Container having a rim or other feature encapsulated by or formed from injection-molded material

A tray having an at least partially encapsulated flange, the tray comprising:

• at least three sidewalls each having a top edge, the top edge of the at least three sidewalls corresponding to a top surface of the tray;
• a bottom surface adjacent to the at least three sidewalls;
• a flange extending laterally outward from the top edge and being foldably connected to the at least three sidewalls at the top edge, the flange comprising at least a portion of the top surface of the tray;
• a junction between the sidewalls and the flange at the top edge of the at least three sidewalls, the flange extends laterally outward from the junction and is foldably connected to the sidewalls at the junction;
• an injection-molded feature at least partially encapsulating the flange, the injection-molded feature comprising resin and having a first region in contact with the at least three sidewalls and at least a portion of the flange, and a second region adjacent the first region and extending laterally outward from the first region to a free edge of the injection-molded feature, the first region has a greater cross-sectional area than the second region;
• at least two corners, wherein each of the at least three sidewalls has two curved portions and an intermediate portion between the two curved portions, adjacent curved portions of each of the sidewalls form a respective corner of the at least two corners,
• the first region and the second region of the injection-molded feature extend around a perimeter of the tray with the first region in contact with the intermediate portion and the two curved portions of each of the at least three sidewalls.