BOTTLE CAP WITH A CHAMBER FOR RAW MATERIAL AND PRESSURE GAS

摘要

The Bottle cap 1 relating is provided with a fixed portion 2 and a movable portion 3 which are separably screwed with each other. The fixed portion is for supporting the movable portion and has an attaching portion 2a to an opening 11a of a bottle 11 and a through hole 2b on an axial line X. The movable portion has an inner plug portion 4 which protrudes from a face 3a thereof on the axial line and passes through the through hole. The inner plug portion is provided with a chamber 5 for raw material 12 and pressure gas 13. An opening plane 5a at the other end of the chamber is sealed by a plug 6 . Between the plug and the fixed portion, there exists a plug opening means 7 and the plug is to be opened by the plug opening means during relative movements of the fixed portion and the movable portion.