Apparatus for shaping hair

Abstract

Apparatus (1) for shaping hair, comprising:two arms (3, 4) that are able to move with respect to one another and are able to assume a spaced-apart configuration for introducing a lock of hair between them and a moved-together configuration for treating the lock of hair, the arms (3, 4) being movable along the lock in this moved-together configuration,two contact surfaces (5, 6) borne by the two arms (3, 4), respectively, arranged facing one another, at least one of the contact surfaces (5, 6) being a heating surface,at least one strip (12, 12a, 12b, 12c, 12d) made of a friction material comprising a silicone elastomer, a fluoroelastomer or a perfluoroelastomer, and attached to each of the contact surfaces (5, 6) so as to protrude from the contact surface (5; 6) to which it is attached by a height (H) that is strictly greater than 0 mm even in the moved-together configuration of the arms (3, 4) and smaller than 2 mm.

1 . An apparatus for shaping hair, comprising:
 two arms that are able to move with respect to one another and are able to assume a spaced-apart configuration for introducing a lock of hair between them and a moved-together configuration for treating the lock of hair, the arms being movable along the lock in this moved-together configuration,   two contact surfaces borne by the two arms, respectively, arranged facing one another, at least one of the contact surfaces being a heating surface,   at least one strip made of a friction material comprising a silicone elastomer, a fluoroelastomer or a perfluoroelastomer, and attached to each of the contact surfaces so as to protrude from the contact surface to which it is attached by a height (H) that is strictly greater than 0 mm even in the moved-together configuration of the arms and smaller than 2 mm,   one of the contact surfaces comprising a single strip and the other of the contact surfaces comprising two strips that are arranged so as to flank the single strip in the moved-together configuration of the arms.   
     
     
         2 . The apparatus according to  claim 1 , the height (H) by which said at least one strip protrudes being between 0.5 and 2 mm. 
     
     
         3 . The apparatus according to  claim 1 , the silicone elastomer being chosen from among vinyl methyl silicone (VMQ), poly vinyl methyl silicone (PVMQ), fluoro vinyl methyl silicone (FVMQ) and methyl silicone (MQ). 
     
     
         4 . The apparatus according to  claim 1 , wherein the width of said at least one strip is between 0.5 mm and 10 mm. 
     
     
         5 . The apparatus according to  claim 4 , wherein the width of said at least one strip is between 1 and 2 mm. 
     
     
         6 . The apparatus according to  claim 1 , wherein said friction material has a Shore A hardness of between 40 and 90 Shore A. 
     
     
         7 . The apparatus according to  claim 1 , wherein said at least one strip has a friction surface of rectilinear longitudinal axis extending longitudinally along an axis parallel to a longitudinal axis of the contact surface to which it is attached. 
     
     
         8 . The apparatus according to  claim 1 , wherein the friction surface of said at least one strip covers an area smaller than 50% of the surface area of the contact surface to which it is attached. 
     
     
         9 . The apparatus according to  claim 1 , wherein the single strip is arranged equidistantly from the lateral edges of the contact surface to which it is attached, and the two strips are respectively attached with the same distance from the lateral edges of the contact surface to which they are attached. 
     
     
         10 . The apparatus according to  claim 1 , wherein said at least one strip has a substantially trapezoidal cross section, with a width of the friction surface of said at least one strip intended to come into contact with the lock of hair that is smaller than the width of the surface opposite thereto. 
     
     
         11 . The apparatus according to  claim 10 , wherein the edges of said at least one strip each form, with the friction surface, an angle of between 5° and 30°. 
     
     
         12 . The apparatus according to  claim 1 , wherein each contact surface comprises at least one groove for accommodating said at least one strip. 
     
     
         13 . A process for treating hair implementing the apparatus according to  claim 1 , comprising the steps of:
 introducing a lock of hair between the arms in the spaced-apart configuration thereof,   applying a closing force to the arms so that they transition to the moved-together configuration while pinching the lock of hair and exerting a clamping force, and then   moving the apparatus relative to the lock of hair.