BOTTLE CAP WITH EXTRA STORAGE SPACE

摘要

PURPOSE: A bottle cap with an extra storage space is provided to store a different substance therein and thus, to more effectively manage changes in the content of the bottle caused by a chemical reaction of the content and the substance in the space. CONSTITUTION: The bottle cap(1) with an extra storage space(104) includes a fixed part(200) fixed on the bottle neck(BN) of the bottle(B), and a moving part(100) for storing a substance. The fixed part(200) has a sealed part(201) supported by at least one supporter(202). On the side of the supporter(202) is a falling space(203) through which the substance in the storage space(104) falls down to the bottle. The moving part(200) has an upper surface(101) and a side surface(102), and a tube(103) having the storage space(104) is formed longitudinally below the upper surface(102). The tube(103) has at least one long projection(108) on the inside wall of the tube(103).