Hair iron

Abstract

The object of the present invention is to provide a hair iron that can reduce hair damage. [Solution] The hair iron of the present invention comprises a first arm and a second arm that are connected in a way that allows them to be opened and closed, A first clamping surface provided on the inside of the first arm, A second clamping surface provided on the inside of the second arm, The hair iron is characterized by having a heating section for heating hair, provided on at least one of the first or second clamping surfaces. In a preferred embodiment of the hair iron of the present invention, the surface of the heating section is characterized by having a curved surface.

Description

Technical Field

[0001] The present invention relates to a hair iron, and particularly to a hair iron capable of efficiently forming curls.

Background Art

[0002] Generally, hair irons are used for hair styling such as hair straightening, ironing, and treatment. Such a hair iron has one end of a pair of arm members rotatably connected, and heating portions facing each other are provided on the other end sides of both arm members. By sliding the hair iron toward the hair tips with the hair pinched between the heated heating portions, the entire hair can be heated for hair styling.

[0003] For example, as a hair iron, a hair styling device (1) including a hand-held treatment unit (2), wherein the hand-held treatment unit (2) has two arms (3, 4), and the two arms (3, 4) are configured to form a clamp having two surfaces (5, 6) facing each other, enabling a hair bundle to be clamped, and the hand-held treatment unit includes means (7) for diffusing steam, and the means (7) for diffusing steam is configured to diffuse steam from a first surface (5) of the two surfaces to a second surface (6) of the two surfaces. In the hair styling device (1), one of the arms (3, 4) is characterized by having a comb (19) positioned upstream or downstream of one of the surfaces (5, 6) of the arms (3, 4) (Patent Document 1).

Prior Art Documents

[0005] However, in the prior art, including the aforementioned Patent Document 1, the thickness of the arm is sometimes increased in order to increase the heat capacity, which leads to the problem of the overall size and weight increasing.

[0006] Furthermore, before using a hair iron, various chemicals, such as oxidizing agents and reducing agents, may be used, including hair coloring, hair treatments, and bleaching.

[0007] In such cases, after achieving their intended purpose as oxidizing or reducing agents, these products can actually damage the hair. While attempts have been made to reduce hair damage by using products that minimize damage to the hair and by avoiding prolonged use, these efforts have not always been successful.

[0008] For example, hydrogen peroxide, used in bleaching agents, can provide good coloring, but it also has the problem of damaging hair by acting on and breaking down keratin, the main component of hair.

[0009] Furthermore, conventional technologies often focus on straightening curly hair, and do not consider creating permanent waves by setting curls. Moreover, when setting curls as described above, better contact between the arms would allow for more appropriate processing.

[0010] Furthermore, many curl-forming and setting methods rely heavily on the hair iron itself, and there is a desire for more efficient methods of forming and setting curls using methods other than hair irons.

[0011] Therefore, the object of the present invention is to provide a hair iron that can efficiently form curls. [Means for solving the problem]

[0012] In order to achieve the above objective, the inventors of this invention conducted thorough research on hair irons and, as a result, arrived at the present invention.

[0013] In other words, the hair iron of the present invention comprises a first arm and a second arm that are connected in a way that allows them to be opened and closed, A first clamping surface provided on the inside of the first arm, A second clamping surface provided on the inside of the second arm, The invention is characterized by having a heating portion for heating hair provided on at least one of the first or second clamping surfaces.

[0014] Furthermore, in a preferred embodiment of the hair iron of the present invention, the surface of the heating element is characterized by having a curved surface.

[0015] Furthermore, in a preferred embodiment of the hair iron of the present invention, the surface of the heating element is characterized by having a substantially flat surface.

[0016] Furthermore, in a preferred embodiment of the hair iron of the present invention, the plate shape constituting the surface of the heating portion is characterized in that it is different from or the same as the plate shape formed on the first or second clamping surface corresponding to the heating portion.

[0017] Furthermore, in a preferred embodiment of the hair iron of the present invention, the curved surface is characterized in that it occupies a range of 1 / 2 to 1 / 4 of the entire surface of the heating portion.

[0018] Furthermore, in a preferred embodiment of the hair iron of the present invention, the heating element is characterized by having a layer made of at least platinum.

[0019] Also, in a preferred embodiment of the hair iron of the present invention, the heating part further has a layer made of at least one of nickel, copper, electroless nickel, or aluminum.

[0020] Also, in a preferred embodiment of the hair iron of the present invention, the thickness of the platinum layer is 0.05 to 1.0 μm.

[0021] Also, in a preferred embodiment of the hair iron of the present invention, the surface of the heating part is buffed.

[0022] Also, in a preferred embodiment of the hair iron of the present invention, the first and / or second arm is provided with a hydrogen peroxide reduction device.

[0023] Also, in a preferred embodiment of the hair iron of the present invention, the first and / or second arm is further provided with a temperature control device.

[0024] Also, in a preferred embodiment of the hair iron of the present invention, the hydrogen peroxide reduction device reduces hydrogen peroxide by temperature setting.

[0025] Also, in a preferred embodiment of the hair iron of the present invention, the temperature is 80°C or higher.

[0026] Also, in a preferred embodiment of the hair iron of the present invention, the temperature is 140°C to 180°C.

[0027] Also, in a preferred embodiment of the hair iron of the present invention, it further has a connecting member connecting the first arm and the second arm.

[0028] Furthermore, in a preferred embodiment of the hair iron of the present invention, the hydrogen peroxide reduction device and the temperature control device are integrated into a single unit.

[0029] Furthermore, in a preferred embodiment of the hair iron of the present invention, the first and / or second arms are characterized by being equipped with switches for the hydrogen peroxide reduction device and the temperature control device.

[0030] Furthermore, in a preferred embodiment of the hair iron of the present invention, the connecting member is characterized by being one or more.

[0031] Furthermore, in a preferred embodiment of the hair iron of the present invention, the hair iron comprises an arm whose base ends are rotatably coupled to each other and whose tip end performs a clamping operation when the gripping part in the middle is operated, and a processing part (also called a straightening surface or clamping part) which is positioned opposite to the tip end of the arm and straightens the hair by clamping it with a processing surface (also called a straightening surface or clamping surface) while heating the hair with a hot plate during the clamping operation, wherein the platinum layer is provided on the surface of the base material.

[0032] Furthermore, in a preferred embodiment of the hair iron of the present invention, a titanium layer is formed between the surface of the substrate and the platinum layer.

[0033] Furthermore, in a preferred embodiment of the hair iron of the present invention, a nickel layer is formed between the surface of the substrate and the titanium layer, and between the titanium layer and the platinum layer.

[0034] Furthermore, in a preferred embodiment of the hair iron of the present invention, a magnet is arranged along the first processing surface on the back side of at least one of the heating plates.

[0035] Furthermore, in a preferred embodiment of the hair iron of the present invention, the arms are such that their base ends are rotatably connected to each other, and the gripping operation of the gripping part in the middle causes the tip end to perform a clamping operation, A hair iron comprising a processing unit positioned opposite the tip of the arm and which heats the hair with a hot plate during the clamping operation while clamping and straightening the hair with a processing surface, At least one of the processing units is movably supported on the arm via a processing unit biasing means so that it can move back and forth within a predetermined range relative to the other side from the state in which it is attached to the arm. A magnet is placed on the back side of at least one of the heating plates, along the processing surface. The processing unit biasing means is flexed in response to the repulsive or attractive force between the magnets or the attractive force of the other magnet toward the heating plate, thereby allowing the processing unit to move forward or backward from its mounting position and correct its relative posture.

[0036] Furthermore, in a preferred embodiment of the hair iron of the present invention, the processing section is provided with a housing behind the heating plate, The housing is characterized by providing the magnet and a magnet biasing means for biasing the magnet toward the heating plate side relative to the housing.

[0037] Furthermore, in a preferred embodiment of the hair iron of the present invention, a heating element is provided between the back surface of the heating plate and the magnet within the housing portion, which conducts heat from the back surface to the heating plate.

[0038] Furthermore, in a preferred embodiment of the hair iron of the present invention, the hair iron comprises an arm that performs a clamping operation by gripping the gripping part, and a processing part positioned opposite the arm that heats the hair with the clamping operation while clamping and straightening it with a processing surface, One of the treated surfaces of the aforementioned treatment unit is either the surface of the base material as is, or an uneven surface with adjusted surface roughness of the base material, such that when viewed in cross-section, the hair enters into the recesses of the treated surface, increasing the contact points or contact area with the hair, dispersing the force acting on the cross-section of the hair from the treated surface, and dispersing the heat transmitted from the treated surface to the hair, while the other treated surface is formed to be a mirror-like surface of the base material.

[0039] Furthermore, in a preferred embodiment of the hair iron of the present invention, one or both of the treated surfaces of the treatment section are formed by providing a platinum layer on their surface.

[0040] Furthermore, in a preferred embodiment of the hair iron of the present invention, a titanium layer is formed between the surface of the substrate and the platinum layer.

[0041] Furthermore, in a preferred embodiment of the hair iron of the present invention, a nickel layer is formed between the surface of the substrate and the titanium layer, and between the titanium layer and the platinum layer.

[0042] Furthermore, in a preferred embodiment of the hair iron of the present invention, one of the treated surfaces is characterized by having an uneven surface with irregularities of 5 to 15 μm.

[0043] Furthermore, in a preferred embodiment of the hair iron of the present invention, a magnet is arranged along the back side of the processing surface.

[0044] Furthermore, in a preferred embodiment of the hair iron of the present invention, at least one of the processing units is movably supported on the arm via a processing unit biasing means so that it can move back and forth within a predetermined range relative to the other side from the state in which it is attached to the arm. A magnet is placed along the back side of the processing surface, The biasing means for the processing unit is deflected in response to the repulsive or attractive force between the magnets or the attractive force of the other magnet toward the processing unit, thereby allowing the processing unit to move forward or backward from its mounting position and correct its relative posture.

[0045] Furthermore, in a preferred embodiment of the hair iron of the present invention, the processing section is provided with a housing section on the rear side of the processing surface. The housing section is characterized by providing the magnet and a magnet biasing means for biasing the magnet toward the processing surface side relative to the housing section.

[0046] Furthermore, in a preferred embodiment of the hair iron of the present invention, a heating element for heating is provided between the back of the processing surface and the magnet within the housing.

[0047] Furthermore, the present invention's iron perm method is characterized by comprising the steps of: applying a permanent wave agent comprising a reducing agent, an alkaline agent, a surfactant, a chelating agent, and a conditioning agent; and performing an iron perm treatment after applying the permanent wave agent.

[0048] Furthermore, in a preferred embodiment of the iron perm method of the present invention, the iron perm treatment is characterized by being performed using a hair iron according to claims 1 to 38.

[0049] Furthermore, in a preferred embodiment of the iron perm method of the present invention, the permanent wave agent is characterized in that it further contains at least one of a hair protectant, a fragrance, a reaction modifier, or an anti-inflammatory agent.

[0050] Furthermore, a preferred embodiment of the iron perm method of the present invention is characterized by further including a step of applying a hair setting agent after the step of performing the iron perm treatment.

[0051] Furthermore, in a preferred embodiment of the iron perm method of the present invention, the hair setting agent is characterized by containing an oxidizing agent, a conditioning agent, a chelating agent, and a surfactant.

[0052] Furthermore, in a preferred embodiment of the iron perm method of the present invention, the conditioning agent is characterized by being at least one selected from hydrolyzed collagen, hydrolyzed keratin, hydrolyzed silk, hydrolyzed large soy protein, hydroxyethylcellulose, cationized polymer, dimethicone, amodimethicone, propylene glycol (PG), 1,3-butylene glycol (BG), glycerin, and sorbitol.

[0053] Furthermore, in a preferred embodiment of the iron perm method of the present invention, the cationized polymer is characterized by being at least one selected from the group consisting of polyquaternium-10, polyquaternium-6, polyquaternium-7, polyquaternium-11, polyquaternium-22, polyquaternium-37, and polyquaternium-39.

[0054] Furthermore, in a preferred embodiment of the iron perm method of the present invention, the hair protective agent is characterized by being at least one selected from the group consisting of hydrolyzed collagen, hydrolyzed keratin, hydrolyzed silk, hydrolyzed large soy protein, hydroxyethylcellulose, cationized polymer, dimethicone, and amodimethicone.

[0055] Furthermore, in a preferred embodiment of the iron perm method of the present invention, the cationized polymer is characterized by being at least one selected from the group consisting of polyquaternium-10, polyquaternium-6, polyquaternium-7, polyquaternium-11, polyquaternium-22, polyquaternium-37, and polyquaternium-39.

[0056] Furthermore, in a preferred embodiment of the iron perm method of the present invention, the reaction modifier is characterized by being dithiodiglycolic acid or ammonium dithiodiglycolic acid.

[0057] Furthermore, in a preferred embodiment of the iron perm method of the present invention, the anti-inflammatory agent is characterized by being at least one selected from the group consisting of glycyrrhizic acid or its salts or derivatives, glycyrrhetinic acid or its salts or derivatives, and allantoin. [Effects of the Invention]

[0058] The hair iron of the present invention offers the advantageous effect of providing a hair iron that can improve the contact between the arms. Furthermore, another aspect of the hair iron of the present invention offers the advantageous effect of being able to efficiently form curls. Furthermore, another aspect of the hair iron of the present invention offers the advantageous effect of being able to reduce damage to the hair.

[0059] Furthermore, according to the hair iron of the present invention, when the gripping portion in the middle of the clamping arm is gripped and operated, the base end rotates relative to each other, and the tip end can perform a clamping action. This clamping action provides the advantageous effect of being able to clamp and straighten the hair with the clamping surface (also called the processing surface or straightening surface) positioned opposite to the tip of the clamping arm.

