EP1436205A1 - Packaging having a closed section and method for the production thereof - Google Patents

Packaging having a closed section and method for the production thereof

Info

Publication number
EP1436205A1
EP1436205A1 EP02722356A EP02722356A EP1436205A1 EP 1436205 A1 EP1436205 A1 EP 1436205A1 EP 02722356 A EP02722356 A EP 02722356A EP 02722356 A EP02722356 A EP 02722356A EP 1436205 A1 EP1436205 A1 EP 1436205A1
Authority
EP
European Patent Office
Prior art keywords
sheet
sheets
winding
packaging
mandrel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP02722356A
Other languages
German (de)
French (fr)
Inventor
Bernard Derrien
Jean-Marc Nicolas
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1436205A1 publication Critical patent/EP1436205A1/en
Withdrawn legal-status Critical Current

Links

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
    • B65D3/00—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines
    • B65D3/22—Rigid or semi-rigid containers having bodies or peripheral walls of curved or partially-curved cross-section made by winding or bending paper without folding along defined lines with double walls; with walls incorporating air-chambers; with walls made of laminated material
    • 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
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • 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
    • B31B2120/00—Construction of rigid or semi-rigid containers
    • B31B2120/40—Construction of rigid or semi-rigid containers lined or internally reinforced
    • 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
    • B31B50/26—Folding sheets, blanks or webs
    • B31B50/28—Folding sheets, blanks or webs around mandrels, e.g. for forming bottoms

Definitions

  • the present invention relates to a method of manufacturing a closed section packaging based on sheets incorporating at least one natural material such as wood as well as a closed section packaging made based on sheets incorporating at least a natural material such as wood.
  • Closed section packaging has long been known, such as circular section packaging, such as hollow cylinders, used for example to protect bottles from impact.
  • circular section packaging such as hollow cylinders, used for example to protect bottles from impact.
  • a first solution consists in machining by turning a piece of wood to give it the shape of a tube.
  • This solution is expensive and requires the use of pieces of wood with a diameter at least equal to that of the tube to be manufactured.
  • the object of the invention is therefore to propose a method of manufacturing a closed section packaging based on sheets incorporating at least one natural material such as wood, and which does not require the machining of a workpiece. wood and whose cost price is advantageous.
  • the method of manufacturing a closed section packaging based on sheets formed respectively of a sheet of flexible natural material uscoUé on a support sheet is remarkable in that it consists in winding a first sheet around '' a mandrel, the sheet being positioned with its sheet of natural material facing towards said mandrel so that it can form the internal wall of said packaging, to glue the external wall of the sheet or the internal wall of at least a second sheet, to wrap each sheet to stick it around the first sheet or a previously rolled sheet, the last sheet being positioned with its sheet of natural material turned towards the outside of the mandrel so that it can form the wall outer of the package, the step of winding each sheet taking place in such a way that the starting edge for winding the sheet does not coincide with the bo starting rd of winding of the first sheet or of a sheet previously rolled up.
  • the manufacturing method consists in providing, in addition, a step of winding and gluing a reinforcing sheet between two sheets, the step of winding the reinforcing sheet s operating in such a way that the starting edge for winding the reinforcing sheet does not coincide with the starting edge for winding the sheets.
  • the manufacturing process consists in shifting the winding starting edges of two sheets or sheet (s) of reinforcement intended to be glued to each other, by an angle ⁇ centered on the axis of the mandrel with a value close to: 2 ⁇ / number of sheets and backing sheets.
  • the manufacturing process consists in respectively making perforations through sheets or reinforcement sheet (s), the perforations being centered on the same axis during their winding stages.
  • the manufacturing process also includes providing a step of winding and gluing a sheet of material transparent plastic between two sheets or reinforcement sheet (s) so as to close the perforations.
  • the manufacturing process consists in heating the mandrel to facilitate the winding of reinforcing sheets or sheets around it and to accelerate the drying time of the glue.
  • the manufacturing process consists in establishing the temperature of the mandrel around 40 ° C.
  • the manufacturing process consists in pressing, by a pressing roller, the reinforcing sheets or sheets or transparent plastic sheet during their windings on the mandrel.
  • the manufacturing process consists in maintaining the reinforcing sheets or sheets or transparent plastic sheet around the mandrel, during the time of drying of the adhesive, by clamping means such as strapping .
  • the manufacturing process consists of dipping the packaging in a paraffin bath to give its walls a seal against the outside.
  • the invention also relates to a closed section packaging consisting of sheets respectively formed of a sheet of flexible natural material uscoUé on a support sheet.
  • a closed section packaging consisting of sheets respectively formed of a sheet of flexible natural material uscoUé on a support sheet.
  • Such a packaging is remarkable in that the sheets are glued by their faces in contact, and are arranged relative to each other in such a way that, on the one hand, the starting winding edge of each sheet does not coincide with the starting edge for winding the sheet or another sheet and, on the other hand, that their sheets of natural material respectively constitute the inner and outer walls of the package.
  • the support sheet is a cardboard sheet.
  • the natural material of each sheet of natural material is chosen from wood, cork or leather.
  • the packaging further comprises a reinforcing sheet disposed between two sheets, the starting winding edge of the reinforcing sheet not coinciding with the starting winding edge of the sheets.
  • the reinforcing sheet is a sheet of glass fibers.
  • the reinforcing sheet is a plastic sheet.
  • the angle ⁇ centered on the axis of the packaging and taken between the starting edges of the unwinding of two adjacent sheets or reinforcing sheets has a value close to: 2 ⁇ / number of sheets and backing sheets.
  • the openings of the packaging are respectively closed by a bottom and a cover made of wood.
  • the external wall and / or the bottom or the cover include a marking produced by pyrography.
  • the openings of the packaging are respectively closed by a bottom and a cover made of metal.
  • the reinforcing sheets or sheet (s) respectively comprise perforations centered on the same axis.
  • FIG. . 1a represents a front view of a device for manufacturing a packaging of closed section of circular type according to the invention
  • FIG. lb shows a sectional view of one of the sheets intended for the manufacture of a closed section package according to the invention
  • FIG. 2 shows a front view of a device for manufacturing a packaging of circular section during a step of winding a first sheet according to the method of manufacturing a packaging of circular section according to the invention
  • FIG. 3 shows a front view of a device for manufacturing a packaging of circular section at the end of the step of winding a first sheet according to the method of manufacturing a circular section packaging according to the invention
  • FIG. 4 shows a front view of a device for manufacturing a packaging of circular section during the preparation of the step of winding a second sheet according to the method of manufacturing a packaging of circular section according to the invention
  • Fig. 5 shows a front view of a device for manufacturing a packaging of circular section during the step of winding a second sheet according to the method of manufacturing a packaging of circular section according to the invention
  • FIG. 6 shows a front view of a device for manufacturing a packaging of circular section at the end of the step of winding a second sheet according to the method of manufacturing a packaging of circular section according to invention
  • FIG. 7 shows a perspective view of a circular section packaging produced by the manufacturing method according to the invention
  • FIG. 8 shows a front view of a device for manufacturing a packaging of circular section at the end of the step of winding a sheet covering a reinforcing sheet according to a variant of the operating method of the manufacturing process.
