EP2392519B1 - Caisse et procédé de mise en forme, de remplissage et de fermeture de cette caisse - Google Patents

Caisse et procédé de mise en forme, de remplissage et de fermeture de cette caisse Download PDF

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Publication number
EP2392519B1
EP2392519B1 EP20100305586 EP10305586A EP2392519B1 EP 2392519 B1 EP2392519 B1 EP 2392519B1 EP 20100305586 EP20100305586 EP 20100305586 EP 10305586 A EP10305586 A EP 10305586A EP 2392519 B1 EP2392519 B1 EP 2392519B1
Authority
EP
European Patent Office
Prior art keywords
case
case body
lid
lateral sides
bonding
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.)
Active
Application number
EP20100305586
Other languages
German (de)
English (en)
Other versions
EP2392519B8 (fr
EP2392519A1 (fr
Inventor
Olivier Hantz
Christine Bossire
Steinar Lein
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.)
Labeyrie Fine Foods
Original Assignee
Financiere De Kiel
Miko Plast AB
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 Financiere De Kiel, Miko Plast AB filed Critical Financiere De Kiel
Priority to EP20100305586 priority Critical patent/EP2392519B8/fr
Priority to DK10305586T priority patent/DK2392519T3/da
Priority to PCT/EP2011/059158 priority patent/WO2011151424A1/fr
Publication of EP2392519A1 publication Critical patent/EP2392519A1/fr
Application granted granted Critical
Publication of EP2392519B1 publication Critical patent/EP2392519B1/fr
Publication of EP2392519B8 publication Critical patent/EP2392519B8/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D5/00Rigid 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
    • B65D5/20Rigid 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
    • B65D5/22Rigid 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 held erect by extensions of one or more sides being doubled-over to enclose extensions of adjacent sides
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B25/00Packaging other articles presenting special problems
    • B65B25/06Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products
    • B65B25/061Packaging slices or specially-shaped pieces of meat, cheese, or other plastic or tacky products of fish
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B43/00Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/08Forming three-dimensional containers from sheet material
    • B65B43/10Forming three-dimensional containers from sheet material by folding the material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B43/00Forming, feeding, opening or setting-up containers or receptacles in association with packaging
    • B65B43/26Opening or distending bags; Opening, erecting, or setting-up boxes, cartons, or carton blanks
    • B65B43/265Opening, erecting or setting-up boxes, cartons or carton blanks
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65BMACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B7/00Closing containers or receptacles after filling
    • B65B7/16Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons
    • B65B7/28Closing semi-rigid or rigid containers or receptacles not deformed by, or not taking-up shape of, contents, e.g. boxes or cartons by applying separate preformed closures, e.g. lids, covers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D5/00Rigid 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
    • B65D5/001Rigid 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 stackable
    • B65D5/0015Rigid 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 stackable the container being formed by folding up portions connected to a central panel
    • B65D5/002Rigid 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 stackable the container being formed by folding up portions connected to a central panel having integral corner posts
    • B65D5/0025Rigid 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 stackable the container being formed by folding up portions connected to a central panel having integral corner posts the corner posts being formed as a prolongation of a doubled-over extension of the side walls
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D71/00Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans or pop bottles; Bales of material
    • B65D71/0088Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
    • B65D71/0092Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck provided with one or more rigid supports, at least one dimension of the supports corresponding to a dimension of the load, e.g. skids
    • B65D71/0096Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck provided with one or more rigid supports, at least one dimension of the supports corresponding to a dimension of the load, e.g. skids the dimensions of the supports corresponding to the periphery of the load, e.g. pallets
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D2571/00Bundles of articles held together by packaging elements for convenience of storage or transport, e.g. portable segregating carrier for plural receptacles such as beer cans, pop bottles; Bales of material
    • B65D2571/00006Palletisable loads, i.e. loads intended to be transported by means of a fork-lift truck
    • B65D2571/00061Special configuration of the stack

