JP2022035623A - Artificial hair, artificial hair bundle set, manufacturing method of artificial hair, and hair increasing method - Google Patents

Abstract

To provide artificial hair with smaller and less noticeable knots, which is hardly unknotted, and to provide an artificial hair bundle set, a manufacturing method of the artificial hair, and a hair increasing method.SOLUTION: Hair increasing artificial hair 1 tied to single wearer's hair growing from a human head includes: a first area 11 which is formed of artificial single fiber and includes one end of the single fiber; a second area 12 including the other end of the single fiber; and a third area 13 positioned between the first and second areas 11 and 12. Polishing parts 13A with 0.5 mm to 5.0 mm width, whose cross sectional areas are reduced by partially polishing a surface of the single fiber, are formed in the third area 13 at intervals, and the polishing parts 13A and/or prescribed knots formed in the wearer's hair fit within width of the polishing parts 13A.SELECTED DRAWING: Figure 1

Description

The present invention relates to artificial hair, an artificial hair bundle set, an artificial hair manufacturing method, and a hair thickening method, in which the knot is small and inconspicuous and the knot is difficult to unravel.

Hair growth and wigs are known as general measures for thinning hair. Hair thickening is a procedure for binding artificial hair or human hair to the natural hair that grows from the head. For example, as disclosed in FIG. 4 of Japanese Patent Application Laid-Open No. 2015-001035, the hair is bound to the root of one hair in a V shape to increase the amount of hair to three.

Conventional artificial hair and human hair have a problem that the knot when tied to their own hair is large and conspicuous. In particular, the more complicated the knot is to make it harder to untie, the larger and more noticeable the knot will be.

Further, in hair growth, artificial hair or the like is bound to the root of the own hair, but the knot of the artificial hair or the like moves upward from the root as the own hair grows. Generally, it is said that human hair grows about 1 cm in one month. Therefore, the knot of artificial hair or the like bound to the root of the own hair moves up from the root of the own hair by about 1 cm in one month. Knots such as artificial hair that have moved upward from the root of their own hair not only look strange, but also tend to get caught in the teeth of combs and brushes.

Therefore, the applicant proposed in Japanese Patent Application No. 2019-031406 artificial hair in which the knot becomes small and inconspicuous. This artificial hair is composed of artificial single fibers, and has a first region including one end of the single fibers, a second region including the other end of the single fibers, and a third region located between the first and second regions. The cross-sectional area of the single fiber in the third region is smaller than the cross-sectional area of the single fiber in the first and second regions. By reducing the cross-sectional area of the third region where the knot is formed, the knot becomes smaller and less noticeable.

Japanese Unexamined Patent Publication No. 2015-001035

The artificial hair of Japanese Patent Application No. 2019-031406 is configured to reduce the cross-sectional area of the single fiber over the entire length of the third region. In this configuration, the preferred length of the third region is in the range of 20 mm to 50 mm. On the other hand, there are various ways to tie artificial hair, such as a knot and a cow hitch, but the length of the third region used to form the knot is generally in the range of 0.5 mm to 5.0 mm. Within. However, it is not realistic to identify a very small third region of 0.5 mm to 5.0 mm with the naked eye and tie a knot exactly at this location. Therefore, the length of the third region is set to 20 mm to 50 mm so that a knot is formed in the third region without accurately specifying the third region.

After that, the present inventor proceeded with further improvement of the artificial hair of Japanese Patent Application No. 2019-031406. As a result, if the cross-sectional area of the length required to form the knot is reduced among the single fibers constituting the artificial hair, the boundary between the small cross-sectional area and the large cross-sectional area is located at two places near the knot. However, I found that the knot was difficult to untie. That is, the boundary between the portion having a small cross-sectional area and the portion having a large cross-sectional area comes into contact with the two points of the knot, which makes it difficult to untie the knot. It was also found that when the cross-sectional area is reduced by polishing the surface of the single fiber, the surface of the polished portion becomes rough and the knot becomes more difficult to unravel. Further, even if it is an extremely minute polished portion of 0.5 mm to 5.0 mm, by forming a plurality of polished portions over the entire length of the third region, it is not necessary to accurately specify one polished portion. It becomes possible to easily form a knot on the polished portion.