  • a packaging of circular section according to the invention shows a perspective view of a circular section packaging manufactured in a variant of the operating method of the manufacturing process according to the invention
  • FIG. 10 shows a perspective view of a circular section packaging manufactured in another variant of the operating method of the manufacturing method according to the invention.
  • the device 100 for manufacturing a package of closed section notably comprises a mandrel 110 intended to allow the wrapping of sheets F around it. It has for this purpose a pressing roller 120 making it possible to press one or more sheets F or other sheets against the mandrel 110 during their respective windings.
  • the pressing roller 120 can, for this purpose, be kept under pressure against the mandrel 110 by a pressing device (not shown) incorporating a pressure means such as a jack or a spring.
  • the mandrel 110 can be heated by a heating means, not shown, such as an electrical resistance, and which is intended to facilitate the winding of sheets around it.
  • the mandrel 110 and the pressing roller 120 have a cylindrical section making it possible to manufacture packages of cylindrical section.
  • the mandrel has a convex or concave polygonal section.
  • the mandrel 110 and the pressing roller 120 are rotated in opposite directions to each other by a device not shown, and preferably mutually so that their peripheral speeds are substantially equal.
  • a removable clamp 130 is mounted at the periphery of the mandrel 110 in a median plane thereto. It is provided with a groove 132 making it possible to accommodate an edge
  • Fia intended for the start of the winding of a first sheet FI around the mandrel 110.
  • the sheet FI wraps around said mandrel 110.
  • the manufacturing device 100 also includes a support 200 intended to support a sheet F or another sheet before it is wound up. It comprises a flat seat 210 suitable for receiving the sheet F, and the plane passing through said seat 210 is tangent to the envelope of the mandrel 110.
  • the height of this seat 210 can be modified so that the plane passing through that -this can be offset from the cylindrical shell of the mandrel 110, by a height multiple of that of the thickness of a sheet F.
  • the plane passing through the support 200 intersects that passing through the axes of the mandrel 110 and the pressing roller 120 at a right angle, so that the driving of the sheet F by the pressing roller 120 and by the mandrel 110 is made in a direction parallel to that of the seat 210.
  • the support 200 is bordered laterally by two rails 220 of which only one rail 220a is visible in this FIG., and which are intended to guide in a rectilinear movement each sheet F.
  • the rails 220 are spaced a distance slightly greater than the height of a sheet F.
  • each sheet F intended for the manufacture of a closed section packaging consists of a sheet of flexible natural material Fb such as wood, cork or leather and which is laminated on a support sheet Fc preferably made of cardboard.
  • the sheet of natural material Fb is a sheet of wood.
  • the manufacture of a closed section packaging takes place as follows.
  • the mandrel 110 is preferably heated by its heating means.
  • the heating temperature of the mandrel 110 is preferably established around 40 ° C.
  • a first sheet FI is deposited on the seat 210 so that its sheet of natural material Fb is turned towards the mandrel 110 so that it can form the internal wall of a package, then its starting edge Fia d the winding is inserted between the pressing roller 120 and the mandrel 110, before being brought into the groove 132 of the clamp 130 in a direction indicated by the arrow A in FIG. 1.
  • the mandrel 110 and the pressing roller 120 are then rotated in the directions indicated by the arrows B and C respectively.
  • the sheet FI then wraps around the mandrel 110 according to arrow B.
  • the length of this first sheet FI is such that it is at most equal to the circumference of the mandrel 110 and preferably equal, or slightly less than this circumference.
  • Fia and its opposite edge Flb are now arranged opposite one another.
  • the sheet FI then forms a cylinder.
  • the edge Fia is held in the groove 132 of the clamp 130, while the opposite edge Flb is kept pressed between the pressing roller 120 and the mandrel 110.
  • the outer wall of the sheet FI is then glued.
  • a second sheet F2 can then be rolled up and glued to the sheet FI in the following manner.
  • the sheet F2 is deposited on the seat 210 so that its sheet of natural material Fb is turned towards the outside of the mandrel 110 so that it can form the external wall of a package.
  • the mandrel 110 is previously rotated so that the edge F2a of the sheet F2 does not coincide, during its bonding, with the edges F 1 a or F 1 b of the sheet FI.
  • the angle ⁇ indicated in FIG. 5 which is centered on the mandrel 110 and taken between the edge Fia for starting the winding of the first sheet FI and the edge F2a for starting the winding of the second sheet F2 has a value close to: 2 ⁇ / number of sheets F, that is to say a value close to 180 ° C. in this FIG.
  • the edge F2a of the sheet 2 is then inserted between the mandrel 110 and the glued outer wall of the sheet FI in a direction indicated by the arrow A.
  • the mandrel 110 and the pressing roller 120 are rotated according to the arrows respectively B and C.
  • the pressing roller 120 presses the sheet F2 against the sheet FI, which causes the intimate mutual bonding of the two sheets FI and F2 by their faces in contact.
  • the mandrel 110 is heated, the heat released by the latter accelerates the drying time of the adhesive.
  • the mandrel 110 has performed a complete rotation. It will be noted that the length of this second sheet F2 is such that it is at most equal to the circumference of the first sheet FI and preferably equal to or slightly less than this circumference.
  • the removable clip 130 is removed.
  • the pressing roller 120 can be held in position to confirm the bonding of the edge F2b opposite the edge F2a and disposed opposite it.
  • FIG. 7 It consists of sheets FI and F2, and its internal and external walls consist respectively of a sheet of natural material Fb.
  • the angle ⁇ indicated in FIG. 7 which is centered on the axis of the packaging and taken between the edge Fia of the start of winding of the first sheet FI and the edge F2a of the start of winding of the second sheet F2 has a value close to: 2 ⁇ / number of sheets F, that is to say a value close to 180 ° C. in this FIG.
  • FIG. 9 An exemplary embodiment of a circular section packaging produced by this variant of the operating method of the manufacturing process is shown in FIG. 9.
  • This packaging is constituted in this FIG. a reinforcing sheet Tl sandwiched between two sheets FI and F2.
  • the internal and external walls of the packaging of the invention always consist respectively of a sheet of natural material Fb in order to present the appearance of a packaging made of a natural material.
  • the angle ⁇ indicated in FIG. 9 which is centered on the axis of the packaging and taken between the winding starting edges Fia and Tla or Tla and F2a or F2a and Fia of the sheets FI, F2 or reinforcement sheets Tl has a value close to:
  • the inner and outer walls of the packaging being made of a natural material Fb, it is possible to have thereon a marking M produced by pyrography, as it appears in FIG. 7.
  • a bottom and a lid preferably made of a natural material are suitable for closing the openings of the packaging.
  • the bottom and the cover can also be pyrographed.
  • the bottom and the cover may, in one embodiment, be made of metal.
  • the manufacturing process of the invention makes it possible to manufacture packages of closed section essentially produced in a natural material with a manufacturing cost comparable to those produced from sheets of cardboard wound in a helical shape.
  • the process also allows the marking of packaging by pyrography.
  • the sheet or sheets F or reinforcement sheets Tl can be held around the mandrel 110 during the drying time of the glue by clamping means, such as strapping, enveloping the periphery said sheets F or Tl reinforcement sheets.
  • clamping means such as strapping, enveloping the periphery said sheets F or Tl reinforcement sheets.
  • the packaging is dipped in a paraffin bath to give its walls a seal against the outside.
  • perforations are made through sheets or reinforcement sheet (s) FI, Tl, F2. These perforations P are centered on the same axis during their winding steps. It is also possible to provide for a step of winding and gluing a sheet of transparent plastic material S between two sheets or sheet (s) of reinforcement FI, Tl, F2 so as to close the perforations P.
  • An embodiment of a closed section packaging of circular type produced by this variant of the operating method of the manufacturing process is shown in FIG. 10. This packaging respectively comprise perforations P centered on the same axis making it possible to see inside the packaging to assess the product (s) intended to be contained therein. To avoid the introduction of dust inside the packaging, the perforations P are closed by a transparent plastic sheet S.

