Packaging for modified atmosphere packaging and method

A packaging for modified atmosphere packaging, comprising:

• a cardboard tray having a bottom and an upstanding peripheral wall, wherein the upstanding peripheral wall has an inner surface and has an upper edge with no cardboard flange extending therefrom;
• a plastic flange, distinct from the cardboard tray, arranged on top of and in direct contact with the upper edge of the peripheral wall, which plastic flange has in cross-section a first part extending horizontally, substantially parallel to the bottom of the tray, a second part depending from the first part downward along the outside of the peripheral wall and a third part depending from the first part, opposite of the second part, along the inside of the peripheral wall, wherein the third part lies against the inner surface of the peripheral wall and wherein the second part is spaced outwardly from the upper edge;
• and
• a plastic barrier foil adhered to and lining the inside of the cardboard tray and extending over the plastic flange to fix the plastic flange onto the upstanding peripheral wall of the cardboard tray.