JPH07148242A - Artificial hair for flocking - Google Patents

Abstract

PURPOSE:To hardly generate an inflammation and to provide extremely high fixability with substantially no bioeraction, i.e., rejection, after flocking by forming the parts of artificial hair in contact with the viable tissues of polyester fibers. CONSTITUTION:At least the parts of the artificial hair for flocking in contact with the viable tissues are formed j>f= of the polyester fibers 1. The artificial hair is composed of core fibers consisting of arbitrary blanks and the outer skins of the polyester fibers 1 covering these core fibers in double layer constitution. The hair root parts 11 of all the constitutions are formed to a size substantially larger than the diameter of hair trunk parts 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to synthetic resin artificial hair used for hair transplantation on the skin where hair needs to be transplanted due to hair loss such as so-called young baldness, and particularly has a long fixing period and hardly causes inflammation. , Stable and highly safe dentures for flocking.

[0002]

2. Description of the Related Art The mainstream of conventional artificial hair for flocking is monofilament made by melting thermoplastic synthetic resin such as polyamide, polyethylene, polyvinyl chloride, etc. as usual and extruding through a nozzle and cooling. Since it is a monofilament, the boundary between the hair shaft and the root is not particularly clear, but it is planted to a depth of about 7 mm that penetrates the epidermis and dermis and reaches the subcutaneous tissue using a needle for transplanting hair. As a result, it is possible to distinguish between the hair shaft and the hair root.

[0003]

In the artificial hair molded from polyvinyl chloride or the like as a raw material as described above, the biological reaction after the treatment, that is, the so-called rejection reaction, is extremely strongly exerted. Foreign bodies that have invaded into the body) are exacerbated, and the retention rate is extremely poor, and the number of artificial hairs on the order of several thousand is within a very short period of time. There are major problems such as the need for repeated flocking.

Further, as described above, the hair root is directly attached to the epidermis, dermis,
Although the hair is implanted in the subcutaneous tissue, comes into contact there, and is embedded therein for a long period of time, a product made of polyvinyl chloride or the like causes an inflammatory reaction on the skin. For example, in the above polyvinyl chloride, hydrochloric acid is considered to be easily liberated and is considered to be highly toxic. Therefore, when dermatitis is caused on the scalp, it not only lowers the fixing rate of the artificial hair, but also causes a serious problem such as an increased risk of other bacterial infections.

Therefore, the object of the present invention is to solve the above problems and to provide artificial hair for flocking, which has a high fixing rate, is less likely to cause inflammation, and is excellent in stability and safety.

[0006]

Prior to solving this problem, the present inventor has found that the artificial hair for transplanting hair is similar in many respects to a so-called artificial blood vessel to be transplanted in a living body. The Ministry of Health and Welfare Notification No. 298 has clarified the criteria for artificial blood vessels. If artificial hair for transplantation that uses materials for artificial blood vessels that fulfills the criteria and boasts a long life of 10 years is used, the irritation to the living body is weak and after treatment. There is little foreign body reaction and it is unlikely that problems such as inflammation will occur. Tetron is suitable for the material of artificial hair for flocking.

The above object can be achieved by constructing at least a portion of the artificial hair for flocking that comes into contact with a living body with a tetron material. According to claim 2 of the present invention,
The artificial hair for flocking is composed of a core fiber of an arbitrary material and an outer skin of a Tetoron material covering the core fiber in a multi-layer structure.
Further, in claim 3 of the present invention, the thickness of the hair root portion is formed to be substantially larger than the diameter of the hair shaft portion.

[0008]

[Operation] With this configuration, the epidermis of the artificial hair for flocking,
Since the part that directly contacts the dermis and subcutaneous tissue is made of tetron, there is almost no biological reaction after the treatment, so-called rejection reaction, and connective fibrous tissue is smoothly formed around the transplanted artificial hair, which is extremely high. Achieves high fixability. Of course, there is almost no effect on the skin such as dermatitis.