[0060] According to another embodiment of the hair iron of the present invention, the hair iron comprises a clamping arm that performs a clamping operation by gripping the gripping part, and a straightening body positioned opposite the clamping arm that heats the hair during the clamping operation while clamping and straightening it with a straightening surface. In this hair iron, one straightening surface of the straightening body is made rough with an uneven surface to increase the contact points or contact area with the hair, while the other straightening surface is formed to be smoother than the other straightening surface. As a result, the other straightening surface adjusts the surface of the hair to give it shine, and the one straightening surface increases the contact points or contact area with the hair during treatment. Therefore, the force acting on the cross-section of the hair can be distributed, and the health of the hair after treatment can be maintained.

[0061] According to another embodiment of the hair iron of the present invention having a platinum layer (also called a platinum layer), the platinum layer provides a moisturizing function to the hair during treatment, suppresses hair drying due to heating during treatment, and has the advantageous effect of maintaining the health of the hair after treatment. [Brief explanation of the drawing]

[0062] [Figure 1] Figure 1 is a side view of a hair iron according to one embodiment of the present invention. [Figure 2]Figure 2 is a perspective view from the handle side of a hair iron in one embodiment of the present invention. [Figure 3] Figure 3 is a perspective view of a hair iron from the straightening side in one embodiment of the present invention. [Figure 4] Figure 4 shows the effect of a hair iron in one embodiment of the present invention. [Figure 5] Figure 5 is a view from the tip of the straightening side of a hair iron in one embodiment of the present invention. [Figure 6] Figure 6 is a view from the tip of the straightening end of a hair iron in one embodiment of the present invention. [Figure 7] Figure 7 shows the effect of a hair iron in one embodiment of the present invention. Although it is difficult to see in the figure, the bar graph is displayed from left to right in the order of hair tips, middle, and roots. [Figure 8] Figure 8 shows a hair iron according to one embodiment of the present invention. [Figure 9] Figure 9 is a top view of a hair iron in one embodiment of the present invention. [Figure 10] Figure 10 shows a hair iron in one embodiment of the present invention, reversed from Figure 11 (the reverse side before assembly). [Figure 11] Figure 11 is a bottom view of a hair iron in one embodiment of the present invention. [Figure 12] Figure 12 shows a hair iron in one embodiment of the present invention, reversed from Figure 9 (the reverse side before assembly). [Figure 13] Figure 13 shows a hair iron according to one embodiment of the present invention. [Figure 14] Figure 14 shows a perspective view of the upper case portion of the main body for assembling the upper and lower parts of a hair iron in one embodiment of the present invention. The plate and core material that constitute the heating section are illustrated conceptually. [Figure 15]Figure 15 shows a side view of the upper case portion of the main body for assembling the upper and lower parts of a hair iron in one embodiment of the present invention. The plate and core material that constitute the heating section are illustrated conceptually. [Figure 16] Figure 16 shows a perspective view of the lower case portion of the main body for assembling the upper and lower parts of a hair iron in one embodiment of the present invention. The plate and core material that constitute the heating section are illustrated conceptually. [Figure 17] Figure 17 shows a side view of the lower case portion of the main body for assembling the upper and lower parts of a hair iron in one embodiment of the present invention. The plate and core material that constitute the heating section are illustrated conceptually. [Figure 18] Figure 18 schematically shows the configuration from the heating section to the biasing section in a hair iron according to one embodiment of the present invention. Figure 18(a) shows a perspective view of the plate, Figure 18(b) shows the plate and the components inside the plate, Figure 18(c) shows a cross-sectional view of the plate and the components inside the plate, and Figure 18(d) shows an example of the configuration of the components inside the plate. [Modes for carrying out the invention]

[0063] The hair iron of the present invention comprises a first arm and a second arm that are connected in a way that allows them to be opened and closed, A first clamping surface provided on the inside of the first arm, A second clamping surface provided on the inside of the second arm, The present invention is characterized by having a heating element for heating hair, provided on at least one of the first or second clamping surfaces. In the present invention, the first arm and the second arm only need to be connected in an openable and closable manner, and are not particularly limited. In the present invention, it is possible to clamp hair using the first clamping surface provided on the inside of the first arm and the second clamping surface provided on the inside of the second arm. It is possible to treat the hair through both clamping surfaces by heating hair using the heating element for heating hair provided on either the first or second clamping surface. Furthermore, in the present invention, as will be clear from the embodiments described later, it is possible to efficiently form and fix curls in the hair by combining the hair iron of the present invention with a permanent wave agent.

[0064] Furthermore, the heating element only needs to be provided on at least one of the first or second clamping surfaces; it may be provided on one of the first or second clamping surfaces, or on both of the first or second clamping surfaces. When the heating element is provided on both of the first or second clamping surfaces, it has advantages such as allowing the hair to be straightened and restyled on the flat surface even if the straightening and curling during hair straightening treatment fails.

[0065] Furthermore, in a preferred embodiment of the hair iron of the present invention, the surface of the heating element is characterized by having a curved surface from the viewpoint of setting curls.

[0066] Furthermore, in a preferred embodiment of the hair iron of the present invention, the surface of the heating element is characterized by having a substantially flat surface, in order to achieve a synergistic effect with the curved surface and to set the curl.

[0067] Furthermore, in a preferred embodiment of the hair iron of the present invention, the plate shape constituting the surface of the heating section can be different from the plate shape formed on the first or second clamping surface corresponding to the heating section, from the viewpoint of curl setting, or it can be the same shape from the viewpoint of curl setting and straightening. The advantage of the present invention in the embodiment in which the plate shape is the same is that both curls and straightening can be created. When heating sections are provided on both sides, a preferred plate shape from the viewpoint of being able to set curls and straighten is a shape having a flat part and curved surfaces on both ends or one side.

[0068] Furthermore, in a preferred embodiment of the hair iron of the present invention, the curved surface is characterized in that it occupies a range of 1 / 2 to 1 / 4 of the entire surface of the heating section, from the viewpoint of curling and straightening.

[0069] Furthermore, in a preferred embodiment of the hair iron of the present invention, the heating section is characterized by having a layer made of at least platinum, from the viewpoint that the platinum layer (also called the platinum layer) provides a water-retaining function to the hair during treatment, suppresses drying of the hair due to heating during treatment, and maintains the healthy state of the hair after treatment.

[0070] Furthermore, in a preferred embodiment of the hair iron of the present invention, the heating element is characterized by having a layer made of at least one of nickel, copper, electroless nickel, or aluminum, from the viewpoint of improving adhesion with platinum. In the heating element, the outermost platinum surface can come into direct contact with the hair. Regarding the order of the layers, there is a risk of insufficient adhesion between aluminum and platinum, and the adhesion can be improved by sandwiching nickel-copper-nickel in between. Also, there is a risk of insufficient adhesion with combinations of aluminum and copper, and platinum and copper, and when using all materials, it is preferable to use the order of platinum, nickel, copper, electroless nickel, and aluminum.

[0071] Furthermore, as shown in Figure 18, which will be described later, strictly speaking, the heating section can be composed of a plate, with a heating source such as a ceramic heater in the layer below the plate. These heating sections (plates) can be shaped as shown in Figure 18, for example, as will be described later.

[0072] Furthermore, in a preferred embodiment of the hair iron of the present invention, the thickness of the platinum layer is characterized by being 0.05 to 1.0 μm, from the viewpoint of cost reduction and improved adhesion. This is because if it is outside this range, there is a risk that the corners will bulge, and the adhesion between the plates will be poor.

[0073] In a preferred embodiment, the thickness of the nickel layer is preferably 1 to 20 μm, more preferably 5 to 10 μm. In a preferred embodiment, the thickness of the copper layer is preferably 1 to 10 μm, more preferably 2 to 5 μm. In a preferred embodiment, the thickness of the electroless nickel layer is preferably 1 to 10 μm, more preferably 3 to 5 μm. In a preferred embodiment, the thickness of the aluminum layer is preferably 0.1 to 10 mm, more preferably 1 to 3 mm.

[0074] Furthermore, in a preferred embodiment of the hair iron of the present invention, the surface of the heating element is characterized by being buff-polished. For example, by buff-polishing the surface of the aluminum plate constituting the heating element to make it smoother, it becomes possible to eliminate unevenness in the layer placed on top of it, such as the platinum layer. Moreover, by buff-polishing in this manner, it becomes possible to improve the adhesion when plates plated up to the platinum layer are joined together. In addition, deburring of the four corners of the plate may be performed.

[0075] Furthermore, in a preferred embodiment of the hair iron of the present invention, the first and / or second arms are equipped with a hydrogen peroxide reduction device. This makes it possible to efficiently remove excess hydrogen peroxide, such as that used in bleaching agents, and thereby minimize damage to the hair. The hydrogen peroxide reduction device only needs to be installed on the arms, and its location is not particularly limited. In a preferred embodiment, from the viewpoint of avoiding the clamping surface which is expected to become hot due to the heating section, it can be installed anywhere from the center of the arm to the handle side of the arm.

[0076] Furthermore, in a preferred embodiment of the hair iron of the present invention, the hydrogen peroxide reduction device is characterized by reducing hydrogen peroxide by temperature setting. In a preferred embodiment of the hair iron of the present invention, the temperature (temperature of the processing surface of the hair iron) is characterized by being 80°C or higher, from the viewpoint of when hydrogen peroxide begins to be reduced. Furthermore, in a preferred embodiment of the hair iron of the present invention, the temperature is characterized by being 140°C to 180°C, from the viewpoint of reducing hydrogen peroxide more efficiently.

[0077] Furthermore, in a preferred embodiment of the hair iron of the present invention, the first and / or second arms are further equipped with a temperature control device. The temperature setting device only needs to be installed on the arm, and its location is not particularly limited. In a preferred embodiment, from the viewpoint of avoiding the clamping surface which is expected to become hot due to the heating part, it can be installed anywhere from the center of the arm to the handle side of the arm.

[0078] In some cases, a temperature control device is installed in the middle of the power cord coming out of the hair iron body, but in this case, it is necessary to pull the cord to turn the power on and off. On the other hand, in the present invention, the hydrogen peroxide reduction device and the temperature control device are installed inside the arm, and as will be described later, if the switch function is installed inside the arm, it is possible to turn the power on and off while holding the hair iron in the right hand, and if a dial-type adjustment mechanism is used, the hydrogen peroxide and temperature can be easily adjusted by turning the dial with the thumb, thereby improving operability.

[0079] Furthermore, in a preferred embodiment of the hair iron of the present invention, the hair iron is further characterized by having a connecting member that connects the first arm and the second arm. The connecting member between the two arms makes it possible to suppress the wobble of the tip of the iron (i.e., the lateral wobble when viewed from the tip of the iron). Specifically, it makes it possible to ensure that the plate surfaces align without misalignment when the iron is pressed. In addition, in a preferred embodiment of the hair iron of the present invention, the connecting member is characterized by being one or more, from the viewpoint of operability.

[0080] Furthermore, in a preferred embodiment of the hair iron of the present invention, the hydrogen peroxide reduction device and the temperature control device are integrated for ease of operation. Also, in a preferred embodiment of the hair iron of the present invention, the first and / or second arms are equipped with switches for the hydrogen peroxide reduction device and the temperature control device. As mentioned above, in some cases the temperature control device is installed in the middle of the power cord coming out of the hair iron body, but in this case, it is necessary to pull the cord to turn the power on and off. On the other hand, in the present invention, the hydrogen peroxide reduction device and the temperature control device are installed inside the arms, and switches can also be provided, so it is possible to improve operability.

[0081] It is also acceptable to bleach the hair before using a hair iron. The bleaching process involves using an alkaline agent to soften the hair. The main components of bleach are hydrogen peroxide and ammonia water (alkaline substances). Ammonia water acts on the cuticle on the surface of the hair, causing it to swell and soften. Hydrogen peroxide then penetrates into the swollen and softened hair, and reacts chemically with melanin. When black hair is bleached, it changes color depending on the application time: reddish-brown → reddish-orange → yellowish-orange → yellow. This is largely because the blackish-brown "eumelanin" is broken down, while the orange-red "pheomelanin" is difficult to break down.

[0082] However, hydrogen peroxide doesn't only oxidize melanin. It can also break down keratin, the main component of hair, potentially damaging it.

[0083] In this invention, it is possible to minimize hair damage by removing the hydrogen peroxide as quickly as possible.

[0084] Furthermore, in a preferred embodiment of the hair iron of the present invention, the arms are such that their base ends are rotatably connected to each other, and the gripping operation of the gripping part in the middle causes the tip end to perform a clamping operation, In a hair iron comprising a processing unit (also called a straightening body or clamping unit) positioned opposite the tip of the arm and performing a clamping motion to heat the hair with a hot plate while clamping and straightening it with a processing surface (also called a straightening surface or clamping surface), the platinum layer is provided on the surface of the base material in order to suppress the drying of the hair during treatment. Furthermore, the platinum layer has water-retaining and catalytic functions, and has the advantages of: 1) its water-retaining function allows it to collect moisture from the air and retain it in the hair; and 2) its catalytic function allows it to turn harmful substances and organic compounds into atomic form.

[0085] In this invention, the heating plate is not particularly limited and only needs to be able to transfer heat from the heater. For example, the heating plate can be made of a lightweight material with high thermal conductivity such as aluminum, iron (Fe), or copper (Cu). The heating plate can also be formed into a rectangular plate shape when viewed from the opposite side.

[0086] In this invention, the treated surface (corrected surface) of the treated area (corrected body) can be formed by providing a platinum (Pt) layer on the surface of a base material made of, for example, aluminum (Al), iron (Fe), copper (Cu), etc.

[0087] Furthermore, in a preferred embodiment of the hair iron of the present invention, a titanium layer is formed between the surface of the substrate and the platinum layer, from the viewpoint of converting harmful substances into harmless water and carbon dioxide through photocatalytic function.

[0088] Furthermore, in a preferred embodiment of the hair iron of the present invention, a nickel layer is formed between the surface of the aluminum substrate and the titanium layer, and between the titanium layer and the platinum layer, from the viewpoint of preventing oxidation of the aluminum substrate and improving the adhesion between each layer.

