Closure with three dimensionally shaped sealing means

Abstract

The present invention is directed to a closure with an improve sealing means. The sealing means is three-dimensionally shaped an inserted into a closure shell. The sealing means comprises a sealing disc with a side seal. The sealing disc positively engages with the outer shell of the closure.

1 . A closure cap for sealingly closing of an opening of a neck of a container, the closure cap having
 a. an outer shell with a top deck and a cylindrical side skirt and   b. fastening means to receive a three dimensionally shaped  5  sealing disc inserted inside the closure cap,   c. the sealing disc having a top disc extending along an inner top wall of the top deck across the inside of the closure cap and   d. an annular skirt extending perpendicular from the outer rim of the sealing disc, to sealingly engage with an outer side wall of the neck of the container.   
   
   
       2 . The closure cap according to  claim 1 , wherein the annular skirt of the sealing disc is at its lower free end funnel shaped extending outwardly in the direction of an inner side wall of the outer shell. 
   
   
       3 . The closure cap according to  claim 2 , wherein an inner side wall of the annular skirt of the sealing disc has a first section adjacent to the top disc which is in general cylindrically shaped and a second section spaced apart from the top disc which is funnel shaped extending outwardly in the direction of the side skirt. 
   
   
       4 . The closure cap according to  claim 3 , wherein the sealing disc comprises an undercut in the transition area of the first and the second section. 
   
   
       5 . The closure cap according to  claim 1 , wherein the free end of the sealing disc is in contact with the side wall of the outer shell. 
   
   
       6 . The closure cap according to  claim 1 , wherein the fastening means to receive the sealing disc comprises an annular skirt extending from the inner top wall of the top deck of the closure cap. 
   
   
       7 . The closure cap according to  7 , wherein the annular skirt is spaced apart by a gap from the side skirt of the outer shell. 
   
   
       8 . The closure cap according to one of the  claims 7 , wherein the annular skirt is designed to positively engage with the sealing disc. 
   
   
       9 . The closure cap according to  claim 1 , wherein the outer shell and the sealing disc are designed such that the sealing disc is rotatable with respect to the outer shell when the closure is applied onto a neck. 
   
   
       10 . The closure cap according to  claim 1 , wherein the outer shell of the closure cap comprises a lower part and upper part interconnected by a hinge structure. 
   
   
       11 . The closure cap according to  claim 10 , wherein the lower part comprises holding means to engage with an annular bead of the container and the upper part comprises at least one thread segment to engage with a corresponding thread segment arranged at the neck finish. 
   
   
       12 . A sealing disc for a closure cap with a three-dimensionally shaped design comprising a top disc and at least one skirt protruding perpendicularly from the top disc, the sealing disc comprising holding means to positively engage in a mounted position with an outer shell of the closure cap. 
   
   
       13 . The sealing disc according to  claim 12 , wherein the at least one skirt is arranged out the outer rim of the top disc having a first section which is in general cylindrical and a second section which is in general funnel shaped. 
   
   
       14 . The sealing disc according to  claim 13 , wherein the at least one skirt comprises an undercut in the transition area between the first and the second section. 
   
   
       15 . An outer shell for a closure cap comprising a top deck and a side skirt extending perpendicularly from the top deck, the outer shell comprising holding means suitable to positively engage with corresponding holding of a three dimensionally shaped sealing disc. 
   
   
       16 . The outer shell according to  claim 15 , wherein the outer shell comprising an annular skirt extending perpendicular form the top deck spaced a part by a gap from the side skirt and being designed to positively engage with a sealing disc in a mounted position. 
   
   
       17 . The closure cap according to  claim 2 , wherein the free end of the sealing disc is in contact with the side wall of the outer shell.