Abstract

The invention relates to a method for producing a packaging which has a closed section consisting of flaps (F1, F2) which are respectively formed from a sheet of natural flexible material (Fb) glued onto a supporting sheet (Fc). The inventive method is characterized in that a first sheet (F1) is wound around a mandrel (110), said sheet being positioned with the natural material sheet thereof (Fb) and oriented towards the mandrel (110) in such a way that it can form the inner wall of said packaging; the outer wall of the sheet (F1) or the inner wall of at least one sheet (F2) is glued; each sheet (F2) is wound so that it can be glued around the first sheet (F1) or a first previously wound sheet (F2), said latter sheet (F2) being positioned with the sheet of natural material (Fb) thereof and oriented towards the outside of the mandrel (110) in such a way that it can form the outer wall of the packaging, the winding stage of each sheet (F2) being carried out in such a way that the edge (F2a) from which the winding of each sheet (F2) begins does not coincide with the edge (F1a, F2a) from which the windinng of the first sheet (F1) or a previously wound sheet (F2) begins.

Description

Procédé de fabrication d'un emballage de section fermée à base de feuillets, et emballage de section fermée constituée de feuillets Method for manufacturing a closed section packaging based on sheets, and closed section packaging made up of sheets
La présente invention concerne un procédé de fabrication d'un emballage de section fermée à base de feuillets incorporant au moins une matière naturelle telle que le bois ainsi qu'un emballage de section fermée fabriqué à base de feuillets incorporant au moins une matière naturelle telle que le bois. On connaît depuis longtemps des emballages de section fermée, comme des emballages de section circulaire, tels que des cylindres creux, utilisés par exemple pour protéger les bouteilles des chocs. Parmi ceux-ci, on distingue des emballages constitués de feuilles de carton enroulées en hélicoïde pour former des tubes.The present invention relates to a method of manufacturing a closed section packaging based on sheets incorporating at least one natural material such as wood as well as a closed section packaging made based on sheets incorporating at least a natural material such as wood. Closed section packaging has long been known, such as circular section packaging, such as hollow cylinders, used for example to protect bottles from impact. Among these, there are packages made of sheets of cardboard wound in a helical shape to form tubes.
S'agissant d'un emballage destiné à présenter des produits de valeur, par exemple des flacons de boissons réputées, un tel emballage en carton ne permet pas d'obtenir une qualité de présentation que peut procurer une matière naturelle comme du bois.As this is a packaging intended to present valuable products, for example bottles of reputable drinks, such cardboard packaging does not make it possible to obtain a quality of presentation that a natural material such as wood can provide.
Aussi, pour fabriquer un emballage de section cylindrique constitué de bois, une première solution consiste à usiner par tournage une pièce de bois pour lui donner la forme d'un tube. Cette solution est coûteuse et impose l'utilisation de pièces de bois d'un diamètre au moins égal à celui du tube à fabriquer. Le but de l'invention est donc de proposer un procédé de fabrication d'un emballage de section fermée à base de feuillets incorporant au moins une matière naturelle telle que le bois, et qui n'impose pas l'usinage d'une pièce de bois et dont le prix de revient soit avantageux.Also, to manufacture a cylindrical section packaging made of wood, a first solution consists in machining by turning a piece of wood to give it the shape of a tube. This solution is expensive and requires the use of pieces of wood with a diameter at least equal to that of the tube to be manufactured. The object of the invention is therefore to propose a method of manufacturing a closed section packaging based on sheets incorporating at least one natural material such as wood, and which does not require the machining of a workpiece. wood and whose cost price is advantageous.
A cet effet, le procédé de fabrication d'un emballage de section fermée à base de feuillets formés respectivement d'une feuille de matière naturelle souple contrecoUée sur une feuille support, est remarquable en ce qu'il consiste à enrouler un premier feuillet autour d'un mandrin, le feuillet étant positionné avec sa feuille de matière naturelle tournée vers ledit mandrin de manière à ce qu'elle puisse former la paroi interne dudit emballage, à encoller la paroi externe du feuillet ou la paroi interne d'au moins un second feuillet, à enrouler chaque feuillet pour le coller autour du premier feuillet ou d'un feuillet précédemment enroulé, le dernier feuillet étant positionné avec sa feuille de matière naturelle tournée vers l'extérieur du mandrin de manière à ce qu'elle puisse former la paroi externe de l'emballage, l'étape d'enroulement de chaque feuillet s'opérant de telle manière que le bord de départ d'enroulement du feuillet ne coïncide pas avec le bord de départ d'enroulement du premier feuillet ou d'un feuillet précédemment enroulé.To this end, the method of manufacturing a closed section packaging based on sheets formed respectively of a sheet of flexible natural material contrecoUé on a support sheet, is remarkable in that it consists in winding a first sheet around '' a mandrel, the sheet being positioned with its sheet of natural material facing towards said mandrel so that it can form the internal wall of said packaging, to glue the external wall of the sheet or the internal wall of at least a second sheet, to wrap each sheet to stick it around the first sheet or a previously rolled sheet, the last sheet being positioned with its sheet of natural material turned towards the outside of the mandrel so that it can form the wall outer of the package, the step of winding each sheet taking place in such a way that the starting edge for winding the sheet does not coincide with the bo starting rd of winding of the first sheet or of a sheet previously rolled up.
De cette manière, la réalisation de l'emballage de section fermée est simplifiée. Selon une autre caractéristique de l'invention, le procédé de fabrication consiste à prévoir, en outre, une étape d'enroulement et de collage d'une feuille de renfort entre deux feuillets, l'étape d'enroulement de la feuille de renfort s'opérant de telle manière que le bord de départ d'enroulement de la feuille de renfort ne coïncide pas avec le bord de départ d'enroulement des feuillets. Selon une autre caractéristique de l'invention, le procédé de fabrication consiste à décaler les bords de départ d'enroulement de deux feuillets ou feuille(s) de renfort destinés à être collés mutuellement, d'un angle α centré sur l'axe du mandrin d'une valeur voisine de : 2 π / nombre de feuillets et de feuilles de renfort.In this way, the production of the closed section packaging is simplified. According to another characteristic of the invention, the manufacturing method consists in providing, in addition, a step of winding and gluing a reinforcing sheet between two sheets, the step of winding the reinforcing sheet s operating in such a way that the starting edge for winding the reinforcing sheet does not coincide with the starting edge for winding the sheets. According to another characteristic of the invention, the manufacturing process consists in shifting the winding starting edges of two sheets or sheet (s) of reinforcement intended to be glued to each other, by an angle α centered on the axis of the mandrel with a value close to: 2 π / number of sheets and backing sheets.
Selon une autre caractéristique de l'invention, le procédé de fabrication consiste à réaliser respectivement des perforations au travers des feuillets ou feuille(s) de renfort, les perforations étant centrées sur le même axe lors de leurs étapes d'enroulement.According to another characteristic of the invention, the manufacturing process consists in respectively making perforations through sheets or reinforcement sheet (s), the perforations being centered on the same axis during their winding stages.
Selon une autre caractéristique de l'invention, le procédé de fabrication consiste à prévoir en outre une étape d'enroulement et de collage d'une feuille de matière plastique transparente entre deux feuillets ou feuille(s) de renfort de manière à fermer les perforations.According to another characteristic of the invention, the manufacturing process also includes providing a step of winding and gluing a sheet of material transparent plastic between two sheets or reinforcement sheet (s) so as to close the perforations.
Selon une autre caractéristique de l'invention, le procédé de fabrication consiste à chauffer le mandrin pour faciliter l'enroulement de feuillets ou feuilles de renfort autour de lui et accélérer le temps de séchage de la colle.According to another characteristic of the invention, the manufacturing process consists in heating the mandrel to facilitate the winding of reinforcing sheets or sheets around it and to accelerate the drying time of the glue.
Selon une autre caractéristique de l'invention, le procédé de fabrication consiste à établir la température du mandrin autour de 40° C.According to another characteristic of the invention, the manufacturing process consists in establishing the temperature of the mandrel around 40 ° C.
Selon une autre caractéristique de l'invention, le procédé de fabrication consiste à presser, par un rouleau de pressage, les feuillets ou feuilles de renfort ou feuille de matière plastique transparente lors de leurs enroulements sur le mandrin.According to another characteristic of the invention, the manufacturing process consists in pressing, by a pressing roller, the reinforcing sheets or sheets or transparent plastic sheet during their windings on the mandrel.
Selon une autre caractéristique de l'invention, le procédé de fabrication consiste à maintenir les feuillets ou feuilles de renfort ou feuille de matière plastique transparente autour du mandrin, pendant le temps de séchage de la colle, par des moyens de serrage tels que des cerclages. Selon une autre caractéristique de l'invention, le procédé de fabrication consiste à tremper l'emballage dans un bain de paraffine pour conférer à ses parois une étanchéité vis-à-vis de l'extérieur.According to another characteristic of the invention, the manufacturing process consists in maintaining the reinforcing sheets or sheets or transparent plastic sheet around the mandrel, during the time of drying of the adhesive, by clamping means such as strapping . According to another characteristic of the invention, the manufacturing process consists of dipping the packaging in a paraffin bath to give its walls a seal against the outside.
