EP1607337A2 - Pappschachtel, Zuschnitt und Verfahren zur Herstellung des Pappschachtels - Google Patents

Pappschachtel, Zuschnitt und Verfahren zur Herstellung des Pappschachtels Download PDF

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Publication number
EP1607337A2
EP1607337A2 EP05076367A EP05076367A EP1607337A2 EP 1607337 A2 EP1607337 A2 EP 1607337A2 EP 05076367 A EP05076367 A EP 05076367A EP 05076367 A EP05076367 A EP 05076367A EP 1607337 A2 EP1607337 A2 EP 1607337A2
Authority
EP
European Patent Office
Prior art keywords
box
film
blank
sealing
coating
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Withdrawn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
EP05076367A
Other languages
English (en)
French (fr)
Other versions
EP1607337A3 (de
Inventor
Peter Paul Van Eijndhoven
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.)
Solidus Solutions Holding BV
Original Assignee
Kappa GSF BV
Kappa Packaging BV
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 Kappa GSF BV, Kappa Packaging BV filed Critical Kappa GSF BV
Publication of EP1607337A2 publication Critical patent/EP1607337A2/de
Publication of EP1607337A3 publication Critical patent/EP1607337A3/de
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/42Details of containers or of foldable or erectable container blanks
    • B65D5/64Lids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D5/00Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper
    • B65D5/20Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form
    • B65D5/28Rigid or semi-rigid containers of polygonal cross-section, e.g. boxes, cartons or trays, formed by folding or erecting one or more blanks made of paper by folding-up portions connected to a central panel from all sides to form a container body, e.g. of tray-like form with extensions of sides permanently secured to adjacent sides, with sides permanently secured together by adhesive strips, or with sides held in place solely by rigidity of material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS 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
    • B65D77/00Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10Container closures formed after filling
    • B65D77/20Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container

