Carton

• US 3,917,155 A
• Filed: 10/04/1972
• Issued: 11/04/1975
• Est. Priority Date: 03/02/1972
• Status: Expired due to Term

• Current Assignee: Robert P. Bemiss
• Original Assignee: Robert P. Bemiss
• Inventors: Bemiss, Robert P.
• Primary Examiner(s): Norton, Donald F.
• Assistant Examiner(s): Farrow, Douglas B.
• Application Number:
  US05/298,767
• Time in Patent Office: 1,126 Days
• Field of Search: 229/31R,31FS,30
• US Class Current: 229/169
• CPC Class Codes: B65D 5/2047 trapezoidal, e.g. to form a body with diverging side walls B65D5/2033 takes precedence
• CPC Class Codes: B65D 5/2052 characterised by integral closure-flaps
• CPC Class Codes: B65D 5/241 and the gussets folds connected to the inside of the container body B65D5/247 and B65D5/248 take precedence
• CPC Class Codes: B65D 5/242 the gussets folds comprising more than two gusset panels
• CPC Class Codes: B65D 5/243 the container body comprising a continuous rim or flange
• CPC Class Codes: B65D 5/245 the gussets folds comprising more than two gusset panels
• CPC Class Codes: B65D 5/246 the container body comprising a continuous rim or flange
• CPC Class Codes: B65D 5/4233 Cards, coupons, labels or the like formed separately from the container or lid
• CPC Class Codes: B65D 5/56 Linings or internal coatings , e.g. pre-formed trays provided with a blow- or thermoformed layer to protect the articles from mechanical damage B65D81/127
• CPC Class Codes: Y10S 229/90 including means to facilitate handling by a mechanical apparatus during manufacturing or filling
• CPC Class Codes: Y10S 229/903 Ovenable, i.e. disclosed to be placed in an oven

Abstract

A laminated or multi-layer wall carton or tray is provided which has a self-supporting outer layer or wall portion of paperboard which may be a laminated structure and may include a paperboard with a plastic, foil or a paper layer laminated thereto. The laminated layer of material may be adhered to the surface on one or on both sides of the paperboard, preferably before the tray or carton is die cut and formed. The carton includes a gusset fold and overlap at the corners for a leakproof construction and is concerned with the provision of a single gusset fold or a multiple gusset fold which may be heat sealed or glued in place. A plastic liner is either thermo-vacuum formed as a preliminary operation or in place in the paperboard tray or carton in contact with the plastic or paper coating thereon and this plastic line may be so preformed into place as to be separable therefrom and to provide with the lid to which it is heat sealed a separable container. This container may be vacuumized so that the plastic bag attached to the lid shrinks about the product therein to provide for minimizing of oxygenation.

Claims

1. A carton corner construction comprising a bottom wall, a pair of side walls disposed normal to each other and to said bottom wall, a flange on each side wall normal thereto, one side wall and its flange having coincident edges, the other side wall and its flange having offset edges whereby a portion of said lastmentioned flange projects beyond the edge of said other side wall, a gusset hinged by first and second fold lines to said one and other side walls respectively, a third fold line dividing said gusset into a pair of gusset panels folded along said third fold line against one another and against one of said side walls, a flange hinged by a fourth fold line to one of said gusset panels, a tab projecting from said flange portion normal thereto and in the same plane thereof, and said tab being in overlapped relationship to said one side wall flange.

2. The carton corner construction as defined in claim 1 wherein said tab is sandwiched between said one side wall flange and said gusset flange.

3. The carton corner construction as defined in claim 1 wherein said tab is formed by material robbed from the other of said gusset panels.

4. The carton corner construction as defined in claim 2 wherein said tab is formed by material robbed from the other of said gusset panels.

5. A carton corner construction comprising a bottom wall, a pair of side walls disposed normal to each other and to said bottom wall, a flange on each side wall normal thereto, one side wall and its flange having coincident edges, the other side wall and its flange having offset edges whereby a portion of said last-mentioned flange projects beyond the edge of said other side wall, a gusset hinged by first and second fold lines to said one and other side walls respectively, a third fold line medially of fourth and fifth fold lines dividing said gusset into first through fourth gusset panels folded along said first through fifth fold lines to bring two of said guesset panels against each other and against said one side wall and the remaining two of said gusset panels against each other and against said other side wall, a flange hinged by sixth and seventh fold lines to each of the centermost two of said four gusset panels, a tab projecting from said flange portion normal thereto and in the same plane thereof, one each of said centermost gusset panel flanges being folded about the respective sixth and seventh fold lines against said one and other side walls respectively, and said tab being in overlapped relationship to said one side wall flange.

6. The carton corner construction as defined in claim 5 wherein said tab is sandwiched between said one side wall flange and the associated centermost gusset panel glange.

7. The carton corner construction as defined in claim 5 wherein said tab is formed by material robbed from the gusset panel most closely adjacent said other side wall.

8. The carton corner construction as defined in claim 6 wherein said tab is formed by material robbed from the gusset panel most closely adjacent said other side wall.