JP2000033007A - Rod for perming - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rod for perming which allows the easy winding of the hair to a rod part, prevents the escape of the hair even if winding the hair up to the hair tips, is excellent in applicability, light in weight and highly durable, does not have an intricate structured and is excellent in productivity. SOLUTION: This rod for perming has a cap part 2 which has a rubber stopping part 4 at one end and a rod part 6 having an elastic hollow body 7 which has cap parts 2 at its both ends, has a skin layer 8 on its front surface and consists of low-foamed hollow synthetic rubber, thermoplastic elastomer or soft synthetic resin and a core material 9 which is inserted into the hollow part of this elastic hollow body 7, is fixed in pressurized contact therewith and is formed of a hollow or solid synthetic resin or wood, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a permanent rod, and more particularly to a lightweight rod which is excellent in workability at the time of holding and wrapping of hair and washing with water, and without damaging the hair or scalp of a customer (operated person). The present invention also relates to a permanent rod that is effective in forming a horizontal wave and a vertical wave in a beauty salon or a barber that is safe and does not hurt the operator's hand.

[0002]

2. Description of the Related Art Permanent waves such as a horizontal wave and a vertical wave are conventionally performed in a beauty salon or a barber shop.
Various permanent rods have been used in forming permanent waves. For example: a. Japanese Patent Laying-Open No. 57-55103 (hereinafter referred to as "A") discloses "a permanent rod having an outer sleeve made of silicone rubber or the like on the surface of a hard tubular material such as polypropylene or nylon". . b. Japanese Patent Application Laid-Open No. 9-28445 (hereinafter referred to as “B”) discloses “a coiled rod for cold permanent formed of a thermoplastic elastomer and having a hollow cylindrical rod”. c. Japanese Utility Model Laid-Open Publication No. 2-4502 (hereinafter referred to as Japanese Patent Publication No. C) discloses "plastic metal wire (such as aluminum).
A hair curler for permanent use, in which the shape-retaining core wire is covered without being exposed by the elastic synthetic resin material having elasticity and has a rod shape, and the core wire and the foam synthetic resin material are formed in close contact with each other. It has been disclosed.

[0003]

However, the above-mentioned conventional permanent rod has the following problems.
In the permanent rod described in Japanese Patent Application Laid-Open Publication No. H07-157, the thickness of the outer sleeve formed of silicon rubber or the like is 0.127 mm to 0.1 mm.
Since it is inserted into the outer periphery of the tubular material with a super thin thickness of 726 mm, a gap is easily formed between the outer sleeve and the tubular material due to deterioration or scratching. As a result, the outer sleeve is twisted or slipped, causing slippage from the tubular object, so that a uniform wave is difficult to be produced, and thus, there is a problem that the operability is lacking. In addition, since the outer sleeve is inserted into the tubular object, it is difficult to press the tube against the tubular object, and since the outer sleeve is thin, it is not possible to return a uniform repulsive force to the wound hair and it is difficult to form a uniform wave. Had.

[0004] The wound rod for cold permanent disclosed in Japanese Patent Application Laid-Open No. H11-27139 is formed of a thermoplastic elastomer into a hollow cylindrical shape, so that a practitioner performs the winding operation by denting the center of the rod during the winding operation. There was a problem of lack of nature. Furthermore, since it is formed only of a thermoplastic elastomer, the surface is slippery and lacks the workability of winding the hair bundle, and in order to solve this drawback, the surface is made plain or a minute hemispherical projection (Japanese Patent No. (3, column 3, lines 14 to 42) must be formed, and these processes must be performed by a processing method such as sand blasting or electric arc processing, which requires a lot of work man-hours and work time, and requires high productivity. In addition, there was a problem that the cost was low due to lack of labor saving. In addition, if the surface is ground and ground, or if minute projections are provided on the surface, the coefficient of static friction of the entire surface is significantly reduced, the surface becomes slippery, and the repulsive force when the hair is wound around is extremely small, The bundle of hair must be thin, and if the length of the hair to be wound is not more than 1.5 times the outer circumference of the rod (more than one and a half rolls), it will come off from the rod part, resulting in poor workability. In addition, there is a problem that short hair is difficult to perform.

[0005] Further, when the surface is processed to form a ground or provided with minute projections, when the hair is softened (swelled) with a perm solution, the roughness of the rod surface, etc., affects the hair tips of the wound hair. However, there is also a problem that the hair tips are rough and tend to be cut even after the treatment. Furthermore, when the hair bundle of hair is to be thinned, a large number of such rods having a small diameter must be wound, so that the operation is complicated, the operation efficiency is low, and a large amount of operation time is spent.
This causes a problem that the user is uncomfortable and wastes time. When a force is applied to the end of the rod, the rod is deformed, and it becomes difficult to wind the hair, thus resulting in a problem that the finish of the permanent wave is poor and the work requires a long time and the workability is poor.

[0006] Since the inside of the rod is formed in a hollow cylindrical shape, the rod is deformed when it is dropped on the floor during work or during transportation, and cannot be reused, resulting in a problem of lack of durability. Was. Since it is formed by injection molding, only a rod of a single length can be obtained for each mold, and there is a problem that versatility is lacking. Since it is formed of a thermoplastic elastomer alone, it has low elasticity, and has a problem that winding work is difficult and lacks workability when the hair bundle to be wound is thick, hard, or short. In the case of a water roll wound without applying a permanent liquid to the hair, the hair does not swell and soften, so it is hard, and hard hair, virgin hair, short hair, etc. will return to the original state from the wound state of the hair, From the wound state, the shape of the hair becomes large and becomes larger than the desired permanent wave, and there is a problem that the finish of the permanent is lacking.

Further, in the hair curler for permanents disclosed in the publication of Japanese Patent Application Publication No. H07-213, when the rod portion is bent, it does not return to its original state, but repeatedly bends and extends, so that the metal wire is broken due to metal fatigue. There was a problem of lack of durability. In addition, since the synthetic resin is simply foamed and does not have rubber elasticity, for example, a foamed synthetic resin such as foamed polyethylene has an extremely weak repulsive force, so that the strength of winding the bundle of hair causes a non-uniform wave. The procedure was difficult and required skill. Furthermore,
The foam cells on the surface of the foamed synthetic resin are deteriorated by the permanent liquid or detergent during work, and the surface becomes uneven, and the hair is caught during the treatment and the workability is significantly impaired, and it is extremely durable because it is deteriorated by ultraviolet rays during drying. There was a problem of lack of nature.

The present invention solves the above-mentioned conventional problems. The rod has an elasticity and a hardness that are optimal for a practitioner to perform a permanent treatment on the rod portion. It can be designed to be short and short, and it can respond to various treatments.It is excellent in versatility, and it is easy to wind the hair around the rod part during the treatment and the hair does not escape even if it is wound up to the tip of the hair, so the workability during the treatment is remarkable An object of the present invention is to provide a permanent rod that is excellent in lightness, has excellent durability, and does not have a complicated structure because it is excellent, and a permanent liquid or a cleaning liquid is not impregnated in the rod portion.

[0009]

According to a first aspect of the present invention, there is provided a permanent rod having a cap having a rubber stopper at one end, and a skin layer on the surface having the cap at both ends. An elastic hollow body made of low-foamed hollow synthetic rubber, thermoplastic elastomer, or soft synthetic resin, and a hollow or solid synthetic resin or wooden material inserted into the hollow portion of the elastic hollow body and pressed and fixed. And a rod portion having a core member formed by the above.

