JP2022114800A - Manufacturing method of artificial hair, and artificial hair - Google Patents

Abstract

To provide a manufacturing method of artificial hair capable of imparting a curl with a desired curvature; and to provide artificial hair having a curl with a gentle curvature.SOLUTION: A manufacturing method of artificial hair having a fiber bundle 2 formed by bundling multiple fibers 3, in which a part of the fiber bundle 2 is extended with an arc curl, includes: a winding step for winding a part of the fiber bundle 2 in a coil or arc around a rod-like body; a heating step for heating the fiber bundle 2 wound around the outer periphery of the rod-like body; and a heat release step for releasing heat to room temperature from the fiber bundle 2 heated in the heating step. In the winding step, a winding angle of the fiber bundle 2 to the central axis of the rod-like body is adjusted so that a part of the fiber bundle 2 from which heat is released to the room temperature in the heat release step has a desired curvature.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to a method for producing artificial hair and artificial hair.

Conventionally, as a means for women to change their hairstyles, there is a method of attaching extensions to the user's own hair (for example, Patent Document 1).
Patent Literature 1 discloses a method for attaching extensions to the user's hair by inserting the user's own hair and extensions into a ring in opposite directions and crushing the ring.

JP-A-2004-156157

By the way, since many conventional extensions are close to straight hair, when worn on the user's hair, it gives an impression of straight hair, which may give an unnatural appearance. Therefore, many users often have the extensions attached to their own hair at a hair salon or the like, and have their hair curled with a curling iron or the like.
In the case of having the hair treated at a hair salon or the like, it is difficult for the user to immediately obtain a desired hair style at the desired time, and the cost for requesting the treatment is high.
However, there is a problem that it is difficult to obtain the desired appearance such as curls when the user attaches the extensions and performs the treatment by himself/herself.

Accordingly, an object of the present invention is to provide a method for producing artificial hair that imparts curls with a desired curvature, and artificial hair with gentle curvature curls.

One aspect of the present invention is a method for producing artificial hair having a fiber bundle in which a plurality of fibers are bundled, and a part of the fiber bundle extending in an arc-shaped curl, wherein a part of the fiber bundle around the rod-shaped body in a coil or arc shape, a heating step of heating the fiber bundle wound around the rod-shaped body, and the fiber bundle heated in the heating step to a room temperature, and in the winding step, the fiber bundle with respect to the central axis of the rod-shaped body so that a part of the fiber bundle that has been radiated to room temperature in the heat dissipation step has a desired curvature. A method for manufacturing artificial hair by adjusting the winding angle of the hair.

The term “coiled” as used herein includes not only a three-dimensional spiral shape but also a two-dimensional spiral shape.

According to this aspect, since the winding angle to the rod-shaped body is adjusted so as to obtain the desired curvature, the curl having the desired curvature can be imparted.

A preferable aspect is that the winding angle is 20 degrees or more and 40 degrees or less.

According to this aspect, soft and gentle curls can be formed.

In a preferred aspect, the fiber bundle is tied or adhered in a range from one end of the fiber bundle to 1/4 or less of the total length of the fiber bundle in a step prior to the winding step. It is to include a connecting step.

According to this aspect, since the fiber bundle is wound around the rod-shaped body while one end of the fiber bundle is connected, the curl can be given a three-dimensional effect.

One aspect of the present invention has a fiber bundle in which a plurality of fibers are bundled, the fiber bundle is connected at one end side and has a curl extending in an arc shape at the other end side, The artificial hair has a curvature radius of 0.1 inch or more and 2 inches or less.

According to this aspect, it is possible to impart a curl with a gentle curve.

According to the method for producing artificial hair of the present invention, it is possible to impart curls with a desired curve.
According to the artificial hair of the present invention, the fiber bundle can be curled with a gentle curve.

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows an example of the usage example of the artificial hair of 1st Embodiment of this invention. 2 is a front view of the fiber bundle of FIG. 1; FIG. 4 is a photograph of artificial hair using the fiber bundle of Example 3. FIG. 4 is a photograph of artificial hair using the fiber bundle of Example 4. FIG.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail.