The present invention has been made in view of the above problems, and provides an artificial hair, an artificial hair bundle set, an artificial hair manufacturing method, and a hair thickening method, in which the knot is small and inconspicuous and the knot is difficult to unravel. The purpose.

(1) In order to achieve the above object, the artificial hair of the present invention is an artificial hair for thickening that is bound to one natural hair growing from a human head, and is made of an artificial single fiber. The third region includes a first region including one end of the single fiber, a second region including the other end of the single fiber, and a third region located between the first and second regions. A polished portion having a width of 0.5 mm to 5.0 mm having a reduced cross-sectional area is formed by partially polishing the surface of the single fiber, and is formed on the polished portion and / or the own hair. The knot is characterized by having a width that fits within the width of the polished portion.

(2) Preferably, in the artificial hair of the above (1), a plurality of the polished portions are formed at intervals in the third region.

(3) Preferably, in the artificial hair of (1) or (2), the minor axis of the polished portion in the third region is 5% to 50% smaller than the diameter of the single fiber.

(4) Preferably, in any of the artificial hairs (1) to (3) above, the ten-point average roughness Rzjis of each of the polished portions is set within the range of 0.35 μm to 0.60 μm.

(5) In order to achieve the above object, the artificial hair bundle set of the present invention is an artificial hair bundle set in which a plurality of bundles of artificial hair according to any one of (1) to (4) above are held in an aligned state. The bundle of the artificial hair is composed of two or more artificial hairs aligned along the longitudinal direction of the single fiber, and the plurality of artificial hairs are the first region of each other. The second regions are individually bundled, and the third regions can be knotted by pulling the bundles of the first region and the bundles of the second region in opposite directions. It is characterized in that the third region is adhered to a pressure-sensitive adhesive extending in one direction to form one ring of clothes, and a plurality of bundles of the artificial hair are held in an aligned state along the pressure-sensitive adhesive. ..

(6) In order to achieve the above object, the method for producing artificial hair of the present invention is the method for producing artificial hair according to the above (2), wherein a plurality of the single fibers are abbreviated at intervals. In the step of arranging in parallel and fixing one end side and the other end side of each single fiber, and in the third region of each single fiber, the width corresponding to the distance between the polishing portions is set in the direction orthogonal to each single fiber. The unmasked portion of each single fiber is formed by a step of applying a plurality of masking tapes having a plurality of masking tapes substantially in parallel at intervals corresponding to the width of the polished portion and by polishing the third region of each single fiber. It is characterized by including a step of reducing the cross-sectional area of the above.

(7) Preferably, in the method for producing artificial hair according to (6) above, in the third region of each single fiber, one side of the outer peripheral surface of the unmasked portion is polished to obtain a cross-sectional area. Make it smaller.

(8) Preferably, in the method for producing artificial hair according to (6) above, in the third region of each single fiber, one side and the other side of the outer peripheral surface of the unmasked portion are polished. Reduce the cross-sectional area.

(9) Preferably, in the method for producing artificial hair according to any one of (6) to (8) above, masking in the third region of each single fiber is performed by injecting a liquid mixed with particles as an abrasive. Polish the unfinished parts.

(10) In order to achieve the above object, the hair thickening method of the present invention is a hair thickening method using artificial hair according to any one of (1) to (4) above, and can be used by a human with a predetermined knot. When one or more of the artificial hairs are bound to one hair growing from the head, a predetermined knot is formed on any one of the polished parts and / or the hair. The knot fits within the width of the polished portion, and the boundary between the polished portion and the unpolished portion of the single fiber is located at two locations in the vicinity of the knot.

In the artificial hair, the artificial hair bundle set, the method for producing the artificial hair, and the method for increasing the hair of the present invention, the knot is formed in the polished portion having a small cross-sectional area among the single fibers constituting the artificial hair, so that the knot becomes smaller. Inconspicuous. Further, the knot fits in the polished portion, and the boundary between the portion having a small cross-sectional area and the portion having a large cross-sectional area comes into contact with two places in the vicinity of the knot. This makes it difficult to untie the knot. Further, the surface of the polished portion forming the knot is rough, and the knot becomes more difficult to unravel. In addition to this, a plurality of polished portions are formed over the entire length of the third region. This makes it possible to easily tie a knot in any of the polished parts without having to pinpoint one polished part.

