Hair extension and method for attaching hair extension

The hair extension design with a viscous sheet-like member and adjustable thickness addresses the challenge of noticeable joints, offering a natural and secure attachment method for hair extensions.

JP2025172579APending Publication Date: 2025-11-26AFIRO HOLDINGS CO LTD
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Patent Information

Application Number
JP2024078165
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2024-05-13
Publication Date
2025-11-26

AI Technical Summary

Technical Problem

Existing hair extension methods struggle with inconspicuous attachment, especially on thin or surface areas like bangs, leading to noticeable joints and unnatural appearances.

Method used

A hair extension comprising a sheet-like member with viscosity on one side and uniformly arranged hair strands, featuring adjustable thickness and incisions, which is attached to the user's hair roots using an adhesive and ultrasonic waves for enhanced adhesion.

Benefits of technology

The solution provides inconspicuous and easy-to-wear hair extensions that maintain a natural appearance by minimizing joint visibility and ensuring secure attachment.

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Abstract

To provide a hair extension whose joint portion is inconspicuous and which is easy to attach.SOLUTION: The hair extension comprises: a sheet-like member having viscosity on one surface; and a hair bundle arranged from one edge of the sheet-like member such that a hair flow is aligned, fixed on the viscous surface of the sheet-like member. The sheet-like member may have a slit part that divides the sheet-like member. The slit part may be formed on an edge part opposite the one edge of the sheet-like member where the hair bundle is arranged. A thickness of the sheet-like member may be a value between 0.05 and 2 mm, and a mutual interval of one or a plurality of slits constituting the slit part may be a value between 1 and 6 mm.SELECTED DRAWING: Figure 1
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Description

[Technical Field]

[0001] The present invention relates to hair extensions and methods for applying hair extensions. [Background technology]

[0002] Hair extensions refer to natural or artificial hair, such as human or animal hair, that is attached to a user's hair. The method of attaching hair extensions to a user's hair varies depending on the amount of hair to be attached. When attaching a small amount of hair, for example, the method includes attaching the hair by pinching the user's hair with a hairpin or clip to which the hair is attached, or by attaching the hair to an adhesive sheet-like member and folding the sheet-like member so that the sheet-like member pinches the user's hair (see Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-046616 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when attaching hair extensions to thin or surface areas of a user's bangs, in particular, they are difficult to attach, the joining parts are noticeable, there are limitations to the natural look and ease of attachment, and there are issues with adjusting the structure, hair flow, density, and matching the hair texture to the user's hair. For example, according to the method disclosed in Patent Document 1, when attaching hair extensions to a user's hair, the sheet-like member is folded so as to sandwich the user's hair, which causes thickness in the sheet-like member, making the sheet-like member noticeable and creating an unnatural look.

[0005] The present invention has been made in consideration of the above points, and aims to provide hair extensions that have inconspicuous joints and are easy to wear, and a method for wearing hair extensions. [Means for solving the problem]

[0006] The first aspect of the present invention is a hair extension comprising a sheet-like member having viscosity on one side, and hair strands arranged in a uniform flow from one end of the sheet-like member and fixed to the viscosity surface of the sheet-like member.

[0007] In the first aspect of the present invention, the sheet-like member may have a cut portion for splitting the sheet-like member.

[0008] In the first aspect of the present invention, the slit portion may be formed at an end portion of the sheet-shaped member opposite to the end at which the tufts are arranged.

[0009] In the first embodiment of the present invention, the thickness of the sheet-like member may be between 0.05 and 2 mm.

[0010] In the first aspect of the present invention, the distance between one or more cuts constituting the cut portion may be between 1 and 6 mm.

[0011] In the first aspect of the present invention, the viscous surface of the sheet-shaped member may further be coated with a mounting adhesive.

[0012] In the first aspect of the present invention, after the sheet-shaped member is attached to the user's hair, ultrasonic waves may be irradiated onto the viscous surface of the sheet-shaped member.

