JP2007319346A - Artificial nail and production apparatus and method for it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an artificial nail which achieves an inexpensive production with a three-dimensional decorative part and is further made durable for a prolonged use, a production apparatus for manufacturing it and a production method using it. <P>SOLUTION: The production apparatus of artificial nails manufactures an artificial nail in which a base part with a curved surface formed on its rear following the shape of the surface of a natural nail and a decorative part with a three-dimensional pattern on its surface are molded integrally by a resin. It is provided with top and bottom dice 10 and 20 which are heated so much as to harden a molten resin gelatinous while rotating at high speed. The top and bottom dice 10 and 20 are made flexible and has a number of cavities 11 and 21 formed in respective joint surfaces and runners 12 and 22 are formed in the respective cavities 11 and 21 from the centers of the top and bottom dice 10 and 20. The top and bottom dice 10 and 20 are put together and are rotated at a high speed getting the molten resin injected into the runners 12 and 22 to fill the cavities 11 and 21. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an artificial nail to be attached to a human nail as nail art, an artificial nail manufacturing apparatus for manufacturing the artificial nail, and an artificial nail manufacturing method using the manufacturing apparatus. The present invention relates to an artificial nail having a decorative part with decoration, an artificial nail manufacturing apparatus, and an artificial nail manufacturing method.

  In recent years, although nail art has become popular, not only is it difficult to stretch nails long and beautifully, but there are many people who are hesitant to spend a large amount of money and time in a nail salon. For this reason, various artificial nails that can enjoy nail art only when necessary have been proposed.

  For example, in Patent Document 1, a base molded to fit each person's nails is prepared, a gel-like acrylic resin material is applied to the surface of the base to a desired thickness, and the resin material is dried for several minutes. After obtaining the lower layer member, a flat shaped decorative article is attached to the lower layer member as necessary, and a transparent gel-like acrylic resin material is applied to the lower layer member and the surface of the decorative article. A method for producing an artificial nail is disclosed in which an upper layer member is obtained by drying for about 20 minutes, and then the base is peeled from the lower layer member. The artificial nail manufactured by such a method has a beautiful appearance for a long time even if the decorative product is easily discolored like a pressed flower because the decorative product is sealed between the lower layer member and the upper layer member. Maintained.

  Further, Patent Document 2 discloses an artificial nail in which a decorative object is detachably attached to an artificial nail body via an attaching means. The attachment means is configured by forming a hollow socket portion in the artificial nail body and arranging two springs on the socket portion, while providing a protrusion on the ornament to be locked to the spring. Since the artificial nail can change the decoration, the user can easily change the design of the artificial nail.

JP 2001-169823 A JP 2002-282040 A

  Since the manufacturing method of artificial artificial nails disclosed in Patent Document 1 is to interpose a flat decorative article between a lower layer member and an upper layer member, an artificial artificial nail having a three-dimensional decorative article is manufactured. It is not possible to fully demonstrate originality and uniqueness. Further, the artificial nail disclosed in Patent Document 2 is troublesome to manufacture because the attachment means for attaching a three-dimensional ornament to the artificial nail is provided with a spring or a protrusion. Not only does the unit price of the product increase, but it is easy to break and it is difficult to withstand long-term use.

  Accordingly, the present invention provides a false nail having a three-dimensional decorative portion, which can be manufactured at a low cost, and can withstand long-term use, and an artificial nail manufacturing apparatus for producing this false nail, It is an object of the present invention to provide an artificial nail manufacturing method using the manufacturing apparatus.

  The artificial nail according to the present invention is characterized in that a curved surface that conforms to the shape of the surface of the nail is formed on the back surface, and a decorative portion having a three-dimensional pattern formed on the surface is formed of a resin.

  According to this artificial nail, when the back surface of the artificial nail is formed into a curved surface that follows the shape of the surface of the nail, both of the artificial nail are attached to the human nail by glue (adhesive). Is in close contact. And a decoration part can exhibit originality and uniqueness by giving a three-dimensional pattern. Furthermore, by forming the artificial nail with resin, it is possible not only to withstand long-term use, but also to provide an artificial nail with a fine decoration on the decorative portion at a low cost.

  In addition, the artificial nail according to the present invention, which is different from the above, has a base portion having a curved surface that conforms to the shape of the surface of the nail on the back surface and a decorative portion having a three-dimensional pattern on the surface, which are integrally formed of resin. It is characterized by having.

