Hair clip manufacturing method and hair clip

Abstract

To provide a manufacturing method of a barrette including an anti-slip member having high adhesive strength to a clamping piece, facilitating attachment, and yet, capable of reducing odor during a manufacturing process of the barrette and odor of the barrette manufactured by the manufacturing process.SOLUTION: A manufacturing method of a barrette including a pair of clamping pieces consisting of an outer clamping piece for clamping hair and an inner clamping piece connected to one end of the outer clamping piece, and a cylindrical silicone anti-slip member inserted through the inner clamping piece, the manufacturing method of the barrette includes: an immersion step of immersing the anti-slip member in a mixed solution denatured ethanol containing ethanol and methanol and volatile oil containing naphthenic hydrocarbons; an insertion step of inserting the inner clamping piece into the anti-slip member expanded by immersing it into the solution; and an attachment step of drying the inserted anti-slip member and attaching the anti-slip member dried to the inner clamping piece.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a method for manufacturing a hair clip with an anti-slip feature, and to the hair clip itself. [Background technology]

[0002] In conventional hair clips, a tubular anti-slip member with high frictional resistance is inserted directly onto a clamping piece made of metal or synthetic resin, or, to make the anti-slip member easy to attach and less likely to peel off, a heat-shrinkable tube made primarily of polyolefin is inserted into the clamping piece and heat-shrunk to attach it to the clamping piece. There are known manufacturing methods for increasing the adhesion of such tubular anti-slip members to the clamping pieces and making them easier to attach.

[0003] For example, Patent Document 1 filed by the applicant discloses a method for manufacturing a hair clip that includes a pair of clamping pieces, at least an inner clamping piece that is connected to one end of an outer clamping piece and that has an anti-slip member attached to the inner clamping piece, and the method comprises an immersion step of immersing a silicone tube that serves as the anti-slip member in a solution of absolute ethanol and benzene, an insertion step of inserting the silicone tube that has been immersed in the solution and expanded, and an attachment step of drying the inserted silicone tube and attaching it to the inner clamping piece. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2018-68530 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in the method for manufacturing hair clips in Patent Document 1, the mixed solution in which the anti-slip member is immersed is a solution consisting of absolute ethanol and benzene, which has a pungent odor that stings the nose, making it difficult to work for long periods in the immersion process, and there are problems in that the odor remains even after the application process in which the member is dried and applied.

[0006] In view of these problems, the present invention aims to provide a method for manufacturing a hair clip that allows the anti-slip member to adhere closely to the clamping piece, is easy to attach, and yet reduces odors in the manufacturing process for the hair clip and in the hair clip manufactured by that manufacturing process. [Means for solving the problem]

[0007] [1] That is, the present invention provides a pair of clamping pieces, each consisting of an outer clamping piece for clamping hair and an inner clamping piece connected to one end of the outer clamping piece, and a silicone hair clip inserted through the inner clamping piece. A method for manufacturing a hair clip having a cylindrical anti-slip member made of polyethylene, and denatured ethanol containing ethanol and methanol. , at least cyclohexa cyclohexane or methylcyclohexane Contains naphthenic hydrocarbons At atmospheric pressure The initial boiling point and end point of the distillation are 80 to 120°C. Immersion process in a mixed solution of volatile oils The process and mixture The inner clamping piece is inserted into the non-slip member which has been immersed in a solution to expand it. and drying the inserted anti-slip member to attach it to the inner clamping piece. This is a method for manufacturing a hair clip, which is characterized by including an attachment step.

[0008] [2] The method for producing the hair clip according to [1] above, wherein the denatured ethanol further contains 2-propanol.

