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
  • B65D9/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of wood or substitutes therefor
  • B65D9/02—Containers of curved cross-section, e.g. cylindrical boxes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
  • B27D—WORKING VENEER OR PLYWOOD
  • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
• • 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
  • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
  • B65D65/38—Packaging materials of special type or form
  • B65D65/46—Applications of disintegrable, dissolvable or edible materials
  • B65D65/466—Bio- or photodegradable packaging materials
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
  • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
  • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
  • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
  • B65D85/72—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials
  • B65D85/76—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials for cheese
• • 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
  • B65D9/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of wood or substitutes therefor
  • B65D9/30—Applications of laminates as wall material, e.g. plywood
• • 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
  • B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
  • B65D81/34—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package
  • B65D81/3446—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging foodstuffs or other articles intended to be cooked or heated within the package specially adapted to be heated by microwaves
  • B65D81/3453—Rigid containers, e.g. trays, bottles, boxes, cups

Definitions

• the present invention relates to the manufacture of a packaging box for food including use, defining a container formed by a peripheral wall, associated with a bottom by connecting means.
• the invention relates to a type of packaging box obtained from a complex consisting of a wooden sheet obtained by slicing or unwinding, on which is reported a flexible material, for example plastic, to constitute a flange or targe with which the bottom is associated by connecting means.
• the present invention relates to this type of product, made from a flexible wood-leaf complex, but to solve a different problem.
• frustoconical packaging for food use such as yoghurt pots or cream, pyramidal trunk trays, or cups, usually plastic, injected or thermoformed, for which it would be interesting to achieve, at least for their sidewall, wood or reduce the thickness of the wall generally plastic, dressing the pot, tray or cup, with wood.
• a pot dressed wood it could be plastic, metal or cardboard or even a molded material based on vegetable fibers. It can also be earthen or other mineral material, as well as woven or non-woven material.
• plastic material metal or ore
• replacing at least partially wood it providing, replacing the plastic (metal or mineral), the necessary rigidity, while partially substituting a renewable material for a non-renewable material.
• the invention proposes to solve this particular problem, specific to frustoconical containers
• a box, pot or packaging tray for food including use, defining a container formed by a peripheral wall associated with a bottom by means linkage, characterized in that said peripheral wall of the container generates a frustoconical or truncated-pyramidal shape volume, said wall being obtained from a complex of wood unrolled or sliced flexible coating, in which is cut a corolla corresponding to the development of the wall, in the direction of the wood fibers or not, to obtain a small diameter container, which can be less than 50 mm.
• a packaging covering for a box, pot or tray, particularly for food use, or a shade defining a volume formed by a wall peripheral, characterized in that said peripheral wall of the container generates a frustoconical or truncal-pyramidal shaped volume, said wall being obtained from any material and dressed with a complex of unrolled or sliced wood - flexible coating, in which is cut a corolla or a blank corresponding to the development of the dressing, in the direction of the wood fibers or not, to obtain a small diameter container, which may be less than 50 mm.
• the corolla-shaped covering constituted by the complex wood-flexible coating is attached to the frustoconical or truncated-pyramidal peripheral wall of the container, obtained from any material, by the method called "In Molding Labeling" (IML).
• IML In Molding Labeling
• Allow the insertion of a container by tightening for example a flower pot made of vegetable fiber.
• the pot, the tray or the cup of origin keep their bottom and possibly their lid, giving them a seal and / or rigidity
• Pot, tray or plastic cup are adapted to pass microwave ⁇ microwave, or oven, if the initial composition so permits.
• the frustoconical wood trim is put in place and linked, for example, to a pot, tray or plastic cup of corresponding shape, by different methods.
• the pot and dressing separable by the end user to, if necessary, to allow sorting at the end of life of the package: on one side, the pot plastic that will be recycled, as it is now; on the other, the targe that can be compostable or biodegradable according to the evolution of the properties of bioplastics (temperature resistance in particular).
• IML Injection Labeling
• a third method consists of a paste operation.
• the complex constituting the peripheral wall of the container, or its covering is made, on the one hand, from a wooden sheet, obtained by unwinding or slicing, and on the other hand, from a film or a flexible material coating.
• the flexible coating may consist of a plastic material, translucent or opaque, for example CPET (Polyethylene Terephthalate Crystallized), PET (Polyethylene Terephthalate), PP (Polypropylene), PLA (Poly-Lactic Acid), PVC (Polyvinyl Chloride), any natural or industrial polymer.
• CPET Polyethylene Terephthalate Crystallized
• PET Polyethylene Terephthalate
• PP Polypropylene
• PLA Poly-Lactic Acid
• PVC Polyvinyl Chloride