[0010] As a result, since the skin portion is provided on the surface of the rod portion, it is possible to prevent the permanent liquid and the cleaning liquid from entering the inside of the rod. Can be prevented from being damaged. In addition, since the washing water does not penetrate into the rod part, after the treatment is completed, it is possible to wash away the red, dandruff and cleaning liquid simply by washing the permanent rod, and it is easily dried by air drying. And the stock of permanent rods can be reduced accordingly. When the permanent rod is made of an elastic hollow body made of low-foaming soft synthetic resin, synthetic rubber, thermoplastic elastomer, etc. and a hollow core material, it is lightweight, and many permanent rods are placed on the head of the patient. Can prevent the head from becoming heavy. In addition, there is an effect that it is possible to prevent giving a feeling of strangeness such as a feeling of weight even if the hair is wound up to the hair base. Since the rod part is formed of an elastic hollow body, moderate elasticity and a feeling of fit on the surface are obtained, and while exhibiting a moderate anti-slip effect on the fingertip, the permanent rod fits softly naturally with the hair, This has the effect that the hair can be easily wound around the permanent rod. By changing the length and shape of the rod portion and the core material, or the size of the diameter, permanent rods having various sizes and shapes can be appropriately obtained,
It is not uniform and has the effect of being excellent in versatility. Further, even if the permanent rod comes into contact with the hair, the permanent hair does not break or lose hair, and has an effect of preventing damage to the hair. Since the rod portion is formed of an elastic hollow body, it has an effect of being hardly damaged even when dropped, and having excellent durability. Furthermore, since the structure is simple, the manufacturing cost can be reduced and the economy is excellent.

Since the rod portion is a low-foam elastic hollow body and has a thickness, the hair bundle can be captured at the same time as the hair starts to be wound, and the hair bundle of the wound hair can be captured because of the thickness and softness. On the other hand, even with a permanent rod having a large repulsion force and a large diameter, a firm wave (curl) can be formed from the tip of the hair, which has the effect of significantly improving the operability. Since the rod part is a low-foam elastic hollow body, the force pulling the hair is absorbed by the rod part, preventing the burden on the hair roots and the skin of the customer, and causing the skin irritating by not giving the load No, it has the effect of increasing safety. Even when the hair bundle is thickened, the hair bundle starts to wind and at the same time, a large static friction resistance is obtained, and a strong repulsive force is obtained by the compression force of the inner core material. This has the effect of making it very easy to wind and reducing the number of curler rods to be wound around the head. Since the core material is inserted into the rod part, the permanent rod has uniform elasticity and hardness without bending or denting in the center part,
The practitioner has the effect that the hair can be wound around safely. In addition, since the permanent rod has elasticity, even if the rod is wrapped around the hair and fixed to the rod with a rubber band, it does not hurt the scalp, and further has the effect of preventing the subject from feeling painful. Have.

The cap portion has a rubber stopper formed in a cylindrical shape and having one end processed into an uneven shape, a lid portion in close contact with an end portion of the rod portion, and a rod portion at the other end. And an outer fitting portion for tightly fitting the end of the portion. Thereby, it is possible to prevent the permanent liquid and the cleaning liquid from entering the rod from the end of the rod. In addition, when the outer fitting portion is formed in a tapered shape expanded outward, and the lid, the inner wall of the outer fitting portion, the end of the rod portion, the protrusion of the cap portion, and the core material are further fixed with an adhesive. Since the inside of the rod portion and its both ends are hardened, twisting of the surface layer portion at both ends of the rod portion when the hair is wound around the rod portion can be prevented, and it is possible to more easily wind the hair bundle of hair. Have. Furthermore, when wrapping the hair bundle around the rod part, pull the hair bundle by pulling the hair bundle with a screwdriver with a screwdriver. Since the force of the fingertip acts on the main body, it is possible to prevent both ends of the main body from being crushed and the surface layer from being twisted.

In the above-mentioned conventional rod for permanent use, if the surface layers at both ends of the rod part are twisted, the force of the fingertip is not applied, so that it is very difficult to wind the hair. However, this problem can be solved by this configuration. No roughening on the surface of the rod part so there is no roughness, no roughness on the hair tip after the treatment,
It has the effect that a perm with a supple gloss can be obtained without damaging the cuticle. Since the rod portion, cap portion, and core material are separately manufactured and assembled, permanent rods having various lengths can be obtained, which has an effect of being not uniform and having excellent versatility.
Here, as the soft synthetic resin of the elastic hollow body, linear low density polyethylene (L-LDPE), polyurethane, silicone resin, vinylidene chloride resin and the like are used. The use of linear low-density polyethylene is preferable because a lightweight permanent rod having excellent mechanical strength can be obtained. As the cap part,
Polyethylene, polypropylene, linear low density polyethylene, vinyl chloride resin, vinylidene chloride resin,
Injection molding of a synthetic resin such as polyamide or polyester or a resin composition comprising these and another synthetic resin or filler is used. The shape of the core material may be formed in a polygonal shape such as a circle, a triangle or a square. A circular shape has excellent compression resistance, and a polygonal shape has a small contact area with the inner wall of the hollow part when inserted into the hollow part of the elastic hollow body. Can be improved.

According to a second aspect of the present invention, there is provided the permanent rod according to the first aspect, wherein the synthetic rubber is a butadiene rubber (BR) or a styrene-butadiene rubber (SB).
R), isoprene rubber (IR), ethylene-propylene rubber (EPM), butyl rubber (IIR), chloroprene rubber (CR), nitrile rubber (NBR), acrylic rubber (ACM, ANM), urethane rubber (U), silicone rubber (Q), fluorine rubber (FPM), vulcanized rubber, polyether rubber (POR, CHR, CHC), chlorosulfonated polyethylene (CSM), polyepichlorohydrin, or a mixture thereof with a filler Has a configuration that is a composite of

Thus, in addition to the effect obtained in claim 1, thick hair bundles, short hair, and hard hair are formed by the elasticity of the synthetic rubber of the rod portion and the compressive force of the repulsive force pressing the synthetic rubber from the inside by the core material. This also has the effect that the central portion of the rod can be wound uniformly without sagging. Since the core material and the foam cells at the central portion have appropriate rigidity, the hair has an effect that the hair is adapted to the rod portion and can be finished into a desired permanent wave. Here, as the filler, organic fibers such as wood powder and rayon, mica, silica, calcium carbonate, clay, graphite, carbon black, and resin fine powder such as polystyrene and polymethyl methacrylate can be used. By adding these, it is possible to improve the mechanical strength, increase the amount, and reduce the molding shrinkage.

According to a third aspect of the present invention, there is provided the permanent rod according to the first or second aspect, wherein the thermoplastic elastomer is stereoblock polypropylene, 1,2,
-Ionomers such as polybutadiene, polyolefin having an ion cluster, polystyrene, polyurethane, olefin (TPO), polyester,
Block copolymers having rigid chain thermoplasticity such as polyamides, graft polymers such as polyethylenes and fluororesins, nitrile rubber-polyvinyl chloride copolymers, and dynamically vulcanized thermoplastic elastomers (TPV) It has a structure formed of a composite of at least one or more of these and the filler.