[0011] [ 3] The method for producing a hair clip according to [1] or [2] above, wherein the weight ratio of the denatured ethanol to the volatile oil in the mixed solution is denatured ethanol:volatile oil=6:4 to 4:6. [Effects of the Invention]

[0012] According to the method for manufacturing a hair clip of the present invention, the anti-slip member adheres well to the handle and can be easily attached, while the hair clip manufacturing process and the hair clip manufactured by that manufacturing process can reduce odor. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a perspective view of a hair clip according to a first embodiment of the present invention. [Figure 2] 2 is an end view of the hair clip according to the first embodiment of the present invention taken along line AA in FIG. 1. FIG. [Figure 3] 1 is a diagram showing a process of attaching an anti-slip element to a hair clip according to a first embodiment of the present invention. FIG. [Figure 4] FIG. 10 is a perspective view of a hair clip according to a second embodiment of the present invention. [Figure 5] FIG. 10 is a perspective view of a hair clip according to a third embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, a method for manufacturing a hair clip and a hair clip according to an embodiment of the present invention will be described with reference to the drawings.

[0015] As shown in Figures 1 and 2, the hair clip according to the first embodiment of the present invention is mainly composed of a pair of clamping pieces 10, each consisting of a plate-shaped outer clamping piece 20 that clamps the hair and a plate-shaped inner clamping piece 30 connected to one end of the outer clamping piece 20, and an anti-slip member 40 that is attached so as to fit at least the outer shape of the inner clamping piece 30.

[0016] The pair of clamping pieces 10 is composed of an outer clamping piece 20 located on the outside and an inner clamping piece 30 located on the scalp side when the hair clip is attached to the hair.

[0017] The outer clamping piece 20 and the inner clamping piece 30 are formed, for example, from stainless steel or nickel-plated iron, and one end of the outer clamping piece 20 is connected to one end of the inner clamping piece 30 via a connecting portion 11.As shown in Figures 3(b)(c) and 4, when the outer clamping piece 20 and the inner clamping piece 30 are spaced apart before use, the overall shape is approximately "L" shaped when viewed from the side.

[0018] Furthermore, when in use, by pressing the tip of the outer clamping piece 20 toward the inner clamping piece 30 while supporting the connecting portion 11, the elastic action of the outer clamping piece 20 causes the outer clamping piece 20 to bend along the inner clamping piece 30 side, so that hair can be clamped between the outer clamping piece 20 and the inner clamping piece 30.

[0019] More specifically, the outer clamping piece 20 is formed, for example, in an oval or substantially elliptical shape, with a gap 12 cut out substantially at the center to form a ring shape, and the long inner clamping piece 30 is arranged along the longitudinal direction of the outer clamping piece 20 via a connecting portion 11 at substantially the center of the gap 12. The outer clamping piece 20 is curved so as to be convex downward toward the inner clamping piece 30 in a side view, and a folded portion 32 is formed by folding the substantially central portion of the inner clamping piece 30 in the longitudinal direction multiple times in a mountain shape or zigzag shape, and is connected to the outer clamping piece 20 at a base end 31 of the inner clamping piece 30.

[0020] The outer surface of the outer clamping piece 20 may be decorated with leather, synthetic resin, etc. The inner clamping piece 30 may also be provided with a long hole 33 along the longitudinal direction.

[0021] Furthermore, a tubular anti-slip member 40 is attached to at least the inner clamping piece 30 so as to conform to the outer shape of the inner clamping piece 30. For example, as shown in Fig. 2, which is a cross-sectional view taken along the short side of Fig. 1, when the inner clamping piece 30 is formed into a horizontally long rectangular shape in cross section, the anti-slip member 40 is attached to the inner clamping piece 30 so as to conform to the rectangular shape. Here, "attached to the inner clamping piece 30 so as to conform to the outer shape" does not necessarily mean that the anti-slip member 40 is attached to the inner clamping piece 30 in complete contact, but also means that the anti-slip member 40 is attached with a small space between the inner clamping piece 30 and the member.

[0022] The non-slip member 40 is cylindrical and inserted through the inner clamping piece 30 to cover the inner clamping piece 30, and is shorter than the longitudinal dimension of the clamping piece 10. The non-slip member 40 is preferably made of silicone for its durability and the strength of friction with hair during use. When manufacturing the hair clip, the non-slip member 40 is first immersed in a mixed solution 50 of denatured ethanol containing ethanol and methanol and volatile oil containing naphthenic hydrocarbons to expand it. The non-slip member 40, which has expanded by immersion in the mixed solution 50, is then inserted through the inner clamping piece 30, dried, and shrunk, thereby being attached to the inner clamping piece 30. In this embodiment, the non-slip member 40 is colorless and transparent or translucent. However, in other embodiments, the non-slip member 40 may be black, or a corporate logo or message may be printed on the surface of the non-slip member 40.

