Abstract: A dispenser closure (A) for a container including a storage chamber (2), a flexible diaphragm (3) and a membrane opening device (6) attached to the flexible diaphragm (3), whereby the membrane opening device (6) includes a support structure (7) in the form of an open structure with cutting teeth (11) in which a substance, additive, ingredient or powder to be dispensed may flow and out through the opened membrane. The open support structure results in mixing to occur immediately when the membrane is open, enables free movement of the substance, and facilitates complete mixing as there are fewer surfaces to trap the substance. Upon depression of the flexible diaphragm, the cutting teeth (11) of the opening device (6) moves to cut the membrane (5) thereby opening the storage chamber to allow the substance to mix with water, a solution or a sports drink contained in an attached container or bottle.

Abstract: A dispenser comprises a container having a first aperture therein and a first closure element for sealingly closing the first aperture wherein the container has a second aperture and a second closure element for closing said second aperture, the second closure element including a pressing element operable to press inwardly towards the second aperture, a blister pack, locating element locating the blister pack to span across the second aperture and sealing element sufficient to ensure the second aperture is sealingly closable against leakage of the intended contents of the dispenser. The construction and arrangement is such that in end use the container holds a first substance and the blister pack holds a second substance and when the pressing element is pushed the blister pack is ruptured enabling the mixing of the contents thereof with those of the container.

Abstract: A dispenser closure (A) for a container including a storage chamber (2), a flexible diaphragm (3) and a membrane opening device (6) attached to the flexible diaphragm (3), whereby the membrane opening device (6) includes a support structure (7) in the form of an open structure with cutting teeth (11) in which a substance, additive, ingredient or powder to be dispensed may flow and out through the opened membrane. The open support structure results in mixing to occur immediately when the membrane is open, enables free movement of the substance, and facilitates complete mixing as there are fewer surfaces to trap the substance. Upon depression of the flexible diaphragm, the cutting teeth (11) of the opening device (6) moves to cut the membrane (5) thereby opening the storage chamber to allow the substance to mix with water, a solution or a sports drink contained in an attached container or bottle.