• the flexible coating may also be constituted by a metallic material or aluminum. It can also be silicone-based or any other material facilitating demolding, or even natural fibrous materials such as hemp, flax, cotton or silk, or even atificielle, woven or non-woven, paper, cardboard.
• the flexible coating may also be constituted by a combination of at least two of the materials set forth above.
• the flexible coating material will be biodegradable, and / or temperature resistant, and / or water vapor resistant, and / or cold resistant, impervious or porous.
• the film of flexible material is attached at least on the inner face of the wood sheet of the complex by ultrasonic welding or by gluing, by means of an adhesive and / or resistant to temperature, and / or resistant to steam water, and / or resistant to cold, and moisture.
• the plexing is possible on both sides of the wood sheet, or even in several layers made of the same material or of different materials.
• the film of the complex comprising, with the wooden sheet, the wall of the container or its covering is polyethylene terephthalate (CPET), reported by gluing, via an adhesive PUR (polyurethane) mono or bi-component, polyester or cyanoacrylate.
• CPET polyethylene terephthalate
• the film of the complex constituting, with the wooden sheet, the wall of the container or its covering is polypropylene (PP), reported by gluing, via a PUR glue (Polyurethane), polyester or cyanoacrylate.
• the flexible coating of the complex comprising, with the wooden sheet, the wall of the container or its covering is a biodegradable material such as plastic PLA), reported by gluing, via a PUR (Polyurethane), polyester or cyanoacrylate glue, or a biodegradable glue (animal glue or other).
• the flexible coating of the complex constituting, with the wooden sheet, the wall of the container is a biodegradable material, smooth or fibrous, reported by gluing, via PUR (Polyurethane), polyester or cyanoacrylate glue, or a biodegradable glue.
• FIGS. 1a and 1b and 2 represent, in perspective, respectively a frustoconical container of face and back, cited by way of example, and the developed of a corresponding frustoconical cladding cut in a horizontal direction of the wood fibers, intended for dress the container according to figure 1.
• FIGS. 3a and 3b and 4 show, in perspective, respectively a frustoconical container of face and back, identical to the previous one, and the developed one of a corresponding frustoconical cladding cut in a vertical direction of the wood fibers, intended to dress the container according to Figure 3.
• the packaging box is defined by a container 1 formed by a wall 2, associated with a bottom 3, by connecting means.
• the peripheral wall 2 of the container 1 generates a frustoconical shaped volume, said wall being obtained from any material and dressed with a complex 5-6 wood-flexible coating, in which is cut a corolla 4 corresponding to the development of dressing, in the horizontal or vertical direction of the wood fibers.
• the invention could perfectly adapt to a truncated pyramidal shape.
• the invention also applies, as already mentioned, to a container obtained directly from a complex 5-6 wood-flexible coating, in which is cut a corolla corresponding to developed the wall itself of the container , independently, in the direction of the wood fibers or not. As is clearly shown in FIGS.
• the complex is made on the one hand from a wooden sheet 5, and on the other hand from a flexible material coating 6, and to obtain the frustoconical shape sought, we start from a flat cut whose base "b" is an arc of circle, radius "r", the length of which corresponds to the length of the circumference of the base "b” of the container 2 to dress , and therefore the upper part "B '" of the same cost in year t 2 corresponds to a second arc "B" of the cut, radius "R" greater than the first "r".
• This coil age technique is commonly used in the field of furniture veneer, but with very different components and adhesives.
• the flexible coating is assembled (plexed) onto the peeling wood using a laminating machine.
• the wood is glued using glue rollers or a lip nozzle with hot melt glue on which the plexing coating is applied.
• the fact of working from two coils, one for the film, the other for the wood also has the advantage of applying the plexing glue at high temperature (130 °), but this because of the fast speed of lamination avoids the film, if it is plastic to rise too high in temperature, resulting in a change in the molecular structure of the plastic and its loss of resistance to high temperature .
• the glue used preferentially is a polyurethane glue (called PUR) or a polyester glue, these two glues must be food and allow baking.
• the pressure during lamination can be between 4 and 8 bar and the feed speed is between 30 and 50 m / min.
• the application temperature of the adhesive is about 130 ° C.
• the amount of adhesive deposited is about 30 to 50 g / m 2.
• Plexing can also be done by ultrasonic welding or vibration welding or by laser welding. These assembly methods of the wood complex have the advantage of avoiding the use of glue. It is particularly interesting to avoid glue for food packaging especially in direct contact.
• the disadvantage of this method of assembly by ultrasonic welding is that, in the current state of ultrasonic welding techniques, the width of the width of the coil against glued can hardly exceed 200 mm. In addition, the welding speed is slow. This use will therefore be reserved for particular technical productions. • It is also possible to apply a soft coating on both sides of the wood.
• the advantage of such a film complex front and back is: - to improve its holding thus facilitating the production of curved cuts or right angles. to facilitate the printability of the complex.
• the printing can be advantageously performed upstream on the film. to modify its visual appearance for aesthetic reasons (for example, to make it brighter or more matt) to apply a technical film improving the cooking of the contents (burnishing etc.) of being able to assemble the blank on the bottom by welding either by the outside, either from the inside or on both sides, to facilitate the sealing of the package once filled, by vertical external welding (the collar can then be at the same level as the product contained, while for a internal sealing, leave an overhang of about 6 mm for welding).
