Hair bundle and method for producing hair bundle

Abstract

Provided are a hair bundle having a hue close to that of human hair, and a method for producing the hair bundle.　This hair bundle is formed by bundling a plurality of dyed synthetic fibers for hair, wherein a deviation L1 of an L value when 10 adjacent points are measured along a longitudinal direction that is the fiber direction of the hair bundle is 0.90 or more at a measurement diameter of 3 mm using a spectrophotometer, and a deviation L2 of the L value when 10 adjacent points are measured along a direction transverse to the longitudinal direction of the hair bundle is 0.90 or more at a measurement diameter of 3 mm using a spectrophotometer.

Description

Hair bundle and method for manufacturing hair bundle

[0001] The present invention relates to a hair bundle and a method for manufacturing the hair bundle.

[0002] The unique depth of color in human hair is due to the fact that multiple colors exist within a single hair, and that hairs of various slightly different colors are mixed together, and that the overall color tends to become lighter from the roots to the tips.

[0003] Patent Document 1 discloses hair for a wig, which is made by randomly mixing multiple hairs of different lengths and colors together with one end of the root aligned, and then bundling the hairs together with the tips of the hairs made uneven by combing.

[0004] Japanese Patent Application Laid-Open No. 2002-275719

[0005] According to the inventor's investigations, as disclosed in Patent Document 1, blending multiple strands of hair with different color tones can produce a color that is somewhat similar to that of human hair, but further improvement is required.

[0006] The present invention has been made in consideration of the above-mentioned problems, and aims to provide a hair bundle having a color similar to that of human hair, and a method for manufacturing such a hair bundle.

[0007] As a result of extensive research into solving the above problems, the inventors discovered that a hair bundle having a color similar to that of human hair can be obtained by forming a pattern by textile printing on a substantially flat bundle in which multiple synthetic hair fibers are arranged in parallel, and that the obtained hair bundle can be suitably specified by using the deviation in the L value as an index of the color of the hair bundle, which led to the completion of the present invention.

[0008] Aspects of the present invention relate to the following hair bundle and method for manufacturing the hair bundle.

[0009] [1] A hair bundle formed by bundling a plurality of dyed synthetic hair fibers, wherein the L value deviation L1 when measuring adjacent 10 points along the vertical direction (i.e., the fiber direction) of the hair bundle using a spectrophotometer with a measurement diameter of φ3 mm is 0.90 or more, and the L value deviation L2 when measuring adjacent 10 points along the horizontal direction relative to the vertical direction of the hair bundle using a spectrophotometer with a measurement diameter of φ3 mm is 0.90 or more. [2] The hair bundle according to [1], wherein L1 is 5.0 or less. [3] The hair bundle according to [1] or [2], wherein L2 is 5.0 or less. [4] The hair bundle according to any of [1] to [3], wherein the total lengths of the vertical portion where the L value in the vertical direction is measured and the horizontal portion where the L value in the horizontal direction is measured are each 30 mm. [5] The hair bundle according to any one of [1] to [4], wherein the difference between the maximum and minimum L values ​​out of 10 measured values ​​of the L value in the vertical direction is 3.2 or more. [6] The hair bundle according to any one of [1] to [5], wherein the synthetic fiber for hair is a fiber selected from the group consisting of polyester fiber, modacrylic fiber, acrylic fiber, vinyl chloride fiber, protein fiber, and polypropylene fiber. [7] A head accessory comprising the hair bundle according to any one of [1] to [6]. [8] The head accessory according to [7], wherein the head accessory is a hair wig, toupee, weaving, hair extension, braided hair, hair accessory, or doll hair. [9] A method for manufacturing a hair bundle, comprising: a fixed part forming step, which includes forming a first fixed part on one of the upper and lower sides of a substantially planar bundle in which a plurality of synthetic hair fibers arranged vertically and aligned in parallel horizontally, so that the fibers constituting the side part cannot move, and forming a second fixed part on the other side so that the fibers constituting the side part can move; a sag removal step, which includes placing the substantially planar bundle on which the fixed part has been formed on a printing table, and then removing sag from the fibers constituting the substantially planar bundle; a printing step, which includes forming a pattern on the substantially planar bundle from which the sag has been removed; and a hair bundle forming step, which includes removing the first fixed part and the second fixed part from the substantially planar bundle on which the pattern has been formed, and then bundling the substantially planar bundles to form a hair bundle.