Definitions

  • the present invention relates to the field of cases (i.e. crates or boxes) intended for the storage and transport of goods.
  • the present invention relates to a case for storing and transporting goods, and a process of forming, filling and closing such a case.
  • the case and the process according to the present invention are particularly adapted to the packing and transport of fresh products, in particular sea products.
  • the purpose of the present invention is therefore to provide a case able to resist very heavy loads without becoming deformed, and thus adapted to stacking and transporting over long distances, and a method of forming, filling and closing such a case.
  • a purpose of the invention is to provide a case which has the above mentioned advantages and, at the same time, is light and uses little material.
  • the above-mentioned purpose is achieved by a method according to claim 1.
  • a case body is formed by folding a blank, without the addition of exterior elements or material and without bonding.
  • the pre-cuts and folding of the blank are chosen to provide the case body with sufficient rigidity to be self standing and to keep its global form at the time it is filled with products.
  • Once the case body is filled its lateral sides are temporarily maintained in position in parallel pairs by an exterior maintaining device. It should be noted that said lateral sides could be already maintained in position in parallel pairs by an exterior maintaining device when the case body is filled.
  • a lid is then bonded on the free ends of the lateral sides of the case body. Contrary to known methods, the lid is thus attached to the case body before each pair of adjacent lateral sides of said case body are possibly attached by bonding. It can therefore be positioned much more precisely.
  • the geometry of the case is not affected by possible defects occurring when fixing the edges of the case body.
  • the case can thus be formed as a parallelepiped, the geometry of which is almost perfect.
  • the case so formed constitutes a modular structure which is very resistant on all sides and particularly resistant to loads applied vertically on its top. The risks of distortion and deformation of the case under the effect of loads are thus reduced.
  • stacks of cases according to the present invention can be increased in height as the stability of the cases prevents collapsing.
  • a pallet supporting stacked cases produced with the method according to the invention does not need to be coated to ensure stability.
  • the blank and the lid used for the present method are made of polypropylene. More preferably, the blank and the lid used for the present method are integrally made of polypropylene without the use of additives.
  • Polypropylene has many advantages: It is both recyclable and recycled, which allows reducing its environmental impact, it is light, flexible and practical, and can be easily welded. Also, polypropylene is permeable to cold, which increases the benefit of cooled transport. Polypropylene being very resistant, the thickness of the sides, bottom and lid of the case can be reduced compared to cases made of less resistant materials such as polystyrene, and the over-all dimensions of the case are thus decreased. The reduced height of each pallet allows the lowering of its centre of gravity, which helps to prevent falling of the cases due to movement during the transport. The reduced over-all dimensions of the case further facilitate practicability thereof for the users.
  • bonding is to be understood as chemical bonding and, in particular, chemical bonding achieved either with or without additional material such as glue, for example.
  • the lid can be attached to the case body by adhesive bonding using glue, which is currently the most widespread method in the field of packing.
  • the lid can be attached to the case body by hot air welding.
  • Hot air welding is a simple and economic method, and it has a satisfactory environmental impact.
  • the lid can be attached to the case body by ultrasonic welding which also has a limited environmental impact since it is very energy saving.
  • case body and the lid are made in a recyclable material, for example polypropylene
  • the case can be 100% recyclable as no additional material (such as glue) is necessary.
  • the fixing of the lid by adhesive bonding or welding brings rigidity to the case body which, as such, is rather flexible. It avoids the hooping of the case, and can ensure its inviolability.
  • the lid is attached to each lateral side of the case body at a plurality of locations distributed on the top of the lateral side. Therefore, residues of products remaining at the free end of the lateral sides of the case body after filling can easily be pushed and evacuated from between the points of fixing of the lid and do not obstruct closing.