[0089] Furthermore, in a preferred embodiment of the hair iron of the present invention, a magnet is arranged along the first processing surface on the back side of at least one of the heating plates, from the viewpoint of penetrating water into the hair.

[0090] Furthermore, in a preferred embodiment of the hair iron of the present invention, the hair iron comprises an arm whose base ends are rotatably coupled to each other and whose tip end performs a clamping operation when the gripping operation of the intermediate gripping part is performed, and a processing part (also called a clamping part or straightening body) which is positioned opposite to the tip end of the arm and clamps and straightens the hair with a processing surface (also called a clamping surface or straightening surface) while heating the hair with a hot plate during the clamping operation, wherein at least one of the processing parts is movably supported on the arm via a processing part biasing means (also called a biasing part) so that it can move forward and backward within a predetermined range relative to the other side from the state in which it is attached to the arm, and a magnet is arranged on the back side of at least one of the hot plates along the processing surface, and the processing part biasing means is bent in response to the repulsive or attractive force between the magnets or the attractive force of the other magnet toward the hot plate side, thereby allowing the processing part to move forward and backward from the state in which it is attached, and correcting the relative positions. The processing part biasing means may also be called a processing part (straightening body) biasing part.

[0091] In this invention, the biasing element is not particularly limited, and for example, a spring, leaf spring, rubber, etc., can be used.

[0092] Furthermore, in the present invention, the magnet is not particularly limited, and for example, in addition to permanent magnets, electromagnets or a combination of permanent magnets and electromagnets can be used. The magnet (magnet plate) is preferably 10,000 gauss or more. For example, the magnet plate can be formed in the shape of a rectangular plate using a neodymium magnet of 15,000 gauss, and it is possible to arrange them so that the south poles face each other on both processing units (correcting bodies), or so that the north poles face each other.

[0093] Furthermore, in a preferred embodiment of the hair iron of the present invention, the processing section is characterized by having a housing behind the heating plate, and the housing is provided with the magnet and a magnetic biasing means for biasing the magnet toward the heating plate relative to the housing. The biasing means is also called the biasing part, and the biasing part is not particularly limited, and for example, a spring, a leaf spring, a spring, rubber, etc. can be used.

[0094] Furthermore, in a preferred embodiment of the hair iron of the present invention, a heating element is provided between the back surface of the heating plate and the magnet within the housing, which conducts heat from the back surface to the heating plate. In the present invention, the heating element is not particularly limited and can be, for example, a heater, a ceramic heater, or the like.

[0095] Furthermore, in a preferred embodiment of the hair iron of the present invention, the hair iron comprises an arm that performs a clamping operation by gripping the gripping part, and a processing part positioned opposite the arm that heats the hair with the clamping operation while clamping and straightening it with a processing surface, One of the processing surfaces of the processing unit is either the same as the surface of the base material, or has an uneven surface with adjusted surface roughness, so that when viewed in cross-section, the hair enters the recesses of the processing surface on the one side, increasing the contact points or contact area with the hair, dispersing the force acting on the cross-section of the hair from the processing unit, and having a rough surface with unevenness to disperse the heat transmitted from the processing surface to the hair, while the other processing surface is formed to be mirror-finish on the surface of the base material. Thus, in the present invention, one straightening surface of the straightening unit has a rough surface with unevenness to increase the contact points or contact area with the hair, and the other straightening surface is formed to be smoother than the one straightening surface. As a result, the other straightening surface adjusts the surface of the hair to give it shine, and the one straightening surface increases the contact points or contact area with the hair during treatment. Therefore, the force acting on the cross-section of the hair can be dispersed, and the health of the hair after treatment can be maintained.

[0096] In one embodiment of the present invention, in which one side of the orthodontic surface is uneven and the other side is mirror-finished, the heating element may be located on either the uneven side or the mirror-finished side. However, when heating only one side, the heating element can be provided on the uneven side because it has a larger contact area and can effectively transfer heat.

[0097] Furthermore, in a preferred embodiment of the hair iron of the present invention, from the viewpoint of suppressing hair drying during treatment, one or both of the treatment surfaces of the treatment section are formed by providing a platinum layer on their surface.

[0098] Furthermore, in a preferred embodiment of the hair iron of the present invention, a titanium layer is formed between the surface of the substrate and the platinum layer, from the viewpoint of converting harmful substances into harmless water and carbon dioxide through photocatalytic function.

[0099] Furthermore, in a preferred embodiment of the hair iron of the present invention, a nickel layer is formed between the surface of the aluminum substrate and the titanium layer, and between the titanium layer and the platinum layer, from the viewpoint of preventing oxidation of the aluminum substrate and improving the adhesion between each layer.

[0100] Furthermore, in a preferred embodiment of the hair iron of the present invention, the thickness of the hair is approximately 80 μm, and from the viewpoint of increasing the contact points or contact area with the hair, one of the treated surfaces is characterized by having an uneven surface with irregularities of 5 to 15 μm.

[0101] Furthermore, in a preferred embodiment of the hair iron of the present invention, a magnet is arranged along the back side of the treatment surface, from the viewpoint of penetrating water into the hair.

[0102] Furthermore, in a preferred embodiment of the hair iron of the present invention, at least one of the processing units is movably supported on the arm via a processing unit biasing means (also called a biasing unit) so that it can move back and forth within a predetermined range relative to the other side from the state in which it is attached to the arm. A magnet is placed along the back side of the processing surface, The biasing means for the processing unit is deflected in response to the repulsive or attractive force between the magnets or the attractive force of the other magnet toward the processing unit, thereby allowing the processing unit to move forward or backward from its mounting position and correct its relative posture.

[0103] Furthermore, in a preferred embodiment of the hair iron of the present invention, the processing section is provided with a housing section on the rear side of the processing surface. The housing section is characterized by providing the magnet and a magnet biasing means for biasing the magnet toward the processing surface side relative to the housing section.

[0104] Furthermore, in a preferred embodiment of the hair iron of the present invention, a heating element (also called a heater) for heating is provided between the back of the processing surface and the magnet within the housing.

[0105] Furthermore, in a preferred embodiment of the hair iron of the present invention, the first and / or second arms may have biasing parts that bias the clamping surfaces and elastically adjust the clamping state between the clamping surfaces. When the gripping parts in the middle of the first and / or second arms are gripped and operated, the base ends of the first and / or second arms rotate relative to each other, and the tip ends of the first and / or second arms (also called the first and / or second clamping arms) can perform a clamping action. This clamping action allows the hair to be clamped and straightened by the clamping surfaces (clamping surfaces) positioned opposite each other at the tip ends of the arms.

[0106] Furthermore, the clamping arm may be provided with a movable support such that at least one of the clamping surfaces can move back and forth relative to the other side, and the clamping arm may be provided with a biasing part that biases the clamping surfaces to elastically adjust the clamping state between the clamping surfaces. This makes it possible to securely clamp hair between the clamping surfaces. The biasing part is not particularly limited, and for example, a spring, leaf spring, spring, rubber, etc., can be used. In addition, the biasing part, for example, a spring, may be separated from the magnet retaining leaf spring to increase the holding force, such as the spring that holds down a bimetallic type thermal fuse. This makes it possible to sense the transmission of temperature with greater accuracy.

[0107] Furthermore, in a preferred embodiment of the hair iron of the present invention, the first and / or second arms may have a core material built in along their longitudinal direction.

[0108] Furthermore, a core material is installed inside the arm so that its longitudinal direction is aligned at least from the tip side to the gripping portion, and this core material maintains its hardness up to a higher temperature than the clamping arm, thereby preventing easy deformation of the tip side of the clamping arm due to heat generated by the heating portion of the clamping surface. Consequently, the gripping portion of the clamping arm can be gripped and force can be smoothly transmitted from the tip side of the clamping arm to the clamping surface, enabling reliable clamping and straightening of the hair.

[0109] Therefore, even if the clamping arm is made thinner to reduce its heat capacity, it is possible to reliably clamp and straighten the hair, and by making the overall weight reduction, it becomes easy to grip the clamping arm and perform fine straightening of curly hair for a certain period of time with flexible operation.

[0110] Furthermore, the core material can be partially provided with a receiving portion that supports the biasing portion, facing the back of the biasing portion. This allows the clamping reaction force from the clamping surface to be received by the receiving portion via the biasing portion, enabling more secure clamping and straightening of the hair by the clamping surfaces.

[0111] Furthermore, since the receiving portion can be provided partially, its shape is less affected by the curved shape of the clamping arm, and the receiving portion can be easily positioned on the back of the biasing portion.

[0112] Furthermore, in a preferred embodiment of the hair iron of the present invention, the core material may have a stopper portion that engages with the clamping surface to restrict its movement in the protruding direction relative to the first and / or second arm. That is, the movement of the clamping surface in the protruding direction relative to the clamping arm can be restricted by engaging with the stopper portion. Therefore, rattling of the clamping surface relative to the clamping arm can be restricted, and the clamping and straightening of the hair by the clamping surfaces can be performed more accurately.

[0113] Furthermore, in a preferred embodiment of the hair iron of the present invention, from the viewpoint of setting curls, at least one of the edges of the heating portion in the hair insertion direction may have a curl-forming curved surface that is curved in the thickness direction of the heating portion. The clamping surface may have heating portions facing each other, and at least one of the edges of the heating portion in the hair insertion direction may have a curl-forming curved surface that is curved in the thickness direction of the heating portion. It is also possible to provide at least one of the edges of the clamping arm tip in the hair insertion direction with a curved surface and / or a flat winding surface for winding the hair.

[0114] It is also possible to arrange the hair wrapped around the curl-forming curved surface so that it extends linearly from the curved surface and contacts the curved or flat surface of the wrapping surface. This allows for more effective curl setting by ensuring that the hair is in sufficient contact with the curl-forming curved surface when curling.

[0115] Furthermore, when applying tension to the hair by wrapping it around the gripping arm and attempting to press the hair against the curl-forming surface, the hair can be easily slid along the curved or flat wrapping surface on the gripping arm side. Therefore, the tension applied to the hair by wrapping can be effectively utilized to press it against the curl-forming surface, allowing for more sufficient curl formation.

[0116] Furthermore, in a preferred embodiment of the hair iron of the present invention, from the viewpoint of being able to accurately clamp and straighten the hair and accurately set the curl, the curl-forming curved surface and / or a plane continuous with the curved surface may also be included.

[0117] In the present invention, at least one of the clamping surfaces is supported by the clamping arm so as to be able to move forward and backward relative to the other side, and the clamping arm can be provided with a biasing part that biases the clamping surface to move forward and elastically adjusts the clamping state between the clamping surfaces. Furthermore, when the clamping surface is retracted, the hair wrapped around the curl-forming curved surface has a plane that is continuous with the curl-forming curved surface and / or the curved surface, that is, it extends linearly from the curl-forming curved surface and contacts the curved surface or plane of the wrapping surface, so that the hair can be accurately clamped and straightened by the opposing, movable clamping surfaces, and the curl can be accurately set.

[0118] In this invention, the winding surface has a plane perpendicular to the clamping surface (straightening surface), and the plane of the winding surface and the curl-forming curved surface are close together in the direction of hair insertion. Therefore, the tension applied to the hair by winding can be directly used as a pressing force on the curl-forming curved surface by sliding it along the plane of the winding surface, making it possible to set the curl more reliably and easily.

[0119] Furthermore, in this invention, the plate, arm, cord, temperature control, magnet, etc., can be improved or modified. For example, the plate plating thickness can be modified to improve adaptability during hair styling. Also, a stopper to prevent arm lateral displacement may be provided from the viewpoint of preventing lateral displacement. Also, an AC cord may be provided from the viewpoint of preventing wire breakage. Furthermore, painting (3 layers) can be applied from the viewpoint of preventing peeling, chemical resistance, and color coordination. In addition, magnets may be used in the configuration between the biasing part and the plate from the viewpoint of heat resistance and magnetic force.

[0120] Furthermore, temperature control is possible to shorten the time it takes to reach the set temperature. A reinforcing plate design may also be adopted to ensure sufficient strength.

[0121] Furthermore, mechanically, the hair iron's upper and lower cases contain a platinum plate, heat-dissipating silicone, a ceramic heater, a mica plate, a heat-resistant magnet, a magnet retainer, and a plate retainer. For control, it can be equipped with a thermistor, a bimetallic thermal fuse, and a PCB unit. Moreover, various effects occur on various molecules such as water molecules due to magnetism, temperature, and platinum components, and through a complex differential effect, it is possible to create a better and more effective situation.

[0122] Furthermore, the present invention's iron perm method is characterized by comprising the steps of: applying a permanent wave agent comprising a reducing agent, an alkaline agent, a surfactant, a chelating agent, and a conditioning agent; and performing an iron perm treatment after applying the permanent wave agent. In the present invention, the reducing agent is not particularly limited, but examples include sodium sulfate (sulfite), thioglycerin, butyrolactone thiol (2-mercapto-4-butanolide), mercaptoethanol, dithiothreitol, thioglycolic acid and its salts, cysteine ​​and its salts, cysteamine and its salts, thiolactic acid and its salts, and lactone thiol. From the viewpoint of curl setting, the content of the reducing agent can be 1 to 10% by mass, preferably 2 to 5% by mass, relative to the total amount of the permanent wave agent.

[0123] Furthermore, in the present invention, the alkaline agent is not particularly limited, but examples include amino alcohols such as ammonia water, triethanolamine, isopropanolamine, 2-amino-2-methyl-1-propanol, and 2-amino-2-methyl-1,3-propanediol; basic amino acids such as L-arginine; carbonates such as ammonium carbonate, ammonium bicarbonate, sodium carbonate, and sodium bicarbonate; caustic alkalis such as potassium hydroxide and sodium hydroxide; and morpholine. From the viewpoint of increasing the reducing power of the reducing agent, the alkaline agent content can be 0.1 to 10% by mass, preferably 1 to 5% by mass, relative to the total amount of the permanent wave agent.