Thus, in addition to the effects obtained in claim 1 or 2, the thermoplastic elastomer has excellent mechanical strength and chemical resistance, and thus has an effect of being excellent in durability. Since the rod part is a low foaming thermoplastic elastomer,
At the time of treatment, the force pulling the hair is absorbed by the rod part, preventing the burden on the hair roots and scalp of the customer, and increasing the safety without causing irritations to the scalp by not applying the burden It has the action of: When the permanent rod is made of a low-foaming thermoplastic elastomer and a hollow core material, the rod is lightweight, and the head can be prevented from becoming heavy even if many permanent rods are applied to the head of the subject. In addition, there is an effect that it is possible to prevent giving a feeling of strangeness such as a feeling of weight even if the hair is wound up to the hair base.

According to a fourth aspect of the present invention, there is provided a rod for permanent use according to any one of the first to third aspects.
The cap portion has a cylindrical portion, a rubber stopper formed by cutting one end of the cylindrical portion into an uneven shape, and an external fitting portion for externally fitting the end of the rod portion to the other end of the cylindrical portion. A lid formed in the shape of a wall between the rubber stopper and the outer fitting portion and in close contact with the end of the rod portion; and a fingertip comprising an uneven portion or a small hole formed on the surface of the cylindrical portion. It has a configuration provided with a non-slip portion and / or one or more fin portions which are provided upright on the inner wall of the outer fitting portion and cut and fixed in the elastic hollow body of the rod portion.

Thus, since the caps are provided at both ends of the rod, both ends of the rod are prevented from being crushed or twisted, so that there is an effect that the workability of the operation is improved. The lid of the cap seals the end of the low-foamed elastic hollow body and the core material, especially the hollow core material of the rod part, so that the permanent liquid and the cleaning liquid enter the rod part and prevent the rod part from being hydrated. Therefore, the weight reduction can be maintained, and the cleaning liquid containing dandruff and the like does not enter the rod portion, so that the hygiene and safety can be improved. In addition, since the fin portion is provided inside the outer fitting portion of the cap portion, the cap portion and the rod portion are firmly connected to each other and integrated, so that slipping between the rod portion and the cap portion can be prevented. Here, a core member formed to have a length of 立 may be provided upright at the center of the lid portion side of the cap portion on the rod portion side. This is because the insertion of the core material can be completed only by fitting the cap portion to the rod portion, and the productivity can be improved.

According to a fifth aspect of the present invention, there is provided the permanent rod according to any one of the first to fourth aspects.
The skin layer of the elastic hollow body has a thickness of 2 μm to 1000 μm, preferably 20 μm to 800 μm, and more preferably 50 μm.
It has a configuration having a thickness of m to 500 μm.

[0021] As a result, the surface of the rod portion is smooth because of having the skin layer of a predetermined thickness, so that when the permanent rod is rewound from the hair, the hair can be smoothly rewound without being caught or cut. It can be performed, and has the effect of preventing the subject (customer) from suffering from hair cutting or hair loss during the operation. In addition, since fine vertical wrinkles are formed on the surface of the skin layer due to shrinkage during molding, cuticles of the hair are caught by the vertical wrinkles, so that it has an effect of improving the ease of winding the hair and improving workability. Here, depending on the type of the elastic hollow body, as the thickness of the skin layer becomes smaller than 50 μm, when the skin layer is damaged, the cleaning liquid containing a permanent solution or filth such as dandruff impregnates and remains in the foam layer. Any of these is not preferred, since the tendency to lack hygiene and durability is likely to appear, and as the thickness exceeds 500 μm, the hardness tends to become too strong and the workability tends to be lacking. In particular, when the thickness of the skin layer is less than 2 μm or more than 1000 μm, this tendency is remarkable, which is not preferable. The skin layer is 2
It may be formed by layer extrusion. By performing two-layer extrusion molding, the thickness of the skin layer and the expansion ratio can be adjusted to predetermined values.

According to a sixth aspect of the present invention, there is provided a rod for permanent use according to any one of the first to fifth aspects.
The elastic hollow body is foamed at a foaming ratio of 1.5 to 5 times, preferably 1.8 to 3.5 times, and is formed of closed cells, and has a Shore hardness of 20 ° to 80 °, preferably 20 °. ~
It has a configuration of 55 °.

Thus, the rod portion can be provided with optimal elasticity during the operation, and the workability of winding the hair during the operation can be improved. Further, since the foam cells are closed cells, even if the skin layer is cut by the hair and damaged, the permanent liquid or the contaminated cleaning liquid is prevented from penetrating into the rod portion, and the durability can be improved. Since the Shore hardness is 20 ° to 80 °, preferably 20 ° to 55 °, a moderate repulsion is given to the wound hair, and the hair is easily wound around the rod portion and fixed, and as a result, it is easy to obtain a desired curl or hair wave. It has the effect that it can be finished. Here, as the foaming ratio becomes smaller than 1.8 times, the Shore hardness tends to increase too much. When the inner diameter of the hollow portion of the elastic hollow body is smaller than the outer diameter of the core material, the core material becomes the hollow portion. It is not preferable because it is difficult to insert and lowers productivity, and the weight of the rod part tends to be heavy. Also, as the rod part becomes larger than 3.5 times, the Shore hardness decreases and the rod part becomes too soft and the hair is wound. In this case, the rod portion is easily deformed due to being crushed or twisted, which reduces the workability of the winding operation and tends to impair the finish of the permanent wave. In particular,
If the ratio is less than 1.5 times or more than 5 times, this tendency is remarkable, which is not preferable.

According to a seventh aspect of the present invention, there is provided the permanent rod according to any one of the first to sixth aspects.
The core material is a polyethylene or polypropylene, a polyolefin-based tubular or rod-like body such as polystyrene,
The outer diameter is 5/7 to 1/5 of the cross-sectional diameter of the rod portion,
Preferably, it is formed in 2/3 to 1/4, and the outer diameter of the core is 1.5 times smaller than the inner diameter of the hollow part of the elastic hollow body.
構成 25%, preferably 2-20%.

Thus, since the core material is inserted into the hollow portion, the core material is excellent in shearing stress and has an effect of preventing the rod portion from being twisted or dented at the center during the treatment. Further, since the cross-sectional diameter of the core tubular body is formed to be 5/7 to 1/5, preferably 2/3 to 1/4 of the cross-sectional diameter of the rod, the core material is inserted into the elastic hollow body of the rod portion. From the skin layer, and in combination with the skin layer, has the effect of obtaining optimal hardness and static friction resistance during treatment. Since the outer diameter of the core is formed to be 1.5 to 25%, preferably 2 to 20% larger than the diameter of the hollow portion of the elastic hollow body of the rod portion, it is only necessary to insert the core material into the elastic hollow body. In addition, since the core material can be fixed to the elastic hollow body, and the number of steps is small and no adhesive is required, the production can be performed at low cost.
By making the size larger by 2 to 20%, appropriate elasticity, resilience and productivity can be enhanced. In particular, when a hollow tubular material such as polyethylene or polypropylene is used as the core material, the core material has a specific gravity of 1 or less, and is light. ) Has the effect of preventing the burden on the scalp.