  • the lid is attached continuously all along the top of each lateral side of the case body, so as to keep the case completely inviolable.
  • At least two adjacent lateral sides of the case are attached together, by bonding, at their respective ends which are in contact and define an edge of the case.
  • the adjacent lateral sides can be attached by bonding at one (or several) location(s) along the height of the edge of the case or can be attached together over the entire height thereof.
  • the invention further concerns a case having a case body formed from one single blank by folding, with a bottom part and four lateral sides parallel in pairs, and a lid, characterized in that the lid is attached to the case body by bonding at at least one location of the top of each lateral side.
  • the lid can be attached to the case body, for example by welding or adhesive bonding.
  • the case body and the lid are made of polypropylene.
  • each corner of the case body delimitated by two adjacent lateral sides can be provided with a reinforcing wall having the same height as said lateral sides and forming a triangle with said lateral sides.
  • the reinforcing wall forms with the two adjacent lateral sides of the case body, a pillar having a triangular section and extending over the entire height of the case.
  • each corner of the case body can further be provided at its end facing the lid with an assembling pin, said assembling pin being engaged in an opening (i.e. a notch or hole) provided in the lid and protruding from the case so as to be engageable in a corresponding assembling opening provided in the bottom of an adjacent upper case.
  • Each assembling pin can, for example, be situated at the end of a reinforcing wall as defined here above, or at the end of one lateral side (or two adjacent lateral sides) of the case body.
  • the bottom part of the case body can comprise assembling openings for receiving the assembling pins of an adjacent lower case.
  • the case has a length approximately twice as long as its width.
  • the bottom part of the case body preferably comprises at least one assembling opening at each corner and at least one assembling opening near the middle of each long lateral side, such that a plurality of cases can be superimposed perpendicularly to each other.
  • the case 10 once formed, comprises a case body 14 having a bottom part 16, a first long side 18a, a second long side 18b, a first short side 20a and a second short side 20b, and a lid 22 adapted to cover and close said case body 14.
  • the lid 22 is initially separated from the case body 14.
  • the lid 22 could be formed in one piece with the case body 14.
  • the case 10 is intended for the storage of fresh sea products such as fish.
  • Figure 1A represents a blank 12, which, when it is made up into a volume, allows a case body 14 as shown in figures 3 or 8A to be obtained.
  • the blank 12 is achieved starting from a corrugated plate of polypropylene (for example 550 grams per square metre and a thickness of around 3 mm), cut out and marked by a standard press to indicate lines of folding.
  • the folding is conceived to allow optimal resistance of the case 10 with the least possible material (here polypropylene).
  • the structure of such a corrugated plate is formed by two exterior foils linked together by intermediate parallel walls. As shown in figures 1A and 1B , the plate is provided with flutes 15.
  • the blank 12 is preferably cut out from such plate so that, once the case body 14 is formed, the flutes 15 extend transversally on the bottom part 16, horizontally on the short lateral sides 20a, 20b and vertically on the long lateral sides of the case body 14 (see figure 3 ) .
  • the plate could also be devoid of flutes or the flutes could be oriented in the opposite direction.
  • the blank 12 has an axial symmetry with respect to planes X and Y.
  • the blank 12 comprises a central panel having a rectangular shape with a length L1 approximately twice as long as its width I1, intended to form the bottom part 16 of the case body 14.
  • This central panel 16 comprises four assembling openings on each side of plane Y: one assembling opening 24 at each corner and one assembling opening 26 near the middle of each long edge 163, 164.
  • These assembling openings 24, 26 are intended to receive assembling pins of adjacent cases (as will be described in more detail with reference to figure 8B ), and allow the drainage of melted ice and liquid from the fish contained in the box.
  • first flank 281 comprising a main part 30 linked to the central panel 16 by a folding line 32, and two side legs 34, linked to both lateral sides of the main part 32 by folding lines 36.
