Filing tool for hardened-skin care and method of manufacturing the same

Abstract

Disclosed is a filing tool for hardened-skin care, including a plurality of filing parts having double plated nickel and stone powders fixed to such nickel on a metal plate. A method of manufacturing the filing tool is also provided, including setting a patterned photosensitive dry film on the metal plate, exposing the metal plate set with the dry film to light, removing a non-exposed portion of the dry film to form a masking pattern, plating nickel on the metal plate formed with the masking pattern to form a first nickel-plated layer, followed by uniformly applying stone powders on the first nickel-plated layer, further plating nickel on the stone powders to form a second nickel-plated layer, and fixing the stone powders between the first nickel-plated layer and the second nickel-plated layer, followed by removing the masking pattern. Thereby, since the stone powders, serving as a filing material, are securely fixed to nickel, filing efficiencies improve. In addition, the filing tool has higher strength, due to the use of the metal plate.

1 . A filing tool for hardened-skin care, comprising a plurality of filing parts formed on a metal plate, wherein the filing parts each include a first nickel-plated layer, a second nickel-plated layer, and stone powders fixed between the first nickel-plated layer and the second nickel-plated layer.  
   
   
       2 . A method of manufacturing a filing tool for hardened-skin care comprising a plurality of filing parts formed on a metal plate, the method comprising: 
 first step of setting a patterned photosensitive dry film on the metal plate;    second step of exposing the metal plate set with the dry film to light;    third step of removing a non-exposed portion of the dry film to form a masking pattern;    fourth step of plating nickel on the metal plate formed with the masking pattern to form a first nickel-plated layer, followed by uniformly applying stone powders on the first nickel-plated layer;    fifth step of further plating nickel on the stone powders to form a second nickel-plated layer; and    sixth step of fixing the stone powders between the first nickel-plated layer and the second nickel-plated layer, followed by removing the masking pattern.    
   
   
       3 . The method as defined in  claim 2 , further comprising ultrasonicating the metal plate formed with the masking pattern to remove impurities, followed by acid-cleaning the metal plate to remove an oxidation film of the metal plate and then activating a surface of the metal plate, between the third step and the fourth step.  
   
   
       4 . The method as defined in  claim 2 , further comprising acid-cleaning the metal plate, and then activating a surface of the metal plate, followed by a nickel-plating process, after the sixth step.