Here, as the outer diameter of the hollow tubular body of the core material becomes larger than 2/3 of the cross-sectional diameter of the rod portion, the rod portion becomes harder and the thickness of the elastic hollow body becomes thinner to reduce the repulsive force. It is not preferable because it is weakened, and the elasticity of the rod portion tends to become too strong as the diameter becomes smaller than 1/4, and the cross-sectional diameter of the tubular body is 5/7 to 1/1 of the cross-sectional diameter of the rod.
If it exceeds 5, these tendencies are remarkable, which is not preferable.
Further, the core material may be divided into two equal parts, and each may be inserted from both ends of the rod part. This is to increase productivity. Incidentally, the thickness of the elastic hollow body such as a thermoplastic elastomer after the core material is inserted is 2 to
5 mm, preferably 2 to 3.5 mm. Thereby, when the elastic hollow body is compressed from the inside and a hair bundle of hair is wound around the rod portion, an appropriate repulsive force can be obtained, and the hair can be easily wound.

[0027] The permanent rod according to claim 8 of the present invention is characterized in that in any one of claims 1 to 6,
The lid has a projection formed at the center of the outer fitting portion on the outer fitting portion side and having a protrusion fitted by fitting or fitting the end of the core material inside or outside, wherein the core material is made of polyethylene, polypropylene, polystyrene, or the like. And a tubular or rod-shaped body formed of polyolefin or a polyolefin-based copolymer, the outer diameter of which is 5/7 to 1/5, preferably 2/3, of the cross-sectional diameter of the rod portion.
.About.1 / 4, and 0.5 times to 1.1 times, preferably 0.8 times to 1.times. The inner diameter of the hollow portion of the elastic hollow body.
It has a configuration that is formed 05 times.

[0028] With this configuration, since the cap has a projection for fitting the core material to the lid, the integration of the chap and the rod is firmly connected to prevent the rod and the cap from slipping. It has the effect of being able to. Therefore, it is possible to prevent the permanent liquid and the cleaning liquid from entering the rod portion from the end portion of the rod portion, and to prevent the rod portion from being hydrated,
It has the effect of being able to maintain weight reduction and to improve hygiene and safety. Further, even if a large force is applied to the rod portion during the winding operation, the cap portion and the rod portion do not rotate or the cap portion does not come off from the rod portion, and the strength is extremely high. By fitting the core material to the projection inside the cap portion by external fitting or internal fitting, the integration of the cap portion and the core material is strengthened, and the effect of improving the durability is obtained. Here, the protrusion is formed in a hollow shape or a solid shape in which the fitting portion side is opened. Also, the top of the projection is preferably formed to be shorter by 2 to 3 mm than the end of the cap on the fitting side to the rod. Since the core material is formed larger than the inner diameter of the elastic hollow body,
By making the top of the projection shorter by 2 to 3 mm, the fitting of the cap to the rod can be improved. When the fitting side of the rod part of the cap part is formed on the inclined wall so that the wall thickness increases toward the inside from the opening end part, this makes the fitting operation of the cap part and the rod part easier and increases productivity. Can be. When the outer diameter of the core material is smaller than 0.8 times the inner diameter of the hollow portion of the elastic hollow body, the elastic hollow body tends to be easily deformed during the treatment, and a tendency appears.
If it is larger than 5 times, the outer diameter of the elastic hollow body becomes large and the curl or wave forming force tends to be easily reduced.

[0029] The permanent rod according to the ninth aspect of the present invention is characterized in that, in any one of the first to eighth aspects,
The cap part is formed by piercing the outer peripheral wall of the lid part with an anti-slip part formed by knurling or an uneven part and / or at a symmetrical position of the cap part wall between the rubber stopper part and the lid part. It has a configuration provided with an insertion hole for a pin such as a single pin or an American pin provided.

Thus, since the cap portion has a slip preventing portion such as a knurl cut and a concave portion in the external fitting portion, it is possible to prevent the finger from slipping during the treatment and to significantly improve the workability during the treatment. It has the action of: Since a pin insertion hole such as a single pin is provided between the cap lid portion of the cap portion and the rubber stopper portion, a single pin is inserted between the insertion holes of the permanent rod wound with a bristle bundle so that the permanent rod can be inserted. The permanent rod can be set up at right angles to the skin of the head. As a result, the conventional permanent rod cannot perform the spiral curl, but has the effect that the spiral curl can be performed only by inserting a single pin into the insertion hole with one permanent rod. Here, two to eight pin insertion holes are formed at symmetric positions. Further, an uneven or concave anti-slip portion may be formed on the outer surface of the outer fitting portion. Thereby, it is possible to prevent the finger from slipping during the treatment, and to have an effect that the workability during the treatment can be significantly improved.

According to a tenth aspect of the present invention, there is provided the permanent rod according to any one of the first to ninth aspects, wherein the rod is cut into the outer surface of the elastic hollow body in parallel in a length direction. And a recessed portion.

Accordingly, the concave portion on the outer surface of the elastic hollow body exerts an anti-slip effect, and has an effect of improving the workability of winding the hair. The permanent liquid stays in the concave portions, so that the penetration and fixation of the permanent liquid to the hair can be enhanced, and it has an effect that a uniform permanent wave can be formed. Here, there are two to eighteen concave portions,
Preferably, four to twelve are formed. If the number is less than 4, the effect of the fixing property due to the concave portion tends to be small, and the effect of the skin layer tends to be diminished as the number of the holes increases, depending on the material of the elastic hollow body. If the number is less than 18 or more than 18, this tendency is remarkable, which is not preferable. The depth of the concave portion is 30 μm to 1000 μm.
m, preferably 80 μm to 800 μm. 80
The anti-slip effect tends to decrease as the depth becomes smaller than μm, and the strength of the skin layer decreases as the depth becomes more than 800 μm, which is not preferable.

[0033]

(Embodiment 1) FIG. 1 is a perspective view of a permanent rod according to Embodiment 1 of the present invention, and FIG. 2 (a) is a cross-sectional view taken along line AA of FIG. FIG. 2B is a sectional view taken along line BB of FIG. In FIG. 1, reference numeral 1 denotes a permanent rod according to the first embodiment of the present invention, 2 denotes a cap fixed to both ends of the permanent rod 1 with an adhesive or the like, and 3 denotes an intermediate portion of a cylindrical portion of the cap 2. The lid portion of the formed cap portion, 4 is the cap portion 2
A rubber stopper portion for stopping a rubber band or the like formed at one end of the rod portion, an outer fitting portion for forming an inclined wall whose inner wall is expanded on the opening side, and an outer fitting portion for tightly fitting the end of the rod portion to the outside; This is a rod portion of the permanent rod 1.

In FIGS. 2 (a) and 2 (b), reference numeral 7 denotes a polyolefin-based thermoplastic elastomer (TPO) or a polypropylene-EPDM-based dynamic additive formed in a substantially hollow cylindrical or hexagonal or octagonal cylindrical shape. Vulcanized thermoplastic elastomer (TP
V), an elastic hollow body of the rod portion 6 extruded with synthetic rubber at an expansion ratio of 1.8 to 3.5 times, and 8 is a skin formed on the surface of the elastic hollow body 7 and having a thickness of 50 µm to 500 µm. Layer 9 is a polyolefin such as polyethylene, polypropylene, or polystyrene, or a polyester such as PET, which is inserted and fixed in a hollow portion formed in the center of the cross section of the elastic hollow body 7.
It is a core material formed of a tubular body having a circular cross section formed of a thermoplastic synthetic resin such as polyamide. Here, the core material 9 is 1.5 to 2 times larger than the diameter of the hollow portion of the elastic hollow body 7 of the rod portion 6.
It is formed to be 5% larger and ２ to ４ of the cross-sectional diameter of the rod portion 6. The elastic hollow body may be another synthetic rubber or a soft synthetic resin. Also, the expansion ratio is 1.5 to
Five times, the thickness of the skin layer may be formed to 50 to 500 μm.

