KR101170342B1 - Hair is protected mobaltteutkkim seuteureyiteupeomeoyong hair iron - Google Patents

Abstract

The present invention relates to a hair iron for straight perm without hair bleeding at the time of perm operation, and a pair of extruded heat generating plates (4,4 ') provided opposite to upper and lower rods (2, 2') of the hair iron, respectively. It is made to provide a hair iron configured to have a pair of hair-tear prevention protrusions (5,5 ') to have a hair-tear prevention gap (s) on both sides of the longitudinal surface of any one of the extruded heating plate (4). .

Description

Hair iron for straight permer to prevent hair tear {Hair is protected mobaltteutkkim seuteureyiteupeomeoyong hair iron}

The present invention relates to a hair iron for straight perm, and more particularly for straight perm which is improved to prevent hair tear in the extruded heating plate to be the perm by receiving the heat energy by direct contact with the hair during the perm operation. It's about hair irons.

In general, a straight iron hair iron has a pair of upper and lower rods, which are divided into long upper rods and lower rods whose tails are used as handles, and transfer heat energy of an electric heater to the front and lower rods. It is provided with a heating plate that generates heat.

Therefore, during the permper procedure, the perm operation is performed while moving the hair iron from the hair on the scalp side to the end of the hair. During the perm operation, the procedure acts to move while pressing the heating plates on both sides strongly.

At this time, since the amount of hair decreases toward the end of the hair, when the upper and lower heating plates reach the tip of the hair, the end of the hair is squeezed between the upper and lower heating plates, thereby causing hair pulsation.

And the heating plate is made of a metal for durability, one is divided into one type is to use the extrusion plate to extrude the heating plate and the extruded heating plate is used to cut to the required length, the other, die casting It can be divided into a heating plate produced by die casting molding by a mold.

In order to facilitate the understanding of the present invention, a heating plate obtained by being extruded by an extrusion die will be referred to as an extruded heating plate, and a heating plate obtained by being molded by a die casting mold will be referred to as a molded heating plate.

Therefore, it is already known that the manufacturing cost of the product manufactured by molding is approximately 2-5 times more expensive than the products manufactured by extrusion.

Therefore, since the manufacturing cost of the molded heating plate is very high compared to the manufacturing cost of the extruded heating plate, the heating plate of the hair iron is mainly adopted by the extruded heating plate, and the prior art is a heating plate that is implemented in the Republic of Korea Utility Model Publication No. 20-0369882 For example.

The purpose of the present invention is to avoid hair bleeding with a relatively very inexpensive extruded heating plate rather than a molded heating plate.

(Document 1) KR20-0369882Y12004.12.16

An object of the present invention is to provide an improved straight iron hair iron to prevent hair bleeding during perm treatment in the extruded heating plate of the hair iron.

Still another object of the present invention is to provide a cheaper supply of hair iron having a hair tearing prevention function.

The present invention provides a hair iron having a pair of extruded heat generating plates provided on the inner surface of the upper and lower rod end portions that are rotatably coupled to the hinge shaft and having a flat surface, a heater mounting groove portion, and a space portion on an inner surface thereof; The pair of extruded heat generating plate is characterized in that it comprises a pair of hair anti-peeling protrusions to have a hair preventing gap on both sides of the longitudinal surface of the extruded heat generating plate.

It is another feature that the punch groove for protruding the hair-proofing protrusions on the inner surface of the extruded heat generating plate.

Punch seat groove for protruding the hair-break prevention protrusions is on the inner surface, it is another feature that there is a punch groove inside the punch seat groove.

In order to protrude the hair preventing protrusions, the inner surface has a long punch seat groove in the longitudinal direction, and the punch seat grooves have a punch groove corresponding to the hair sticking prevention protrusions.

The hair-break prevention protrusion is characterized in that the punch grooves are formed on both sides of the extruded heat generating plate, so that the upper and lower edge portions are deformed to protrude.

The hair-break preventing protrusion is characterized in that it is made to protrude by forcibly inserting a press-fitting pin larger than that in the pinhole formed on each side of the extruded heat generating plate.

The hair-break preventing protrusion is characterized in that it is made to be provided on both sides of the surface by removing the middle portion of the micro-projections provided to extend in the longitudinal direction during extrusion of the extruded heating plate.