FIG. 1A is an external view showing artificial hair according to an embodiment of the present invention. FIG. 1 (b) is an enlarged view of a third region of the artificial hair of FIG. 1 (a). 1 (c) is an enlarged view and a cross-sectional view of a part A of the artificial hair of FIG. 1 (a). FIG. 1 (d) is an enlarged view and a cross-sectional view of a portion B showing a first embodiment of the third region of FIG. 1 (b). FIG. 1 (e) is an enlarged view and a cross-sectional view of a portion C showing a first embodiment of the third region of FIG. 1 (b). FIG. 1 (f) is an enlarged view and a cross-sectional view of a portion B showing a second embodiment of the third region of FIG. 1 (b). FIG. 1 (g) is an enlarged view and a cross-sectional view of a portion C showing a second embodiment of the third region of FIG. 1 (b). FIG. 2 is an enlarged photograph showing a portion B of the third region of FIG. 1 (d). FIG. 3A is an enlarged view showing a knot formed in the third region of the artificial hair. FIG. 3B is an enlarged view showing a state in which the third region of the artificial hair is connected to the own hair. FIG. 4A is a plan view showing a processing substrate used in the method for producing artificial hair according to the embodiment of the present invention. FIG. 4B is an exploded side view of the processing substrate of FIG. 4A. 5 (a) to 5 (c) are perspective views showing each step of the method for producing artificial hair according to the first embodiment. 6 (a) to 6 (d) are perspective views showing each step of the method for producing artificial hair according to the second embodiment. FIG. 7 is an external view showing an artificial hair bundle according to an embodiment of the present invention. FIG. 8A is an external view showing one artificial hair bundle set according to the embodiment of the present invention. FIG. 8B is an external view showing four artificial hair bundle sets.

<Artificial hair>
First, the configuration of the artificial hair according to the embodiment of the present invention will be described with reference to FIGS. 1 (a) to 1 (b).

In FIG. 1A, the artificial hair 1 of the present embodiment is made of an artificial single fiber. As the single fiber constituting the artificial hair 1, for example, polyester, nylon, acrylic or vinyl chloride synthetic fiber is used. As the thickness of the single fiber constituting the artificial hair 1, for example, those having a thickness of more than 0.05 mm to 0.15 mm or less are used. Further, as an index of the strength of the single fiber constituting the artificial hair 1, for example, the tensile strength when the single fiber is in a linear state is about 0.80 N or more, and the tensile strength when the single fiber is attached to the wig base is about 0.60 N. The above is preferable.

The artificial hair 1 of the present embodiment is characterized in that the central portion of a single fiber having a substantially constant diameter is processed so that the cross-sectional area is smaller than that of the other unprocessed portions. Therefore, as shown in FIG. 1A, the entire artificial hair 1 can be distinguished into unprocessed first and second regions 11 and 12 and processed third region (central portion) 13. ..

The first region 11 of the artificial hair 1 is located on the left side of FIG. 1 (a) and includes one end of a single fiber. The second region 12 is located on the right side of FIG. 1 (a) and includes the other end of the single fiber. The third region 13 is located between the first and second regions 11 and 12, and is continuous with both the first and second regions 11 and 12.

As shown in FIG. 1 (b), the third region 13 has a configuration in which the processed single fiber portion (13A) and the unprocessed single fiber portion (13B) are alternately continuous. The processed single fiber portion (13A) has a smaller cross-sectional area than the unprocessed single fiber portion (13B). In this embodiment, the cross-sectional area is reduced by polishing the surface of the single fiber. Therefore, in the third region 13, the processed single fiber portion is referred to as a polishing portion 13A, and the unprocessed single fiber portion is referred to as an unprocessed portion 13B.

The part A surrounded by the chain line circle in FIG. 1 (a) shows the portion of the raw single fiber of the first and second regions 11 and 12. The portion B surrounded by the chain line circle in FIG. 1B indicates a portion where the unprocessed portion 13B and the polished portion 13A of the third region 13 are continuous. Part C shows only the polishing part 13A of the third region 13.