Using the permanent rod according to the first embodiment of the present invention configured as described above, a method for treating the permanent will be described below with reference to the drawings. FIG.
FIG. 4 is a state diagram showing a use state of the permanent rod, and FIG. 4 is a state diagram at the time of winding the permanent rod. In the figure, 10 is a permanent paper made of Japanese paper or the like, 11 is a hair bundle, 11a is a hair base, and 12 is a rubber band wound around the rubber stopper 4 of the cap 2 at both ends.

Next, the treatment method will be described. (1) The hair is divided into necessary sizes so that the hair can be easily treated. (2) Apply a first permanent liquid (an alkaline agent such as ammonium thioglycolate) to a necessary part of the hair for each classification. (3) Next, an appropriate amount of the hair bundle 11 is separated, and the separated hair bundle 11 is used for permanent using a thin permanent paper 10 in order to prevent disturbance of the hair and improve work efficiency. After wrapping around rod 1, rubber band 1
2 is fixed to rubber stoppers 4 at both ends to prevent loosening. (4) When the permanent rod 1 is wound around the entire head, the first permanent liquid is applied once more. (5) A cap is placed on the head of the subject, and the time for the medicinal solution to sufficiently act on the hair is determined and set. (6) Check the state of the medicinal solution acting on the hair over time. (7) The first permanent liquid adhering to the hair is poured with warm water. (Intermediate rinsing) (8) As a result of the test curl, if the action of the chemical solution is insufficient, cover it again and set the time. When the action of the chemical solution is sufficient, a second permanent solution (oxidizing agent: a neutralizing solution such as potassium bromate, sodium bromate, or hydrogen peroxide) is sufficiently applied on the permanent rod 1 for 5 to 10 minutes. After leaving, apply again and leave as it is for about 5 minutes. (9) After the time has elapsed after the application of the second permanent liquid and the oxidizing action has been completed, the permanent rod 1 is removed, the hair is sufficiently rinsed with slightly warm water, rinsed, and set.

As described above, the permanent rod according to the present embodiment has the following functions. 1) Since the rod part is formed of an elastic hollow body made of a synthetic rubber such as a thermoplastic elastomer or a vulcanized rubber, or a low-foamed soft synthetic resin, the coefficient of friction is large and the hair is firmly caught and wound around the rod part. be able to. 2) The conventional permanent rod returns due to the restoring force of the hair, and the curl is easily broken. However, since the elastic hollow body is a low-foamed material, the restoring force of the hair is absorbed by the elastic force and the curl can be prevented from being broken. 3) Since the rod portion is formed of a low-foamed material, even if the hair is wound, it can be well curled only by being appropriately distorted. In addition, the elasticity of the thermoplastic elastomer and the elasticity due to low foaming make it resilient, and prevent the permanent rod from collapsing to enhance its durability. 4) Since the rod part has a skin layer on the surface and the foam is closed cells, the permanent liquid does not enter the rod part during use, so that the permanent rod does not become heavy, and the oxidizing agent in the permanent liquid is used. This prevents the cells of the foam from being oxidized and becoming brittle, thereby increasing the durability. 5) Since the skin layer has a large coefficient of friction and has fine vertical wrinkles on the surface of the skin layer that can be confirmed with a microscope, the hair can be easily caught at the time of winding and the workability of the winding operation is improved. 6) In addition, since the permanent rod floats on the washing water due to the closed cells of the rod portion even during washing with water, the permanent rod and the permanent paper can be easily separated, and the hair can be easily washed. 7) Since the diameter of the core material inserted into the hollow portion of the rod portion is about 2 to 20% larger than the diameter of the hollow portion, the EPDM of the rod portion is compressed and hardened by the skin layer and the core material. Therefore, it is possible to prevent the hair from sinking into the wall of the rod. 8) Since the rod portion is made of a low-foam material and has a hollow core material inserted therein, it is lightweight and floats in the washing water at the time of washing, so that the permanent rod and the permanent paper can be easily separated. 9) Since the rod fitting portion side of the cap portion is formed by an inclined wall whose thickness is increased from the opening end toward the lid portion, the rod portion can be easily fitted into the cylindrical portion of the cap portion, and productivity can be improved. Enhance.

(Embodiment 2) FIG. 5 is a cross-sectional view of a permanent rod according to Embodiment 2 of the present invention.
FIG. 6 is a sectional view of a main part of a cap portion of a permanent rod according to the second embodiment. 5 and 6, 2
a is a cap portion having an inclination angle α of 2 to 3 ° on the rubber stopper portion 4a side and 7 ° ± 1 ° of an inclination angle β of the rod portion side, and 4a is formed by rounding each end of the uneven portion. Rubber stopper, 20a is the cap part of the second embodiment, 21 is one or more fins protruding between the inside of the outer fitting part 5 and the lid part 3, and 22 is the rod part fitting side of the lid part 3. Is a protrusion formed in a tubular shape at the central portion of the. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. 7a is a polyolefin-based thermoplastic elastomer (TPO) or polypropylene-EP formed in a substantially hollow cylindrical shape, hexagonal shape, octagonal shape, or other cylindrical shape.
The elastic hollow body of the rod portion 6 extruded from a DM-based dynamic vulcanized thermoplastic elastomer (TPV), synthetic rubber to a foaming ratio of 1.45 times, and 8a was formed on the surface of the elastic hollow body 7a. A skin layer having a thickness of 20 μm to 40 μm, 9 a is a thermoplastic resin such as a polyolefin such as polyethylene, polypropylene, or polystyrene, a polyester such as PET, or a polyamide which is inserted and fixed in a hollow portion formed in the center of the cross section of the elastic hollow body 7. It is a core made of a tubular body formed of a synthetic resin. Here, the core material 9a is the elastic hollow body 7 of the rod portion 6.
a is 1.5 to 20% larger than the diameter of the hollow part and is formed to be 2/3 to 1/4 of the cross-sectional diameter of the rod part 6, but the outer diameter of the core material 9a and the inner diameter of the elastic hollow body 7a May be equal. In this case, it is desirable that the elastic hollow body 7a is hard and has high elasticity.

The core 9a is provided in the hollow portion of the elastic hollow body 7a.
The method for inserting and fixing may be any of full-surface pressure bonding, partial pressure bonding, and point pressure bonding. As the adhesive, an ethylene-vinyl acetate copolymer or a vinyl chloride-vinyl acetate copolymer, an epoxy resin, a polyurethane, a polypropylene, a nitrile rubber, a cyanoacrylate, or the like is suitably used. The shape of the core material 9a is not particularly limited, such as a tubular body, a rod-shaped body, and a flat plate. The cross-sectional shape of the core material 9a is not particularly limited, such as a polygon such as a circle, an ellipse, a triangle, a square, a hexagon, and an octagon, a spiral, a star, and a screw. When a core material 9a having a cross section different from that of the hollow portion of the elastic hollow body 7a is used, the core material 9a and the elastic hollow body 7a are used.
A repulsive force acts on the contact surface of the rod, and the repulsive force makes it possible to easily catch the bristle bundle on the rod portion 6, and also reduces the pressure-bonded area between the elastic hollow body 7a and the core material 9a. Easy to insert. Further, the skin layer 8a is formed of one or two layers. When formed in two layers, the strength is increased, and it is possible to prevent the permeation of the permanent liquid into the inside.