[0013] A second aspect of the present invention is a method for attaching hair extensions, comprising the steps of dividing a sheet-like member having viscosity on one side to reduce the width to a desired value, peeling off the release paper from the sheet-like member whose width has been reduced to the desired value to expose adhesive that has been pre-applied to the sheet-like member, and lifting the hair at a desired position on the user's scalp, and joining the surface of the sheet-like member on which the adhesive has been applied to the roots of the user's hair at the desired position. [Effects of the Invention]

[0014] According to the present invention, by comprising a sheet-like member having viscosity on one side and hair bundles arranged in a uniform flow from one end of the sheet-like member and fixed to the viscosity surface of the sheet-like member, it is possible to provide hair extensions in which the joints are inconspicuous and which are easy to wear. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a schematic diagram of the appearance of an example of a hair extension according to the present embodiment. FIG. [Figure 2] FIG. 2 is an enlarged view of a portion of the sheet-shaped member and hair bundle of the hair extension shown in FIG. [Figure 3] 3A and 3B are diagrams illustrating how to divide the hair extension according to this embodiment, with FIG. 3A being a schematic diagram of the appearance of the hair extension during division and FIG. 3B being a schematic diagram of the appearance of the hair extension after division. [Figure 4] 4(a) and 4(d) are schematic diagrams showing enlarged views of the area of ​​a user's scalp where hair extensions are attached, with FIG. 4(a) showing position A, FIG. 4(b) showing the surface hair lifted to cover position A, FIG. 4(c) showing the hair extension according to this embodiment attached to the roots of the inner hair, and FIG. 4(d) showing the lifted surface hair returned to its original position. [Figure 5] 5A and 5B are schematic diagrams comparing the state when the hair extension according to the present embodiment is attached to a user's hair with the state when a conventional hair extension is attached, where FIG. 5A shows the state before attachment and FIG. 5B shows the state after attachment. [Figure 6] 1 is a photograph of an actual hair extension according to the present embodiment. [Figure 7] 1 is a flowchart illustrating a method for attaching hair extensions according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0016] Next, an embodiment of the present invention will be described with reference to the drawings. In the description of the drawings relating to the embodiment, the same or similar parts are designated by the same or similar reference numerals. Of course, there are also parts whose relationships differ between the drawings.

[0017] Furthermore, the embodiments are merely examples of devices and methods for embodying the technical idea of ​​the present invention, and the technical idea of ​​the present invention does not limit the configuration of each component to those described below. The technical idea of ​​the present invention can be modified in various ways within the technical scope defined by the claims.

[0018] (Embodiment) A schematic diagram of the appearance of an example of a hair extension according to this embodiment is shown in Figure 1. The hair extension 10 according to this embodiment comprises a sheet-like member 11 and hair bundles 12 attached to the sheet-like member 11.

[0019] The sheet-like member 11 is formed of a thin material in a sheet shape. The sheet-like member 11 may be made of a resin material such as plastic or film, or a material such as paper or cellophane.

[0020] The hair bundles 12 may be natural hair such as human hair or animal hair, or may be synthetic hair. The shape of the hair bundles 12 may be straight, or may be wavy, such as permed hair or curly hair. The color of the hair bundles 12 may be the color of natural hair, such as black, dark brown, brown, beige, golden, red, gray, white, or a color that is not the color of natural hair, such as pink or blue.

[0021] As shown in FIG. 1, the bristle bundles 12 are attached to the sheet-like member 11 so that the direction of the bristle flow of the bristle bundles 12 is aligned downward in the plane of the drawing from the lower end 13 of the sheet-like member 11.

[0022] The bristle bundles 12 may be fixed to the sheet-like member 11 by sandwiching them between thin sheets such as a thin film or paper coated with an adhesive, or alternatively, the bristle bundles 12 may be fixed to the sheet-like member 11 with an adhesive or the like.

