EP3102495B1 - Method for manufacturing a box and box obtained by said method - Google Patents
Method for manufacturing a box and box obtained by said method Download PDFInfo
- Publication number
- EP3102495B1 EP3102495B1 EP14708078.2A EP14708078A EP3102495B1 EP 3102495 B1 EP3102495 B1 EP 3102495B1 EP 14708078 A EP14708078 A EP 14708078A EP 3102495 B1 EP3102495 B1 EP 3102495B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- metal
- side flaps
- box
- folding
- 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
Links
- 238000000034 method Methods 0.000 title claims description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000002184 metal Substances 0.000 claims description 40
- 239000000463 material Substances 0.000 claims description 31
- 239000000853 adhesive Substances 0.000 claims description 13
- 230000001070 adhesive effect Effects 0.000 claims description 13
- 238000007493 shaping process Methods 0.000 claims description 6
- 239000013013 elastic material Substances 0.000 claims description 5
- 238000004049 embossing Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000007645 offset printing Methods 0.000 claims description 3
- 239000010410 layer Substances 0.000 description 36
- 238000002788 crimping Methods 0.000 description 5
- 239000011888 foil Substances 0.000 description 5
- 238000005096 rolling process Methods 0.000 description 5
- 238000005304 joining Methods 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 241000217377 Amblema plicata Species 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000002304 perfume Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 235000015096 spirit Nutrition 0.000 description 1
- 239000005028 tinplate Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
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
- B65D5/008—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 the container body having a pyramidal shape
-
- 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
- B65D15/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials
- B65D15/22—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, sections made of different materials of polygonal cross-section
-
- 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
- B65D43/00—Lids or covers for rigid or semi-rigid containers
- B65D43/02—Removable lids or covers
- B65D43/0202—Removable lids or covers without integral tamper element
- B65D43/0214—Removable lids or covers without integral tamper element secured only by friction or gravity
- B65D43/0216—Removable lids or covers without integral tamper element secured only by friction or gravity inside a peripheral U-shaped channel in the mouth of the container
-
- 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
- B65D5/02—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 or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body
- B65D5/0281—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 or erecting a single blank to form a tubular body with or without subsequent folding operations, or the addition of separate elements, to close the ends of the body the tubular body presenting double or multiple walls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2105/00—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs
- B31B2105/001—Rigid or semi-rigid containers made by assembling separate sheets, blanks or webs made from laminated webs, e.g. including laminating the webs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B2110/00—Shape of rigid or semi-rigid containers
- B31B2110/10—Shape of rigid or semi-rigid containers having a cross section of varying size or shape, e.g. conical or pyramidal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/003—Straightening the side walls of boxes; Squaring collapsed folded box blanks; Deforming boxes
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00018—Overall construction of the lid
- B65D2543/00064—Shape of the outer periphery
- B65D2543/0012—Shape of the outer periphery having straight sides, e.g. with curved corners
- B65D2543/00175—Shape of the outer periphery having straight sides, e.g. with curved corners four straight sides, e.g. trapezium or diamond
- B65D2543/00194—Shape of the outer periphery having straight sides, e.g. with curved corners four straight sides, e.g. trapezium or diamond square or rectangular
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00018—Overall construction of the lid
- B65D2543/00259—Materials used
- B65D2543/00314—Combination, e.g. laminates, several different materials
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00342—Central part of the lid
- B65D2543/00351—Dome-like
- B65D2543/00361—Dome-like placed on a tray like container
-
- 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
- B65D2543/00—Lids or covers essentially for box-like containers
- B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
- B65D2543/00444—Contact between the container and the lid
- B65D2543/00453—Contact between the container and the lid in a peripheral U-shaped channel of the container
Definitions
- the invention relates to a method of manufacturing a box comprising at least three at least partially rigid side flaps, said at least three side flaps being obtained by folding at least one first sheet.
- Such a box can be intended for packaging products or various articles, which do not need, like tin cans, to constitute an airtight package.
- Metal boxes are usually made from a sheet of tinplate of common thickness ranging from 0.20 mm to 0.30 mm, which sheet can be decorated either by means of offset printing or by embossing, the embossing providing relief elements, additional shapes and textures.
- Such boxes have certain drawbacks: they are light in weight, they lack rigidity in their walls which float, sink or even deform when the box is gripped, and they have a sound of the “hollow shell” type. These drawbacks give the consumer an image of the box as opposed to the luxurious image given to the product it contains, which devalues the product in the eyes of the consumer.