According to the second aspect of the present invention, the artificial hair for flocking is composed of the core fibers of an arbitrary material and the outer skin of the Tetron material covering the core hair in a multi-layer structure. Is a tetron, and the core fiber does not come into direct contact with living tissue. When the thickness of the hair root portion is formed to be substantially larger than the diameter of the hair shaft portion as in claim 3, the hair root portion causes a non-return action,
Even when a comb is put in, it is hard to come off and the fixing property is further improved.

[0010]

Next, six kinds of embodiments of the present invention will be described with reference to the drawings, but the present invention is not limited to these embodiments.

1 to 3 show a first embodiment of the present invention. FIG. 1 is a side view of this embodiment, and FIG. 2 is its XX line.
FIG. 3 is a sectional view, and FIG. 3 is an explanatory view showing a state after the treatment. In this embodiment, the whole denture for flocking is tetron fiber 1 which is tetron fiber. This molding method is such that a thermoplastic synthetic resin is melted and extruded from a circular nozzle and cooled. This Tetoron pubic hair 1 penetrates the epidermis 7 and the dermis 8 by the use of a needle for transplantation by a doctor, and the subcutaneous tissue 9
To a depth of about 7 mm. In this case, the portion embedded in the living body may be referred to as a hair root portion 11, and the portion exposed outside the living body may be referred to as a hair shaft portion 10.

As shown in FIG. 3, the Tetoron artificial hair 1 is in direct contact with the epidermis 7, the dermis 8 and the subcutaneous tissue 9. However, since it is a Tetron material, the biological reaction after the treatment, so-called rejection reaction, is small, It shows very high fixability. Another feature is that inflammation is unlikely to occur in the area after the treatment.

Next, FIG. 4 is a sectional view showing a second embodiment of the present invention. As is apparent from FIG. 4, the present embodiment is characterized in that the core fiber 2 made of an acrylic material and the Tetoron coating 12 as the outer skin of the core fiber 2 are laminated.

The core fiber 2 of the acrylic material itself is a material that has less so-called rejection reaction to the living body, and the desired object of the present invention can be achieved by further forming the tetron coating 12 on this. The material of the core fiber 2 may be selected arbitrarily, but the tetron coating 12 is preferably formed also on the site of the cut surface that directly contacts the subcutaneous tissue 9 or the like. Depending on the selection of the material of the core fiber 2, it is possible to adjust the strength of the waist of the artificial hair 1, and the difference in the shrinkage rate between the core fiber 2 and the Tetron coating 12 during the cooling process during manufacturing. Depending on the situation, the artificial hair 1 can be forcibly curled.

Next, FIG. 5 is a sectional view showing a third embodiment of the present invention. The present embodiment is characterized in that the core fiber 20 made of polyamide material and the Tetoron coating 12 that is the outer skin of the core fiber 20 are multilayered.
Is not circular but has a shape like petal of five-valve, and the petal functions as the rib 3.

According to the present embodiment, the ribs 3 are formed on the core fiber 20 to improve the waist strength of the artificial hair 1. By adjusting the shape, number, size, etc. of the ribs 3, the desired waist strength can be obtained. Further, the adhesion strength between the core fiber 20 and the Tetron coating 12 is also increased by the rib 3.

It has been pointed out that straight hairs, which have a straight shape, easily fall off from the scalp and have poor fixability, especially when combing hair during hair styling, which is also the case when washing hair. Real hair has real hair roots, but not artificial hair. If a false hair follicle is formed around the pubic hair after the treatment, straight hair cannot resist the pulling force. Further, although it is said that the binding fiber surrounds the pubic hair after the treatment, the fact is that it is very weak against the force pulled from the outside. The fourth to sixth embodiments described below solve this problem.

FIG. 6 is a side view showing a fourth embodiment of the present invention. In this embodiment, the root portion 11 of the Tetoron artificial hair 1 is flattened to form a flattened portion 4, and the flattened portion 4 is substantially a hair root. Thickness of hair root, that is, flat part 4
Is substantially larger than the diameter of the hair shaft portion 10. The flat striking part 4 can also be formed by heating and pressing.