  • the length of the main part 30 is identical to the width I1 of the central panel 16, and its width I2 is identical to the height H1 desired for the case 10.
  • the length L5 of each side leg 34 is less than half the length L1 of the central panel 16.
  • the blank 12 further comprises, extending from the first long edge 163 of the central panel 16, a third flank 283 in two parts 38, 40.
  • a first part 38 of the third flank 283 is connected to the first long edge 163 of the central panel 16 by a folding line 42, and the second part 40 is connected to said first part 38, on the side opposite to the central panel 16, by a folding line 44.
  • the length of the first part 38 is equal to the length L1 of the long edge 163 of the central panel 16 to which it is connected, and its width 13, to the height H1 desired for the case.
  • the second part 40 has approximately the same width 13 as the first part 38.
  • said first part 38 and the main part 46 of said second part 40 are intended to form the first long side 18a of the case body 14.
  • the second part 40 comprises a main part 46 having a length slightly smaller than L1, which is extended at each of its side ends by two flaps 48, 50.
  • the first flaps 48 are linked to the main part 46 by folding lines 52.
  • Each first flap 48 is provided with an assembling pin 54 at its one end to be oriented upwards once the case body 14 is formed.
  • the blank 12 is pre-cut so as to form such an assembling pin 54 extending from the end of the each first flap 48 oriented towards the centre of the blank 12.
  • Each first flap 48 is further provided with an opening (notch) 56 at its other end (i.e. at its free end).
  • each opening 56 has a shape complementary to that of the assembling pins 54.
  • the second flaps 50 are linked to the first flaps 48 at their sides opposite to the main part 46, by folding lines 58.
  • each main part 46 As shown in figures 3 and 4 , four small lock tabs 60 are provided at the long free end of each main part 46.
  • a fourth flank 284 similar to said third flank 283, extends from the second long edge 164 of the central panel 16 and is intended to form the second long side 18b of the case body 14.
  • FIG. 1C shows a lid 22 adapted to cover and close the case body 14.
  • the lid 22 is a rectangular corrugated plate made of polypropylene, having a length and width approximately equal to those L1, 11 of the case body 14, and a thickness of around 3 mm.
  • the lid 22 comprises a hole 82 intended to cooperate with an assembling pin 54 of the case body 14.
  • the lid 22 is provided with flutes 81 oriented in its transversal direction, for maximal stabilisation.
  • the first and second flanks 281, 282 are first folded to 90° along the folding line 32 extending along each short edge 161, 162 of the central panel 16.
  • the main parts 32 and the side legs 34 are all perpendicular to the central panel 16.
  • the side legs 34 are again folded to 90° along the respective folding line 36 so as to be positioned above the long edges 163, 164 of the central panel 16.
  • third and fourth flanks 283, 284 are folded over the said legs 34.
  • the long sides 18a, 18b of the case thus comprise three layers (first part 38, second part 40 and legs 34 interposed therebetween), whereby the case is reinforced and able to carry heavy loads.
  • the lock tabs 60 are eventually inserted in corresponding slits 62 of the central panel 16 (see figure 4 ), thus allowing all lateral sides of the case body 14 to be well maintained in position.
  • each reinforcing wall 48 forms, with two adjacent lateral sides of the case body 14, a pillar with a triangular section. In the illustrated embodiment, each reinforcing wall 48 extends at an angle of 45° from each of the adjacent lateral sides of the case body 14. As shown on figure 3 , the assembling pin 54 of each reinforcing wall 46 protrudes from the case body 14 and the opening 56 of each reinforcing wall 48 is placed directly above an assembling opening 24 formed at a corner of the bottom part 16.
  • the second flap 50 is folded along a main part 30, thus enhancing the short side 20a, 20b of the case body 14.
  • the assembling pins 54 could be provided at the free end of the lateral sides 18a, 18b, 20a, 20b of the case body 14.
  • an assembling pin forming a right angle and protruding from the top of two adjacent lateral sides 18a, 18b, 20a, 20b of the case body 14 could be formed at each edge (corner) of the case body 14.
  • the lid 22 is preferably provided with notches at each of its corners so that it can be adapted on the top of the case body 14, allowing the assembling pins provided on top of each corner of the case body 14 to protrude.
