Process for manufacturing a gas-filled multiple glazing unit

A process for manufacturing a gas-filled multiple glazing unit comprising at least two glass sheets, the process comprising:

• preassembling the glass sheets so that the glass sheets are positioned facing one another, at least one of the glass sheets being equipped with a spacer and each glass sheet being positioned inclined at an angle strictly greater than 0° and less than or equal to 10° to the adjacent glass sheet, so as to form at least one cavity, each cavity being located between two adjacent glass sheets and being completely closed on one of its sides;
• after said preassembling, partially blocking at least one of the sides of each cavity with a blocking element different from the spacer, said blocking element being positioned against said at least one of the sides so that said blocking element extends over only a first portion of said at least one of the sides to completely block said first portion, a second portion of said at least one of the sides, which is different from the first portion, being unblocked;
• after said partially blocking, filling each cavity by injecting gas via an injection side of the cavity to push air present in the cavity to escape via said second portion of said at least one of the sides that is unblocked;
• and
• after said filling, pressing the glass sheets against one another in order to seal the multiple glazing unit,
• wherein said at least one of the sides that is partially blocked is different from the injection side.