EP2188182B1 - Behälter, verfahren und vorrichtung zur verpackung von produkten - Google Patents

Behälter, verfahren und vorrichtung zur verpackung von produkten Download PDF

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Publication number
EP2188182B1
EP2188182B1 EP08806866A EP08806866A EP2188182B1 EP 2188182 B1 EP2188182 B1 EP 2188182B1 EP 08806866 A EP08806866 A EP 08806866A EP 08806866 A EP08806866 A EP 08806866A EP 2188182 B1 EP2188182 B1 EP 2188182B1
Authority
EP
European Patent Office
Prior art keywords
sheet material
cavity
container
forming
station
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.)
Not-in-force
Application number
EP08806866A
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English (en)
French (fr)
Other versions
EP2188182A2 (de
Inventor
Andrea Bartoli
Alberto Bartoli
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.)
Sarong SpA
Original Assignee
Sarong SpA
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 Sarong SpA filed Critical Sarong SpA
Priority to EP13151733.6A priority Critical patent/EP2592004B1/de
Publication of EP2188182A2 publication Critical patent/EP2188182A2/de
Application granted granted Critical
Publication of EP2188182B1 publication Critical patent/EP2188182B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B9/00—Enclosing successive articles, or quantities of material, e.g. liquids or semiliquids, in flat, folded, or tubular webs of flexible sheet material; Subdividing filled flexible tubes to form packages
    • B65B9/02—Enclosing successive articles, or quantities of material between opposed webs
    • B65B9/04—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material
    • B65B9/042—Enclosing successive articles, or quantities of material between opposed webs one or both webs being formed with pockets for the reception of the articles, or of the quantities of material for fluent material
    • 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
    • B65D79/00—Kinds or details of packages, not otherwise provided for
    • B65D79/005—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting
    • B65D79/008—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a rigid or semi-rigid container, e.g. in bottles or jars
    • B65D79/0081—Packages having deformable parts for indicating or neutralizing internal pressure-variations by other means than venting the deformable part being located in a rigid or semi-rigid container, e.g. in bottles or jars in the bottom part thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/24—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for shaping or reshaping completed packages

