Back to results
US 12,759,176 B2Granted
Razor blade and manufacturing method thereof
AssigneeDorco Co., Ltd.
InventorsMin Joo Park, Sung Hoon Oh, Seong Won Jeong
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a razor blade coating by a physical vapor deposition method through performing a deposition with a single composite target composed of dissimilar materials with their area ratio defined to be varied in the single composite target in the direction of transferring the razor blade subject to the deposition, thereby forming a single layer in which the composition ratio of the dissimilar materials gradually changes in the thickness direction of the coating layer to improve the durability of the razor blade coating layer.
Claims11
A razor blade, comprising:
- a blade substrate comprising a blade edge;
- a hard coating layer coated on the blade substrate and comprising at least two regions;
- and
- a polymer coating formed on the hard coating layer,
- wherein:
- the hard coating layer comprises three or more dissimilar materials, including metal and boron;
- and
- the at least two regions comprise at least one of a crystal structure of dissimilar materials or an amorphous structure of dissimilar materials.
5 more elements
Dependencies are inferred from the claim text.