  • the case body 14, laid out on a conveyor 64 is filled, for example with fresh products such as fish 66. Due to the pressure applied by the fish 66 contained in the case body 14, each second flap 50 leans against a main part 30 of the case body 14 (see figure 3 ) and thus holds the adjacent reinforcing wall 48 in place.
  • the second flap 50 is of sufficient length to avoid the products contained in the case becoming wedged between the second flap 50 and the main part 30.
  • the length 16 of each second flap 50 is chosen so that the distance d1 (see figure 3 ) between the most adjacent long side of the case body 14 and the end of said second flap 50 is approximately equal to 2/3 of half of the width I1 of the case.
  • the lateral sides 18a, 18b, 20a, 20b of the case body 14 buckle slightly under the effect of the weight of fish 66.
  • the case body 14 is brought by the conveyor 64 towards a guide 68 having a funnel-shaped first portion 70 where its two lateral sides 68a, 68b converge and a second portion 72 where the distance separating said two lateral sides 68a, 68b is constant and equal to the width I1 of the case body 14.
  • the long sides 18a, 18b of the case body 14 are set in an upright position and thus perfectly parallel to each other once the case body 14 arrives at the second portion 72 of the guide 68.
  • the case body 14 is then brought by the conveyor 64 to a fixed work station 74. At this station, trap doors 76a, 76b, sliding upwards and running along the short sides 20a, 20b of the case body 14 position said short sides 20a, 20b perpendicularly to the bottom part 16 and the long sides 18a, 18b.
  • the lid 22 is fixed to the case body 14 by hot air welding.
  • a heat gun produces a jet of hot air that softens both the edges of the lid 22 and the top of the lateral sides 18a, 18b, 20a, 20b of the case body 14. Heating is carried out, for example, at a temperature of 270° and lasts 12 seconds.
  • the lid 22 is then positioned on the top of the case body 14, each assembling pin 54 being introduced in a hole 82 of the lid 22 so as to finally protrude from the lid 22.
  • the lid 22 has a length and width equal to that of the case body, its edges are precisely positioned on the free end of each lateral side of the case body 14. It should be noted that the lid 22 could also be provided with rims extending from its four edges.
  • lid 22 is then attached to each lateral side of the case body 14 at a plurality of locations 86 regularly distributed on the top of each lateral side, by applying a punctual pressure with a pressing finger 89 to the softened edge of the lid 22, thus sealing the lid 22 and the case body 14.
  • lid 22 is sealed with the first and second long sides 18a, 18b and with the first and second short sides 20a, 20b of the case body 14. That is, lid 22 is sealed with legs 34, and with parts 38 and 46 of the third and fourth flanks 283 and 284 at their folding line 44.
  • the lid 22 is further sealed with the top of the main parts 30 of the first and second flanks 281, 282 and possibly with each second flap 50 of the third and fourth flanks 283, 284 leaning against said main parts 30.
  • pressure can be applied by a caster moved gradually along the edges of the lid.
  • the lid can be fixed in one step by application of a uniform pressure on the whole of its contour.
  • each edge 90 (see figure 7 ) formed between two adjacent lateral sides 18a, 18b, 20a, 20b of the case 10
  • said adjacent lateral sides are attached by bonding, for example by welding or adhesive bonding, over the entire height H1 of the case 10.
  • bonding at an edge or each edge of the case 10 can be carried out only locally, at one or several locations over the height of the case 10.
  • a case 10 as previously described can be provided with pre-cuts to enable the case to be easily opened.
  • the lid 22 can be provided with at least two lines of pre-cuts forming a strip extending in the longitudinal direction of the case, preferably over the entire length thereof.
  • the lid 22 can be further provided with a handle placed on this strip, near an end thereof, thus allowing easy opening of the case by pulling the handle, and tearing off the strip at least partially.
  • the case can be opened by passing a hot wire along the interior face of a lateral side of the case, over almost the entire height of the case.
  • the case can be opened by applying a hot wire with a uniform pressure against a lateral side of the case.
  • a hot wire bent in a rectangular shape is applied against a lateral side of the case, thus forming in this lateral side a hole having the same rectangular form as the said hot wire.
  • the box is preferably tilted during the opening process thereof, thus allowing the fish to slide to a corner or one side of the case when the hot wire cuts the opposite side.
