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
  • B65D5/42—Details of containers or of foldable or erectable container blanks
  • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
  • B65D5/441—Reinforcements
  • B65D5/445—Reinforcements formed separately from the container
  • B65D5/448—Metal or wire reinforcements
• • 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
  • B65D5/0254—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 with end closures formed by inward folding of flaps and securing them by means of a tongue integral with one of the flaps
• • 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
  • B65D5/42—Details of containers or of foldable or erectable container blanks
  • B65D5/4212—Information or decoration elements, e.g. content indicators, or for mailing
• • 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
  • B65D5/42—Details of containers or of foldable or erectable container blanks
  • B65D5/44—Integral, inserted or attached portions forming internal or external fittings
  • B65D5/441—Reinforcements
  • B65D5/445—Reinforcements formed separately from the container
  • B65D5/446—Wooden reinforcements

Definitions

• the invention relates to a case produced by folding a complex comprising a sheet of flexible and thin material and a sheet of rigid and thick material, a blank intended for the production of such a case, as well as a method for producing 'such a blank.
• Document WO 02/00424 discloses packages obtained after folding a plate formed by stacking a layer of flexible material and a rigid layer. To allow its folding, the plate has a groove made in the rigid layer and whose height is equal to the thickness of the rigid layer.
• This type of closure is complex to produce for a package comprising a rigid layer and does not allow it to be kept firmly closed.
• Document EP-A-0 709 293 also discloses a box comprising a closure panel.
• a tongue separated from the panel by a fold line comprises openings which hooks provided on foldable legs pass through when the box is closed.
• this type of closure requiring the deformation of the hooks to open the box, is not suitable for packaging comprising a rigid layer unless the packaging is damaged.
• the invention aims to allow the production of a package comprising a layer of flexible material and a rigid layer which can be closed and held firmly in the closed state using the rigidity of the rigid layer.
• the invention relates to a case produced by folding a complex, said complex comprising a sheet of flexible and thin material such as cardboard or plastic material on which is associated a sheet of rigid material. and thick such as wood or metal, said case comprising: - a body comprising side panels including at least one front panel and one rear panel, - at least one first opening defined by said side panels, some of the edges of said opening bearing each a side tab folded at right angles to a side panel of the case along a fold line, said side tabs having a rigid recess near said fold line and projecting towards the front panel of the case, said case further comprising at least one tab for closing the opening at one of the ends of the body, said tab for closing comprising a purlin at the opening / closing hinged to the rear panel along a fold line, said opening / closing panel comprising, at its end opposite the fold line, a foldable re-entrant tab at right angles to said opening panel / closure along a fold line substantially parallel to
• the invention relates to a blank, intended for the production of a case as described above, this blank being produced in a complex comprising a sheet of flexible and thin material such as cardboard or plastic material on which is associated with a sheet of rigid and thick material such as wood or metal, said blank comprising: - side panels, including at least one front panel and one rear panel, separated by fold lines and defining by folding the body of the case, - side tabs adjacent to and articulated to some of the side panels by fold lines, - a bonding tab adjacent to the front panel and hinged thereto by a fold line substantially parallel to the lines folds separating the side panels, said blank further comprising an open / close panel adjacent to the rear panel and articulated to said rear panel by a fold line, ledi t opening / closing panel comprising at its end opposite the fold line a re-entrant tab, said tab being articulated to the opening / closing panel by a fold line substantially parallel to the fold line, the fold line comprising in its extreme parts a removal of
• the invention relates to a process for producing a blank as described above, said process comprising the following steps: - production of a complex by association of a sheet of flexible and thin material such as cardboard or plastic material and a sheet of rigid and thick material such as wood or metal; - cutting the complex so as to form the side panels, the closing tab, the bonding tab and the side tabs; - production of fold lines by cutting the sheet of rigid material only; - Cutting the sheet of rigid material near the material removed, said cut extending partially on the opening / closing panel and on the re-entrant tab; - removal of material by complete cutting of the complex.
• FIG. 1 is a plan view of the internal face of a blank according to an embodiment of the invention.
