抄録
A razor is a cutlery which closely touches the skin in daily life. And the razor cutting performance arises from the shape of blade edge, the surface coating, and the design connection between blades and plastic parts. In general, the cutting performance can be evaluated by measuring the cutting load. But it is not clarified how the causes for razor cutting performance stimulate the human sense. In this study, the relation among the razor components, the cutting performance and the skin condition after shaving was experimentally investigated. As the result of investigation, we found the differences in shaving insufficiency, cross-section surface of beard and cutting load when comparing the razor samples with PTFE and the ones without it. One of the pain causes in shaving is that the beard was pulled, and the loads were different for feeling the pain depending on a part of the face. With the test result of cutting performance, it is found that more painless shaving can be achieved by using the PTFE blades.