• the box consists of a collar or "targe" and a background.
• the end of the inner blank can be beveled (by sanding or crushing) to avoid the gap due to the overlap allowance.
• the bottom is made from cardboard covered with a plastic film, or a washer made in the complex wood + coating described above.
• the washer is either stamped or cut with grooved teeth that will be bent before welding.
• the fact of using a complex wood plus plastic film and not a simple sheet of wood allows to cut it in the shape of a corolla:
• the cutting of the corolla can be carried out obliquely, or in all directions, with respect to the fibers of the wood , without breaking it.
• the assembly of the box is done by assembling the targe around the bottom by welding or gluing with a glue resistant to a temperature up to 200 ° for a maximum of 30 minutes (for example a polyester glue or a PUR glue or cyanoacrylate) , then positioning the bottom inside and welding it.
• a glue resistant to a temperature up to 200 ° for a maximum of 30 minutes for example a polyester glue or a PUR glue or cyanoacrylate
• the cardboard bottom will be oriented either rim turned towards the outside of the package (hollow), or rim turned inward.
• the stamped bottom will be flanged inwards in order to have the conicity of the bottom and the conicity of the flange in the same direction.
• This configuration has the advantage of avoiding overheating or inflammation of the wood in the oven and in the microwave because this part of the packaging would not be protected from overheating by the contents (cheese or other).
• the other side of the wall will be inward facing.
• the back of the cardboard not coated with Plastic will be welded on the wood side coated with plastic.
• Cardboard welding on plastic is very good and reduces the external volume of the packaging in relation to the volume contained.
• the opposite configuration with flange of the cardboard facing outwards is also possible since plastic welding on plastic is also excellent (subject to using identical or compatible plastics). By cons in this version, it is difficult to use a bottom stamped because its conicity is opposite to the taper of the collar.
• the bottom has fold tabs, these can be welded indifferently in one direction or the other.
• the complex wood + plastic film allows for multiform packaging by pre-cutting the wood and using the plastic film as a folding hinge.
• the film will be strong enough, so of sufficient thickness for good maintenance of the package at the corners.
• Welding force about 1 N for bonding the washer to the collar. About 4N for assembling the collar.
• the glue used for mounting may be:
• the method also relates to the manufacture of a multilayer flexible wood complex package whose outer face is made of wood-optionally coated externally with a transparent film-made by incision, folding and welding from a coil of said complex, said manufacture taking place just before filling, then is closed and soldered.
• the invention relates to the packaging box obtained from the method which has just been described, but also applies to a simple bottomless flange, for example to surround the pies.
• the production of the flexible complex can advantageously be carried out by ultrasonic welding or by bonding with a biodegradable adhesive, in the case of complexes made with a biodegradable film, for example of the PLA type, polylactic acid, or based on starch, which makes it possible to recover end-of-life packaging by composting or anaerobic digestion since it is made entirely of biodegradable materials.
• a biodegradable film for example of the PLA type, polylactic acid, or based on starch
• the assembly of the ends of the flange or targe on themselves is also performed by ultrasonic welding.
• the ultrasonic assembly avoids the diisocyanate emanations during assembly of the packaging.
• the biodegradable films used only allow the product to be reheated at 50 ° C. Furthermore, the ultrasonic welding limits, on the one hand, the speed of production of the complex, and on the other hand the width of the the width of the complex at about 20 CM.
• the invention also relates to the production of a lid according to the same process for obtaining the box or container, that is to say from a complex wood - flexible coating as described.
• the lid is provided with a filling valve.
• Said cover is reentrant, its outer peripheral wall being identical in material to the inner material of the container, in order to ensure vertical welding after or before filling, according to whether the lid has a filling valve or not.
• It includes a precut device for easy opening.
• the invention can also find an application in another field, which is that of the covering lampshades or luminous wall lights based on wood, to obtain an aesthetic and translucent appearance through the use of a flexible complex wood + translucent polymer.
• Such lampshades may have a truncated or truncated pyramidal shape, as in the case of a container.
• PUR glue and PET film makes this coating heat resistant to a lamp.
• An application of the invention may also be found in pots or horticultural pots.

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• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Mechanical Engineering (AREA)
• Wood Science & Technology (AREA)
• Biodiversity & Conservation Biology (AREA)
• Forests & Forestry (AREA)
• Wrappers (AREA)
• Cartons (AREA)
• Making Paper Articles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=40651323

Family Applications (1)

Country Status (3)

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Family Cites Families (5)

• 2008
  • 2008-10-15 FR FR0857010A patent/FR2937012B1/fr not_active Expired - Fee Related
• 2009
  • 2009-10-14 EP EP09756023A patent/EP2344305A1/de not_active Withdrawn
  • 2009-10-14 WO PCT/FR2009/051957 patent/WO2010043817A1/fr active Application Filing

Non-Patent Citations (1)

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