  According to this artificial nail, the base part which formed the curved surface which follows the shape of the surface of a nail | claw on the back surface is integrally formed with a decoration part, and a base part is stuck on a person's nail | claw with a glue. Since the artificial nail in which the base portion is formed is stuck in a wider range than the artificial nail in which the base portion is not formed, the sticking force is strengthened, and it can be made even more difficult to peel from the nail. Furthermore, a decorative pattern can be enhanced by attaching a planar pattern or the like to the surface of the base portion. Moreover, the decoration part can exhibit originality and a unique product by giving a three-dimensional pattern. And the artificial nail | claw is shape | molded by resin, and a fine decoration is given to a decoration part, and also the artificial nail | claw which has durability can be provided cheaply.

  An artificial nail manufacturing apparatus according to the present invention is an artificial nail manufacturing apparatus that manufactures an artificial nail while superimposing an upper mold and a lower mold to be heated and rotating at high speed, the upper mold and / or the lower mold. The mold is flexible, and a large number of cavities are formed in the joint surface of the flexible upper mold and / or lower mold, and runners are formed in the respective cavities from the center of the upper mold and / or the lower mold. Is formed, and a plurality of concave portions and convex portions that are fitted to the joint surfaces of the upper die and the lower die are formed.

  According to this artificial nail manufacturing apparatus, a thermosetting molten resin is injected into the runner while the upper mold and the lower mold are superposed and heated at high speed, and the molten resin is injected into the cavity by centrifugal force. The molten resin is filled into the inside and becomes a gel by preheating of the upper mold and the lower mold, and then dried, whereby the resin is cured and an artificial nail is manufactured. Since a large number of cavities are formed in the upper mold and / or the lower mold, a large number of artificial nails can be manufactured at a time. In addition, the artificial nail manufactured in the cavity is as large as the nail, but the upper mold and / or the lower mold forming the cavity have flexibility so that the opening side of the cavity swells. By bending the upper mold and / or the lower mold, the manufactured artificial nail can be easily taken out from the cavity. Therefore, the upper die or the lower die that does not form a cavity does not necessarily have flexibility. Further, a large number of recesses and projections formed on the joint surfaces of the upper mold and the lower mold are fitted together, so that the cavities formed in the upper mold and / or the lower mold are prevented from being displaced. Either the concave portion or the convex portion may be formed as an upper mold or a lower mold.

  In the artificial nail manufacturing apparatus according to the present invention, the cavity may be formed in a reverse taper shape in which the opening side is narrower than the bottom side. According to this artificial nail manufacturing apparatus, since the cavity is formed in an inversely tapered shape, a pattern to be applied to the surface of the decorative portion is formed on the bottom surface of the cavity, and the back surface of the decorative portion or the base portion and the decorative portion are formed. It can be manufactured so as to have a three-dimensional decoration part in which the coupling part is narrower than the surface of the decoration part and the surface of the decoration part expands. Even with an artificial nail having such a decorative part, since the mold has flexibility, bending the mold so that the opening side of the cavity swells, thereby opening the cavity of the inversely tapered shape The decorative part can be taken out from the cavity with the side opened.

  In the artificial nail manufacturing apparatus, it is preferable that a continuous seam is formed on the side surfaces of the upper mold and the lower mold. According to this artificial nail manufacturing apparatus, even if the plurality of recesses and projections formed in the upper mold and the lower mold are unevenly arranged, and only the specific recesses and projections are fitted. By making the joints formed on the side surfaces of the upper mold and the lower mold continuous, the alignment can be easily performed, and the working efficiency can be improved.

  An artificial nail manufacturing method according to the present invention is an artificial nail manufacturing method using any one of the artificial nail manufacturing apparatuses, wherein the upper mold and the upper mold are fitted to each other. Overlay the lower mold, preheat the upper mold and the lower mold to a temperature at which the thermosetting molten resin is cured, and rotate the upper mold and the lower mold at high speed while injecting the thermosetting molten resin into the runner. Thus, the molten resin is filled into the cavity, the molten resin in the cavity is gelled by preheating the upper mold and the lower mold, and the upper mold and the lower mold are placed in a dry atmosphere. It is characterized in that the cured resin is taken out from the cavity by curing, separating the upper mold and the lower mold, and bending the mold in which the cavity is formed.