As described above, since the permanent rod according to the present embodiment is configured, it has the following operation in addition to the operation according to the first embodiment. 1) Since the cap has a projection for fitting the core material to the lid, the cap and the rod can be firmly connected to each other and integrated, and slippage between the rod and the cap can be prevented. 2) It is possible to prevent a permanent liquid or a cleaning liquid from penetrating into the rod portion from the end portion of the rod portion and to prevent the rod portion from being hydrated, to maintain a light weight and to improve hygiene and safety. . 3) Just by fitting the cap portion to the rod portion, the insertion of the core material can be completed, and the productivity can be improved. 4) By changing the cross-sectional diameter and cross-sectional shape of the core material, permanent rods having different sizes can be appropriately manufactured, and desired curls and hair waves can be formed. 5) In addition to the operation according to the first embodiment, the cap portion 20a
Since the fin 21 is cut into the elastic hollow body of the rod portion at the same time as the outer portion is fitted to the rod portion, the integration of the rod portion and the cap portion is promoted, and the cap portion or the rod portion rotates during the operation. Can be prevented. Also, the protrusion 22
Is fitted to the core member 22, so that the joining between the cap portion 20a and the rod portion 6 can be more firmly integrated. Further, since the end of the concave and convex portion of the rubber stopper 4a is rounded, the desorption of rubber and the rubber are fixed to the end of the concave portion, so that workability can be improved. 6) Since the vicinity of the center portion of the cap portion is formed larger than the rod portion, and the rubber stopper portion side and the rod portion fitting side are inclined, the cap portion can be easily held and a rubber band can be easily applied. Since the central portion of the cap portion is larger than the diameter of the rod portion, the contact resistance with the hair bundle can be reduced, and the rod can be easily rotated by the cap portion.

(Embodiment 3) FIG. 7 is a sectional view of a main part of a rod part of a permanent rod according to Embodiment 3 of the present invention. The cap part 20b of the third embodiment is different from the cap part of the second embodiment in that a core material 23 having a length of about に is provided upright at the center of the lid part 3 on the rod part side. It is a point. The core material 23 is formed of a hollow core material 23a and a solid core material 23b, and a convex portion of the core material 23a of the core material 23a is fitted to a hollow portion of the core material 23a at a central portion. Thus, in addition to the operation of the first embodiment, the core material can be simultaneously inserted only by externally fitting the cap portions 20b to both ends of the rod portion, and the process of inserting the core material can be omitted, thereby significantly improving productivity. .

(Embodiment 4) FIG. 8 is a perspective view of a permanent rod according to Embodiment 4 of the present invention, and FIG. 9 is a side view of a main part of a cap portion of the permanent rod according to Embodiment 4 of the present invention. FIG. Reference numeral 3 denotes a cap lid, 4 denotes a rubber stopper, 6 denotes a rod, and 8 denotes a skin layer. These are the same as in the first embodiment, and are denoted by the same reference numerals and description thereof is omitted. Reference numeral 31 denotes a permanent rod according to the fourth embodiment, 32 denotes a cap portion of the permanent rod 31 according to the fourth embodiment in which the diameter at the rubber stopper 4 side is large and the diameter at the rod portion 6 side is small, and 33 denotes a cap portion. 3
The anti-slipping portion 34 formed on the peripheral wall of the cap lid portion 3 and formed of knurling and irregularities for preventing a finger from slipping during winding, so that the outer peripheral wall becomes smaller toward the rod portion 6 side. The outer fitting portion 35 is formed so as to be inclined to the outer fitting portion 3.
4, a concave portion for preventing finger slippage formed in parallel with the length direction of the outer fitting portion 34 on the outer periphery of the outer fitting portion 4, two or more of which are provided at equal intervals between the cap lid portion 3 of the cap portion 32 and the rubber stopper portion 4 The formed insertion hole 36a for inserting a pin such as a single pin or a U.S. pin is a single pin guide formed in a convex shape at the center of the insertion hole 36 on the rubber stopper 4 side.

Since the permanent rod according to the fourth embodiment is configured as described above, the following effects are obtained in addition to the effects obtained in the first embodiment. Since the cap portion has a slip preventing portion such as knurling and a concave portion in the outer fitting portion, it is possible to prevent the finger from slipping during the treatment and to significantly improve the workability during the treatment. Since a single pin insertion hole is provided between the cap lid of the cap and the rubber stopper, a single pin is inserted between the insertion holes of the permanent rod with hair bundles wound, so that the permanent rod head Permanent rods can be erected at right angles to the ground. As a result, although the conventional permanent rod cannot perform spiral curl, spiral curl can be performed only by inserting a single pin or the like into the insertion hole with one permanent rod. Since the pin guide portion is provided, the pin can be easily inserted even if the insertion hole is hidden by the hair bundle.

(Embodiment 5) FIG. 10 is a longitudinal sectional view of a permanent rod according to Embodiment 5 of the present invention. In the drawing, reference numeral 37 denotes a V-shaped recess formed by cutting the outer surface of the elastic hollow body 7 in parallel to the length direction to a depth of 100 μm ± 10 μm. The permanent rod of the fifth embodiment differs from that of the first embodiment in that a concave portion is formed on the outer surface of the elastic hollow body 7. Thereby, in addition to the effect of the first embodiment, the permanent liquid can be retained on the surface of the permanent rod, and the penetration and fixation to the hair can be promoted, so that a uniform curl and a hair wave can be formed. . In addition, during the winding operation, the effect of preventing slippage of the hands is exhibited, and the winding workability can be improved.

[0045]

As described above, according to the present invention, the following excellent effects can be obtained. According to the first aspect of the present invention, a. Since there is a skin layer on the surface of the rod part, it is possible to prevent the permanent liquid and cleaning liquid from entering the rod,
The permanent solution prevents the permanent rod from becoming heavy during treatment and damaging the hair of the subject, and is excellent in safety. b. Since washing water does not penetrate into the interior of the rod part, after treatment is completed, only the rod for permanent use can be washed away, so that the red and washing liquid can be washed off, so that the hygiene is excellent. In addition, since it is easily dried by air drying, the rotation rate of the permanent rod can be increased, and the stock of the permanent rod can be reduced by that much, which is economical. c. Since the permanent rod is formed of a low-foam elastic hollow body and a hollow core material, it is lightweight, and can prevent the head from becoming heavy even when a large number of permanent rods are applied to the head of the subject. d. Even if the hair is wound around the hair base, it is possible to prevent a feeling of discomfort such as a feeling of weight and the like, and it is possible to provide a comfortable feeling to the subject and prevent pain. e. Since the hollow core material is inserted into the rod part, the permanent rod has uniform elasticity and hardness without bending or denting in the center part, so the practitioner can wrap the hair with confidence Therefore, the workability of the operation can be improved. f. Since the rod part is a low-foam elastic hollow body and has a thickness, it is possible to capture the hair bundle at the same time as starting to wind the hair, and because it is thick and soft, it repels the wound hair bundle Even with a permanent rod having a strong force and a large diameter, a firm wave (curl) can be formed from the tip of the hair, and the operability can be significantly improved. g. Since the rod part is a low-foam elastic hollow body, the force pulling the hair is absorbed by the rod part, preventing the burden on the hair roots and the skin of the customer, and causing the skin irritating by not giving the load No, it is excellent in safety. h. Even when the hair bundle is thickened, the hair bundle starts to wind and at the same time, a large static friction resistance is obtained, and a strong repulsive force is obtained by the compression force of the inner core material. The curler rod can be easily wound around the head, and the curler rods to be wound around the head can be used with a small number of rods. i. Since the core material is inserted into the rod part, the permanent rod has uniform elasticity and hardness without bending or denting in the center part, so the practitioner can wrap the hair with confidence The operation can be improved. j. Since the rod for permanent use has elasticity, even if the rod is wound up to the hair base and fixed to the rod with a rubber band, it does not hurt the scalp, and furthermore, it does not give a sensation to the user and prevents safety and operability. Excellent.