The artificial hair 1 of the first embodiment of the present invention is a hair accessory, as shown in FIG. is. That is, the artificial hair 1 is so-called bulk hair, and is directly braided into the user's hair, or hooked on the user's own hair (cornrow) that has been braided so as to crawl over the scalp, using a needle or the like. You can enjoy various styles.

The artificial hair 1 has curls in which a plurality of fiber bundles 2 are vertically curved in a C-shape or J-shape from the top of the head to the temporal surface.
The artificial hair 1 has a plurality of fiber bundles 2 connected at one end side in the length direction via a connecting portion, and if necessary, the connecting portion is cut off and each fiber bundle 2 is attached to the hair or a braided portion. be able to.
Here, "one end side" means being on one end side of the central portion in the longitudinal direction.

As shown in FIG. 2, the fiber bundle 2 is a bundle of a plurality of fibers 3 and has a C-shaped, J-shaped, or spiral curl in part or all in the longitudinal direction.
The radius of curvature D1 of the curl of the fiber bundle 2 shown in FIG. 2 is preferably 0.1 inch (0.254 cm) or more and 2 inches (5.08 cm) or less.
The length L1 in the longitudinal direction Y of the fiber bundle 2 shown in FIG. 2 is preferably 2 inches (5.08 cm) or more and 70 inches (177.8 cm) or less.

The fiber 3 is filamentous and has a C-shaped or J-shaped curl in part or all of its length.

The fibers 3 are acrylic fibers such as modacrylic fibers, synthetic fibers such as vinyl chloride fibers, polyester fibers, polypropylene fibers, and polyamide fibers, protein fibers such as regenerated collagen fibers, human hair fibers and animal hair fibers. You can use natural fibers such as
Moreover, the fiber 3 may use together the above-described multiple fibers. For example, the fibers 3 may use a plurality of types of fibers with different thermal contraction rates.

The shape of the cross section orthogonal to the length direction of the fiber 3 is not particularly limited. The fibers 3 are, for example, polylobed such as trilobal, tetralobal, pentalobal, hexalobal, heptafolial, and octalobal, oval, circular, cocoon-shaped, star-shaped, horseshoe-shaped, C-shaped, and the like. A cross-sectional shape can be used.

In the case of synthetic fibers or protein fibers, the fineness of the fibers 3 is not particularly limited as long as it has the same size as human hair.

The connecting portion is a portion for collecting the fiber bundles 2, and is configured by known connecting means such as thread, string, adhesive tape, and adhesive.

Next, a method for manufacturing the artificial hair 1 of the present invention will be described.

The method for manufacturing the artificial hair 1 includes a fiber bundle forming step, a pretreatment step, a connecting step, a winding step, a heating step, a heat radiation step, and a removing step. The treatment process is carried out after the removal process.

The fiber bundle forming step is a step of cutting the fibers 3 to an arbitrary length, weighing them, and forming the fiber bundles 2 by combining the cut fibers 3 for each predetermined weight.
In the fiber bundle forming step, the fiber bundle 2 is divided into a plurality of pieces in the length direction as necessary.

The length of the fibers 3 to be cut at this time can be appropriately changed depending on the length of the artificial hair 1 to be produced, but is preferably 13 inches (33.02 cm) or more and 24 inches (60.96 cm) or less.
The weight of the formed fiber bundle 2 can be appropriately changed depending on the amount of artificial hair 1 to be produced, but from the viewpoint of stably bundling the fibers 3, it is preferably 5.5 g or more and 50 g or less, and 20 g or more and 40 g or less. is more preferable.

The pretreatment process is a process for imparting luster and luster to the fiber bundle 2 to facilitate convergence and suppress the generation of static electricity, and is mainly composed of an immersion process and a dehydration process.

The immersion step is a step of immersing the fiber bundle 2 in an aqueous solution of modified silicone and polyether dissolved in water for a predetermined time t1 in accordance with the desired style.