[10] The manufacturing method according to [9], wherein the first fastening portion in the fastening portion forming step is formed by sewing together a substantially planar bundled portion constituting one of the sides and a fabric arranged on the back side of the bundled portion.

[11] The manufacturing method according to [9] or

[10] , wherein the second fastening portion in the fastening portion forming step is formed by intermittently sewing together a substantially planar bundled portion constituting the other side.

[0010] According to the present invention, it is possible to provide a hair bundle having a color similar to that of human hair, and a method for manufacturing the hair bundle.

[0011] Fig. 1 is a front view showing an embodiment of a hair bundle according to the present invention; Fig. 2 is a front view showing an embodiment of a substantially planar hair bundle having a fixing portion formed thereon, in a method for manufacturing a hair bundle according to the present invention; Fig. 3 is a front view showing an embodiment of a substantially planar hair bundle having a pattern formed thereon, in a method for manufacturing a hair bundle according to the present invention;

[0012] <Hair Bundle> The hair bundle according to an embodiment of the present invention is a hair bundle formed by bundling together a plurality of dyed synthetic fibers for hair, wherein the L value deviation L1 is 0.90 or more when measuring 10 adjacent points along the vertical direction, which is the fiber direction of the hair bundle, using a spectrophotometer with a measurement diameter of φ3 mm, and the L value deviation L2 is 0.90 or more when measuring 10 adjacent points along the horizontal direction relative to the vertical direction of the hair bundle using a spectrophotometer with a measurement diameter of φ3 mm.

[0013] The hair bundle according to this embodiment has a color close to that of human hair because the L value deviations L1 and L2 fall within a specific range. Human hair with such a color can be obtained by employing the manufacturing method described below.

[0014] The dyeing method for dyed synthetic hair fibers is not particularly limited, but synthetic hair fibers dyed by textile printing are preferred from the viewpoint of forming patterns. The number of synthetic hair fibers is not particularly limited, and may be set appropriately between a few and tens of thousands depending on the application.

[0015] The color of the synthetic hair fiber is not particularly limited, and various colors can be appropriately selected depending on the region or ethnicity. Examples of colors of the synthetic hair fiber include white, light brown, chestnut, gold, silver, gray, reddish brown, black, and brown.

[0016] In the present invention, the indicators of the color of the hair bundle are the deviation L1 of the L value when measuring 10 adjacent points along the vertical direction, which is the fiber direction of the hair bundle, using a spectrophotometer with a measurement diameter of φ3 mm, and the deviation L2 of the L value when measuring 10 adjacent points along the horizontal direction relative to the vertical direction of the hair bundle using a spectrophotometer with a measurement diameter of φ3 mm.

[0017] In order to make the hair bundle have a color similar to that of human hair, the lower limit of L1 is preferably 1.2 or more, more preferably 1.5 or more, and the upper limit of L1 is preferably 5.0 or less, more preferably 4.5 or less.

[0018] In order to make the hair bundle have a color similar to that of human hair, the lower limit of L2 is preferably 1.2 or more, more preferably 1.5 or more, and the upper limit of L2 is preferably 5.0 or less, more preferably 4.5 or less.

[0019] In measuring the L value using a spectrophotometer, it is preferable that the overall length of the vertical portion where the vertical L value is measured and the overall length of the horizontal portion where the horizontal L value is measured are each 30 mm.

[0020] In order for the hair bundle to have a color similar to that of human hair, it is preferable that the difference between the maximum and minimum L values ​​of the 10 points measured as the L value in the vertical direction is 3.2 or more, and more preferably 3.5 or more.

