Cutting machine knife for insertion into a cutting tool of a cutting machine, designed and precisely provided for cutting a sticker in a kiss-cut cutting mode of the cutting machine, in particular in addition to cutting the sticker in a through-cut cutting mode of the cutting machine, wherein the sticker comprises a cover layer and an adhesive layer, wherein the sticker backing comprises an adhesion-reducing layer and a backing layer, wherein the adhesive layer adheres detachably to the adhesion-reducing layer, wherein within the scope of the kiss-cut cutting mode the cutting machine knife is automatically guided by the cutting machine in a cutting direction along the sticker and in this process cuts through the sticker entirely and the sticker backing not at all or only partially, optionally wherein, in the through-cut cutting mode, the cutting machine knife is automatically guided by the cutting machine in a cutting direction along the sticker and in so doing completely cuts through the sticker and the sticker backing entirely, wherein the cutting machine knife comprises: - a holding section for inserting the cutting machine knife into a knife holder of the cutting tool, - a longitudinal axis disposed at a right angle to the cutting direction, - a blade having a cutting edge and a back, wherein the cutting edge, when viewed in a plane defined by the cutting direction and the longitudinal axis, forms with the cutting direction a first angle which is less than 90°, characterized by an intermediate zone located between the cutting edge and the back, which, again when viewed in said plane, forms with the cutting direction a second angle of between 130° and 170°, wherein the intermediate zone forms a wedge-shaped triangular surface which extends from the tip to the back. wherein the sticker comprises a cover layer and an adhesive layer, wherein the sticker backing comprises an adhesion-reducing layer and a backing layer, wherein the adhesive layer adheres detachably to the adhesion-reducing layer, wherein within the scope of the kiss-cut cutting mode the cutting machine knife is automatically guided by the cutting machine in a cutting direction along the sticker and in this process cuts through the sticker entirely and the sticker backing not at all or only partially, optionally wherein, in the through-cut cutting mode, the cutting machine knife is automatically guided by the cutting machine in a cutting direction along the sticker and in so doing completely cuts through the sticker and the sticker backing entirely, wherein the cutting machine knife comprises: - a holding section for inserting the cutting machine knife into a knife holder of the cutting tool, - a longitudinal axis disposed at a right angle to the cutting direction, - a blade having a cutting edge and a back, wherein the cutting edge, when viewed in a plane defined by the cutting direction and the longitudinal axis, forms with the cutting direction a first angle which is less than 90°, - a holding section for inserting the cutting machine knife into a knife holder of the cutting tool, - a longitudinal axis disposed at a right angle to the cutting direction, - a blade having a cutting edge and a back, wherein the cutting edge, when viewed in a plane defined by the cutting direction and the longitudinal axis, forms with the cutting direction a first angle which is less than 90°, characterized by an intermediate zone located between the cutting edge and the back, which, again when viewed in said plane, forms with the cutting direction a second angle of between 130° and 170°, wherein the intermediate zone forms a wedge-shaped triangular surface which extends from the tip to the back.