Abstract: A manufacturing method of a container formed integrally includes steps of preparing a mold, forming a gas shooting hole, injecting material in the mold for forming a container, shooting gas in the mold for forming an inner hollow layer, opening the mold and taking out a shaped container, and sealing a gas hole. The manufacturing method reduces time needed in forming a container in the mold, enhancing quality of containers produced, by inertia gas shot in material for a container injected in the mold.

Abstract: A sealing cap for coupling with an upper edge of a container includes a base disc, a spiral spring, a sucking plate and a soft cap body combined together. The soft cap body is able to be pressed down manually and pushed up by the spring and the sucking plate, to force air from the container to flow out of a hole in the outer circumference of the base disc. The air in the container flows through a stop valve, formed in the bottom center of the base disc, into the space between the base disc and the soft cap body. The air is stopped by a leak valve fixed in the outer circumference of the base disc. A repeated pressing action on the soft cap body is capable of displacing sufficient air from the container to create a partial vacuum therein.