Here, there are two methods for processing the single fiber of the third region 13. First, only one side of the outer peripheral surface of the single fiber of the third region 13 is polished to reduce the cross-sectional area. Second, one side and the other side of the outer peripheral surface of the single fiber of the third region 13 are polished to reduce the cross-sectional area. The cross-sectional shape of the single fiber in the third region 13 differs depending on whether the first or second processing method is adopted.

FIG. 1 (c) is an enlarged view and a cross-sectional view showing a part A of the artificial hair 1. As shown in FIG. 1 (c), the raw single fibers of the first and second regions 11 and 12 have a substantially constant diameter D1. As described above, the diameter D1 of the raw single fiber is, for example, more than 0.05 mm to 0.15 mm or less.

1 (d) and 1 (e) show an enlarged view and a cross-sectional view of the B portion and the C portion of the third region 13 when the polishing portion 13A is formed by the above-mentioned first processing method.

As shown in FIG. 1 (d), in the portion B of the third region 13, the cross-sectional area of only one side of the outer peripheral surface of the single fiber gradually decreases from the unprocessed portion 13B to the polished portion 13A. Then, as shown in FIG. 1 (e), in the C portion of the third region 13, that is, in the polishing portion 13A, the cross-sectional shape of the single fiber is not substantially circular, and the minor axis D2 is a constant substantially semicircular shape. Become.

On the other hand, FIGS. 1 (f) and 1 (g) show enlarged views and cross-sectional views of portions B and C of the third region 13 when the polished portion 13A is formed by the above-mentioned second processing method.

As shown in FIG. 1 (f), in the portion B of the third region 13, the cross-sectional area of one side and the other side of the outer peripheral surface of the single fiber gradually decreases from the raw portion 13B to the polished portion 13A. .. Then, as shown in FIG. 1 (g), in the C portion of the third region 13, that is, in the polishing portion 13A, the cross-sectional shape of the single fiber is not substantially circular, and the minor axis D3 is a constant substantially oval. Become.

In FIGS. 1 (d) to 1 (g), the short diameters D2 and D3 of the single fiber in the polished portion 13A of the third region 13 are 5% to 50% smaller than the diameter D1 of the single fiber in the unprocessed portion 13B. preferable. Further, the artificial hair 1 having a plurality of polishing portions 13A formed in the third region 13 has a tensile strength of about 0.80 N or more in a straight state and a tensile strength of about 0.60 N or more in a state of being planted on a wig base. Is preferable.

FIG. 2 is an enlarged photograph showing a portion B of the third region 13 of FIG. 1 (d). By the wet blasting process described later, only one side of the outer peripheral surface of the single fiber was polished to form the polished portion 13A. Reference numeral B1 in FIG. 2 indicates a boundary between the unprocessed portion 13B and the polished portion 13A. The surface of the polished portion 13A is a rough surface that is not slippery. Preferably, the surface roughness of the polished portion 13A is in the range of 0.35 μm to 0.60 μm in the ten-point average roughness Rzjis of JIS B 0601-1994.

FIG. 3A shows a knot 13C formed in one polishing portion 13A. Further, FIG. 3B shows a state in which one polishing portion 13A is tied to the own hair. The width of one polishing portion 13A is determined by assuming a predetermined knotting method such as a cow hitch or a cow hitch. As a result, the knot 13C when the knot is tied in a predetermined manner is made to fit within the width of the polishing portion 13A. Preferably, the width of one polishing portion 13A is in the range of 0.5 mm to 5.0 mm.

By setting the width of one polishing portion 13A within the range of 0.5 mm to 5.0 mm, the knot when connecting 1 to 5 artificial hairs 1 to one own hair fits within the width of the polishing portion 13A. It will be like. In this case, the diameter of 1 to 5 artificial hairs 1 is in the range of 0.07 mm to 0.10 mm. For example, when one artificial hair having a diameter of 0.07 mm is tied to one own hair, the knot fits within the width of the polished portion 13A of 0.5 mm. Further, the knot when five artificial hairs having a diameter of 0.10 mm are tied together to one own hair fits within the width of the polished portion 13A of 5.0 mm.