According to the invention described in claim 2, according to claim 1
In addition to the effects of the invention described in a. Excellent resilience and resilience can significantly improve the workability of the winding work. b. Due to the elasticity of the synthetic rubber of the rod and the repulsive force of pressing the synthetic rubber from the inside with the core material, the central part of the rod is evenly wrapped around thick, short or hard hair without bending the central part of the rod. Can be performed with excellent operability. c. Since the core material and foam cells at the central portion have an appropriate rigidity, the hair can be adjusted to the rod portion and can be finished into a desired permanent wave, so that the finish can be improved and the operability is excellent.

According to the invention described in claim 3, according to claim 1
Or 2 in addition to the effects of the invention described in 2. Since the thermoplastic elastomer is excellent in mechanical strength and chemical resistance, durability can be improved. b. Since it has excellent chemical resistance, there is no change over time due to the permanent liquid, and the durability can be remarkably improved. c. Since the rod part is a low foaming thermoplastic elastomer,
At the time of treatment, the force pulling the hair is absorbed by the rod part, preventing the burden on the hair roots and scalp of the customer, and increasing the safety without causing irritations to the scalp by not applying the burden be able to. d. When the permanent rod is made of a low-foaming thermoplastic elastomer and a hollow core material, the rod is lightweight, and the head can be prevented from becoming heavy even if many permanent rods are applied to the head of the subject. In addition, it is possible to prevent a feeling of discomfort such as a feeling of weight even when the hair is wound around the hair, and it is possible to improve the operability.

According to the invention described in claim 4, according to claim 1
In addition to the effects of the inventions described in (1) to (3), a. Since the cap portions are provided at both ends of the rod portion, both ends of the rod portion are prevented from being crushed or twisted, so that the workability of the surgical operation can be improved. b. Since the lid of the cap seals the end of the low-foamed elastic hollow body and the core of the rod, the permanent liquid and the cleaning liquid are prevented from entering, and the rod is prevented from being hydrated. And improve hygiene and safety c. Since the fin portion is provided inside the outer fitting portion of the cap portion, the integration of the cap portion and the rod portion can be firmly prevented, and the sliding between the rod portion and the cap portion can be prevented, and the operability can be improved.

According to the invention of claim 5, according to claim 1,
In addition to the effects of the invention described in any one of Items 1 to 4, a. Since the surface of the skin part has a skin layer, the surface of the rod part is smooth, and when rewinding the permanent rod from the hair, the hair can be smoothly rewound without being caught and cut, and the surgical operation can be performed. It prevents patients from suffering pain due to hair cutting or hair loss, and is excellent in operability. b. Since fine vertical wrinkles are formed on the surface of the skin layer due to shrinkage during molding, the vertical wrinkles cause a cuticle of the hair to be caught, so that the hair can be easily wound and workability can be improved.

According to the invention described in claim 6, claim 1 is provided.
In addition to the effects of the inventions described in any one of Items 1 to 5, a. Optimal elasticity can be given to the rod part during the treatment, and the restoring power of the hair can be absorbed, so that even if the thickness of the broken hair bundle becomes thicker, it will not hinder the work of winding the hair and workability As the number of permanent rods to be wound is reduced, the number of permanent man-hours can be greatly reduced, and the workability of winding the hair during the operation can be improved. b. Since the foam cells are closed cells, even if the skin layer is cut by the hair and damaged, the permanent liquid or the cleaning liquid can be prevented from penetrating into the rod portion, and the durability can be improved. c. Shore hardness of 20 ° to 80 °, preferably 20 ° to
Since it is 55 °, a moderate repulsive force is applied to the wound hair, and the hair is easily wound around the rod portion and fixed, and as a result, a desired curl or hair wave can be easily finished, and the finish can be improved.

According to the invention of claim 7, according to claim 1,
In addition to the effects of the inventions described in any one of Items 1 to 6, a. When the core material of the tubular body is inserted, the rod portion is excellent in shearing resistance, and it is possible to prevent the rod portion from being dented at the central portion, thereby improving workability. b. Since the cross-sectional diameter of the core material is formed to be 5/7 to 1/5, preferably 2/3 to 1/4 of the cross-sectional diameter of the rod, the weight of the permanent rod can be reduced and the foam of the rod portion can be reduced. Compressive force is applied from the inside, and in combination with the skin layer, the optimum hardness at the time of treatment can be obtained, and the operability can be improved. c. Since the outer diameter of the core tubular body is formed to be 2 to 20% larger than the diameter of the hollow part of the rod part, the core material can be fixed to the elastic hollow body simply by inserting the core material into the elastic hollow body. It requires less man-hours and does not require an adhesive, so it can be produced at low cost and has excellent productivity. d. When a hollow tubular material of polyethylene or polypropylene is used as the core material, the specific gravity of the core material is 1 or less, so that it is light,
The buoyancy at the time of washing improves the workability by floating on the water, and also prevents a burden on the scalp of the subject (customer), thereby providing excellent workability.

According to the invention described in claim 8, claim 1 is provided.
In addition to the effects of the inventions of claims 6 to 6, a. Since the cap has a projection that fits the core material to the lid, the integration of the chap and the rod is firmly connected, preventing slippage between the rod and the cap. Can be enhanced. b. It is possible to prevent the permanent liquid and the cleaning liquid from entering the rod portion from the end portion of the rod portion and to prevent the rod portion from being hydrated, to maintain a light weight and to improve hygiene and safety. c. Even if a large force is applied to the rod during the winding operation,
The cap portion does not fall off the rod portion, and the strength is extremely high and the durability can be improved. d. Since the cap portions are provided at both ends of the rod portion, the ends of the rod portion are prevented from being crushed or twisted, so that the operability can be improved. e. Since the rod part is formed of an elastic hollow body, moderate elasticity and a feeling of fit on the surface are obtained, and while exhibiting a moderate anti-slip effect on the fingertip, the permanent rod fits softly naturally with the hair, It is possible to easily wind the hair around the permanent rod. f. Even if the permanent rod comes into contact with the hair, there is no breakage or loss of hair, and damage to the hair can be prevented. g. Since the rod portion is formed of an elastic hollow body, it is hardly damaged even when dropped, and has excellent durability. h. Since the structure is simple, the manufacturing cost can be reduced and the economy is excellent. i. By fitting the core material to the projection inside the cap portion by external fitting or internal fitting, the integration between the cap portion and the core material becomes strong, and the durability can be improved.

