Induction seal disk

Abstract

An induction seal disc for a closure ( 4 ) of a bottle for storing medicaments comprises an elastic pressure inlay ( 9 ) and an, in particular, metallic sealing foil ( 8 ). Between the pressure inlay ( 9 ) and the sealing foil ( 8 ) is disposed a film ( 10 ) having low permeability.

1 . Induction seal disc for a closure ( 4 ) of a bottle for storing medicaments, comprising an elastic pressure inlay ( 9 ) and a metallic sealing foil ( 8 ), characterised in that between the pressure inlay ( 9 ) and the sealing foil ( 8 ) is arranged a low permeability film ( 10 ). 
     
     
         2 . Induction seal disc according to  claim 1 , characterised in that the film ( 10 ) is adhesively bonded to the pressure inlay ( 9 ) embodied as a cardboard inlay ( 6 ) and an adhesive layer is applied between the film ( 10 ) and the sealing foil ( 8 ). 
     
     
         3 . Induction seal disc according to  claim 1 , characterised in that the sealing foil ( 8 ) and the film ( 10 ) are made of aluminium. 
     
     
         4 . Induction seal disc according to  claim 1 , characterised in that the surface of the cardboard inlay ( 6 ), the film ( 10 ) and the sealing foil ( 8 ) are all the same size. 
     
     
         5 . Induction seal disc according to  claim 1 , characterised in that between the film ( 10 ) and the sealing foil ( 8 ) is provided an adhesive layer, the area of which is less than the area of the sealing foil ( 8 ), wherein the adhesive layer does not extend to the edge of the sealing foil ( 8 ). 
     
     
         6 . Induction seal disc according to  claim 1 , characterised in that the adhesive layer consists of a wax ( 7 ) with a low permeability. 
     
     
         7 . Induction seal disc according to  claim 1 , characterised in that the sealing foil ( 8 ) or the closure ( 4 ) is of such dimensions that the sealing foil ( 8 ) is held in the closure ( 4 ), in the unsealed state. 
     
     
         8 . Induction seal disc according to  claim 1 , characterised in that the film ( 10 ) and/or the sealing foil ( 8 ) is or are coated with a lacquer or a plastic selected from polyolefin, polyethylene, polypropylene, ethylenevinyl alcohol, ethylenevinyl acetate, or a barrier foil selected from cycloolefin copolymer, highly crystalline polyvinylidene chloride, polychlorotrifluoroethylene. 
     
     
         9 . Induction seal disc according to  claim 8 , characterised in that the coating comprises a sorbent which is suitable in particular for absorbing water, gases and/or flavours. 
     
     
         10 . Closure for a bottle for storing medicaments, having an induction seal disc ( 5 ) according to  claim 1 . 
     
     
         11 . Closure according to  claim 10 , characterised in that the closure ( 4 ) is embodied as a screw closure. 
     
     
         12 . Plastic bottle having a closure ( 4 ) according to  claim 10 . 
     
     
         13 . Plastic bottle according to  claim 11 , characterised in that a sealing surface is formed at the free end of the bottle neck ( 2 ). 
     
     
         14 . Plastic bottle according to  claim 11 , characterised in that the plastic bottle ( 1 ) is filled with a pharmaceutical active substance formulation in the form of plain or coated tablets or filled capsules.