As shown in FIG. 3B, assuming that the width of one polished portion 13A is the length required to form a predetermined knot 13C, the polished portion 13A and the unprocessed portion 13B are located at two locations near the knot 13C. The boundaries B1 and B2 are located, and the knot 13C becomes difficult to untie. That is, the boundaries B1 and B2 between the portion having a small cross-sectional area and the portion having a large cross-sectional area come into contact with the two points of the knot, so that the knot 13C becomes difficult to unravel. Further, the knot 13C becomes more difficult to unravel due to the rough surface of the polished portion 13A. The knot is not limited to the case where it is formed on the polishing portion 13A. In addition to this, there are cases where a knot is formed on the hair 4 and cases where both the polishing portion 13A and the hair 4 form a knot. In either case, the knot fits within the width of the polished portion 13A, making it difficult to untie.

<Manufacturing method of artificial hair>
Next, the method for producing artificial hair according to the embodiment of the present invention will be described with reference to FIGS. 4 to 6.

The polishing method for reducing the cross-sectional area of the single fiber in the third region 13 of the artificial hair 1 is not particularly limited. For example, it is possible to partially reduce the cross-sectional area of the single fiber in the third region 13 of the artificial hair 1 by manual or mechanical physical polishing. As a result of diligent studies by the present inventor, it has been found that dry or wet blasting is suitable, and in particular, wet blasting (wet blasting) is optimal.

4 (a) and 4 (b) show the processing substrate 100 used for partially blasting the single fiber in the third region 13 of the artificial hair 1. By wet blasting using the processing substrate 100, the cross-sectional area of the single fiber in the third region 13 can be partially and accurately reduced, and artificial hair 1 of a certain quality can be efficiently mass-produced. Become.

As shown in FIGS. 4A and 4B, the processing substrate 100 has an area in which a large number of single fibers, which are raw materials for the artificial hair 1, can be arranged side by side in parallel. In the center of the processing substrate 100, a rectangular opening 101 corresponding to the third region 13 of the artificial hair 1 is provided. Double-sided tape 111 is attached to one end side and the other end side of the processing substrate 100 around the opening 101, respectively. One end side and the other end side of the single fiber which is the raw material of the artificial hair 1 are fixed to each double-sided tape 111. Specifically, one end side and the other end side of the single fiber are held between the upper and lower double-sided tapes 111. Further, a cover plate 112 is attached to the surface of the upper double-sided tape 111. The cover plate 112 presses one end side and the other end side of the single fiber to maintain a stable fixed state, and covers the surface of the upper double-sided tape 111 to facilitate the handling of the processing substrate 100.

For example, 150 to 200 single fibers are arranged on the processing substrate 100. As a specific example of the dimensions, the length L1 of the single fibers is about 600 mm to 700 mm, and the distance L2 between the adjacent single fibers is about 0.5 mm. The length L3 of the opening 101 in the lateral direction is about 20 mm to 50 mm, and the range of this length L3 is the third region 13 of the artificial hair 1. The length L4 of the double-sided tape 111 and the cover plate 112 in the lateral direction is about 15 mm.

After arranging 150 to 200 single fibers on the processing substrate 100, a plurality of masking tapes 20 are attached to the portions corresponding to the openings 101 of the single fibers. One masking tape 20 has, for example, a width of 0.5 mm in the lateral direction. All masking tapes 20 are attached substantially parallel to each single fiber at a distance of 0.5 mm from each other in the direction orthogonal to each single fiber. Of all the masking tapes 20, the central portion is attached to each single fiber, and both end portions are attached to the plate surface of the processing substrate 100. By arranging the masking tape 20 in this way, a plurality of polished portions 13A having a width of 0.5 mm and a plurality of unprocessed portions 13B having a width of 0.5 mm are alternately and continuously formed in the third region 13 of the artificial hair 1. Will be done.

When a plurality of polishing portions 13A are formed on only one side of the outer peripheral surface of the single fiber, a plurality of masking tapes 20 are attached to one side of the processing substrate 100. On the other hand, when forming a plurality of polishing portions 13A on one side and the other side of the outer peripheral surface of the single fiber, a plurality of masking tapes 20 are attached to both sides of the processing substrate 100.