[0124] In the present invention, examples of surfactants include cationic surfactants, quaternary ammonium salts, and / or tertiary amines. Examples of quaternary ammonium salts include alkyltrimethylammonium chloride solution, stearyltrimethylammonium chloride, or stearyltrimethylammonium bromide. Examples of tertiary amines include dimethylaminopropyl stearate, diethylaminoethyl stearate, or behenamidopropyldimethylamine. The surfactant content can be 0.01 to 10% by mass, preferably 0.1 to 5% by mass, relative to the total amount of the permanent wave agent, from the viewpoint of increasing penetration into the hair and improving the texture.

[0125] Furthermore, in the present invention, the metal chelating agent is not particularly limited, but examples include edetate salts, sodium polyphosphate, phytic acid, etc. The content of the metal chelating agent can be 0.001 to 2% by mass, preferably 0.01 to 1% by mass, relative to the total amount of the permanent wave agent, from the viewpoint of preventing oxidation of the reducing agent.

[0126] Furthermore, in a preferred embodiment of the iron perm method of the present invention, the iron perm treatment is characterized by being performed using the hair iron of the present invention. As a result, as will be described later, it becomes possible to efficiently form curls by using the hair iron of the present invention in combination with the permanent wave agent.

[0127] Furthermore, in a preferred embodiment of the iron perm method of the present invention, the permanent wave agent is characterized in that it further contains at least one of a hair protectant, a fragrance, a reaction modifier, an anti-inflammatory agent, or a wetting agent.

[0128] Furthermore, in a preferred embodiment of the iron perm method of the present invention, the hair protective agent is characterized by being at least one selected from the group consisting of hydrolyzed collagen, hydrolyzed keratin, hydrolyzed silk, hydrolyzed large soy protein, hydroxyethylcellulose, cationized polymer, dimethicone, and amodimethicone. The content of the hair protective agent can be 0.1 to 10% by mass, preferably 1 to 5% by mass, relative to the total amount of the permanent wave agent, from the viewpoint of hair protection. Furthermore, in a preferred embodiment of the iron perm method of the present invention, the cationized polymer is characterized by being at least one selected from the group consisting of polyquaternium-10, polyquaternium-6, polyquaternium-7, polyquaternium-11, polyquaternium-22, polyquaternium-37, and polyquaternium-39.

[0129] Furthermore, in a preferred embodiment of the iron perm method of the present invention, the reaction modifier is characterized by being dithiodiglycolic acid or ammonium dithiodiglycolic acid, from the viewpoint of setting curls. The content of the reaction modifier can be 1 to 10% by mass, preferably 2 to 5% by mass, relative to the total amount of the permanent wave agent, from the viewpoint of preventing hair damage.

[0130] Furthermore, in a preferred embodiment of the iron perm method of the present invention, from the viewpoint of anti-inflammatory effects, the anti-inflammatory agent is characterized by being at least one selected from the group consisting of glycyrrhizic acid or its salts or derivatives, glycyrrhetinic acid or its salts or derivatives, and allantoin. From the viewpoint of suppressing inflammation, the content of the anti-inflammatory agent can be 0.01 to 0.5% by mass, preferably 0.1 to 0.3% by mass, based on the total amount of the permanent wave agent.

[0131] Furthermore, in a preferred embodiment of the iron perm method of the present invention, from the viewpoint of penetration, the wetting agent is characterized by being at least one selected from the group consisting of glycerin, diglycerin, or 1,3-butylene glycol. From the viewpoint of penetration, the content of the wetting agent can be 0.01 to 10% by mass, preferably 0.1 to 5% by mass, based on the total amount of the permanent wave agent.

[0132] Furthermore, in a preferred embodiment of the iron perm method of the present invention, from the viewpoint of setting curls, the method further includes a step of applying a hair setting agent after the iron perm treatment.

[0133] Furthermore, in a preferred embodiment of the iron perm method of the present invention, the hair setting agent is characterized by containing an oxidizing agent, a conditioning agent, a chelating agent, and a surfactant.

[0134] In the present invention, the oxidizing agent is not particularly limited, but examples include bromate salts and hydrogen peroxide. From the viewpoint of fixing the curl, the content of the oxidizing agent can be 0.1 to 10% by mass, preferably 3.5 to 9% by mass, based on the total amount of the permanent wave agent.

[0135] Furthermore, in a preferred embodiment of the iron perm method of the present invention, the conditioning agent is characterized by being at least one selected from hydrolyzed collagen, hydrolyzed keratin, hydrolyzed silk, hydrolyzed large soy protein, hydroxyethylcellulose, cationized polymer, dimethicone, amodimethicone, propylene glycol (PG), 1,3-butylene glycol (BG), glycerin, and sorbitol. From the viewpoint of protecting the hair, the content of the conditioning agent can be 0.1 to 10% by mass, preferably 1 to 5% by mass, based on the total amount of the hair setting agent.

[0136] Furthermore, in a preferred embodiment of the iron perm method of the present invention, the cationized polymer is characterized by being at least one selected from the group consisting of polyquaternium-10, polyquaternium-6, polyquaternium-7, polyquaternium-11, polyquaternium-22, polyquaternium-37, and polyquaternium-39.

[0137] Furthermore, in the present invention, the metal sequestering agent is not particularly limited, but examples include edetate salts, sodium polyphosphate, phytic acid, etc. The content of the metal sequestering agent can be 0.001 to 1% by mass, preferably 0.01 to 0.1% by mass, relative to the total amount of the hair setting agent, from the viewpoint of preventing oxidation of the reducing agent.

[0138] In the present invention, examples of surfactants include cationic surfactants, quaternary ammonium salts, and / or tertiary amines. Examples of quaternary ammonium salts include alkyltrimethylammonium chloride solution, stearyltrimethylammonium chloride, or stearyltrimethylammonium bromide. Examples of tertiary amines include dimethylaminopropyl stearate, diethylaminoethyl stearate, or behenamidopropyldimethylamine. The surfactant content can be 0.01 to 10% by mass, preferably 0.1 to 5% by mass, based on the total amount of the hair setting agent, from the viewpoint of increasing penetration into the hair and improving the texture.

[0139] In the present invention, the hair setting agent may further contain a pH adjuster from the viewpoint of maintaining stability. In the present invention, the pH adjuster is not particularly limited, but examples include citric acid or its salts, phosphoric acid or its salts, etc. From the viewpoint of maintaining stability, the content of the pH adjuster can be 0.001 to 5% by mass, preferably 0.01 to 1% by mass, based on the total amount of the hair setting agent. [Examples]

[0140] The following describes examples using the hair iron of the present invention, but the present invention is not limited to the following examples.

[0141] Example 1 Figure 8 shows a hair iron according to one embodiment of the present invention. In the figure, 1 is the first arm, 2 is the second arm, 3 is the first clamping surface, 4 is the second clamping surface, 5 is the hydrogen peroxide reduction device, 6 is the temperature control device, 7 is the connecting member, 8 is the connecting member, and 9 is the switch. The hydrogen peroxide reduction device 5, the temperature control device 6, the connecting members 7 and 8, etc., are not essential, but the explanation will use a hair iron that includes them. A brief explanation of how to use this hair iron is as follows: The power plug is inserted into an outlet, and the clamping surfaces (3, 4) are heated by the heater (heating source). The hair is clamped between the clamping surfaces (3, 4) by the clamping action of the first and second arms, and the hair iron treatment can be performed on the clamped hair along the treatment surface of the clamping surfaces (3, 4) by heating from the heating unit. In this example, the hydrogen peroxide reduction device 5 is installed inside the arm, and the switch function 9 is also installed inside the arm. Therefore, the power can be turned on and off while holding the hair iron in the right hand. In this example, the hydrogen peroxide reduction device 5 and the temperature control device 6 are integrated and have a dial-type adjustment function. Therefore, the hydrogen peroxide and temperature can be easily adjusted by turning the dial with the thumb, improving operability. Note that the temperature adjustment of the hydrogen peroxide reduction device 5 and the temperature control device 6 is not limited to a dial, but can be done by push buttons, levers, etc., and is not particularly limited.

[0142] Additionally, for hair irons equipped with a "hydrogen peroxide removal" mode, it is possible to add a "hydrogen peroxide removal" mode to the iron's dial and set the temperature to 150°C.

[0143] Figure 9 is a top view of a hair iron according to one embodiment of the present invention. In the figure, 33 indicates one side of the tip side 29, 31, 35 indicates one side of the gripping part 21, 23, 37 indicates the inclined surfaces of both sides 33, 35, and 39 indicates the other side of the tip side 29, 31.

[0144] Figure 10 shows a hair iron in one embodiment of the present invention, reversed from Figure 11 (the reverse side before assembly).

[0145] Figure 11 is a bottom view of a hair iron according to one embodiment of the present invention. In the figure, 33 indicates one side of the tip side 29, 31, 35 indicates one side of the gripping part 21, 23, 37 indicates the inclined surfaces of both sides 33, 35, and 39 indicates the other side of the tip side 29, 31.

[0146] Figure 12 shows a hair iron in one embodiment of the present invention, reversed from Figure 9 (the reverse side before assembly).

[0147] Figure 13 shows a hair iron according to one embodiment of the present invention. In the figure, 3 is the first clamping surface, 4 is the second clamping surface, 15 and 17 are the base end, 19 is the rotation axis, 21 and 23 are the gripping parts, 25 and 27 are the points of force application, and 29 and 31 are the tip ends.

[0148] Figure 14 shows a perspective view of the upper case portion of the main body for assembling the upper and lower parts of a hair iron in one embodiment of the present invention. The plate and core material that constitute the heating section are conceptually illustrated. In the figure, 50 indicates the core material, and 51 indicates the plate and other parts.

[0149] Figure 15 shows a side view of the upper case portion of the main body for assembling the upper and lower parts of a hair iron in one embodiment of the present invention. The plate and core material that constitute the heating section are conceptually illustrated. In the figure, 50 indicates the core material, and 51 indicates the plate and other parts.

[0150] Figure 16 shows a perspective view of the lower case portion of the main body for assembling the upper and lower parts of a hair iron in one embodiment of the present invention. The plate and core material that constitute the heating section are conceptually illustrated. In the figure, 50 indicates the core material, and 51 indicates the plate and other parts.

[0151] Figure 17 shows a side view of the lower case portion of the main body for assembling the upper and lower parts of a hair iron in one embodiment of the present invention. The plate and core material that constitute the heating section are conceptually illustrated. In the figure, 50 indicates the core material, and 51 indicates the plate and other parts.

[0152] Figure 18 schematically shows the configuration from the heating section to the biasing section in a hair iron according to one embodiment of the present invention. In the figure, 60 is a plate, 61 is a ceramic heater (heating source), 62 is a mica plate, 63 is a bimetal, 64 is a bimetal retainer, 65 is a leaf spring for retaining the magnet, 66 is a leaf spring for the plate (biasing section), and 67 is a magnet. Figure 18(a) shows a perspective view of the plate, Figure 18(b) shows the plate and components within the plate, Figure 18(c) shows a cross-sectional view of the plate and components within the plate, and Figure 18(d) shows an example of the configuration of components within the plate. The plate is formed using an aluminum base as shown in Figure 18(a), and can be plated thereon in the order of electroless nickel, copper, nickel, and platinum. As shown in Figure 18(b), the components of the plate, such as the ceramic heater (heat source) 61, mica plate 62, bimetal 63, bimetal retainer 64, magnet retaining leaf spring 65, plate leaf spring (biasing part) 66, and magnet 67, can be arranged, for example, as shown in Figure 18(d). As shown in the figure, by changing the spring and separating the spring that holds the bimetal type thermal fuse from the magnet retaining leaf spring, it is possible to further improve the holding force. Furthermore, with these configurations, it is also possible to sense the transfer of temperature with greater accuracy.

[0153] As shown in these diagrams, the hair iron comprises an iron body to which a power cord is connected. The power cord may also be equipped with a temperature control device, a power plug, etc.

[0154] Next, another embodiment of a hair iron using a platinum layer will be described. The hair iron in this other embodiment of the present invention using a platinum layer relates to a hair iron used for straightening hair, etc.

[0155] The hair iron comprises an iron body to which a power cord is connected. The power cord is equipped with a power plug, etc. The iron body comprises a pair of clamping arms 1 and 2 and a pair of straightening surfaces 3 and 4. The clamping arms 1 and 2 are made of resin such as a polyester-based engineering plastic with a coefficient of thermal expansion of 8.8 × 10⁻⁵ cm / cm / ℃, and their base ends 15 and 17 are rotatably connected to each other by a rotating shaft 19. Gripping portions 21 and 23 are provided in the middle of each clamping arm 1 and 2. These gripping portions 21 and 23 are formed relatively thick to facilitate gripping and are approximately the same thickness as the base ends 15 and 17.

[0156] The gripping portions 21 and 23 are provided with fulcrum points 25 and 27 formed on their tip ends, with inclined surfaces. These fulcrum points 25 and 27 are designed to allow the thumb or index finger to apply force when gripping the gripping portions 21 and 23. As shown in Figure 9, the fulcrum points 25 and 27 are slightly larger than the entire gripping portions 21 and 23 when viewed from above, making it easier to apply force with the thumb or index finger.

[0157] One or both of the gripping sections 21 and 23 are provided with, for example, a temperature control device and a temperature display unit, although these are not shown in the figures. The temperature control device includes temperature setting buttons, etc., located on the surface of the gripping sections 21 and 23, and is connected between the power cord and the ceramic heater 61 (described later). It controls the temperature of the ceramic heater 61 by AC phase control of the AC current. The temperature change resulting from the phase control is detected by a thermistor, and temperature correction is performed. The actual temperature based on thermistor detection is displayed on the temperature display unit using LEDs.

