The present invention is directed to a plastic extension for a nail covering and a nail applique kit including at least one plastic extension, an adhesive including a UV gel a cyanoacrylate, a free radical curable monomer composition or a PSA and an optional processing aid.

It is an object of the present invention to provide a photocurable artificial nail composition that suppresses heat pain during curing, suppresses yellowing (including yellowing before curing), and has color tone stability. The photocurable artificial nail composition of the present invention includes a photopolymerization initiator and a polymerizable compound, in which the photopolymerization initiator contains a compound represented by General Formula (1), provided that the photopolymerization initiator does not contain an -hydroxyalkylphenone photopolymerization initiator, and the composition does not contain a peroxide thermal polymerization initiator,

##STR00001## wherein R represents a hydrocarbon group having 1 to 5 carbon atoms.

It is an object of the present invention to provide a photocurable artificial nail composition that suppresses heat pain during curing, suppresses yellowing (including yellowing before curing), and has color tone stability. The photocurable artificial nail composition of the present invention includes a photopolymerization initiator and a polymerizable compound, in which the photopolymerization initiator contains a compound represented by General Formula (1), provided that the photopolymerization initiator does not contain an -hydroxyalkylphenone photopolymerization initiator, and the composition does not contain a peroxide thermal polymerization initiator,

##STR00001## wherein R represents a hydrocarbon group having 1 to 5 carbon atoms.

A nail tip curing composition includes an Extend Gel, an edge-off flat brush, a nail filing device, a plurality of GEL-X tips, a pH Bonder, and a Non-Acidic Gel Primer. The pH Bonder forms a pH Bonder layer on a surface of a fingernail. The Non-Acidic Gel Primer forms a Non-Acidic Gel Prime layer overlapped on the pH Bonder layer. The Extend Gel forms an Extend Gel layer overlapped on the Non-Acidic Gel Prime layer. The GEL-X tip is filed by the nail filing device and the Extend Gel is applied on an underside contact surface of the Gel-X tip by the edge-off flat brush. The underside contact surface of the Gel-X tip is contacted with the Extend Gel layer on the fingernail in such a manner that the Gel-X tip is firmly affixed on the fingernail.

A nail tip curing composition includes an Extend Gel, an edge-off flat brush, a nail filing device, a plurality of GEL-X tips, a pH Bonder, and a Non-Acidic Gel Primer. The pH Bonder forms a pH Bonder layer on a surface of a fingernail. The Non-Acidic Gel Primer forms a Non-Acidic Gel Prime layer overlapped on the pH Bonder layer. The Extend Gel forms an Extend Gel layer overlapped on the Non-Acidic Gel Prime layer. The GEL-X tip is filed by the nail filing device and the Extend Gel is applied on an underside contact surface of the Gel-X tip by the edge-off flat brush. The underside contact surface of the Gel-X tip is contacted with the Extend Gel layer on the fingernail in such a manner that the Gel-X tip is firmly affixed on the fingernail.

The invention is a device for applying artificial nails to the natural nails of a user. The device includes a central file that can be used to file a user's fingernails or toenails. A variety of artificial nails are positioned around the outer perimeter of the emery board via a plurality of stems. Advantageously, one surface of the nail file includes a housing that can be sized and shaped with a central indentation to removably attach any of a wide variety of accessories, such as a nail glue pen. The device therefore streamlines application of the artificial nails to the natural nails of a user.

The invention is a device for applying artificial nails to the natural nails of a user. The device includes a central file that can be used to file a user's fingernails or toenails. A variety of artificial nails are positioned around the outer perimeter of the emery board via a plurality of stems. Advantageously, one surface of the nail file includes a housing that can be sized and shaped with a central indentation to removably attach any of a wide variety of accessories, such as a nail glue pen. The device therefore streamlines application of the artificial nails to the natural nails of a user.

A functional artificial fingernail having a terminal member located on a distal tip of the artificial fingernail for operatively interacting with a touch screen. The terminal member may be a passive or active stylus for operatively interacting with a touch screen. The artificial fingernail may also comprise an electronic display to which desired images, colors, patterns, symbols and other graphic elements may be downloaded for display on the fingernail of the user. A processor may control the electronic display, a geolocation receiver, a microphone, a speaker, and a haptic device, allowing geolocation of a user, and allowing audio and mechanical vibration output to the user. The artificial fingernail provides a substantial improvement in data entry via a touchscreen over the use of a stylus pen, reduces or eliminates hazardous waste by reducing use of fingernail paints and fingernail paint removers.

A functional artificial fingernail having a terminal member located on a distal tip of the artificial fingernail for operatively interacting with a touch screen. The terminal member may be a passive or active stylus for operatively interacting with a touch screen. The artificial fingernail may also comprise an electronic display to which desired images, colors, patterns, symbols and other graphic elements may be downloaded for display on the fingernail of the user. A processor may control the electronic display, a geolocation receiver, a microphone, a speaker, and a haptic device, allowing geolocation of a user, and allowing audio and mechanical vibration output to the user. The artificial fingernail provides a substantial improvement in data entry via a touchscreen over the use of a stylus pen, reduces or eliminates hazardous waste by reducing use of fingernail paints and fingernail paint removers.

A method and system for nail recognition and positioning are disclosed. The method includes: S1, acquiring, by a recognition device, first image information of an operating area through photographing, sending the first image information to a target-detecting network to generate corresponding second image information, and comparing to obtain nail mask images after performing segmentation; S2, obtaining true coordinates of a nail point cloud through calculation of an original 3D point cloud and the nail mask images; S3, converting the nail point cloud to a calibration coordinate system, which is determined by locating a printing device below the identification device; S4, traversing each nail to obtain angle information of the nails according to point cloud information of the nails; and S5, projecting point cloud coordinates of each nail to a two-dimensional plane, and obtaining a deflection angle of each nail.