Next, the wet blasting of the artificial hair 1 using the above-mentioned processing substrate 100 will be described with reference to FIGS. 5 and 6. 5 (a) to 5 (c) show each step in the case of wet blasting only one side of the outer peripheral surface of the single fiber of the third region 13. On the other hand, FIGS. 6A to 6D show each step in the case of wet blasting one side and the other side of the outer peripheral surface of the single fiber of the third region 13.

First, as shown in FIG. 5A, 150 to 200 single fibers, which are raw materials for the artificial hair 1, are arranged on the processing substrate 100. For example, in the present embodiment, 200 single fibers are processed into artificial hair 1. The placement of the 200 single fibers on the processing substrate 100 was performed manually, and it took about 60 minutes.

Next, as shown in FIG. 5B, the processing substrate 100 is placed on the processing table of the wet blasting apparatus, and the opening 101 of the processing substrate 100 is aligned with the blast gun 200. Then, a mixed solution of water and an abrasive is sprayed from the blast gun 200 by compressed air, and the portion corresponding to the opening 101 of the 200 single fibers is wet-polished. As a result, the cross-sectional area of one side of the outer peripheral surface of the single fiber in the third region 13 is reduced (see FIGS. 1 (d) and 1 (e)). One wet blast shown in FIG. 5B took about 2 minutes and 30 seconds.

After that, the processing substrate 100 is taken out from the wet blasting apparatus, and the masking tape 20 is removed from one side of the processing substrate 100. Finally, the 200 single fibers are washed with water of the shower head 300 and dried while being arranged on the processing substrate 100. This completes 200 artificial hairs 1 in which the cross-sectional area of only one side of the outer peripheral surface of the single fiber in the third region 13 is partially reduced. It took about 2 minutes for washing and drying shown in FIG. 5 (c).

On the other hand, in the case of producing artificial hair 1 in which the cross-sectional areas of one side and the other side of the outer peripheral surface of the single fiber in the third region 13 are reduced, as shown in FIGS. 6 (b) and 6 (c), Perform wet blasting twice. As shown in FIG. 6B, the first wet blast is performed from the surface side of the processing substrate 100. After that, the processing substrate 100 is inverted, and the second wet blast is performed from the back surface side of the processing substrate 100. As a result, the cross-sectional areas of one side and the other side of the outer peripheral surface of the single fiber in the third region 13 are partially reduced (see FIGS. 1 (f) and 1 (g)).

After that, the processing substrate 100 is taken out from the wet blasting apparatus, and the masking tape 20 is removed from both sides of the processing substrate 100. Finally, the 200 single fibers are washed with water of the shower head 300 and dried while being arranged on the processing substrate 100. This completes 200 artificial hairs 1 in which the cross-sectional areas of one side and the other side of the outer peripheral surface of the single fiber in the third region 13 are partially reduced.

<Artificial hair bundle set>
The artificial hair 1 produced through the steps of FIGS. 5 (a) to 5 (c) or 6 (a) to 6 (d) described above is processed into an artificial hair bundle 2 as shown in FIG. 7. The artificial hair bundle 2 has a structure suitable for performing the hair thickening method, that is, for binding the artificial hair 1 of the present embodiment to the self-hair 4 growing from the head.

In FIG. 7, the artificial hair bundle 2 is composed of two or more artificial hairs 1 aligned along the longitudinal direction of a single fiber. For example, in the present embodiment, one artificial hair bundle 2 is composed of four artificial hairs 1. The first region 11 and the second region 12 of each of the four artificial hairs 1 are individually bundled by the masking tapes 21 and 22, respectively. Further, the third regions 13 of each of the four artificial hairs 1 form one ring 13a. The ring 13a of the third region 13 is in an untied state in which the knot 13C can be formed by pulling the bundle of the first region 11 and the bundle of the second region 12 in opposite directions.

