Metallic cap closure having water repelling properties and method of fabricating the same

Abstract

A metallic closure having water repelling properties, and methods of manufacturing the same, includes a metallic closure shell, as for example, the type used for crown caps or roll-on caps, and a non-wetting material layer deposited on at least a portion of an inside surface of the closure such that, when the closure is disposed over the rim and opening of a container, the opening is hermetically sealed and moisture is repelled from confined regions between an inside surface of the shell and an outside surface of the container.

1 . A water repelling cap for a container having an opening with a rim, said cap comprising: 
 a closure shell; and    a non-wetting material layer deposited over at least a portion of an inside surface of said closure shell.    
   
   
       2 . The water repelling cap of  claim 1 , wherein said portion comprises an area between an edge of said cap and a region of said inner surface in a sealing contact with said opening.  
   
   
       3 . The water repelling cap of  claim 1 , wherein said non-wetting material layer comprises at least one of a polyvinyl chloride, a polyester, a poliketone, an epoxy, a phenolic, and a poliacrilic.  
   
   
       4 . The water repelling cap of  claim 3 , wherein a composition of said non-wetting material layer further comprises Zonyl.  
   
   
       5 . The water repelling cap of  claim 4 , wherein a Zonyl concentration in said composition has a dry weight ratio ranging from approximately 1 to approximately 10%.  
   
   
       6 . The water repelling cap of  claim 5 , wherein said dried concentration is preferably about 4%.  
   
   
       7 . The water repelling cap of  claim 3 , wherein said non-wetting material layer is a PVC-free lacquer.  
   
   
       8 . The water repelling cap of  claim 7 , wherein said non-wetting material layer comprises at least one of a polyester and an epoxy-phenolic resin.  
   
   
       9 . The water repelling cap of  claim 8 , wherein a composition of said non-wetting material layer further comprises Teflon.  
   
   
       10 . The water repelling cap of  claim 9 , wherein a Teflon concentration in said composition has a dry weight ratio ranging from approximately 1 to approximately 10%.  
   
   
       11 . The water repelling cap of  claim 10 , wherein said dried concentration is preferably about 7%.  
   
   
       12 . The water repelling cap of  claim 1 , wherein said closure shell is one of a crown cap, and a roll-on cap.  
   
   
       13 . A method for manufacturing a water repelling cap, comprising: 
 providing a metallic sheet having a top surface and a bottom surface;    applying a non-wetting material layer to one of said surfaces; and    forming said cap from said metallic sheet.    
   
   
       14 . The method of  claim 13 , further comprising applying a coat of varnish to said metallic sheet and curing said coat of varnish before applying said non-wetting material layer.  
   
   
       15 . The method of  claim 14 , further comprising transferring an ink to said metallic sheet, so as to imprint thereon at least one of a brand logo, a producer logo, and a promotional message, and curing said ink before applying said material layer.  
   
   
       16 . The method of  claim 13 , wherein said non-wetting material layer comprises at least one of a polyvinyl chloride, a polyester, a poliketone, an epoxy, a phenolic, and a poliacrilic.  
   
   
       17 . The method of  claim 16 , wherein a composition of said non-wetting material layer further comprises Zonyl.  
   
   
       18 . The method of  claim 17 , wherein a Zonyl concentration in said composition has a dry weight ratio ranging from approximately 1 to approximately 10%.  
   
   
       19 . The method of  claim 18 , wherein said dried concentration is preferably about 4%.  
   
   
       20 . The method of  claim 13 , wherein said non-wetting material layer is a PVC-free lacquer.  
   
   
       21 . The method of  claim 20 , wherein said non-wetting material layer comprises at least one of a polyester and an epoxi-phenolic resin.  
   
   
       22 . The method of  claim 21 , wherein a composition of said non-wetting material layer further comprises Teflon.  
   
   
       23 . The method of  claim 22 , wherein a Zonyl concentration in said composition has a dry weight ratio ranging from approximately 1 to approximately 10%.  
   
   
       24 . The method of  claim 23 , wherein said dried concentration is preferably about 7%.  
   
   
       25 . A method for manufacturing a water repelling cap, comprising: 
 providing a metallic sheet;    forming at least one cap from said metallic sheet; and    applying a non-wetting material layer to at least a portion of an inner surface of said cap.    
   
   
       26 . The method of  claim 25 , wherein said applying comprises applying said non-wetting material layer to an area between an edge of said cap and a region of said inner surface in a sealing contact with said opening.  
   
   
       27 . A method for manufacturing a water repelling cap, comprising: 
 providing a roll-on metallic cap; and    applying a non-wetting material layer to at least a portion of an inner surface of said cap.    
   
   
       28 . A water repelling cap for a container having an opening with a rim, said cap comprising: 
 a closure cap; and    non-wetting means for repelling moisture from confined regions between an inside surface of said cap and an outside surface of said container.    
   
   
       29 . The water repelling cap of  claim 28 , wherein said non-wetting means is disposed substantially on an area between an edge of said cap and a region of an inner surface of said container in sealing contact with said opening.  
   
   
       30 . The water repelling cap of  claim 28 , wherein said cap is a linerless cap.  
   
   
       31 . The water repelling cap of  claim 28 , wherein said cap is one of a crown cap and a roll-on cap.