JP3877533B2 - Hair thickening piece - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hair thickening piece, and more particularly to a hair thickening piece used by directly adhering to a scalp.
[0002]
[Prior art and problems to be solved by the invention]
As a hair thickening technique, a method using a wig, a method of binding artificial hair to the root of the own hair, and the like are generally known. The method of using a wig can cover a large area at one time, but it is easy to peel off and is unnatural because the appearance changes at a stretch, and the initial cost and the maintenance cost are also expensive. The method of binding artificial hair puts a burden on the own hair, which in turn promotes hair loss. Also, since the own hair grows about 1 cm per month, the appearance tends to be unnatural. .
[0003]
On the other hand, for example, JP-A-8-41718 discloses a hair thickening technique in which artificial hair is directly bonded to the scalp via an adhesive. According to Japanese Patent Application Laid-Open No. 8-41718, a combination of a plurality of artificial hairs bound to a linear object is bonded to the scalp via a hair-thickening adhesive. It becomes a ball and is recognized by the touch of the finger, and it feels uncomfortable, and it is easy to remove especially when washing hair and combing hair. In addition, the work of attaching the adhesive while applying the adhesive is troublesome, and it is necessary to wait until the adhesive is dry.
[0004]
An object of the present invention is to provide a hair thickening piece that is less likely to feel uncomfortable when adhered to the scalp, can be attached in a stable state, and enables quick hair thickening work without using an adhesive separately. To do.
[0005]
[Means for Solving the Problems]
The present invention includes a substrate adhesive is coated on the back side, Ri Do and a hair planted on the surface of the substrate, on the adhesive surface of the pressure-sensitive adhesive, fine powder of harder hardness than the adhesive The fine powder is attached so as to cover an area of 1 to 70% of the adhesive surface, and the fine powder is subjected to a pressing force that presses the substrate against the scalp from the state of adhering to the adhesive surface of the adhesive. The above object is achieved by providing a hair thickening piece that sinks into the agent and exposes the adhesive to the adhesive surface . Further, the present invention comprises a substrate coated with an adhesive on the back surface and hair implanted on the surface of the substrate, covering the adhesive surface of the adhesive and passing the adhesive between the fibers. A mesh-like fiber layer having a sufficient gap to adhere is adhered, and the fiber layer sinks into the inside of the adhesive by the pressing force during adhesion, and the adhesive is exposed on the adhesive surface. The above object is achieved by providing a hair thickening piece.
[0006]
The substrate described above has a size of, for example, 0.5 to 25 mm ² , preferably 1 to 16 mm ² , more preferably 1.5 to 9 mm ² , and adopts various shapes such as a circle, a rectangle, and a regular polygon. can do. Moreover, the number of the hair implanted by the board | substrate can be 1-20, for example, Preferably it is 2-10, More preferably, it can be 3-6. The size of the substrate and the number of hairs to be implanted can be appropriately designed in view of the density of hair to be increased.
[0007]
Further, the substrate has a moisture permeability of 200 g / m ² 24 h or more, preferably 500 g / m ² 24 h or more, more preferably 1000 g / m ² 24 h under the conditions of a temperature of 40 ° C. and a humidity of 90% according to the JIS standard Z0208 cup method. The mechanical strength 100% modulus under the temperature of 40 ° C. according to JIS K6301 is preferably 2 to 7 MPa. When the moisture permeability is 200 g / m ² 24 h or more, it is possible to prevent stuffiness or rash that causes rash. Moreover, when the mechanical strength 100% modulus is 2 to 7 MPa, it is difficult to break, and it is difficult to follow the movement of the skin sufficiently.
[0008]
The total thickness of the substrate with the adhesive applied to the back surface is 10 to 200 μm, preferably 40 to 100 μm. When the thickness is 10 to 200 μm, even if the finger is touched with a finger after being adhered to the scalp, it can hardly be sensed, and the feeling of discomfort is released.