It is another feature that the hair-break preventing protrusion is triangular in shape.

The hair-break prevention protrusion is characterized in that the thermosetting resin printed layer applied to the surface of the extruded heat generating plate is cured and then protruded by coating the coating layer thereon.

The thermosetting resin printing layer is another feature of the ceramic.

The hair peeling prevention protrusion is characterized in that the remaining surface other than the surface to which the masking tape is attached to the corrosion of the metal corrosion solution is formed so that the portion attached to the masking tape protrudes.

The hair-break preventing protrusion is characterized in that it is made to be provided by coating and curing the ceramic paint to the hole of the masking tape attached to the surface.

The hair tear prevention protrusion is formed in a circular shape within 1.5mm in a plane and is characterized in that it is made to protrude to a height of 0.03-0.5mm.

The hair tear prevention protrusion is formed to protrude in accordance with the side of the extruded heat generating plate and is characterized in that it is made to protrude to a height of 0.03-0.5mm.

The present invention has the effect of providing a hair iron that prevents hair bleeding at the time of permeation and provides an effect that the function of the hair iron is significantly improved.

In addition, since the initial production cost is to prevent hair from being extruded by a low heat extruded heating plate, there is an effect that the hair iron having a function of preventing hair from being able to be distributed more cheaply.

1 is an overall configuration diagram of a hair iron according to the present invention,
2 is a perspective view showing an extruded heating plate according to the present invention,
3 is a front configuration view of an extruded heat generating plate according to the present invention;
Figure 4 is a side configuration view of the extruded heat generating plate according to the present invention,
5 is an explanatory diagram showing a state of the procedure by the extruded heating plate according to the present invention,
Figure 6 is a side view showing another embodiment of the present invention,
7 is a manufacturing process diagram of the first embodiment according to the present invention;
8 is a side view of the extruded heat generating plate according to the first embodiment of the present invention;
9 is a manufacturing process diagram of a second embodiment according to the present invention;
10 is another manufacturing process of the second embodiment of the present invention;
11 is a perspective view of an extrusion heating plate according to a second embodiment of the present invention;
12 is a side cross-sectional view of an extruded heat generating plate according to a second embodiment of the present invention;
13 is a manufacturing process diagram of a third embodiment according to the present invention;
14 is a side cross-sectional view of an extruded heat generating plate according to a third embodiment of the present invention;
15 is a manufacturing process diagram of the fourth embodiment according to the present invention;
16 is a perspective view of an extrusion heating plate according to a fourth embodiment of the present invention;
17 is a manufacturing process diagram of the fifth embodiment according to the present invention;
18 is a perspective view of an extrusion heating plate according to a fifth embodiment of the present invention;
19 is a perspective view of the extrusion state of the extruded heating plate of the sixth embodiment according to the present invention;
20 is a front view of the extruded heating plate illustrating the manufacturing process of the sixth embodiment of the present invention;
21 is a perspective view and a side view of an extruded heat generating plate according to a sixth embodiment of the present invention;
22 is a configuration of the manufacturing process and the extruded heating plate of the seventh embodiment according to the present invention,
23 is a configuration diagram of the manufacturing process and the extruded heating plate of the eighth embodiment according to the present invention;
24 is a configuration of the manufacturing process and the extrusion heating plate of the ninth embodiment according to the present invention.

When described in more detail on the basis of the accompanying drawings the preferred embodiment of the present invention.

1 shows a hair iron for a straight perm employing an extruded heating plate according to the present invention.

The hair iron has an upper rod 2 and a lower rod 2 'of a long shape that are rotated about the hinge axis 1.

The upper and lower rods 2 and 2 'are respectively provided with a rear end portion of a handle portion, and a pair of extruded heat generating plates 4 and 4' which are heated by receiving heat energy by the electric heater 3 inside the front end portion, respectively. have. Reference numeral 3a denotes an electric cable.

The pair of extruded heat generating plates 4, 4 'are provided so that the respective surfaces 4a face each other, and the surfaces 4a are planar.

The extruded heating plates 4 and 4 'are extruded by a metal material having tensile strength and tensile strength, such as aluminum or iron.