[0023] Natural hair or artificial hair that is the same as the hair used in the hair bundles 12, or that has a similar color or texture, may be cut to match the width of the sheet-shaped member 11 in the same direction as the hair flow of the hair bundles 12, and attached to the sheet-shaped member 11. Also, the color of the thin sheet-shaped material that forms the sheet-shaped member 11 may be the same color as the hair used in the hair bundles 12. This allows the hair extensions 10 to be attached inconspicuously to the user's hair.

[0024] FIG. 2 is an enlarged view of a portion of the sheet-like member 11 and hair bundles 12 of the hair extension 10 shown in FIG. 1. As shown in FIG. 2, the sheet-like member 11 may have a strip-like shape that is long in the horizontal direction of the page. As an example, the initial size of the sheet-like member 11 before use may be such that the length l of the vertical side 14 in the page of FIG. 1 is approximately 6 mm to 12 mm, and the length L of the bottom end 13, which is the horizontal side, is approximately 4 cm to 6 cm. The above-mentioned values ​​of the length l and length L of the sheet-like member 11 in the initial state are only examples, and may be greater or smaller than the above values. As will be described later, the hair extension 10 according to this embodiment may be separable, and the user may be able to separate the hair extension 10 when using it.

[0025] As shown in Fig. 2, one or more incisions 21a, 21b, 21c... may be provided as slits at an upper end 15 of the sheet-like member 11, which is the end opposite to a lower end 13 where the hair bundles 12 are aligned with the same hair flow direction. The one or more incisions 21a, 21b, 21c... are provided at intervals of length m at the upper end 15. As a typical example, the length m may be within a range of 1 mm to 6 mm. Note that although the one or more incisions 21a, 21b, 21c... of the sheet-like member 11 shown in Fig. 2 are provided at intervals of length m, the one or more incisions 21a, 21b, 21c... do not have to be provided at regular intervals.

[0026] As mentioned above, the hair extension 10 according to this embodiment may be separable. Figures 3(a) and 3(b) are diagrams showing how the hair extension 10 shown in Figures 1 and 2 is divided. The examples shown in Figures 3(a) and 3(b) show how the hair extension 10 is divided into hair extension 10a and hair extension 10b.

[0027] As shown in Fig. 3(a), the sheet-like member 11 is grasped with the fingers of both hands, and the sheet-like member 11 is split at a desired one of one or more incisions 21a, 21b, 21c, etc. to divide the sheet-like member 11 into sheet-like members 11a and 11b. Fig. 3(a) shows an example in which the sheet-like member 11 is split at incision 21a, but this is just one example, and the sheet-like member 11 may be split at a desired incision such as incision 21b or incision 21c to adjust the width of the sheet-like member 11 to a desired length.

[0028] 3(b) shows hair extensions 10a obtained by splitting the sheet-like member 11 at the incisions 21a. When the sheet-like member 11 is split into sheet-like members 11a and 11b, the hair strands 12 fixed to the sheet-like member 11 are split into hair strands 12a fixed to the sheet-like member 11a and hair strands 12b fixed to the sheet-like member 11b. By splitting the sheet-like member 11 at the desired incisions to adjust the width of the sheet-like member 11 to the desired length, a desired amount of hair strands can be cut out from the hair extensions 10 and attached to the user's hair.

[0029] The thickness of the sheet-like member 11 can be adjusted by adjusting the amount of hair bundles pre-attached to the sheet-like member 11. When the amount of hair in the hair bundles pre-attached to the sheet-like member 11 is large, the thickness is thicker, and when the amount of hair is small, the thickness is thinner. By appropriately selecting the thickness of the sheet-like member 11 according to the amount of hair on the part of the user's head where the sheet-like member 11 is to be attached and / or the desired amount of hair to be attached, a desired hairstyle with a natural finish can be obtained. As an example, the thickness of the sheet-like member 11 is within the range of 0.05 mm to 2 mm.