- the document US 3,142,406 describes a box comprising at least three at least partially rigid side flaps, in which said at least three side flaps comprise a sandwich structure comprising at least two metal outer sheets, and a securing material disposed between the two sheets, the securing material being distributed substantially over the entire surface of each of said side flaps
- a box comprising at least three at least partially rigid side flaps, said at least three side flaps being obtained by folding at least one first sheet, the first sheet being metallic, and by the shaping of at least one second sheet, the shaping step comprising a step of folding said second sheet, the second sheet being metallic.
- the invention relates to a method as defined by claim 1.
- the method solves the problems of deformation and of the hollow shell which would be obtained by securing two sheets affixed one against the other and crimped together.
- the method comprises a final step of rolling at least one edge of said sandwich structure.
- the method makes it possible to achieve wall stiffness levels comparable to those achieved with walls made of wood or injected plastic.
- the figure 1 shows a box 1 which is in two parts: a bottom 2, formed by a rectangular tray and a cover 3 in the form of a pyramid also with rectangular section, the end 4 of which has been truncated.
- the cover 3 is associated with the bottom 2 by inserting a free lower edge 5 in a groove 6 made in the bottom 2 running along its peripheral edge 7.
- the cover 3 of the box 1 comprises four side flaps 8 (therefore at least three side flaps according to the invention), and a top flap 9 whose edges 10 are integral with the upper edges 11 of each of the side flaps 8.
- the side flaps 8 are obtained by folding a sheet along three edges 12, the fourth stop 12 being obtained by joining two side edges 13 free of side flaps 8.
- folding should be understood to mean any folding made with the sheet: thus, a folding can make it possible to obtain two side flaps, or more, if the folding is carried out at a certain distance from the edge of the sheet. But folding can also make it possible to obtain crimping: this is achieved by folding the sheet along one of its edges, this folding being called “rolling”. The edges of two sheets folded by rolling can then be nested one in the other and crimped by crushing the rolled edges inserted one into the other.
- the top flap 9 is obtained by cutting an embossed metal sheet and it is attached to the top of the pyramid formed by the side flaps 8.
- Each of the side flaps 8, as well as the top flap 9, is produced by a sandwich structure 13 which will now be described with reference to figures 2.1 to 2.6 : Initially, the sandwich structure 13 is made large enough to form the sheet which will form the four side flaps 8.
- the sandwich structure 13 comprises at least two outer layers 14 enclosing a central layer 15.
- the central layer 15 is a single layer (see examples of figures 2.1 to 2.5 ) or a multilayer structure, as shown in figure 2.6 .
- At least one of the outer layers 14 is a metal foil 16.
- the second outer layer 14 is also a metal foil 16.
- the second outer layer 14 can also be a plastic sheet 17 ( figure 2.3 ), a cardboard plate 18 ( figure 2.2 ) or any other rigid material forming a thin plate 19 ( figure 2.1 ).
- the term “thin plate” will be understood to mean a plate the thickness of which does not exceed 0.5 mm.
- the term “rigid” will be understood to mean a material which is difficult to deform under the action of manual pressure (as opposed to a flexible material).
- the inner layer 15 is a material ensuring the joining of the two outer layers 14.
- the securing material may be an adhesive material 20 (see figures 2.1 to 2.4 ) or an elastic material 21 such as rubber (see figure 2.5 ).
- the elastic material can be introduced by injection of material between the two outer layers.
- the sandwich structure 13 comprises an outer metal layer 16 (between 0.2 and 0.4 mm), an inner layer of adhesive material 20 and a second outer layer of thin plate 19 ( figure 2.1 ), we obtain a side flap 8 having a higher weight and rigidity compared to a side flap consisting only of a metal sheet 16, without however lose the ability to decorate and emboss the standard side flaps.
- the higher rigidity of the side flap greatly limits the deformations when handling the box by exerting pressure on the side flaps, as well as the clicking noises normally observed during this deformation.
- the increase in the weight of boxes is perceived as a statutory advantage in certain markets.
- a side flap 8 is obtained having a higher rigidity compared to a side flap consisting only of a metal foil 16. This higher rigidity limits deformation during handling and also clicking noises.
