EP3201394B1 - Procédé et dispositif de production d'une pièce moulée fibreuse - Google Patents

Procédé et dispositif de production d'une pièce moulée fibreuse Download PDF

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Publication number
EP3201394B1
EP3201394B1 EP15775661.0A EP15775661A EP3201394B1 EP 3201394 B1 EP3201394 B1 EP 3201394B1 EP 15775661 A EP15775661 A EP 15775661A EP 3201394 B1 EP3201394 B1 EP 3201394B1
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EP
European Patent Office
Prior art keywords
moulding
screen
fibre
sleeve
tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP15775661.0A
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German (de)
English (en)
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EP3201394A1 (fr
Inventor
Christer Halvardsson
David Kjellin
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.)
SIG Combibloc Services AG
Original Assignee
SIG Technology AG
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Priority to PL15775661T priority Critical patent/PL3201394T3/pl
Publication of EP3201394A1 publication Critical patent/EP3201394A1/fr
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J5/00—Manufacture of hollow articles by transferring sheets, produced from fibres suspensions or papier-mâché by suction on wire-net moulds, to couch-moulds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21J—FIBREBOARD; MANUFACTURE OF ARTICLES FROM CELLULOSIC FIBROUS SUSPENSIONS OR FROM PAPIER-MACHE
    • D21J7/00—Manufacture of hollow articles from fibre suspensions or papier-mâché by deposition of fibres in or on a wire-net mould