L'invention concerne également un emballage de section fermée constitué de feuillets formés respectivement d'une feuille de matière naturelle souple contrecoUée sur une feuille support. Un tel emballage est remarquable en ce que les feuillets sont collés par leurs faces en contact, et sont disposés l'un par rapport à l'autre de telle manière que, d'une part, le bord de départ d'enroulement de chaque feuillet ne coïncide pas avec le bord de départ d'enroulement du feuillet ou d'un autre feuillet et, d'autre part, que leurs feuilles de matière naturelle constituent respectivement les parois interne et externe de l'emballage.The invention also relates to a closed section packaging consisting of sheets respectively formed of a sheet of flexible natural material contrecoUé on a support sheet. Such a packaging is remarkable in that the sheets are glued by their faces in contact, and are arranged relative to each other in such a way that, on the one hand, the starting winding edge of each sheet does not coincide with the starting edge for winding the sheet or another sheet and, on the other hand, that their sheets of natural material respectively constitute the inner and outer walls of the package.
Selon une autre caractéristique de l'invention, la feuille support est une feuille de carton.According to another characteristic of the invention, the support sheet is a cardboard sheet.
Selon une autre caractéristique de l'invention, la matière naturelle de chaque feuille de matière naturelle est choisie parmi le bois, le liège ou le cuir. Selon une autre caractéristique de l'invention, l'emballage comporte en outre une feuille de renfort disposée entre deux feuillets, le bord de départ d'enroulement de la feuille de renfort ne coïncidant pas avec le bord de départ d'enroulement des feuillets. Selon une autre caractéristique de l'invention, la feuille de renfort est une feuille de fibres de verre.According to another characteristic of the invention, the natural material of each sheet of natural material is chosen from wood, cork or leather. According to another characteristic of the invention, the packaging further comprises a reinforcing sheet disposed between two sheets, the starting winding edge of the reinforcing sheet not coinciding with the starting winding edge of the sheets. According to another characteristic of the invention, the reinforcing sheet is a sheet of glass fibers.
Selon une autre caractéristique de l'invention, la feuille de renfort est une feuille de plastique. Selon une autre caractéristique de l'invention, l'angle α centré sur l'axe de l'emballage et pris entre les bords de départ d'emoulement de deux feuillets ou feuilles de renfort adjacents, a une valeur voisine de : 2 π / nombre de feuillets et de feuilles de renfort.According to another characteristic of the invention, the reinforcing sheet is a plastic sheet. According to another characteristic of the invention, the angle α centered on the axis of the packaging and taken between the starting edges of the unwinding of two adjacent sheets or reinforcing sheets, has a value close to: 2 π / number of sheets and backing sheets.
Selon une autre caractéristique de l'invention, les ouvertures de l'emballage sont respectivement obturées par un fond et un couvercle fabriqués en bois.According to another characteristic of the invention, the openings of the packaging are respectively closed by a bottom and a cover made of wood.
Selon une autre caractéristique de l'invention, la paroi externe et/ou le fond ou le couvercle comportent un marquage réalisé par pyrogravure.According to another characteristic of the invention, the external wall and / or the bottom or the cover include a marking produced by pyrography.
Selon une autre caractéristique de l'invention, les ouvertures de l'emballage sont respectivement obturées par un fond et un couvercle fabriqués en métal. Selon une autre caractéristique de l'invention, les feuillets ou feuille(s) de renfort comportent respectivement des perforations centrées sur le même axe.According to another characteristic of the invention, the openings of the packaging are respectively closed by a bottom and a cover made of metal. According to another characteristic of the invention, the reinforcing sheets or sheet (s) respectively comprise perforations centered on the same axis.
Selon une autre caractéristique de l'invention, les perforations sont fermées par une feuille de matière plastique transparente disposée entre deux feuillets ou feuille(s) de renfort. Les caractéristiques de l'invention mentionnées ci-dessus, ainsi que d'autres, apparaîtront plus clairement à la lecture de la description suivante d'un exemple de réalisation, ladite description étant faite en relation avec les dessins joints, parmi lesquels: la Fig. la représente une vue de face d'un dispositif de fabrication d'un emballage de section fermée de type circulaire selon l'invention, la Fig. lb représente une vue en coupe d'un des feuillets destiné à la fabrication d'un emballage de section fermée selon l'invention, la Fig. 2 représente une vue de face d'un dispositif de fabrication d'un emballage de section circulaire lors d'une étape d'enroulement d'un premier feuillet selon le procédé de fabrication d'un emballage de section circulaire selon l'invention, la Fig. 3 représente une vue de face d'un dispositif de fabrication d'un emballage de section circulaire à la fin de l'étape d'enroulement d'un premier feuillet selon le procédé de fabrication d'un emballage de section circulaire selon l'invention, la Fig. 4 représente une vue de face d'un dispositif de fabrication d'un emballage de section circulaire pendant la préparation de l'étape d'enroulement d'un second feuillet selon le procédé de fabrication d'un emballage de section circulaire selon l'invention, la Fig. 5 représente une vue de face d'un dispositif de fabrication d'un emballage de section circulaire lors de l'étape d'enroulement d'un second feuillet selon le procédé de fabrication d'un emballage de section circulaire selon l'invention, la Fig. 6 représente une vue de face d'un dispositif de fabrication d'un emballage de section circulaire à l'issue de l'étape d'enroulement d'un second feuillet selon le procédé de fabrication d'un emballage de section circulaire selon l'invention, la Fig. 7 représente une vue en perspective d'un emballage de section circulaire fabriqué par le procédé de fabrication selon l'invention, la Fig. 8 représente une vue de face d'un dispositif de fabrication d'un emballage de section circulaire à l'issue de l'étape d'enroulement d'un feuillet recouvrant une feuille de renfort selon une variante du mode opératoire du procédé de fabrication d'un emballage de section circulaire selon l'invention, la Fig. 9 représente une vue en perspective d'un emballage de section circulaire fabriqué dans une variante du mode opératoire du procédé de fabrication selon l'invention, et la Fig. 10 représente une vue en perspective d'un emballage de section circulaire fabriqué dans une autre variante du mode opératoire du procédé de fabrication selon l'invention.According to another characteristic of the invention, the perforations are closed by a transparent plastic sheet disposed between two sheets or sheet (s) of reinforcement. The characteristics of the invention mentioned above, as well as others, will appear more clearly on reading the following description of an exemplary embodiment, said description being made in relation to the accompanying drawings, among which: FIG. . 1a represents a front view of a device for manufacturing a packaging of closed section of circular type according to the invention, FIG. lb shows a sectional view of one of the sheets intended for the manufacture of a closed section package according to the invention, FIG. 2 shows a front view of a device for manufacturing a packaging of circular section during a step of winding a first sheet according to the method of manufacturing a packaging of circular section according to the invention, the Fig. 3 shows a front view of a device for manufacturing a packaging of circular section at the end of the step of winding a first sheet according to the method of manufacturing a circular section packaging according to the invention, FIG. 4 shows a front view of a device for manufacturing a packaging of circular section during the preparation of the step of winding a second sheet according to the method of manufacturing a packaging of circular section according to the invention , Fig. 5 shows a front view of a device for manufacturing a packaging of circular section during the step of winding a second sheet according to the method of manufacturing a packaging of circular section according to the invention, the Fig. 6 shows a front view of a device for manufacturing a packaging of circular section at the end of the step of winding a second sheet according to the method of manufacturing a packaging of circular section according to invention, FIG. 7 shows a perspective view of a circular section packaging produced by the manufacturing method according to the invention, FIG. 8 shows a front view of a device for manufacturing a packaging of circular section at the end of the step of winding a sheet covering a reinforcing sheet according to a variant of the operating method of the manufacturing process. a packaging of circular section according to the invention, FIG. 9 shows a perspective view of a circular section packaging manufactured in a variant of the operating method of the manufacturing process according to the invention, and FIG. 10 shows a perspective view of a circular section packaging manufactured in another variant of the operating method of the manufacturing method according to the invention.
A la Fig. 1, le dispositif de fabrication 100 d'un emballage de section fermée comprend notamment un mandrin 110 destiné à permettre l'enroulement de feuillets F autour de lui. Il comporte à cet effet un rouleau de pressage 120 permettant de presser un ou plusieurs feuillets F ou autres feuilles contre le mandrin 110 lors de leurs enroulements respectifs. Le rouleau de pressage 120 peut, à cet effet, être maintenu en pression à l' encontre du mandrin 110 par un dispositif de pressage non représenté incorporant un moyen de pression tel qu'un vérin ou un ressort. Par ailleurs, le mandrin 110 peut être chauffé par un moyen de chauffage, non représenté, tel qu'une résistance électrique, et qui est destiné à faciliter l'enroulement de feuillets autour de lui.In Fig. 1, the device 100 for manufacturing a package of closed section notably comprises a mandrel 110 intended to allow the wrapping of sheets F around it. It has for this purpose a pressing roller 120 making it possible to press one or more sheets F or other sheets against the mandrel 110 during their respective windings. The pressing roller 120 can, for this purpose, be kept under pressure against the mandrel 110 by a pressing device (not shown) incorporating a pressure means such as a jack or a spring. Furthermore, the mandrel 110 can be heated by a heating means, not shown, such as an electrical resistance, and which is intended to facilitate the winding of sheets around it.