The present invention is provided with each of the pair of extruded heat generating plates (4, 4 '), each of the hair-break prevention protrusions (5, 5') on both sides of the surface (4a) of any one of the extruded heat generating plates (4).

The pair of hair tear prevention protrusions (5,5 ') is made to have a very small size of about 0.03-0.5mm in diameter and within about 1.5mm in diameter when viewed in plan as shown in FIG.

However, depending on the size of the hair iron, the size of each of the large, medium, and small, the size of the pair of hair tear prevention protrusions (5, 5 ') may also vary.

The pair of hair-break preventing protrusions 5 and 5 'are provided at each end at one end in the longitudinal direction of the extruded heat generating plate 4, respectively.

3 and 4, when the extruded heat generating plate 4 on the upper side and the extruded heat generating plate 4 'on the lower side come into contact with each other, a pair of hair-tightening protrusions 5 and 5' are extruded on the lower side. Since it comes into contact with the surface 4a of the heating plate 4 ', a hair pulling prevention gap s corresponding to the height of the hair pulling preventing protrusions 5 and 5' is formed between the upper and lower extruded heating plates 4. .

As shown in FIG. 3, the hair passage and the minimum space portion g are formed between the pair of hair puffing protrusions 5 and 5 ′.

Accordingly, during the straight perm treatment, as shown in (a) of FIG. 5, the perm operation is performed while moving the hair iron from the hair (h) on the scalp (k) side toward the end of the hair (h '). The extruded heating plates (4, 4 ') on both sides of the pressing operation is to perform a procedure to move.

At this time, the hair (h) is in a state where the amount of hair decreases toward the end of the hair (h ') in the past, when the upper and lower extruded heating plates (4,4') reaches the hair end (h '), the upper and lower The tip of the hair (h ') was squeezed between the extruded heating plate (4, 4') of the hair was generated.

However, in the present invention, when the upper and lower extruded heat generating plates 4 and 4 'reach the hair ends h' as shown in FIG. 5 (b), the upper and lower extruded heat generating plates 4 and 4 'are disposed between the upper and lower extruded heat generating plates 4 and 4'. Since the hair pain and the minimum space (g) is the hair tip (h ') is not tangled and passes through smoothly so that no hair tear occurs.

And since hair (h) continues to grow, it can be said to be healthy hair state toward the scalp (k) side, and damaged hair and extreme damaged hair state toward the hair end (h '), and thus hair tip (h') Is a state of extreme damage and fragile state is weak state.

Therefore, when the upper and lower extruded heat generating plates 4, 4 'reach the hair ends h', the hair tip prevention protrusions 5, 5 'have a strong pressure on the hair ends h'. Will not be.

Therefore, as well as the end of the hair (h ') is not broken, as well as not receiving all of the high-temperature heat energy to prevent further damage to the extreme damage hair.

In addition, the hair iron is installed so that the extruded heat generating plates 4, 4 'are supported by the elastic member 6, as shown in (a), (b) of FIG. Sometimes it is configured to be movable.

In this case, as shown in FIG. 6 (b), the extruded heat generating plates 4 and 4 'are inclined toward the exit of the hair tip h', so that the hair passing space g is wider on the opposite side. Becomes

Therefore, the top and bottom of the extruded heat generating plate (4, 4 ') is not tangled by the hair end (h') is to pass more smoothly so that no hair bleeding phenomenon occurs at all.

And a pair of hair tear prevention protrusions (5, 5 ') is not necessarily provided only in the upper extruded heat generating plate (4) can be provided in the lower extruded heat generating plate (4') in some cases. However, it is preferable to provide the upper extruded heat generating plate (4) because it is difficult to visually identify when the hair tear prevention protrusions (5, 5 ') are provided on the upper extruded heat generating plate (4).

Accordingly, the present invention is constructed in various embodiments to provide the extruded heat generating plate 4 with a pair of hair puffing protrusions 5 and 5 '.

7 and 8 show a first embodiment of the present invention.

