Methods of using artificial hair to fix natural eyelashes during eyelash extensions

Abstract

This invention provides a method for fixing artificial hair for eyelash extensions onto natural eyelashes. In eyelash extensions where multiple artificial hairs are glued to natural eyelashes growing on the eyelid, reliable glue fixation of the artificial hairs is particularly difficult, and most artificial hairs fall out within a shorter timeframe than expected. First, a liquid adhesive with cyanoacrylate as the main component is applied to the root of the artificial hair to be fixed. The same adhesive is then applied to the opposite side of the pre-attachment position on the periphery of the natural eyelashes used to fix the artificial hair. The glue-coated artificial hair is then glued to the pre-fixation position on the natural eyelashes. Next, the same adhesive is applied to the root of the next artificial hair to be fixed, and this artificial hair is glued to the opposite side of the previously glued position. This process is repeated sequentially. As a result, the adhesives attract each other due to the intermolecular forces generated between the adhesives adhering near the roots of the artificial hairs, forming a stable film of adhesive covering the roots of the artificial hairs on the periphery of the natural eyelashes.

Description

Technical Field

[0001] This invention relates to cosmetic procedures for eyelashes, and more specifically, to a cosmetic procedure known as eyelash extensions. Background Technology

[0002] Eyelash extensions, a cosmetic procedure that involves attaching artificial hair made of chemical fibers to real eyelashes, can increase the length and volume of eyelashes with a more natural look compared to false eyelashes. Therefore, they have a better cosmetic effect and have gained popularity among many women in recent years.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent No. 595355 Summary of the Invention

[0006] The technical problem that the invention aims to solve

[0007] Eyelash extensions use an adhesive called glue to attach and fix artificial hair to the natural eyelashes growing on the eyelids. In daily life, such as washing your face, it is necessary to maintain the artificial hair's fixation to the natural eyelashes for a certain period of time. Although this is naturally affected by the individual characteristics and condition of the natural eyelashes, as well as the practitioner's skill, eyelash extensions usually last for about three weeks to a month. It is impossible to prevent the artificial hair from weakening its fixation to the natural eyelashes over time. When the glue is not sufficient to adhere the artificial hair, it cannot maintain a stable fixation to the originally expected lifespan, and the artificial hair may fall off the natural eyelashes in a shorter period of time.

[0008] Therefore, when attempting to secure the fixation by increasing the amount of glue used or expanding the glue application area, it may result in an unnatural appearance or place an excessive burden and adverse effect on the natural eyelashes and the eyelids from which they grow. Thus, it is necessary to control the amount of glue used and the application area to the minimum required. However, it is difficult to simultaneously ensure a secure bond and fixation of the artificial hair. The degree of completion and durability vary considerably depending on the practitioner's skill.

[0009] The inventors of this invention have conducted dedicated research to solve the aforementioned problems in eyelash extensions. As a result, they have successfully developed a method for fixing artificial hair for eyelash extensions onto natural eyelashes. This method, by focusing on the characteristics of the adhesive used as glue and carefully designing its application method, is unaffected by the practitioner's skill. It can firmly adhere and fix the artificial hair for extensions onto natural eyelashes, maintain a stable fixation state for a long time, and achieve high quality and good cosmetic results. This invention is hereby proposed.

[0010] Technical solutions for solving technical problems

[0011] When fixing multiple artificial hairs for eyelash extensions to the periphery of natural eyelashes, firstly, a liquid adhesive with cyanoacrylate as the main component is applied to the root of the artificial hair to be fixed. Then, the same adhesive is applied to the opposite side of the pre-attachment position on the periphery of the natural eyelashes where the artificial hair is to be fixed. The adhesive-coated artificial hair is then bonded to the pre-fixation position on the natural eyelashes. Next, the same adhesive is applied to the root of the next artificial hair to be fixed, and the artificial hair is bonded to the opposite side of the previously bonded position. This process is repeated sequentially. As a result, the adhesives attract each other due to the intermolecular forces generated between the adhesives adhering near the roots of the artificial hairs, forming a stable film of adhesive covering the roots of the artificial hairs on the periphery of the natural eyelashes. As the adhesive cures, the artificial hairs are firmly fixed to the natural eyelashes, thus solving the aforementioned problem.