  • polypropylene when it is heated at a sufficient temperature, turns to vapour of CO 2 and water, which are not toxic. Consequently, if the polypropylene used for the case does not contain any additives, there is no risk of the content of the case becoming contaminated during the opening process (even if this content is agro alimentary products such as fish and even if the case is not tilted during the process).
  • the assembling openings 24, 26 formed in the bottom part 16 of the case 10 allow the stacking of a plurality of such cases, in several layers, in a so-called crisscrossed or perpendicular pattern which will be described hereunder in more detail with reference to figures 8A, 8B and 9 .
  • a lower case 10' and an upper case 10 such as described with reference to figures 1 to 7 , are placed perpendicularly to each other such that a corner of one case is superposed with a corner of the other case, thereby constituting a vertical column of two stacked pillars having a triangular section, each of them being formed by a reinforcing wall 48, 48' and the two adjacent lateral sides of the case body 14, 14'.
  • a first assembling pin 54' of the lower case 10' is engaged in an assembling opening 26 of the upper case provided near the middle of one long side of the upper case.
  • Figure 9 shows a pallet supporting two layers I, II of cases, each layer comprising three cases such as described with reference to figures 1 to 7 .
  • each case preferably has a length L1 approximately twice as long as its width I1.
  • the three cases 101', 102' and 103' thus form a parallelepiped the length of which is equal to the sum of the length and the width of a case, and the width of which is equal to the length of a case.
  • the upper layer II has the same configuration than the lower layer I, but the two layers I, II are configured in a perpendicular pattern. That is, each case of the upper layer II is placed above at least one case of the lower layer I which is oriented perpendicularly thereto. As an example, the transversal case 103 of the upper layer is placed above and perpendicularly to the first and second layers 101', 102' of the lower layer I.
  • This configuration enables the stacked cases to be imbricated, and the pallet to be stabilised thanks to the optimised repartition of the mechanical forces.
  • each case of an upper layer covers entirely a case of the lower layer.
  • each case of an upper layer faces and is parallel to the adjacent case of the lower layer.
  • each pillar of each case is positioned facing a pillar of a case of an adjacent (upper or lower) layer.
  • Cases positioned in a parallel pattern have a greater carrying capacity due to the said pillars. Once placed one above the other, the pillars form continuous reinforcing structures, and so maximize the absorption of the down force (due to the load of the upper cases).
  • the stacking pattern of the cases on a pallet can be a combination of the above described parallel and perpendicular patterns.
  • a stacking composed of several layers is provided with at least two superimposed layers configured in a parallel pattern and at least two superimposed layers configured in a perpendicular pattern.
  • the stacking comprises three bottom layers of cases disposed in parallel pairs and forming a parallel pattern, and six upper layers of cases in a perpendicular pattern.
  • the two stacking patterns that is by placing on the pallet at least two layers of cases disposed in a parallel pattern and further layers placed above in a perpendicular pattern, it is possible to obtain maximum absorption of the down force (load of the upper cases) and good stability of the stack.
  • a case 10 as described previously can be delivered to the end user in the form of a cut out and pre marked plate.
  • the user can more easily store plates of polypropylene than bulky cases.
  • the cases can be formed starting from a standard machine used for example for the forming of cases out of cardboard. However, the use of a machine is not essential for forming the case as the folding of the case can be done manually.
  • the case body 14 and the lid 22 are both formed from a corrugated plate of polypropylene having a grammage of 550 grams per square metre and a thickness of approximately 3 mm.
  • the length L1 of the central panel 16 is 785 mm
  • the width I1 of the central panel 16 is 390 mm
  • the width I2 of the main part 30 (which is equal to the height desired for the case) is 165 mm
  • the length L5 of each leg 34 is 345 mm
  • the width I4 of reinforcing wall 48 (first flap) is 50 mm
  • the width I6 of second flap 50 is 70 mm.
  • a case having the afore-mentioned characteristics has a total weight of less than 850 g. Three such cases are able to carry a fully loaded pallet of 800 kg.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Stackable Containers (AREA)