Referring to FIG. 7, the extruded heat generating plate 4 is extruded in a state in which the surface 4a is flat and the rear portion has a heater mounting groove 41 and a space 42 as shown in FIG. 7A. Have

The extruded heat generating plate 4 is inserted into the seating groove 101 of the base 100 as shown in (b) of FIG. 7 and then punched through the space 42 of the extruded heat generating plate 4 as shown in FIG. Insert 110 and hit the inner surface.

Therefore, as the punch groove 43 is formed on the inner surface of the extruded heat generating plate 4, the surface 4a of the portion where the protrusion forming groove 102 is located is deformed to protrude by the punching force of the punch 110. The tear prevention protrusions 5 are formed to protrude.

And although not shown in Figure 7 another hair tear prevention protrusion (5 ') is to be formed to protrude in the same process as described above.

Next, the surface 4a of the extruded heat generating plate 4 is subjected to a clean surface treatment, and then has a surface coating process. The surface coating process is to make a ceramic coating on the surface (4a) of the extruded heat generating plate 4 or to be anodizing surface treatment or titanium coating.

The ceramic coating and anodizing surface treatment or titanium coating is known in the art, so a detailed description thereof will be omitted. In addition, since the coating layer is formed on the surface 4a of the heat generating plate 4 by the coating treatment, the drawing is omitted since it is a known coating layer.

On the other hand, the surface treatment process and the surface coating process described in another embodiment according to the present invention is the same as in the first embodiment, so a detailed description thereof will be omitted, and on the surface (4a) of the extruded heat generating plate (4) The drawing of the coating layer to be coated is also omitted in some cases.

Accordingly, the extruded heat generating plate 4 manufactured according to the first embodiment of the present invention has a punch groove 43 formed on an inner surface thereof, and a hair bleeding prevention protrusion 5 formed on a surface 4a corresponding thereto, as shown in FIG. 8. ) Is configured to protrude.

The first embodiment may be preferably implemented in that the thickness of the extruded heat generating plate 4 has a relatively thin thickness.

9 shows a manufacturing process diagram of the second embodiment according to the present invention, Figure 10 shows another manufacturing process diagram.

9 and 10, in the embodiment, the extruded heating plate 4 has a flat surface 4a as shown in (a) of FIG. 9 and the heater mounting groove 41 and the space 42 at the rear part. It is extruded so that it may have.

The extruded heat generating plate 4 allows the surface 10a to be inserted into the seating groove 101 of the base 100 as shown in FIG. The bottom of the seating groove 101 is provided with a protrusion forming groove (102).

Accordingly, the punch seat groove 44 is formed on the inner surface of the extruded heat generating plate 4 by using a cutting tool 111 such as an end mill as shown in FIG. 9B or a drill as shown in FIG. 10A. It is cut to form.

And by inserting the punch 110 through the space portion 42 of the extruded heat generating plate 4 as shown in Fig. 9 (c) or 10 (b) and hit the punch seat groove (44) 44) As the punch groove 43 is formed on the inner surface and the surface 4a of the portion having the protrusion forming groove 102 is deformed to protrude by the punching force of the punch 110, the hair pulling prevention protrusion is formed on the surface 4a. (5) is configured to protrude.

Accordingly, the extruded heat generating plate 5 has a punch seat groove 44 on the inner surface of the extruded heat generating plate 4 corresponding to the hair-tear preventing protrusions 5 as shown in FIGS. 11 and 12 and the punch seat groove 44 The punch groove 43 is provided inwardly.

The second embodiment can be preferably carried out when the thickness of the extruded heat generating plate 4 is provided with a hair-tear preventing protrusions 5 having a relatively thick thickness.

13 and 14 show a manufacturing process diagram and an extruded heat generating plate 4 of the third embodiment of the present invention.

The extrusion heating plate 4 is to be extruded so that the punch seat groove 45 is formed on the inner surface when extruding.

Accordingly, as shown in FIG. 13A, the extruded heat generating plate 4 has a flat surface 4a and a heater mounting groove 41 and a space 42 at its rear end, and has an inner surface of the extruded heat generating plate 4. The punch seat groove 45 having a long shape in the longitudinal direction is inserted into the base 100.

Next, as shown in FIG. 13 (c), the extrusion heating plate 4 is inserted into the base 110 having the seating groove 101 and the protrusion molding groove 102 as shown in FIG. 13 (b). The punch 110 is inserted through the space portion 42 of the heat generating plate 4 to be hit within the punch seat groove 45.

