BOTTLE STOPPER FITTED TO THE MOUTH OF A BOTTLE TO KEEP RESIDUE IN THE BOTTLE

摘要

A bottle stopper of the present invention has a sealing part and a circumferential part. The sealing part is inserted into the mouth of a bottle to seal the mouth, and the circumferential part extends downwardly from the upper soft portion of the sealing part to cover the outer surface of the mouth. The above-described bottle stopper is suitable for use in a bottle in which the cap closure placed in the product when sold is removed by opening the bottle and residue still remains in the bottle after the opening. The bottle stopper of the present invention covers the outer surface of the mouth of the bottle to keep the mouth clean in a sealed state over a long period of time. The bottle stopper of the present invention has a simple configuration, and can be manufactured at a low cost.