At this time, the predetermined time t1 is preferably 2 minutes or more and 10 minutes or less from the viewpoint of sufficiently permeating the fiber bundle 2 with the aqueous solution.
The aqueous solution used at this time preferably contains 2 g or more and 10 g or less of amino-modified silicone and 1 g or more and 8 g or less of polyether per 1 L of water.
As the modified silicone, for example, at least one modified silicone selected from the group consisting of amino-modified silicone, epoxy-modified silicone, carboxylic acid-modified silicone, and polyether-modified silicone can be used.
As the polyether, for example, a block copolymer of ethylene oxide and propylene oxide, a random copolymer of ethylene oxide and propylene oxide, or an alkyl ether of ethylene oxide and propylene oxide having a weight average molecular weight of about 15,000 can be used.
A water-based resin, silica-containing silicone oil, or the like may be added to the aqueous solution.

The dehydration step is a step of centrifugally dehydrating the immersed fiber bundle 2 to a predetermined moisture content.

At this time, the moisture content of the fiber bundle 2 is preferably 5% or more and 25% or less from the viewpoint of good tactile sensation and workability in the winding process.

The connecting step is a step of connecting a plurality of fiber bundles 2 by connecting portions.
Specifically, in the connecting step, a plurality of fiber bundles 2 are connected or a plurality of fiber bundles 2 are bonded in a bristle-like manner in a range of 1/4 or less of the total length of the fiber bundle 2 from one end of the fiber bundle 2. do.

The winding step is a step of winding the fiber bundle 2, one end of which is connected by a connecting portion, around a pipe (rod-shaped body) in a coil shape or an arc shape.
Specifically, in the winding process, a pipe is selected according to the target style shape, the tips of the fibers 3 of the pretreated fiber bundle 2 are fixed using rubber or nonwoven fabric, and the heat dissipation process is performed at room temperature. The winding angle of the fiber bundle 2 with respect to the central axis of the pipe is adjusted so that the curl of the fiber bundle 2 radiated with heat reaches a desired curvature.

The contour shape of the cross section of the pipe used at this time is not particularly limited. The outer shape of the pipe includes, for example, a circular shape, a polygonal shape, an elliptical shape, and an oval shape.
The diameter of the minimum inclusive circle of the pipe used at this time (the diameter if the outer shape of the pipe is circular) can be appropriately changed according to the target style shape, but it should be 1.4 inches (35 mm) or more. It is preferably 2 inches (55 mm) or less.
At this time, the winding angle (the angle with respect to the central axis of the pipe when the pipe is viewed from the side) is preferably 25 degrees or more and 30 degrees or less.
The method of winding the fiber bundle 2 around the pipe at this time can be appropriately changed depending on the target quality, and the fiber bundle 2 may be wound while being twisted or may be wound without being twisted.
Also, the pitch of the fiber bundle 2 may be changed according to the winding position of the pipe. For example, after winding with a narrow pitch, you may wind with a wide pitch.

The heating step is a step of placing the fiber bundle 2 fixed to the pipe in an oven and heating at a heating temperature T1 and a heating time t2.

The heating temperature T1 can be appropriately changed according to the target quality, but is preferably 40° C. or higher and 150° C. or lower, and more preferably 70° C. or higher and 100° C. or lower.
The heating time t2 can be appropriately changed according to the heating temperature and target quality, but from the viewpoint of stable quality, it is preferably 20 to 120 minutes, more preferably 40 to 80 minutes.

The heat radiation step is a step of cooling the fiber bundle 2 to room temperature after removing the fiber bundle 2 placed in the oven in the heating step from the oven.
The cooling method may be natural heat radiation, or cooling may be performed by applying cold air at a certain cooling rate, for example.

The removing step is a step of removing from the pipe the fiber bundle 2 that has been cooled to room temperature in the heat radiation step.