Definitions

  • the invention relates to a method and an apparatus for producing a fiber molding, in particular a head or bottom element for beverage containers.
  • Folded beverage containers made of fiber composites have long been known in a variety of configurations. The most common are those containers that are made of a single blank of a cardboard / plastic composite. However, there are also multi-part container known in which the head and / or bottom element is inserted into a tubular packing jacket and connected to this / or in which initially a one-sided open container is produced by appropriate folding of one end, in the then one Cover element is used, as for example from the US 4,527,699 or even from the EP 0 893 355 A2 is known in which used head and bottom elements are used in plastic.
  • multi-part packaging containers in which a separately manufactured head and / or bottom element is / are used, the parts used are produced as fiber molded parts from pulp, ie from a fibrous slurry of pulp. That's how it describes DE 10 2010 014 993 A1 which is assigned to the assignee of the present patent application, a container and a method for producing a container, in which a tubular base body is provided with at least one fiber molded part connected to the main body to form a liquid-tight beverage container.
  • the fiber molded part is gas- and liquid-tight coated, so that a container produced in this way can also serve as an aseptic packaging container, as it is needed for some foods or drinks.
  • Fiber-molded parts and their production facilities / methods have long been known from various applications.
  • EP 1 439 264 A1 a special coated drinking cup proposed.
  • the precipitated fibers are pressurized by means of an inflatable pressing element over the entire inner geometry of the cup and a vacuum is applied to the opposite side in order to dry the fiber material.
  • a special tool which consists of a first solid-elastic pressing element and a second, can be inflated by a fluid pressing member.
  • the pressing elements act at the same time to form the fiber molding, to drain and thus to dry.
  • the second inflatable pressing element allows a pressure in the region of the undercut geometry of the handle.
  • the fiber molding so special demands are made.
  • the fiber molding should have a smooth surface in order to be coated more easily, d. H. no individual fibers should protrude from the fiber molding.
  • the seam area must also be so strong and compact that it can be easily connected to the tubular end of a packing jacket or package open on one side. Joining is usually done by means of a thermal seal under mechanical pressure.
  • the object is achieved in a device having the features of claim 11, characterized in that in the region of the peripheral edge of the forming wire extending around cuff is provided, which extends below the edge of the forming wire around the mold around and from a basic position can be inflated to a working position is, and that the sleeve is arranged on the tool holder.
  • the forming wire used for it wets relatively evenly, so that the molded part thus produced has substantially the same thicknesses throughout.
  • the invention has now recognized that a fiber molding of any geometry can be made particularly advantageous in that the peripheral edge region can be provided at the end edge of the fiber molding with a particularly dense and stable fiber view, if this immediately after the condensation of the forming wire, the fiber material in Area of the peripheral edge of the forming wire is compressed by inflating an outer sleeve in the area in which the subsequent sealing takes place with the remaining part of the beverage container. According to the invention, no additional tools are necessary and it keeps the design effort by providing an inflatable cuff together with air supply / s within manageable limits.
  • Another teaching of the invention provides that the top of the fiber molding is sprayed with water before it is removed from the forming wire. In this way, the precipitated fibers are evenly distributed.
  • the fiber molded part is spent after removal on a pressing tool with a matching geometry to the fiber molding and mechanically compacted there with a lowerable on the mandrel punch.
  • the outer surface of the fiber molding and its inner structure can be further improved, since the fiber molding still has a sufficient residual moisture and therefore further deformable or compactable at this stage.
  • the forming wire can be acted upon from the inside so that both a negative pressure for depositing the outer fibers and an overpressure for releasing and removing the fiber molding can be applied. In this way, the fibers settle faster and more evenly and can be very easily detached from the screen surface, as well as also remove pneumatically from the tool or forming wire.
  • Another embodiment of the invention provides that the fiber molding is dried after removal. Such drying can be carried out in a known manner by means of compressed air and / or by means of the supply of thermal energy.
  • a further teaching of the invention provides that the inner and possibly also the outer surface of the fiber molded part is / are coated gas-tight and / or liquid-tight. A gas- or liquid-tight coating is always necessary if the drinks packages provided with such a shaped fiber part are to be filled with liquid products.
  • the peripheral edge of the fiber molding and optionally an opening located in the fiber molding part is cut or introduced, wherein the cutting or insertion can be done by cutting, punching or by means of a laser.
  • the tool holder with the forming wire and the sleeve arranged on the tool holder can be easily cleaned by spraying with water.
  • a further teaching of the invention with regard to the device used provides that a mold corresponding to the shape of the fiber molding is arranged with a plurality of air channels in the interior of the forming wire.
  • the air ducts preferably run from at least one central supply line to different points of the outer surface of the molding tool.
  • a particularly elegant structural design can be achieved in that the collar is clamped inwardly from the forming wire or the forming tool and outwardly by a holding plate pressure-tight on the tool holder. In this way, an optimal seal can be achieved and is also the replacement of a cuff to be replaced with little technical effort to accomplish.
  • a circumferential air duct is provided below the sleeve, which has at least one connecting line for supplying and discharging compressed air. That way is ensures that a uniform inflation of the sleeve takes place in order to achieve an equally uniform compression of the lower edge of the fiber molding.
  • the mesh size of the wire mesh for the forming wire is between 40 mesh to 62 mesh, preferably 49 mesh. This can be achieved with the fibers used good surface qualities with sufficient drainage
  • the forming wire is formed as a positive mold and the sleeve is arranged at the bottom of the forming wire.
  • the forming wire is formed as a negative mold and the sleeve is arranged at the upper edge of the forming wire.
  • the cuff is made of fluoroelastomer in order to give the cuff a long life.
  • a forming wire 1 which extends along the outer contour of a molding tool 2.
  • the mold 2 is hollow on the inside and has a plurality of channels 3, which are executed in the illustrated preferred embodiment as bores extending from the surface of the mold 2 at suitable locations to the hollow interior of the mold 2.
  • the mold 2 is located on a tool holder 4 and is connected with only partially visible screws 5 from below with this.
  • the tool holder 4 has a central supply line 6, which may also be designed as a bore.
  • a mounting plate 7 which in turn has a central supply line for the air supply of the mold 2.
  • a preferably designed as an O-ring seal 8 provides the necessary tightness of the contact area between the tool holder 4 and mounting plate 7.
  • An inflatable cuff 9 is present, at its inner end of the mold 2 with the tool holder 4 and the outer End of an attached plate 10 is clamped.
  • Below the sleeve 9 runs a the shape of the sleeve 9 corresponding circumferential air duct 11, which will be described in more detail below.
  • Fig. 2 which is a plan view of the device according to Fig. 1 shows clearly shows that the mold 2 is designed asymmetrically and that the uplifting neck is arranged eccentrically to the vertical axis of the Faserfomteils.
  • Fig. 3 has essentially the same structure as Fig. 1 However, here are clearly arranged below the circumferential annular channel 11 supply channels for a compressed air connection 12, in the illustrated and preferred embodiment, double present shown.
  • the entire device is immersed in a pulp slurries, so that the entire forming wire 1 is surrounded by pulp.
  • the forming wire 1 is evenly fogged and the fiber molding dissolves from the screen structure by generating a pressure in the interior of the forming wire 1 through the bore 6 and the channels 3.
  • the all-around extending sleeve 9 by appropriate Compressed air supply inflated through the terminals 12, so that the lower edge of the fiber molding uniformly compressed by the outwardly bulging cuff.
  • the fiber molding can be removed by increasing the pressure on the channels 3 from the mold 2.
  • a thus prepared fiber molding F is in Fig. 4 shown, for better representation of the contour according to Formsieb 1 or mold 2 is the fiber molding F "upside down". It can be seen clearly a uniform circumferential edge R, which is required for the sealing with a tubular beverage container shell (not shown). Furthermore, one clearly recognizes a socket S pointing downwards in this illustration, which is suitable for receiving a screw cap.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Paper (AREA)
  • Making Paper Articles (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Closures For Containers (AREA)
  • Apparatus For Making Beverages (AREA)
  • Non-Alcoholic Beverages (AREA)
  • Packages (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)