As a result, a non-return effect is produced in the flat striking portion 4, and even when a comb is put in, it does not easily come off and the fixing property is further improved. Further, since the flat striking portion 4 has a large area on the front and back sides, it has a feature that when the depth of hair transplant is 6,7 mm, the adhesive force with the bonded fiber structure formed later is increased.

Next, FIG. 7 is a side view showing a fifth embodiment of the present invention. In this embodiment, the tip of the Tetoron artificial hair 1 on the hair root 11 side is folded back 180 degrees from the bent portion 50, and a part thereof is bonded to the main body of the Tetron artificial hair 1 at the adhesive portion 51.
The non-return end portion 5 is formed. It is also possible to adopt a heat welding means for the bonding process of the bonding portion 51.

As in the case of the fourth embodiment described above, the thickness of the hair root portion 11 is substantially larger than the diameter of the hair shaft portion 10 due to the formation of the check end portion 5, and the check end portion 5 has a check function. Even when a comb is put in, it does not come off easily, and the fixing degree is particularly large.

Next, FIG. 8 is a side view showing a sixth embodiment of the present invention. The present embodiment is characterized in that the open leg portion 6 is formed by splitting the tip end portion of the Tetoron artificial hair 1 on the hair root portion 11 side into two at a notch portion 60. The position where the open leg portion 6 exists is the hair root portion 11, and the thickness of the hair root portion 11 is substantially larger than the diameter of the hair shaft portion 10.

The existence of the left and right open leg portions 6 causes a non-return effect on the Tetoron artificial hair 1 when a comb is inserted, which makes it difficult to slip out and has a high degree of fixing. Another feature is that the connective fiber structure formed later also enters between the left and right open leg portions 6.

Since the present invention is not limited to the above-mentioned embodiment, for example, the dyeing and coloring of the Tetoron artificial hair 1 is free, and the cross-sectional shape of the Tetron artificial hair 1 may be an ellipse or the like other than a perfect circle, a monofilament, etc. The structure and form of the pubic hair are completely free to choose. The diameter of the standard Tetron pubic hair 1 is around 1.095 mm, but the diameter is not particularly limited. The thickness of each layer when the arbitrary core fiber is constituted by the Tetron coating 12 in a multi-layered manner is also arbitrary. It is also preferable to devise a straight pitch process or the like for imparting tension to the Tetoron artificial hair 1. It is also possible that the entire hair root portion and only a part of the hair shaft portion following the hair root portion are made of tetron material.

[0025]

As described above, according to the present invention, since at least the part that comes into contact with living tissue is made of tetron, the artificial hair for hair transplantation is used. Therefore, the part that comes into direct contact with the epidermis, dermis and subcutaneous tissue Since it is a tetron material, there is almost no biological reaction after treatment, that is, so-called rejection reaction, and inflammation is less likely to occur, so that extremely high fixability and safety are obtained, and the intended purpose can be achieved. It was

[Brief description of drawings]

FIG. 1 is a side view of a first embodiment.

FIG. 2 is a sectional view taken along line XX of the example.

FIG. 3 is an explanatory diagram showing a state after treatment in the same example.

FIG. 4 is a sectional view of a second embodiment.

FIG. 5 is a sectional view of a third embodiment.

FIG. 6 is a side view of the fourth embodiment.

FIG. 7 is a side view of the fifth embodiment.

FIG. 8 is a side view of the sixth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tetron artificial hair 10 Hair shaft part 11 Hair root part 12 Tetron coating 2 Core fiber 20 Core fiber 3 Rib 4 Flat part 5 Non-stop end part 50 Bending part 51 Adhesive part 6 Open leg part 60 Notch part

Claims (3)

[Claims] 1. A denture for hair transplantation, characterized in that at least a site that comes into contact with a living tissue is made of a tetron material. 2. The artificial hair for flocking according to claim 1, wherein the artificial hair is composed of a core fiber of an arbitrary material and an outer skin of a Tetron material covering the core fiber in a multi-layer structure. 3. The artificial hair for hair transplantation according to claim 1, wherein the thickness of the hair root portion is formed to be substantially larger than the diameter of the hair shaft portion.