Abstract: An inner electrode for barrier film formation is an inner electrode for barrier film formation that is inserted inside a plastic container having an opening, supplies a medium gas to the inside of the plastic container, and supplies high frequency power to an outer electrode arranged outside the plastic container, thereby generating discharge plasma on the inner surface of the plastic container to form a barrier film on the inner surface of the plastic container, and that is provided with a gas supply pipe having a gas flow path to supply a medium gas and an insulating member screwed into an end portion of the gas supply pipe to be flush therewith and having a gas outlet communicated with the gas flow path.

Abstract: A cleaning method is provided for on-site cleaning of equipment such as filling equipment that fills beverages, etc. into bottles, cans, and other containers, liquid treatment equipment for filling solutions, and pipe equipment for connecting said equipment, the method being able to increase significantly the cleanliness of portions in contact with the filling solution while shortening cleaning time and reducing the amount used of utilities such as cleaning solution, etc. In the cleaning method for on-site cleaning of the liquid pathways of equipment such as filling equipment (4) for filling beverages into bottles, cans and other containers, liquid-treatment equipment (3) for filling solutions, or pipe equipment (4p) that connects said equipment, liquid comprising nanobubbles is pumped into said equipment and is left undisturbed to soak for a prescribed period.

Abstract: An inner electrode for barrier film formation is an inner electrode for barrier film formation that is inserted inside a plastic container having an opening, supplies a medium gas to the inside of the plastic container, and supplies high frequency power to an outer electrode arranged outside the plastic container, thereby generating discharge plasma on the inner surface of the plastic container to form a barrier film on the inner surface of the plastic container, and that is provided with a gas supply pipe (101) having a gas flow path (101a) to supply a medium gas (G) and an insulating member (103) screwed into an end portion of the gas supply pipe (101) to be flush therewith and having a gas outlet (102) communicated with the gas flow path (101a).

Abstract: A barrier-film forming apparatus that forms a barrier film on an inner face of a container (12) having a concave or convex portion (12a) as a processing target, including: a dielectric member (50) having a cavity sized to enclose the container (12), an external electrode (13) covering an outer circumference of the dielectric member (50), an exhaust unit installed on an end face of the external electrode (13) on a side where a mouth (11) of the container (12) is located, with an insulating member (26) interposed therebetween, and depressurizing inside of the container (12) through an exhaust pipe (14), an internal electrode (17) inserted from a side of the exhaust pipe (14) and also serving as a gas blowout unit that blows out medium gas (19) for generating a barrier film into the container (12), and an electric-field applying unit that applies an electric field for generating exhaust between the external electrode (13) and a ground electrode.

Abstract: The present invention realizes an impedance control for avoiding the extinction of a plasma caused due to a sudden change in a load impedance, which may occur immediately after the plasma is generated. A film-forming apparatus of the present invention includes a power supply; a matching circuit; an electrode configured to receive electric power from the power supply through the matching circuit, and to generate a plasma inside a film forming chamber for accommodating a film forming target based on the electric power; and a control section configured to control an impedance of the matching circuit. The control section keeps the impedance of the matching circuit constant during a first period starting at a first time t1 when the power supply starts to supply the electric power to the electrode, and controls the impedance of the matching circuit based on a reflected-wave power from the electrode for a second period starting at a second time t2 when the first period ends.

Abstract: An inner electrode for barrier film formation is an inner electrode for barrier film formation that is inserted inside a plastic container having an opening, supplies a medium gas to the inside of the plastic container, and supplies high frequency power to an outer electrode arranged outside the plastic container, thereby generating discharge plasma on the inner surface of the plastic container to form a barrier film on the inner surface of the plastic container, and that is provided with a gas supply pipe (101) having a gas flow path (101a) to supply a medium gas (G) and an insulating member (103) screwed into an end portion of the gas supply pipe (101) to be flush therewith and having a gas outlet (102) communicated with the gas flow path (101a).