Packaging container and folding methods for packaging container

Packaging container for shipping goods, wherein the packaging container is configured for conversion from a shelf configuration into a first packaging configuration by a first folding method, and from the shelf configuration into a second packaging configuration by a second folding method,

• wherein in the shelf configuration the packaging container is collapsible such that two opposite faces of the packaging container in the shelf configuration come in direct contact with each other,
• wherein in the first and second packaging configuration the packaging container is configured such that two opposite faces of the packaging container in the first or second packaging configuration are attached to each other by a dimensionally stable sidepiece,
• wherein a volume enclosed by the packaging container in the first packaging configuration is different from a volume enclosed by the packaging container in the second packaging configuration, and
• wherein in the first packaging configuration the dimensionally stable sidepiece is formed by first outer face parts of the two opposite faces of the packaging container in the shelf configuration and
• wherein in the second packaging configuration the dimensionally stable sidepiece is formed by the first outer face parts and middle face parts of the two opposite faces of the packaging container in the shelf configuration,
• wherein each of the two opposite faces of the packaging container in the shelf configuration comprises the dimensionally stable first outer face part, the dimensionally stable middle face part, and a dimensionally stable second outer face part, joined to each other by flexible joints, and
• wherein a first fastening device is at least configured to fasten a common edge of the first outer face part and the middle face part of a first face of the two opposite faces to an outer edge of the first outer face part of a second face of the two opposite faces, and/or
• wherein a second fastening device is at least configured to fasten a common edge of the middle face part and the second outer face part of the first face of the two opposite faces to a common edge of the first outer face part and the middle face part of the second face of the two opposite faces.