Definitions

  • the present invention relates to containers, methods and apparatuses for packaging products, in particular, refers to an apparatus and a method for thermoforming, hot-filling with a product and hermetically closing containers obtained from sheet material by a hot-deformation process.
  • Thermoformed containers for products are known, for example for food products, comprising a shell or cavity in which a product is batched and a sheet or film which is coupled along an upper peripheral edge of the shell, by welding, to close the container hermetically.
  • the materials In packaging of food products that are not in liquid, fluid or semisolid form, for example drinks, juices and the like, in order to ensure the hygiene and asepticity of the process, it is necessary to proceed, in the case of cold-filling of the containers with the product, to a preventive sterilisation of both the material to be thermoformed and/or of the thermoformed container and of the closing film, before the aforesaid filling.
  • the materials have to be suitable for sterilisation treatment, which is generally performed by using hydrogen peroxide in liquid form as a sterilising agent.
  • Packaging processes are known in which a high degree of hygiene and asepticity is ensured by hot-filling of the containers with the product to be packaged.
  • the product to be packaged is preventively sterilised at a high temperature, typically 70-80°C, and is maintained at this temperature even during filling of the containers, which are subsequently closed hermetically.
  • the high temperature of the product in fact enables the container to be purified, air to be extracted from the container (which is in a vacuum when cooling has occurred) and gives stability to the product, inactivating enzymes and microorganisms.
  • thermoforming sheet material made of plastics it is necessary to use a material having appropriate thermal resistance and a sufficiently great thickness to prevent the container, during the cooling step, from becoming deformed or even imploding due to the vacuum that is created in the interior of the container.
  • Such materials are, however, very costly.
  • thermoforming process for thermoforming these sheet materials is more complex and costly.
  • US 2736656 discloses a method for manufacturing and filling packages for individual servings of foods.
  • a strip of thermoplastic material is subjected to the action of heat, pressure and suitable forming dies to form a succession of cups having side walls, bottom walls and a border of undeformed strip material.
  • the cups are filled with a product and a cover of elastic plastic material is sealed to the border strip surrounding the individual cups.
  • the cup packages so formed are severed form the strip ready for the use.
  • the cover and the bottom wall of the cup are deformable so as to allow a contraction of the air inside the cup (i.e. when the hot filled product cools) or to allows the expansion of the air inside the cup (i.e. when exterior air pressure decreases).
  • WO 93/24391 discloses a container comprising a side wall, a base and means for sealing the container.
  • the base includes a standing ring on which the container is adapted to stand and a diaphragm portion which extends from the inner edge of the standing ring thus forming a central portion of the base of the container.
  • the diaphragm portion is adapted to axially deform by bowing either inwardly or outwardly preferentially to the side wall so to accommodate changes in pressure in the container wherein the portion of the diaphragm adjacent to and extending from the inner edge of the standing ring is substantially continuous.
  • An object of the present invention is to improve known apparatuses and methods for making containers by forming sheet material.
  • Another object is to provide an apparatus and a method for forming, hot-filling and closing containers obtained from any sheet material for alimentary use and which is suitable for being thermoformed.
  • Further object is to improve known containers, in particular increasing the mechanical resistance of the containers and lowering the manufacturing costs of the containers.
  • Still another object is to make containers that are suitable for hot-filling and that ensure a high degree of protection to the contained product.
  • the sheet material 100 unwound from a reel 101 is moved, for example in an indexed manner, by advance means 19 along an advance direction F through a plurality of operating stations indicated below:
  • the forming means 3 may comprise mechanical forming means, such as drawing tools or punches and/or pneumatic forming means, such as compressed-air dispensing nozzles.
  • the forming means 3 makes on the sheet material 100 a plurality of cavities 51 arranged in one or more rows that are substantially orthogonal to the advance direction F.
  • the forming means 3 is configured so as to make a cavity 51, for example shaped as a glass, provided with wall means comprising a bottom wall 52, a side wall 53 and a connecting wall 54.
  • the bottom wall 52 has a shape that is substantially externally convex in a direction opposite to that of the sheet material 100, in an initial outward curved configuration E.
  • the bottom wall 52 forms, for example, a cap surface, with a double curve.
  • the bottom wall 52 is connected to the side wall 53 of said cavity 51 by the connecting wall 54 of a substantially annular shape.
  • the side wall 53 forms, for example, a cylindrical or conical surface.