A la Fig. 1, le mandrin 110 et le rouleau de pressage 120 ont une section cylindrique permettant de fabriquer des emballages de section cylindrique. Dans un mode de réalisation non représenté, le mandrin a une section polygonale convexe ou concave.In Fig. 1, the mandrel 110 and the pressing roller 120 have a cylindrical section making it possible to manufacture packages of cylindrical section. In an embodiment not shown, the mandrel has a convex or concave polygonal section.
Le mandrin 110 et le rouleau de pressage 120 sont entraînés en rotation en sens inverse l'un de l'autre par un dispositif non représenté, et de préférence mutuellement de telle manière que leurs vitesses périphériques soient sensiblement égales.The mandrel 110 and the pressing roller 120 are rotated in opposite directions to each other by a device not shown, and preferably mutually so that their peripheral speeds are substantially equal.
Une pince amovible 130 est montée à la périphérie du mandrin 110 dans un plan médian à celle-ci. Elle est pourvue d'une gorge 132 permettant de loger un bordA removable clamp 130 is mounted at the periphery of the mandrel 110 in a median plane thereto. It is provided with a groove 132 making it possible to accommodate an edge
Fia destiné au départ de l'enroulement d'un premier feuillet FI autour du mandrin 110. Ainsi, lors de l'entraînement en rotation du mandrin 110 et du rouleau de pressage 120, le feuillet FI s'enroule autour dudit mandrin 110.Fia intended for the start of the winding of a first sheet FI around the mandrel 110. Thus, during the rotational drive of the mandrel 110 and the pressing roller 120, the sheet FI wraps around said mandrel 110.
Le dispositif de fabrication 100 comporte encore un support 200 destiné à supporter un feuillet F ou une autre feuille avant son enroulement. Il comprend une assise 210 plane apte à recevoir le feuillet F, et dont le plan passant par ladite assise 210 est tangent à l'enveloppe du mandrin 110. La hauteur de cette assise 210 peut être modifiée de telle manière que le plan passant par celle-ci puisse être décalé par rapport à l'enveloppe cylindrique du mandrin 110, d'une hauteur multiple de celle de l'épaisseur d'un feuillet F.The manufacturing device 100 also includes a support 200 intended to support a sheet F or another sheet before it is wound up. It comprises a flat seat 210 suitable for receiving the sheet F, and the plane passing through said seat 210 is tangent to the envelope of the mandrel 110. The height of this seat 210 can be modified so that the plane passing through that -this can be offset from the cylindrical shell of the mandrel 110, by a height multiple of that of the thickness of a sheet F.
On remarquera que le plan passant par le support 200 coupe celui passant par les axes du mandrin 110 et du rouleau de pressage 120 suivant un angle droit, de manière à ce que l'entraînement du feuillet F par le rouleau de pressage 120 et par le mandrin 110 se fait dans une direction parallèle à celle de l'assise 210. Le support 200 est bordé latéralement par deux rails 220 dont seul un rail 220a est visible à cette Fig., et qui sont destinés à guider suivant un mouvement rectiligne chaque feuillet F. A cet effet, les rails 220 sont espacés d'une distance légèrement plus grande que la hauteur d'un feuillet F.It will be noted that the plane passing through the support 200 intersects that passing through the axes of the mandrel 110 and the pressing roller 120 at a right angle, so that the driving of the sheet F by the pressing roller 120 and by the mandrel 110 is made in a direction parallel to that of the seat 210. The support 200 is bordered laterally by two rails 220 of which only one rail 220a is visible in this FIG., and which are intended to guide in a rectilinear movement each sheet F. For this purpose, the rails 220 are spaced a distance slightly greater than the height of a sheet F.
A la Fig. 2, chaque feuillet F destiné à la fabrication d'un emballage de section fermée est constitué d'une feuille de matière naturelle souple Fb telle que du bois, du liège ou du cuir et qui est contrecoUée sur une feuille support Fc de préférence en carton. Avantageusement, la feuille de matière naturelle Fb est une feuille de bois.In Fig. 2, each sheet F intended for the manufacture of a closed section packaging consists of a sheet of flexible natural material Fb such as wood, cork or leather and which is laminated on a support sheet Fc preferably made of cardboard. Advantageously, the sheet of natural material Fb is a sheet of wood.
La fabrication d'un emballage de section fermée se déroule de la manière suivante. Le mandrin 110 est de préférence chauffé par son moyen de chauffage. La température de chauffage du mandrin 110 est de préférence établie autour de 40° C.The manufacture of a closed section packaging takes place as follows. The mandrel 110 is preferably heated by its heating means. The heating temperature of the mandrel 110 is preferably established around 40 ° C.
A la Fig. 1, un premier feuillet FI est déposé sur l'assise 210 de telle manière que sa feuille de matière naturelle Fb soit tournée vers le mandrin 110 afin qu'elle puisse former la paroi interne d'un emballage, puis son bord Fia de départ d'enroulement est inséré entre le rouleau de pressage 120 et le mandrin 110, avant d'être amené dans la gorge 132 de la pince 130 suivant une direction indiquée par la flèche A à la Fig. 1. Le mandrin 110 et le rouleau de pressage 120 sont ensuite mis en rotation suivant respectivement les directions indiquées par les flèches B et C.In Fig. 1, a first sheet FI is deposited on the seat 210 so that its sheet of natural material Fb is turned towards the mandrel 110 so that it can form the internal wall of a package, then its starting edge Fia d the winding is inserted between the pressing roller 120 and the mandrel 110, before being brought into the groove 132 of the clamp 130 in a direction indicated by the arrow A in FIG. 1. The mandrel 110 and the pressing roller 120 are then rotated in the directions indicated by the arrows B and C respectively.
A la Fig. 2, le feuillet FI s'enroule alors autour du mandrin 110 suivant la flèche B. La longueur de ce premier feuillet FI est telle qu'elle est au plus égale à la circonférence du mandrin 110 et de préférence égale, ou légèrement inférieure à cette circonférence.In Fig. 2, the sheet FI then wraps around the mandrel 110 according to arrow B. The length of this first sheet FI is such that it is at most equal to the circumference of the mandrel 110 and preferably equal, or slightly less than this circumference.
A la Fig. 3, le feuillet FI est complètement enroulé sur le mandrin 110. Le bordIn Fig. 3, the FI sheet is completely wound on the mandrel 110. The edge
Fia et son bord opposé Flb sont maintenant disposés l'un vis-à-vis de l'autre. Le feuillet FI forme alors un cylindre. Le bord Fia est maintenu dans la gorge 132 de la pince 130, alors que le bord opposé Flb est maintenu pressé entre le rouleau de pressage 120 et le mandrin 110.Fia and its opposite edge Flb are now arranged opposite one another. The sheet FI then forms a cylinder. The edge Fia is held in the groove 132 of the clamp 130, while the opposite edge Flb is kept pressed between the pressing roller 120 and the mandrel 110.
A la Fig. 4, la paroi externe du feuillet FI est ensuite encollée. Un second feuillet F2 peut alors être enroulé et collé sur le feuillet FI de la manière suivante. Le feuillet F2 est déposé sur l'assise 210 de telle manière que sa feuille de matière naturelle Fb soit tournée vers l'extérieur du mandrin 110 afin qu'elle puisse former la paroi externe d'un emballage. Avant l'insertion du bord F2a de départ d'enroulement du feuillet F2 entre le rouleau de pressage 120 et le mandrin 110 pour initier le collage du feuillet F2 sur le feuillet FI, le mandrin 110 est préalablement déplacé à rotation de telle manière que le bord F2a du feuillet F2 ne coïncide pas, lors de son collage, avec les bords F 1 a ou F 1 b du feuillet FI.In Fig. 4, the outer wall of the sheet FI is then glued. A second sheet F2 can then be rolled up and glued to the sheet FI in the following manner. The sheet F2 is deposited on the seat 210 so that its sheet of natural material Fb is turned towards the outside of the mandrel 110 so that it can form the external wall of a package. Before the insertion of the start edge F2a for winding the sheet F2 between the pressing roller 120 and the mandrel 110 to initiate the bonding of the sheet F2 on the sheet FI, the mandrel 110 is previously rotated so that the edge F2a of the sheet F2 does not coincide, during its bonding, with the edges F 1 a or F 1 b of the sheet FI.
Avantageusement, l'angle α indiqué à la Fig. 5 qui est centré sur le mandrin 110 et pris entre le bord Fia de départ d'enroulement du premier feuillet FI et le bord F2a de départ d'enroulement du second feuillet F2 a une valeur voisine de : 2 π / nombre de feuillets F, c'est-à-dire une valeur voisine de 180° C à cette Fig. A la Fig. 5, le bord F2a du feuillet 2 est alors inséré entre le mandrin 110 et la paroi externe encollée du feuillet FI suivant une direction indiquée par la flèche A. Le mandrin 110 ainsi que le rouleau de pressage 120 sont mis en rotation suivant respectivement les flèches B et C. Le rouleau de pressage 120 presse le feuillet F2 contre le feuillet FI, ce qui provoque le collage mutuel intime des deux feuillets FI et F2 par leurs faces en contact. Lorsque le mandrin 110 est chauffé, la chaleur dégagée par celui-ci accélère le temps de séchage de la colle.Advantageously, the angle α indicated in FIG. 5 which is centered on the mandrel 110 and taken between the edge Fia for starting the winding of the first sheet FI and the edge F2a for starting the winding of the second sheet F2 has a value close to: 2 π / number of sheets F, that is to say a value close to 180 ° C. in this FIG. In Fig. 5, the edge F2a of the sheet 2 is then inserted between the mandrel 110 and the glued outer wall of the sheet FI in a direction indicated by the arrow A. The mandrel 110 and the pressing roller 120 are rotated according to the arrows respectively B and C. The pressing roller 120 presses the sheet F2 against the sheet FI, which causes the intimate mutual bonding of the two sheets FI and F2 by their faces in contact. When the mandrel 110 is heated, the heat released by the latter accelerates the drying time of the adhesive.
