EP2409929A1 - Emballage pour des oeufs - Google Patents

Emballage pour des oeufs Download PDF

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Publication number
EP2409929A1
EP2409929A1 EP10170497A EP10170497A EP2409929A1 EP 2409929 A1 EP2409929 A1 EP 2409929A1 EP 10170497 A EP10170497 A EP 10170497A EP 10170497 A EP10170497 A EP 10170497A EP 2409929 A1 EP2409929 A1 EP 2409929A1
Authority
EP
European Patent Office
Prior art keywords
egg
bottom part
nesting
egg package
projections
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10170497A
Other languages
German (de)
English (en)
Inventor
Andreas Mascheck
Jacob Hahn
Torben Rasmussen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Brodrene Hartmann AS
Original Assignee
Brodrene Hartmann AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Brodrene Hartmann AS filed Critical Brodrene Hartmann AS
Priority to EP10170497A priority Critical patent/EP2409929A1/fr
Priority to PCT/IB2011/052650 priority patent/WO2012010992A1/fr
Publication of EP2409929A1 publication Critical patent/EP2409929A1/fr
Withdrawn legal-status Critical Current

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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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/30—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure
    • B65D85/32—Containers, packaging elements or packages, specially adapted for particular articles or materials for articles particularly sensitive to damage by shock or pressure for eggs
    • B65D85/324—Containers with compartments made of pressed material

