Reclosable package as well as thermoform packaging machine and method

A method for operating a thermoform packaging machine to produce a package, wherein the thermoform packaging machine includes a forming station for thermoforming a bottom film to form a tray, and the forming station includes a forming tool lower part having a mold cavity, the method comprising:

• thermoforming the tray with a side face having an undercut in the bottom film within the mold cavity of the forming station, wherein the mold cavity includes a wall segment configured to form the side face of the tray to include the undercut, the wall segment includes an upper part and a lower part, the wall segment is displaceably supported and capable to be displaced between a first position, at which the mold cavity is in a thermoforming configuration suitable for thermoforming the bottom film, and a second position, at which the mold cavity is in a removal configuration suitable for lowering the forming tool lower part, and the upper part of the wall segment is rotatably mounted on the lower part of the wall segment such that the upper part and the lower part may be displaced together, and such that the upper part is capable to execute a rotary movement relative to the lower part during the displacement;
• forming a dividing line between an edge extending circumferentially on an upper side of the tray and a clamping portion of the tray;
• closing the tray with a top film;
• forming a circumferentially extending, gas-tight and releasable first sealed seam between the top film and the tray along the edge;
• forming a second sealed seam between the top film and the clamping portion;
• and
• laterally displacing the wall segment of the mold cavity comprising the upper part and the lower part to remove the tray after the thermoforming, and rotating the upper part relative to the lower part to allow the tray to move past a projection of the undercut.