Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D5/00—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
  • B65D5/20—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
  • B65D5/28—Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with extensions of sides permanently secured to adjacent sides, with sides permanently secured together by adhesive strips, or with sides held in place solely by rigidity of material

Definitions

• the present invention relates to a punched blank which is intended to form a tray comprising a bottom part, two long sides and two short sides, which sides are folded up from the bottom part and united at their ends for completing the tray.
• the planar blank is primarily intended to consist of cardboard or corrugated fibreboard.
• Trays of fibreboard or other materials are well known. They are typically produced by punching a blank of corrugated fibreboard which is provided with folding lines for the short and long sides, whereupon these sides are folded up and united with each other at the ends to thereby form vertical corners compared to the bottom part.
• the blank is usually punched out and provided with narrow recesses between the intended long sides and the intended short sides at the corners of the bottom part, in such a way that the long sides are given their final length and the short sides are thereby provided with flaps which are folded in inside the long sides after folding up. These flaps are provided with glue and glued to the long sides after folding.
• the folding, and accordingly the completion, of the tray normally occurs automatically and the glue is cured after a few seconds, whereby the tray gets its strength.
• the trays which are produced according to said methods and which preferably consist of fibreboard are used for differ ⁇ ent purposes. They may for example be used to carry beer cans or completely different objects, such as vegetables.
• a normal tray usually has an outwardly curved long side as a result of the fact that the moveability of the cans in the tray influences the long sides with outwardly-directed forces during normal manual handling. This is of course a great disadvantage as the tray can thereby easily collapse due to folding of the long sides.
• the problems with the known trays have therefore been solved according to the present invention by creating a punched blank for a tray comprising a bottom part, two long sides and two short sides in one piece with the bottom part and marked with respect to this by pre-formed fold lines and intended to be folded up and united with each other at the ends, which blank is characterized in that the folding lines between the bottom part and at least the long sides are directed outwardly at the ends and form an angle with the middle part of the fold lines of 2-20°.
• the blank consists of corrugated fibreboard, plastics or the like.
• the punched blank according to the invention has short sides which are longer than the width of the bottom part.
• the punched blank is provided with straight fold markings, at a 90° angle with respect to the fold lines between the bottom part and the long sides in the long sides at the border between the middle part of the fold lines and the outwardly-directed end part of these.
• straight fold markings are made, at a 90° angle with respect to the fold lines between the bottom part and both the short and long sides at the border between the middle part of the fold lines and the outwardly-directed end part of these on both the short and long sides.
• the plane blank in the figure which consists of corrugated fibreboard, comprises a bottom part 1 of substantially rectangular shape and two long sides 2 and two short sides 3. Between the short and the long sides 3 and 2 slots 4 have been punched in such a way that the long sides 2 have been given their final length and the short sides 3 have been formed with flaps 5.
• fold lines have been pressed into the cardboard. These fold lines consist of a straight middle part 6, but have been directed outwardly at the ends and form a separate part 7 of the fold line. This outwardly-directed part 7 of the fold lines may form an angle of 2-20° with respect to the middle part 6 of the fold lines. These outwardly-directed parts 7 of the fold lines may be made only in the long sides whereas the short sides 3 may have a fold line 6 which extends all the way to the corners.
• the middle parts 6 of the fold lines have been drawn straight in the figure, but they may also consist of a part of a circle having a large radius which practically gives a straight line for the circular arc.
• both the short and the long sides 3 and 2 are folded up from the bottom part 1 at their fold lines and the flaps 5 are glued to the inside of the long sides 2.
• an inwardly-directed force will arise in the long sides 2.
• These folds will be greater, the greater the angle the outwardly-directed parts 7 has compared to the middle parts 6 of the fold lines.
• By creating an inwardly directed force in the long sides they will not tend to be cracked outwardly. They will instead rest against, and press against, the contents, for example beer cans in the tray. The same will of course occur even at the short sides if these have been provided with outwardly-directed end parts 7 of the fold lines.
• the effect is also obtained that the bottom part at the short sides will be given a smoother transition to the short sides 3. This is an advantage for the strength of the tray.
• the figure shows further fold indications 8 on both the long and the short sides at the border between the middle parts 6 and the outwardly-directed parts 7 of the fold lines. These fold markings 8 are made to make the tray more easily able to adopt its final shape, but they are not necessary for the function of the invention.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Cartons (AREA)
• Packages (AREA)
• Wrappers (AREA)
• Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
• Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)
• Sheet Holders (AREA)
• Packaging For Recording Disks (AREA)

Priority Applications (7)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20398100

Family Applications (1)

Country Status (12)

Cited By (1)

Citations (4)

Family Cites Families (3)

• 1995
  • 1995-04-27 SE SE9501548A patent/SE507070C2/sv not_active IP Right Cessation
• 1996
  • 1996-04-25 DE DE69616307T patent/DE69616307T2/de not_active Expired - Fee Related
  • 1996-04-25 EP EP96912379A patent/EP0824459B1/en not_active Expired - Lifetime
  • 1996-04-25 AT AT96912379T patent/ATE207439T1/de not_active IP Right Cessation
  • 1996-04-25 WO PCT/SE1996/000546 patent/WO1996033916A1/en active IP Right Grant
  • 1996-04-25 ES ES96912379T patent/ES2167559T3/es not_active Expired - Lifetime
  • 1996-04-25 DK DK96912379T patent/DK0824459T3/da active
  • 1996-04-25 PT PT96912379T patent/PT824459E/pt unknown
  • 1996-04-25 AU AU55210/96A patent/AU5521096A/en not_active Abandoned
  • 1996-04-25 TR TR97/01262T patent/TR199701262T1/xx unknown
• 1997
  • 1997-10-24 NO NO974920A patent/NO974920L/no not_active Application Discontinuation
  • 1997-10-27 FI FI974066A patent/FI974066A/fi not_active IP Right Cessation

Patent Citations (4)

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