A la Fig. 6, le mandrin 110 a effectué une rotation complète. On remarquera que la longueur de ce second feuillet F2 est telle qu'elle est au plus égale à la circonférence du premier feuillet FI et de préférence égale ou légèrement inférieure à cette circonférence. La pince 130 amovible est retirée. Le rouleau de pressage 120 peut être maintenu en position pour confirmer le collage du bord F2b opposé au bord F2a et disposé en vis-à-vis de celui-ci.In Fig. 6, the mandrel 110 has performed a complete rotation. It will be noted that the length of this second sheet F2 is such that it is at most equal to the circumference of the first sheet FI and preferably equal to or slightly less than this circumference. The removable clip 130 is removed. The pressing roller 120 can be held in position to confirm the bonding of the edge F2b opposite the edge F2a and disposed opposite it.
L'emballage de section circulaire ainsi réalisé peut ensuite être extrait latéralement du mandrin 110. Un tel emballage est représenté à la Fig. 7. Il est constitué de feuillets FI et F2, et ses parois interne et externe sont constituées respectivement d'une feuille de matière naturelle Fb.The packaging of circular section thus produced can then be removed laterally from the mandrel 110. Such packaging is shown in FIG. 7. It consists of sheets FI and F2, and its internal and external walls consist respectively of a sheet of natural material Fb.
Avantageusement, l'angle α indiqué à la Fig. 7 qui est centré sur l'axe de l'emballage et pris entre le bord Fia de départ d'enroulement du premier feuillet FI et le bord F2a de départ d'enroulement du second feuillet F2 a une valeur voisine de : 2 π / nombre de feuillets F, c'est-à-dire une valeur voisine de 180° C à cette Fig.Advantageously, the angle α indicated in FIG. 7 which is centered on the axis of the packaging and taken between the edge Fia of the start of winding of the first sheet FI and the edge F2a of the start of winding of the second sheet F2 has a value close to: 2 π / number of sheets F, that is to say a value close to 180 ° C. in this FIG.
D'autres feuillets F peuvent être enroulés et collés successivement, de la même manière que l'on été décrit précédemment l'enroulement et le collage d'un feuillet F2. Dans une variante d'un mode opératoire représentée à la Fig. 8 du procédé de fabrication, il est avantageux d'incorporer une étape d'enroulement et de collage d'au moins une feuille de renfort Tl, comme une feuille de fibres de verre, afin de rigidifier l'emballage ou une feuille de plastique formant de surcroît une étanchéité des parois de l'emballage. Il convient d'enrouler et de coller chaque feuille de renfort Tl de la même manière qu'un feuillet F2, tel que cela a été précédemment décrit. Cependant, chaque feuille de renfort Tl doit être enroulée entre deux feuillets FI et F2, comme le montre la Fig. 8, c'est-à-dire qu'elle est de préférence encollée sur sa paroi externe puis recouverte d'un feuillet F2 enroulé et collé d'une manière identique à ce qui a été décrit précédemment. On remarquera que l'angle α indiqué à la Fig. 8 qui est centré sur le mandrinOther sheets F can be wound and glued successively, in the same way as described above, the winding and gluing of a sheet F2. In a variant of an operating mode shown in FIG. 8 of the manufacturing process, it is advantageous to incorporate a step of winding and gluing at least one reinforcing sheet Tl, such as a sheet of glass fibers, in order to stiffen the packaging or a plastic sheet forming in addition a seal of the walls of the packaging. Each reinforcement sheet T1 should be wound up and glued in the same way as a sheet F2, as described above. However, each reinforcing sheet T1 must be wound between two sheets FI and F2, as shown in FIG. 8, that is to say that it is preferably glued to its outer wall and then covered with a sheet F2 wound and glued in a manner identical to that which has been described above. It will be noted that the angle α indicated in FIG. 8 which is centered on the mandrel
110 et pris entre les bords de départ d'enroulement Fia et Tla ou Tla et F2a ou F2a et Fia de deux feuillets FI, F2 ou feuilles de renfort Tl adjacents a une valeur voisine de : 2 π / nombre de feuillets F et de feuilles de renfort Tl, c'est-à-dire voisine de 120° C à cette Fig.110 and taken between the winding start edges Fia and Tla or Tla and F2a or F2a or Fia of two sheets FI, F2 or Tl reinforcement sheets adjacent has a value close to: 2 π / number of sheets F and sheets reinforcement Tl, that is to say close to 120 ° C in this FIG.
Un exemple de réalisation d'un emballage de section circulaire réalisé par cette variante du mode opératoire du procédé de fabrication est représenté à la Fig. 9. Cet emballage est constitué à cette Fig. d'une feuille de renfort Tl prise en sandwich entre deux feuillets FI et F2. Les parois interne et externe de l'emballage de l'invention sont toujours constituées respectivement d'une feuille de matière naturelle Fb afin de présenter l'apparence d'un emballage fabriqué dans une matière naturelle.An exemplary embodiment of a circular section packaging produced by this variant of the operating method of the manufacturing process is shown in FIG. 9. This packaging is constituted in this FIG. a reinforcing sheet Tl sandwiched between two sheets FI and F2. The internal and external walls of the packaging of the invention always consist respectively of a sheet of natural material Fb in order to present the appearance of a packaging made of a natural material.
Avantageusement, l'angle α indiqué à la Fig. 9 qui est centré sur l'axe de l'emballage et pris entre les bords de départ d'enroulement Fia et Tla ou Tla et F2a ou F2a et Fia des feuillets FI, F2 ou feuilles de renfort Tl a une valeur voisine de :Advantageously, the angle α indicated in FIG. 9 which is centered on the axis of the packaging and taken between the winding starting edges Fia and Tla or Tla and F2a or F2a and Fia of the sheets FI, F2 or reinforcement sheets Tl has a value close to:
2 π / nombre de feuillets F et de feuilles de renfort Tl, c'est-à-dire voisine de 120° C à cette Fig.2 π / number of sheets F and reinforcing sheets Tl, that is to say close to 120 ° C in this FIG.
Par ailleurs, les parois interne et externe de l'emballage étant fabriquées dans une matière naturelle Fb, il est possible de faire apparaître sur celles-ci un marquage M réalisé par pyrogravure, comme cela apparaît à la Fig. 7.Furthermore, the inner and outer walls of the packaging being made of a natural material Fb, it is possible to have thereon a marking M produced by pyrography, as it appears in FIG. 7.
Un fond et un couvercle de préférence fabriqués dans une matière naturelle conviennent pour fermer les ouvertures de l'emballage. Le fond et le couvercle peuvent également être pyrogravés.A bottom and a lid preferably made of a natural material are suitable for closing the openings of the packaging. The bottom and the cover can also be pyrographed.
Le fond et le couvercle peuvent, dans un mode de réalisation, être en métal. Le procédé de fabrication de l'invention permet de fabriquer des emballages de section fermée essentiellement réalisés dans une matière naturelle avec un coût de fabrication comparable à ceux fabriqués à partir de feuilles de carton enroulées en hélicoïde.The bottom and the cover may, in one embodiment, be made of metal. The manufacturing process of the invention makes it possible to manufacture packages of closed section essentially produced in a natural material with a manufacturing cost comparable to those produced from sheets of cardboard wound in a helical shape.
Le procédé permet également le marquage des emballages par pyrogravure. Dans une variante d'un mode opératoire non représentée, le ou les feuillets F ou feuilles de renfort Tl peuvent être maintenus autour du mandrin 110 pendant le temps de séchage de la colle par des moyens de serrage, tels que des cerclages, enveloppant la périphérie desdits feuillets F ou feuilles de renfort Tl. Dans une variante d'un mode opératoire non représentée, l'emballage est trempé dans un bain de paraffine pour conférer à ses parois une étanchéité vis-à-vis de l'extérieur.The process also allows the marking of packaging by pyrography. In a variant of an operating mode not shown, the sheet or sheets F or reinforcement sheets Tl can be held around the mandrel 110 during the drying time of the glue by clamping means, such as strapping, enveloping the periphery said sheets F or Tl reinforcement sheets. In a variant of a procedure not shown, the packaging is dipped in a paraffin bath to give its walls a seal against the outside.
Dans une variante d'un autre mode opératoire non représentée, des perforations sont réalisées au travers des feuillets ou feuille(s) de renfort FI, Tl, F2. Ces perforations P sont centrées sur le même axe lors de leurs étapes d'enroulement. On peut prévoir également une étape d'enroulement et de collage d'une feuille de matière plastique transparente S entre deux feuillets ou feuille(s) de renfort FI, Tl, F2 de manière à fermer les perforations P. Un exemple de réalisation d'un emballage de section fermée de type circulaire réalisé par cette variante du mode opératoire du procédé de fabrication est représenté à la Fig. 10. Cet emballage comportent respectivement des perforations P centrées sur le même axe permettant de voir à l'intérieur de l'emballage pour apprécier le(s) produit(s) destiné(s) à être contenu(s) dans celui-ci. Pour éviter l'introduction de poussière à l'intérieur de l 'emballage, les perforations P sont fermées par une feuille de matière plastique transparente S. In a variant of another operating mode, not shown, perforations are made through sheets or reinforcement sheet (s) FI, Tl, F2. These perforations P are centered on the same axis during their winding steps. It is also possible to provide for a step of winding and gluing a sheet of transparent plastic material S between two sheets or sheet (s) of reinforcement FI, Tl, F2 so as to close the perforations P. An embodiment of a closed section packaging of circular type produced by this variant of the operating method of the manufacturing process is shown in FIG. 10. This packaging respectively comprise perforations P centered on the same axis making it possible to see inside the packaging to assess the product (s) intended to be contained therein. To avoid the introduction of dust inside the packaging, the perforations P are closed by a transparent plastic sheet S.