Definitions

  • the present invention pertains to an egg package of the kind set forth in the preamble of claim 1.
  • Such packages generally comprise a bottom part with a plurality of egg-receiving compartments.
  • the plurality of egg receiving compartments is usually arranged in at least two parallel rows.
  • the bottom part is often hingedly connected to a cover part so as to allow the cover part to move between an open position and a closed position.
  • the bottom part and cover part are being so constructed that the inner and outer surfaces of the bottom part as well as the inner surfaces and outer surfaces of the cover part are complementary, so that when the egg package is fully open it may be nested with other, identical egg packages for shipment and/or storage.
  • the egg packages are formed in such a way, that one fully open egg package fits within the egg package immediately preceding it in a stack.
  • This kind of stacking of egg packages is a very compact way of stacking them together, and it is this way of stacking them together that is usually referred to as nesting.
  • the distance between similar features of two immediately consecutive egg packages in the stack is referred to as the nesting distance.
  • the nesting distance thus poses a limit on how many egg packages that may be placed in a stack of a given height.
  • De-nesting of the egg packages in the stack is usually mechanically handled by a machine, in conjunction with packaging of eggs. By de-nesting is simply understood the separation of egg packages that are nested together. De-nesting is as mentioned usually performed by a machine, - a so called de-nesting machine, which can handle huge amounts of egg packages in a much shorter time than is possible if the de-nesting was performed by human operator.
  • Egg packages of the above mentioned kind are manufactured and handled in huge numbers. Thus, the ease at how they may be handled is a critical for the value of the egg packages. Especially, the ability for the egg package to be de-nested quickly and freely, for example onto factory conveying equipment, repeatedly and without error is a very important factor in the cost effective and efficient use of the egg packages.
  • an egg package formed by suction moulding of a fibrous material the egg package comprising the following main parts:
  • the egg receiving compartments must be of such a size and shape so as to accommodate a standard egg.
  • the outer dimensions of the egg package must be of such a size and shape so as to be used in standard egg packaging machines presently used in the industry.
  • the cover of an egg package of the above mentioned kind i.e. one that is made by suction moulding of a fibrous material
  • the cover of an egg package of the above mentioned kind is usually too soft to support layers of additional egg packages, filled with eggs, on top of each other. Without the upwardly extending projections located between the rows of compartments to support the cover when the egg package is closed, the weight of the additional egg filled egg packages will rest on the eggs of the lower packages in the stack, which then may break during storage and transport.
  • the slip angle used in prior art egg packages is usually approximately 8 degrees.
  • the slip angle is preferably defined as the angle between a side of the upwardly extending projections and a vertical plane, i.e. as half of the angle that two opposing sides of the upwardly extending projections form in relation to each other.
  • the slip angle is substantially greater than 9 degrees, for example somewhere in the range from 10 degrees to 20 degrees, preferably in the range from 11 degrees to 17 degrees, for example 11 degrees, 12 degrees, 13 degrees or 14 degrees. This allows for a nesting distance of 8 mm. or less.
  • the cover part has downwardly extending projections being so formed and arranged relative to each other that they are disposed substantially adjacent to the top of the upwardly extending projections of the bottom part when the cover is in the closed position
  • adjacent means that the downwardly extending projections are close to, for example within 2 mm from, the top of the upwardly extending projections, when the cover is in its closed position. This will give a flexible egg package that is able to support the cover in its closed position.
  • the downwardly extending projections are being so formed and arranged relative to each other that they rest on the top of the upwardly extending projections of the bottom part when the cover is in the closed position, instead of being disposed adjacent to the top of the upwardly extending projections of the bottom part, when the cover is in the closed position.
  • the downwardly extending projections are being so formed and arranged relative to each other that they rest on the top of the upwardly extending projections of the bottom part when the cover is in the closed position, instead of being disposed adjacent to the top of the upwardly extending projections of the bottom part, when the cover is in the closed position.
  • the egg package is moulded as one piece. This allows for a simple and efficient way of providing the above mentioned hinge connecting the bottom part and the cover part, namely by a weakening in the moulded material of the egg package.
  • the egg package is preferably made of moulded pulp, although other materials of suitable resilience, and strength could be used.
  • the egg package comprises a plurality of de-nesting projections.
  • the de-nesting projections aid in counteracting the above mentioned vacuum effect.
  • these de-nesting projections eases the mechanical de-nesting of the egg packages.
  • the distance between, two fully open, similar egg packages in a stack is determined by the extension of the de-nesting projections, which thereby define an effective nesting distance, which is smaller than or equal to 8 mm., but larger than the nesting distance which is solely defined by the slip angle.
  • an effective nesting distance which is smaller than or equal to 8 mm., but larger than the nesting distance which is solely defined by the slip angle.
  • the de-nesting projections are 10% - 20% larger than the nesting distance defined by the slip angle. This means that the effective nesting distance will be 10% - 20% larger than the nesting distance defined by the slip angle.