- the inner layer 15 When the inner layer 15 is in the form of a sandwich structure, it may comprise two layers of adhesive material distributed on either side of a layer of plastic material 17 forming an insert. This assembly makes it possible to further increase the rigidity and the weight of the side flap.
- the inner layer 15 (simple or sandwich structure) trapped between the two outer layers is distributed over substantially the entire surface of each of the side flaps 8. In this way, there is no side flap part 8 where the two outer layers 14 of the sandwich structure would face each other with a void between them.
- the sandwich structure of the side flap gives it a certain rigidity, because the rigidity of the layers is imposed from one layer to another.
- the figure 3 shows the steps in the production of side flaps of a square section enclosure.
- the sandwich structure 13 which was chosen to produce the side flaps is the one comprising two metal layers 16 joined together by a layer of adhesive material, for each of the side flaps 8.
- a first metal sheet 16 shown in step a) is first of all shaped, that is to say that it is cut according to predetermined dimensions and optionally embossed in order to give it a relief which is at the same time. both decorative and stiffening.
- second metal sheets 16 are also shaped in parallel: they are cut according to dimensions different from those of the first sheet, the dimensions of the second sheets corresponding substantially to the dimensions of each of the side flaps 8.
- the second sheets 16 are also optionally. embossed. If they are, they have the same embossing as that of the first metal sheet 16.
- the second metal sheets will constitute, after completion of the side flaps 8, the internal face of the side flap.
- a layer of adhesive material is applied to four zones 22.
- the areas and shape of the four zones 22 correspond to the areas of the four second sheets 16.
- the application of the layer of adhesive material is carried out by the operator. depositing a bead of adhesive material which spreads out in a serpentine pattern over all of each of the zones 22 on the first metal sheet 16.
- the deposit of a bead of material spread out in a serpentine ensures the evacuation of any bubbles of air between the first metal foil 16 and each of the second metal foil 16.
- Step b) consists in positioning each of the four second metal sheets 16 on each of the four zones 22 and exerting pressure on the four second sheets so that the coil of adhesive material spreads out in each of the four zones. between the first metal sheet and the four second metal sheets.
- a sandwich structure 13 shown in step c) is then obtained, according to which the first sheet and the second metal sheets are joined together.
- the first metal sheet 16 is then folded along three straight lines D1, D2 and D3, located between the second metal sheets 16, corresponding to three ridges delimiting the edges of the side flaps 8.
- a side wall of the box is thus obtained with a square section (see step d).
- the fourth stop is obtained by joining the two free edges of the metal sheet 16 which face each other after folding. This joining is carried out by any means known to those skilled in the art: welding, crimping, etc.
- each of the free edges 23 of the side flaps are rolled to crimp the metal sheets together.
- the rolling step could also be carried out before the step of folding the first sheet without departing from the scope of the invention.
- the rolling could also be carried out on one edge of one of the two metal sheets, not to crimp the metal sheets together, but to crimp the side flaps with the top flap 9, for example, without depart from the scope of the invention.
- the figure 4 shows the steps for making the side flaps 8 of the box illustrated in figure 1 .
- the side flaps 8 are also produced by a sandwich structure comprising a first outer layer forming the outer wall of the side flap, and a second outer layer forming the inner wall of the side flap.
- the inner and outer walls are each made from a metal sheet 16 embossed flat, then volume (step not shown).
- An adhesive material 20 is then applied to the side flaps in the form of a bead extending in a serpentine pattern over the entire surface of the side flap (step i).
- the two truncated pyramids are inserted by force to form the front flaps of box 1 of the figure 1 (step ii).
- the free edges 5 of the side flaps are then rolled in order to ensure the crimping of the metal sheets 16 between them (see, for example, the rolled edge bearing the reference 5 on the figure 1 ).
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Description
L'invention concerne un procédé de fabrication d'un coffret comportant au moins trois volets de flanc au moins partiellement rigides, lesdits au moins trois volets de flanc étant obtenus par pliage d'au moins une première feuille.The invention relates to a method of manufacturing a box comprising at least three at least partially rigid side flaps, said at least three side flaps being obtained by folding at least one first sheet.
Elle vise également un coffret obtenu par le procédé conforme à l'invention.It also relates to a box obtained by the process in accordance with the invention.
Un tel coffret peut être destiné au conditionnement de produits ou d'articles divers, lesquels n'ont pas besoin, comme les boîtes de conserves, de constituer un emballage étanche.Such a box can be intended for packaging products or various articles, which do not need, like tin cans, to constitute an airtight package.
