Reservoir With a Cutter for Substances to be Mixed With Liquids at Moment of Use in Particular for Single-Dose Containers

Abstract

The reservoir with a cutter for substances to be mixed with liquids at moment of use, in particular for single-dose containers, is of a type comprising a breakable bottom ( 8 a ) connected to a reservoir by means of an easy-break line ( 8 b ) and superiorly closed by a cutter ( 9 ) which on command causes breakage of the easy-break line ( 8 b ). The reservoir comprises a barrier element ( 6 ), which is easily removable or cuttable or penetrable by action of the cutter ( 9 ) and which is impermeable to humidity. The barrier element ( 6 ) is connected to the reservoir in a position between an inside of the container and the substance contained in the reservoir, and intercepts any humidity migrating from inside the container to inside the reservoir across the breakable line ( 8 b ).

1 ). A reservoir with a cutter for substances to be mixed with liquids at moment of use, in particular for single-dose containers, of a type comprising a breakable bottom ( 8   a ) connected to a reservoir by means of an easy-break line ( 8   b ) and superiorly closed by a cutter ( 9 ) which on command causes breakage of the easy-break line ( 8   b ), wherein the reservoir comprises a barrier element ( 6 ), which is easily removable or cuttable or penetrable by action of the cutter ( 9 ) and which is impermeable to humidity, connected to the reservoir in a position between a substance contained in the reservoir and the outside environment, such as to intercept any humidity migrating from inside the container to inside the reservoir across the breakable line ( 8   b ). 
   
   
       2 ). The reservoir of  claim 1 , wherein the barrier element is connected externally to a bottom zone of the reservoir ( 8 ). 
   
   
       3 ). The reservoir of  claim 2 , wherein: it comprises a closed-perimeter projection ( 5 ), made in an external zone of the bottom of the reservoir, which completely surrounds the easy-break line ( 8   b ); the barrier comprises a thin sheet ( 6 ) of multi-layer material, of known type, comprising at least a metal layer and a layer of plastic material; the sheet ( 6 ) being heat-weldable to the projection ( 5 ). 
   
   
       4 ). The reservoir of  claim 3 , wherein the sheet ( 6 ) comprises a layer of aluminium and a layer of polyethylene. 
   
   
       5 ). The reservoir of  claim 3 , wherein the projection ( 5 ) has an annular shape and is made at a lower peripheral edge of the reservoir. 
   
   
       6 ). The reservoir of  claim 5 , wherein the projection ( 5 ) is made in a single piece with the reservoir during a forming operation thereof, and defines a flat surface at an edge of which the sheet ( 6 ) is heat-welded. 
   
   
       7 ). The reservoir of  claim 6 , wherein it comprises one or more connection points ( 5 a) arranged internally of the perimeter of the projection ( 5 ), projecting externally of the bottom ( 8   a ) of the reservoir in such a way that a terminal part thereof is coplanar to the flat surface defined by the projection ( 5 ).