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
  • B65D3/26—Opening arrangements or devices incorporated in, or attached to, containers
  • B65D3/261—Opening arrangements or devices incorporated in, or attached to, containers the opening arrangement being located in the container side wall
  • B65D3/262—Opening arrangements or devices incorporated in, or attached to, containers the opening arrangement being located in the container side wall forming a circumferential line of weakness
• • 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
  • B31C—MAKING WOUND ARTICLES, e.g. WOUND TUBES, OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
  • B31C1/00—Making tubes or pipes by feeding at right angles to the winding mandrel centre line
  • B31C1/02—Machines therefor having additional mandrels
• • 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
  • 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 tubular packaging comprising an inner sheath made of a waterproof, fragile and flexible material and an outer body made of cardboard closed at both ends by two plugs, the outer body being provided between the two. shutters of a precut located in a plane transverse to the axis of the tube to facilitate the opening of the packaging, as well as an installation for the implementation of the process.
• the most frequently used composite tubular packaging comprises a body formed of a rigid material consisting of one or more layers of cardboard, an outer label and an inner complex intended to ensure by its composition, on the one hand , the tightness of the packaging and, on the other hand, the compatibility of this complex with the packaged product.
• this complex comprises a layer of paper, a layer of aluminum and a protective coating allowing neutral contact between the aluminum and the product.
• These packages often have a metal bottom which is crimped onto the body after filling.
• the cover often consists of an aluminum membrane ensuring the inviolability of the box and a re-entrant or styling plastic cover allowing, on the one hand, to ensure the protection of the membrane before use and, on the other hand, the filling of the packaging after extraction from the membrane.
• This type of packaging using several materials for the manufacture of the main body, the bottom, the cover and the protective membrane are relatively high cost and pose ecological problems, in particular for the elimination of waste.
• a body forming device is used, an aluminum membrane is generally provided with or without an easy opening system, a molded plastic cover is placed on this membrane, a respectable weight to obtain sufficient rigidity.
• the closure after filling is of the type with crimping of a metal bottom (steel, tinplate or aluminum) which is also produced on heavy and complex machines.
• a metal bottom steel, tinplate or aluminum
• the opening systems are always made on the top of the box, which makes it impossible to present the product if it is for example savory sticks, long cookies.
• the present invention aims to overcome the aforementioned drawbacks by proposing a method of manufacturing an economical and ecological packaging easy to recycle and capable of packaging a very large number of food, industrial products, and in particular products which must be presented exceeding of the box body when the cover is removed.
• the method according to the invention is characterized by the following steps: the inner sheath is formed by sealing the two longitudinal ends of the material leaving a coil and passing through a shaping device ensuring the tubular formation of the sheath;
• a cardboard is glued onto the sheath, the width of which corresponds to the periphery of the packaging and the length to the height or an integer multiple of the height of the packaging;
• one of the ends of the packaging is sealed off
• the packaging is filled with the product to be packaged and the other end is also sealed.
• the advantages of the packaging according to this method are as follows: the fact that the sheath is glued to the interior of the external body makes it possible, when pressing on the precut by slightly crushing the exterior body, to break at the same time as the precut sheath. Then, by applying a traction on the two parts of the body, one obtains the separation in two parts of the packaging thus allowing to present the product which is conditioned and which usually is an oblong product which exceeds the lower part of the body.
• the nature of the waterproof and fragile sheath allows this realization while ensuring a seal perfect and proof of the inviolability of the packaging before the first opening.
• this flange allows you to easily close the packaging after opening it. Relative sealing is also ensured in this way since the upper part of the packaging can be positioned around the flange.
