VORRICHTUNG UND VERFAHREN ZUM GASFÜLLEN UND ABDICHTEN EINES MIT GAS ZU FÜLLENDEN KANALS, DER IN EINEM ZUSAMMENKLAPPBAREN BEHÄLTER ANGEORDNET IST, UND SOLCH EINEN KANAL UMFASSENDER BEHÄLTERZUSCHNITT

摘要

The invention relates to a method and a device for gas filling and sealing of a duct intended to be filled with gas and positioned in a container of a collapsible type. The duct is defined by two opposite side walls which are joined along a connecting portion and comprises an inlet arranged in one of the side walls. A part of the container that comprises the inlet is clamped between an abutment and a gas module which is axially movable towards the abutment. Clamping occurs in such a manner that one off the two side walls included in the duct is allowed, in response to a gas flow supplied from the gas module and entering the duct through said inlet, to bulge to form a free passage into the duct for filling the same with gas. After completion of the gas filling, the duct is sealed. The invention also relates to a container blank having a duct which is specially developed for the method and the device.