• FIG. 2 is a perspective view of a case with its closing tab open, resulting from the setting up of the blank according to FIG. 1.
• a blank 1 is produced made from a complex comprising a sheet of flexible and thin material, such as cardboard or plastic material and a sheet of rigid and thick material, such as wood or metal.
• sheet of flexible and thin material means a sheet made of a material whose nature and thickness allow the deformation of the sheet.
• sheet of rigid and thick material is meant a sheet made of a material whose nature and thickness limit the deformation of the sheet.
• the thickness of the sheet of flexible material is of the order of a few tenths of a millimeter and that of the sheet of rigid material is of the order of twice that of the sheet of flexible material.
• the internal face 3 of the blank 1 is defined as being the face of the blank which will be inside the case 2 when the blank is set in volume, the external face 4 forming the visible face of the case 2 when this one is formed.
• the sheet of flexible and thin material forms the internal face 3 of the blank 1 and the sheet of rigid material forms the external face 4. This thus gives the case 2 an external appearance of a particular aesthetic according to the material chosen for the rigid material sheet. It is also possible to print various information on the external face 4, for example a logo or the like.
• the blank 1 comprises side panels, at least one of which is a front panel 5 and a rear panel 6.
• a first side panel 7 is articulated to the rear panel 6 by a fold line 8.
• a second side panel 9 is articulated to the rear panel 6 by a fold line 10
• the second side panel 9 is articulated to the front panel 5 by a fold line 11.
• All of the side panels 5, 6, 7 and 9 define the body 36 of the case of generally cylindrical shape, for example substantially parallelepiped, when the blank 1 is set in volume. According to other embodiments not shown, it is possible to envisage interposing additional side panels between the front panels 5 rear 6, in order to produce cases of different shapes. Furthermore, provision may be made for at least one side panel 5, 6, 7 and / or 9 to include an opening produced by cutting the complex.
• the side panels are substantially polygonal, for example rectangular, and the fold lines separating the side panels are substantially parallel to each other. However, it is possible to provide the panels with a trapezoidal shape so as to form a case having an inclined opening.
• a bonding tab 12 is articulated to the front panel 5 along a fold line 13 substantially parallel to the fold lines 8, 10 and 11.
• An opening / closing panel 14 is adjacent to the rear panel 6 and hinged thereto along a fold line 15 substantially perpendicular to the fold lines separating the side panels.
• the opening / closing panel 14 has a substantially rectangular shape, the length of the long side of which corresponds substantially to the length of the short sides of the side panels 7 and 9.
• a re-entrant tab 16 is articulated to the opening / closing panel 14 at its end opposite the fold line 15.
• the re-entering tab 16 is foldable at right angles to the opening / closing panel 14 along a fold line 17 substantially parallel to the fold line 15.
• the opening / closing panel 14 and re-entering tab 16 assembly forms a closing tab intended to close the case 2 when the blank 1 is set in volume.
• the fold line 17 comprises at each of its end portions a removal of material 18.
• These removals of material 18 consist of complete cuts of the complex comprising the sheet of flexible material and the sheet of rigid material. The cuts being made through each of the sheets of the complex, the edges of the material removals 18 have a certain rigidity and a certain thickness. They extend along the fold line 17 towards the center of the closure tab, and have small dimensions relative to the length of the fold line 17.
• the fold line 17 includes a cutout 19 made in the sheet of rigid material only.
• the cutout 19 is substantially perpendicular to the fold line 17 and extends partially on the opening / closing panel 14 on the one hand and on the re-entrant tab 16 on the other hand.
• the cutout 19 marks the end of the material removal 18.
• the cutout 19 further comprises, on the side of the opening / closing panel, a wing 20.
• This wing 20, produced in the sheet of rigid material, is intended to form a substantially perpendicular projection to the opening / closing panel 14 when the re-entrant tab 16 is folded at a right angle to this panel 14, as shown in FIG. 2.
• the cutout 19 makes it possible to stiffen the fold line 17 near the material removals 18. It makes it possible to prevent the removal of material 18 from tearing and "spreading" along the fold line during the handling of the case 2.
• the re-entrant tab 16 may have rounded edges 21 in order to facilitate its insertion when the closure tab is closed.
• Side legs 24 and 25 are adjacent and articulated respectively to opposite edges located on either side of the rear panel 6, for example to the side panels 7 and 9 by fold lines 26 and 27. These side legs extend on the same side as the opening / closing panel 14 and have a substantially trapezoidal shape.
• the fold lines 26 and 27 form the large bases of the trapezoids.