Claims (18)

  1. Procédé de fabrication d'un élément de tête ou de fond formé à partir d'une pièce moulée en fibres (F) et prévu pour un contenant formant emballage pour boissons, ledit procédé comprenant les étapes suivantes consistant :
    - à plonger un tamis de moulage (1) disposé sur un porte-outil (4) et qui s'étend le long du contour extérieur d'un outil de moulage (2), dans un dépôt de pulpe contenant des fibres, pour couvrir le tamis de moulage (1) d'un matériau fibreux,
    - à relever le porte-outil (4), pour que le tamis de moulage (1) recouvert du matériau fibreux soit complètement sorti du dépôt de pulpe,
    - à comprimer le matériau fibreux dans la zone d'un bord circulaire du tamis de moulage (1), par gonflement d'une manchette (9) s'étendant tout autour de l'outil de moulage (2) et dans la zone du bord circulaire du tamis de moulage (1),
    - à relâcher la pression dans la manchette (9),
    - à retirer du tamis de moulage (1), la pièce moulée en fibres (F),
    - à placer la pièce moulée en fibres (F) sur un outil de compression et
    - à compacter mécaniquement la pièce moulée en fibres (F), sur l'outil de compression, avec une géométrie correspondant à la pièce moulée en fibres (F).
  2. Procédé selon la revendication 1,
    caractérisé
    en ce que la partie supérieure de la pièce moulée en fibres (F) est encore aspergée d'eau, avant que ladite pièce moulée en fibres soit retirée du tamis de moulage (1).
  3. Procédé selon la revendication 1 ou 2,
    caractérisé
    en ce que le tamis de moulage (1) peut être alimenté avec de l'air provenant de l'intérieur, de manière telle qu'il puisse se produire aussi bien une dépression servant au dépôt du matériau fibreux, qu'une surpression servant au détachement et à l'enlèvement de la pièce moulée en fibres (F).
  4. Procédé selon l'une quelconque des revendications 1 à 3,
    caractérisé
    en ce que la pièce moulée en fibres (F) est séchée après avoir été retirée.
  5. Procédé selon la revendication 4,
    caractérisé
    en ce que le séchage se produit avec de l'air comprimé.
  6. Procédé selon la revendication 4,
    caractérisé
    en ce que le séchage se produit au moyen d'une énergie thermique fournie.
  7. Procédé selon l'une quelconque des revendications 1 à 6,
    caractérisé
    en ce que la surface intérieure et aussi, le cas échéant, la surface extérieure de la pièce moulée en fibres (F) est / sont recouverte(s) en étant étanche(s) aux gaz et/ou aux liquides.
  8. Procédé selon l'une quelconque des revendications 1 à 7,
    caractérisé
    en ce que l'arête circulaire de la pièce moulée en fibres (F) et, le cas échéant, une ouverture se trouvant dans la pièce moulée en fibres (F) est coupée à la longueur ou bien formée.
  9. Procédé selon la revendication 8,
    caractérisé
    en ce que la coupe, à la longueur, de l'arête, ou bien la formation de l'ouverture, est réalisée par découpe, par matriçage ou au moyen d'un laser.
  10. Procédé selon l'une quelconque des revendications 1 à 9,
    caractérisé
    en ce que le porte-outil (4) comprenant le tamis de moulage (1) et la manchette (9) est nettoyé par aspersion d'eau.
  11. Dispositif de fabrication d'un élément de tête ou de fond formé à partir d'une pièce moulée en fibres (F) et prévu pour un contenant formant emballage pour boissons, ledit dispositif comprenant un porte outil (4) et un tamis de moulage (1) disposé sur ledit porte-outil, lequel tamis de moulage s'étend le long du contour extérieur d'un outil de moulage (2),
    caractérisé
    en ce qu'il est prévu une manchette (9) s'étendant tout autour dans la zone du bord circulaire du tamis de moulage (1), manchette qui s'étend, au-dessous du bord du tamis de moulage (1), tout autour de l'outil de moulage (2) et qui, à partir d'une position de base, peut être gonflée dans une position de travail, et en ce que la manchette (9) est disposée sur le porte-outil (4).
  12. Dispositif selon la revendication 11,
    caractérisé
    en ce que l'outil de moulage (2) disposé à l'intérieur du tamis de moulage (1) correspond à la forme de la pièce moulée en fibres (F) et présente une multiplicité de conduits d'air (3).
  13. Dispositif selon la revendication 12,
    caractérisé
    en ce que les conduits d'air (3) s'étendent depuis au moins une conduite d'alimentation centrale (6) jusqu'à des emplacements les plus divers de la surface extérieure de l'outil de moulage (2).
  14. Dispositif selon l'une quelconque des revendications 11 à 13,
    caractérisé
    en ce que la manchette (9) est serrée sur le porte outil (4) en étant étanche sous pression, vers l'intérieur par rapport au tamis de moulage (1) ou par rapport à l'outil de moulage (2) et vers l'extérieur par rapport à une plaque de support (10).
  15. Dispositif selon l'une quelconque des revendications 11 à 14,
    caractérisé
    en ce qu'il est prévu, au-dessous de la manchette (9), un conduit d'air (11) guidé autour du tamis de moulage (1), conduit d'air qui présente au moins un raccord d'alimentation en air comprimé (12) servant à l'arrivée ou à l'évacuation d'air comprimé.
  16. Dispositif selon l'une quelconque des revendications 11 à 15,
    caractérisé
    en ce que le tamis de moulage (1) est conçu comme une forme positive, et la manchette (9) est disposée sur le bord inférieur du tamis de moulage (1).
  17. Dispositif selon l'une quelconque des revendications 11 à 15,
    caractérisé
    en ce que le tamis de moulage (1) est conçu comme une forme négative, et la manchette (9) est disposée sur le bord supérieur du tamis de moulage (1).
  18. Dispositif selon l'une quelconque des revendications 11 à 17,
    caractérisé
    en ce que la manchette (9) est en élastomère fluoré.
EP15775661.0A 2014-09-30 2015-09-29 Procédé et dispositif de production d'une pièce moulée fibreuse Active EP3201394B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15775661T PL3201394T3 (pl) 2014-09-30 2015-09-29 Sposób i urządzenie do wytwarzania kształtki włóknistej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014114187.3A DE102014114187B4 (de) 2014-09-30 2014-09-30 Verfahren und Vorrichtung zur Herstellung eines Faserformteils und danach hergestelltes Faserformteil
PCT/EP2015/072367 WO2016050737A1 (fr) 2014-09-30 2015-09-29 Procédé et dispositif de production d'une pièce moulée fibreuse

