Method for designing and making a tapping stopper

摘要

A tapping stopper for a bottle is provided to prevent the content liquid from trickling along the outside of the bottle when pouring. The tapping stopper comprises a pouring cylinder having a trumpet-shaped lip, an auxiliary external cylinder having a trumpet-shaped lip, and a bottom plate connecting the pouring cylinder and the auxiliary external cylinder. The pouring cylinder and auxiliary external cylinder from a peripheral groove between them. The height difference between the cylinders is determined according to the viscosity of the content liquid.