Utility knife, also known as carving knife or wallpaper knife, is mainly used to cut and trim soft things. It is generally composed of a handle and a blade, and is a pull-out structure. The blade is generally beveled. If it is blunt, it can be broken along the line of the blade body, and a new blade will appear, which is convenient to use.
The material of the utility knife blade is generally carbon tool steel (SK5 or SK2). The width of the blade is generally 9mm, 18mm, and 25mm, of which 18mm is the most common. The lengths corresponding to the three widths are 80mm, 100mm, and 125mm.
A 9mm wide and 80mm long blade generally has 13 sections, which means that the blade can be broken 13 times
A 18mm wide and 100mm long blade generally has 8 sections, which means that the blade can be broken 8 times
A 25mm wide and 125mm long blade generally has 7 sections, which means that the blade can be broken 7 times
The handle of a utility knife is generally made of single-color ABS material, double-color ABS+TPR material, and metal handle zinc alloy material.
A utility knife can come with a blade. Now, in order to improve the efficiency of use and avoid the trouble of repeated blade replacement, the design structure of the utility knife is also diversified, and it can be designed to automatically load the blade. Now some knife handles can store multiple blades, up to 10 blades.