Claims (19)

  1. Procédé de mise en forme, de remplissage et de fermeture d'une caisse (10) ayant un corps de caisse (14) formé à partir d'un seul flan (12) et d'un couvercle (22), caractérisé en ce qu'il comprend les étapes consistant à :
    - plier le flan (12) afin de donner au corps de caisse (14) une forme telle qu'il comprend une partie de fond (16) et quatre côtés latéraux (18a, 18b, 20a, 20b),
    - remplir le corps de caisse (14),
    - maintenir les côtés latéraux (18a, 18b, 20a, 20b) parallèles deux à deux au moyen d'un dispositif de maintien extérieur, afin d'empêcher leur déformation,
    - tandis que les côtés latéraux sont maintenus parallèles deux à deux, fixer le couvercle (22) sur le corps de caisse par liaison, à au moins un emplacement sur l'extrémité libre de chaque côté latéral (18a, 18b, 20a, 20b), et
    - après avoir fixé le couvercle, libérer les côtés latéraux (18a, 18b, 20a, 20b) du corps de caisse (14),
    ce par quoi la caisse forme un parallélépipède.
  2. Procédé selon la revendication 1, dans lequel, lorsque les côtés latéraux (18a, 18b, 20a, 20b) sont maintenus parallèles deux à deux et que le couvercle (22) est fixé au corps de caisse (14), dans chaque paire de côtés latéraux adjacents dudit corps de caisse (14), les deux côtés latéraux adjacents ne sont pas reliés entre eux.
  3. Procédé selon la revendication 1 ou 2, dans lequel l'étape consistant à maintenir les côtés latéraux (18a, 18b, 20a, 20b) parallèles deux à deux comprend l'étape consistant à amener le corps de caisse (14) vers un guide (68) ayant une première partie en forme d'entonnoir (70) où ses deux côtés latéraux (68a, 68b) convergent et une seconde partie (72) où la distance séparant lesdits deux côtés latéraux (68a, 68b) est constante et égale à la largeur du corps de caisse (14), deux côtés opposés (18a, 18b) du corps de caisse (14) étant redressés et parallèles entre eux une fois que le corps de caisse (14) arrive au niveau de ladite seconde partie (72).
  4. Procédé selon la revendication 3, dans lequel le corps de caisse (14) est amené à un autre poste de travail (74) où des volets (76a, 76b) coulissant vers le haut et circulant le long des côtés (20a, 20b) du corps de caisse (14), positionnent les deux autres côtés opposés (20a, 20b) du corps de caisse (14) perpendiculairement par rapport à la partie de fond (16).
  5. Procédé selon la revendication 3 ou 4, dans lequel le corps de caisse (14) est amené vers le guide par un transporteur (64).
  6. Procédé selon l'une quelconque des revendications 1 à 5, comprenant en outre, après l'étape consistant à fixer le couvercle (22) sur le corps de caisse (14), l'étape consistant à fixer ensemble, par liaison, au moins deux côtés latéraux (18a, 18b, 20a, 20b) adjacents de la caisse (10) à leurs extrémités respectives qui sont en contact et définissent un bord (90) de la caisse (10).
  7. Procédé selon l'une quelconque des revendications 1 à 6, dans lequel la liaison est une liaison chimique sans matériau supplémentaire.
  8. Procédé selon l'une quelconque des revendications 1 à 7, dans lequel la liaison est obtenue par soudage à l'air chaud.
  9. Procédé selon l'une quelconque des revendications 1 à 7, dans lequel la liaison est obtenue par soudage par ultrasons.
  10. Procédé selon l'une quelconque des revendications 1 à 6, dans lequel la liaison est obtenue par liaison adhésive.
  11. Procédé selon l'une quelconque des revendications 1 à 10, dans lequel le couvercle (22) est fixé à chaque côté latéral (18a, 18b, 20a, 20b) du corps de caisse (14) à une pluralité d'emplacements répartis sur l'extrémité libre du côté latéral (18a, 18b, 20a, 20b).
  12. Caisse (10) ayant un corps de caisse (14) formé à partir d'un seul flan (12) par pliage, avec une partie de fond (16) et quatre côtés latéraux (18a, 18b, 20a, 20b) parallèles en paires, et un couvercle (22), caractérisée en ce que le couvercle (22) est fixé au corps de caisse (14) par liaison, à au moins un emplacement sur l'extrémité libre de chaque côté latéral (18a, 18b, 20a, 20b), la caisse formant ainsi un parallélépipède.
  13. Caisse (10) selon la revendication 12, dans laquelle le corps de caisse (14) et le couvercle (22) sont réalisés à partir de polypropylène.
  14. Caisse (10) selon la revendication 12 ou 13, dans laquelle chaque coin dudit corps de caisse (14) délimité par deux côtés latéraux (18a, 18b, 20a, 20b) adjacents est prévu avec une paroi de renforcement (48) ayant la même hauteur que lesdits côtés latéraux et formant un triangle avec lesdits côtés latéraux.
  15. Caisse (10) selon l'une quelconque des revendications 12 à 14, dans laquelle chaque coin du corps de caisse (14) est muni d'un ergot d'assemblage (54) au niveau de son extrémité faisant face au couvercle (22), ledit ergot d'assemblage (54) étant mis en prise dans une ouverture (82) prévue dans le couvercle (22) et faisant saillie de la caisse (10) afin de pouvoir se mettre en prise dans une ouverture d'assemblage (24, 26) correspondante prévue au fond d'une caisse supérieure (10) adjacente, et la partie de fond (16) du corps de caisse (14) comprend des ouvertures d'assemblage (24, 26) pour recevoir les ergots d'assemblage (54) d'une caisse inférieure (10) adjacente.
  16. Caisse (10) selon les revendications 14 et 15, dans laquelle chaque ergot d'assemblage (54) est prévu à l'extrémité d'une paroi de renforcement (48).
  17. Caisse (10) selon l'une quelconque des revendications 12 à 16, ayant une longueur qui est deux fois aussi longue que sa largeur.
  18. Caisse (10) selon les revendications 15 et 17, dans laquelle la partie de fond (16) du corps de caisse (14) comprend au moins une ouverture d'assemblage (24) à chaque coin et au moins une ouverture d'assemblage (26) au voisinage du milieu de chaque long côté latéral (18a, 18b), de sorte qu'une pluralité de caisses (10) peuvent être superposées perpendiculairement les unes par rapport aux autres.
  19. Caisse selon l'une quelconque des revendications 12 à 18, dans laquelle le couvercle (22) est séparé du corps de caisse (14).
EP20100305586 2010-06-03 2010-06-03 Caisse et procédé de mise en forme, de remplissage et de fermeture de cette caisse Active EP2392519B8 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20100305586 EP2392519B8 (fr) 2010-06-03 2010-06-03 Caisse et procédé de mise en forme, de remplissage et de fermeture de cette caisse
DK10305586T DK2392519T3 (da) 2010-06-03 2010-06-03 Æske og fremgangsmåde til formning, fyldning og lukning af en sådan æske
PCT/EP2011/059158 WO2011151424A1 (fr) 2010-06-03 2011-06-01 Boîte et procédé permettant de former, remplir et fermer ladite boîte

