초록 ▼

A paper container filling a liquid content which comprises an upper air gap formed therein for sealing solely carbon dioxide or nitrogen gas and carbon dioxide. Thus, a recess is produced on the paper container by utilizing a small pressure reduction in the container generated as a result of carbon

A paper container filling a liquid content which comprises an upper air gap formed therein for sealing solely carbon dioxide or nitrogen gas and carbon dioxide. Thus, a recess is produced on the paper container by utilizing a small pressure reduction in the container generated as a result of carbon dioxide dissolved in the liquid content, and the recess is used as a criterion of deciding the presence of gas substitution, presence of pinhole of the container and the propriety of sealing of the container only by the recess. This container can be fully inspected by the naked eye. Further, a method of filling gas and apparatus for filling the gas in a paper container formed of a synthetic resin layer of aluminum foil or polyethylene mainly with paper by eliminating the abovementioned disadvantages and performing gas substitution merely by adding a simple unit on a filling machine, thereby holding taste, odor and nutrient components of the container contents for 4 or longer months.

대표청구항 ▼

A method of filling and sealing a container for liquid having a head space at the top thereof, comprising the steps of: laterally advancing said container from a liquid filling station to a sealing station through a gas substitution station; filling the container with liquid at said filling station,

A method of filling and sealing a container for liquid having a head space at the top thereof, comprising the steps of: laterally advancing said container from a liquid filling station to a sealing station through a gas substitution station; filling the container with liquid at said filling station, so that a head space filled with air is provided above said liquid, through its upper end which is open; displacing air present in the head space of the container with inert gas injected through first and second gas filling outlets, each outlet vertically movable into said container from a first position thereabove to a lower second position just above the surface of the liquid but sufficiently spaced therefrom to prevent the liquid from splashing as a result of the injection of the gas from each of said gas filling outlets, to the respective first position of each outlet above the container; gradually closing the upper end of said container between said gas substitution station and said sealing station while one of said outlets is gradually withdrawn from the container, thereby trapping said inert gas in the head space; and then sealing said container at said sealing station.