Hair roller

Abstract

The present invention is concerned with a hair roller. The hair roller has an inner shell, an outer shell, and a middle shell positioned between the inner shell and the outer shell, all of the inner, middle and outer shells having a cylindrical profile defining a through cavity.

1 . A hair roller comprising:
 an inner shell, an outer shell, and a middle shell positioned between the inner shell and the outer shell, all of the inner, middle and outer shells having a cylindrical profile defining a through cavity, wherein:
 the inner, middle and outer shells are fixedly fitted connected together, and are arranged telescopically with respect with each other; 
 the inner shell, the middle shell and the outer shell are made of a plastic(s) material, a hook or hair adhesive material, and a metallic material, respectively; 
 the hair roller, in an assembled configuration, is provided with a plurality of cut-out regions from the metallic outer shell thus exposing a combination of an outwardly facing metallic surface defined by the outer shell and an outwardly facing surface including the hook or hair adhesive material of the middle shell; and 
 the ratio of the outwardly facing metallic surface and the outwardly facing surface including the hook or hair adhesive material is substantially 50:50 to 70:30, and 
   wherein the hair roller is provided with outwardly facing rim regions at opposite ends thereof, and the rim regions are exposed and not covered by the outer shell.   
     
     
         2 . A hair roller as claimed in  claim 1 , wherein the length and the diameter of the cylindrical hair roller is from substantially 30-120 mm and 10-90 mm, respectively. 
     
     
         3 . A hair roller as claimed in  claim 1 , wherein the inner shell is made of a material with a specific heat capacity of substantially 1800-2000 J/Kg-K. 
     
     
         4 . A hair roller as claimed in  claim 3 , wherein the inner shell is made of a material with a thermal conductivity of substantially 0.1-0.22 W/m-K. 
     
     
         5 . A hair roller as claimed in  claim 4 , wherein the inner shell is made of polypropylene or a polypropylene containing material. 
     
     
         6 . A hair roller as claimed in  claim 1 , wherein the middle shell is made of a material with a specific heat capacity of substantially 850-1670 J/Kg-K. 
     
     
         7 . A hair roller as claimed in  claim 6 , wherein the middle shell is made of a material with a thermal conductivity of substantially 0.2-6.3 W/m-K. 
     
     
         8 . A hair roller as claimed in  claim 7 , wherein the middle shell is made of nylon, ceramics, or a nylon or ceramics containing material. 
     
     
         9 . A hair roller as claimed in  claim 1 , wherein the outer metallic shell is made of a material with a specific heat capacity of substantially 412-913 J/Kg-K. 
     
     
         10 . A hair roller as claimed in  claim 9 , wherein the outer metallic shell is made of a material with a thermal conductivity of substantially 43-205 W/m-K. 
     
     
         11 . A hair roller as claimed in  claim 10 , wherein the outer metallic shell is made of stainless steel, brass, aluminium, or a combination thereof. 
     
     
         12 . A hair roller as claimed in  claim 11 , wherein the outer metallic shell is made of aluminium and has a thickness of substantially 0.5-0.6 mm. 
     
     
         13 . A hair roller as claimed in  claim 1 , wherein the ratio of the outwardly facing metallic surface and the outwardly facing surface including the hook or hair adhesive material is substantially 60:40. 
     
     
         14 . A hair roller comprising:
 an inner shell, an outer shell, and a middle shell positioned between the inner shell and the outer shell, all of the inner, middle and outer shells having a cylindrical profile defining a through cavity, wherein:
 the inner, middle and outer shells are fixedly fitted connected together, and are arranged telescopically with respect with each other; 
 the inner shell, the middle shell and the outer shell are made of a plastic(s) material, a hook or hair adhesive material, and a metallic material, respectively; 
 the hair roller, in an assembled configuration, is provided with a plurality of cut- out regions from the metallic outer shell thus exposing a combination of an outwardly facing metallic surface defined by the outer shell and an outwardly facing surface including the hook or hair adhesive material of the middle shell; and 
 the ratio of the outwardly facing metallic surface and the outwardly facing surface including the hook or hair adhesive material is substantially 50:50 to 70:30, and 
   wherein the inner shell, the middle shell, and the outer shell are made of materials with specific heat capacity of substantially 1800-200 J/Kg-K, 850-1670 J/Kg-K, and 412-913 J/Kg-K, respectively.   
     
     
         15 . A hair roller as claimed in  claim 14 , wherein the inner shell, the middle shell, and the outer shell are made of materials with thermal conductivity of substantially 0.1-0.22 W/m-K, 0.2-6.3 W/m-K and 43-205 W/m-K, respectively. 
     
     
         16 . A hair roller as claimed in  claim 14 , wherein the hair roller is provided with outwardly facing rim regions at opposite ends thereof, and the rim regions are exposed and not covered by the outer shell. 
     
     
         17 . A hair roller comprising:
 an inner shell, an outer shell, and a middle shell positioned between the inner shell and the outer shell, all of the inner, middle and outer shells having a cylindrical profile defining a through cavity, wherein:
 the inner, middle and outer shells are fixedly fitted connected together, and are arranged telescopically with respect with each other; 
 the inner shell, the middle shell and the outer shell are made of a plastic(s) material, a a hook or hair adhesive material, and a metallic material, respectively; and 
   the hair roller, in an assembled configuration, is provided with a plurality of cut-out regions from the metallic outer shell thus exposing a combination of an outwardly facing metallic surface defined by the outer shell and an outwardly facing surface including the hook or hair adhesive material of the middle shell.