Definitions

  • the invention relates to a method for realizing a package, more in particular a package for deep-frozen or moist products such as meats, fish vegetables or the like.
  • Such products are packaged in a cardboard box which, prior to filling, is lined with a moisture-proof film, which can then be wrapped around the products.
  • the box is closed off by a cardboard lid.
  • This manner of packaging offers the advantage that the cardboard boxes can be printed, and contribute to a high-quality effect of the product packaged therein.
  • a drawback is that the manner of packaging uses up relatively much material and is labour intensive and difficult to automate, in particular the application of the film.
  • a manner of packaging is known, used in particular for packaging fish, with which bags are formed from film webs which, after filling, are sealed tight and are placed into a plastic crate whereupon, optionally, the content can frozen.
  • An advantage of this manner of packaging is that the process can be automated well and that relatively little packaging material is used up, since the crates are re-usable.
  • a drawback is that as a rule, bags give a somewhat cheap impression, which may have an effect on the products packaged in these bags.
  • the bags are difficult to open and can easily become damaged during transport, so that products become lost and the surroundings may become dirty. Further, the crates are to be cleaned before they are reused, which is labour intensive and a burden to the environment.
  • the invention contemplates providing a method of the type described hereinabove, wherein the drawbacks of the known manners of packaging are at least partly avoided while the advantages thereof are maintained.
  • the invention contemplates providing a less labour intensive manner of packaging, which can easily be automated and with which relatively little packaging material is used up.
  • a method according to the invention is characterized by the features of claim 1.
  • a moisture-proof box can be obtained without the time-consuming and hard-to-automate operations of lining, tightening and pressing-on a film in the set-up box.
  • a coating can be applied to the blank before or after is has been punched out, in a simple manner with relatively uncomplicated machines.
  • the coating layer can, furthermore, be applied such that, after use, it can be separated from the blank in a simple manner, for separate waste disposal.
  • packaging material can be economized on. This is favorable for the environment (less waste material) and, furthermore, is advantageous as to packaging weight, volume and associated costs.
  • the closing film can moreover be designed to be transparent, so that the content remains visible to inspection, without, to that end, the package having to be opened.
  • the film can be printed on, at least partly. With the film, furthermore, a good closure can be effected. To that end, the film can be attached to a coated part of the box by heat welding or ultrasonic welding, with the film locally fusing with the coating.
  • the film can be prevented from coming loose inadvertently or be opened without anyone noticing.
  • the film can simply be torn loose, for instance by a tear lip provided to that end.
  • the film can, for instance, be cut open or torn open along weakening lines provided thereto.
  • a method according to the invention is characterized by the features of claim 2.
  • a tray-shaped box By setting up the box from a continuous blank, i.e. without incisions or notches between adjacent bottom and/or wall forming parts, a tray-shaped box can be obtained without splits or cracks.
  • a leak-proof box By, furthermore, providing this continuous blank with a moisture repelling coating, at least on a side turned inwards in set-up condition, a leak-proof box can be obtained, suitable to receive "moist" products such as deep-frozen goods or goods still to be frozen, in particular meat, fish or vegetables.
  • this leak-proof box can be closed off by sealing the closing film to the box, with a continuous, substantially moisture-tight sealing seam closed in itself, according to the features of claim 3.
  • a substantially moisture-tight package can be obtained which is suitable for transport and storage of the above-mentioned goods, and can easily be opened after use.
  • a method according to the invention is characterized by the features of claim 4.
  • this sealing method is not limited to use on flat, very solid sealing bases, such as an anvil which is usually deployed to that end, but the sealing method can be advantageously used on a much less solid and less flat base, such as a wall of the box itself, without this wall requiring special reinforcements or external support. Consequently, a very great freedom as to the placement of the sealing seams is obtained.
  • the film is sealed such that its edges to not project relative to the contour of the box, as defined by its ribs.
  • Such projecting film edges are inevitably formed with known sealing methods as the sealing seams are effected outside the contour of the box, on an anvil, and can cause a lot of nuisance because during transport and storage, these edges can become trapped between stacked boxes.
  • these problems can be effectively avoided by sealing the film against the box walls, for instance against the outside of the upstanding walls or on upper edges folded inwards.
  • blank parts corresponding to these sealing locations can, prior to setting up, be provided with a suitable thermoplastic coating.
  • the box is free of sharp edges or sudden transitions, at least at the location where the film is sealed, according to the features of claim 8.
  • the quality of the sealing seams provided thereon can be even better, in terms of sealing capacity and moisture tightness.
  • the invention further relates to a box according to the features of claim 10 and a blank according to claim 17, for use in a method according to the invention.
  • a leak proof box By setting up the box from a continuous cardboard blank, which is free of incisions and is provided on desired locations with a plastic, at least water repelling coating, in a very simple manner, a leak proof box can be obtained, suitable for packaging moist products, such as deep-frozen goods, which can, furthermore, be closed off well with a length of plastic film that can be sealed to the box.
  • the plastic coating on the inside of the box can for instance be formed by a layer of non-corona treated polyethylene. As a rule, such coating material is supplied with a Corona treatment, in order to render the coating printable.
  • a non-Corona design according to the invention in an advantageous manner, products that are frozen in the boxes, are prevented from freezing to the coating material.
  • the invention further relates to a device according to the features of claim 18, for sealing the film onto a relatively weak, not entirely flat sealing base, such as the cardboard wall of a box.
  • a relatively weak, not entirely flat sealing base such as the cardboard wall of a box.
  • Fig. 1 shows, in perspective view, a package 1 according to the invention, comprising a tray-shaped box 2 and a film 3 which, by way of closure, can be attached against the box 2.
  • the tray-shaped box 2 comprises a substantially rectangular bottom 10, bound by four upstanding walls 11- 14, which are mutually connected by glue flaps 15, 115 and jointly bound an open filling side 7.
  • the edges 16 of the upstanding walls 11- 14 remote from the bottom 10 can be folded inwards over approximately 90°, so that they extend approximately parallel to the bottom 10, as shown on the right hand side in Fig. 1.
  • the edges 16 can partly overlap, be shortened or mitred so that they abut against each other in a virtually flat manner.
  • These edges can be glued, with glue flaps provided on both sides, against an inside or outside of the adjacent, "edgeless" sidewalls.
  • the film 3 can substantially correspond to that of the bottom 10, as shown on the right hand side in Fig. 1.
  • the film 3 can be sealed onto the folded-in upper edges 16 of the box 2, which edges 16 can be provided to that end with a thermoplastic coating 8, indicated in hatching in Fig. 1.