• the operations for forming the tube in particular the formation of the sheath and the placing of the outer carton and the cutting into individual packages are carried out continuously and in synchronism, which ensures a good rate of installation.
• the invention also relates to an installation for implementing the method comprising a forming mandrel whose cross section corresponds to the shape of the tube to be formed, of a shaping device placed around the mandrel for the formation of the sheath from the coil. , means for advancing the sheath, means for sealing two longitudinal ends of the sheath, a device for feeding sheets for forming the external body, means applying an adhesive to the internal face of said sheets, means making it possible to apply said sheet against the sheath, means for advancing the tube formed, means for cutting into individual packages, means for closing off one end of the packaging and the second after filling.
• This installation allows the formation of the main part of the packaging and in particular the formation of the external body by bonding it directly to the sheath by means making it possible to turn around the mandrel to apply the sheet directly to the sheath.
• the means for applying said sheet against the sheath comprise a first hollow cylinder provided according to two generatrices with a series of radial holes communicating with two individual vacuum chambers, the peripheral distance of two generatrices corresponding to at least approximately the width of the sheets, said hollow cylinder being mounted on a device making it possible, on the one hand, to apply it against the mandrel and, on the other hand, to make it roll on said mandrel with the sheath.
• this hollow cylinder makes it possible to grasp one of the ends of the sheet which will form the longitudinal joint of the tube by activating the vacuum in one of the chambers, and then to take charge of the cardboard sheet against the vacuum cylinder as the latter rotates around its axis and when the second end of the sheet arrives on the cylinder, the vacuum is activated in the second chamber, which makes it possible to have the cardboard pressed against the cylinder with the part provided with adhesive towards the outside. Then by applying the cylinder against the mandrel with the sheath, the cardboard is rolled up by gluing it directly on the sheath by the fact that the hollow cylinder rolls on the mandrel and therefore the sheath.
• the means making it possible to apply said cylinder to the mandrel and to make it roll comprise two rotary plates concentric with the mandrel and supporting through a system for copying the shape of the body of the tube to form bearings supporting said hollow cylinder.
• said copying device consists for each plate of two jacks making it possible to approach or move said cylinder away from the mandrel and to hold it against the lateral surface of the mandrel to enable it to roll on the mandrel.
• all of the means of the installation are synchronized to allow continuous work
• the sheet feeding device, the device for applying the adhesive and the device for applying the sheet against the mandrel and the means for cutting into individual tubes are mounted on trolleys provided with means for being able to be moved between predetermined positions forward and backward.
• the arrangement of the shaper and of the device making it possible to apply the hollow cylinder against the mandrel is arranged so that the seals obtained along the sheath and that of the outer body are opposite by at least approximately 180 °.
• the installation comprises a device for shaping and sealing or gluing a flange inside the tube.
• Figure 1 is a schematic representation of an installation for forming the tube.
• Figure 2 is a variant of the shape of the mandrel.
• Figures 3, 4 and 5 show from the side the device for winding the cardboard sheet on the sheath.
• Figure 6 is a sectional view of the finished package.
• Figure 7 shows the use of this packaging and in particular its opening.
• a coil 1 of a flexible and fragile material consisting of a waterproof film such as aluminum or barrier plastic on which a varnish or plastic sealing agent such as polyethylene is applied is placed on an unwinding system 2.
• This material will form sheath.
• the sheath is formed by a shaping device 3 surrounding a mandrel 4.
• the sheath thus formed is driven by two belt pads (not shown in this figure), said pads being driven by a motor and placed on either side of the mandrel immediately after the forming system.
• the flexible material is folded in on itself so as to face the sealing layer, so that a tight sheath is obtained.
• the sealing is ensured at the exit of the conformator by a sealing device 5 by heat conduction or ultrasound or high frequency or the like.
• the sealed sheath thus formed continuously is driven by the pads on the mandrel 4.