[0158] The tip ends 29 and 31 of the clamping arms 1 and 2 are formed to be thinner than the gripping portions 21 and 23 in the direction of mutual alignment. Furthermore, the tip ends 29 and 31 are formed to be thinner than the gripping portions 21 and 23 and are set to be offset to one side relative to the gripping portions 21 and 23. Consequently, one surface 33 of the tip ends 29 and 31 protrudes to one side more than one surface 35 of the gripping portions 21 and 23, and both surfaces 33 and 35 are set to be continuous in a stepped manner by the inclined surface 37. The other surface 39 of the tip ends 29 and 31 is formed to be offset to one side in accordance with the one surface 33 and extends into the central side of the gripping portions 21 and 23.

[0159] The clamping arm is formed in a hollow shape, and the dividing lines allow the divided sections to be joined together. These divided sections are fastened together at the tip ends 29, 31, the gripping sections 21, 23, and the base ends 15, 17 by fasteners such as screws. Fastening holes are formed through the divided sections at the tip ends 29, 31.

[0160] Multiple reinforcing ribs are provided within the hollow gripping portions 21 and 23. One of the gripping arms 1 has protrusions on the opposing sides of both arms 1 and 2, and the other gripping arm 2 has a recess into which the protrusion fits. The protrusion abuts against the bottom surface of the recess and functions as a stopper. These protrusions and recesses can be installed, for example, near the connecting member 7 or 8 in Figure 8. Thus, the clamping arm 7 is configured such that its base ends 15 and 17 are rotatably connected to each other, and the tip ends 29 and 31 perform a clamping action when the gripping parts 21 and 23 in the middle section are operated.

[0161] In the following explanation, since the tip ends 29 and 31 of the clamping arms 1 and 2 are symmetrical, tip end 29 will be described primarily, and the other tip end 31 will refer to the description of tip end 29.

[0162] The tip end 29 has a flat vertical wall surface and a flat bottom wall surface that house the core material 50 inside. The tip end 31 has surfaces similar to the flat vertical wall surface and flat bottom wall surface so that a symmetrical core material 50 can be housed there. The tip end 29 is also provided with a straightening support hole that movably supports the straightening surface so that it can move back and forth relative to the other side. The straightening surface is movably supported in this straightening surface support hole.

[0163] Therefore, the straightening surfaces 3 and 4 are positioned opposite the tip ends 29 and 31 of the clamping arms 1 and 2, and the hair is heated and straightened by the clamping motion of the clamping arms 1 and 2.

[0164] The orthodontic surface 3 comprises a heating plate (also called a plate), a ceramic heater 61, a magnetic plate (also called a magnet) 67, and a first spring 65, and is biased by a second spring 66.

[0165] The heating plate is formed from a lightweight material such as aluminum with high thermal conductivity, and is shaped like a rectangular plate when viewed from the opposite side. A housing is integrally provided behind the heating plate, and is movably supported by the support hole for the orthodontic body, allowing it to move back and forth relative to the orthodontic surface on the other side. This kind of movable support is also provided on the orthodontic surface.

[0166] The upper and lower walls of the housing are provided with engaging pieces (see Figure 18) to restrict the protruding movement of the heating plate beyond a certain point. The ceramic heater 61, the magnet plate 67, and the first spring 65 are housed within the housing. Therefore, the straightening surfaces 3 and 4 have a housing behind the heating plate, and within the housing, the magnet plate 67 as a magnet and the first spring 65 as a magnetic biasing means for biasing the magnet plate 67 toward the heating plate relative to the housing are provided. Furthermore, the magnet plate 67 as a magnet is arranged along the straightening surface on the rear side of the heating plate. In addition, within the housing, the ceramic heater 61 as a heating element that conducts heat from the back surface to the heating plate is provided between the back surface of the heating plate and the magnet plate 67.

[0167] The ceramic heater 61 has a rectangular plate shape, generates heat up to a maximum temperature of approximately 180°C, and conducts heat to the heating plate, and is electrically connected to the power cord side.

[0168] The magnet plate 67 is formed in a rectangular plate shape using a neodymium magnet with a strength of 15,000 gauss, and is arranged so that the south poles face each other on both straightening surfaces. However, the magnet plate 67 can also be arranged so that the north poles face each other. In addition to permanent magnets, the magnet plate 67 can also be an electromagnet or a combination of a permanent magnet and an electromagnet. Furthermore, it is preferable that the magnet plate 67 has a strength of 10,000 gauss or more.

[0169] The magnetic action of this magnet plate 67 provides ion, low-frequency, and water-activating effects. The ion effect generates negative ions through magnetic action. The low-frequency and water-activating effect is achieved by the low vibrations of the electromagnetic waves and electric field around the magnet plate 67, which periodically agitate the moisture within the hair, energizing and activating it. Furthermore, the magnetic action reduces the size of surrounding moisture clusters, making it easier for the moisture to penetrate the hair.

[0170] The first spring 65 is made of a leaf spring and biases the magnet plate 67 toward the back of the heating plate within the housing, causing the ceramic heater 61 to be in close contact with the back of the heating plate, while also stably supporting the magnet plate 67. The spring constant of the first spring 65 is such that it does not bend due to the reaction force between the magnet plates 67 when they are arranged with their south poles facing each other.

[0171] The second spring 66 is supported at the rear end of the housing portion and constitutes a corrective body biasing means that biases the corrective surfaces 3 and 4 and elastically adjusts the clamping state between the corrective surfaces 3 and 4. The second spring 66 is made of a leaf spring, with both ends set to be inclined, and its edges engage with the projection on the divided portion side in the left-right direction (longitudinal direction).

[0172] The specific configurations of the straightening surfaces 3 and 4 and the first and second springs 65 and 66 are as shown in Figure 18, for example. The straightening surfaces 3 and 4 are formed by providing a platinum (Pt) layer on the surface of an aluminum (Al) substrate. A titanium dioxide (TiO2) layer is formed between the surface of the substrate and the platinum layer, and nickel (Ni) layers are formed between the surface of the substrate and the titanium dioxide layer, and between the titanium dioxide layer and the platinum layer.

[0173] The platinum layer has both water-retaining and catalytic functions. Its water-retaining function allows it to collect moisture from the air and retain it in the hair. Its catalytic function allows it to break down harmful substances and organic compounds into atomic form.

[0174] The titanium dioxide layer has photocatalytic properties. This photocatalytic function allows harmful substances, atomized by the platinum layer, to be converted into harmless water and carbon dioxide. Furthermore, harmful substances can be neutralized by the ionic effect, which provides them with negative ions.

[0175] The nickel layer is intended to prevent oxidation of the aluminum substrate during the platinum plating process. The nickel layer is also intended to fix the platinum layer to the titanium layer.

[0176] In this embodiment, the platinum layer is formed to a thickness of 0.01 μm by electroplating. The platinum layer can also be formed by electroless plating. The titanium dioxide layer is formed to a thickness of 5 to 15 μm by vapor deposition. The titanium dioxide layer is formed when vapor-deposited titanium (Ti) has become titanium dioxide (TiO2) over time. Therefore, when the product is distributed, the vapor-deposited titanium (Ti) layer becomes the titanium dioxide layer. The nickel layer is formed to a thickness of 0.5 μm by coating.

[0177] Furthermore, the thicknesses of the platinum layer, titanium dioxide (TiO2) layer, and nickel (Ni) layer can be arbitrarily changed as long as their respective functions are maintained.

[0178] The functions of the platinum layer and titanium dioxide (TiO2) layer, along with the magnetic action of the magnet plate 67, effectively achieve oxidation and reduction, enabling permanent styling and other treatments while retaining moisture in the hair.

[0179] The housing is formed hollow along the flat back surface of the heating plate. Both ends of the housing are open to both ends of the straightening surfaces 3 and 4. Therefore, the first spring 65, the ceramic heater 61, and the magnet plate 67 can be inserted from the ends of the housing. An opening is provided in the rear wall of the housing. Grooves (grooves between the slightly widening portion and the projection of the lower leg in Figure 18(b)) are provided on the upper and lower edges of the rear wall for sliding support of the second spring 66.

[0180] Furthermore, the first spring 65 is made of leaf spring material. A curved portion is provided in the center of the first spring 65. A bent portion is provided at one end of the first spring 65, and a key-shaped portion is provided at the other end. The magnet plate 67 is supported by this bent portion and key-shaped portion.

[0181] Furthermore, the second spring 66 is made of leaf spring material. Both ends of the second spring 66 are formed on both sides of the flat central portion. Engaging portions are formed on both sides in the width direction of the central portion. The edges of both ends are provided with engaging portions for engaging with the projections on the divided portion side as described above.

[0182] During assembly, the magnet plate 67 is pre-supported by the first spring 65 through its bent portion and key portion. Next, the ceramic heater 61 is placed against the magnet plate 67, and these first spring 65, magnet plate 67, and ceramic heater 61 are housed together as an assembly in the housing. At this time, the assembly can be easily inserted and housed through the end opening of the housing.

[0183] After the assembly is housed in the housing, the curved portion of the first spring 65 flexes and generates a reaction force, causing the ceramic heater 61 to adhere tightly to the back surface of the heating plate. As a result, the assembly of the first spring 65, magnet plate 67, and ceramic heater 61 can be fixedly supported within the housing, making it easier to handle during assembly.

[0184] Next, the engaging portion of the second spring 66 is engaged with the groove in the rear wall of the straightening surfaces 3 and 4, and the central portion of the second spring 66 is attached to the rear wall of the straightening surfaces 3 and 4. This attachment is done by inserting it from the end of the rear wall, but it is also possible to fit the second spring 66 into the center of the rear wall by facing the center and prying it into place. Once the second spring 66 is attached to the rear wall, its central portion is pulled by the magnetic force of the magnet plate 67, allowing the second spring 66 to be positioned relative to the rear wall. Therefore, the second spring 66 can be moved freely relative to the rear wall and positioned by the magnetic force at the moved position, making it extremely easy to position the second spring 66.

[0185] Next, the assembly of the straightening surfaces 3 and 4 and the second spring 65 is supported in the straightening surface support holes of the divided portion, the other divided portions are joined together, and the predetermined locations are fastened to complete the assembly.

[0186] Next, we will explain how to use the aforementioned hair iron to straighten curly hair or correct artificial permanent waves.

[0187] First, when using the hair iron, the hair is first coated with the first solution, which is an aqueous solution mainly composed of mercapto compounds (reducing agents) such as thioglycolic acid and cysteine, to which basic substances such as ammonia, monoethanolamine, and triethanolamine are added to adjust the pH to 6-10. This coating reduces the disulfide bonds of cystine contained in the keratin protein in the hair, cleaving them into mercapto groups. After that, the hair is washed with water, dried sequentially with a hairdryer, etc., and then straightened using a hair iron heated to a temperature of 160-180°C.

[0188] Specifically, the gripping parts 21 and 23 of the clamping arms 1 and 2 are grasped, and force is applied by placing the thumb and index finger on the force application points 25 and 27, thereby clamping the hair between the hot plates of the straightening surfaces 3 and 4. Then, while maintaining this state, the clamping arms 1 and 2 are slid down towards the ends of the hair. As a result, the hair, which is clamped between the hot plates heated by the ceramic heater 61, is heated and straightened.

[0189] At this time, the platinum layers on the straightening surfaces 3 and 4 collect moisture from the air and retain it in the hair, preventing the hair from drying out during treatment with the hot plate. At this time, the magnetic action of the magnet plate 67 reduces the size of the surrounding moisture clusters, making it easier for them to penetrate the hair. In other words, the clusters of moisture from the air collected by the platinum layer are reduced, making it easier for them to penetrate the hair and increasing the hair's moisture retention. Furthermore, the catalytic function of the platinum layer can atomize harmful substances and organic compounds, and the photocatalytic function of the titanium dioxide layer can convert these atomized substances into harmless water and carbon dioxide. In addition, the photocatalytic function of the titanium dioxide layer can neutralize harmful substances by supplying them with negative ions.

[0190] At the same time, the magnetic action of the magnet plate 67 can generate negative ions. Furthermore, the low vibrations of the electromagnetic waves and electric magnetic field around the magnet plate 67 periodically agitate the moisture in the hair, energizing and revitalizing it.

[0191] In this way, the hair's moisture-retaining effect due to the platinum layer allows for reliable hair straightening with a hot plate while maintaining the hair's shine. By utilizing the synergistic effect (catalytic action) of the platinum layer and the titanium dioxide layer, it becomes possible to achieve hair styling while promoting hair health.

[0192] The synergistic effect of the platinum layer and titanium dioxide layer decomposes and neutralizes harmful substances, significantly improving the surrounding environment during hair styling. The synergistic effect of the platinum layer, titanium dioxide layer, and magnet plate 67 minimizes adverse effects on the hair during styling, such as heat and pressure damage, and further atomizes and decomposes harmful substances and organic compounds, resulting in the best possible hair styling results.

[0193] When using a hair iron after treating hair with the first solution of a perm solution, the molecular decomposition function of the platinum layer breaks down harmful substances and organic compounds into atomic form, and the catalytic and ionic effects generated by the oxidation-reduction action of the titanium dioxide layer enable deodorization of the chemical solution and decomposition of harmful substances.

[0194] Therefore, normally, after the second solution treatment of a perm, an ammonia odor remains in the hair. However, the platinum layer and titanium dioxide layer described above can eliminate the ammonia odor remaining after the perm treatment, making the environment for the hairstylist more optimal.

[0195] In addition, as the hair moves at a predetermined speed between the magnetic plates 67, which have their south poles or north poles facing each other, reduction energy is generated according to Fleming's right-hand rule. This energy is generated from the electrons of the magnetic poles of the right-rotating magnetic plate 67, and promotes the reduction action of the first liquid. Moreover, it also works to close the cuticle that forms the outer layer of the hair. When the cuticle is closed, it blocks ultraviolet rays from penetrating into the hair, thus preventing the hair from being damaged by ultraviolet rays.

[0196] Furthermore, this reduction energy reduces the size of the water clusters in the first solution. This reduction in cluster size increases the penetration of the first solution into the hair. As a result, the reducing action of the first solution is further promoted. Consequently, the treatment time, which carries the risk of damaging the hair, can be shortened, and hair damage can be suppressed.