[0030] The sheet-like member 11 has one surface 22 coated with adhesive in advance, making it viscous. Before use, a release paper may be attached to the viscous surface 22 of the sheet-like member 11, making the sheet-like member 11 into a sticker-like state. When the sheet-like member 11 is in a sticker-like state, as shown in Figures 3(a) and 3(b), when dividing the sheet-like member 11, the sheet-like member 11 is divided with the release paper still attached to the surface 22. When in use, the release paper is removed, and the viscous surface 22 comes into close contact with the portion of the user's hair where the hair extensions 10 are to be attached, thereby attaching the hair extensions 10 to the user's hair.

[0031] In order to increase the adhesiveness of the viscous surface 22, after the release paper is removed, an attachment adhesive may be further applied to the viscous surface 22 of the sheet-like member 11. After the attachment adhesive is applied to the surface 22, the surface 22 to which the attachment adhesive is applied is brought into close contact with the portion of the user's hair where the hair extensions 10 are to be attached, thereby attaching the hair extensions 10 to the user's hair.

[0032] The mounting adhesive applied to surface 22 may be, for example, a glue adhesive. The mounting adhesive applied to surface 22 may be an instant adhesive. The mounting adhesive, such as glue or instant adhesive, may be applied to surface 22 using a brush or the like, or may be applied to surface 22 by using a dropper or a container with a dropper-shaped lid and dispensing the mounting adhesive from a small hole in the dropper.

[0033] As will be described later, the hair extensions 10 according to this embodiment are attached to the roots of the hair, and therefore the attachment adhesive applied to the surface 22 may adhere to the scalp. Therefore, if the attachment adhesive applied to the surface 22 is a glue adhesive, a glue adhesive that is safe and less irritating to the scalp is preferred. For example, a medical-grade or medical glue adhesive used in eyelash extensions is preferred, and specifically, for example, a butyl glue adhesive whose adhesive component is butyl cyanoacrylate is preferred.

[0034] In order to further increase the strength of attachment to the user's hair by the adhesive applied to the viscous surface 22 of the hair extension 10 according to this embodiment, or by the adhesive applied to surface 22 and the attachment adhesive, ultrasonic waves may be applied to surface 22 after the hair extension 10 is attached to the user's hair. By applying ultrasonic waves to the adhesive applied to surface 22, or to the adhesive applied to surface 22 and the attachment adhesive, the adhesive, or the adhesive and the attachment adhesive, fuses with the user's hair, increasing the strength of attachment between surface 22 and the user's hair.

[0035] The procedure for attaching the hair extension 10 according to this embodiment to a user's hair will be described below with reference to Figures 3 and 4. Figure 4 is an enlarged schematic diagram of the area of ​​the user's hair where the hair extension 10 will be attached, showing the user's hair. In Figure 4, eight hairs are shown as an example, with the top of each hair being the root and the bottom of each hair being the tip. For example, the top of the hair 40 shown in Figure 4(a) is the root 401 of the hair 40, and the bottom is the tip 402.

[0036] First, the sheet-like member 11 is cut at a desired incision out of one or more incisions 21a, 21b, 21c, etc. so that the width of the sheet-like member 11 has a desired length. In this embodiment, as an example, the sheet-like member 11 is cut at the incision 21a as shown in Fig. 3(a), and the obtained hair extensions 10a are attached to the user's hair as shown in Fig. 3(b).

[0037] The release paper previously attached to the surface 22 of the sheet-like member 11a obtained by cutting is removed, and the viscous surface 22 is exposed.

[0038] The viscous surface 22 is attached to the user's hair at a desired position A as shown in Fig. 4(a). At this time, the viscous surface 22 is attached to the inside of the back of the user's hair, not to the surface of the hair at the attachment position.

[0039] The procedure for attaching the device to the inside of the back of the user's hair will now be described in detail. First, as shown in Fig. 4(b), the user's hair 31 on the surface that covers position A is lifted up so that the roots 32 located at position A of the user's hair are exposed.