Claims

REVENDICATIONS
1) Procédé de fabrication d'un emballage de section fermée à base de feuillets (FI, F2) formés respectivement d'une feuille de matière naturelle souple (Fb) contrecoUée sur une feuille support (Fc), caractérisé en ce qu'il consiste à enrouler un premier feuillet (FI) autour d'un mandrin (110), le feuillet (FI) étant positionné avec sa feuille de matière naturelle (Fb) tournée vers ledit mandrin (110) de manière à ce qu'elle puisse former la paroi interne dudit emballage, à encoller la paroi externe du feuillet (FI) ou la paroi interne d'au moins un feuillet (F2), à enrouler chaque feuillet (F2) pour le coller autour du premier feuillet (FI) ou d'un feuillet (F2) précédemment enroulé, le dernier feuillet (F2) étant positionné avec sa feuille de matière naturelle (Fb) tournée vers l'extérieur du mandrin (110) de manière à ce qu'elle puisse former la paroi externe de l'emballage, l'étape d'enroulement de chaque feuillet (F2) s'opérant de telle manière que le bord (F2a) de départ d'enroulement du feuillet (F2) ne coïncide pas avec le bord (Fia, F2a) de départ d'enroulement du premier feuillet (FI) ou d'un feuillet (F2) précédemment enroulé. 2) Procédé de fabrication selon la revendication 1, caractérisé en ce qu'il consiste à prévoir, en outre, une étape d'enroulement et de collage d'une feuille de renfort (Tl) entre deux feuillets (FI, F2) ou (F2, F2), l'étape d'enroulement de la feuille de renfort (Tl) s'opérant de telle manière que le bord (Tla) de départ d'enroulement de la feuille de renfort (Tl) ne coïncide pas avec le bord (Fia, F2a) de départ d'enroulement des feuillets (FI, F2).1) Method for manufacturing a closed section packaging based on sheets (FI, F2) formed respectively of a sheet of flexible natural material (Fb) contrecoUée on a support sheet (Fc), characterized in that it consists winding a first sheet (FI) around a mandrel (110), the sheet (FI) being positioned with its sheet of natural material (Fb) facing said mandrel (110) so that it can form the inner wall of said package, to glue the outer wall of the sheet (FI) or the inner wall of at least one sheet (F2), to wrap each sheet (F2) to glue it around the first sheet (FI) or a sheet (F2) previously wound, the last sheet (F2) being positioned with its sheet of natural material (Fb) turned towards the outside of the mandrel (110) so that it can form the external wall of the package , the step of winding each sheet (F2) operating in such a way that the start edge (F2a) for winding the sheet (F2) does not coincide with the start edge (Fia, F2a) for winding the first sheet (FI) or a sheet (F2) previously wound up. 2) The manufacturing method according to claim 1, characterized in that it consists in providing, in addition, a step of winding and gluing a reinforcing sheet (Tl) between two sheets (FI, F2) or ( F2, F2), the step of winding the reinforcing sheet (Tl) taking place in such a way that the starting edge (Tla) of winding the reinforcing sheet (Tl) does not coincide with the edge (Fia, F2a) at the start of the sheet winding (FI, F2).
3) Procédé de fabrication selon la revendication 1 ou 2, caractérisé en ce qu'il consiste à décaler les bords de départ d'enroulement (Fi , Tla, F2a) de deux feuillets ou feuille(s) de renfort (FI, Tl, F2) destinés à être collés mutuellement, d'un angle α centré sur l'axe du mandrin (110) d'une valeur voisine de : 2 π / nombre de feuillets et de feuilles de renfort (FI , Tl , F2).3) Manufacturing method according to claim 1 or 2, characterized in that it consists in shifting the winding starting edges (Fi, Tla, F2a) of two sheets or sheet (s) of reinforcement (FI, Tl, F2) intended to be glued to each other, at an angle α centered on the axis of the mandrel (110) with a value close to: 2 π / number of sheets and reinforcing sheets (FI, Tl, F2).
4) Procédé de fabrication selon l'une des revendications 1 à 3, caractérisé en ce qu'il consiste à réaliser respectivement des perforations (P) au travers des feuillets ou feuille(s) de renfort (FI, Tl, F2), les perforations (P) étant centrées sur le même axe lors de leurs étapes d'enroulement. 5) Procédé de fabrication selon la revendication 4, caractérisé en ce qu'il consiste à prévoir en outre une étape d'enroulement et de collage d'une feuille de matière plastique transparente (S) entre deux feuillets ou feuille(s) de renfort (FI, Tl, F2) de manière à fermer les perforations (P).4) Manufacturing method according to one of claims 1 to 3, characterized in that it consists in respectively producing perforations (P) through the sheets or sheet (s) of reinforcement (FI, Tl, F2), the perforations (P) being centered on the same axis during their winding stages. 5) The manufacturing method according to claim 4, characterized in that it further provides a step of winding and gluing a sheet of transparent plastic material (S) between two sheets or reinforcement sheet (s) (FI, Tl, F2) so as to close the perforations (P).
6) Procédé de fabrication selon l'une des revendications 1 à 5, caractérisé en ce qu'il consiste à chauffer le mandrin (110) pour faciliter l'enroulement de feuillets (F) ou feuilles de renfort (Tl) autour de lui et accélérer le temps de séchage de la colle.6) The manufacturing method according to one of claims 1 to 5, characterized in that it consists in heating the mandrel (110) to facilitate the winding of sheets (F) or reinforcing sheets (Tl) around it and accelerate the drying time of the glue.
7) Procédé de fabrication selon la revendication 6, caractérisé en ce qu'il consiste à établir la température du mandrin (110) autour de 40° C.7) The manufacturing method according to claim 6, characterized in that it consists in establishing the temperature of the mandrel (110) around 40 ° C.
8) Procédé de fabrication selon l'une des revendications précédentes, caractérisé en ce qu'il consiste à presser, par un rouleau de pressage (120), les feuillets ou feuilles de renfort ou feuille de matière plastique transparente (FI, Tl, F2, S) lors de leurs enroulements sur le mandrin (110).8) Manufacturing method according to one of the preceding claims, characterized in that it consists in pressing, by a pressing roller (120), the sheets or reinforcing sheets or transparent plastic sheet (FI, Tl, F2 , S) during their windings on the mandrel (110).
9) Procédé de fabrication selon l'une des revendications précédentes, caractérisé en ce qu'il consiste à maintenir les feuillets ou feuilles de renfort ou feuille de matière plastique transparente (FI, Tl, F2, S) autour du mandrin (110), pendant le temps de séchage de la colle, par des moyens de serrage, tels que des cerclages.9) A manufacturing method according to one of the preceding claims, characterized in that it consists in maintaining the reinforcing sheets or sheets or transparent plastic sheet (FI, Tl, F2, S) around the mandrel (110), during the glue drying time, by clamping means, such as strapping.