[0197] Subsequently, a second solution consisting of an aqueous solution of an oxidizing agent such as sodium bromate and hydrogen peroxide is applied to the hair. As a result, the mercapto groups are oxidized, new disulfide bonds are generated in the hair, and this straight hair state can be fixed.

[0198] During such a procedure, when the magnetic plates 67 are set with their south poles facing each other, as the clamping motion of the clamping arms 1 and 2 brings the two corrective surfaces 3 and 4 closer together, the magnetic plates 67 repel each other, and simultaneously the second spring 66 bends in response to the repulsion, causing the magnetic plates 67 to become parallel to each other. As a result, the posture of the corrective surfaces 3 and 4 is also corrected, and they automatically become parallel. Therefore, when the corrective surfaces 3 and 4 come into close contact as the clamping motion progresses further, they can make contact in a parallel state from the very beginning of the close contact.

[0199] When the magnet plates 67 are set with their S and N poles facing each other, the magnet plates 67 attract each other, and at the same time, the second spring 66 bends in response to the attraction, causing the magnet plates 67 to become parallel to each other. Therefore, when the orthodontic surfaces 3 and 4 come into close contact, they can be in parallel contact from the beginning of the contact.

[0200] In this manner, when the two orthodontic surfaces 3 and 4 approach each other or begin to come into contact due to the clamping motion, the magnetic plate 67 and the second spring 66 work together to automatically correct the relative positions of the two orthodontic surfaces 3 and 4 so that they become parallel to each other.

[0201] Therefore, when the hair is held between the two straightening surfaces 3 and 4, the surfaces are kept parallel from the start of contact, effectively suppressing uneven ironing caused by localized contact. This unevenness occurs when the straightening surfaces 3 and 4 do not make surface contact, resulting in uneven heat distribution from the heating plates, making it difficult to create curls properly. In this invention, the magnet and spring ensure parallelism (surface contact between the plates), resulting in improved performance. That is, the magnet and spring keep the plates parallel, increasing the contact area between the hair and the plates when the hair is held, allowing for better ironing.

[0202] When the magnetic plate 67 is set with its S and N poles facing each other, the clamping motion causes the orthodontic surfaces 3 and 4 to come into close contact with each other rapidly. At this time, the second spring 66 can provide cushioning, allowing the procedure to be performed accurately.

[0203] By biasing the magnet plate 67 toward the heating plate side with the first spring 65, it can be stably supported with respect to the orthodontic surfaces 3 and 4. Therefore, the cooperation between the magnet plate 67 and the first spring 65 can more reliably correct the relative positions of the two orthodontic surfaces 3 and 4.

[0204] Furthermore, since a ceramic heater 61 is provided between the back surface of the heating plate and the magnet plate 67 within the housing as a heating element that conducts heat from the back surface to the heating plate, the biasing force of the first spring 65 can be used to bring the ceramic heater 61 into close contact with the back surface of the heating plate, and heat can be efficiently conducted from the ceramic heater 61 to the heating plate.

[0205] It should be noted that the present invention is not limited to the above embodiments. For example, the specific shape of the iron body is arbitrary, and the position of the temperature control device and temperature display unit is also arbitrary. The magnetic plate 67 may be provided on only one of the straightening surfaces 3 and 4, and the other may be composed of a magnetic panel attracted to the magnetic plate 67. The first spring 65 may also be omitted.

[0206] It is also possible to form a platinum layer, a titanium dioxide (TiO2) layer, and a nickel (Ni) layer on only one of the orthodontic surfaces 3 and 4. The titanium dioxide (TiO2) layer, the nickel (Ni) layer, or both can be omitted as desired.

[0207] Next, an embodiment of a hair iron with a difference in the straightening surface (processing surface) will be described. The present invention relates to a hair iron used for straightening hair, etc.

[0208] A hair iron consists of an iron body to which a power cord is connected. The power cord is equipped with a power plug, etc.

[0209] The iron body comprises a pair of clamping arms 1 and 2, and a pair of straightening surfaces 3 and 4. The clamping arms 1 and 2 are made of resin such as a polyester-based engineering plastic with a coefficient of thermal expansion of 8.8 × 10⁻⁵ cm / cm / °C, and their base ends 15 and 17 are rotatably connected to each other by a rotating shaft 19. Gripping portions 21 and 23 are provided in the middle of each clamping arm 1 and 2. These gripping portions 21 and 23 are formed relatively thick to facilitate gripping and are approximately the same thickness as the base ends 15 and 17.

[0210] The gripping portions 21 and 23 are provided with fulcrum points 25 and 27 formed on their tip ends, with inclined surfaces. These fulcrum points 25 and 27 are designed to allow the thumb or index finger to apply force when gripping the gripping portions 21 and 23. When viewed from above in Figure 9, the fulcrum points 25 and 27 are formed to be slightly larger than the entire gripping portions 21 and 23, making it easier to apply force with the thumb or index finger.

[0211] One or both of the gripping sections 21 and 23 are provided with, for example, a temperature control device and a temperature display unit. The temperature control device includes a temperature setting button, an on / off switch, etc., located on the surface of the gripping sections 21 and 23 for setting the temperature, and also includes a temperature control circuit (not shown) inside the gripping sections 21 and 23. The temperature control device's circuit is connected between the power cord and the ceramic heater 61 (described later), and performs AC phase control of the AC current to control the temperature of the ceramic heater 61 relative to the temperature set by the temperature setting button.

[0212] The temperature change resulting from the phase control is detected by a thermistor, and temperature correction is performed. The actual temperature based on thermistor detection is displayed by LEDs on temperature display units provided on the surfaces of the gripping parts 21 and 23. The tip ends 29 and 31 of the gripping arms 1 and 2 are formed to be thinner than the gripping parts 21 and 23 in the direction of alignment. Furthermore, the tip ends 29 and 31 are formed to be thinner than the gripping parts 21 and 23 and are set to be offset to one side relative to the gripping parts 21 and 23. Therefore, one surface 33 of the tip ends 29 and 31 protrudes to one side more than one surface 35 of the gripping parts 21 and 23, and both surfaces 33 and 35 are set to be continuous in a stepped manner by the inclined surface 37. The other surface 39 of the tip ends 29 and 31 is formed to be offset to one side in line with the one surface 33 and extends into the center side of the gripping parts 21 and 23.

[0213] The clamping arm 1 is formed in a hollow shape, and each divided section is joined together by a dividing line. These divided sections are fastened together at the tip ends 29, 31, the gripping sections 21, 23, and the base ends 15, 17 by fasteners such as screws. Fastening holes are formed through the divided sections at the tip ends 29, 31.

[0214] Multiple reinforcing ribs are provided within the hollow gripping portions 21 and 23. One of the clamping arms 1 has protrusions on the opposing sides of both arms 1 and 2, and the other clamping arm 2 has a recess into which the protrusion fits. The protrusion abuts against the bottom surface of the recess and functions as a stopper. These protrusions and recesses can be installed, for example, near the connecting member.

[0215] Thus, the clamping arm 1 is configured such that its base ends 15 and 17 are rotatably connected to each other, and the tip ends 29 and 31 perform a clamping action when the gripping parts 21 and 23 in the middle section are operated.

[0216] In the following explanation, since the tip ends 29 and 31 of the clamping arms 1 and 2 are symmetrical, tip end 29 will be described primarily, and the other tip end 31 will refer to the description of tip end 29.

[0217] The tip end 29 has a flat vertical wall surface and a flat bottom wall surface that house the core material 50 inside. The tip end 31 has surfaces similar to the flat vertical wall surface and flat bottom wall surface so that a symmetrical core material 50 can be housed there. The tip end 29 is also provided with a straightening surface support hole that movably supports the straightening surface so that it can move back and forth relative to the other side. The straightening surface is movably supported in this straightening surface support hole.

[0218] Accordingly, the straightening surfaces 3 and 4 are positioned opposite the tip ends 29 and 31 of the clamping arms 1 and 2, and the hair is heated and straightened by the clamping motion of the clamping arms 1 and 2. The straightening surface comprises a heating plate, a ceramic heater 61, a magnetic plate 67, and a first spring 65, and is biased by a second spring 66.

[0219] The heating plate is formed in a rectangular shape when viewed from the opposite side, using a lightweight material such as aluminum with high thermal conductivity. A housing is integrally provided behind the heating plate, and is movably supported by the straightening surface support hole, allowing it to move back and forth relative to the other side, the straightening surface. This same movable support is also provided on the straightening surface 4.

[0220] The upper and lower walls of the housing are provided with engaging pieces to restrict the protruding movement of the heating plate beyond a certain point. The ceramic heater 61, the magnet plate 67, and the first spring 65 are housed within the housing. Therefore, the straightening surfaces 3 and 4 are configured to have a housing behind the heating plate, and within the housing are the magnet plate 67 as a magnet and the first spring 65 as a magnetic biasing means for biasing the magnet plate 67 toward the heating plate relative to the housing.

[0221] Furthermore, a magnet plate 67 is positioned behind the heating plate, along the straightening surface. In addition, a ceramic heater 61 is provided within the housing between the back surface of the heating plate and the magnet plate 67, acting as a heating element to conduct heat from the back surface to the heating plate. The ceramic heater 61 is rectangular in shape, generates heat up to a maximum temperature of approximately 180°C, and conducts heat to the heating plate; it is electrically connected to the power cord. The magnet plate 67 is formed in a rectangular shape using a 15,000 gauss neodymium magnet or the like, and is positioned so that the south poles face each other on both straightening surfaces 3 and 4. However, the magnet plate 67 can also be positioned so that the north poles face each other. In addition, the magnet plate 67 can be a permanent magnet, an electromagnet, or a combination of a permanent magnet and an electromagnet. Furthermore, it is preferable that the magnet plate 67 has a strength of 10,000 gauss or more.

[0222] The magnetic action of this magnet plate 67 provides ion, low-frequency, and water-activating effects. The ion effect generates negative ions through magnetic action. The low-frequency and water-activating effect is achieved by the low vibrations of the electromagnetic waves and electric field around the magnet plate 67, which periodically agitate the moisture within the hair, energizing and activating it. Furthermore, the magnetic action reduces the size of surrounding moisture clusters, making it easier for the moisture to penetrate the hair.

[0223] The first spring 65 is made of a leaf spring and biases the magnet plate 67 toward the back of the heating plate within the housing, causing the ceramic heater 61 to be in close contact with the back of the heating plate, while also stably supporting the magnet plate 67. The spring constant of the first spring 65 is such that it does not bend due to the reaction force between the magnet plates 67 when they are arranged with their south poles facing each other.

[0224] The second spring 66 is supported at the rear end of the housing portion and constitutes a corrective body biasing means that biases the corrective surfaces 3 and 4 and elastically adjusts the clamping state between the corrective surfaces 3 and 4. The second spring 66 is made of a leaf spring, with both ends set to be inclined, and its edge engages with the projection on the divided portion side in the left-right direction (longitudinal direction of the hair iron).

[0225] The specific configuration of the straightening surfaces 3 and 4 and the first and second springs 65 and 66 is as shown in Figure 18, for example. The straightening surfaces are formed by mirror-finishing the surface of an aluminum (Al) substrate and providing a platinum (Pt) layer. The platinum layer is plated to a thickness of approximately 0.01 μm. In addition, a titanium dioxide (TiO2) layer is formed between the surface of the substrate and the platinum layer, and nickel (Ni) layers are formed between the surface of the substrate and the titanium dioxide layer, and between the titanium dioxide layer and the platinum layer.

[0226] One of the straightening surfaces 3 and 4 is made rough with an uneven surface to increase the contact points or contact area with the hair, while the other straightening surface is formed to be smoother than the other straightening surface.

[0227] In other words, only the straightening surface 3 is formed to a mirror finish, while the other straightening surface 4 is formed to have a rough texture with irregularities to increase the contact points or contact area with the hair. The straightening body 4 is formed by not finishing the surface of an aluminum (Al) base material to a mirror finish, but leaving the surface as is or adjusting the surface roughness, and then providing a platinum (Pt) layer. The surface irregularities of the platinum layer on the straightening surface 4 are 5 to 15 μm.

[0228] When adjusting the surface roughness, the surface can be formed to create grooves along the width direction of the straightening surface 4, that is, along the direction in which the straightening surface is slid against the hair during the hair treatment. For example, the grooves can be formed along the vertical direction in Figure 18(c). However, the grooves can also be formed diagonally in the width direction of the straightening surface 4, or in a diagonally curved shape. Furthermore, the grooves can be formed in a mesh-like pattern when viewed from the surface of the straightening surface 4.

[0229] The platinum layer on the straightening surface 4 is plated to a thickness of approximately 0.01 μm, similar to the straightening surface 3. Furthermore, a titanium dioxide (TiO2) layer is formed between the surface of the substrate and the platinum layer, and nickel (Ni) layers are formed between the surface of the substrate and the titanium dioxide layer, and between the titanium dioxide layer and the platinum layer.

[0230] The platinum layer has water-retaining and catalytic functions. Its water-retaining function allows it to collect moisture from the air and retain it in the hair. Its catalytic function allows it to break down harmful substances and organic compounds into atomic form. The titanium dioxide layer has a photocatalytic function. This photocatalytic function allows it to convert harmful substances broken down into atomic form by the platinum layer into harmless water and carbon dioxide. Furthermore, it can neutralize harmful substances by providing them with negative ions through an ionic effect.

[0231] The nickel layer is intended to prevent oxidation of the aluminum substrate during the plating of the platinum layer. The nickel layer is also intended to fix the platinum layer to the titanium layer. In this embodiment, the platinum layer is formed to a thickness of 0.01 μm by electroplating. The platinum layer can also be formed by electroless plating. The titanium dioxide layer is formed to a thickness of 5 to 15 μm by vapor deposition. The titanium dioxide layer is formed when vapor-deposited titanium (Ti) has become titanium dioxide (TiO2) over time. Therefore, when the product is distributed, the vapor-deposited titanium (Ti) layer becomes the titanium dioxide layer. The nickel layer is formed to a thickness of 0.5 μm by coating.

