Container closure and container

Abstract

The invention relates to a container and to a container closure (100). The container closure (100) comprises a main body (1) for fastening to a container, and a metering unit (2) for the metered dispensing of a liquid. The metering unit (2) has a metering body (4) comprising a discharge opening (21), and has a channel (22) adjoining the discharge opening (21). The channel (22) extends in the direction of the container and forms, together with the metering unit (2), an annular groove (23). A metering cap (3) is arranged on the metering unit (2). A metering cap (3) closes the annular groove (23) to form an annular volume (V). The annular volume (V) is connected to a buffer volume (27) by a first opening (24) and to the channel (22) by a second opening (25). The first opening (24) and the second opening are arranged such that any liquid that flows from the first opening (24) to the second opening (25) passes through the annular volume (V), at least along a portion of the annular volume (V), in a direction around the channel (22).

16 . A container closure ( 100 ) comprising:
 a main body ( 1 ) for fastening to a container,   a metering unit ( 2 ) for the metered dispensing of a liquid, wherein   the metering unit ( 2 ) has a metering body ( 4 ) having a discharge opening ( 21 ) and a channel ( 22 ) which adjoins the discharge opening ( 21 ) and extends in the direction of the container and forms an annular channel ( 23 ) with the metering unit ( 2 ), wherein   a metering cap ( 3 ) is arranged on the metering body ( 4 ), wherein   the metering cap ( 3 ) closes the annular channel ( 23 ) to form an annular volume (V), wherein the annular volume (V) is connected by a first opening ( 24 ) to a buffer volume ( 27 ) and by a second opening ( 25 ) to the channel ( 22 ), wherein the first opening ( 24 ) and the second opening ( 25 ) are arranged such that all liquid which flows from the first opening ( 24 ) to the second opening ( 25 ) passes through the annular volume (V) at least along a portion of the annular volume (V) in a direction around the channel ( 22 ), in particular in a spiral shape.   
     
     
         17 . The container closure ( 100 ) according to  claim 16 , wherein the buffer volume ( 27 ) is separated from the container interior ( 201 ) by the metering cap ( 3 ). 
     
     
         18 . The container closure ( 100 ) according to  claim 16 , wherein at least one third opening ( 36 ) is arranged in the metering cap ( 3 ) for connecting the buffer volume ( 27 ) to the container interior ( 201 ). 
     
     
         19 . The container closure ( 100 ) according to  claim 16 , wherein one or more partitions ( 26 ) are arranged in the annular volume (V) for preventing a direct connection between the first opening ( 24 ) and the second opening ( 25 ). 
     
     
         20 . The container closure ( 100 ) according to  claim 16 , wherein the first opening ( 24 ) is arranged at a distance from the second opening ( 25 ) in an axial direction of the channel ( 22 ). 
     
     
         21 . The container closure ( 100 ) according to  claim 16 , wherein the second opening ( 25 ) is formed inside the channel ( 22 ). 
     
     
         22 . The container closure ( 100 ) according to  claim 16 , wherein the first opening ( 24 ) is formed inside the metering body ( 4 ). 
     
     
         23 . The container closure ( 100 ) according to  claim 16 , wherein the metering body ( 4 ) has a wall ( 41 ) to form the annular groove ( 23 ). 
     
     
         24 . The container closure ( 100 ) according to  claim 16 , wherein the metering cap ( 3 ) has a projection ( 37 ) for engaging in a corresponding depression on the metering unit ( 2 ). 
     
     
         25 . The container closure ( 100 ) according to  claim 16 , comprising a closure cap ( 5 ) which is connected in an articulated manner to the main body ( 1 ) and has a closure pin ( 51 ) for closing the discharge opening ( 21 ). 
     
     
         26 . The container closure ( 100 ) according to  claim 16 , wherein the main body ( 1 ) and the metering body ( 4 ) are formed in one piece. 
     
     
         27 . The container closure ( 100 ) according to  claim 16 , wherein the cross-section of the second opening ( 25 ) is less than 50%, in particular less than 40%, preferably less than 30%, of the cross-section of the channel ( 22 ). 
     
     
         28 . The container closure ( 100 ) according to  claim 16 , wherein the container closure ( 100 ) is free of movable or flexible sealing elements. 
     
     
         29 . A container comprising a container closure ( 100 ) according to  claim 16 . 
     
     
         30 . The container according to  claim 29 , wherein the container is flexible.