[0023] More specifically, as shown in FIG. 3( a), multiple anti-slip members 40 cut to a length shorter than the longitudinal dimension of the inner clamping piece 30 are placed in a metal drainer basket 60 and immersed in a mixed solution 50 consisting of denatured ethanol containing ethanol and methanol and volatile oil containing naphthenic hydrocarbons for 2 to 3 minutes. The volume of the anti-slip members 40 immersed in the mixed solution 50 expands by approximately 10 to 20%, allowing them to be smoothly inserted through the inner clamping piece 30 when both the outer clamping piece 20 and the inner clamping piece 30 are released, as shown in FIG. 3( b). Furthermore, since the anti-slip members 40 are slippery when immersed in the mixed solution 50, they can be easily inserted over the bent portion 32. Then, as shown in FIG. 3( c), the inserted anti-slip members 40 are naturally dried or hot-air dried for approximately 5 to 6 minutes with both clamping pieces released, causing them to shrink back to their original size and adhere to the outer shape of the inner clamping piece 30. When both clamping pieces are closed, the inner clamping piece 30 fitted with the anti-slip member 40 partially overlaps the outer clamping piece 20 in a side view, as shown in Figure 3(d), allowing the hair to be securely clamped.

[0024] The silicone used for the non-slip member 40 may be, for example, KE-561-U (manufactured by Shin-Etsu Chemical Co., Ltd.). The dimensions of the non-slip member 40 are preferably an outer diameter of 4 to 6 mm and an inner diameter of 2 to 4 mm. By using silicone as the material for the non-slip member 40, it has an excellent non-slip effect on the hair due to the frictional force with the hair.

[0025] The mixed solution 50 for expanding the anti-slip member 40 in the present invention is a mixture of denatured ethanol containing ethanol and methanol and volatile oil containing naphthenic hydrocarbons, and is liquid at room temperature of 20 to 30°C. Among these, denatured ethanol is ethanol containing not only ethanol but also other alcohols such as methanol and 2-propanol. Specifically, the denatured ethanol preferably contains 60 to 90 wt% ethanol, 5 to 15 wt% methanol, and 0.5 to 5 wt% 2-propanol. The volatile oil is a liquid oil containing naphthenic hydrocarbons, which are saturated hydrocarbons with at least five or six-membered rings, and may also contain other saturated hydrocarbons. Specifically, naphthenic hydrocarbons such as cyclohexane and methylcyclohexane are preferred, and these can be used alone or in combination. Saturated hydrocarbons other than naphthenic hydrocarbons include heptane, 3-methylhexane, and octane. The volatile oil preferably contains 20 to 50% by weight of naphthenic hydrocarbons such as cyclohexane or methylcyclohexane. In addition, in the process of drying and shrinking the anti-slip member 40 immersed in the mixed solution 50 to attach it to the inner clamping piece 30, the initial boiling point to the end point of the distillation of the volatile oil under atmospheric pressure is preferably 80 to 120°C, in order to use inexpensive natural drying rather than expensive hot air drying. Furthermore, the weight ratio of the denatured ethanol to the volatile oil in the mixed solution 50 is preferably denatured ethanol:volatile oil = 6:4 to 4:6, and more preferably denatured ethanol:volatile oil = 5.5:4.5 to 4.5:5.5. By using the components and proportions of the mixed solution 50 as described above, the anti-slip member 40 expands by about 10% to 20% in the immersion step of immersing the anti-slip member 40 in the mixed solution 50, and it is possible to prevent the anti-slip member 40 from becoming brittle after immersion. Furthermore, in the insertion step of inserting the inner clamping piece 30 into the anti-slip member 40, attachment to the inner clamping piece 30 is facilitated, and even after being attached to the clamping piece 10, adhesion is ensured and the anti-slip member is unlikely to peel off.