Pour conditionner des produits fragiles (bouteilles de vin ou spiritueux) ou des produits de luxe (parfums, bijoux), il est prévu de réaliser des coffrets aux parois rigides, comme par exemple des coffrets aux parois métalliques, afin de mieux les protéger ou de les présenter de façon prestigieuse.To condition fragile products (bottles of wine or spirits) or luxury products (perfumes, jewelry), it is planned to make boxes with rigid walls, such as boxes with metal walls, in order to better protect them or to protect them. present them in a prestigious way.
Les coffrets métalliques sont usuellement réalisés à partir d'une feuille de fer blanc d'épaisseur courante allant de 0,20 mm à 0,30 mm, laquelle feuille peut être décorée soit au moyen d'une impression offset soit par embossage, l'embossage apportant des éléments en relief, des formes et des textures additionnels.Metal boxes are usually made from a sheet of tinplate of common thickness ranging from 0.20 mm to 0.30 mm, which sheet can be decorated either by means of offset printing or by embossing, the embossing providing relief elements, additional shapes and textures.
La construction et l'assemblage de différentes parties métalliques du coffret est basée sur des procédés de sertissage et /ou d'agrafage purement mécaniques tels que ceux décrits dans la demande
De tels coffrets présentent certains inconvénients : ils présentent un poids léger, ils manquent de rigidité au niveau de leurs parois qui flottent, s'enfoncent voire se déforment lors de la préhension du coffret, et ils présentent une sonorité de type « coque creuse ». Ces inconvénients donnent au consommateur une image du coffret à l'opposé de l'image luxueuse que l'on donne au produit qu'il contient, ce qui dévalorise le produit aux yeux du consommateur.Such boxes have certain drawbacks: they are light in weight, they lack rigidity in their walls which float, sink or even deform when the box is gripped, and they have a sound of the “hollow shell” type. These drawbacks give the consumer an image of the box as opposed to the luxurious image given to the product it contains, which devalues the product in the eyes of the consumer.
On connait également des coffrets ou boîtes dont les parois comprennent plusieurs couches, décrits par exemple dans les documents
Le document
On connait enfin le document
Il décrit un.procédé de fabrication d'un coffret comportant au moins trois volets de flanc au moins partiellement rigides, lesdits au moins trois volets de flanc étant obtenus par pliage d'au moins une première feuille, la première feuille étant métallique, et par la mise en forme d'au moins une seconde feuille, l'étape de mise en forme comportant une étape de pliage de ladite seconde feuille, la seconde feuille étant métallique.It describes un.procédé manufacturing a box comprising at least three at least partially rigid side flaps, said at least three side flaps being obtained by folding at least one first sheet, the first sheet being metallic, and by the shaping of at least one second sheet, the shaping step comprising a step of folding said second sheet, the second sheet being metallic.
L'invention concerne un procédé tel que défini par la revendication 1.The invention relates to a method as defined by claim 1.
Ainsi mis en œuvre, le procédé résout les problèmes de déformation et de coque creuse qui seraient obtenues par solidarisation de deux feuilles apposées l'une contre l'autre et serties ensemble.Implemented in this way, the method solves the problems of deformation and of the hollow shell which would be obtained by securing two sheets affixed one against the other and crimped together.
De préférence, le procédé comporte une ultime étape de roulage d'au moins un bord de ladite structure sandwich.Preferably, the method comprises a final step of rolling at least one edge of said sandwich structure.
En outre, le procédé permet d'atteindre des niveaux de rigidité des parois comparables à celles atteintes avec des parois réalisées en bois ou en plastique injecté.In addition, the method makes it possible to achieve wall stiffness levels comparable to those achieved with walls made of wood or injected plastic.
Le procédé conforme à l'invention peut également comprendre les caractéristiques suivantes, prises séparément ou en combinaison :
- l'étape de mise en forme peut comporter une étape de découpe de ladite seconde feuille ;
- le matériau de solidarisation peut comporter une matière adhésive ;
- le matériau de solidarisation peut comporter une matière élastique.
- the shaping step may include a step of cutting said second sheet;
- the securing material may include an adhesive material;
- the securing material may include an elastic material.