[0040] Next, as shown in FIG. 4(c), the hair extension 10a is attached by bringing the viscous surface 22 into close contact with the roots 32 of the exposed inner hair 33.

[0041] Finally, as shown in Figure 4(d), after the hair extensions 10a are attached, the raised hair 31 on the surface is lowered and returned to its original position as shown in Figure 4(a). The sheet-like member 11a is hidden by the hair on the surface and is not noticeable, achieving a natural appearance when attached.

[0042] 5A and 5B are schematic diagrams comparing the appearance of the hair extension 10 according to the present embodiment attached to the hair of a user 41 with the appearance of a conventional hair extension. As shown in FIG. 5A, the user's bangs 42 are short and the user wishes to lengthen them. As shown in FIGS. 3A and 3B, the hair extension 10 is divided into hair extensions 10a and attached to multiple users' bangs 42. FIG. 5B shows the appearance of multiple hair extensions 10a attached to multiple users' bangs 42. The sheet-like member 11a of the hair extension 10a is divided to narrow its width, so the sheet-like member 11a is not noticeable when attached to the user's bangs 42, maintaining a natural appearance.

[0043] For comparison, Fig. 5(b) shows a state in which a plurality of conventional hair extensions 43 are attached to the bangs 42 of a user 41. The attachment member 44 of the conventional hair extensions 43, which corresponds to the sheet-like member, is larger than the sheet-like member 11a, and when attached to the user's bangs 42, the attachment member 44 stands out, resulting in an unnatural appearance.

[0044] FIG. 6 shows a photograph of the actual hair extension 10 according to the present embodiment shown in FIG. 1. The photograph shown in FIG. 6 is a photograph of the hair extension 10 taken from the back side of the surface 22 of the sheet-like member 11. The same hair as the hair bundle 12 is adhered to the back side of the surface 22 of the sheet-like member 11 in the same direction as the hair flow of the hair bundle 12. As shown in FIG. 4(c), the surface 22 of the sheet-like member 11 is brought into close contact with the roots 32 of the hair 33, so that after the surface 22 is brought into close contact with the roots 32 of the hair 33, the back side of the surface 22 is visible from the front. By adhering the hair to the back side of the surface 22 and further covering the sheet-like member 11 with the hair on the front side as shown in FIG. 4(d), the sheet-like member 11 becomes inconspicuous, resulting in a natural appearance.

[0045] The hair extensions 10 according to this embodiment are removable. The method for removing the hair extensions 10 is selected depending on the viscous strength of the adhesive applied to the surface 22 and the adhesive strength of the attachment adhesive. If the viscous strength of the adhesive applied to the surface 22 and the adhesive strength of the attachment adhesive are low, the hair extensions 10 can be removed from the user's hair as is. If at least one of the viscous strength of the adhesive applied to the surface 22 and the adhesive strength of the attachment adhesive is high, the hair extensions 10 can be removed by removing the attachment adhesive or reducing its viscosity using water or a remover.

[0046] The type of strong or weak adhesive applied to the surface 22 and the type of strong or weak attachment adhesive can be selected depending on whether the hair extension 10 will be attached to the desired position on the user's hair for a long period of time or a short period of time. For example, if the hair extension 10 will be attached to the user's hair for a short period of time, such as only a few hours, a type of adhesive with weak adhesive strength may be used as the adhesive applied to the surface 22 and / or a type of attachment adhesive with weak adhesive strength. If the hair extension 10 will be attached to the user's hair for a long period of time, such as several weeks to several months, a type of adhesive with strong adhesive strength and / or a type of attachment adhesive with strong adhesive strength may be used as the adhesive applied to the surface 22. In this way, the type of strong or weak adhesive applied to the surface 22 and the type of strong or weak attachment adhesive may be selected appropriately depending on the period of time the hair extension 10 will be attached to the user's hair.