• each sheet 6 consists of a carton having a length corresponding to two packages, but the number of packages that can be formed with one sheet of course depends on the size of the packages and the choice that we did at the start. Therefore, depending on the size, one or more sheets can be formed from each sheet.
• the magazine with the sheets 6 is placed opposite the sheet forming system and a destacking system picks up the sheets from the magazine and sends it to a gluing system consisting of two cylinders 7 and 8. On the face of each sheet 6 intended to come into contact with the sheath, an adhesive is deposited by the cylinder 7.
• the sheet is supported by a hollow cylinder 9 provided on two generators with a series of holes 10 (in the figure we see only one series of holes), each series of holes communicating with a chamber vacuum inside the cylinder, the vacuum chambers being controlled by a system of individual valves.
• a vacuum is created in the corresponding chamber and thus the end of the sheet is pressed against the cylinder 9.
• the cylinder 9 rotates around its axis and when the other end of the sheet reaches the second series of holes, the vacuum is also created and in this way the sheet remains pressed completely against the cylinder 9 held by the vacuum.
• the distance between the two series of holes is at least approximately equal to the width of the sheet used.
• the sheet with the glue on the outer face is supported by the cylinder 9 which will first move against the sheath which is already on the mandrel and will roll against this sheath to apply the leaf.
• the cylinder 9 comes into contact with the sheath along one end of the sheet, the corresponding vacuum chamber is deactivated, so that the end of the sheet can remain in contact with the sheath.
• the second end of the sheet comes into contact and in particular the latter overlaps the end already glued against the sheath, the second vacuum chamber is neutralized, thus leaving the second end to stick to the first.
• the tube thus obtained is supported by belt shoes 11 (such as those located at the outlet of the shaping device and not shown) to advance the tube thus obtained towards a cutting or cutting device with knives 13.
• belt shoes 11 such as those located at the outlet of the shaping device and not shown
• the counter-roller 12 and the knives press against the sheath and rotate around the tube to cut the rolled cardboard sheet and also to cut the sheath which is found stuck on the cardboard.
• the cylinder 12 and the knife 13 move away and the carriage returns to its place for the rest.
• Figure 2 we have shown a variant of a tube obtained by a similar device, namely an approximately rectangular box. If one wishes to obtain such a packaging, the mandrel 4 will have a corresponding shape. By means of the device described, practically any desired shape can be obtained, it suffices to have a mandrel having this shape. It should be noted that during the gluing of the sheet 6 on the sheath, it is made so that the overlap of the two glued ends of the sheath and the two ends of the carton are in opposition in order to cancel the deformation constraints and avoid also the formation of superimposed beads.
• the different steps described above can be done step by step, that is to say after the formation of the sheath, when it arrives facing the gluing system of the cardboard sheets, the installation stops until that the cardboard is glued, then we pass in front of the knives, we stop and so on.
• Another possibility is to do everything continuously and, in this case, the stock of sheets 6, the gluing system 7, 8, the vacuum cylinder 9 and the cutting device 12, 13 are mounted on carriages following the movement of the sheath so that the work can be done in synchronism. These carriages therefore perform a back and forth work between two predetermined positions.
• FIG 3 there is shown seen from the side a device which consists in principle of two plates 15 concentric with the mandrel 4 supporting the ends of the hollow cylinder 9.
• the hollow cylinder 9 rests on two bearings 16, one at each end.
• the bearings 16 are supported by two jacks 17 mounted on a support 18, the support 18 being integral with the plate 15.
• Figure 3 there is shown the starting position.
• We see the gluing cylinder 7 which is in contact with a cylinder 7 'which itself takes the adhesive or glue in a container 7''.
• the sheet 6 with its underside provided with adhesive comes towards the vacuum cylinder 9 and when the end of the sheet reaches the first row of holes 10, the corresponding vacuum chamber (not shown) is activated and the end of the sheet is pressed against the cylinder.
• the cylinder 9 rotates in the direction of the arrow and it drives the sheet 6 held by its end pressed against the cylinder because of the suction through the holes 10.