Accordingly, as the punch groove 43 is formed on the inner surface of the punch seat groove portion 45 and the surface 4a of the portion having the protrusion forming groove 102 is deformed to protrude by the punching force of the punch 110, the surface 4a. There is to prevent the hair tearing protrusions (5) formed to protrude.

Therefore, in the third embodiment, as shown in FIG. 14, the inner surface of the extruded heat generating plate 4 corresponding to the anti-hairing protrusion 5 has a punch seat groove 45 and punches into the punch seat groove 45. It is comprised in the state provided with the groove | channel 43.

15 and 16 show a fourth embodiment of the present invention.

Referring to FIG. 15, when hitting both sides of the extruded heat generating plate 4 with the punch 110, as shown in FIG. 16, punch grooves 43 ′ are formed on both sides of the extruded heat generating plate 4, and upper and lower portions thereof. As the opening is deformed, the hair-break preventing protrusion 5.5 'protrudes above the surface 4a.

Therefore, the extruded heating plate 4 has a flat surface 4a as shown in FIG. 16 and has a heater mounting groove 41 and a space 42 at its rear end, and is punched by punch holes 43 'on both sides. The lower edge portion is formed to form a hair peeling prevention protrusion (5, 5 ') is formed.

17 and 18 show the manufacturing process and the extruded heat generating plate 5 of the fifth embodiment according to the present invention.

Referring to (a) of FIG. 17, both sides of the extruded heat generating plate 4 are formed using a cutting tool 111 such as a drill, respectively, to form a pinhole 46 and then FIGS. 17 (b), (c) and As shown in FIG. 18, the press-fit pin 47 having a larger diameter than the pin hole 46 is forcibly inserted into the pin hole 46.

Therefore, when the press-fit pin 47 is forcibly inserted into the pinhole 46, the press-fit pin 47 causes the upper and lower edge portions to be deformed so as to be deformed so that the hair-tear prevention protrusion (5.5 ') above the surface 4a. ) Will protrude.

Therefore, the extruded heat generating plate 4 is inserted into the pinhole 46 formed on both sides by a larger pressing pin 47 having a larger diameter than the upper and lower edges to be deformed to be opened to prevent the hair peeling protrusion (5, 5 ') It is configured to have.

A sixth embodiment according to the present invention is shown in Figs.

This embodiment causes the microprojections 48 to extend in the longitudinal direction at the center of the surface 4a as shown in FIG. 19 when extruding the extruded heat generating plate 4. The fine protrusions 48 are preferably in the form of a triangle.

 Therefore, the extruded heat generating plate 4 has a surface 4a having a flat surface and having a heater mounting groove 41 at its rear end, and having a fine protrusion 48 having a long shape in the longitudinal direction of the extruded heat generating plate 4 on the surface. .

Next, all the middle portions of the remaining fine protrusions 48, which are shown as virtual lines in FIG. 20, except for both ends of the fine protrusions 48, are cut out to be removed.

Therefore, as shown in FIG. 21, the respective hair-break preventing protrusions 5 and 5 ′ protrude from the middle portions of both sides of the surface 4a of the extruded heat generating plate 4.

Figure 22 shows a seventh embodiment according to the present invention.

The embodiment allows the liquid thermosetting material printing layer 49 to be applied to the surface 4a of the extruded heat generating plate 4 as shown in FIG. Since the coating technique (printing technique) of the thermosetting material printing layer 49 is known, a detailed description thereof will be omitted.

For the sake of understanding, the thermosetting material printing layer 49 is such as to apply a liquid droplet to fall on the surface 4a. The thermosetting material printing layer 49 is solidified in a solid solid state when the ceramic is preferred and cured.

Therefore, as shown in FIG. 22B, the coating layer 4b is coated on the entire surface 4a including the thermosetting material printing layer 49.

Therefore, since the thermosetting material printing layer 49 is covered by the coating layer 4b, the thermosetting material printing layer 49 is configured to have a function of preventing hair puffing protrusions 5 and 5 'while being protected from abrasion and not detached.

Figure 23 shows an eighth embodiment according to the present invention.

