Closure for a container

Abstract

A closure ( 1 ) for a container ( 2 ) which comprises a cap, the cap being adapted in use to sealably engage the opening of a container, the cap having a frangible portion ( 3 ) adapted in use to be connected through a tearing strip ( 4 ) to the container to prevent disengagement of the cap from the opening of the container and the frangible portion being removable from the cap by pulling on the tearing strip, thereby in use, allowing the cap to be disengaged from sealable engagement with the opening of the container.

1 . A closure associated with a container which comprises a cap being adapted in use to sealably engage the opening of a container, the cap having a frangible portion connected through a tearing strip to the container to prevent disengagement of the cap from the opening of the container and the frangible portion being removable from the cap by pulling on the tearing strip, thereby in use, allowing the cap to be disengaged from sealable engagement with the opening of the container.  
   
   
       2 . A closure as claimed in  claim 1  in which the cap has a screw thread which in use, co-operates with a corresponding screw thread on an outlet neck of the container.  
   
   
       3 . A closure as claimed in  claim 1  in which the cap is manufactured of one or more plastics materials.  
   
   
       4 . A closure as claimed in  claim 3  in which the one or more plastics materials comprise a thermoplastic polymer.  
   
   
       5 . A closure as claimed in  claim 3  in which the cap is manufactured using injection molding or compression molding.  
   
   
       6 . A closure as claimed in  claim 1  in which the cap is hexagonal in shape.  
   
   
       7 . A closure as claimed in  claim 1  or  claim 5  in which the frangible portion is manufactured integral with the cap.  
   
   
       8 . A closure as claimed in  claim 1  in which the cap has a continuous thin portion of material which his broken when the frangible portion is removed form the cap.  
   
   
       9 . A closure as claimed in  claim 1  in which the frangible portion of the cap comprises a composite material.  
   
   
       10 . A closure as claimed in  claim 1  in which the frangible portion has a key shape.  
   
   
       11 . A closure as claimed in  claim 1  in which the tearing strip is integral with the frangible portion of the cap.  
   
   
       12 . A closure as claimed in  claim 1  in which the tearing strip comprises one or more wires.  
   
   
       13 . A closure as claimed in  claim 12  in which the one or more wires of the tearing strip are connected to a connecting pad, which is connected to the container.  
   
   
       14 . A closure as claimed in  claim 1  in which the tearing strip is connected to the container by heat sealing, ultra sound sealing or friction sealing.  
   
   
       15 . A closure as claimed in  claim 13  in which the connecting pad is connected to the container by heat sealing, ultra sound sealing or friction sealing.  
   
   
       16 . A closure as claimed in  claim 1  associated with a container wherein the container contains liquids such as lubricating oils.  
   
   
       17 . A closure as claimed in  claim 1  associated with a container wherein the container contains liquids such as fuel additives, anti-freeze compositions, brake fluids and the like.  
   
   
       18 . A closure as claimed in  claim 3  in which the thermoplastic polymer comprises polypropylene homopolymer and/or copolymer.