  • the den-nesting projections are approximately 1 mm. larger than the nesting distance defined by the slip angle.
  • the de-nesting projections may be distributed over both the cover part and the bottom part.
  • the individual egg packages in the stack may be more precisely aligned, for example caused by unevenness or ruggedness of the opposing surfaces of two consecutive egg packages in the stack is not allowed to accumulate through the stack, when the egg packages are nested together.
  • the cover part may further comprise a rim portion extending outward from the cover part and where at least some of the de-nesting projections are provided substantially adjacent to the rim portion of the cover part.
  • the rim portion of the cover part will further ease the de-nesting, because it will function as a "gripping area" for a de-nesting machine.
  • the bottom part may comprise a rim portion extending outward from the bottom part and where at least some of the de-nesting projections are provided adjacent to the rim portion of the bottom part.
  • At least some of the de-nesting projections may be provided at the underside of the egg package between neighboring egg receiving compartments in each row.
  • At least some of the de-nesting projections may be provided at the underside of the egg package between neighboring egg receiving compartments across each row.
  • At least some of the de-nesting projections are provided at the underside of the egg package between neighboring egg receiving compartments.
  • an egg package formed by suction moulding of a fibrous material, such as pulp, will usually have an uneven, rugged or coarse surface. This ruggedness may lead to differences in the surface on the order of magnitude of 1 mm. - 3 mm., and may thus compromise the possibility of achieving a reduced effective nesting distance.
  • the egg package has a substantially smooth outer surface.
  • the egg package may in one embodiment have a substantially smooth inner surface.
  • the egg package may have an outer surface that is substantially smoother than the inner surface of the egg package. This will provide an egg package that is easier to produce, than if both the inner and outer surfaces have to be smoothed, that at the same time may be easily mechanically de-nested without error.
  • the above mentioned surface smoothness may for example be achieved by an after pressing of the freshly moulded, and thereby still wet egg packages during the manufacturing process.
  • the slip angle defined by the upwardly extending projections of the bottom part permits a nesting distance, to other identical egg packages that is smaller than 11 mm., preferably smaller than 9 mm., even more preferably equal to 8 mm. or smaller than 8 mm. such as for a example 6 mm., or 5 mm.
  • the slip angle defined by the upwardly extending projections of the bottom part permits a nesting distance, to other identical egg packages that is between 3 mm. and 6 mm., such as for example 4 mm., 5 mm. or 5,2 mm.
  • egg packages of the kind disclosed in the present patent description is a commodity that is produced in tremendously high volumes, a reduction of the nesting distance by few millimeters may lead to a tremendous reduction of transportation and shipment costs.
  • the figures 1 - 4 illustrate two egg packages 2 according to a preferred embodiment of the invention as seen from different viewpoints.
  • FIG. 5 - 8 is illustrated different cross sections of the egg packages 2 illustrated in figures 1 - 4 .
  • the lines along which the cross sections are drawn are illustrated in Fig. 4 .
  • Fig. 1 shows an embodiment of an egg package 2 according to the invention nested together with another identical egg package 2.
  • the illustrated egg packages 2 are formed by suction moulding of a fibrous material.
  • the egg packages 2 are similar, in fact substantially identical in size and shape, so the description of the technical features of one of them also applies to the other one.
  • the egg package 2 comprises a bottom part 4 and a cover part 6.
  • the bottom part 4 comprises a plurality of egg-receiving compartments 8, of which only two are marked with the designation number 8 in order to increase the intelligibility of the figure.
  • the egg receiving compartments 8 have non-planar side surfaces 10 so as to match at least partially the outer contours of an egg.
  • the plurality of compartments 8 being arranged in at least two parallel rows with upwardly extending projections 12 located between the rows of compartments 8.
  • the cover part 6 is connected to the bottom part 4 by a hinge 14 so as to allow the cover part 6 to move between an open position and a closed position.
  • the egg package 2 is fully open, i.e. the cover 6 in its full open position.
  • the bottom part 4 and cover part 6 are being so constructed that when the egg package 2 is fully open it may be compactly nested with other, identical egg packages 3 for shipment and/or storage.
  • the cover part 6 is equipped with downwardly extending projections 16 being so formed and arranged relative to each other that they (16) are disposed substantially adjacent to the top 18 of the upwardly extending projections 12 of the bottom part 4 when the cover 6 is in the closed position.
  • the downwardly extending projections 16 are preferably being so formed and arranged relative to each other that they (16) rest on the top 18 of the upwardly extending projections 12 of the bottom part 4 when the cover 6 is in the closed position, instead of being disposed adjacent to the top 18 of the upwardly extending projections 12 of the bottom part 4, when the cover 6 is in the closed position.
  • the upwardly extending projections 12 of the bottom part 4 define a slip angle that permits a nesting distance, to other identical egg packages, of less than 8 mm.
  • the illustrated egg packages also have a rim portion 22 extending outward from the cover part 6. At the gable portion 24 of the cover 6 there are provided de-nesting projections 26 adjacent to the rim portion 22.
  • the de-nesting projections 26 are larger than the nesting distance defined by the slip angle ⁇ .
  • an effective nesting distance between the egg packages 2 is defined by the de-nesting projections 26.
  • the bottom part 4 also has a rim portion 28.