[0021] Figure 1 is a front view showing one embodiment of a hair bundle according to the present invention. In Figure 1, hair bundle 1 is shown in grayscale, but in reality it is a color image showing a brown hair bundle. Hair bundle 1 has the characteristics of human hair, with multiple colors present within a single hair and a mixture of hairs of various slightly different colors. For hair bundle 1 shown in Figure 1, the L value deviations L1 and L2 fall within the preferred ranges described above.

[0022] The type of synthetic fiber for hair is not particularly limited, and examples thereof include polyester fiber, modacrylic fiber, acrylic fiber, vinyl chloride fiber, protein fiber, polypropylene fiber, etc. Among these, polyester fiber is preferred. The synthetic fiber for hair may be used alone or in combination of two or more types.

[0023] <Hair Bundle Manufacturing Method> A hair bundle manufacturing method according to an embodiment of the present invention includes a fixed part forming step, which includes forming a first fixed part on one of the upper and lower sides of a substantially planar bundle in which a plurality of synthetic hair fibers arranged vertically and aligned in parallel horizontally, so that the fibers constituting the side part cannot move, and forming a second fixed part on the other side so that the fibers constituting the side part can move; a sag removal step, which includes placing the substantially planar bundle on which the fixed part has been formed, on a printing table, and then removing sag from the fibers constituting the substantially planar bundle; a printing step, which includes forming a pattern on the substantially planar bundle from which the sag has been removed; and a hair bundle forming step, which includes removing the first fixed part and the second fixed part from the substantially planar bundle on which the pattern has been formed, and then bundling the substantially planar bundles to form a hair bundle.

[0024] By the above-described method for manufacturing a hair bundle, the above-described hair bundle according to the embodiment of the present invention having a color similar to that of human hair can be suitably manufactured.

[0025] (Fixed part forming step) In the fixed part forming step, a first fixed part and a second fixed part are provided on a substantially planar bundle of synthetic hair fibers to facilitate the later-described textile printing. The type of synthetic hair fiber is the same as the type of synthetic hair fiber described above in the "Hair Bundle" section.

[0026] The first fixing portion is provided on one of the upper and lower side portions of the substantially planar bundle so as to immobilize the fibers that make up the side portion. The first fixing portion is not particularly limited as long as it is configured to immobilize the fibers that make up the side portion. The first fixing portion is preferably formed by sewing together the substantially planar bundle portion that makes up the one side portion and a fabric arranged on the back side thereof.

[0027] The second fixing portion is provided on the other of the substantially planar upper and lower side portions of the bundle so as to allow the fibers constituting the side portion to move. The second fixing portion is not particularly limited as long as it allows the fibers constituting the side portion to move. The second fixing portion is preferably formed by intermittently sewing the substantially planar bundle portion constituting the other side portion.

[0028] Figure 2 is a front view showing one embodiment of a substantially planar bundle on which the fixing parts are formed, with a first fixing part 10 and a second fixing part 20 provided on the upper and lower sides of the substantially planar bundle 2, respectively. Note that in Figure 2, the position at which the first fixing part 10 is provided is not particularly limited as long as it is a side part located on the upper side of the bundle. From the viewpoint of ensuring a wide printing area, as described below, the position at which the first fixing part 10 is provided is preferably the upper edge part of the bundle, as shown in Figure 2. Note that in Figure 2, the position at which the second fixing part 20 is provided is not particularly limited as long as it is a side part located on the lower side of the bundle.

[0029] (Slack Removal Step) The slack removal step involves placing the substantially planar bundle on which the fixing part has been formed on a printing table, and then removing any slack from the fibers constituting the substantially planar bundle. For example, in Figure 2, the slack from the fibers constituting the bundle can be easily removed by combing the fibers constituting the bundle several times from the first fixing part 10 to the second fixing part 20.