  • the film 3 can be provided with edges 6 as shown on the left hand side in Fig. 1. With this, the film 3 can be sealed against the upstanding sidewalls 11- 14, on a coating layer 8 especially provided thereto, as indicated in hatching.
  • the film 3 can have other forms and dimensions.
  • Figs. 2 and 3 show two blanks 5, 105, respectively, from which a box 2 according to Fig. 1 can be set up, while on the left hand side, each time, a blank half is shown for a box 2 without upper edges 16 (corresponding to the left hand box half of Fig. 1) and, on the right hand side, a blank half for a box 2 with upper edges 16.
  • Both blanks 5, 105 are manufactured from cardboard, for instance solid cardboard or corrugated cardboard, while, on a side turned inwards in set-up condition, at least the bottom 10, the side walls 11- 14 and the glue flaps 15, 115 are provided with a moisture-proof plastic coating 8.
  • a plastic which is highly suitable to that end from a price-performance point of view is, for instance, Polyethylene (PE).
  • Other suitable coating materials are for instance Polypropylene (PP), aluminum (which can be glued as a film on the cardboard blank), wax or two-component coatings.
  • thermoplastic plastic for the purpose of sealing the film 3 thereon.
  • Suitable thermoplastic plastics are, for instance, Polyethylene (PE), once more due to the favorable price-performance ratio, Polypropylene (PP) or SIRLIN coatings.
  • the blanks 5, 105 can also be coated completely two-sidedly.
  • the coating 8 can be applied to the cardboard as, for instance, pre-formed film, or be sprayed on in melted form or powder form, or be applied to the cardboard with a doctor blade. This can moreover be done before of after the blank 5, 105 is punched out.
  • the thickness of the coating 8 is as thin as possible. This is favorable to the cost price and for recycling, at least with two-sidedly coated blanks. These are ground in a pulverizer. A thin coating layer will then break up more rapidly so that released paper fibers can dissolve in water. One-sidedly coated blanks are re-processed differently. In that case, a slightly thicker coating layer can be advantageous because this can be separated in a simpler manner.
  • the minimal possible coating thickness depends, inter alia, on the coating material used, the manner of application used and the surface roughness of the base (the cardboard or, optionally, a paper intermediate layer). When this roughness is great, and consequently, the cardboard or paper fibers project far, no sufficiently continuous layer can be obtained. When using a reasonable paper quality, the thickness of the Polyethylene coating can be around, for instance, 15 ⁇ m.
  • the two blanks 5, 105 differ mainly as to glue flaps 15, 115 with which the box walls 11- 14 are mutually connected in set-up condition.
  • blank 5 (Fig. 2) via a first folding line 18, these glue flaps 15 are pivotally connected to one adjacent sidewall 12, 14, and via an incision 17, separated from the other adjacent sidewall 11, 13.
  • blank 105 (Fig. 3) the glue flaps 115 are connected to both adjacent sidewalls, via respective first and second folding lines 18, 19.
  • the glue flaps 115 further comprise a third folding line 20, which extends from a corner point adjacent the bottom 10 to a corner point of the glue flap 115 located diagonally opposite thereto.
  • the film 3 can be sealed to the inside of the box walls 11, 14 with the aid of known sealing devices, while the outsides of these walls are to be supported temporarily to absorb the great forces that are applied when sealing.
  • the film 3 can also be sealed against an outside of the box 2 without additional support means, for instance to the edges 16 as shown in Fig. 4, with the aid of a special sealing device 25 according to the invention.
  • FIG. 4 schematically shows a possible embodiment of such a sealing device 25, comprising an elongated, flexible heating element 26, for instance an electric wire or heat conductive strip, flexibly suspended so that bending or deformation of the element 26 in the direction of the sealing base (box edge 16) is possible but lateral displacement (substantially parallel to the box edge 16) is not possible.
  • this is realized by suspending the heating element 26 between two layers of film 27, 28.
  • other embodiments are possible too.
  • the device 25 further comprises press-on means 30, for pressing the heating element 26 against the sealing base.
  • press-on means 30 too are of flexible design, such that they can follow possible irregularities in the sealing base and deformations of the heating element 26 as a result thereof.
  • the press-on means can for instance be manufactured from rubber, with a relatively low Shore hardness, or be formed from a flexible tube filled with a pressure medium, for instance air or liquid.
  • the film layers 27, 28 are provided, at their sides remote from the heating element 26, with a non-stick layer, for instance of Teflon, so that, in use, they do not stick to the film 3 to be sealed, or the press-on means 30, respectively.
  • a non-stick layer for instance of Teflon
  • the heating element 26 itself can be covered in such a non-stick layer.
  • the material and the thickness of the film layer 27 proximal to the sealing base is preferably selected such that it disturbs the heat transfer of the heating element 26 as little as possible while, conversely, the material and the thickness of the other film layer 28 is selected such that heat transfer to the press-on means 30 is limited to a minimum.
  • sealing device 25 With the above-described sealing device 25, relatively good sealing seams can be effected, i.e. with a high sealing capacity on a relatively unstable, irregular sealing bases such as a box wall.
  • This can be understood as follows. Due to the flexibility of the heating element 26, this element can abut well against the sealing base and any irregularities therein without great forces being required thereto. Due to the flexible press-on means 30, furthermore, a uniformly distributed press-on force can be applied to this heating element 26, which press-on force needs not be high and is free of pressure peaks that occur in customary sealing devices at the location of irregularities in the sealing base.
  • sealing seams can be realized on a box wall as shown, with press-on forces between approximately 0.02 and 0.5 N/mm 2 , with the press-on force used depending on, inter alia, the thickness and type of material of the film layers to be sealed together.
  • the thus realized sealing seams are of good quality, with a high degree of moisture-tightness, at least a high moisture barrier. Overall, it holds here that the quality, in particular the sealing action of the sealing seam will be better as the sealing base on which the sealing seams have been realized has fewer irregularities.
  • the tray-shaped box may have a triangular, square or multi-angular bottom surface, surrounded by a corresponding number of upstanding walls.
  • the box may further be divided into several compartments by means of horizontal or vertical partitions.
  • parts of the box can be designed to be transparent, so that the content is visible.
  • the blank can for instance be provided with openings covered with transparent film.
  • the boxes can be designed as ready-for-use carton, which are glued together in a factory and are then, in flat condition, taken to a location of use where they can be set up without further gluing operations.
  • the blank can be coated with two different types of plastic, while the one coating can have good moisture-proof properties and the other coating can have good sealing properties.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cartons (AREA)
  • Making Paper Articles (AREA)
  • Closing Of Containers (AREA)
EP05076367A 2004-06-10 2005-06-10 Pappschachtel, Zuschnitt und Verfahren zur Herstellung des Pappschachtels Withdrawn EP1607337A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1026382A NL1026382C2 (nl) 2004-06-10 2004-06-10 Werkwijze, doos, plano en sealinrichting voor het realiseren van een verpakking.
NL1026382 2004-06-10

