Plastic and nonmetallic article shaping or treating: processes – With severing – removing material from preform mechanically,... – Surface finishing
Reexamination Certificate
2000-02-10
2001-02-20
Kuhns, Allan R. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
With severing, removing material from preform mechanically,...
Surface finishing
C264S222000, C264S338000
Reexamination Certificate
active
06190593
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a false nail for nail art which is mounted, by a woman, on the finger's nail for smartness or fashion.
2. Related Art
A clean nail of a human being is beautiful in itself. However, nail care has been taken since the age of ancient Egypt, and in modern ages, a neatly cared beautiful fingertip is representative of woman's charm and widely recognized. Not only the nail itself is beautiful, but also nail coloring for applying color to the nail is carried out. Further, not only a monochrome is applied, but also the nail art for depicting a pattern designed with a small flower pattern is carried out. However, when the nail art is once applied to the woman's nail, the same design remains attached to the nail unless the pattern is peeled off, thus posing a problem that applying the nail art being suitable for woman's total fashion requires time and trouble. Further, a beautiful nail shape is required, which is however the matter of the body, and there is a problem that the requirement cannot be met immediately. To cope with such a problem as noted above, a false nail pasted on the nail is devised, and nail art is applied to the false nail to thereby enable the provision of nail art simply. In view of this, a ready-made false nail capable of being pasted simply is sold as a replacing chip.
However, such a replacing chip as described is an existing ready-made false nail chip, while a nail of a finger of a human being is different in a width of a nail plate, a curve of a nail plate and a shape of a nail plate margin according to respective fingers, and therefore, the existing ready-made false nail chip is not always fitted exactly to the curved state of a user's nail plate, thus posing a problem that the false nail chip is loosened and peeled off easily, or the shape of the margin is not fitted, posing a problem that such a false nail chip as described is understood to be a false nail apparently.
In view of the above, the existing false nail chip is forcibly matched to the curve of the nail to be pasted, and the rear end of the false nail chip is matched to the portion of the cuticle when the nail is grown, which are pasted together by a powerful an adhesive. Even if they are pasted with much trouble, when the nail grows, the rear end of the false nail chip is parted from the cuticle, being unsightly. So, it is desired that the false nail chip be peeled off and repasted. However, since the false nail chip is pasted powerfully as described above, the false nail chip gets scratched at various parts when peeling off, failing to use again, thus posing a problem that a new false nail chip be pasted.
In order to solve the problems encountered in the existing ready-made false nail chip, there is proposed to individually manufacture, every nail of respective fingers, false nail chips fitted to the shapes thereof. For example, there is proposed a method for manufacturing an artificial nail disclosed in Japanese Kokoku Patent Publication H07-73532(1995). However, this method comprises: after a plaster model as the first model has been prepared from a precise impression of a fingertip portion including a nail and its peripheral portion, providing an extended bed at the end thereof to serve as a master model, taking again an impression from the master model, preparing again a second model by plaster from the impression, manufacturing a desired shaped artificial nail pattern on a nail portion of the second model, taking an impression pattern for the artificial nail model from the artificial nail pattern, and forming an artificial nail being consisted of the hardening resin in a gap between the impression pattern and a nail portion of the second model from which the artificial nail model is removed, posing a problem that the processes for preparing the second model are complicated and take time and labor.
The present invention is to solve the problem of the existing ready-made false nail chip as noted above, and provides a method for manufacturing precise false nail chips reducing time and labor imposed on the manufacturing of false nail chips adjusted to shapes of respective nails of individual persons, and further provides an arrangement wherein there is provided a false nail chip which can be used for a long period of time such that a pasted false nail can be easily peeled off and the removed false nail can be pasted again as necessary; where a nail grows to part from a cuticle, the parting from the cuticle can be corrected by re-pasting; and various false nails can be easily replaced and pasted while adjusting to visiting destinations or atmospheres encountered.
SUMMARY OF THE INVENTION
For solving the problem as noted above, according to a first aspect of the present invention, there is provided a method for manufacturing a false nail chip, the method comprising: building an impression material on a tray having a size for holding a fingertip shape; pressing a fingertip including a nail portion against the impression material to take a precise impression of the nail portion; injecting ground plaster mud into the precise impression of the nail portion taken and forming a fingertip plaster model including a nail portion comprising a nail plate, a nailtip and a nail plate margin by hardening; shaving the precise impression at the extreme end from the nailtip of the fingertip plaster model to form an enlarged cavity; injecting the plaster mud into the enlarged cavity to integrally add a plaster coarse pattern of a nailtip extending portion to the fingertip plaster model to form a false nail plaster coarse pattern; removing the false nail plaster coarse pattern from the precise impression; adjusting the nail chip shape of the nail chip side plaster coarse pattern to the nail shape of the nail plate side plaster model to register a nail width and a nail curve degree by hand shaving and determining a nailtip length to finish into a fingertip plaster model for a false nail chip; after a resin parting material has been coated on the nail portion of the finished plaster model for a false nail chip, applying a room temperature polymerization resin to a thickness of a false nail to adjust into a false nail shape, after which it is held at a hardening temperature of room temperature polymerization resin for polymerization hardening to form a resin hardened false nail chip; removing the resin hardened false nail chip from the fingertip plaster model for a false nail chip; and shaping and finishing the surface and the extreme end of the resin hardened false nail chip. For the room temperature polymerization resin, for example, acrylic resin for a false tooth or a dental (tooth) plate is used.
According to a second aspect (depending on the first aspect), there is provided a method for manufacturing a false nail chip, the method comprising: after a false nail plaster coarse pattern has been finished to a fingertip plaster model for a false nail chip, placing a wax having a thickness corresponding to a thickness and a size of a false nail chip on the nail portion of the fingertip plaster model and lightly pressing down into a false nail chip wax original mold; embedding the fingertip plaster model for a false nail chip having the false nail chip wax original mold into plaster mud of a flask lower ring having the plaster mud with the false nail chip wax original mold exposed; after the plaster mud has been hardened, coating a releasing agent on the hardened plaster, after which, placing a flask upper ring thereon, and injecting the ground plaster mud into the flask upper ring and embedding the false nail chip wax original mold on the fingertip plaster model for a false nail chip into the plaster mud; after the plaster mud has been hardened, heating the flask to melt and remove the wax to form a cavity of the size of a false nail chip; opening the flask, filling the cavity with a heat curing polymerization resin, after which, placing the flask upper ring thereon, closing the flask upper ring and heating th
Armstrong, Westerman Hattori, McLeland & Naughton
Kuhns Allan R.
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