[0012] The effects of the invention

[0013] Because an adhesive primarily composed of cyanoacrylate is pre-applied to the opposite side of the artificial hair's fixing position before the artificial hair is applied, the adhesive's wettability before curing creates intermolecular forces between the adhesive particles adhering to the natural eyelashes, causing them to attract each other and spread around the natural eyelashes, forming a stable adhesive film. Furthermore, after the adhesive cures, the bond between the natural eyelashes and the artificial hair is stronger, maintaining a stable and secure bond for a longer period, effectively preventing the artificial hair from accidentally falling off the natural eyelashes and significantly extending the lifespan of eyelash extensions. In addition, the entire process requires no special skills and can be performed relatively simply, resulting in less adhesive usage. Therefore, it does not place excessive burden or adverse effects on the natural eyelashes or the eyelids where they grow. This results in high-quality eyelash extensions with artificial hair fixing that feels natural, has good volume, provides excellent cosmetic results, and is highly durable, even for inexperienced practitioners. Attached Figure Description

[0014] Figure 1 This is a three-dimensional magnified view of the artificial hair used in the first embodiment of the present invention.

[0015] Figure 2 This is a three-dimensional enlarged view of the artificial hair arranged in a curtain shape before the fixing operation in the first embodiment.

[0016] Figure 3 This is a magnified three-dimensional view of the state in the first embodiment where multiple artificial hairs arranged in a curtain shape are picked up simultaneously with tweezers.

[0017] Figure 4 This is a magnified three-dimensional view of the state in which liquid glue adheres to artificial hair picked up with tweezers in the first embodiment.

[0018] Figure 5 This is a three-dimensional magnified view of the real eyelashes used to fix the artificial hair in the first embodiment.

[0019] Figure 6 This is a magnified cross-sectional view of the real eyelashes shown in Figure 5.

[0020] Figure 7 This is an enlarged cross-sectional view of a real eyelash, illustrating the situation during the first artificial hair fixing operation in the first embodiment.

[0021] Figure 8 It is in Figure 7 This is a magnified cross-sectional view of a real eyelash, illustrating the attraction of the glue due to intermolecular forces after the first artificial hair fixing process is completed.

[0022] Figure 9 This is a cross-sectional magnified view of a real eyelash in its state after the first artificial hair fixing operation in the first embodiment.

[0023] Figure 10 This is an enlarged cross-sectional view of a real eyelash, illustrating the situation during the second artificial hair fixing operation in the first embodiment.

[0024] Figure 11 This is a three-dimensional magnified view of a real eyelash after the second artificial hair fixing operation in the first embodiment has been completed.

[0025] Figure 12 yes Figure 11 A magnified cross-sectional view of the real eyelashes in the shown state.

[0026] Figure 13 This is a cross-sectional enlarged view of a real eyelash showing other fixation conditions of the artificial hair in the first embodiment.

[0027] Figure 14 Similarly, this is a cross-sectional enlarged view showing a different fixed condition of the real eyelashes in the first embodiment.

[0028] Figure 15 This is a cross-sectional enlarged view of the second embodiment showing a pair of artificial hairs fixed to real eyelashes.

[0029] Figure 16 yes Figure 15 A magnified cross-sectional view of the real eyelashes in the shown state.

[0030] Figure 17This is a perspective view of a fan-shaped bundle of artificial hair that will be used in the third embodiment.

[0031] Figure 18 Also during the implementation of the third embodiment, a three-dimensional magnified view of the state in which liquid glue is attached to the fan-shaped artificial hair bundle as the first stage.

[0032] Figure 19 Similarly, this is a magnified cross-sectional view of the second stage, in which liquid glue is applied to the designated position on the natural eyelashes, as viewed from the root of the eyelashes.

[0033] Figure 20 This is a magnified three-dimensional image showing the next stage of attempting to bond and fix the fan-shaped artificial hair bundles to real eyelashes.

[0034] Figure 21 yes Figure 22 The image shown is a magnified cross-sectional view taken from the root of the natural eyelashes.

[0035] Figure 22 This is a magnified cross-sectional view taken from the root of the eyelashes, illustrating the state in which the adhesive attached to the periphery of the eyelashes in the third embodiment attracts each other due to intermolecular forces.

[0036] Figure 23 This is a three-dimensional magnified view of the state in the third embodiment where the first fan-shaped artificial hair bundle is fixed behind the real eyelashes.

[0037] Figure 24 This is also a magnified three-dimensional view showing the state of the glue adhering to the second fan-shaped artificial hair bundle in the next stage.

[0038] Figure 25 This is a magnified 3D image showing the second fan-shaped artificial hair cluster attached before the real eyelashes.

[0039] Figure 26 yes Figure 25 The image shown is a magnified cross-sectional view taken from the root of the natural eyelashes.

[0040] Figure 27 This is an enlarged cross-sectional view taken from the root of the natural eyelashes, illustrating the state in the third embodiment where the liquid adhesive is additionally attached to the vicinity of the fixed position of the first fan-shaped artificial hair bundle, and the adhesives are attracted to each other due to intermolecular forces.