[0232] Furthermore, the thicknesses of the platinum layer, titanium dioxide (TiO2) layer, and nickel (Ni) layer can be arbitrarily changed as long as their respective functions are maintained. Through the functions of these platinum and titanium dioxide (TiO2) layers, and the magnetic action of the magnet plate 67, oxidation and reduction are effectively achieved, making it possible to perform permanent styling and other treatments while retaining moisture in the hair.

[0233] When the treatment is performed using straightening surfaces 3 and 4, the mirror-like surface of straightening surface 3 adjusts the surface of the hair, giving it a glossy finish. Furthermore, the hair enters the recessed areas of straightening surface 4, increasing the contact points or contact area with the hair. This increase in contact points or contact area disperses the force acting on the hair from straightening surface 4. In addition, the increased contact points or contact area also disperses the heat transmitted from straightening surface 4 to the hair.

[0234] In contrast, both of the orthodontic surfaces 3 and 4 are formed by finishing the surface of an aluminum (Al) substrate to a mirror finish and providing a platinum (Pt) layer of about 0.01 μm thick by plating.

[0235] When treatment is performed using these straightening surfaces 3 and 4, heat and force are concentrated on two points on either side of the cross-section of the hair where the straightening surfaces 3 and 4 make contact, causing the cross-section of the hair to easily collapse. In particular, the ends of the hair are more susceptible to the effects of concentrated heat and force because the hair gradually becomes thinner, which can result in dryness and exacerbate frizz at the ends, and the mirror-like straightening surfaces of the straightening surfaces 3 and 4 can actually damage the hair.

[0236] In contrast, according to the embodiment of the present invention, as described above, the heat and force acting on the hair can be dispersed by the straightening surface 4, thereby suppressing dryness and frizz in the finished product, and the mirror-like straightening surface 3 can give the hair a glossy finish.

[0237] The housing is formed hollow along the flat back surface of the heating plate. Both ends of the housing are open to both ends of the straightening surfaces 3 and 4. Therefore, the first spring 65, the ceramic heater 61, and the magnet plate 67 can be inserted from the ends of the housing. An opening is provided in the rear wall of the housing. Grooves (grooves between the slightly widening portion and the projection of the lower leg in Figure 18(b)) are provided on the upper and lower edges of the rear wall for sliding support of the second spring 66.

[0238] The first spring 65 is made of leaf spring material. A curved portion is provided in the center of the first spring 65. A bent portion is provided at one end of the first spring 65, and a key-shaped portion is provided at the other end. The magnet plate 67 is supported by this bent portion and key-shaped portion.

[0239] The second spring 66 is made of leaf spring material. Both ends of the second spring 66 are formed on both sides of the flat central portion. Engaging portions are formed on both sides of the central portion in the width direction. The edges of both ends are provided with engaging portions for engaging with the projections on the divided portion side as described above.

[0240] During assembly, the magnet plate 67 is pre-supported by the first spring 65 through its bent portion and key portion. Next, the ceramic heater 61 is placed against the magnet plate 67, and these first spring 65, magnet plate 67, and ceramic heater 61 are housed together as an assembly in the housing. At this time, the assembly can be easily inserted and housed through the end opening of the housing.

[0241] After the assembly is housed in the housing, the curved portion of the first spring 65 flexes and generates a reaction force, causing the ceramic heater 61 to adhere tightly to the back surface of the heating plate. As a result, the assembly of the first spring 65, magnet plate 67, and ceramic heater 61 can be fixedly supported within the housing, making it easier to handle during assembly.

[0242] Next, the engaging portion of the second spring 66 is engaged with the groove in the rear wall of the straightening surfaces 3 and 4, and the central portion of the second spring 66 is attached to the rear wall of the straightening surfaces 3 and 4. This attachment is done by inserting it from the end of the rear wall, but it is also possible to fit the second spring 66 into the center of the rear wall by facing the center and prying it into place. Once the second spring 66 is attached to the rear wall, its central portion is pulled by the magnetic force of the magnet plate 67, allowing the second spring 66 to be positioned relative to the rear wall. Therefore, the second spring 66 can be moved freely relative to the rear wall and positioned by the magnetic force at the moved position, making it extremely easy to position the second spring 66.

[0243] Next, the assembly of the straightening surfaces 3 and 4 and the second spring 66 is supported in the straightening surface support holes of the divided portion, the other divided portions are joined together, and the predetermined locations are fastened to complete the assembly.

[0244] Next, we will explain how to straighten curly hair or correct artificial permanent waves using the hair iron. First, when using the hair iron, the first solution is applied to the hair. This solution is an aqueous solution mainly composed of mercapto compounds (reducing agents) such as thioglycolic acid or cysteine, to which basic substances such as ammonia, monoethanolamine, and triethanolamine are added to adjust the pH to 6-10. This application reduces the disulfide bonds of cystine contained in the keratin protein in the hair, breaking them into mercapto groups. After that, the hair is washed with water and dried sequentially with a hairdryer, etc., and then the hair is straightened using a hair iron heated to a temperature of 160-180°C.

[0245] Specifically, the gripping parts 21 and 23 of the clamping arms 1 and 2 are grasped, and force is applied by placing the thumb and index finger on the force application points 25 and 27, thereby clamping the hair between the hot plates of the straightening surfaces 3 and 4. Then, while maintaining this state, the clamping arms 1 and 2 are slid down towards the ends of the hair. As a result, the hair, which is clamped between the hot plates heated by the ceramic heater 61, is heated and straightened.

[0246] At this time, the heat and force acting on the hair are dispersed by the straightening surface 4, which suppresses dryness and frizz in the finished product, and the mirror-like straightening surface 3 gives the hair a shine. The straightening surface 3 should be applied to the surface side of the hair. This gives the surface of the hair a shine. It is preferable to provide markings on the surfaces of the clamping arms 1 and 2 so that the distinction between the straightening surfaces 3 and 4 can be seen.

[0247] Furthermore, the platinum layers on the straightening surfaces 3 and 4 collect moisture from the air and retain it in the hair, preventing the hair from drying out during treatment with the hot plate. At this time, the magnetic action of the magnetic plate 67 reduces the size of the surrounding moisture clusters, making it easier for the moisture to penetrate the hair. In other words, the platinum layers reduce the size of the moisture clusters from the air that they collect, making it easier for the moisture to penetrate the hair and increasing the hair's moisture retention.

[0248] Furthermore, the catalytic function of the platinum layer can atomize harmful substances and organic compounds, and the photocatalytic function of the titanium dioxide layer can convert these atomized substances into harmless water and carbon dioxide. In addition, the photocatalytic function of the titanium dioxide layer can neutralize harmful substances by supplying them with negative ions.

[0249] At the same time, the magnetic action of the magnet plate 67 can generate negative ions. Furthermore, the low vibrations of the electromagnetic waves and electric magnetic field around the magnet plate 67 periodically agitate the moisture in the hair, energizing and revitalizing it.

[0250] In this way, the hair's moisture-retaining effect due to the platinum layer allows for reliable hair straightening with a hot plate while maintaining the hair's shine.

[0251] By utilizing the synergistic effect (catalytic action) between the platinum layer and the titanium dioxide layer, it becomes possible to style hair while promoting hair health. The synergistic action of the platinum layer and the titanium dioxide layer decomposes and neutralizes harmful substances, significantly improving the surrounding environment during hair styling.

[0252] The synergistic effect of the platinum layer, titanium dioxide layer, and magnet plate 67 minimizes adverse effects on the hair during styling, such as heat and pressure damage, and further atomizes and decomposes harmful substances and organic compounds, resulting in the best possible styling. When using a hair iron after treating the hair with the first solution of a perm solution, the molecular decomposition function of the platinum layer atomizes harmful substances and organic compounds, and the catalytic and ionic effects generated by the oxidation-reduction action of the titanium dioxide layer enable deodorization of the chemical solution and decomposition of harmful substances.

[0253] Therefore, normally, after the second solution treatment of a perm, an ammonia odor remains in the hair. However, the platinum layer and titanium dioxide layer described above can eliminate the ammonia odor remaining after the perm treatment, making the environment for the hairstylist more optimal.

[0254] In addition, as the hair moves at a predetermined speed between the magnetic plates 67, which have their south poles or north poles facing each other, reduction energy is generated according to Fleming's right-hand rule. This energy is generated from the electrons of the magnetic poles of the right-rotating magnetic plate 67, and promotes the reduction action of the first liquid. Moreover, it also works to close the cuticle that forms the outer layer of the hair. When the cuticle is closed, it blocks ultraviolet rays from penetrating into the hair, thus preventing the hair from being damaged by ultraviolet rays.

[0255] Furthermore, this reduction energy reduces the size of the water clusters in the first solution. This reduction in cluster size increases the penetration of the first solution into the hair. As a result, the reducing action of the first solution is further promoted. Consequently, the treatment time, which carries the risk of damaging the hair, can be shortened, and hair damage can be suppressed.

[0256] Subsequently, a second solution consisting of an aqueous solution of an oxidizing agent such as sodium bromate and hydrogen peroxide is applied to the hair. As a result, the mercapto groups are oxidized, new disulfide bonds are generated in the hair, and this straight hair state can be fixed.

[0257] During such a procedure, when the magnetic plates 67 are set with their south poles facing each other, as the two corrective surfaces 3 and 4 approach each other due to the gripping motion of the gripping arms 1 and 2, the magnetic plates 67 repel each other, and at the same time, the second spring 66 bends in response to the repulsion, causing the magnetic plates 67 to become parallel to each other. As a result, the posture of the corrective surfaces 3 and 4 is also corrected, and the corrective surfaces automatically become parallel. Therefore, when the corrective surfaces 3 and 4 come into close contact as the gripping motion progresses further, they can make contact in a parallel state from the very beginning of the close contact.

[0258] When the magnet plates 67 are set with their S and N poles facing each other, the magnet plates 67 attract each other, and at the same time, the second spring 66 bends in response to the attraction, causing the magnet plates 67 to become parallel to each other. Therefore, when the orthodontic surfaces 3 and 4 come into close contact, they can be in parallel contact from the beginning of the contact.

[0259] In this manner, when the two orthodontic surfaces 3 and 4 approach each other or begin to come into contact due to the clamping motion, the magnetic plate 67 and the second spring 66 work together to automatically correct the relative positions of the two orthodontic surfaces 3 and 4 so that they become parallel to each other.

[0260] Therefore, when the hair is held between the two straightening surfaces 3 and 4, the surfaces are kept parallel from the start of contact, effectively suppressing uneven ironing caused by localized contact. This unevenness occurs when the straightening surfaces 3 and 4 do not make surface contact, resulting in uneven heat distribution from the heating plates, making it difficult to create curls properly. In this invention, the magnet and spring ensure parallelism (surface contact between the plates), resulting in improved performance. That is, the magnet and spring keep the plates parallel, increasing the contact area between the hair and the plates when the hair is held, allowing for better ironing.

[0261] When the magnetic plate 67 is set with its S and N poles facing each other, the clamping motion causes the orthodontic surfaces 3 and 4 to come into close contact with each other rapidly. At this time, the second spring 66 can provide cushioning, allowing the procedure to be performed accurately.

[0262] By biasing the magnet plate 67 toward the heating plate side with the first spring 65, it can be stably supported with respect to the orthodontic surfaces 3 and 4. Therefore, the cooperation between the magnet plate 67 and the first spring 65 can more reliably correct the relative positions of the two orthodontic surfaces 3 and 4.

[0263] Furthermore, since a ceramic heater 61 is provided between the back surface of the heating plate and the magnet plate 67 within the housing as a heating element that conducts heat from the back surface to the heating plate, the biasing force of the first spring 65 can be used to bring the ceramic heater 61 into close contact with the back surface of the heating plate, and heat can be efficiently conducted from the ceramic heater 61 to the heating plate.

[0264] It should be noted that the present invention is not limited to the above embodiments. For example, the specific shape of the iron body is arbitrary, and the position of the temperature control device and temperature display unit is also arbitrary. The magnetic plate 67 may be provided on only one of the straightening surfaces 3 and 4, and the other may be composed of a magnetic panel attracted to the magnetic plate 67. The first spring 65 may also be omitted. One of the straightening surfaces 3 and 4 may be formed as a convex curved surface and the other as a concave curved surface.

[0265] It is also possible to form a platinum layer, a titanium dioxide (TiO2) layer, and a nickel (Ni) layer on only one of the orthodontic surfaces 3 and 4. The titanium dioxide (TiO2) layer, the nickel (Ni) layer, or both can be omitted as desired.

[0266] Example 2 We investigated whether hydrogen peroxide could actually be removed using this type of hair iron.

[0267] <Decomposition temperature of hydrogen peroxide> Approximately 1g of 100% human white hair (product number: BM-WA, manufactured by Beaulux) was bleached to create an evaluation hair bundle with residual hydrogen peroxide inside the hair. The decomposition temperature of hydrogen peroxide inside the hair was determined using the following method, and this temperature was defined as the "hydrogen peroxide removal mode".

[0268] <Measurement of Hydrogen Peroxide Concentration at Ironing Temperature> The bleach 1 agent of Formulation Example 1 and the bleach 2 agent of Formulation Example 2 were mixed at a ratio of 1:1 until uniform, applied to the hair bundle, and left at room temperature for 30 minutes. Then, it was rinsed with warm water, washed with our Wool Shampoo (trade name: Nano Supply Cleansing Shampoo OT), rinsed with warm water, and dried with a dryer. Then, the hair iron of the present invention was set at 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180 °C and the hair bundle was passed through three times. Then, each hair bundle was wetted with water, and a hydrogen peroxide concentration test paper (Mitsubishi Gas Chemical Trading Co., Ltd.: Hydrogen Peroxide Concentration Test Paper) was pressed against the tip, middle, and root of the hair bundle of the hair bundle for 5 seconds, and visual concentration measurement and color measurement with a spectrophotometer were performed. Table 1 shows Formulation Example 1 (bleach 1 agent). Also, Table 2 shows Formulation Example 2 (bleach 2 agent).