Pour pouvoir être exécutée, l'invention est exposée de façon suffisamment claire et complète dans la description suivante qui est, en plus, accompagnée de dessins dans lesquels :
- La
figure 1 est une vue en perspective d'un coffret conforme à un mode de réalisation selon l'invention, - Les
figures 2.1 à 2.6 sont des vues en coupes de différentes parois de coffrets selon l'invention, - La
figure 3 montre différentes étapes a) à d) d'un premier procédé de fabrication d'un coffret ne faisant pas partie de l'invention, chaque étape a) à d) étant illustrée par un ou plusieurs éléments d'un coffret montrés en perspective ; - Et la
figure 4 montre deux étapes i) et ii) d'un second procédé de fabrication d'un coffret selon l'invention, chaque étape i) et ii) étant illustrée par un ou plusieurs éléments d'un coffret conforme à l'invention montrés en perspective.
- The
figure 1 is a perspective view of a box according to an embodiment according to the invention, - The
figures 2.1 to 2.6 are sectional views of different enclosure walls according to the invention, - The
figure 3 shows different steps a) to d) of a first method of manufacturing a box not forming part of the invention, each step a) to d) being illustrated by one or more elements of a box shown in perspective; - And the
figure 4 shows two steps i) and ii) of a second method of manufacturing a box according to the invention, each step i) and ii) being illustrated by one or more elements of a box according to the invention shown in perspective .
Dans la description qui suit, les termes « inférieur », « supérieur », « haut », « bas » etc... sont utilisés en référence aux dessins pour une plus grande facilité de compréhension. Ils ne doivent pas être compris comme étant des limitations de la portée de l'invention.In the description which follows, the terms “lower”, “upper”, “upper”, “lower” etc. are used with reference to the drawings for greater ease. understanding. They should not be understood as being limitations on the scope of the invention.
L'exemple qui va maintenant être décrit fait référence à un coffret dont les parois sont au moins partiellement métalliques.The example which will now be described refers to a cabinet the walls of which are at least partially metallic.
La
Le couvercle 3 s'associe au fond 2 par insertion d'un bord inférieur libre 5 dans une gorge 6 ménagée dans le fond 2 courant le long de son bord périphérique 7.The cover 3 is associated with the bottom 2 by inserting a free
Le couvercle 3 du coffret 1 comprend quatre volets de flanc 8 (donc au moins trois volets de flancs conformément à l'invention), et un volet sommital 9 dont les bords 10 sont solidaires des bords supérieurs 11 de chacun des volets de flanc 8.The cover 3 of the box 1 comprises four side flaps 8 (therefore at least three side flaps according to the invention), and a top flap 9 whose
Les volets de flanc 8 sont obtenus par pliage d'une feuille le long de trois arrêtes 12, la quatrième arrête 12 étant obtenu en solidarisant deux bords 13 latéraux libres de volets de flanc 8.The
On devra comprendre par « pliage » tout pliage réalisé avec la feuille : ainsi, un pliage peut permette d'obtenir deux volets de flanc, ou plus, si le pliage est réalisé à une certaine distance du bord de la feuille. Mais le pliage peut également permettre d'obtenir un sertissage : ceci est réalisé par un pliage de la feuille le long d'un de ses bords, ce pliage étant appelé « roulage ». Les bords de deux feuilles pliées par roulage pouvant alors être imbriqués l'un dans l'autre et sertis par écrasement des bords roulés insérés l'un dans l'autre.The term “folding” should be understood to mean any folding made with the sheet: thus, a folding can make it possible to obtain two side flaps, or more, if the folding is carried out at a certain distance from the edge of the sheet. But folding can also make it possible to obtain crimping: this is achieved by folding the sheet along one of its edges, this folding being called “rolling”. The edges of two sheets folded by rolling can then be nested one in the other and crimped by crushing the rolled edges inserted one into the other.
Ainsi, quand il sera fait référence à plusieurs volets de flanc obtenus par pliage d'au moins une première feuille, on devra comprendre que lesdits plusieurs volets de flanc peuvent être obtenus soit en pliant un feuille suivant plusieurs droites, soit en pliant les bords de plusieurs feuilles et en les reliant entre elles (par exemple par sertissage).Thus, when reference will be made to several side flaps obtained by folding at least one first sheet, it should be understood that said several side flaps can be obtained either by folding a sheet along several straight lines, or by folding the edges of several sheets and connecting them together (for example by crimping).