[0041] Figure 28 This is a three-dimensional magnified view of the state in the third embodiment where the fixing of all the fan-shaped artificial hair bundles to the real eyelashes has been completed. Detailed Implementation

[0042] The most distinctive feature is that, when attempting to attach multiple artificial hairs to natural eyelashes for eyelash extensions, an adhesive with cyanoacrylate as the main component is pre-applied to the opposite side of the pre-fixed position of the artificial hairs towards the natural eyelashes. When the artificial hairs are attached to the pre-fixed position of the natural eyelashes using the adhesive, the wettability of the adhesive with cyanoacrylate as the main component causes intermolecular forces to be generated between the adhesive on the surface of the pre-attached natural eyelashes and the adhesive at the root of the artificial hairs. As a result, the adhesives attract each other, thereby forming a stable film of adhesive around the natural eyelashes. Due to the curing of the adhesive, the attachment and fixation of the artificial hairs to the natural eyelashes becomes more stable and secure.

[0043] [First Embodiment]

[0044] Referring to the accompanying drawings, a first embodiment of the method for fixing artificial hair for eyelash extensions in natural eyelashes according to the present invention will be described.

[0045] Figure 1 This refers to the artificial hair used in eyelash extensions in this invention. The artificial hair 1 is made from materials such as polybutylene terephthalate (PBT) and polypropylene terephthalate (PTT). It is formed from a root portion 3 with a diameter smaller than the natural eyelashes 2 used for fixing, and a tapered, pointed upper portion 4 with an even smaller diameter. Before the fixing process, such as... Figure 2 As shown, multiple artificial hairs 1 are pre-placed with their roots 3 grounded and arranged in a curtain-like pattern.

[0046] Then, as Figure 3 As shown, with multiple artificial hairs 1 arranged side by side, their roots 3 are simultaneously picked up using tweezers 5, as follows: Figure 4 As shown, the liquid glue 6 that is raised on the upper surface of the glue board 8 is scooped up from the root 3 of the artificial hair 1, so that the liquid glue 6 is attached to the root 3.

[0047] The adhesive 6 used in this invention is a cyanoacrylate as the main component, and contains thickeners such as PMMA (acrylic resin) and moisture-curing polyurethane, as well as acetone-based accelerators. It has the characteristics of fast reaction speed, reacting with trace amounts of moisture in the air, and curing in a short time, and has been traditionally used for eyelash extensions. It should be noted that cyanoacrylates can include methyl, ethyl, butyl, ethoxyethyl, and octyl derivatives, and all of these derivatives can be used. In the field of eyelash extensions, adhesives other than the aforementioned cyanoacrylate are sometimes used, but these have problems with durability or cause whitening, and are therefore not preferred.

[0048] In addition, the viscosity of adhesive 6 is usually expressed in mPa·S (millipascal-second), but from the perspective of curing time, workability, wettability, etc., adhesives with a viscosity of 50 to 1000 mPa·S (millipascal-second) are preferred, and adhesives with a viscosity of 150 to 300 mPa·S (millipascal-second) are particularly suitable.

[0049] on the other hand, Figure 5 This is a 3D view of the real eyelashes 2 used to fix the artificial hair 1. Figure 6 It is its sectional view, as described above. Figure 5 and Figure 6 As shown, liquid glue 6 is pre-applied to the opposite side of the pre-adhesion position 7 of the real eyelashes 2, and then, as... Figure 7 As shown, use tweezers 5 to pick up the artificial hair 1 that is in a parallel position and has glue 6 attached, and stick it to the pre-attachment position 7 of the real eyelash 2. Thus, as... Figure 8 As shown, the liquid glue 6 attached to the artificial hair 1 and the liquid glue 6 applied to the opposite side of the real eyelashes 2 attract each other, as... Figure 9 As shown, a stable film 9 of the adhesive 6 is formed on the periphery of the real eyelashes 2.

[0050] It should be noted that the attraction between liquid adhesives 6 is based on their wettability. This wettability is stronger between materials of the same type. Liquid adhesives 6, which are mainly composed of cyanoacrylate, have intermolecular forces generated by this wettability when they interact with each other.

[0051] Furthermore, as before, the group of multiple artificial hairs 1 arranged in a curtain shape are simultaneously picked up with tweezers 5, and the liquid glue 6 bulging on the upper surface of the glue board 8 is scooped up from the root 3 of the artificial hairs 1, so that the glue 6 adheres to the root 3, as shown. Figure 10 As shown, the artificial hair 1 is adhered to the opposite side of the position where the artificial hair 1 has already been adhered. At this time, as in the first fixation operation of the artificial hair 1, the intermolecular forces generated by the wettability of the liquid glue 6 act between the glue 6, making the film 9 around the real eyelash 2 more stable and firm. Figure 11 This is a 3D image of real eyelashes after the fixation process is completed. Figure 12 This is its sectional view.