  • a mechanical feature of a de-nesting machine may also or alternatively engage the rim portion 28 in order to separate the egg packages 2 from each other.
  • Fig. 2 shows the egg packages 2 as seen from the underside.
  • de-nesting projections 27 at the underside of the egg package 2 between neighboring egg receiving compartments 8.
  • the illustrated de-nesting projections 26 and 27 aids in keeping the egg packages 2 separated from each other so that the above mentioned vacuum effect may be diminished during the mechanized de-nesting.
  • the egg package 2 also comprises a flap 30 hingedly connected to the bottom part 4.
  • the flap 30 is equipped with two outwardly projecting retainment means 32, which are configured to cooperate with complimentary retainment means 34 on the cover part 6 in such a way that the cover 6 may be held in a closed position, when the retainment means 32 are engages the complimentary retainment means 34 on the cover part 6.
  • Fig. 3 shows an end view of the egg packages 2 when they are nested together in the fully open position.
  • the egg packages 2 are moulded in one piece, and in this view the hinge 14 between the bottom part 4 and the cover part 6 is more clearly illustrated as a weakening in the material of the egg package 2 at the place where the bottom part 4 and the cover part 6 are connected to each other.
  • the hinge 36 between the flap 30 and the bottom part 4 is provided as a weakening in the material of the egg package 2 at the places where the two (the cover 4 and flap 30) are connected to each other.
  • the back side of the cover 6 is denoted by the designation number 45.
  • the bottom part 4 egg packages 2 have a plurality of upwardly extending projections 38 placed along the front side 40 of the bottom part 4 and a plurality of upwardly extending projections 42 placed along the back 44 of the bottom part 4.
  • Fig. 4 shows the nested egg packages 2 from above.
  • the first cross section along the line A - A is shown in Fig. 5 .
  • the flap 30 will be turned in relation to the hinge 36 until the top 46 of the projections 38 engages the surface 48 of the inwardly extending projections 50.
  • the cover 6 is then turned in relation to the hinge 14 until the inner side 52 of the back side 45 of the cover 6 engages the side 54 of the projections 42.
  • the non planar side surfaces 10 of the egg receiving compartments 8 generally define an angle ⁇ . In the illustrated embodiment the angle ⁇ is 30 degrees. However, it is understood that this angle could be larger or slightly smaller in other embodiments.
  • the second cross section B - B is illustrated in Fig. 6 .
  • the angle ⁇ is generally defined by the slopes of the sides 56 of the upwardly extending projections 12 and the slope of the sides 58 of the upwardly extending projections 42 placed at the back 44 of the bottom part 4.
  • the angles ⁇ is 36 degrees to 37 degrees.
  • the angle ⁇ is generally defined by the slope 60 of upwardly extending projections 38 placed at the front 40 of the bottom part 4 and a line parallel to the edge of the rim 28 of the bottom part 4, which effectively is a horizontal line, when the egg package 2 is placed in its fully open position on a flat horizontal surface.
  • the angle ⁇ is 117 degrees to 119 degrees, for example 117,5 degrees or 118 degrees.
  • Fig. 7 is illustrated the cross section C - C.
  • the upwardly extending projections 12 between the rows of egg receiving compartments 8 (not explicitly shown in this figure) in the bottom part 4 defines an angle ⁇ .
  • the angle ⁇ is actually twice the slip angle, because the slip angle is defined as slope of the surface 62 or 64 relative to a vertical plane, i.e. e a plane that is vertical when the egg package 2 is placed on a horizontal surface.
  • the angle ⁇ defined by the overall slope of the two opposing sides 62 and 64 of the upwardly extending projections 12 is therefore directly and unambiguously related to the slip angle.
  • the nesting distance between two consecutive egg packages 2 that are nested together is the distance between the tops 18 of the illustrated upwardly extending projections 12.
  • the slip angle which is equivalent to widening the angle ⁇ , it is possible to lower this nesting distance.
  • a widening of this slip angle cannot be done indiscriminately, because then the upwardly extending projections 12 between the rows of egg receiving compartments 8 will then become too short to provide adequate support for the top 20 of the cover 6 when it is in a closed position.
  • an egg package which may be compactly nested together with other, identical egg packages, with a nesting distance below the standard nesting distance, preferably below 11 mm., even more preferably below 8 mm..
  • a nesting distance below the standard nesting distance, preferably below 11 mm., even more preferably below 8 mm..
  • the slip angle has to be done under the design constraints that the outer dimensions of the egg package 2 has to fulfill certain requirements regarding size and shape or otherwise it cannot be used in conventional automatic packaging machines used in the industry today.
  • the shape and size of the egg receiving compartments 8 must comply with the dimensions of a standard egg.
  • the slip angle ⁇ is chosen to be in the interval from 15 degrees to 25 degrees, such as for example 18 degrees or 22 degrees.
  • Fig. 8 shows the cross section along the line D - D.
  • the de-nesting projections 16, 27 ensure an even nesting of the egg packages 2 and at the same time provide an air gap between the inner surface of the egg receiving compartments 8 of the lower egg package 2 and the outer surface of the egg receiving compartments 8 of the upper egg package 2 as well as an air gap between the inner surface of the cover 6 of the lower egg package 2 and the outer surface of the cover 6 of the upper egg package 2.
  • the de-nesting projections also aid in counteracting the before mentioned vacuum effect encountered during de-nesting of the egg packages 2.
EP10170497A 2010-07-22 2010-07-22 Emballage pour des oeufs Withdrawn EP2409929A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10170497A EP2409929A1 (fr) 2010-07-22 2010-07-22 Emballage pour des oeufs
PCT/IB2011/052650 WO2012010992A1 (fr) 2010-07-22 2011-06-17 Boîte à œufs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10170497A EP2409929A1 (fr) 2010-07-22 2010-07-22 Emballage pour des oeufs