Publications (2)

Publication Number Publication Date
EP1607337A2 true EP1607337A2 (de) 2005-12-21
EP1607337A3 EP1607337A3 (de) 2006-01-04

Family

ID=34974086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05076367A Withdrawn EP1607337A3 (de) 2004-06-10 2005-06-10 Pappschachtel, Zuschnitt und Verfahren zur Herstellung des Pappschachtels

Country Status (3)

Country Link
EP (1) EP1607337A3 (de)
NL (1) NL1026382C2 (de)
NO (1) NO20052819L (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011083342A3 (en) * 2010-01-08 2011-11-17 Linpac Packaging Limited Sealable container, sealed container and processes for making a sealable container and a sealed container

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2940654A (en) * 1958-09-18 1960-06-14 Pillsbury Co Container
US3387427A (en) * 1963-05-10 1968-06-11 Grace W R & Co Method of forming a carton enclosed package from a preformed foldable blank
FR2481677A1 (fr) * 1980-05-01 1981-11-06 Metal Box Co Ltd Recipients et procede pour emballer des aliments
EP0373907A1 (de) * 1988-12-14 1990-06-20 Du Pont Canada Inc. Heisssiegelvorrichtung für Plastikfolien
EP0899379A2 (de) * 1997-08-25 1999-03-03 Westvaco Corporation Heissversiegelter ofenfester Lebensmittelkarton und Deckel
EP1170220A1 (de) * 2000-07-06 2002-01-09 Suzuki Manufacturing, Ltd. Faltbare Verpackungsschale

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2940654A (en) * 1958-09-18 1960-06-14 Pillsbury Co Container
US3387427A (en) * 1963-05-10 1968-06-11 Grace W R & Co Method of forming a carton enclosed package from a preformed foldable blank
FR2481677A1 (fr) * 1980-05-01 1981-11-06 Metal Box Co Ltd Recipients et procede pour emballer des aliments
EP0373907A1 (de) * 1988-12-14 1990-06-20 Du Pont Canada Inc. Heisssiegelvorrichtung für Plastikfolien
EP0899379A2 (de) * 1997-08-25 1999-03-03 Westvaco Corporation Heissversiegelter ofenfester Lebensmittelkarton und Deckel
EP1170220A1 (de) * 2000-07-06 2002-01-09 Suzuki Manufacturing, Ltd. Faltbare Verpackungsschale

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011083342A3 (en) * 2010-01-08 2011-11-17 Linpac Packaging Limited Sealable container, sealed container and processes for making a sealable container and a sealed container
EP2845819A1 (de) * 2010-01-08 2015-03-11 Linpac Packaging Limited Verschließbarer Behälter und Verfahren zur Herstellung eines verschließbaren Behälters und eines geschlossenen Behälters
EP3184453A1 (de) * 2010-01-08 2017-06-28 LINPAC Packaging Limited Versiegelbarer behälter, versiegelter behälter und verfahren zur deren herstellung
EP3184453B1 (de) 2010-01-08 2022-03-09 LINPAC Packaging Limited Versiegelbarer behälter, versiegelter behälter und verfahren zur deren herstellung

Also Published As

Publication number Publication date
EP1607337A3 (de) 2006-01-04
NO20052819L (no) 2005-12-12
NL1026382C2 (nl) 2005-12-14
NO20052819D0 (no) 2005-06-10

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