In this embodiment, as shown in (a) of FIG. 23, a masking tape t is attached to the middle of the surface 4a of the extruded heat generating plate 4, and then a metal corrosion solution is applied to the surface 4a. As shown, only the portion with the masking tape t is not corroded, and only the remaining exposed portion of the surface 4a (virtual line portion) is corroded and removed.

Therefore, the hair peeling prevention protrusions 5 are formed to protrude on the portion to which the masking tape t is adhered, and the masking tape t is detached after the corrosion treatment is completed. And coating layer 4b is to be coated.

A ninth embodiment of the present invention is shown in FIG. The embodiment attaches a masking tape t to the entire surface 4a of the extruded heat generating plate 4 as shown in FIG. 24 (a), in which a hole ta is drilled in the middle of the masking tape t. Let's go.

As shown in FIG. 24B, the ceramic paint is applied to the hole ta of the masking tape t, and the ceramic paint in the hole ta is cured.

Therefore, when the masking tape t is removed from the surface 4a, the ceramic paint is solidified in the portion where the hole ta was formed, thereby forming the hair-break preventing protrusions 5.

And the coating layer 4b is to be coated on the surface 4a as shown in (c) of FIG.

In various embodiments as described above, the hair pulling prevention protrusions 5 and 5 'have a circular shape in plan view and have a height projecting to 0.03-0.5 mm within 1.5 mm in diameter.

In addition, the non-circular hair bumper protrusions 5 and 5 'are all made to have a protruding height of 0.03-0.5 mm, and thus, can be referred to as very small hair bumper protrusions 5 and 5'.

Therefore, the various embodiments of the present invention are configured such that the extruded heat generating plate 4 can be provided with the hair puffing protrusions 5 and 5 'of very small size.

And the present invention has been described as an embodiment of the extruded heat generating plates (4, 4 ') having a flat surface (4a) may be implemented in other cases, the shape of the extruded heat generating plates (4, 4') in some cases. .

That is, the invention can be applied to both the hair iron to be treated by pulling a pair of extruded heat generating plates (4,4 ') to the hair end (h') in the state of pressing the hair (h).

Therefore, although not shown in the drawings, a pair of extruded heating plates are formed in a pair of extruded heating plates, for example, a half moon shape and a corresponding one is formed in a half moon groove shape to face each other. In the case of a hair iron which is pulled to the end of the hair (h ') under pressure, the pair of hair extruders (5, 5') is provided on one of the extruded heat generating plates. It may be implemented.

Therefore, the present invention is not limited to the illustrated embodiments, and various modifications may be made by those skilled in the art to which the present invention pertains. Therefore, it is obvious that the present invention should be widely protected without departing from the scope of the claims. will be.

1: Hinge shaft, 2, 2 ': upper and lower rod, 3: electric heater, 4, 4': extruded heating plate, 5, 5 ': hair pulling prevention protrusion, 41: heater mounting groove, 42: space part, 43,43 ': Punch groove, 44: Punch seat groove, 45: Punch seat groove, 46: Pinhole, 47: Press pin, 48: Fine protrusions, 49: Thermosetting material print layer, h: Hair, s: Hair bridging prevention Spacing, g: hair passage and minimum space, t: masking tape, ta: hole

Claims (14)