[0030] (Textile Printing Process) The textile printing process involves forming a pattern by textile printing on the above-mentioned bundle in a substantially flat state from which flexing has been removed. In this specification, the term "pattern" refers to an irregular pattern formed on the above-mentioned bundle by combining vertical, horizontal, or diagonal straight or curved lines. When such a pattern is formed, the numerous fibers constituting the bundle have portions with different dyeing degrees within a single fiber, or have portions that are dyed and portions that are not dyed. This makes it possible to reproduce the characteristic of human hair, in which multiple colors exist within a single hair. Furthermore, when the above-mentioned bundles on which such a pattern has been formed are bundled together to form a hair bundle, it is possible to reproduce the characteristic of human hair, in which various hairs with subtle differences in color are mixed. From the above definition, pattern patterns having regular patterns, such as stripes and borders with multiple identical widths, and checks and polka dots with the same size, are not included in the pattern according to this embodiment.

[0031] Textile printing is a dyeing method in which a coloring composition is applied to a substrate to form a pattern, and a colorant such as a dye is dyed or fixed onto the substrate to produce a patterned dyed product. Industrial methods include screen printing using a printing plate, roller printing, transfer printing using transfer paper, and inkjet printing without plate making.

[0032] Fig. 3 is a front view showing one embodiment of a substantially planar bundle on which a pattern has been formed by screen printing. While Fig. 3 is shown entirely in grayscale, in reality, the substantially planar bundle 2 is a light brown image, and the pattern 30 is a color image showing browns. As shown in Fig. 3, the pattern 30 is preferably an irregular pattern formed by combining vertical, horizontal, or diagonal straight or curved lines.

[0033] (Hair bundle forming process) The hair bundle forming process includes removing the first fixing portion and the second fixing portion from the substantially planar bundle on which a pattern is formed, and then bundling the substantially planar bundle to form a hair bundle.

[0034] Head ornament products include the above-mentioned hair bundles. Examples of head ornament products include hair wigs, hairpieces, weaving, hair extensions, braided hair, hair accessories, and doll hair.

[0035] The present invention will be described in more detail below based on examples and comparative examples, but the present invention is not limited to the following examples.

[0036] (Synthetic Fibers for Hair) In the following comparative examples, the following fibers 1 to 6 were used as monochromatic yarns of synthetic fibers for hair. Fiber 1: Polyester fiber, single fiber fineness 65 dtex, Kaneka Corporation's Futura, color #30 Fiber 2: Polyester fiber, single fiber fineness 65 dtex, Kaneka Corporation's Futura, color #27 Fiber 3: Polyester fiber, single fiber fineness 65 dtex, Kaneka Corporation's Futura, color #340 Fiber 4: Polyester fiber, single fiber fineness 65 dtex, Kaneka Corporation's Futura, color #8 Fiber 5: Polyester fiber, single fiber fineness 65 dtex, Kaneka Corporation's Futura, color #6 Fiber 6: Polyester fiber, single fiber fineness 65 dtex, Kaneka Corporation's Futura, color #60

[0037] <Hair Bundle Manufacturing Examples> (Comparative Example 1) Approximately 150 fibers 1 cut to approximately 40 cm were bundled together to produce a monochromatic hair bundle. (Comparative Example 2) Approximately 150 fibers 2 cut to approximately 40 cm were bundled together to produce a monochromatic hair bundle. (Comparative Example 3) Approximately 150 fibers 3 cut to approximately 40 cm were bundled together to produce a monochromatic hair bundle. (Comparative Example 4) Approximately 150 fibers 4 cut to approximately 40 cm were bundled together to produce a monochromatic hair bundle. (Comparative Example 5) Approximately 150 fibers 5 cut to approximately 40 cm were bundled together to produce a monochromatic hair bundle. (Comparative Example 6) Approximately 150 fibers 6 cut to approximately 40 cm were bundled together to produce a monochromatic hair bundle.

