Flexible grinding product and method of producing the same

Abstract

The present invention relates to a flexible grinding product and a method of producing the same. Such a grinding product comprises a flexible underlay ( 1 ) which consists of two layers laminated to each other. These comprise a lower base layer ( 2 ) and an upper layer ( 3 ), a cavity layer. The underlay includes a top surface ( 5 ) having at least one adhesive layer ( 6 ) arranged thereto after lamination and a layer of grinding agent ( 7 ) applied by means of the adhesive layer. The grinding product is characterized in that the layer that is coated with grinding agent includes holes which form cavities ( 4 ), whereby the cavities provide space for grinding dust and grinding residues and facilitate their re-moval from the surface being ground.

1 . A flexible grinding product comprising a flexible underlay, at least one adhesive layer on one side of the underlay and a layer of grinding agent applied by means of the adhesive layer, 
 the underlay consisting of two layers which are laminated to each other and comprising a lower base layer and an upper layer, which is provided with a top surface,    the top surface comprising grinding agent applied thereto after lamination, whereby    the top surface is provided with holes which form cavities in the top surface so that    the cavities provide space for grinding dust and grinding residues and facilitate their removal from the surface being ground.    
   
   
       2 . A flexible grinding product according to  claim 1 , wherein the upper layer of the underlay coated with grinding agent forms a cavity layer.  
   
   
       3 . A flexible grinding product according to  claim 2 , wherein the cavity layer is perforated.  
   
   
       4 . A flexible grinding product according to  claim 2 , wherein the cavity layer is naturally porous.  
   
   
       5 . A grinding product according to  claim 1 , wherein the lower side of the underlay is provided with a fastening layer.  
   
   
       6 . A flexible grinding product according to  claim 5 , wherein the fastening layer comprises a cloth provided with fastening loops.  
   
   
       7 . A grinding product according to  claim 5 , wherein the fastening layer comprises self-adhesive.  
   
   
       8 . A grinding product according to  claim 1 , wherein the base layer of the underlay is dust permeable.  
   
   
       9 . A flexible grinding product according to  claim 8 , wherein the base layer has a lower surface provided with fastening loops.  
   
   
       10 . A flexible grinding product according to  claim 1 , wherein one or both layers of the underlay include holes formed during the production of the layer.  
   
   
       11 . A flexible grinding product according to  claim 10 , wherein in the both layers provided with holes, the holes are distributed so that they go through the whole underlay.  
   
   
       12 . A flexible grinding product according to  claim 11 , wherein the holes that go through the underlay are distributed substantially evenly over the underlay.  
   
   
       13 . A flexible grinding product according to  claim 11 , wherein the holes are distributed in a recurring pattern over the underlay.  
   
   
       14 . A flexible grinding product according to  claim 11 , wherein the holes that go through the underlay are distributed substantially randomly over the underlay.  
   
   
       15 . A method of producing a flexible grinding product, which comprises a flexible underlay, at least one adhesive layer applied on one side of the underlay and a layer of grinding agent applied by means of the adhesive layer, 
 the lower base layer and the porous upper layer being laminated to each other to form an underlay, after which    a top surface of the upper layer is coated with grinding agent, whereby    cavities are formed in the top surface to provide space for grinding dust and grinding residues and to facilitate their removal from the surface being ground.    
   
   
       16 . A method according to  claim 15 , wherein the upper layer coated with grinding agent in the underlay forms a cavity layer.  
   
   
       17 . A method according to  claim 15 , wherein the porosity of the cavity layer is achieved by perforation.  
   
   
       18 . A method according to  claim 15 , wherein the cavity layer is made of a naturally porous material.  
   
   
       19 . A method according to  claim 15 , wherein the lower surface of the underlay is provided with a fastening layer.  
   
   
       20 . A method according to  15 , wherein the base layer of the underlay is perforated before it is laminated to the upper layer.  
   
   
       21 . A method according to  claim 15 , wherein the base layer of the underlay is formed of a naturally porous material.  
   
   
       22 . A method according to  claim 19 , wherein the porous layers are arranged to each other in lamination so as to form holes that go through the whole underlay.