The post-processing step is a step of further processing the fiber bundle 2 removed in the removal step.
As a post-treatment step, for example, the fiber bundle 2 may be untied with a comb or the like, and air may be introduced into the fiber bundle 2 to add volume.
As a post-processing step, for example, after unraveling the fiber bundle 2, the fiber bundle 2 may be divided into a plurality of bundles, and the bundles may be woven (twisted).
As a post-treatment step, for example, after the fiber bundle 2 is removed from the pipe, it may be placed in an oven again and heated.
In this case, by heating at a heating temperature and a heating time that do not substantially cause heat shrinkage, the fiber bundle 2 can be made loose like straight hair, or by heating at a heating temperature and a heating time that cause heat shrinkage. The fiber bundle 2 can be thermally shrunk to increase its volume.
The term "substantially not thermally shrinkable" as used herein means that the thermal shrinkage rate of the fiber is 0.2% or less.
The "thermal shrinkage rate of fiber" as used herein is the thermal shrinkage rate between before the heating process and after the heat radiation process in the unprocessed fiber material, and the thermal shrinkage rate of the fiber (%) = {(before the heating process length)−(length after heat dissipation process)}/(length before heating process)×100. The same shall apply hereinafter. That is, the "thermal shrinkage rate of fiber" is the shrinkage rate specific to the fiber.

According to the method for manufacturing the artificial hair 1 of the present embodiment, it is possible to impart a curl having a desired curvature.

According to the artificial hair 1 of the present embodiment, it is easy to manufacture by the above-described manufacturing method, and can be curled with a desired curvature as compared with conventional ones.

In the above-described embodiment, the artificial hair is attached to the braided portion of the user's hair, but the present invention is not limited to this. Artificial hair may be attached to the cap member having braids that mimic the user's hair.

In the embodiment described above, the fiber bundle 2 is spirally wound around the pipe in the winding step, but the present invention is not limited to this. The fiber bundle 2 may be spirally wound around the pipe in the winding step.

In the above-described embodiment, the lengths of the fibers 3 constituting the fiber bundle 2 are all uniform and the same length, but the present invention is not limited to this. The lengths of the fibers 3 forming the fiber bundle 2 may be partially different.

In the embodiment described above, the pretreated fiber bundle 2 is wound around the pipe in the winding step, but the present invention is not limited to this. The target to which the fiber bundle 2 is wound is not particularly limited as long as it is a rod-shaped body extending in a predetermined direction. For example, it may be a rod or a pin.

In the above-described embodiment, the fiber bundle 2 is spirally wound over the entire lengthwise curl, but the present invention is not limited to this. A curl may be provided partially in the length direction of the fiber bundle 2 . When the curl is formed partially, it is preferable that the fiber bundle 2 is provided on the base end side (connecting portion side) from the tip end portion.

As long as the above-described embodiments are within the technical scope of the present invention, each component can be freely replaced or added between the embodiments.

EXAMPLES The present invention will be specifically described below with reference to Examples, but the present invention is not limited to these Examples.

(Example 1)
First, as a fiber bundle forming step, each polyester fiber (hereinafter also referred to as PET fiber) was cut to 13 inches (hereinafter also referred to as cut length) and brushed to 14 inches. That is, 30 g of PET fiber cut into 13 inches was placed on a desk, and the bundled fibers were brushed on the brush to shift the tip of the hair and form a brush shape with a total length of 14 inches. to form a fiber bundle (hereinafter, the length of this fiber bundle is also referred to as a blend length).
Subsequently, as a pretreatment step, the fiber bundle was immersed in an aqueous solution of 2 to 10 g of amino-modified silicone and 1 to 8 g of polyether dissolved in 1 L of water for 5 minutes, and then dehydrated by centrifugation so that the water content was 15%.
Subsequently, as a winding step, the dehydrated fiber bundle was fixed to a pipe having a diameter of 2.2 inches (55 mm) with a rubber, and the fiber was entwined around the pipe.
Subsequently, as a heating step, the fiber bundle fixed to the pipe was placed in an oven together with the pipe and heated at 120° C. for 60 minutes.
Subsequently, as a heat radiation step, the fiber bundle fixed to the pipe was taken out from the oven, and then allowed to cool naturally until the temperature of the fiber bundle reached room temperature.
Subsequently, as a removal step, the fiber bundle cooled to room temperature was removed from the pipe, and the length of the fiber bundle (hereinafter, the length of this fiber bundle is also referred to as hair length) was measured.
The fiber bundle formed in this manner was designated as Example 1.