[0009]
The pressure-sensitive adhesive in the above description is a substance that exhibits permanent strong adhesiveness (tackiness) in a solvent-free state at room temperature and adheres to an object under pressure of about the finger pressure. Adhesives are substances that exhibit strong adhesiveness and retention without being activated by water, solvent, heat, or chemical reaction, and do not undergo state conversion in the contact process and destruction process. . Furthermore, the pressure-sensitive adhesive is a substance whose adhesive force increases with time until the spread on the adherend surface due to flow deformation of the pressure-sensitive adhesive progresses with time and until equilibrium is reached. Therefore, the pressure-sensitive adhesive constituting the present invention needs to be activated by water, solvent, heat, chemical reaction, etc. at the time of bonding, and is distinguished from an adhesive that changes its state in the contact process and destruction process. It is a substance to be
[0010]
DETAILED DESCRIPTION OF THE INVENTION
A hair thickening piece 10 according to a preferred embodiment of the present invention is a member used to thicken hair by directly adhering to the scalp of a thin portion of hair, and as shown in a conceptual diagram in FIG. The substrate 12 is coated with the adhesive 11, and one or a plurality of hairs 13 are implanted on the surface of the substrate 12.
[0011]
Further, according to the present embodiment, since the microbeads 14 as fine powder are sown on the adhesive surface of the adhesive 11, fingers and other objects are placed before using the hair thickening piece 10. The pressure-sensitive adhesive 11 is protected so as not to contact the pressure-sensitive adhesive 11.
[0012]
The substrate 12 preferably has a circular planar shape with a diameter of about 3 mm and is formed using an unstretched thermoplastic elastomer. As a particularly preferable material, polyurethane or polyester can be used, and it has a thickness of about 5 to 100 μm. The substrate 12 has a moisture permeability of 200 g / m ² 24 h or more (moisture permeability according to JIS standard Z0208 cup method) and a mechanical strength of about 2 to 7 MPa (mechanical strength 100% modulus according to JIS K6301). Moderately flexible, and a plurality of hairs 13 that are stably supported for a certain period of time and have physical properties that do not break even when subjected to a physical load applied to the scalp. Moreover, the moisture permeability does not have an extreme influence on the sweating action from the scalp.
[0013]
The pressure-sensitive adhesive 11 only needs to have a moisture permeability of 200 g / m ² 24 h or more (moisture permeability according to JIS standard Z0208 cup method), and various known pressure-sensitive adhesives can be used. What consists of N-alkyl substituted acrylamide, (meth) acrylate, etc. can be used. The adhesive 11 is applied to the entire back surface of the substrate 12 with a thickness of about 5 to 100 μm. As a result, the substrate 12 with the adhesive 11 applied to the back surface has a total thickness of about 200 μm. Therefore, when the hair thickening piece 10 is adhered to the scalp, even if it is touched with a finger, it is almost sensed. It will not be possible, and you will be freed from discomfort after installation. Here, the adhesive does not exert an extreme influence on the sweating action from the scalp due to the finger pressure and its moisture permeability.
[0014]
The hair 13 to be planted on the surface of the substrate 12 can be either artificial hair or natural hair. However, according to this embodiment, six hairs having a length of about 10 cm, for example, by ultrasonic melting. Artificial hair is planted. In addition, the number and length of the hair 13 to be planted can be appropriately set in view of the density and length of the scalp of natural hair.
[0015]
The microbeads 14 are fine powders having a hardness harder than the pressure-sensitive adhesive 11 having a particle diameter of about μm and made of silica or the like. It adheres to cover an area of ˜70%, preferably 1.5 to 30%, particularly preferably 2 to 5%. If the area covering the adhesive surface of the adhesive 11 with the microbeads 14 is too large, the substrate 12 may not adhere sufficiently to the scalp. If the area covering the adhesive surface is too small, the hair thickening piece 10 is used. Before doing so, fingers and other objects are likely to come into contact with the adhesive 11.