Le volet sommital 9 est obtenu par découpe d'une feuille métallique embossée et il est rapporté au sommet de la pyramide formée par les volets de flanc 8.The top flap 9 is obtained by cutting an embossed metal sheet and it is attached to the top of the pyramid formed by the
Chacun des volets de flanc 8, ainsi que le volet sommital 9, est réalisé par une structure sandwich 13 qui va maintenant être décrite en faisant référence aux
Initialement la structure sandwich 13 est réalisée suffisamment grande pour former la feuille qui formera les quatre volets de flanc 8.Each of the
Initially, the
La structure sandwich 13 comporte au minimum deux couches extérieures 14 enfermant une couche centrale 15.The
La couche centrale 15 est une couche simple (voir exemples des
L'une au moins des couches 14 extérieure est une feuille métallique 16.At least one of the
Dans l'exemple illustré sur la
La seconde couche extérieure 14 peut également être une feuille plastique 17 (
Lorsqu'elle est simple, la couche intérieure 15 est un matériau assurant la solidarisation des deux couches extérieures 14.When it is simple, the
Le matériau de solidarisation peut être une matière adhésive 20 (voir
La matière élastique peut être introduite par injection de matière entre les deux couches extérieures.The elastic material can be introduced by injection of material between the two outer layers.
Lorsque la structure sandwich 13 comprend une couche extérieure métallique 16 (entre 0.2 et 0.4 mm), une couche intérieure en matière adhésive 20 et une seconde couche extérieure en plaque mince 19 (
Il en va de même pour la structure sandwich représentée en
Lorsque la structure sandwich 13 comprend une couche extérieure métallique 16 (entre 0.2 et 0.4 mm), une couche de matière adhésive et une plaque cartonnée, on obtient un volet de flanc 8 présentant une rigidité plus élevée par rapport à un volet de flanc constitué uniquement d'une feuille métallique 16. Cette rigidité plus élevée limite les déformations lors de la prise en mains et les bruits de cliquetis également.When the
Lorsque la couche intérieure 15 se présente sous la forme d'une structure sandwich, elle peut comprendre deux couches de matière adhésive réparties de part et d'autre d'une couche de matière plastique 17 formant un insert. Cet assemblage permet encore d'augmenter la rigidité et le poids du volet de flanc.When the
La couche intérieure 15 (simple ou structure sandwich) emprisonnée entre les deux couches extérieures se répartit sur sensiblement toute la surface de chacun des volets de flancs 8. De cette façon, il n'existe pas de partie de volet de flanc 8 où les deux couches extérieures 14 de la structure sandwich se feraient face avec du vide entre elles.The inner layer 15 (simple or sandwich structure) trapped between the two outer layers is distributed over substantially the entire surface of each of the side flaps 8. In this way, there is no
Ainsi, la structure sandwich du volet de flanc lui procure une rigidité certaine, car la rigidité des couches s'impose d'une couche à l'autre.Thus, the sandwich structure of the side flap gives it a certain rigidity, because the rigidity of the layers is imposed from one layer to another.
Dans tous les exemples de structures sandwich décrites, la modulation des épaisseurs des deux couches extérieures permet d'ajuster ces différents paramètres au mieux des enjeux économiques et d'éco conception.In all the examples of sandwich structures described, the modulation of the thicknesses of the two outer layers makes it possible to adjust these different parameters to the best of economic and eco-design issues.
Il va maintenant être fait référence à deux procédés de fabrication en faisant référence aux
La
La structure sandwich 13 qui a été choisie pour réaliser les volets de flanc est celle comportant deux couches métalliques 16 solidarisées par une couche de matière adhésive, pour chacun des volets de flanc 8.The
Une première feuille métallique 16 montrée à l'étape a) est tout d'abord mise en forme, c'est-à-dire qu'elle est découpée suivant des dimensions prédéterminées et éventuellement embossée afin de lui donner un relief qui est à la fois décoratif et rigidifiant.A
Quatre secondes feuilles métalliques 16 sont parallèlement également mises en forme : elles sont découpées suivant des dimensions différentes de celles de la première feuille, les dimensions des secondes feuilles correspondant sensiblement aux dimensions de chacun des volets de flanc 8. Les secondes feuilles 16 sont également éventuellement embossées. Si elles le sont, elles présentent le même embossage que celui de la première feuille métallique 16.Four
Les secondes feuilles métalliques vont constituer, après réalisation des volets de flanc 8, la face interne du volet de flanc.The second metal sheets will constitute, after completion of the side flaps 8, the internal face of the side flap.