(Example 2)
In Example 1, in the fiber bundle formation step, PVC fibers and PET fibers, both colored black, were cut to 24 inches each, and 30 g of fibers (15 g of PVC fibers and 15 g of PET fibers) were brushed to 25 inches. did.
Other steps were the same as in Example 1, and this was referred to as Example 2.

(Example 3)
In Example 1, the fiber bundle formation step included cutting black colored PVC fibers to 16.5 inches, brushing 30 g of PVC fibers to 19 inches, and cutting the PVC fibers in half lengthwise. The blend length was set to 9.5 inches.
In the winding step, the dehydrated fiber bundle was fixed to a pipe having a diameter of 1.4 inches (35 mm) with a rubber, and the fiber was entwined around the pipe.
Other steps were the same as in Example 1, and this was referred to as Example 3.

(Example 4)
In Example 3, the fiber bundle formation step included cutting black colored PVC fibers to 24 inches, brushing 30 g of PVC fibers to 27 inches, cutting the PVC fibers in half lengthwise and blending. The length is 13.5 inches.
In the winding step, the dehydrated fiber bundle was fixed to a pipe having a diameter of 1.6 inches (40 mm) with a rubber, and the fiber was entwined around the pipe.
Other steps were the same as in Example 3, and this was referred to as Example 4.

Figs. 3 and 4 show artificial hair formed from the fiber bundles obtained in Examples 3 and 4. Figs.
Further, Examples 1 to 4 are summarized as follows.

In the fiber bundles of Examples 1 and 2, as shown in Table 1, the hair length was heat-shrunk to half of the blend length, and the curl was a gentle J-shaped curl with a radius of curvature of 0.88 inches (22.5 mm). was formed.
In the artificial hair of Example 3, as shown in Table 1 and FIG. 3, the hair length was slightly heat-shrunk with respect to the blend length, and a C-shaped curl with a curvature radius of 0.12 inches (3.0 mm) was formed. Been formed.
In the artificial hair of Example 4, as shown in FIG. 4, the hair length was slightly heat-shrunk with respect to the blend length, and a helical curl with a radius of curvature of 0.14 inches (3.5 mm) was formed.

As described above, according to Examples 1 to 4, gentle curls could be imparted.

1 artificial hair 2 fiber bundle 3 fiber

Claims (4)

A method for producing artificial hair having a fiber bundle in which a plurality of fibers are bundled, wherein a part of the fiber bundle extends with an arc-shaped curl,
A winding step of winding a portion of the fiber bundle around a rod-shaped body in a coil or arc shape;
a heating step of heating the fiber bundle wound around the rod-shaped body;
including a heat dissipation step of dissipating the fiber bundle heated in the heating step to room temperature,
In the winding step, the winding angle of the fiber bundle with respect to the central axis of the rod-shaped body is adjusted so that a portion of the fiber bundle that has been radiated to room temperature in the heat dissipation step has a desired curvature. manufacturing method. The method for manufacturing artificial hair according to claim 1, wherein the winding angle is 20 degrees or more and 40 degrees or less. A step prior to the winding step includes a connecting step of tying or adhering the fiber bundle in a range from one end of the fiber bundle to 1/4 or less of the total length of the fiber bundle. The method for producing artificial hair according to claim 1 or 2. Having a fiber bundle in which a plurality of fibers are bundled,
The fiber bundle is connected on one end side and has a curl extending in an arc shape on the other end side,
The artificial hair, wherein the radius of curvature of the curl is 0.1 inch or more and 2 inches or less.

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