JPH0696058B2 - Razor - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a razor, and more particularly to a razor or other razor that does not cause rough skin, allergies or the like.

[Prior Art] Men's shaving razors and women's face shaving razors are usually
A blade made of metal such as carbon steel or stainless steel is attached to a plastic or other supporting member.

Conventional metal blades may cause skin disorders due to rough skin or metal allergies after use. Particularly in women, the skin is sensitive and metal allergies may be significant. In addition, the female razor does not require a very sharp one, and an excessively sharp one gives the user a fear of the razor, which makes it difficult to use.

By the way, conventionally, various coating films are formed on the surface of a razor blade. For example, for the purpose of improving the corrosion resistance of the blade, the blade surface is coated with a metal such as Cr or Pt or a ceramic such as Cr ₂ O ₃ . In addition, a Teflon-based resin is coated to improve the sliding on the skin.

[Problems to be Solved by the Invention] However, the coating film of Cr or ceramics improves the corrosion resistance of the blade, but does not improve the rough skin or metal allergy (in the case of Cr), and the coating film of Teflon resin. However, there were cases where the skin became rough.

It is possible to improve the improvement effect by forming these coating films by stacking, but in that case, the coating process increases, the coating process becomes complicated, and the coating film becomes too thick. As a result, the sharpness of the blade may decrease.

An object of the present invention is to solve the above-mentioned conventional problems and to provide a razor having an appropriate sharpness without problems such as rough skin and allergies.

[Means for Solving the Problems] The razor of the present invention is characterized in that a coating film of hydroxyapatite (hereinafter abbreviated as “HAP”) is formed on the surface thereof.

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a sectional view of a cutting edge portion showing an embodiment of the razor of the present invention.

As shown in the drawing, in the blade 1 of the razor of the present invention, a coating film 3 of HAP is formed on the surface of a blade body 2 made of stainless steel, carbon steel or the like.

The HAP coating film 3 may be formed on the entire surface of the blade body 2, or may be formed only on the tip portion that may come into contact with the skin. Alternatively, the tip of the blade main body may be left, and the blade main body may be formed at a portion contacting with other skin. In this case, a sharp blade main body appears at the tip of the blade to have a sharp sharpness, and the other skin-contacting portions are made of the HAP coating film, so that rough skin can be reduced.

In the present invention, if the thickness of the HAP coating film is too thin, a sufficient effect of preventing rough skin cannot be obtained, and conversely, if it is too thick, the sharpness of the blade deteriorates. Normally, the thickness of the HAP coating film is appropriately determined within the range of 10 to 1000Å according to the sharpness required for the razor. For example,
Since a relatively sharp cut is required for a razor for shaving for men, the thickness of the HAP coating film should be as thin as 10 to 300 Å, and the cut sharpness is not reduced and allergic skin etc. Prevent. On the other hand, for women's razors, the thickness of the HAP coating film is 300 to 10
It should be relatively thick, about 00Å, and the sharpness is adjusted to prevent razor loss due to over-cutting the blade, and to eliminate user fear.

The razor of the present invention as described above is provided with an HA
It can be easily manufactured only by forming a P coating film. The method for forming the HAP coating film is not particularly limited, but the method by sputtering using a target made of a HAP sintered body is most advantageous. After forming the HAP coating film by sputtering, the product is subjected to surface treatment such as polishing as necessary.

Incidentally, in the razor of the present invention, only by forming a HAP coating film, to improve the corrosion resistance and slippage with the skin, and further to solve the problems such as rough skin, allergies, but if necessary. It is also possible to form another underlayer under the HAP coating film. However, from the manufacturing process side
It is advantageous to form only the HAP coating film.

Such a razor of the present invention is a shaving razor for men,
It can be applied to all types of razors, such as female face shaving razors, shaving razors, hair styling scissors and pets, and domestic shaving razors.

Furthermore, the razor of the present invention can also be applied to an electric razor, especially on the surface of a perforated plate (net) that comes into contact with the skin.
By forming the HAP coating film, it is possible to effectively prevent rough skin and allergies without lowering sharpness.

[Function] HAP (Ca ₁₀ (PO ₄ ) ₆ (OH) ₂ ) is one of the ceramics with excellent corrosion resistance and mechanical properties, which has a composition and structure very similar to bones and teeth of a living body, and has a biocompatibility. It is a good material.

Therefore, by forming the HAP coating film, not only the corrosion resistance of the shaving tool and the slip with the skin are improved, but also rough skin and allergies can be prevented.

However, since the problem of the conventional metal razor can be solved only by forming the HAP coating film,
The coating film can be made thin. Therefore, the coating process is simplified and the sharpness of the razor is not reduced.

In addition, the sharpness of the razor can be easily adjusted by adjusting the HAP coating film thickness, fear of the razor can be removed, and razor loss can be prevented.

[Examples] The present invention will be described more specifically with reference to Examples and Comparative Examples below.

Examples 1 and 2 and Comparative Examples 1 to 3 A coating film shown in Table 1 was formed on the surface of a razor blade made of stainless steel, and the sharpness and rough skin after use of the coating film were measured by male
50 people and 50 women were examined using monitors, and each was evaluated in the following 3 grades.

The results are shown in Table 1.

Sharpness ○… Very good.

△: Good.

×: Bad.

Rough skin ○ ... Almost all of them have no rough skin.

△: Several people had rough skin.

×: More than half of them had rough skin.

From Table 1, it is clear that the razor of the present invention has good sharpness and has no problem of rough skin.

[Effects of the Invention] As described in detail above, the razor of the present invention is excellent in corrosion resistance and slippery with the skin, and also has no risk of causing skin disorders due to rough skin or allergies. Moreover, it can be easily manufactured, and the coating film does not reduce the sharpness. It is also easy to adjust the sharpness to eliminate fear of the razor and prevent razor loss.

[Brief description of drawings]

FIG. 1 is a sectional view of a cutting edge portion showing an embodiment of the razor of the present invention. 1 ... Blade, 2 ... Blade body, 3 ... HAP coating film.

Claims (1)

[Claims] 1. A razor having a hydroxyapatite coating film formed on the surface thereof.