Cap for an aerosol container or a spray container
A spray cap, also known as an actuator overcap for an aerosol container, has an acoustic seal between the actuator button and the overcap. This acoustic seal is formed by a set of matching sealing lips on the actuator button and also on the overcap, such that they are both oriented horizontally. At rest, the sealing lip of the actuator button rests above the sealing lip of the overcap, but during actuation, the sealing lip of the actuator button deforms the sealing lip of the overcap, which both forms an acoustic seal during actuation and creates the force to return the sealing lip of the actuator button back to its original position after actuation is complete.
1. A cap ( 7 ) with a button ( 6 ) for actuating a valve of a container ( 1 ), in particular of an aerosol container or spray container, the button ( 6 ) being pivotable about a hinge ( 5 ) and being intended to act against a stem ( 11 ) of the container ( 1 ) via an angled spray channel ( 10 ) in order to deflect the stem ( 11 ) upon manual actuation of the button ( 6 ) and in order therefore to open the valve, as a result of which a product contained in the container ( 1 ) can move out through the stem ( 11 ) and through a product dispensing opening ( 3 ) provided on the cap ( 7 ), in so doing passing through the spray channel ( 10 ), a sound-limiting seal ( 49 ) between the button ( 6 ) and the cap ( 7 ) is formed by a sealing lip ( 8 ) at the edge of the cap ( 7 ) and by a further sealing lip ( 9 ) at the edge of the button ( 6 ), wherein the sealing lips ( 8 , 9 ) are oriented horizontally, and the sealing lip ( 9 ) of the button ( 6 ) lies on the sealing lip ( 8 ) of the cap ( 7 ) when the button ( 6 ) is not actuated, wherein applying an actuating force on the button ( 6 ) presses the sealing lip ( 9 ) of the button ( 6 ) against the sealing lip ( 8 ) of the cap ( 7 ) causing a slight deforming and generating a return spring force, which return spring force acts to return the button ( 6 ) to a pre-actuation position when the actuating force is removed.
2. The cap as claimed in claim 1 , wherein the width (b, d) of at least one of the two sealing lips ( 8 , 9 ) increases the farther away the corresponding area of the sealing lip ( 8 , 9 ) is from the hinge ( 5 ).
3. The cap as claimed in claim 1 , wherein the material thickness (s) of at least one of the two sealing lips ( 8 , 9 ) decreases the farther away the corresponding area of the sealing lip ( 8 , 9 ) is from the hinge ( 5 ).
4. The cap as claimed in claim 1 , wherein the button ( 6 ) is round, preferably circular or oval, and the seal ( 49 ) runs annularly around the button ( 6 ).