[0026] A hair clip according to a second embodiment of the present invention will be described with reference to Figure 4. The hair clip in this second embodiment mainly comprises an outer clamping piece 20 and an inner clamping piece 30, which are integrally formed via a connecting part 11 that is folded back approximately 180 degrees at one end of the outer clamping piece 20 and connected to the inner clamping piece 30.

[0027] A hair clip according to a third embodiment of the present invention will be described with reference to Figure 5. The hair clip according to the third embodiment mainly comprises an outer clamping piece 20 and an inner clamping piece 30, and the inner clamping piece 30 is attached to the outer clamping piece 20 via a connecting part 11.

[0028] More specifically, as shown in FIG. 5, the outer clamping piece 20 has a side wall 22 at one end that constitutes the connecting portion 11, and two opposing pressing portions 24 at the other end, each of which has an engaging portion 23 extending toward each other, and has a decorative portion 21 at an outer position of the outer clamping piece 20.

[0029] The inner clamping piece 30 has at one end a protrusion 34 that is pivotally supported on the side wall 22, and at the other end an engaged portion 35 for engaging the engaging portion 23. The decorative portion 21 is made of a rectangular plate-shaped synthetic resin material that covers the outer clamping piece 20, but it may also be made of artificial flowers, precious metals, other ornaments, etc.

[0030] Although the present invention has been described above as an embodiment, it is not limited to this embodiment and modifications are possible without departing from the spirit of the invention. For example, the anti-slip member 40 may be covered with multiple silicone tubes cut shorter than the longitudinal dimension of the inner clamping piece 30. In this case, the tubes may be covered with a predetermined distance between them, or may be partially overlapped. Note that when a range is indicated in the description using the notation "~", it includes both the upper and lower limits. [Example]

[0031] The following is a detailed description of the immersion step in which the non-slip member 40 is immersed in the mixed solution 50 of denatured ethanol and volatile oil in the method for manufacturing a hair clip of the present invention. Note that the present invention is not limited to the following examples.

[0032] Example 1 At room temperature of 25°C, 50 g of denatured ethanol (manufactured by Kishida Chemical Industry Co., Ltd., product name: denatured ethanol) containing 85 wt% ethanol, 13 wt% methanol, and 1.1 wt% 2-propanol was mixed and stirred with 50 g of volatile oil (manufactured by ENEOS Corporation, product name: CS volatile oil) containing 15 wt% cyclohexane, 9 wt% methylcyclohexane, 10 wt% heptane, 3 wt% 3-methylhexane, and 3 wt% octane, to obtain a total of 100 g of mixed solution 50.

[0033] <Comparative Example 1> At room temperature of 25° C., a mixed solution similar to that in Patent Document 1 was prepared. That is, 50 g of absolute ethanol (manufactured by Kenei Pharmaceutical Co., Ltd., product name: absolute ethanol) and 50 g of benzine (manufactured by Takabishi Chemical Co., Ltd., product name: special benzine) were mixed and stirred to obtain a total of 100 g of mixed solution.

[0034] An immersion step was then performed in which an anti-slip member 40 with an outer diameter of 4.5 mm, an inner diameter of 3.5 mm, and a length of 4 cm was immersed in the mixed solution of Example 1 and Comparative Example 1 for 3 minutes. An insertion step was then performed in which the inner clamping piece 30 was inserted into the anti-slip member 40. Furthermore, the inserted anti-slip member 40 was allowed to air dry for about 15 minutes, and then an attachment step was performed in which the anti-slip member 40 was attached to the inner clamping piece 30. Various evaluations were performed during these steps.

[0035] [Irritating odor during the soaking process] Regarding the irritating odor during the immersion process, the odor of the mixed solution was checked sensorily. Those with no odor were rated as ◎, those with almost no odor were rated as ○, those with some odor were rated as △, and those with a stinging odor were rated as ×. Of these, ◎ and ○ were judged as good, and △ and × were judged as bad.