The plurality of artificial hair bundles 2 constitute the artificial hair bundle set 3 shown in FIG. 8 (a). For example, one artificial hair bundle set 3 of the present embodiment includes 20 artificial hair bundles 2. As shown in FIG. 8A, in the 20 bundles of artificial hair bundles 2, the portion of the third region 13 is adhered to the adhesive tape 31 extending in one direction, and 5 bundles are each 4 along the longitudinal direction of the adhesive tape 31. It is kept aligned with the group. The adhesive of the adhesive tape 31 adheres the artificial hair bundle 2 so as to be peelable. A part of the ring 13a formed in the third region 13 of the artificial hair bundle 2 protrudes from the upper side of the adhesive tape 31, and is a handle for picking the artificial hair bundle 2 with a finger when peeling it from the adhesive tape 31. Will be.

The plurality of artificial hair bundle sets 3 are shipped to, for example, a salon or the like that provides a hair growth method in the form shown in FIG. 8 (b). The opposite surface of the adhesive surface of the adhesive tape 31 constituting the artificial hair bundle set 3 is peeled off. With this configuration, the adhesive surface of the adhesive tape 31 of one artificial hair bundle set 3 is adhered to the peeling surface of the adhesive tape 31 of another artificial hair bundle set 3 to unite a plurality of artificial hair bundle sets 3. It is possible.

<Hair growth method>
When the hair thickening method is applied to the customer, the artificial hair bundle 2 is peeled off in order from the top artificial hair bundle set 3 shown in FIG. 8 (b). The practitioner can pick a part of the ring 13a protruding from the upper side of the adhesive tape 31 with a finger and peel off the artificial hair bundles 2 one by one from the adhesive surface of the adhesive tape 31. Next, the practitioner passes the ring 13a of the artificial hair bundle 2 shown in FIG. 5 through one hair growing from the customer's head, and positions the ring 13a of the artificial hair bundle 2 at the root of the hair. Let me. After that, the practitioner holds the masking tapes 21 and 22 shown in FIG. 7 as handles and pulls the bundle of the first region 11 and the bundle of the second region 12 of the artificial hair bundle 2 in opposite directions. Then, the ring 13a of the third region 13 forms the knot 13C, and the artificial hair bundle 2 is bound to the root of the own hair in a V shape. As a result, one hair 4 is increased to 9 (8 of which are the 1st and 2nd regions 11 and 12 of the 4 artificial hairs 1).

<Action effect>
In the artificial hair 1 of the present embodiment, as shown in FIG. 3B, the cross-sectional area of the polishing portion 13A on which the knot 13C is formed is reduced. This makes it possible to make the knot 13C of the artificial hair 1 small and inconspicuous. In particular, the knot 13C of the polishing portion 13A bound to the root of the hair 4 moves upward by about 1 cm from the root of the hair 4 in one month, but the knot 13C of the single fiber whose cross-sectional area is reduced is the knot 13C. It's small and unobtrusive, and it's hard to get caught in the teeth of a comb or brush.

In the artificial hair 1 of the present embodiment, as shown in FIG. 3B, the width of one polishing portion 13A is the length required to form a predetermined knot 13C. As a result, the boundaries B1 and B2 between the polished portion 13A and the unprocessed portion 13B are located at two locations near the knot 13C, and the knot 13C becomes difficult to untie. That is, the boundaries B1 and B2 between the portion having a small cross-sectional area and the portion having a large cross-sectional area come into contact with the two points of the knot, so that the knot 13C becomes difficult to unravel. Further, the knot 13C becomes more difficult to unravel due to the rough surface of the polished portion 13A.

As shown in FIG. 1B, the artificial hair 1 of the present embodiment has a plurality of polishing portions over the entire length of the third region 13, even if it is an extremely minute polishing portion 13A having a width of 0.5 mm to 5.0 mm. By forming the 13A, it becomes possible to easily form a knot in any of the polishing portions 13A without accurately specifying one polishing portion 13A.

In the method for producing the artificial hair 1 of the present embodiment, the cross-sectional area of the single fiber in the third region 13 is reduced by wet polishing of the wet blast shown in FIGS. 5 (b) and 6 (b) and 6 (c). .. Wet blasting can use finer abrasive particles as compared to dry blasting, and can keep the pressure during processing low. As a result, the outer peripheral surface of the extremely fine single fiber can be finely polished, and the cross-sectional area of the single fiber in the third region 13 can be partially reduced with high accuracy.