[0269]

Table 1

[0270]

Table 2

[0271] <Judgment of Hydrogen Peroxide Decomposition Temperature in Hair Iron> Next, the hydrogen peroxide concentration test paper was visually confirmed and shown in Table 3.

[0272]

Table 3

[0273] The L*a*b* color space was measured using a hydrogen peroxide concentration test strip with a spectrophotometer (model: CM-36dG, manufactured by Konica Minolta), and the results are shown in Table 4 and Figure 7. The hydrogen peroxide concentration test strip turns bluer at higher hydrogen peroxide concentrations. Therefore, when measured with a spectrophotometer, a lower b* value indicates a higher hydrogen peroxide concentration. From Tables 3 and 4, temperatures above 150°C, where the hydrogen peroxide concentration decreases significantly, are appropriate. For this reason, the "hydrogen peroxide removal" mode can be set to 150°C.

[0274] [Table 4]

[0275] As a result, it was found that it is possible to efficiently reduce hydrogen peroxide while operating a hair iron, thereby minimizing damage to the hair.

[0276] While the description above shows a hair iron with an asymmetrical design, the shape can be modified depending on the intended use. For example, a straightener can be made basically symmetrical.

[0277] Example 3 Next, we investigated the effect of applying a permanent wave agent to the hair iron of the present invention. Specifically, we investigated whether it is possible to form and fix curls in the hair by heating only one side of the hair iron of the present invention and combining the hair iron with a permanent wave agent.

[0278] <Curl formation in perm wave solutions and hair iron treatments> Approximately 1g of 100% human black hair (product number: BS-BA, manufactured by Beaulux Co., Ltd.) was used as the hair bundle for evaluating curl formation. The curl formation state was confirmed using the following method.

[0279] The black hair bundle was washed with our company's shampoo (trade name: Nano Supply Cleansing Shampoo OT), rinsed with warm water, and towel-dried. Next, 3 g of the permanent wave agent of Formulation Example 1 was applied to the hair bundle and left at room temperature for 10 minutes. Table 5 shows the content of the permanent wave agent of Formulation Example 1.

[0280]

Table 5

[0281] In the permanent wave agent of Formulation Example 1, ammonium thioglycolate and thioglycerol were used as reducing agents, aqueous ammonia, sodium hydroxide, sodium hydrogen carbonate, and ammonium hydrogen carbonate were used as alkali agents, cetyltrimethylammonium chloride was used as a cationic surfactant, concentrated glycerin was used as a wetting agent, and tetrasodium edetate tetrahydrate was used as a sequestering agent.

[0282] After that, it was rinsed with warm water, shampooed with our company's oolong shampoo, and dried with a dryer. Then, the hair iron (single-heat hair iron) of this development was set to 180 °C and passed through the hair bundle 5 times. After that, 3 g of the hair setting agent of Formulation Example 2 was applied to the hair bundle and left at room temperature for 10 minutes. Table 6 shows the content of the hair setting agent of Formulation Example 2.

[0283]

Table 6

[0284] Also, in the hair setting agent of Formulation Example 2, sodium bromate was used as an oxidizing agent, cetyltrimethylammonium chloride was used as a cationic surfactant, and disodium edetate was used as a sequestering agent.

[0285] Finally, it was rinsed with warm water and dried with a dryer. For curl formation, the hair bundle lengths before and after the application of the permanent wave agent and the hair iron were measured. The results are shown in Table 7.

[0286] [Table 7]

[0287] The more curl is formed, the shorter the length of the hair strands becomes. As a result, it was found that excellent curl formation could be obtained with both single-sided and double-sided heating irons. Although both were good, in the combination of permanent wave solution and hair iron, it was found that single-sided heating irons were able to form curls better than double-sided heating irons.

[0288] Example 4 <Hair moisture content after ironing> A hair bundle of 100% human black hair (product number: BS-BA, manufactured by Beaulux Co., Ltd.), weighing approximately 1g, was used as the hair moisture content measurement bundle. The moisture content was confirmed using the following method.

[0289] The hair iron (single-heat iron) of the present invention was set to 180°C and passed through a strand of black hair three times. The treated strand was cut into 5mm wide strips and its weight was measured. The cut hair was dried at 65°C for 40 minutes and its weight was measured. Subsequently, it was dried at 180°C for 30 minutes and its weight was measured again. The moisture content was calculated from the weight before drying and the weight after drying at 180°C. The results are shown in Table 8.

[0290] [Table 8]

[0291] Table 8 and Figure 4 show that hair strands treated with a single-sided iron had a higher moisture content than hair strands treated with a double-sided iron. With a double-sided iron, heat is applied to the hair from both sides, causing moisture to escape easily. On the other hand, with a single-sided iron, heat is applied to the hair from only one side, making it more difficult for moisture to escape. Also, water droplets form when the iron is passed over the hair. While the moisture in the hair heated by the heating plate evaporates, it is cooled by the non-heating plate and forms water droplets without evaporating. Therefore, these water droplets can return to the hair, providing moisture. Thus, if you want to curl your hair while suppressing moisture evaporation and retaining moisture, you can use a hair iron that heats only one side. If this is not necessary, you can use a hair iron that heats both sides.

[0292] Furthermore, in this invention, by changing the plate shape, it is possible to straighten hair, even though some conventional hair straighteners are not capable of doing so. It has also been found that curls can be created using both double-sided heating irons and single-sided heating irons in the hair straightener and permanent wave treatment.

[0293] Furthermore, in the above explanation, as an example of an alternative embodiment, an example was shown in which one of the processing surfaces (clamping surfaces) is rounded and the other is flat, with the rounded side being the heating element. However, in this embodiment, a hair iron (see Figure 6) was used in which both sides are plates of the same shape, with about 3 / 4 being flat and the remaining 1 / 4 being gently curved. When gripping the hair iron used in this embodiment in the same way as in the example where the rounded side is the heating element, the heating element is located on the opposite side compared to the example where the rounded side is the heating element. To move the hair iron in the same way, the iron will need to be flipped over and gripped.

[0294] In this embodiment, it is possible to efficiently form curls even when using a hair iron with flat plates as shown in Figure 6. Generally, even with flat plates, it is possible to create some curls depending on the stylist's technique, but the hair tends to get caught between the flat plates, so it first becomes straight and difficult to curl. However, surprisingly, it has been found that it is possible to form curls even with such flat plates according to the present invention. Furthermore, it has been found that plates with heating elements on both sides have the advantage that even if the straightening and curling of hair in a straightening treatment fails, the hair can be straightened again with the flat surface and restyled. [Explanation of Symbols]

[0295] 1. First Arm 2. Second Arm 3. First clamping surface 4. Second clamping surface 5. Hydrogen peroxide reduction device 6. Temperature control device 7. Connecting Members 8. Connecting Members 9 switches 15,17 Proximal end 19 Rotation axis 21,23 Gripping part 25,27 Point of force 29,31 Tip side 33 One side of the tip, 29, 31 35 One side of the gripping parts 21, 23 37 Both sides 33,35 are inclined surfaces 39 Other surfaces of the tip sides 29, 31 50 Core material 51 Plates and others 60 Plate (Heating Section) 61. Ceramic heater (heat source) 62 Mica plate 63 Bimetal 64 Bimetal presser foot 65. Leaf spring for holding magnets in place 66 Plate spring (biasing part) 67 Magnets 70 Components within the plate 80 Bulge

Claims

1. A first arm and a second arm are connected so as to be openable and closable, A first clamping surface provided on the inside of the first arm, A second clamping surface provided on the inside of the second arm, A hair iron having a heating element for heating hair provided on at least one of the first or second clamping surfaces.

2. The hair iron according to claim 1, characterized in that the surface of the heating element has a curved surface.

3. The hair iron according to claim 1 or 2, characterized in that the surface of the heating element has a substantially flat surface.

4. The hair iron according to claim 1, characterized in that the plate shape constituting the surface of the heating portion is different from or the same as the plate shape formed on the first or second clamping surface corresponding to the heating portion.

5. The hair iron according to claim 2, characterized in that the curved surface occupies a range of 1 / 2 to 1 / 4 of the entire surface of the heating portion.

6. The hair iron according to claim 1, characterized in that the heating element has a layer made of at least platinum.

7. The hair iron according to claim 1, characterized in that the heating element further has a layer made of at least one of nickel, copper, electroless nickel, or aluminum.

8. The hair iron according to claim 6, characterized in that the thickness of the platinum layer is 0.05 to 1.0 μm.

9. The hair iron according to claim 1, characterized in that the surface of the heating element is polished with a buff.

10. The hair iron according to claim 1, characterized in that the first and / or second arm is equipped with a hydrogen peroxide reduction device.

11. Furthermore, the hair iron according to claim 1 or 10 is characterized in that the first and / or second arm is provided with a temperature control device.

12. The hair iron according to claim 10, characterized in that the hydrogen peroxide reduction device reduces hydrogen peroxide by setting a temperature.

13. The hair iron according to claim 12, characterized in that the temperature is 80°C or higher.

14. The hair iron according to claim 12, characterized in that the temperature is 140°C to 180°C.

15. Furthermore, the hair iron according to claim 1 is characterized by having a connecting member that connects the first arm and the second arm.

16. The hair iron according to claim 10, characterized in that the hydrogen peroxide reduction device and the temperature control device are integrated.

17. The hair iron according to claim 1, characterized in that the first and / or second arm is provided with switches for the hydrogen peroxide reduction device and the temperature control device.

18. The hair iron according to claim 15, characterized in that the connecting member is one or more.

19. The arms, whose base ends are rotatably connected to each other, and whose tip ends perform a clamping action when the gripping part in the middle is operated, A hair iron comprising a processing unit positioned opposite the tip of the arm and which heats the hair with a hot plate during the clamping operation while clamping and straightening the hair with a processing surface, The hair iron according to claim 6, characterized in that the platinum layer is provided on the surface of the base material.

20. The hair iron according to claim 19, characterized in that a titanium layer is formed between the surface of the substrate and the platinum layer.

21. The hair iron according to claim 20, characterized in that a nickel layer is formed between the surface of the substrate and the titanium layer, and between the titanium layer and the platinum layer.

22. The hair iron according to claim 19, characterized in that a magnet is arranged along the first processing surface on the back side of at least one of the heating plates.

23. The arms, whose base ends are rotatably connected to each other, and whose tip ends perform a clamping action when the gripping part in the middle is operated, A hair iron comprising a processing unit positioned opposite the tip of the arm and which heats the hair with a hot plate during the clamping operation while clamping and straightening the hair with a processing surface, At least one of the processing units is movably supported on the arm via a processing unit biasing means so that it can move back and forth within a predetermined range relative to the other side from the state in which it is attached to the arm. A magnet is placed on the back side of at least one of the heating plates, along the processing surface. The hair iron according to claim 1, characterized in that the processing biasing means is bent in response to the repulsive or attractive force between the magnets or the adsorption force of the other magnet toward the heating plate side, thereby allowing the processing unit to move forward and backward from the mounted state and correct its relative position.

24. The processing unit includes a housing behind the heating plate, The hair iron according to claim 23, characterized in that the housing portion is provided with the magnet and a magnet biasing means for biasing the magnet toward the heating plate side relative to the housing portion.

25. The hair iron according to claim 24, characterized in that a heating element is provided between the back surface of the heating plate and the magnet within the housing, which conducts heat from the back surface to the heating plate.

26. A hair iron comprising an arm that performs a clamping operation by gripping the gripping part, and a processing part positioned opposite the arm that heats the hair during the clamping operation while clamping and straightening it with a processing surface, The hair iron according to claim 1, characterized in that one of the processing surfaces of the processing unit is the same as the surface of the base material, or has an uneven surface with adjusted surface roughness, and the hair enters into the recesses of the processing surface in a cross-sectional view, increasing the contact points or contact area with the hair, dispersing the force acting on the cross-section of the hair from the processing unit, and dispersing the heat transmitted from the processing surface to the hair, and the other processing surface is formed to be a mirror surface of the base material.

27. The hair iron according to claim 26, characterized in that one or both of the treated surfaces of the aforementioned treatment area are formed by providing a platinum layer on their surface.

28. The hair iron according to claim 26, characterized in that a titanium layer is formed between the surface of the substrate and the platinum layer.

29. The hair iron according to claim 26, characterized in that a nickel layer is formed between the surface of the substrate and the titanium layer, and between the titanium layer and the platinum layer.

30. The hair iron according to claim 26, characterized in that one of the treated surfaces has an uneven surface with irregularities of 5 to 15 μm.

31. The hair iron according to claim 26, characterized in that a magnet is arranged along the back side of the processing surface.

32. At least one of the processing units is movably supported on the arm via a processing unit biasing means so that it can move back and forth within a predetermined range relative to the other side from the state in which it is attached to the arm. A magnet is placed along the back side of the processing surface, The hair iron according to claim 26, characterized in that the biasing means for the processing unit is bent in response to the repulsive or attractive force between the magnets or the attractive force of the other magnet toward the processing unit side, thereby allowing the processing unit to move forward and backward from the mounted state and correct its relative position.

33. The processing unit includes a housing on the rear side of the processing surface, The hair iron according to claim 32, characterized in that the housing portion is provided with the magnet and a magnetic biasing means for biasing the magnet toward the processing surface side relative to the housing portion.

34. The hair iron according to claim 33, characterized in that a heating element for heating is provided between the back side of the processing surface and the magnet within the housing.

35. A method for perming hair with an iron, comprising the steps of: applying a permanent wave agent comprising a reducing agent, an alkaline agent, a surfactant, a chelating agent, and a conditioning agent; and performing an iron perm treatment after applying the permanent wave agent.

36. The iron perm method according to claim 35, characterized in that the iron perm treatment is performed using a hair iron as described in any one of claims 1 to 34.

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