[0016]
When the microbeads 14 are attached to the adhesive surface of the pressure-sensitive adhesive 11 when the hair thickening piece 10 is not used, when the pressure is applied to press the substrate 12 against the scalp when the hair thickening piece 10 is used, the action of this pressing force is applied. As shown in FIG. 2, the substrate 12 sinks into the pressure-sensitive adhesive 11 and exposes the pressure-sensitive adhesive 11 to the pressure-sensitive adhesive surface, thereby sticking the substrate 12 to the scalp via the pressure-sensitive adhesive 11.
[0017]
The operation | work which adheres the piece 10 for thickening of this embodiment to a scalp is performed using the hair transplant unit 15 as shown, for example in FIG. The flocking unit 15 includes a cylindrical portion 16 in which the hair 13 of the hair thickening piece 10 is accommodated, and five protruding capillaries 18 protruding from the distal end lid portion 17 of the cylindrical portion 16 with a length of about 3 mm. Then, the hair 13 is inserted from the front end opening of the protruding tubule 18 toward the cylindrical portion 16, and the surface of the substrate 12 positioned around the hair implantation site of the hair 13 is brought into contact with the opening edge of each protruding tubule 18. Five thickening pieces 10 are attached to the flocking unit 15 with the back surface of the substrate 12 coated with the adhesive 11 facing the front end side.
[0018]
In addition, according to this embodiment, although the area of the front-end | tip cover part 17 of the flocking unit 15 is about 1 cm < ² >, five protruding thin tubes 18 are provided, and each protruding thin tube 18 includes 6 Since each of the hair thickening pieces 10 having the hairs 13 is attached, 5 × 6 = 30 hairs 13 can be planted on the scalp of 1 cm ² by the hair transplantation unit 15. Generally, the number of natural hairs is 100 to 200 with respect to 1 cm ² of the scalp, but an appropriate concealing effect can be obtained by planting at a density of about 30 hairs / cm ² . According to this embodiment, it is possible to increase the hair with naturalness close to natural hair by adhering the hair thickening piece 10 using the flocking unit 15.
[0019]
Further, according to the present embodiment, the temporary fixing pressure-sensitive adhesive having an adhesive force weaker than the pressure-sensitive adhesive 11 is applied to the surface of the substrate 12 of the hair thickening piece 10 around the hair transplantation site of the hair 13. It is worn. When the surface of the substrate 12 is brought into contact with the opening edge portion of each protruding capillary 18, each of the thickening pieces 10 is attached to the unimplanted unit 15 by bonding the substrate 12 with a temporary fixing adhesive. In use, it is temporarily fixed in a stable state so as not to fall out of the protruding thin tube 18. Further, when the hair transplantation unit 15 is used, the substrate 12 adhered to the scalp with the adhesive 11 having a strong adhesive force is peeled off from the opening edge of each protruding capillary 18, and the hair 13 is smoothly pulled out from the cylindrical portion 16 to increase hair. The flocking by the piece 10 can be performed. In addition, it is preferable to use a water-soluble adhesive for temporary fixing. By using the water-soluble temporary tacking adhesive, after the hair thickening piece 10 is bonded to the scalp, the temporary tacking adhesive remaining on the surface side of the substrate 12 is washed away, and the adhesive is soiled. Can be avoided.
[0020]
In order to adhere the hair thickening piece 10 to the scalp using the flocking unit 15, as shown in FIG. 4A , the remaining natural hair 19 is scraped by the protruding tubule 18 while the substrate 12 is temporarily fixed. The tip of the capillary 18 is pressed directly against the scalp. In the operation up to such pressing, the adhesive 11 applied to the back surface of the substrate 12 is covered with the microbeads 14 and therefore does not adhere to the surrounding natural hair 19. If the state where the tip of the protruding thin tube 18 is pressed against the scalp is held for a while, the microbead 14 sinks into the adhesive 11 due to the action of this pressing force, and the adhesive 11 appears on the adhesive surface. The substrate 12 adheres firmly to the scalp. Thereafter, as shown in FIG. 4 (b), when the flocking unit 15 is pulled up, the temporarily fixed state of the substrate 12 is released, and the hair 13 is smoothly extracted from the cylindrical portion 16, and the natural hair 19 is thinned. The hair is quickly increased on the scalp.