  According to this artificial nail manufacturing method, the upper mold and the lower mold are overlapped, and a thermosetting molten resin is injected into the runner, but the molten resin is centrifuged by the high speed rotation of the upper mold and the lower mold. The cavity fills the cavity from the runner. And since the upper mold and the lower mold are preheated, the thermosetting molten resin in the cavity becomes a gel. Thereafter, the upper mold and the lower mold are placed in a dry atmosphere, whereby the gel-like resin is cured, and artificial nails are collectively manufactured in a large number of cavities. This artificial nail can be easily taken out from the cavity by bending so that the upper mold and the lower mold are separated and the opening side of the cavity expands.

  Further, in the artificial nail manufacturing method according to the present invention, the resin is a urethane resin, the preheating temperature is 70 to 80 ° C., the rotation speed is 700 to 1500 rpm, and the rotation time is 2 to 2. Preferably, the drying time is about 20 minutes. According to this artificial nail manufacturing method, when a urethane resin is used as the resin, the preheating temperature is 70 to 80 ° C., the rotation time is 2 to 3 minutes, and the drying time is about 20 minutes. The manufacturing time can be shortened compared to adopting

  ADVANTAGE OF THE INVENTION According to this invention, originality and uniqueness can be exhibited by providing the artificial nail which formed the decoration part which gave the three-dimensional pattern. In addition, since the artificial nail is molded of resin, an inexpensive and excellent durability can be provided. Therefore, you can purchase many kinds of artificial nails and enjoy fashion for a long time.

  An embodiment of an artificial nail according to the present invention will be described with reference to FIGS. 1 and 2. The artificial nail A shown in FIG. 1 is characterized in that the back surface 1b of the decorative portion 1 having a three-dimensional pattern on the front surface 1a is formed into a curved surface along the surface of the human nail N. In addition, the artificial nail B shown in FIG. 2 is formed by integrating a decorative portion 1 having a three-dimensional pattern on the front surface 1a and a base portion 2 having a back surface 2b formed into a curved surface along the surface of a human nail N. It is characterized by being molded.

  Both artificial claws A and B are made of, for example, urethane resin. Urethane resin is easy to injection mold and can produce a large number of artificial nails in a short time and at a low cost. However, as long as the material of the artificial nails A and B does not adversely affect the human body, an acrylic resin or other resin can be used in addition to the urethane resin. Since the urethane resin has quick drying properties than the acrylic resin, it is excellent in production efficiency. Since the acrylic resin is more transparent than the urethane resin, the transparent artificial nails A and B can be preferably manufactured.

  In any case, the decorative part 1 exhibits originality and uniqueness by applying a three-dimensional pattern such as a flower or a ribbon.

  Further, the back surface 1b of the decorative portion 1 or the back surface 2b of the base portion 2 is formed in a curved surface along the surface of the human nail N, so that the back surfaces 1b and 2b are in close contact with the human nail N. The back surfaces 1b and 2b of the artificial nails A and B and the human nails N are pasted by the user by glue (adhesive). In particular, since the base portion 2 is adhered to the human nail N in a wide range, the artificial nail B can be made more difficult to peel from the human nail N. In addition, the decorative effect can be enhanced by applying a planar pattern to the surface of the base portion 2.

  Here, an artificial nail manufacturing apparatus for manufacturing such artificial nails A and B will be described with reference to FIGS. The artificial nail manufacturing apparatus includes a disk-shaped upper mold 10 and a lower mold 20 as shown in FIG. The upper mold 10 and the lower mold 20 can be contacted and separated, and are rotated at a high speed in a joined state. In addition, a press (not shown) that rotates at high speed while maintaining a state in which the upper die 10 and the lower die 20 are sandwiched from above and below is provided.

  A large number of cavities 11, 21,... For molding the artificial claws A, B are formed on the joint surface of the upper mold 10 and / or the lower mold 20. As shown in the drawing, the cavities 11 and 21 are formed at regular intervals on a circle of one circumference, or may be formed at regular intervals on a plurality of concentric circles. In any case, the runners 12 and 22 are formed in the upper mold 10 and the lower mold 20 from the center to the cavities 11 and 21. However, the runners 12 and 22 may be formed only on one of the upper mold 10 and the lower mold 20. Although not shown, the gates 13 and 23 that are the boundaries between the cavities 11 and 21 and the runners 12 and 22 are naturally narrowed. A molten resin inlet 14 is formed at the center of the upper mold 10, and a pipe (not shown) is connected to the inlet 14.