[0038] (Comparative Example 7) Fiber 1, Fiber 4, and Fiber 5, each cut to approximately 40 cm, were prepared, and the fibers were uniformly mixed in a ratio of Fiber 1:Fiber 4:Fiber 5 = 40%:30%:30% relative to the total number of fibers (approximately 150), to produce a three-color mixed hair bundle.

[0039] (Comparative Example 8) Fiber 2, fiber 4, and fiber 5, each cut to approximately 40 cm, were prepared, and the fibers were uniformly mixed in a ratio of fiber 2: fiber 4: fiber 5 = 40%: 30%: 30% of the total number of fibers (approximately 150), to produce a three-color mixed hair bundle.

[0040] (Comparative Example 9) Fiber 3 and fiber 6, each cut to approximately 40 cm, were prepared, and the fibers were uniformly mixed in a ratio of fiber 3:fiber 6 = 60%:40% relative to the total number of fibers (approximately 150), to produce a two-color mixed hair bundle.

[0041] (Reference Example 1) For comparison with human hair, "SAGA BRAZILIAN REMY 100% HUMAN HAIR YAKI14" (product name) was used.

[0042] Example 1 The hair bundle of Example 1 was produced according to the following steps 01 to 10. 01. Fiber 1 was cut into approximately 50 cm lengths, and approximately 150 strands were measured out. 02. Using a triple-joint sewing machine for hair product processing, one end of the measured fibers was firmly sewn to form a string curtain so that the fibers were aligned parallel and uniformly without gaps. The length in the fiber direction was adjusted to 50 cm. 03. The sample processed in step 02 was placed on a nonwoven fabric measuring 60 cm long x 60 cm wide, with the sample positioned in the center of the nonwoven fabric, and a comb was used to straighten the hair. 04. The other end of the sample processed in step 02 (the end side) that was not sewn in step 02 was sewn in place with a single-needle sewing machine at a position 3 cm from the end. Instead of firmly sewing like in step 02, the fiber bundle was loosely secured so that it could move in the fiber axis direction. 05. The sample processed in step 04 is moved to the printing table, and after straightening the pile using a comb or by hand, a printing screen with the pattern shown in Figure 3 is placed on it. 06. Mix the printing liquor. Mix 30g of 100% Kayalon Yellow Bron 2RS-S and 9g of 167% Disperse Dark Bron M-TS for 1kg of printing paste consisting of water, thickening polysaccharides, and preservatives. This is called Printing Liquor A. Mix 18g of Yellow BRLS, 1.2g of Disperse Yellow RGFL, and 6g of Dark Bron AS for 1kg of the above printing paste. This is called Liquor B. 07. Use a squeegee to transfer Printing Liquor A from above the printing screen to the fibers. At this time, the rubbing force of the squeegee is gradually reduced from top to bottom, creating a pseudo-gradation of shades from top to bottom. Then, printing solution B is transferred from the bottom of the printing screen to the fibers using a squeegee. At this time, the rubbing force of the squeegee is gradually reduced from bottom to top, creating a pseudo-gradation of shades from bottom to top. 08. After printing, the nonwoven fabric is air-dried for 5 minutes, then the dye is removed and steamed at 130°C for 30 minutes to fix the dye to the fibers. 09. After reduction washing for 30 minutes in water at a temperature of 90°C to 100°C, the fabric is dehydrated and dried at a temperature of 40°C to 50°C for 30 minutes.10. Cut the fibers to lengths of approximately 40 cm, removing any stitches, to create hair bundles.

[0043] Example 2 A hair bundle of Example 2 was produced in the same manner as in Example 1, except that Fiber 2 was used in Step 01.

[0044] Example 3 A hair bundle of Example 3 was produced in the same manner as in Example 1, except that Fiber 6 was used in Step 01.