  • the connecting wall 54 comprises a first portion 54a, connected to the side wall 53 and a second portion 54b that forms a resting surface lying on a plane A that is substantially parallel to the sheet material 100 and is connected to a peripheral portion 52a of the bottom wall 52.
  • the bottom wall 52 is shaped so as to form a deformable portion of said wall means.
  • the bottom wall 52 and the connecting wall 54 have lesser thickness than that of the side wall 53 to enable said bottom wall 52 to be elastically deformed and pass from the initial outward curved configuration E to a final inward curved configuration G, as explained in detail below in the description.
  • the reduced thickness of the bottom wall 52 and of the connecting wall 54 is obtained by stretching material by punches of the forming means 3.
  • the cavities 51 are filled with hot-batched product 80 up to a preset level ( Figure 4 ).
  • Inserting means 9 is provided in the closing station 5 for spreading said further sheet material 200 and superimposing the further sheet material 200 on the sheet 100, so as to close the aforesaid cavities 51.
  • the further sheet material 200 is, for example, a film of coupled aluminium or plastics unwound from a further reel 201.
  • the closing station 5 further comprises welding means 10 that performs a welding, for example a "peelable” welding, between the sheet material 100 and the further sheet material 200. More precisely, the welding means 10 performs welding on an edge portion 55 of each cavity 51, said edge portion 55 having a substantially annular shape and a substantially constant width. welding allows to close hermetically the cavity 51 that in this manner encloses a defined quantity of batched product 80 and an initial volume 81 of air at the same temperature as the product ( Figure 5B ).
  • a welding for example a "peelable” welding
  • the cutting means 12 performs a shaped blanking and separates the thermoformed, filled and closed containers 50 from the sheet material 100 and from the further sheet material 200.
  • the blanking scraps 103 are discharged outside the apparatus.
  • the cutting means 12 is of known type and is not illustrated in detail, can be of hot-shaped dinking die, punch-die, or longitudinal and transverse blades cutting type.
  • the cutting means 12 can be configured so as to obtain from the sheet material 100 a plurality of separate and distinct containers 50.
  • Each container 50 that is thus obtained has an edge portion 55 on which a respective cover 56 is welded that is obtained by blanking from said further sheet material 200.
  • the edge portion 55 forms a protruding annular edge by means of which the container 50 can be grasped and supported during movement.
  • the cutting means 12 is arranged to separate from the sheet 100 a row of containers 50 that are joined together by connecting strips at the edge portions 55.
  • the separated containers 50 that are thus obtained are moved through an overturning station 13 in which they are overturned so as to rest on the respective edge portions 55 and have the bottom walls 52 facing upwards.
  • the containers 50 are maintained in this upturned position to enable the product 80 and the air contained in the containers 50 to be cooled. Following this cooling, the air in the cavity 51 reduces in volume causing the container 50 to deform, in the specific case causing the deformation of the bottom wall 52, which folds inwards in a controlled manner, passing from the initial outward curved configuration E to the final inward curved configuration G.
  • This localised and partial deformation of the container 50 is made possible both by the cap-shape of the bottom wall 52 and of the suitably shaped connecting wall 54, and by the reduced thickness of the aforesaid walls that have an elasticity and flexibility that are greater than that of the side wall 53.
  • any thermoformable sheet material that is suitable for alimentary use and resistant to the temperature of the batched product, nevertheless using thicknesses that would cause the known containers to be deformed or broken.
  • each container 50 contains, in addition to the defined quantity of batched product 80, a residual volume 81' of air at ambient temperature.
  • the second portion 54b of the connecting wall 54 acts as a stable resting surface for the container 50.
  • FIG 11 there is illustrated an embodiment of the container 50' that differs from the previously described container through the fact that the bottom wall 52', by excluding the peripheral portion 52a', has a thickness that is substantially the same as that of the side wall 53' and has a substantially cap shape.
  • the thickness of the peripheral portion 52a' and of the connecting wall 54' is on the other hand thinner.
  • the flexibility of the bottom wall 52' is such as to ensure the deformation of the bottom wall 52' from the initial configuration E to the final configuration G.
  • the peripheral portion 52a' and the connecting wall 54' with the respective portions 54a' 54b' act as an elastic hinge for facilitating the deformation of the bottom wall 52'.
  • the bottom wall is substantially flat whilst the side wall has a substantially annular portion that is externally convex, i.e. outwardly curved, having a reduced thickness. This portion is connected to the side wall so as to be able to be deformed in a controlled manner to a concave configuration, during cooling of the hot product batched in the container for compensating the reduction in volume of the air contained in the container.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)

