhesive face 14 turns outside. The self-adhesive tape 12 is provided with slitting 16 formed from one end to the other end in an axial direction in every circumference of the roll so that adjacent winding layer positions are in different angle positions along a circumferential direction using a length equal to or greater than the circumference of one wind of the roll as a unit. An angle θ of each slitting 16 formed on each adjacent circumference of the roll is 5-180°, preferably 0-90° around a center axis 18 of the roll.
Shingo Nishide
Koichiro Okura
Miki Sato