[0047] When the hair extensions 10 are worn on the user's hair for an extended period of time, the user's hair may grow after the hair extensions 10 are worn, and the user's hairstyle may change within about one or two months from the time the hair extensions 10 were worn, resulting in the desired hairstyle no longer being the desired one. Because the hair extensions 10 according to this embodiment are removable, if the user's hair grows after the hair extensions 10 are worn on the user's hair and the desired hairstyle is no longer the desired one, the hair extensions 10 can be removed from the user's hair. Furthermore, if human hair is used for the hair strands 12, the hair can be cut as is rather than removed.

[0048] The removed hair extensions 10 can be washed to remove any adhesive used for attachment, dried, and then reattached to the user's hair.

[0049] The hair extension 10 according to this embodiment is easy to attach and remove, so that the user can attach and remove it from their own hair at home, etc. This allows the user to easily use hair extensions at home, etc.

[0050] The hair extensions 10 according to this embodiment can be used for bangs, which are noticeable when conventionally worn, when you want to lengthen your bangs after cutting them too short, or to cover thinning hair or hair loss after childbirth.

[0051] The method for attaching hair extensions according to this embodiment will be described with reference to the flowchart shown in FIG.

[0052] In step S701, a sheet-like member having viscosity on one side is divided to reduce the width to a desired value (dividing step).

[0053] In step S702, the release paper of the sheet-like member whose width has been reduced to a desired value is peeled off to expose the viscous surface of the sheet-like member (exposing step).

[0054] In step S703, the user's hair is lifted so that the roots of the hair at a desired position on the user's head are exposed (root exposing step).

[0055] In step S704, the viscous surface of the sheet-like member is attached to the exposed roots of the user's hair at the desired position (attaching step).

[0056] In step S705, the lifted hair of the user is returned to its original position (returning step).

[0057] As mentioned above, the present invention naturally includes various embodiments not described herein. Therefore, the technical scope of the present invention is defined only by the invention-specifying matters according to the scope of the claims that are appropriate from the above description. [Explanation of symbols]

[0058] 10 Hair Extensions 11 Sheet-like member 12 hair bundles 13 Bottom edge 15 Top 21a, 21b, 21c... Cut 22 sides 31 Surface Hair 32 base 33 Internal Hair 40 Hair 401 Root 402 Tips 41 users 42 Bangs 43 Traditional Hair Extensions 44 Mounting member

Claims

1. a sheet-like member having viscosity on one side; a tuft of hair arranged in a uniform flow from one end of the sheet-like member and fixed to a viscous surface of the sheet-like member; A hair extension comprising:

2. The hair extension according to claim 1, wherein the sheet-like member has a slit portion for splitting the sheet-like member.

3. 3. The hair extension according to claim 2, wherein the slit portion is formed at an end of the sheet-like member opposite to the end at which the hair bundles are arranged.

4. 2. The hair extension according to claim 1, wherein the thickness of the sheet-like member is between 0.05 and 2 mm.

5. 4. The hair extension according to claim 2 or 3, wherein the spacing between one or more slits constituting the slit portion is between 1 and 6 mm.

6. 2. The hair extension according to claim 1, wherein the viscous surface of the sheet-like member is further coated with a mounting adhesive.

7. 10. The hair extension according to claim 1, wherein after being attached to a user's hair, ultrasonic waves are irradiated onto the viscous surface of the sheet-like member.

8. dividing a sheet-like member having a viscous surface to reduce its width to a desired value; a step of peeling off the release paper from the sheet-like member whose width has been reduced to a desired value to expose a viscous surface of the sheet-like member; Lifting the hair at a desired position on the user's scalp and attaching the viscous surface of the sheet-like member to the roots of the user's hair at the desired position; A method for attaching hair extensions, comprising:

Citation Information

Patent Citations

  • Hair extension, attaching method thereof and hair extension attaching tape

    JP2021046616A