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Publication Number Publication Date
EP3201394A1 EP3201394A1 (fr) 2017-08-09
EP3201394B1 true EP3201394B1 (fr) 2019-05-08

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Country Status (14)

Country Link
US (1) US10309062B2 (fr)
EP (1) EP3201394B1 (fr)
JP (1) JP2017530266A (fr)
CN (1) CN107075815B (fr)
AU (1) AU2015327012A1 (fr)
BR (1) BR112017006288A2 (fr)
DE (1) DE102014114187B4 (fr)
ES (1) ES2727650T3 (fr)
MX (1) MX2017003212A (fr)
PL (1) PL3201394T3 (fr)
RU (1) RU2017114908A (fr)
TR (1) TR201907911T4 (fr)
WO (1) WO2016050737A1 (fr)
ZA (1) ZA201701679B (fr)

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CN107075815A (zh) 2017-08-18
BR112017006288A2 (pt) 2017-12-12
CN107075815B (zh) 2019-01-11
PL3201394T3 (pl) 2019-09-30
JP2017530266A (ja) 2017-10-12
DE102014114187A1 (de) 2016-03-31
WO2016050737A1 (fr) 2016-04-07
RU2017114908A3 (fr) 2019-07-26
RU2017114908A (ru) 2018-11-02
ZA201701679B (en) 2018-04-25
MX2017003212A (es) 2017-07-20
EP3201394A1 (fr) 2017-08-09
AU2015327012A1 (en) 2017-04-13
DE102014114187B4 (de) 2018-06-21
US20170226699A1 (en) 2017-08-10
US10309062B2 (en) 2019-06-04
TR201907911T4 (tr) 2019-06-21
ES2727650T3 (es) 2019-10-17

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