[0021]
And according to the hair thickening piece 10 of the present embodiment, a substrate 12 having a desired thickness and mechanical strength with the adhesive 11 applied to the back surface, and a plurality of hairs implanted on the surface of the substrate 12 Therefore, it is less likely to feel uncomfortable when it is adhered to the scalp, and it can be attached in a stable state, and it is possible to perform a hair thickening operation quickly without using an adhesive separately.
[0022]
Moreover, according to the hair thickening piece 10 of this embodiment, since it adheres to the scalp via the adhesive 11, it can adhere | attach without waiting for the said adhesive 11 to solidify, and even if the adhesive force becomes small, it is the board | substrate 12. The finger can be pressed against the scalp again to restore the adhesive strength, and even if the epidermis components of the scalp are replaced, the substrate 12 can be pressed again against the scalp to easily maintain the adhesive state of the hair thickening piece 10. it can.
[0023]
The present invention is not limited to the above-described embodiment, and various modifications can be made. For example, as means for preventing adhesion to the pressure-sensitive adhesive before use of the hair thickening piece, various other means can be employed without being limited to the method of spreading fine powder on the pressure-sensitive adhesive surface. The adhesive layer of the pressure-sensitive adhesive may be covered with a mesh-like fiber layer, and the fiber layer may be submerged in the pressure-sensitive adhesive by a pressing force during adhesion. Here, the mesh-like fiber layer is not necessarily limited to the lattice-like mesh as long as it has a sufficient gap to pass the adhesive between the fibers. Further , the hair thickening piece of the present invention is not limited to thinning hair combs and the like, but can also be used when attaching artificial hair such as fashion hair extensions, false eyelashes and false eyelashes. Note that the scalp includes various skins to be implanted other than the skin of the head, such as the skin of the face.
[0024]
【The invention's effect】
According to the hair thickening piece of the present invention, it is less likely to feel uncomfortable when adhered to the scalp, it can be attached in a stable state, and a hair thickening operation can be performed quickly without using an adhesive separately.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram illustrating a configuration of a hair thickening piece according to an embodiment of the present invention.
FIG. 2 is a conceptual diagram illustrating a state in which a hair thickening piece according to an embodiment of the present invention is attached to the scalp.
FIG. 3 is a perspective view of a flocking unit used when attaching a hair thickening piece to the scalp.
FIGS. 4A and 4B are explanatory views of a state in which a hair thickening piece is attached to the scalp using a hair transplantation unit. FIGS.
[Explanation of symbols]
10 Pieces for thickening 11 Adhesive 12 Substrate 13 Hair 14 Micro beads (fine powder)
15 Hair transplantation unit 16 Cylindrical part 17 Tip lid part 18 Protruding capillary 19 Natural hair

Claims (4)

A substrate on which the adhesive agent is coated on the back side, Ri Do and a hair planted on the surface of the substrate, on the adhesive surface of the pressure-sensitive adhesive, fine powder of harder hardness than the adhesive, the adhesive surface The fine powder is attached to cover the area of 1 to 70%, and the fine powder is applied to the inside of the adhesive by receiving a pressing force pressing the substrate against the scalp from the state of adhering to the adhesive surface of the adhesive. A hair thickening piece that sinks and exposes the adhesive to the adhesive surface . A gap that is composed of a substrate coated with an adhesive on the back surface and hair implanted on the surface of the substrate, sufficient to cover the adhesive surface of the adhesive and allow the adhesive to pass between the fibers. A mesh-like fiber layer having an adhesive is attached, and the fiber layer sinks into the inside of the pressure-sensitive adhesive by a pressing force at the time of adhesion, and the piece for thickening hair that exposes the pressure-sensitive adhesive on the pressure-sensitive adhesive surface . 3. The hair thickening piece according to claim 1, wherein the substrate has a moisture permeability of 200 g / m ² 24 h or more and a mechanical strength 100% modulus of 2 to 7 MPa. The hair thickening piece according to any one of claims 1 to 3, wherein the pressure-sensitive adhesive has a moisture permeability of 200 g / m ² or more.

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