| 摘要 |
<p>The safety razor blade unit comprises a guard, a cap and a group of three blades with parallel sharpened edges located in between the guard and cap. The first blade (11) defines the edge nearest the guard and has an exposure not greater than zero, while the third blade (13) defining the edge nearest the cap has an exposure not less than zero. The exposure of the first blade has a negative value of -0.04 mm,, and the span between the first blade edge and the guard is in the range of 0.5 mm to 1.5 mm. The span between the edge of the third blade and the edge of the second blade is in the range of 1.0 to 2.0 mm.</p> |
