EP 3 800 016 A1 DETAILED DESCRIPTION OF THE INVENTION [0027] In Table 1, the unit of thickness of the cutting edge is  m m, and the unit of cutting force is gf. [0026] Table 1 shows thethickness ofthe cutting edge andthe cuttingforce according tothedistance fromthe substrate tip for multiple comparative examples and one embodiment of the present disclosure (hereinafter, Example). 55 50 45 40 35 30 25 20 15 10 5 [0014] Hereinafter,some embodiments ofthe presentdisclosurewillbe described in detailwithreference to exemplary drawings. It should be noted that in assigning reference numerals to components in each drawing, the same reference numbers will be used throughout the drawings to refer to the same or like components even though the components are shown in different drawings. In addition, in describing the present disclosure, detailed descriptions of related known elements or functions will be omitted to avoid obscuring the subject matter of the present disclosure. [0015] In describing the components of embodiments according to the present disclosure, terms including ordinal numbers such asfirst,second,i),ii), a),and b)may beused.These terms are merely used todistinguish one component from another, and the essence or order of the components is not limited by the terms. In the specification, when it is stated that a part"includes"or "has" a component,this means that the partmay furtherinclude other components,rather than excluding other components, unless explicitly stated otherwise. [0016] As used herein, DX refers to a point X micrometers from the substrate tip of the shaving blade on the cutting edge. Also, TX refers to the thickness of the cutting edge at point DX. For example, T16 refers to the thickness of the cutting edge at D16 which is 16 micrometers from the substrate tip of the shaving blade. [0017] FIG. 1 shows a schematic profile of a cutting edge 11 of a substrate 10 according to an embodiment of the present disclosure. [0018] Referring to FIG. 1, a shaving blade may include a substrate 10 having a cutting edge 11 provided with a sharp substrate tip 12. [0019] Both sides13 and 14 ofthe cuttingedge 11 mayhave aninclinedshape and may converge toward the substrate tip 12, which is formed at one end of the cutting edge 11. [0020] The substrate 10 may be formed of any one of stainless steel, carbon steel, and ceramic, but the present disclosure is not limited thereto. [0021] Both sides 13 and 14 of the cutting edge 11 may include a plurality of facets formed by an abrading wheel. [0022] The facets may include a first facet spaced apart from the substrate tip 12 and a second facet extending from the substrate tip 12. In this case, the second facet may non-uniformly overlap at least a portion of the first facet. [0023] The first facet may be formed by an abrading wheel made of Cubic Boron Nitride (CBN) having relatively rough and coarse grains. In addition, the second facet may be formed by an abrading wheel having relatively fine and dense grains. However, the present disclosure is not limited to this. [0024] The facet may be uniformly formed on the substrate 10 by 300 to 500 micrometers from the substrate tip 12. [0025] The shaving blade according to an embodiment of the present disclosure may effectively reduce the cutting force of the shaving blade by optimizing the thickness of the cutting edge 11 in a section of D16 or higher which has a high correlation with the cutting force of the shaving blade. Details of a process of obtaining a correlation between the cutting force of the shaving blade and the thickness of the cutting edge 11 will be described in Table 1 and the related description below. 3 TABLE 1 T4 T8 T16 T32 T64 T100 Cutting force ComparativeExample1 2.04 3.55 6.59 11.83 20.89 30.72 5.90 ComparativeExample2 1.69 2.98 5.44 9.76 17.65 27.57 5.63 ComparativeExample3 1.96 3.49 5.91 10.67 19.38 28.82 5.55 ComparativeExample4 1.67 2.99 5.44 10.07 18.1 27.21 5.42 ComparativeExample5 1.65 2.99 5.32 9.41 16.32 27.21 5.42 ComparativeExample6 1.83 3 4.93 7.79 14.66 22.21 5.22 ComparativeExample7 1.69 2.69 4.45 7.54 12.94 19.88 4.90 ComparativeExample8 1.72 2.77 4.36 5.91 7.96 11.13 4.85 ComparativeExample9 1.53 2.47 3.86 6.11 10.45 16.53 4.63 Example 1.49 2.08 3.42 5.91 9.84 16.2 4.30