Publications (1)

Publication Number Publication Date
EP2409929A1 true EP2409929A1 (fr) 2012-01-25

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ID=42983428

Family Applications (1)

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EP10170497A Withdrawn EP2409929A1 (fr) 2010-07-22 2010-07-22 Emballage pour des oeufs

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EP (1) EP2409929A1 (fr)
WO (1) WO2012010992A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2017413B1 (en) * 2016-07-25 2018-01-31 Huhtamaki Molded Fiber Tech Bv Packaging unit with cone top extension, and method therefor
US20220411173A1 (en) * 2019-11-11 2022-12-29 Huhtamaki Molded Fiber Technology B.V. Packaging unit with ribs and method for packing products

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD891272S1 (en) 2016-12-06 2020-07-28 Global Plastics, Inc. Egg carton
USD871926S1 (en) 2016-12-06 2020-01-07 Global Plastics, Inc. Egg carton
USD976715S1 (en) 2016-12-06 2023-01-31 Global Plastics, Inc. Egg carton
USD851502S1 (en) 2016-12-06 2019-06-18 Global Plastics, Inc. Egg carton
USD804324S1 (en) 2016-12-06 2017-12-05 Global Plastics, Inc. Egg carton
JP6410065B2 (ja) * 2017-11-13 2018-10-24 株式会社栗原製作所 プラスチック製の卵包装容器に対するラベルの自動封入方法
USD875552S1 (en) 2017-12-01 2020-02-18 Global Plastics, Inc. Egg carton lid

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2285129A (en) * 1938-09-10 1942-06-02 Schwartzberg Louis Container
US3120901A (en) * 1962-12-21 1964-02-11 Packaging Corp America Molded egg tray
US3471078A (en) * 1966-12-22 1969-10-07 Brodrene Hartman As Packing of fibre mass or other resilient material for eggs and other fragile objects
US3670952A (en) * 1971-02-03 1972-06-20 Richard Joseph Venuti Egg carton
JPS4837215U (fr) * 1971-09-04 1973-05-07
US3790063A (en) * 1971-11-17 1974-02-05 Hartmann As Brdr Carton for fragile objects
FR2441549A1 (fr) * 1978-11-16 1980-06-13 Boursier Leon Perfectionnement aux emballages moules en pate a papier
US4298156A (en) * 1980-06-20 1981-11-03 Diamond International Corporation Nestable and denestable molded egg cartons
EP0972724A1 (fr) * 1998-07-17 2000-01-19 Brodrene Hartmann A/S Emballage

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2285129A (en) * 1938-09-10 1942-06-02 Schwartzberg Louis Container
US3120901A (en) * 1962-12-21 1964-02-11 Packaging Corp America Molded egg tray
US3471078A (en) * 1966-12-22 1969-10-07 Brodrene Hartman As Packing of fibre mass or other resilient material for eggs and other fragile objects
US3670952A (en) * 1971-02-03 1972-06-20 Richard Joseph Venuti Egg carton
JPS4837215U (fr) * 1971-09-04 1973-05-07
US3790063A (en) * 1971-11-17 1974-02-05 Hartmann As Brdr Carton for fragile objects
FR2441549A1 (fr) * 1978-11-16 1980-06-13 Boursier Leon Perfectionnement aux emballages moules en pate a papier
US4298156A (en) * 1980-06-20 1981-11-03 Diamond International Corporation Nestable and denestable molded egg cartons
EP0972724A1 (fr) * 1998-07-17 2000-01-19 Brodrene Hartmann A/S Emballage

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL2017413B1 (en) * 2016-07-25 2018-01-31 Huhtamaki Molded Fiber Tech Bv Packaging unit with cone top extension, and method therefor
US20220411173A1 (en) * 2019-11-11 2022-12-29 Huhtamaki Molded Fiber Technology B.V. Packaging unit with ribs and method for packing products

Also Published As

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