Reclosable and stackable food tray and tray blank

• US 8,939,350 B2
• Filed: 03/14/2013
• Issued: 01/27/2015
• Est. Priority Date: 03/14/2013
• Status: Active Grant

• Current Assignee: WestRock Shared Services, LLC (WestRock Company)
• Original Assignee: Rock-Tenn Shared Services, LLC (WestRock Company)
• Inventors: Valencia, John
• Primary Examiner(s): ELKINS, GARY E
• Application Number:
  US13/827,396
• Publication Number:
  US 20140263600A1
• Time in Patent Office: 684 Days
• Field of Search: 229/103.3, 229/152, 229/153, 229/156, 229/157, 229/186
• US Class Current: 229/103.3
• CPC Class Codes: B65D 5/244 and the gussets folds connected to the outside of the container body B65D5/247, B65D5/248 take precedence
• CPC Class Codes: B65D 5/4204 Inspection openings or windows
• CPC Class Codes: B65D 5/6655 Local flaps or tabs provided at the lid edge opposite to the hinge
• CPC Class Codes: B65D 5/6658 combined with flaps or tabs provided at the side edges of the lid

Abstract

Disclosed are reclosable and stackable food trays formed from a single blank that are capable of being folded and glued on standard machinery. Embodiments of the invention include raised gussets that extend beyond the top edge of the side panels of the formed tray and beyond the top of the formed tray. In some embodiments, the raised gussets help prevent distortion in all dimensions and facilitate the stacking of multiple trays on top of one another such that the stacked trays cannot slide off the lower tray.

Claims

1. A reclosable and stackable food tray formed from a single piece of foldable material, the reclosable and stackable food tray comprising:

a bottom panel;

first and second side panels that are adjacent one another;

third and fourth side panels that are adjacent one another; and

a top panel;

wherein the first and second side panels are foldably connected to one another by a first gusset and the second and third side panels are foldably connected to one another by a second gusset, wherein the first and second gussets each have a height that is greater than a height of the first and second side panels such that the first and second gussets extend beyond the top panel of the tray;

wherein the third and fourth side panels are foldably connected to one another by a third gusset and the fourth and first side panels are foldably connected to one another by a fourth gusset, wherein each of the third and fourth gussets has a height that is greater than a height of the third and fourth side panels such that the third and fourth gussets extends beyond the top panel of the tray;

wherein the first and second gussets are folded and glued against an exterior side of the second side panel and the third and fourth gussets are folded and glued against an exterior side of the fourth side panel; and

wherein the first, second, third, and fourth gussets are configured to act as stops to prevent the top panel from skewing beyond each gusset.

2. The reclosable and stackable food tray of claim 1, wherein the top panel comprises a first top flap, a second top flap, a third top flap and a fourth top flap, wherein the first top flap extends from the first side panel, the second top flap extends from the second side panel, the third top flap extends from the third side panel, and the fourth top flap extends from the fourth side panel.

3. The reclosable and stackable food tray of claim 2, wherein the first top flap comprises a first tab on a first edge of the first top flap and the third top flap comprises a first slot configured to receive the first tab.

4. The reclosable and stackable food tray of claim 1, wherein the top panel comprises a window.

5. The reclosable and stackable food tray of claim 2, wherein the first top flap is substantially larger than each of the second, third and fourth top flaps.

6. The reclosable and stackable food tray of claim 3, wherein the first tab is a hook tab or a tuck tab.

7. The reclosable and stackable food tray of claim 4, wherein the first top flap is larger than the second, third, and fourth top flaps and has dimensions that are substantially the same as dimensions of the bottom panel.

8. The reclosable and stackable food tray of claim 1, wherein each of the four gussets extends beyond the height of the first, second, third and fourth side panels by about ⅛

inch to about ⅜

inch.

9. A reclosable and stackable food tray formed from a single piece of foldable material, the reclosable and stackable food tray comprising:

a bottom panel;

first and second side panels that are adjacent one another;

third and fourth side panels that are adjacent one another;

a top panel comprising a first top flap, a second top flap, a third top flap and a fourth top flap, wherein the first top flap extends from the first side panel, the second top flap extends from the second side panel, the third top flap extends from the third side panel, and the fourth top flap extends from the fourth side panel;

wherein the first top flap comprises a first tab on a first edge of the first top flap and the third top flap comprises a first slot configured to receive the first tab and wherein the first top flap further comprises a second tab on a second edge of the first top flap, and wherein one of the first top flap and the third top flap comprises a second slot configured to receive the second tab;

wherein the first and second side panels are foldably connected to one another by a first gusset and the second and third side panels are foldably connected to one another by a second gusset, wherein the first and second gussets each have a height that is greater than a height of the first and second side panels such that the first and second gussets extend beyond the top panel of the tray;

wherein the third and fourth side panels are foldably connected to one another by a third gusset and the fourth and first side panels are foldably connected to one another by a fourth gusset, wherein each of the third and fourth gussets has a height that is greater than a height of the third and fourth side panels such that the third and fourth gussets extends beyond the top panel of the tray; and

wherein the first, second, third, and fourth gussets are configured to act as stops to prevent the top panel from skewing beyond each gusset.