  Further, if the artificial nail A does not have the base portion 2 as shown in FIG. 1, the cavities 11 and 21 may be formed only in one of the upper mold 10 and the lower mold 20. Further, if the artificial nail B integrally molds the base portion 2 and the decorative portion 1 as shown in FIG. 2, for example, as shown in FIG. 4, the cavity 21 that forms the decorative portion 1 is the lower mold 20. The cavity 11 that forms the base portion 2 is formed in the upper mold 10, but may be reversed. In any case, the runners 12 and 22 are formed only on one or both of the upper mold 10 and the lower mold 20.

  The cavities 11 and 21 are formed in a reverse taper shape as shown in FIG. 4 so that the three-dimensional decorative portion 1 having the front surface 1a side larger than the back surface 1b side can be formed. . That is, the opening side of the cavities 11 and 21 is narrower than the bottom side. The bottom surface of the cavity 11 of the upper mold 10 protrudes in an arc shape in order to form the back surface 1b of the decorative portion 1 or the back surface 2b of the base portion 2 in a curved surface. Further, an unevenness (not shown) is formed on the bottom surface of the cavity of the lower mold 20 in order to give a pattern to the surface 1a of the decorative portion 1.

  The upper mold 10 and / or the lower mold 20 are made of a flexible material so that the decorative portion 1 can be taken out from the inverted tapered cavities 11 and 21. Specifically, it is manufactured by silicon rubber or elastomer.

  And in order to make the position of the cavity 11 of the upper mold | type 10 and the cavity 21 of the lower mold | type 20 correspond, the some convex part 15 and the recessed part 25 which fit to the joint surface of the upper mold | type 10 and the lower mold | type 20 are carried out. Is formed. However, the concave portion 25 may be formed in the upper mold 10 and the convex portion 15 may be formed in the lower mold 20. In any case, as shown in FIG. 4, the protrusion 15 is formed with a protrusion 15a so as not to come out of the mold, and the protrusion 15a is embedded in the mold. The convex portions 15 and the concave portions 25 are preferably formed at equal intervals. However, if the cavities 11 and 21 of the upper mold 10 and the cavities 11 and 21 of the lower mold 20 can be aligned, they are equally spaced. It does not need to be formed.

  In this case, seams 16 and 26 are formed on the side surface of the upper die 10 and the side surface of the lower die 20 so that the upper die 10 and the lower die 20 can be quickly aligned. The seams 16 and 26 are preferably formed by notches as shown in FIG. 3, but may be formed by line drawing or the like, or may be marked.

  Here, a method of manufacturing artificial nails A and B using such an artificial nail manufacturing apparatus will be described with reference to FIG. First, as shown by the solid lines in FIGS. 3 and 4, the upper mold 10 and the lower mold 20 are overlapped with each other using the seams 16 and 26 and are sandwiched by a press (not shown). At this time, when the convex portion 15 and the concave portion 25 are fitted, the upper and lower cavities 11 and 21 are in a continuous state. The superposed upper mold 10 and lower mold 20 are preheated to 70 to 80 ° C.

  Then, the upper mold 10 and the lower mold 20 are rotated at a high speed of 700 to 1500 rpm while injecting a thermosetting resin into the runners 12 and 22. When a urethane resin is employed as the thermosetting resin, the upper mold 10 and the lower mold 20 are rotated at a high speed for 2 to 3 minutes. When an epoxy resin is employed as the thermosetting resin, the upper mold 10 and the lower mold 20 are rotated at a high speed for about 10 minutes.

  Then, the molten resin in the runners 12 and 22 is filled into the cavities 11 and 21 by centrifugal force. The molten resin filled in the cavities 11 and 21 becomes a gel-like shape when the upper mold 10 and the lower mold 20 are preheated.

  Thereafter, the upper mold 10 and the lower mold 20 are removed from the press, transferred to a drying chamber, and dried. Whether the resin is a urethane resin or an epoxy resin, the gel-like resin is cured by drying for about 20 minutes, and the artificial nails A and B are completed.