[0036] [Expansion of the anti-slip material during the immersion process] The expansion of the non-slip member 40 during the immersion process was visually inspected after the immersion process. The non-slip member 40 containing the mixed solution and expanding well was evaluated as ⊚, the expanded member was evaluated as ◯, the member that expanded little was evaluated as △, and the member that expanded very little was evaluated as ×. Of these, ⊚ and ◯ were judged as good, and △ and × were judged as bad.

[0037] [Workability in the insertion process] In the insertion step, the workability when inserting the inner clamping piece 30 into the non-slip member 40 was evaluated. The non-slip member 40 in which the inner clamping piece 30 was easily inserted was evaluated as ◎, the non-slip member 40 in which it was easy to insert was evaluated as ○, the non-slip member 40 in which it was difficult to insert was evaluated as △, and the non-slip member 40 in which it could not be inserted was evaluated as ×. Of these, ◎ and ○ were judged as good, and △ and × were judged as bad.

[0038] [Adhesion to inner clamping piece after adhesion process] The adhesion of the anti-slip member 40 to the inner clamping piece 30 after the application process was evaluated based on the state when an attempt was made to pull out the anti-slip member 40 with a specified force. The anti-slip member 40 that did not move at all from the inner clamping piece 30 was evaluated as ⊚, the anti-slip member that hardly moved was evaluated as ◯, the anti-slip member that moved slightly was evaluated as △, and the anti-slip member that moved was evaluated as ×. Of these, ⊚ and ◯ were judged as good, and △ and × were judged as bad.

[0039] [Odor after the application process] Regarding odor after the application process, the odor of the anti-slip member 40 after the application process was checked sensorily. Those with no odor were rated as ◎, those with almost no odor were rated as ○, those with some odor were rated as △, and those with a stinging odor were rated as ×. Of these, ◎ and ○ were judged as good, and △ and × were judged as bad.

[0040] The composition of the mixed solutions of each Example and Comparative Example and the results of each performance evaluation carried out using these are shown in Table 1. In each performance evaluation, only mixed solutions with a ◎ or ○, which indicate good performance, were judged to be good mixed solutions.

[0041] [Table 1]

[0042] From the above results, it was found that in Comparative Example 1, a mixed solution of absolute ethanol and benzine was used, and therefore the mixed solution had a strong odor during the immersion step, making it difficult to work for a long time, and the odor originating from the mixed solution was noticeable even after the application step, whereas in Example 1, a mixed solution of denatured ethanol containing ethanol and methanol and volatile oil containing naphthenic hydrocarbons was used, and therefore the mixed solution had almost no odor during the immersion step, making it possible to work for a relatively long time, and the odor originating from the mixed solution was hardly noticeable after the application step. Therefore, it was found that by using a mixed solution of denatured ethanol containing ethanol and methanol and volatile oil containing naphthenic hydrocarbons in the immersion step, the adhesion of the anti-slip member 40 to the inner clamping piece 30 was high, making it easy to attach, while reducing the odor in the hair clip manufacturing process and in the hair clip manufactured by that manufacturing process. [Explanation of symbols]

[0043] 10...Holding piece 20...Outer clamping piece 30...Inner clamping piece 40. Anti-slip material 50...solution

Claims

1. A method for manufacturing a hair clip comprising a pair of clamping pieces, each of which comprises an outer clamping piece for clamping hair and an inner clamping piece connected to one end of the outer clamping piece, and a cylindrical silicone non-slip member inserted through the inner clamping piece, an immersion step of immersing the non-slip member in a mixed solution of denatured ethanol containing ethanol and methanol, and volatile oil containing a naphthenic hydrocarbon, which is at least one of cyclohexane and methylcyclohexane, and having an initial boiling point to an end point of 80 to 120°C when distilled under atmospheric pressure; an insertion step of inserting the inner clamping piece into the non-slip member expanded by immersing it in the mixed solution; a step of drying the inserted anti-slip member and attaching it to the inner clamping piece, said method comprising the steps of:

2. 2. The method for manufacturing a hair clip according to claim 1, wherein the denatured ethanol further contains 2-propanol.

3. A method for manufacturing a hair clip as described in claim 1 or claim 2, characterized in that the weight ratio of the denatured ethanol to the volatile oil in the mixed solution is 6:4 to 4:6.

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