Polishing product element, particularly for finishing optical lenses

Abstract

A polishing element of the pad type for finishing mineral or organic optical lenses. The polishing element includes a base plate on which fibers are deposited by flocking them onto the surface of the aforesaid base plate in orthogonal fashion, with the aforesaid fibers consisting of viscose and/or polyamide fibers that are affixed onto the base plate by means of an adhesive. The adhesive is based on polyurethane.

1 . A polishing element of the pad type for finishing mineral or organic optical lenses, to be mounted on a turning support, comprised of a base plate on which fibers are deposited by flocking the fibers in orthogonal fashion onto the surface of the aforesaid base plate, the aforesaid fibers consisting of polyamide and/or viscose fibers attached to the base plate by means of an adhesive, wherein the adhesive is based on polyurethane.  
   
   
       2 . A polishing element according to  claim 1 , wherein the base plate consists of a cotton fabric.  
   
   
       3 . A polishing element according to  claim 1 , wherein the base plate consists of a polyurethane foam, with the polishing element being capable of being affixed directly onto the hard and smooth surface of the aforesaid turning support by means of an adhesive.  
   
   
       4 . A polishing element according to  claim 1 , wherein the fibers have a trefoil cross section and a length between 0.3 mm and 1.0 mm, preferably 0.5 mm.  
   
   
       5 . A polishing element according to  claim 1 , wherein the diameter of the fibers lies between 5 μm and 25 μm, preferably between 15 μm and 20 μm.  
   
   
       6 . A polishing element according to  claim 1 , wherein the base plate has a surface density between 200 g/m 2  and 400 g/m 2 , preferably 300 g/m 2 .  
   
   
       7 . A polishing element according  claim 1 , wherein the polyurethane based adhesive has a surface density of 80 g/m 2 .  
   
   
       8 . A polishing element according to  claim 1 , wherein the element is in the form of a disc having a thickness between 0.50 and 5 mm.  
   
   
       9 . A polishing element according to  claim 1 , wherein the element is in the form of a disc with or without petals, with or without a center hole.