• the lateral tabs 24 and 25 each include a recess, respectively 28 and 29. These recesses 28, 29 comprising a part of the sheet of flexible material and a part of the sheet of rigid material and thick are themselves rigid and thick. These rigid recesses project towards the front panel 5 when the blank 1 is set in volume. Their function will be described in relation to the description of case 2.
• the blank 1 comprises a second closure tab 22 hinged to the rear panel 6 by a fold line 23, on the edge opposite to the fold line 15 of the rear panel 6.
• Legs side 30 and 31 are provided on the sides opposite to the fold lines 26 and 27 of the side panels 7 and 9.
• Fold lines 32 and 33 separate the side tabs 30 and 31 from the side panels 7 and 9.
• These side tabs 30 and 31 also include protruding rigid recesses towards the front panel 5 when the blank 1 is set in volume. All the lines for folding the blank 1 are produced by cutting the sheet of rigid material only and tracing the lines on the sheet of flexible material. This type of cutting is called “half-flesh cutting", only one of the two leaves of the complex being cut.
• the first step of the process consists in producing the complex comprising a sheet of flexible and thin material, such as cardboard or plastic material, and a sheet of rigid and thick material, such as wood or metal or plastic.
• the sheet of rigid material and the sheet of flexible material are combined by fixing the sheet of rigid material to one of the faces of the sheet of flexible material. This fixing is for example ensured by laminating the sheet of rigid material on the sheet of flexible material.
• the complex is then cut so as to form the side panels, the closure tab or tabs, the bonding tab and the side tabs.
• the sheet of rigid material is cut along the fold lines and the fold lines are drawn on the sheet of flexible material. This gives the blank 1 the flexibility necessary for its folding and its volume around the fold lines.
• the case 2 is therefore produced by placing the blank 1 in volume, which is folded along the fold lines. It will be noted that the bonding tab 12 makes it possible to secure the front panel 5 to the side panel 7 so as to maintain the volume formed by the folding of the blank 1.
• the blank 1 is folded so that the sheet of flexible material forms the internal face 3 of the case and the sheet of rigid material forms the external face 4.
• the setting in volume of a blank 1 such as that shown in FIG. 1 forms a case of substantially parallelepipedal shape comprising a body 36 formed by the side panels 5, 6, 7 and 9, two openings, one of which 34 is visible on Figure 2, defined by the edges of the side panels 5, 6, 7 and 9.
• the body of the case may include an opening made by cutting the complex.
• the lateral legs 25 and 24 are folded at right angles to the side panels 7 and 9, so that they partially cover the opening 34.
• the rigid recesses 28 and 29 of these legs then protrude towards the front panel 5 and are located near fold lines 26 and 27.
• the closing tab is folded over the opening 34, so that the opening / closing panel covers this opening when it is desired to close the case 2.
• the dimensions of the opening panel / closure are adapted to correspond to those of opening 34.
• the re-entering tab 16 is folded at right angles to the opening / closing panel 14.
• the tab 16 is inserted between the front panel 5 and the side tabs 24 and 25. This insertion is facilitated by the rounded edges 21 of the re-entrant tab 16.
• the insertion of the re-entrant tab 16 has the effect of making the rigid recesses 28 and 29 penetrate into the material removals 18.
• the rigidity and thickness of the sheet of rigid and thick material gives the recesses 28, 29 and the edges material cuts 18 of sufficient rigidity and thickness to allow a snap of the rigid recesses 28, 29 in the material cuts 18, so that the closed position of the case is firmly maintained and cannot be undone only by manual manipulation of the closing tab.
• the recesses 28, 29 may have a generally trapezoidal shape, the small base being produced on the edge near the front panel 5, and a dimension parallel to the fold lines 27, 26 allowing their insertion in the abutments of material 18 without overshoot.
• the second opening is similarly closed by the second closing tab 22.
• the cutouts 19 protrude substantially perpendicular to the opening / closing panel 14 when the re-entrant tab 16 is folded at right angles to this panel 14, so that the fold line 17 is stiffened near the material removals 18 so to prevent any tearing of this fold line 17 which is subjected to stresses when the case 2 is opened or closed.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Wood Science & Technology (AREA)
• Cartons (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=34400936

Family Applications (1)

Country Status (5)

Families Citing this family (5)

Citations (5)

• 2003
  • 2003-11-03 FR FR0350771A patent/FR2861697B1/fr not_active Expired - Fee Related
• 2004
  • 2004-11-02 WO PCT/FR2004/002815 patent/WO2005044675A1/fr active Application Filing
  • 2004-11-02 EP EP04292588A patent/EP1528002A1/de not_active Withdrawn
  • 2004-11-03 CN CN200410086899.XA patent/CN1616308A/zh active Pending
  • 2004-11-03 US US10/979,803 patent/US20060000879A1/en not_active Abandoned

Patent Citations (5)

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