[0052] It should be noted that, in this first embodiment, although the bonding and fixing of the artificial hair 1 to the real eyelashes 2 is performed in two steps, it can also be performed in three or more steps. Furthermore, in this first embodiment, as... Figure 12 As shown, four artificial hairs 1 are gathered together and glued to the real eyelashes 2, but it can also be done as follows: Figure 13 As shown, the artificial hairs 1 are glued and fixed to the real eyelashes 2 with gaps between them. Alternatively, they can be... Figure 14As shown, the artificial hair is bonded and fixed without gaps. In addition, the cross-section of the artificial hair 1 shown in the above figures is circular, but it can also be a cross-section other than a circle, such as an elliptical cross-section, a gourd-shaped cross-section, or a horseshoe-shaped cross-section.

[0053] This first embodiment has the structure described above. Because a liquid adhesive 6, primarily composed of the same cyanoacrylate, is applied to the opposite side of the pre-bonding position 7 of the artificial hair 1 before the bonding operation, after the bonding operation, the adhesive 6 attracts each other due to the intermolecular forces generated between the adhesive 6 and the natural eyelash 2. The liquid adhesive 6 spreads across the periphery of the natural eyelash 2, forming a stable film 9 of adhesive 6 on the periphery of the natural eyelash. Therefore, after the adhesive 6 cures, the bond between the natural eyelash 2 and the artificial hair 1 is stronger, maintaining a stable bond for a longer period, effectively preventing the artificial hair 1 from accidentally falling off the natural eyelash 2, and significantly extending the lifespan of the eyelash extensions compared to current methods. It should be noted that the lifespan of existing eyelash extensions is typically three weeks to one month, but in this first embodiment, it can be extended to about one and a half months.

[0054] In addition, the series of procedures do not require special skills and can be performed relatively simply, resulting in a reduction in the amount of glue used. This avoids excessive burden and adverse effects on the natural eyelashes and the eyelids from which they grow. Even inexperienced practitioners can perform high-quality eyelash extensions with artificial hair that feel natural, have volume, provide good aesthetic results, and are durable.

[0055] [Second Embodiment]

[0056] In this second embodiment, the artificial hair 1 glued and fixed to the real eyelashes 2 consists of two hairs, i.e., a pair, such as... Figure 15 , Figure 16 As shown, a pair of artificial hairs 1 are held at an angle where their cores B intersect the cores A of the natural eyelashes 2, and are respectively glued and fixed to the natural eyelashes 2 in a circumferential manner while intersecting. The application method of the adhesive 6 to the root 3 of the artificial hairs 1 and to the periphery of the natural eyelashes 2 is exactly the same as in the first embodiment.

[0057] In this second embodiment, since the artificial hair 1 and the real eyelash 2 are bonded and fixed in an obliquely intersecting manner, the contact area between the artificial hair 1 and the real eyelash 2 can be increased, thereby making the bonding and fixing of the artificial hair 1 to the real eyelash 2 more stable and firm.

[0058] In addition, because a pair of artificial hairs 1 are cross-fixed around the real eyelashes 2, even with only two artificial hairs 1, sufficient volume can be displayed.

[0059] [Third Embodiment]

[0060] In this third embodiment, as Figure 17 As shown, the roots 3 of multiple artificial hairs 1 used to fix the real eyelashes 2 are gathered together to form a fan-shaped artificial hair bundle 10 with the hair tips 4 divided into radial and fan-shaped sections.

[0061] First, such as Figure 18 As shown, liquid glue 6 is applied to the root 3 of the fan-shaped artificial hair bundle 10, and as... Figure 19 As shown, the same glue 6 is also applied to the opposite side of the pre-adhesion position 7 of the real eyelashes 2 that are being bonded and fixed to the fan-shaped artificial hair bundle 10.

[0062] Furthermore, after applying the same glue 6 to the opposite side of the pre-adhesion position 7 of the real eyelashes 2 that are intended to be bonded and fixed to the fan-shaped artificial hair bundle 10, respectively, as shown... Figure 20 , Figure 21 , Figure 23 As shown, the fan-shaped artificial hair bundle 10 is bonded around the pre-bonding position 7 of the real eyelash 2.