delete A hair iron having a pair of extruded heat generating plates provided on the inner surface of the upper and lower rod end portions rotatably coupled to the hinge shaft and having a flat surface, a heater mounting groove portion, and a space portion in an inner surface thereof;
The pair of extruded heat generating plate to have a pair of hair anti-fogging protrusions to have a hair anti-fogging gap on both sides of the longitudinal surface of any one of the extruded heat generating plate, but extrudes a punch groove for protruding the hair anti-fogging protrusions Hair iron for straight perm to prevent hair tear, characterized in that it has an inner surface of the heating plate. [4] The hair iron for preventing straight hairs according to claim 2, wherein the punch seat grooves for protruding the hair bump preventing protrusions are formed on the inner surface, and the punch grooves are located inside the punch seat grooves. The method of claim 2, wherein the length of the punch seat groove in the longitudinal direction on the inner surface for protruding the hair bumping prevention projections, the hair is characterized in that there is a punch groove corresponding to the hair tear prevention projections inside the punch seat grooves. Hair iron for straight perming to prevent tearing. A hair iron having a pair of extruded heat generating plates provided on the inner surface of the upper and lower rod end portions rotatably coupled to the hinge shaft and having a flat surface, a heater mounting groove portion, and a space portion on an inner surface thereof;
The pair of extruded heat generating plate to have a pair of hair anti-fogging protrusions to have a gap between the longitudinal surface of any one of the extruded heat generating plate, but the hair anti-fogging protrusion is punched on both sides of the extruded heat generating plate, respectively Hair irons for straight hair perm, characterized in that the groove is formed by forming a groove so that the upper and lower edge portions are formed to protrude. A hair iron having a pair of extruded heat generating plates provided on the inner surface of the upper and lower rod end portions rotatably coupled to the hinge shaft and having a flat surface, a heater mounting groove portion, and a space portion on an inner surface thereof;
The pair of extruded heat generating plate to have a pair of hair anti-fogging protrusions to have a hair anti-fogging gap on both sides of the longitudinal surface of any one of the extruded heat generating plate, wherein the hair anti-fogging protrusions are formed on both sides of the extruded heat generating plate, respectively Hair irons for straight hair perm, characterized in that the protruding by inserting a larger pressing pin larger in diameter into the pin hole. A hair iron having a pair of extruded heat generating plates provided on the inner surface of the upper and lower rod end portions rotatably coupled to the hinge shaft and having a flat surface, a heater mounting groove portion, and a space portion on an inner surface thereof;
The pair of extruded heat generating plate to have a pair of hair anti-fogging projections to have a gap between the longitudinal surface of any one of the extruded heat generating plate in the longitudinal direction, the hair anti-fogging protrusion is a longitudinal direction during extrusion of the extruded heating plate Hair iron for straight permer to prevent hair tearing, characterized in that the intermediate portion of the micro-projections provided to lead to the end portion provided on both sides of the surface. 8. The hair iron for straight perm according to claim 7, wherein the hair preventing protrusion is triangular in shape. According to any one of claims 2, 6 and 7, wherein the anti-hair bulge protrusions are made to protrude by coating the coating layer thereon after the thermosetting resin printing layer is applied to the surface of the extruded heating plate is cured. Hair iron for straight perm which is characterized by hair loss prevention. 10. The hair iron for straight perm according to claim 9, wherein the thermosetting resin printing layer is ceramic. A hair iron having a pair of extruded heat generating plates provided on the inner surface of the upper and lower rod end portions rotatably coupled to the hinge shaft and having a flat surface, a heater mounting groove portion, and a space portion on an inner surface thereof;
The pair of extruded heat generating plate to have a pair of hair anti-fogging protrusions to have a hair anti-fogging gap on both sides of the longitudinal surface of any one of the extruded heat generating plate, the hair anti-fogging protrusion is a surface with a masking tape Except for the remaining surface is corroded with a metal corrosion solution hair iron for straight perm, characterized in that the portion formed with the masking tape is protruded to be formed. A hair iron having a pair of extruded heat generating plates provided on the inner surface of the upper and lower rod end portions rotatably coupled to the hinge shaft and having a flat surface, a heater mounting groove portion, and a space portion on an inner surface thereof;
The pair of extruded heat generating plate to have a pair of hair anti-fogging protrusions to have a hair anti-fogging gap on both sides of the longitudinal surface of any one of the extruded heat generating plate, wherein the hair anti-fogging protrusions of the masking tape attached to the surface Hair iron for straight perm prevention, characterized in that the coating is made by applying a ceramic paint with a hole to cure. The method of any one of claims 2, 3, 4, 11, and 12, wherein the anti-hair bulging protrusions have a circular shape within 1.5 mm on a plane and a height of 0.03-0.5 mm. Hair iron for straight perm to prevent hair tearing, characterized in that it is made to protrude. According to any one of claims 5, 6 and 7, wherein the hair-break prevention protrusion is formed to protrude in conformity with the side of the extruded heat generating plate, characterized in that made to protrude to a height of 0.03-0.5mm Hair iron for straight perm to prevent hair shedding.

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