10) Procédé de fabrication selon l'une des revendications 1 à 4 ou 6 à 9, caractérisé en ce qu'il consiste à tremper l'emballage dans un bain de paraffine pour conférer à ses parois une étanchéité vis-à-vis de l'extérieur. 11) Emballage de section fermée, l'emballage étant constitué de feuillets10) The manufacturing method according to one of claims 1 to 4 or 6 to 9, characterized in that it consists of dipping the packaging in a paraffin bath to give its walls a seal against the 'outside. 11) Closed section packaging, the packaging consisting of sheets
(F1, F2) formés respectivement d'une feuille de matière naturelle souple (Fb) contrecoUée sur une feuille support (Fc), caractérisé en ce que les feuillets (FI, F2) sont collés par leurs faces en contact, et sont disposés l'un par rapport à l'autre de telle manière que, d'une part, le bord (F2a) de départ d'emoulement de chaque feuillet (F2) ne coïncide pas avec le bord (Fia, F2a) de départ d'enroulement du feuillet (FI) ou d'un autre feuillet (F2) et, d'autre part, que leurs feuilles de matière naturelle (Fb) constituent respectivement les parois interne et externe de l'emballage. 12) Emballage selon la revendication 11, caractérisé en ce que la feuille support (Fc) est une feuille de carton. 13) Emballage selon la revendication 11 ou 12, caractérisé en ce que la matière naturelle de chaque feuille de matière naturelle (Fb) est choisie parmi le bois, le liège ou le cuir.(F1, F2) formed respectively of a sheet of flexible natural material (Fb) contrecoUé on a support sheet (Fc), characterized in that the sheets (FI, F2) are glued by their faces in contact, and are arranged l '' in relation to each other in such a way that, on the one hand, the edge (F2a) of the start of the winding of each sheet (F2) does not coincide with the edge (Fia, F2a) of the start of the winding sheet (FI) or another sheet (F2) and, on the other hand, that their sheets of natural material (Fb) respectively constitute the inner and outer walls of the package. 12) Packaging according to claim 11, characterized in that the support sheet (Fc) is a cardboard sheet. 13) Packaging according to claim 11 or 12, characterized in that the natural material of each sheet of natural material (Fb) is chosen from wood, cork or leather.
14) Emballage selon la revendication 11, 12 ou 13, caractérisé en ce qu'il comporte en outre une feuille de renfort (Tl) disposée entre deux feuillets (FI, F2) ou (F2, F2), le bord de départ d'enroulement (F2a) de la feuille de renfort (F2) ne coïncidant pas avec le bord (Fia, F2a) de départ d'enroulement des feuillets (FI, F2). 15) Emballage selon la revendication 14, caractérisé en ce que la feuille de renfort (Tl) est une feuille de fibres de verre. 16) Emballage selon la revendication 14, caractérisé en ce que la feuille de renfort (Tl) est une feuille de plastique.14) Packaging according to claim 11, 12 or 13, characterized in that it further comprises a reinforcing sheet (Tl) disposed between two sheets (FI, F2) or (F2, F2), the starting winding edge (F2a) of the reinforcing sheet (F2) does not coincide with the starting edge (Fia, F2a) of winding sheets (FI, F2). 15) Packaging according to claim 14, characterized in that the reinforcing sheet (Tl) is a sheet of glass fibers. 16) Packaging according to claim 14, characterized in that the reinforcing sheet (Tl) is a plastic sheet.
17) Emballage selon l'une des revendications 11 à 16, caractérisé en ce que l'angle α centré sur l'axe de l'emballage et pris entre les bords de départ d'enroulement (Fia, Tla, F2a) de deux feuillets ou feuilles de renfort (FI, Tl, F2) adjacents, a une valeur voisine de : 2 π / nombre de feuillets (F) et de feuilles de renfort (Tl).17) Packaging according to one of claims 11 to 16, characterized in that the angle α centered on the axis of the packaging and taken between the winding starting edges (Fia, Tla, F2a) of two sheets or adjacent reinforcement sheets (FI, Tl, F2), has a value close to: 2 π / number of sheets (F) and reinforcement sheets (Tl).
18) Emballage selon l'une des revendications 11 à 17, caractérisé en ce que les ouvertures de l'emballage sont respectivement obturées par un fond et un couvercle fabriqués en bois. 19) Emballage selon l'une des revendications 11 à 18, caractérisé en ce que la paroi externe et/ou le fond ou le couvercle comportent un marquage (M) réalisé par pyrogravure.18) Packaging according to one of claims 11 to 17, characterized in that the openings of the packaging are respectively closed by a bottom and a cover made of wood. 19) Packaging according to one of claims 11 to 18, characterized in that the external wall and / or the bottom or the cover have a marking (M) produced by pyrography.
20) Emballage selon l'une des revendications 11 à 17, caractérisé en ce que les ouvertures de l'emballage sont respectivement obturées par un fond et un couvercle fabriqués en métal.20) Packaging according to one of claims 11 to 17, characterized in that the openings of the packaging are respectively closed by a bottom and a cover made of metal.
21) Emballage selon l'une des revendications 11 à 20, caractérisé en ce que les feuillets ou feuille(s) de renfort (FI, Tl, F2) comportent respectivement des perforations (P) centrées sur le même axe.21) Packaging according to one of claims 11 to 20, characterized in that the sheets or sheet (s) of reinforcement (FI, Tl, F2) respectively comprise perforations (P) centered on the same axis.
22) Emballage selon la revendication 21, caractérisé en ce que les perforations (P) sont fermées par une feuille de matière plastique transparente (S) disposée entre deux feuillets ou feuille(s) de renfort (FI, Tl, F2). 22) Packaging according to claim 21, characterized in that the perforations (P) are closed by a transparent plastic sheet (S) disposed between two sheets or sheet (s) of reinforcement (FI, Tl, F2).
EP02722356A 2001-04-24 2002-03-22 Packaging having a closed section and method for the production thereof Withdrawn EP1436205A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0105597A FR2823696B1 (en) 2001-04-24 2001-04-24 METHOD FOR MANUFACTURING A CLOSED SECTION PACKAGE BASED ON SHEETS, AND A CLOSED SECTION PACKAGE CONSISTING OF SHEETS
FR0105597 2001-04-24
PCT/FR2002/001000 WO2002085719A1 (en) 2001-04-24 2002-03-22 Packaging having a closed section and method for the production thereof

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EP1436205A1 true EP1436205A1 (en) 2004-07-14

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CN113071145A (en) * 2021-04-20 2021-07-06 安徽宏洋包装集团股份有限公司 Processing of white spirit packing carton is with pasting a section of thick bamboo forming device

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US4525396A (en) * 1982-08-13 1985-06-25 Asahi Kasei Kogyo Kabushiki Kaisha Pressure-resistant paper vessel
ES2188167T3 (en) * 1998-05-15 2003-06-16 Scient Generics Ltd PACKAGING FOR CARBONATED DRINKS.
FR2779089B1 (en) * 1998-05-29 2000-09-01 Thierry Ragot METHOD FOR MANUFACTURING A BOX HAVING THE OUTSIDE AND / OR INTERIOR OF WOOD, CORRESPONDING CUT, BOX AND PRESS
US6378763B1 (en) * 1999-06-04 2002-04-30 Sonoco Development, Inc. Window for spirally formed containers

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See references of WO02085719A1 *

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