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20100305586 EP2392519B8 (fr) 2010-06-03 2010-06-03 Caisse et procédé de mise en forme, de remplissage et de fermeture de cette caisse

Publications (3)

Publication Number Publication Date
EP2392519A1 EP2392519A1 (fr) 2011-12-07
EP2392519B1 true EP2392519B1 (fr) 2013-04-17
EP2392519B8 EP2392519B8 (fr) 2013-05-29

Family

ID=42668719

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100305586 Active EP2392519B8 (fr) 2010-06-03 2010-06-03 Caisse et procédé de mise en forme, de remplissage et de fermeture de cette caisse

Country Status (3)

Country Link
EP (1) EP2392519B8 (fr)
DK (1) DK2392519T3 (fr)
WO (1) WO2011151424A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3332208A (en) * 1965-02-15 1967-07-25 R A Jones & Company Inc Method and machine for lidding cartons
FR2261199A1 (en) * 1974-02-14 1975-09-12 Barrez Ste Normande Carton Ond Folded cardboard box with lid glued on - tear-open area on lid marked by line of perforations
NL1002381C2 (nl) * 1996-02-19 1997-08-20 Golfkartonindustrie Oehermesoe Uit een plano gevouwen doos.
US6640975B2 (en) * 2001-08-21 2003-11-04 Conagra Grocery Products Company Stackable self-aligning container
US6899266B2 (en) * 2001-11-02 2005-05-31 International Paper Company Stackable paperboard container

Also Published As

Publication number Publication date
WO2011151424A1 (fr) 2011-12-08
EP2392519B8 (fr) 2013-05-29
EP2392519A1 (fr) 2011-12-07
DK2392519T3 (da) 2013-07-22

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