Claims (5)

  1. Verfahren, aufweisend Vorrücken eines thermoformbaren Plattenmaterials (100) entlang einer Vorschubrichtung (F), Verformen des Plattenmaterials (100), um zumindest eine Kavität (51) eines Behälters (50) zu erzeugen, der mit einem Wandungsmittel (52, 53, 54) versehen ist, Befüllen der Kavität (51) mit einem Produkt (80), Verschließen der Kavität (51) mit einem weiteren Plattenmaterial (200), Verformen eines gewünschten Teils (52) des Wandungsmittels (52, 53, 54) nach dem Bereitstellen des Verschließens, um ein Innenvolumen der Kavität (51) zu variieren, wobei das Verformen ein Falten des gewünschten Teils (52) des Wandungsmittels (52, 53, 54) aus einer Anfangskonfiguration (E), bei der der Teil (52) von der Kavität (51) nach außen gekrümmt ist, zu einer Schlusskonfiguration (G) umfasst, bei der der Teil (52) zur Kavität (51) nach innen gekrümmt ist, wobei das Verschließen ein Überlagern des Plattenmaterials (100) mit dem weiteren Plattenmaterial (200) und das Verbinden der Plattenmaterialien (100, 200) bei einem Randteil (55) der Kavität (51) umfasst, wobei die Methode nach dem Verbinden ein Stanzen der zumindest einen Kavität (51) des Behälters (50) aufweist, das die Kavität (51) vom Plattenmaterial (100) und vom weiteren Plattenmaterial (200) trennt, wobei das Stanzen ein Schneiden des Plattenmaterials (100) und des weiteren Plattenmaterials (200) entlang des Randteils (55) des zumindest einen Behälters (50) aufweist, wobei das Verfahren dadurch gekennzeichnet ist, dass es nach dem Stanzen ein Rotieren des zumindest einen Behälters (50) aufweist, um den gewünschten Teil (52) des Wandungsmittels (52, 53, 54) frei anzuordnen, um von der Anfangskonfiguration (E) zur Schlusskonfiguration (G) verformt zu werden.
  2. Verfahren nach Anspruch 1, wobei das Verformen des Plattenmaterials (100) ein Bilden des gewünschten Teils (52) umfasst, der eine geringere Dicke als die Dicke eines verbleibenden Teils (53, 54) des Wandungsmittels (52, 53, 54) aufweist, wobei das Bilden des gewünschten Teils (52) insbesondere ein Bilden zumindest einer unteren Wandung (52) des Wandungsmittels (52, 53, 54) umfasst.
  3. Vorrichtung, aufweisend ein Mittel zum Vorrücken eines thermoformbaren Plattenmaterials (100) entlang einer Vorschubrichtung (F) durch eine Formstation (2) für die Platte (100), bei der ein Formmittel (3) vorgesehen ist, das dazu ausgestaltet ist, Teile des Plattenmaterials (100) zu verformen, um zumindest eine Kavität (51) eines Behälters (50) zu erzeugen, eine Befüllstation (4), bei der die zumindest eine Kavität (51) mit einem Produkt (80) befüllt wird, eine Verschlussstation (5), um dem Plattenmaterial (100) ein weiteres Plattenmaterial (200) zu überlagern und an diesem festzulegen, um den zumindest einen Hohlraum (51) zu verschließen, wobei das Formmittel (3) dazu ausgestaltet ist, an einem Wandungsmittel (52, 53, 54) der zumindest einen Kavität (51) einen gewünschten Teil (52) zu erzeugen, der verformbar ist, um ein Innenvolumen der verschlossenen Kavität (51) zu varüeren, wobei die Vorrichtung eine Stanzstation (11) aufweist, die stromabwärts der Verschlussstation (5) angeordnet ist, und bei der die Behälter (50) von den Plattenmaterialien (100, 200) getrennt werden, wobei die Vorrichtung dadurch gekennzeichnet ist, dass eine Kippstation (13) vorgesehen ist, die stromabwärts der Stanzstation (11) angeordnet ist, bei der jeder Behälter (50) rotiert wird, um den verformbaren Teil (52) des Wandungsmittels (52, 53, 54) frei anzuordnen, um verformt zu werden.
  4. Vorrichtung nach Anspruch 3, wobei das Formmittel (3) dazu ausgestaltet ist, den verformbaren Teil (52) zu bilden, der eine geringere Dicke als eine Dicke eines verbleibenden Teils (53, 54) des Wandungsmittels (52, 53, 54) aufweist, und/oder wobei das Formmittel (3) dazu ausgestaltet ist, den verformbaren Teil zu bilden, der zumindest eine untere Wandung (52) des Wandungsmittels (52, 53, 54) aufweist, und/oder wobei das Formmittel (3) dazu ausgestaltet ist, eine Mehrzahl von Kavitäten (51) entsprechender Behälter (50) zu verformen, und/oder wobei die Verschlussstation (5) ein Einfügemittel (9) zur Verteilung des weiteren Plattenmaterials (200) und zur Überlagerung des Plattenmaterials (100) mit dem weiteren Plattenmaterial (200), und ein Verbindungsmittel (10) aufweist, das stromabwärts des Einfügemittels (9) angeordnet ist und dazu ausgestaltet ist, das Plattenmaterial (100) und das weitere Plattenmaterial (200) entlang von Randteilen (55) der Kavitäten (51) miteinander zu verbinden.
  5. Vorrichtung nach Anspruch 3, wobei die Stanzstation (11) ein Schneidmittel (12) aufweist, das dazu ausgestaltet ist, das Plattenmaterial (100) und das weitere Plattenmaterial (200) entlang von Randteilen (55) jedes Behälters (50) zu trennen.
EP08806866A 2007-08-03 2008-07-31 Behälter, verfahren und vorrichtung zur verpackung von produkten Not-in-force EP2188182B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13151733.6A EP2592004B1 (de) 2007-08-03 2008-07-31 Behälter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000259A ITMO20070259A1 (it) 2007-08-03 2007-08-03 Contenitore, metodo ed apparato per confezionare prodotti
PCT/IB2008/001989 WO2009019557A2 (en) 2007-08-03 2008-07-31 Container, method and apparatus for packaging products