[0063] Thus, as Figure 22 As shown, the liquid adhesive 6 attached to the fan-shaped artificial hair bundle 10 and the liquid adhesive 6 attached to the opposite side of the real eyelash 2 attract each other, forming a film 9 of the adhesive 6 on the periphery of the real eyelash 2. Furthermore, the adhesive 6 is then attached near the root of the fan-shaped artificial hair bundle 10, where the first bonding operation has been completed, as shown... Figure 24 As shown, the liquid glue 6 is also applied to the root 3 of the other fan-shaped artificial hair bundles 10, as... Figure 25 and Figure 26 As shown, the fan-shaped artificial hair bundle 10 is bonded around the position where the glue 6 is attached before the first bonding operation of the fan-shaped artificial hair bundle 10.

[0064] Thus, as Figure 27 As shown, due to the intermolecular forces generated between the liquid glue 6 attached to the periphery of the real eyelashes 2, the glue 6 attached to the real eyelashes 2 attracts each other, making the glue film 9 formed on the periphery of the real eyelashes 2 more stable and firm.

[0065] Figure 28 This indicates that the adhesive 6 has cured and the bonding and fixing of the fan-shaped artificial hair bundle 10 to the real eyelashes 2 has been completed.

[0066] It should be noted that in the third embodiment described above, the bonding operation of the fan-shaped artificial hair bundle 10 to the real eyelashes 2 is performed in two steps, but it can also be performed in three or more steps.

[0067] In this third embodiment, similar to the first embodiment, the liquid glue 6 applied to the periphery of the real eyelashes 2 is attracted to each other by intermolecular forces, forming a stable film 9 of glue 6 on the periphery of the real eyelashes 2. Therefore, even a fan-shaped artificial hair bundle 10 composed of multiple artificial hairs can be stably and firmly fixed to the periphery of the real eyelashes 2.

[0068] Industrial applicability

[0069] It has great value in the beauty industry.

[0070] Explanation of reference numerals in the attached figures

[0071] 1. Artificial hair; 2. Real eyelashes; 3. Root; 4. Hair tip; 5. Tweezers; 6. Glue; 7. Pre-bonding position; 8. Glue board; 9. Film; 10. Fan-shaped artificial hair bundle.

Claims

1. A method for fixing artificial hairs for eyelash extensions onto natural eyelashes, characterized in that multiple artificial hairs for eyelash extensions are fixed around the periphery of the natural eyelashes. First, a liquid adhesive with cyanoacrylate as its main component is applied to the root of the artificial hair to be fixed. The same adhesive is also applied to the opposite side of the pre-bonding position on the periphery of the natural eyelashes used to fix the artificial hair. Then, the adhesive-coated artificial hair is bonded to the pre-fixing position on the natural eyelashes. The adhesive on the artificial hair and the adhesive applied to the opposite side of the natural eyelashes attract each other, forming a stable adhesive film on the periphery of the natural eyelashes. Next, the same adhesive is applied to the root of the artificial hair to be fixed, just as before, and the artificial hair is glued to the opposite side of the position where the artificial hair has already been glued. The above operation is repeated in sequence. As a result, the adhesives attract each other due to the intermolecular forces generated between the adhesives attached near the root of the artificial hair, forming a stable film of adhesive covering the root of the artificial hair on the periphery of the real eyelashes. As the adhesive cures, the artificial hair is fixed to the real eyelashes.

2. The method for fixing artificial hair for eyelash extensions in natural eyelashes as described in claim 1, characterized in that, Multiple artificial hairs are arranged side-by-side as a single unit, and these artificial hair assemblies are then adhered to the periphery of the natural eyelashes.

3. The method for fixing artificial hair for eyelash extensions in natural eyelashes as described in claim 1, characterized in that, Multiple artificial hairs are seamlessly attached to the periphery of the natural eyelashes, with their roots interlocking.

4. The method for fixing artificial hair for eyelash extensions in natural eyelashes as described in claim 1, characterized in that, Multiple artificial hairs are glued to the periphery of the natural eyelashes, with the roots separated.

5. The method for fixing artificial hair for eyelash extensions in natural eyelashes as described in claim 1, characterized in that, A pair of artificial hairs are attached to the real eyelashes in a wrap-around manner, with their cores held at an angle to the cores of the real eyelashes.

6. The method for fixing artificial hair for eyelash extensions in natural eyelashes as described in claim 1, characterized in that, The roots of multiple artificial hairs used to fix real eyelashes are gathered together to form a fan-shaped artificial hair bundle with the hair tips divided into radial sections.

7. The method for fixing artificial hair for eyelash extensions in natural eyelashes as described in any one of claims 1 to 6, characterized in that, The viscosity of the adhesive is 50 to 1000 mPa·s (mPa·s).

Images