[0045] <Evaluation> (Vertical color evaluation) For the obtained hair bundle, a spectrophotometer ("CM-2600D" manufactured by Konica Minolta Japan Inc.) was used to measure the L value, a value, and b value at 10 adjacent points within a 30 mm vertical portion along the vertical direction, which is the fiber direction of the hair bundle, with a measuring diameter of φ3 mm. Average values ​​and deviations were calculated based on the obtained measurements. The results are shown in Tables 1 to 5.

[0046] (Lateral color evaluation) For the obtained hair bundle, a spectrophotometer ("CM-2600D" manufactured by Konica Minolta Japan Inc.) was used to measure the L value, a value, and b value at 10 adjacent points within a 30 mm horizontal range along the horizontal direction of the hair bundle with a measuring diameter of φ3 mm. Average values ​​and deviations were calculated based on the obtained measurements. The results are shown in Tables 6 to 8.

[0047]

[0048]

[0049]

[0050]

[0051]

[0052]

[0053]

[0054]

[0055] From the results in Tables 1 to 8, it can be seen that when the vertical deviation L1 of the L value is 0.90 or more and the horizontal deviation L2 of the L value is 0.90 or more, the hair bundle has a color close to that of human hair.

[0056] 1 Hair bundle 2 Planar bundle 10 First fixing part 20 Second fixing part 30 Pattern

Claims

1. A tuft of synthetic fibers for hair, in which a plurality of dyed synthetic fibers for hair are bundled together, and when measured with a spectrophotometer at a measuring diameter of φ3 mm along the longitudinal direction which is the fiber direction of the tuft, the deviation L1 of the L value when measuring 10 adjacent points is 0.90 or more, and when measured with a spectrophotometer at a measuring diameter of φ3 mm along the transverse direction with respect to the longitudinal direction of the tuft, the deviation L2 of the L value when measuring 10 adjacent points is 0.90 or more.

2. The tuft of hair according to claim 1, wherein L1 is 5.0 or less.

3. The tuft of hair according to claim 1, wherein L2 is 5.0 or less.

4. The tuft of hair according to claim 1 or 2, wherein the total length of the longitudinal portion where the L value in the longitudinal direction is measured and the transverse portion where the L value in the transverse direction is measured is 30 mm respectively.

5. The tuft of hair according to claim 1 or 2, wherein the difference between the maximum value and the minimum value of the L value among the 10 points measured as the L value in the longitudinal direction is 3.2 or more.

6. The tuft of hair according to claim 1 or 2, wherein the synthetic fiber for hair is a fiber selected from the group consisting of polyester fiber, modacrylic fiber, acrylic fiber, vinyl chloride fiber, protein fiber, and polypropylene fiber.

7. A headdress product comprising the tuft of hair according to claim 1 or 2.

8. The headdress product according to claim 7, wherein the headdress product is a hair wig, a wig, a webbing, a hair extension, a blade hair, a hair accessory, or a doll hair.

9. A method for manufacturing a tuft of hair, comprising: a fixing portion forming step including forming a first fixing portion on one side portion of the upper side portion and the lower side portion of a substantially planar bundle in which a plurality of synthetic fibers for hair arranged in the longitudinal direction are arranged in parallel in the transverse direction so that the fibers constituting the side portion cannot move, and forming a second fixing portion on the other side portion so that the fibers constituting the side portion can move; a deflection removing step including placing the substantially planar bundle on which the fixing portion is formed on a printing table and then removing the deflection of the fibers constituting the substantially planar bundle; a printing step including forming a pattern on the substantially planar bundle from which the deflection has been removed; and a tuft forming step including removing the first fixing portion and the second fixing portion from the substantially planar bundle on which the pattern has been formed, and then bundling the substantially planar bundle to form a tuft of hair.

10. The manufacturing method according to claim 9, wherein the first fixing portion in the fixing portion forming step is formed by sewing a substantially planar bundle portion constituting the one side portion and a fabric disposed on the back side thereof.

11. The manufacturing method according to claim 9 or 10, wherein the second fixing portion in the fixing portion forming step is formed by intermittently sewing a substantially planar bundle portion constituting the other side portion.

Images