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP13151733.6A Division EP2592004B1 (de) 2007-08-03 2008-07-31 Behälter
EP13151733.6 Division-Into 2013-01-17

Publications (2)

Publication Number Publication Date
EP2188182A2 EP2188182A2 (de) 2010-05-26
EP2188182B1 true EP2188182B1 (de) 2013-03-13

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
EP08806866A Not-in-force EP2188182B1 (de) 2007-08-03 2008-07-31 Behälter, verfahren und vorrichtung zur verpackung von produkten
EP13151733.6A Not-in-force EP2592004B1 (de) 2007-08-03 2008-07-31 Behälter

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP13151733.6A Not-in-force EP2592004B1 (de) 2007-08-03 2008-07-31 Behälter

Country Status (4)

Country Link
EP (2) EP2188182B1 (de)
ES (2) ES2527675T3 (de)
IT (1) ITMO20070259A1 (de)
WO (1) WO2009019557A2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX362372B (es) * 2012-02-28 2019-01-14 Procter & Gamble Metodo para formar envases.
ITMO20120244A1 (it) * 2012-10-08 2014-04-09 Sarong Spa Apparato per formare ed etichettare un oggetto

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736656A (en) * 1952-02-11 1956-02-28 Kraft Foods Co Method of packaging
US3426939A (en) * 1966-12-07 1969-02-11 William E Young Preferentially deformable containers
DE7606990U1 (de) * 1976-03-08 1976-08-05 Pfeiffer Ohler Eisen Theob Behaelter fuer heiss einzufuellendes fluessiges oder pasteuses Fuellgut
JPH07506795A (ja) * 1992-06-02 1995-07-27 エーシーアイ　オペレイションズ　プロプライエタリー　リミテッド 容器
FR2825681B1 (fr) * 2001-06-08 2004-08-27 Erca Formseal Procede et installation de fabrication et de remplissage de recipients ayant un opercule muni d'une languette de prehension

Also Published As

Publication number Publication date
WO2009019557A2 (en) 2009-02-12
ES2410560T3 (es) 2013-07-02
EP2592004B1 (de) 2014-10-29
ITMO20070259A1 (it) 2009-02-04
WO2009019557A3 (en) 2009-04-30
EP2188182A2 (de) 2010-05-26
ES2527675T3 (es) 2015-01-28
EP2592004A1 (de) 2013-05-15

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