Abstract: The tray comprises a bottom (1), a pair of sides (2) and a pair of headers (3), the sides (2) and the headers (3) comprising upper flaps (4, 5) engageable to each other, and it is characterized in that the flaps (5) of the headers comprise a pair of protrusions (6) which are inserted in complementary grooves (7) provided at the flaps (4) of the sides. The flaps (5) of the headers comprise a longitudinal folding line (9) and the flaps (5) of the headers also comprise a transversal folding line (15). It is obtained a tray provided with a lid, which is formed by said upper flaps of the headers and the sides, presenting a great stiffness, in the engagement between the flaps forming the lid and also in its resistance to compression when some trays are placed stacked.

Abstract: A tray comprising a bottom of the tray; a couple of headers; a couple of sides; a polygonal column on each of its corners; and two top flaps, each of which extends horizontally from one of the headers to the inner area of the tray is provided. The tray also comprises inclined folding lines that allow the folding of the headers and the sides on the bottom of the tray; wherein the inclined folding lines are located on the headers and on the top flaps. The tray is very strong and, at the same time, can be transported substantially flat, occupying a reduced space.

Abstract: The tray comprises a bottom (1) of the tray; a couple of headers (2); a couple of sides (3); a polygonal column (4) on each of its corners; and two top flaps (6), each of which extends horizontally from one of the headers (2) to the inner area of the tray; the tray also comprises inclined folding lines (7) that allow the folding of the headers (2) and the sides (3) on the bottom (1) of the tray; and it is characterised in that said inclined folding lines (7) are located on the headers (2) and on said top flaps (6).

Abstract: A tray for transporting products and a method for its manufacture, the tray being formed from a sheet of cardboard which is die cut and includes fold lines defining the bottom and sides of the tray. The tray includes a hollow corner column (5) into which a reinforcing element (6) is inserted.