Sur la première feuille métallique 16, une couche de matière adhésive est appliquée sur quatre zones 22. Les aires et la forme des quatre zones 22 correspondent aux aires des quatre secondes feuilles 16. L'application de la couche de matière adhésive est réalisée par le dépôt d'un cordon de matière adhésive qui s'étale en serpentin sur l'ensemble de chacune des zones 22 sur la première feuille métallique 16. La dépose d'un cordon de matière étalé en serpentin assure l'évacuation d'éventuelles bulles d'air entre la première feuille métallique 16 et chacune des secondes feuilles métalliques 16.On the
L'étape b) consiste à positionner chacune des quatre secondes feuilles métalliques 16 sur chacun des quatre zones 22 et d'exercer une pression sur les quatre secondes feuilles de façon à ce que le serpentin de matière adhésive s'étale dans chacune des quatre zones entre la première feuille métallique et les quatre secondes feuilles métalliques.Step b) consists in positioning each of the four
On obtient alors une structure sandwich 13 représentée à l'étape c), suivant laquelle la première feuille et les secondes feuilles métalliques sont solidarisées entre elles.A
La première feuille métallique 16 est alors pliée suivant trois droites D1, D2 et D3, situées entre les secondes feuilles métalliques 16, correspondant à trois arrêtes délimitant les bords des volets de flanc 8.The
On obtient ainsi une paroi latérale de coffret se section carrée (voir étape d). La quatrième arrête est obtenue en solidarisant les deux bords libres de la feuille métallique 16 qui se sont face après le pliage. Cette solidarisation est réalisée par tout moyen connu de l'homme du métier : soudure, sertissage, etc.A side wall of the box is thus obtained with a square section (see step d). The fourth stop is obtained by joining the two free edges of the
Enfin, chacun des bords libres 23 des volets de flanc sont roulés pour sertir les feuilles métalliques entre elles.Finally, each of the
L'étape de roulage pourrait également être réalisée avant l'étape de pliage de la première feuille sans sortir du cadre de l'invention.The rolling step could also be carried out before the step of folding the first sheet without departing from the scope of the invention.
Il devra être compris que le roulage pourrait également être réalisé sur un bord de l'une des deux feuilles métalliques, non pas pour sertir les feuilles métalliques entre elles, mais pour sertir les volets de flanc avec le volet sommital 9, par exemple, sans sortir du cadre de l'invention.It should be understood that the rolling could also be carried out on one edge of one of the two metal sheets, not to crimp the metal sheets together, but to crimp the side flaps with the top flap 9, for example, without depart from the scope of the invention.
La
Suivant ce mode de réalisation, les volets de flanc 8 sont également réalisés par une structure sandwich comportent une première couche extérieur formant la paroi extérieure du volet de flanc, et une seconde couche extérieur formant la paroi intérieure du volet de flanc.According to this embodiment, the side flaps 8 are also produced by a sandwich structure comprising a first outer layer forming the outer wall of the side flap, and a second outer layer forming the inner wall of the side flap.
Pour réaliser des volets de flanc 8 formant un tronc de pyramide de section rectangulaire, les parois intérieure et extérieure sont réalisées chacune à partir d'une feuille métallique 16 embossée à plat, puis mise en volume (étape non montrée).To produce
Une matière adhésive 20 est alors appliquée sur les volets de flancs sous la forme d'un cordon s'étalant en serpentin sur l'ensemble de la surface du volet de flanc (étape i).An
Les deux troncs de pyramides sont insérés à force pour former les volets de face du coffret 1 de la
Les bords libres 5 des volets de flancs sont alors roulés afin d'assurer le sertissage des feuilles métalliques 16 entre elles (voir, par exemple, le bord roulé portant la référence 5 sur la
On comprend de la description qui précède comment l'invention permet d'obtenir un coffret plus rigide et, d'apparence, plus résistant que ceux obtenus par les procédés de l'état de la technique.It will be understood from the above description how the invention makes it possible to obtain a case that is more rigid and, in appearance, more resistant than those obtained by the methods of the state of the art.