When the artificial hair bundle 2 shown in FIG. 7 and the artificial hair bundle set 3 shown in FIG. 8 are configured, the ring 13a of the third region 13 is passed through one of the own hairs to pass the first and second regions 11, The artificial hair bundle 2 can be attached to the root of the own hair simply by pulling the 12 in opposite directions. As a result, a large number of artificial hairs 1 can be efficiently bound to the customer's own hair, and the hair thickening method becomes extremely easy.

1 Artificial hair 2 Artificial hair bundle 3 Artificial hair bundle set 4 Self-hair 11 1st area 12 2nd area 13 3rd area 13A Polished part (small cross-sectional area)
13B Unprocessed part (part with large cross-sectional area)
13C Knot 13a Ring 20, 21, 22 Masking tape 31 Adhesive tape 100 Processing substrate 101 Opening 111 Double-sided tape 112 Cover plate 200 Blast gun 300 Shower head B1, B2 Boundary D1 Diameter D2, D3 Short diameter L1 Artificial hair length L2 Artificial hair spacing L3 Opening width

Claims (10)

Artificial hair for thickening that is bound to a single hair growing from the human head.
It is composed of an artificial single fiber and includes a first region including one end of the single fiber, a second region including the other end of the single fiber, and a third region located between the first and second regions. ,
In the third region, a polished portion having a width of 0.5 mm to 5.0 mm having a reduced cross-sectional area is formed by partially polishing the surface of the single fiber, and the polished portion and / or the own hair is formed. Artificial hair characterized in that a predetermined knot to be formed fits within the width of the polished portion. The artificial hair according to claim 1, wherein a plurality of the polishing portions are formed in the third region at intervals. The artificial hair according to claim 1 or 2, wherein the minor axis of the polished portion in the third region is 5% to 50% smaller than the diameter of the single fiber. The artificial hair according to any one of claims 1 to 3, wherein the ten-point average roughness Rzjis of each of the polished portions is in the range of 0.35 μm to 0.60 μm. A set of artificial hair bundles in which a plurality of bundles of artificial hair according to any one of claims 1 to 4 are held in an aligned state.
One bundle of the artificial hair is composed of two or more artificial hairs aligned along the longitudinal direction of the single fiber, and the plurality of artificial hairs are the first region and the second region of each other. Are individually bundled together, and one of the untied ones capable of tying a knot when the third region of each other pulls the bundle of the first region and the bundle of the second region in opposite directions. Form a ring,
An artificial hair bundle set, wherein the third region is adhered to a pressure-sensitive adhesive extending in one direction, and a plurality of bundles of the artificial hair are held in an aligned state along the pressure-sensitive adhesive. The method for producing artificial hair according to claim 2.
A step of arranging a plurality of the single fibers substantially in parallel at intervals and fixing one end side and the other end side of each single fiber.
In the third region of each single fiber, a plurality of masking tapes having a width corresponding to the distance between the polishing portions are omitted in a direction orthogonal to each single fiber with an interval corresponding to the width of the polishing portions. The process of pasting in parallel and
A method for producing artificial hair, which comprises a step of reducing the cross-sectional area of an unmasked portion of each single fiber by polishing the third region of each single fiber. The method for producing artificial hair according to claim 6, wherein in the third region of each single fiber, one side of the outer peripheral surface of the unmasked portion is polished to reduce the cross-sectional area. The method for producing artificial hair according to claim 6, wherein in the third region of each single fiber, one side and the other side of the outer peripheral surface of the unmasked portion are polished to reduce the cross-sectional area. The method for producing artificial hair according to any one of claims 6 to 8, wherein the unmasked portion of each single fiber in the third region is polished by injecting a liquid mixed with particles as an abrasive. .. The hair thickening method using artificial hair according to any one of claims 1 to 4.
When one or more of the artificial hairs are bound to one hair growing from a human head by a predetermined knot, it is predetermined to any one of the polished parts and / or the hair. The knot is formed, the knot fits within the width of the polished portion, and the boundary between the polished portion and the unpolished portion of the single fiber is located at two locations in the vicinity of the knot. Method.

Images