• the corresponding vacuum chamber is also activated and thus the sheet 6 is pressed against the cylinder 9.
• the two jacks 17 are activated and the cylinder 9 comes to bear against the mandrel 4 carrying the sheath.
• the corresponding row of holes 10 is deactivated, which makes it possible to obtain bonding of the end of the sheet against the sheath.
• the plates 15 rotate 360 ° around the mandrel 4 in the direction of the arrow and the rolling of the cylinder 9 against the mandrel 4 is thus obtained, which makes it possible to glue the sheet of cardboard against the sheath, cylinder 9 always rolling in the direction of the arrow indicated on the drawing.
• the second series of holes is deactivated, which allows to stick the end of the sheet on the first.
• the jacks 17 move the cylinder 9 away and the process can start again with the next sheet.
• these operations can be done in synchronism with the advancement of the sheath, the device being mounted on a carriage which moves in parallel and at the speed of the sheath, either can be done in stages and, in this case, the device for placing the cardboard on the sheath is not moved in the transverse direction and the knives are then placed in opposition to the vacuum cylinder.
• the cylinder 9 will follow the contour of the mandrel, the jacks 17 making it possible to adapt to the profile.
• the box body 20 obtained by this means consists of the inner sheath 21 and the outer carton 22 and is placed on a turntable for the installation of the upper shutter 23, as well as the optional installation of a inner flange 24.
• the flange 24 previously shaped in flexible cardboard and coated with a sealant product in the shape and internal dimensions of the box is introduced from the lower part.
• the cardboard collar is glued or sealed at its base 25 by a heated punch near the pre-cut 26 where the opening of the box will be located thereafter.
• the the collar is thus mounted positioned approximately half on the pre-cut line and the other half above it. Its position and profile ensure the establishment of the cover after the opening of the box, when all of the packaged products are not consumed.
• a cardboard disc 32 made of a cardboard similar or identical to that used for the body of the box is laminated with a barrier film 27 or plastic with a sealant and cut into shape. It is simultaneously stamped into the shape of the box and placed inside.
• a tool provided with a sealing system by heat conduction or ultrasound or high frequency places the obturator 23 thus obtained in its sealing position sealingly, its wall being glued against that of the body of the box and in particular the sheath 21
• the body of the box is then hemmed, which consists in folding the end of the body 22 inwards, then it is pressed strongly to ensure good retention of the shutter 23.
• the box is sent to the filling station and when the weight control or other controls are carried out, the lower shutter 28 is also placed, consisting of a cardboard disc 29 provided with a similar or identical barrier film 30 to the film 27 and thereafter by the same means as previously, this shutter is sealed at the bottom of the housing.
• a slight vacuum is applied to the interior of the box to compress the volume generated by the bottom.
• the box thus obtained is represented in FIG. 7 according to different positions, the box comprising the body 22 with the precut 19 carries an indication 30, 31 indicating where it is desirable that the consumer presses, for example, with his thumb, to obtain the tear of the precut and at the same time also obtain the tear of the inner sheath as shown in the second figure.
• the indication of the location to be inserted is arbitrary but preferably not at the locations where the longitudinal joints of the sheath and the outer tube are located.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Making Paper Articles (AREA)
• Auxiliary Devices For And Details Of Packaging Control (AREA)
• Wrapping Of Specific Fragile Articles (AREA)
• Containers And Plastic Fillers For Packaging (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=29763869

Family Applications (1)

Country Status (7)

Families Citing this family (11)

Family Cites Families (12)

• 2002
  • 2002-07-15 FR FR0208914A patent/FR2842170B1/fr not_active Expired - Lifetime
• 2003
  • 2003-07-10 DE DE60302795T patent/DE60302795T2/de not_active Expired - Fee Related
  • 2003-07-10 WO PCT/IB2003/003087 patent/WO2004007186A1/fr not_active Ceased
  • 2003-07-10 EP EP03740971A patent/EP1521673B1/de not_active Expired - Lifetime
  • 2003-07-10 AT AT03740971T patent/ATE312707T1/de not_active IP Right Cessation
  • 2003-07-10 US US10/521,032 patent/US20050223680A1/en not_active Abandoned
  • 2003-07-10 AU AU2003280971A patent/AU2003280971B2/en not_active Ceased

Non-Patent Citations (1)

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