Reservoir cap

Abstract

A reservoir cap (1) is for coupling to a neck (4A) of a container (4) at its opening (5). A body (3) has a cup-shaped portion (9) closed at its bottom by a breakable wall (31) The cap has a cutter (2) with a head (20) having a cylindrical surface (21) that with the cup-shaped portion (9) forms a reservoir (S) for product (10), The cutter (2) when pushed with force against the breakable wall (31) at least partially separates the breakable wall from the cup-shaped portion (9) which causes product to fall into the container (4)An elongated element (50) made of a thermoplastic material that absorbs moisture protrudes from the head (20) of the cutter (2), the elongated element forming a hollow space between its surface and that part of the cylindrical surface (21) facing the elongated element (50).

1 . A reservoir cap ( 1 ) configured to be coupled to a neck ( 4 A) of a container ( 4 ) at its opening ( 5 ), comprising a body ( 3 ) having a cup-shaped portion ( 9 ) closed at its bottom by a breakable wall ( 31 ), the body ( 3 ) comprising at least one sealing element ( 32 ) with said neck ( 4 A), the cap also comprising a cutter ( 2 ) provided with a head ( 20 ) from which extends a cylindrical surface ( 21 ) which is internally hollow that, when coupled to the cup-shaped portion, forms together with at least a part of the cup-shaped portion ( 9 ) a reservoir (S) for said product ( 10 ), the cutter sliding in a sealed manner inside the cup-shaped portion ( 9 ) and comprising a cutting surface ( 24 ) of the breakable wall ( 31 ) formed at a free end ( 22 ) of the cylindrical surface, the cup-shaped portion ( 9 ) being configured so that, when the cap is placed on the container ( 4 ) and the product is in the reservoir (S), the cutter ( 2 ), pushed with force against the breakable wall ( 31 ), at least partially separates the breakable wall ( 31 ) from the cup-shaped portion ( 9 ) which causes the introduction of said product by falling into the container ( 4 ), characterized in that at least a part of the outer surface of the cutter ( 2 ) is made of said thermoplastic material that absorbs moisture. 
     
     
         2 . Reservoir cap according to  claim 1 , wherein at least a part of the free end ( 22 ) of the cutter ( 2 ) is made of a thermoplastic material that absorbs moisture. 
     
     
         3 . Reservoir cap according to  claim 1 , wherein the cutter ( 2 ) is entirely made of said thermoplastic material that absorbs moisture. 
     
     
         4 . Reservoir cap according to  claim 1 , wherein, from the head ( 20 ) of the cutter ( 2 ), internally to the cylindrical surface ( 21 ), protrudes an elongated element ( 50 ) made of a thermoplastic material that absorbs moisture, the elongated element being configured so as to form a hollow space (I) between its surface and that part of the cylindrical surface ( 21 ) facing the elongated element ( 50 ). 
     
     
         5 . Reservoir cap according to  claim 1  wherein the elongated element ( 50 ) has tapered shape. 
     
     
         6 . Reservoir cap according to  claim 1  wherein the elongated element ( 50 ) has a conical or frustro-conical shape. 
     
     
         7 . Reservoir cap according to  claim 5 , wherein the elongated element ( 50 ) has pyramid shape or a truncated pyramid shape, with polygonal base. 
     
     
         8 . Reservoir cap according to  claim 1 , wherein the cutter ( 2 ) and the elongated element ( 50 ) are made in one piece. 
     
     
         9 . Reservoir cap according to  claim 1 , wherein the free end ( 22 ) of the cutter ( 2 ) lies in a plane angled relative to a longitudinal axis (A) of the cutter, and/or wherein at a smaller height position of the cylindrical surface ( 21 ) there is a notch ( 60 ) adapted to prevent a complete rupture of said breakable wall ( 31 ). 
     
     
         10 . Reservoir cap according to  claim 1 , wherein a screw mounted lid ( 40 ) is present, sealing means ( 70 ) being provided between the body and the lid adapted to prevent an air leakage between the body and the lid.