  The artificial nail A is formed such that the back surface 1b of the decorative portion 1 is narrower than the front surface 1a, or the artificial nail B is formed such that the base portion 2, the decorative portion 1 and the coupling portion are narrower than the surface of the decorative portion 1. Thus, the decorative part 1 is embedded in the cavity 21. Therefore, the lower mold 20 is bent so that the opening sides of the cavities 11 and 21 swell. Then, as shown in FIG. 5, the cavities 11 and 21 are opened on the opening side, and the decorative portions 1 of the artificial claws A and B can be taken out from the cavities 11 and 21.

  In this way, the artificial nails A and B are manufactured in large quantities at a time, and therefore can be provided as inexpensive products. An accessory can be attached to the artificial nails A and B separately. And a user can enjoy fashion by sticking many kinds of artificial nails A and B to the nail.

  In addition, this invention can be variously changed within the range of the invention specific matter described in the claim, without being limited to the said embodiment. For example, the preheating temperature, the rotation time, and the drying time are examples of the resin, and are appropriately changed when using other resins.

  Alternatively, the cavities 11 and 21 may be formed only in one mold 10 and 20, and the cavities 11 and 21 may not be formed in the other mold 20 and 10, and in this case, the cavities 11 and 21 are not formed. The mold does not necessarily have flexibility.

It is a front view which shows 1st Embodiment of the artificial nail which concerns on this invention. It is a front view which shows 2nd Embodiment of the artificial nail based on this invention. It is a perspective view which shows one Embodiment of the manufacturing apparatus of the artificial nail which concerns on this invention. It is front sectional drawing which shows one Embodiment of the manufacturing apparatus of the artificial nail which concerns on this invention. It is front sectional drawing which expanded the principal part which shows one Embodiment of the manufacturing apparatus of the artificial nail which concerns on this invention.

Explanation of symbols

A, B ... artificial nail 1 ... decorative part 1b ... back face 2 ... base part 2b ... back face 10 ... upper molds 11, 21 ... cavity 12, 22 ... runner 15 ... convex part 25 ... concave part 16, 26 ... seam

Claims (7)

  An artificial nail characterized in that a curved surface that conforms to the shape of the surface of the nail is formed on the back surface, and a decorative portion having a three-dimensional pattern on the surface is molded from a resin.   An artificial nail characterized in that a base portion having a curved surface along the shape of the surface of the nail on the back surface and a decorative portion having a three-dimensional pattern on the surface are integrally formed of resin. An artificial nail manufacturing apparatus for manufacturing artificial nails while rotating the upper mold and the lower mold to be heated at high speed,
The upper mold and / or the lower mold have flexibility, and a large number of cavities are formed in the bonding surface of the upper mold and / or the lower mold, and the center of the upper mold and / or the lower mold is formed. A runner is formed in each of the cavities, and a plurality of concave portions and convex portions are formed to be fitted to the joint surfaces of the upper die and the lower die.   4. The artificial nail manufacturing apparatus according to claim 3, wherein the cavity is formed in a reverse taper shape in which the opening side is narrower than the bottom side.   5. The artificial nail manufacturing apparatus according to claim 3, wherein a continuous seam is formed on the side surfaces of the upper mold and the lower mold. An artificial nail manufacturing method using the artificial nail manufacturing apparatus according to any one of claims 3 to 5,
The upper mold and the lower mold are overlapped so that the concave and convex portions are fitted, and the upper mold and the lower mold are preheated to a temperature at which the thermosetting molten resin is cured,
The molten resin is filled into the cavity by rotating the upper mold and the lower mold at high speed while injecting the thermosetting molten resin into the runner,
The molten resin in the cavity is gelled by preheating the upper mold and the lower mold,
By placing the upper mold and the lower mold in a dry atmosphere, the gel resin is cured,
A method for manufacturing an artificial nail, comprising separating an upper mold and a lower mold and bending the mold in which the cavity is formed to take out the cured resin from the cavity.   The resin is a urethane resin, the preheating temperature is 70 to 80 ° C., the rotation speed is 700 to 1500 rpm, the rotation time is 2 to 3 minutes, and the drying time is about 20 minutes. The manufacturing method of the artificial nail of Claim 6 characterized by the above-mentioned.

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