According to the ninth aspect of the present invention, a first aspect is provided.
In addition to the effects of the invention described in any one of (1) to (10) above, Since the cap portion has a slip preventing portion such as knurling and a concave portion in the outer fitting portion, it is possible to prevent the finger from slipping during the treatment and to significantly improve the workability during the treatment. b. Since a single pin insertion hole is provided between the cap lid of the cap and the rubber stopper, a single pin is inserted between the insertion holes of the permanent rod with hair bundles wound, so that the permanent rod head Permanent rods can be erected at right angles to the ground. As a result, the conventional permanent rod was not capable of spiral curl, but it was possible to perform spiral curl simply by inserting a single pin into the insertion hole with one permanent rod, increasing versatility. it can.

According to the tenth aspect, in addition to the effects of the first to ninth aspects, a. The concave portion on the outer surface of the elastic hollow body exerts an anti-slip effect, and the workability of winding the hair can be improved. b. The permanent liquid stays in the concave portion, and the penetration and fixation of the permanent liquid to the hair can be enhanced, and a uniform permanent wave can be formed, thereby improving the quality of the permanent.

[Brief description of the drawings]

FIG. 1 is a perspective view of a permanent rod according to Embodiment 1 of the present invention.

2A is a cross-sectional view taken along line AA of FIG. 1. FIG. 2B is a cross-sectional view taken along line BB of FIG.

FIG. 3 is a state diagram showing a use state of the permanent rod according to the first embodiment of the present invention.

FIG. 4 is a state diagram when a permanent rod is wound in the first embodiment of the present invention.

FIG. 5 is a cross-sectional view of a permanent rod according to Embodiment 2 of the present invention.

FIG. 6 is an essential part cross-sectional view of a cap portion of a permanent rod according to Embodiment 2 of the present invention.

FIG. 7 is a sectional view of a main part of a cap portion of a permanent rod according to a third embodiment of the present invention.

FIG. 8 is a perspective view of a permanent rod according to Embodiment 4 of the present invention.

FIG. 9 is a side view of a main part of a cap portion of a permanent rod according to a fourth embodiment of the present invention.

FIG. 10 is a longitudinal sectional view of a rod portion of a permanent rod according to a fifth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Permanent rod 2 Cap part 3 Cover part 4 Rubber stopper part 5 External fitting part 6 Rod part 7,7a Elastic hollow body 8,8a Skin layer 9,9a Core material 10 Permanent paper 11 Hair bundle 11a Hair root 12 Ring rubber 20a Cap part 20b Cap part 21 Fin 23 Core material 22 Protrusion part 31 Permanent rod of the fourth embodiment 32 Cap part 33 Slip prevention part 34 External fitting part 35 Recess 36 Insertion hole 36a Single pin guide 37 Recess

Claims (10)

[Claims] A low-foamed hollow synthetic rubber or thermoplastic elastomer having a cap portion having a rubber stopper at one end, a skin layer on the surface having the cap portions at both ends, and a thermoplastic elastomer;
An elastic hollow body made of a soft synthetic resin, a rod portion having a hollow or solid synthetic resin inserted into the hollow portion of the elastic hollow body and fixed by pressure, and a core material formed of wood or the like, A rod for permanent use, comprising: 2. A method according to claim 1, wherein said synthetic rubber is a butadiene rubber (B).
R), styrene-butadiene rubber (SBR), isoprene rubber (IR), ethylene-propylene rubber (EP
M), butyl rubber (IIR), chloroprene rubber (C
R), nitrile rubber (NBR), acrylic rubber (AC
M, ANM), urethane rubber (U), silicone rubber (Q), fluoro rubber (FPM), vulcanized rubber, polyether rubber (POR, CHR, CHC), chlorosulfonated polyethylene (CSM), polyepichlorohydride 2. The permanent rod according to claim 1, wherein the rod is a compound of at least one of phosphorus or a combination thereof with a filler. 3. 3. The thermoplastic elastomer is an ionomer such as stereoblock polypropylene, 1,2-polybutadiene, or a polyolefin having an ion cluster; or a hard material such as a polystyrene, a polyurethane, an olefin (TPO), a polyester, or a polyamide. Block polymers with chain thermoplasticity, graft polymers such as polyethylene and fluororesin, nitrile rubber
3. The method according to claim 1, wherein the filler is made of at least one of a polyvinyl chloride copolymer, a dynamically vulcanizable thermoplastic elastomer (TPV), and a composite of the filler and the filler. Rod for permanent. 4. The cap portion has a cylindrical portion, a rubber stopper formed by cutting one end of the cylindrical portion in an uneven shape, and an end of the rod portion at the other end of the cylindrical portion. An outer fitting portion to be fitted,
A lid portion formed in a wall shape between the rubber stopper portion and the outer fitting portion and in close contact with an end portion of the rod portion, and a fingertip non-slip comprising an uneven portion or a small hole formed on the surface of the cylindrical portion; 4. A fin portion provided on the inner wall of the outer fitting portion and / or one or more fin portions cut and fixed in the elastic hollow body. 5. A rod for permanent use according to the above. 5. The elastic hollow body according to claim 1, wherein the skin layer has a thickness of 2 μm to 10 μm.
The permanent rod according to any one of claims 1 to 4, having a thickness of 00 m, preferably 20 m to 800 m, more preferably 50 m to 500 m. 6. The expansion ratio of the elastic hollow body is 1.5 to 5
Foam, preferably 1.8-3.5 times and formed of closed cells, having a Shore hardness of 20-80, preferably 20-55. 6. The permanent rod according to any one of the above items 5. 7. The core material is made of a tubular or rod-shaped body formed of a polyolefin such as polyethylene, polypropylene, or polystyrene, or a polyolefin-based copolymer, the outer diameter of which is 5% of the cross-sectional diameter of the rod portion. / 7 to 1 /
5, preferably 2/3 to 1/4, and the outer diameter of the core is 1.5 to 25%, preferably 2 to 20% larger than the inner diameter of the hollow part of the elastic hollow body. The permanent rod according to any one of claims 1 to 6, wherein: 8. A projection formed in the center of the lid portion on the side of the outer fitting portion, the projection portion being fitted by fitting the end portion of the core material inside or outside, and the core material is made of polyethylene. And a tubular or rod-shaped body formed of polyolefin such as polypropylene, polystyrene or the like, or a polyolefin-based copolymer, the outer diameter of which is 5/7 to 1/5, preferably 2 /, of the cross-sectional diameter of the rod portion. 3 to 1/4, and the outer diameter of the core is 0.5 to 1.1 times the inner diameter of the hollow part of the elastic hollow body.
The permanent rod according to any one of claims 1 to 6, characterized in that the rod is formed at a ratio of 0.8 times to 1.05 times. 9. The cap portion is a slip prevention portion formed by knurling or an uneven portion on an outer peripheral wall of the lid portion, and / or a cap portion wall between the rubber stopper portion and the lid portion. 2. A pin insertion hole, such as a single pin or a U.S. pin, provided at a symmetrical position of a pin.
The rod for permanent use according to any one of Items 1 to 8. 10. The elastic hollow body according to claim 1, further comprising a concave portion formed in the outer surface of the elastic hollow body by being cut in parallel in a length direction. Rod for permanent.