A method for manufacturing artificial nail-decorative stones comprises steps of injecting acrylic resin to form an artificial nail-decorative molded material of various designs, coating the entire molded material with a transparent UV-curing paint, radiating ultraviolet light on the coated material for curing, depositing aluminum foil on stone bottoms to be adhered to natural nails, and cutting the foil-deposited material into individual pieces by using ultrasonic wave.
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[0001] 1. Field of the Invention
[0002] The present invention relates to artificial nail-decorative stones and a manufacturing method thereof, and more particularly to artificial nail-decorative stones that are obtained from coating an UV-curing paint on acrylic resin and a manufacturing method thereof.
[0003] 2. Description of Prior Art
[0004] There are lots of nail-decorative accessories such as so-called nail hanger or dangle accessories which are nail hangers of hundreds of cubic designs with rhinestones of diverse sizes and shapes (these accessories are hung on nail tips by using O rings or adhesive-type coupling rings), and nail charms which are plainly curved accessories put on nails (these accessories are adhered on nails by using the top coat or nail adhesives).
[0005] The rhinestone is typical as a material for conventional nail decorations, and most materials for the other nail-decorative accessories are cubic ones and the like such as nail hangers or nail charms formed by coating gold or silver on the substance of zinc or brass.
[0006] However, the rhinestone is expensive and hard, and a lump of rhinestone is cut into pieces for machining, so that difficulties exists in the machining as well as lots of time and cost are required. In particular, the nail hangers and nail charms of existing metal coat have been developed and sold only in two colors, so that there exists a limit in expressing diverse colors for decorations.
[0007] Further, it is relatively heavy, which causes inconvenience.
[0008] Accordingly, it is an object of the present invention to provide a simple and economic method for manufacturing artificial nail-decorative stones by solving the above problems.
[0009] It is another object of the present invention to provide artificial nail-decorative stones which are light-weighted and cheap.
[0010] The object of the present invention is achieved by artificial nail-decorative stones obtained from coating an acrylic resin-based molded material with a transparent UV-curing paint and depositing aluminum foil on the bottom of the molded material.
[0011] The other object of the present invention is achieved by a method for manufacturing artificial nail-decorative stones comprising steps of injecting acrylic resin to form an artificial nail-decorative molded material of various designs, coating the entire molded material with a transparent UV-curing paint, radiating ultraviolet light on the coated material for curing, depositing aluminum foil on stone bottoms to be adhered to natural nails, and cutting the foil-deposited material into individual pieces by using ultrasonic wave.
[0012] The above objects and other features of the present invention will become more apparent by describing in detail a preferred embodiment thereof with reference to the attached drawings, in which:
[0013]
[0014]
[0015]
[0016]
[0017]
[0018] In case that an acrylic resin-based molded material is used for nail-decorative stones and the material is used, as it is, in the state that aluminum foil is deposited on the lower side thereof, ill effects are causes that the acrylic resin is dissolved by the acetone solvent contained in manicure, top coat, and the like and the colors of the acrylic resin-based stones fade out. Accordingly, the present invention, before depositing the aluminum foil, coats a transparent UV-curing paint
[0019] Aluminum foil is deposited on the lower side of a material
[0020]
[0021] If the UV-curing paint coating, curing, and the aluminum foil deposition are completed through the process, the stone of acrylic resin-based material is ultrasonically cut into individual pieces.
[0022] [EMBODIMENT
[0023] Nail-decorative molded material of diverse shapes such as hemisphere, rectangle, and the like was fabricated with acrylic resin through the injection molding manner. after ultrasonic cleaning on the material, a process for electrical discharge and dust removal proceeded with the material. A transparent UV-curing paint (Ubiron 417A, manufactured by Mitsubishi plastics engineering) which is primarily a mixture of modified acrylate oligomer and monomer was diluted in a diluting agent (No. 25 or 27, manufactured by Mitsubishi plastics engineering) to have a viscosity of 10±2 seconds (Ford Cap NO 4) at temperature of 25° C. Nozzles of 0.8-11.0 mm were used to jet the paint at an air pressure of 3.0-3.5 kg/cm
[0024] As can be seen in the detailed description and the accompanying drawings of the present invention, the artificial stones of the present invention are molded through the injection molding manner without extra machining such as cutting and so on, so diverse shapes can be easily obtained such as rectangle, hemisphere, star, heart, cubic or 3D-nail hanger, nail charm which is a plainly curved accessory, and so on, rather than 8-angled shape, 12-angled shape, and the like of the conventional rhinestone. Further, the present invention enables artificial nail-decorative stones to be manufactured in a simple process and a low cost.
[0025] In particular, the acrylic resin-based stones have advantages of hundreds of diverse colors and excellent gloss, as well as that the stones are light-weighted.