Claims (5)
- A method for manufacturing a box (1) including at least three at least partially rigid side flaps (8), said at least three side flaps (8) being obtained by folding at least one first sheet (16), said first sheet being of metal, and by shaping at least one second sheet (16-19), the shaping step includes a step of folding (i) said second sheet (16-19), said at least one second sheet (16-19) being of metal,
said method being characterised in that it includes the following steps of:before folding said at least one first and second metal sheets:- embossing or offset printing said first metal sheet,- embossing or offset printing said second metal sheet,and after folding said at least first and second metal sheets:- applying a layer of a securing material (20; 21) to a surface of at least one part of said first sheet,- positioning said at least one second sheet (16-19) on said part of said first sheet (16) covered with said securing material (20; 21), in order to obtain a sandwich structure (13), the securing material being an internal layer (15) providing securing of two external layers (14), said two external layers being said first and second metal sheets (16, 16-19). - The method according to claim 1, characterised in that it includes a last step of curling at least one edge (5; 23) of said sandwich structure (13).
- The method according to claim 1 or 2, wherein the shaping step includes a step of cutting (b) said second sheet (16-19).
- The method according to any of the preceding claims, wherein the securing material (20; 21) includes an adhesive material (20).
- The method according to any of claims 1 to 3, wherein the securing material (20; 21) includes an elastic material (21) .
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/FR2014/050208 WO2015118231A1 (en) | 2014-02-04 | 2014-02-04 | Method for manufacturing a box and box obtained by said method |
Publications (2)
Publication Number | Publication Date |
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EP3102495A1 EP3102495A1 (en) | 2016-12-14 |
EP3102495B1 true EP3102495B1 (en) | 2021-08-11 |
Family
ID=50231449
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP14708078.2A Active EP3102495B1 (en) | 2014-02-04 | 2014-02-04 | Method for manufacturing a box and box obtained by said method |
Country Status (3)
Country | Link |
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EP (1) | EP3102495B1 (en) |
CN (1) | CN106163934B (en) |
WO (1) | WO2015118231A1 (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3142406A (en) * | 1958-09-22 | 1964-07-28 | Skydyne Inc | Case |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR766947A (en) * | 1933-02-06 | 1934-07-06 | Maunoury & Cie | Further training in the manufacture of boxes or folding packaging |
US2994465A (en) * | 1960-04-14 | 1961-08-01 | Foils Packaging Corp | Ice cream containers |
US3064874A (en) * | 1961-07-18 | 1962-11-20 | Foils Packaging Corp | Food container |
FR1474812A (en) * | 1966-01-05 | 1967-03-31 | Carnaud & Forges | Estagnon in the shape of a trunk of a pyramid, especially for frozen eggs |
US3666164A (en) * | 1970-07-15 | 1972-05-30 | Packaging Corp America | Container and cover therefor |
US3754456A (en) * | 1971-05-27 | 1973-08-28 | Reynolds Metals Co | Blank constructions for hermetically sealed cartons and methods of forming same |
FR2369167A1 (en) | 1976-10-27 | 1978-05-26 | Massilly Usine Metallurg | Box made from prepared sheet of metal - has cut=outs at corner locations which enable box to be formed manually |
SE455773B (en) * | 1984-11-22 | 1988-08-08 | Tetra Pak Ab | Laminated container material of improved properties |
CN2175739Y (en) * | 1993-05-11 | 1994-08-31 | 黄岩蜜饯厂 | Paper-plastic drink box |
US5746871A (en) * | 1995-08-10 | 1998-05-05 | Graphic Packaging Corporation | Method for forming carton blanks |
CN2651174Y (en) * | 2003-08-29 | 2004-10-27 | 陈坤杰 | Metallic foil-plastic thin-membrane composite structured packing materials |
CN201816255U (en) * | 2010-04-15 | 2011-05-04 | 魏宝华 | Composite aluminium plate specially used for gift box |
-
2014
- 2014-02-04 CN CN201480074932.9A patent/CN106163934B/en active Active
- 2014-02-04 WO PCT/FR2014/050208 patent/WO2015118231A1/en active Application Filing
- 2014-02-04 EP EP14708078.2A patent/EP3102495B1/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US3142406A (en) * | 1958-09-22 | 1964-07-28 | Skydyne Inc | Case |
Also Published As
Publication number | Publication date |
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EP3102495A1 (en) | 2016-12-14 |
CN106163934B (en) | 2019-10-22 |
CN106163934A (en) | 2016-11-23 |
WO2015118231A1 (en) | 2015-08-13 |
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