Wiper for a liquid or pasty product applicator

Abstract

A wiper for an applicator of a liquid or pasty product, including an attaching part configured to attach the wiper to the opening of a container able to contain the product, and a tubular wiping sleeve connected to the attaching part, in which the wiping sleeve is more flexible than the attaching part, and the end of the wiping sleeve opposite the attaching part forms an annular lip, the lip defining an orifice chamfered with respect to a direction of withdrawal (X) of the applicator through the wiper.

1 . A wiper for an applicator of a liquid or pasty product, comprising an attaching part configured to attach the wiper to an opening of a container able to contain said product, and a tubular wiping sleeve connected to the attaching part, in which the wiping sleeve is more flexible than the attaching part, and an end of the wiping sleeve opposite the attaching part forms an annular lip, the lip defining an orifice chamfered with respect to a direction of withdrawal of the applicator through the wiper. 
     
     
         2 . The wiper as claimed in  claim 1 , wherein the wiping sleeve comprises a frustoconical part tapering towards the lip, the lip being defined by the an end of the frustoconical part. 
     
     
         3 . The wiper as claimed in  claim 1 , wherein the wiping sleeve comprises a wall adjacent to the lip, a thickness of the wall being less than 0.7 mm. 
     
     
         4 . The wiper as claimed in  claim 1 , wherein the wiping sleeve comprises a wall adjacent to the lip said wall having a hardness between 30 and 60 Shore A. 
     
     
         5 . The wiper as claimed in  claim 1 , wherein the lip defines, in cross-section, a convex orifice. 
     
     
         6 . The wiper as claimed in  claim 1 , wherein the lip is contained in a plane forming an angle between 10° and 80° with the direction of withdrawal. 
     
     
         7 . The wiper as claimed in  claim 1 , wherein the attaching part is made of a first material and the wiping sleeve is made of a second material having a lesser hardness than that of the first material. 
     
     
         8 . The wiper as claimed in  claim 2 , wherein the greatest length of the frustoconical part of the wiping sleeve in the direction of withdrawal is greater than the widest inner radius of the wiping sleeve transversely to said direction. 
     
     
         9 . The wiper as claimed in  claim 1 , wherein the orifice defined by the lip has a diameter between 2 and 8 millimeters. 
     
     
         10 . An assembly for applying a liquid or pasty product comprising a container having an opening, an applicator having a stem provided with an applying member and a wiper as claimed in  claim 1 , attached to the opening of the container. 
     
     
         11 . The applying assembly as claimed in  claim 10 , wherein the smallest inner diameter of the wiping sleeve transverse to the direction of withdrawal is less than a diameter of a cross-section of the stem. 
     
     
         12 . The applying assembly as claimed in  claim 10 , wherein the applying member is off-center with respect to an axis of the stem, or the orifice is off-center with respect to the direction of withdrawal. 
     
     
         13 . The wiper as claimed in  claim 3 , wherein the thickness of the wall is between 0.3 and 0.5 mm. 
     
     
         14 . The applying assembly as claimed in  claim 10 , wherein the applying member has a concave part in its cross-section.