EP1410999B1 - Wiederverschliessbare flexible Verpackung - Google Patents

Wiederverschliessbare flexible Verpackung Download PDF

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Publication number
EP1410999B1
EP1410999B1 EP02292587A EP02292587A EP1410999B1 EP 1410999 B1 EP1410999 B1 EP 1410999B1 EP 02292587 A EP02292587 A EP 02292587A EP 02292587 A EP02292587 A EP 02292587A EP 1410999 B1 EP1410999 B1 EP 1410999B1
Authority
EP
European Patent Office
Prior art keywords
packaging
strip
adhesive
sheet
closing strip
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.)
Expired - Lifetime
Application number
EP02292587A
Other languages
English (en)
French (fr)
Other versions
EP1410999A1 (de
Inventor
José Manuel Sampaio Carnacho
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.)
Amcor Flexibles France SAS
Original Assignee
Amcor Flexibles France SAS
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
Priority to EP02292587A priority Critical patent/EP1410999B1/de
Application filed by Amcor Flexibles France SAS filed Critical Amcor Flexibles France SAS
Priority to DE60235760T priority patent/DE60235760D1/de
Priority to PT02292587T priority patent/PT1410999E/pt
Priority to AT02292587T priority patent/ATE461870T1/de
Priority to ES02292587T priority patent/ES2342768T3/es
Priority to DK02292587.9T priority patent/DK1410999T3/da
Priority to PCT/EP2003/014859 priority patent/WO2004035389A2/fr
Priority to US10/531,663 priority patent/US7708463B2/en
Priority to AU2003293997A priority patent/AU2003293997B2/en
Publication of EP1410999A1 publication Critical patent/EP1410999A1/de
Priority to US12/323,168 priority patent/US8579781B2/en
Application granted granted Critical
Publication of EP1410999B1 publication Critical patent/EP1410999B1/de
Priority to CY20101100400T priority patent/CY1109988T1/el
Priority to AU2010219410A priority patent/AU2010219410B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/1691—End- or aperture-closing arrangements or devices using adhesive applied to attached closure elements
    • 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
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/812—Applying patches, strips or strings on sheets or webs
    • B31B70/8123—Applying strips

Definitions

  • the present invention relates to a flexible package, of the type comprising a body having externally at least one main face formed at least partially by a flexible sheet.
  • Many food products such as powdery products such as coffee and flour, or granulated products such as pasta and rice are packaged in flexible packages of the aforementioned type.
  • These packages are formed from one or more welded sheets. They generally have at least one lower transverse weld formed at the base of the body, an upper transverse weld initially formed at the upper end of the body and a longitudinal weld. In order to take the products contained in the package, the upper weld is totally or partially broken or the upper end of the package is totally or partially detached.
  • the open package is a pocket whose access is possible from the upper end which forms a neck defining an access passage inside the pocket.
  • Retaining means of the wound portion of the neck to allow a reliable resealing of the package are relatively expensive to implement because they require to bring on the packaging of the external elements.
  • the document FR-A-2,823,722 describes a flexible package in which the reclosing strip is cut partially in the flexible sheet forming the package.
  • the object of the invention is to propose a flexible packaging that can be closed easily and whose manufacturing cost is reduced.
  • the subject of the invention is a flexible package as defined in claim 1.
  • the invention also relates to a method according to claim 7.
  • the flexible package 10 shown on the figure 1 is intended for example for the packaging of coffee powder, or any other powder or granular product, food or otherwise.
  • the package comprises a flexible sheet 12 folded on itself longitudinally and secured in a longitudinal weld 14.
  • the package is initially closed at its lower end by a transverse weld 16 and at its upper end by a transverse weld 18.
  • the flexible package 10 forms a pocket 20 to be open at its upper end.
  • the pocket 20 comprises a body 22 constituting the vertical trunk of the pocket, this trunk being intended to contain the packaged products.
  • the body 22 is extended towards the upper end of the body by a neck 24 generally free of product.
  • the pocket 20 has two opposite main faces 26 extending parallel to each other and two side faces 28 connecting the main faces 26 and extending parallel to each other.
  • the longitudinal weld 14 defines, on one of the main faces of the pocket, two adjacent faces 26A, 26B. These two sections are connected to one another according to the height of the package by the longitudinal weld 14.
  • the body is closed by a bottom 30 obtained by folding the sheet.
  • the lower transverse weld 16 is applied against the bottom 30.
  • the lateral faces 28 have, at their upper end along the length of the neck 24, an internal fold forming a bellows enabling the two main faces 26 to be brought together in the region of the upper transverse weld 18.
  • the longitudinal weld 14 is of flesh-flesh type, that is to say that it is made by fitting against each other opposite portions of surfaces of the sheet delimiting the inside of the package.
  • the packaging incorporates means for retaining a wound portion of the neck of the package after initial opening to allow a reliable reclosing thereof.
  • These retaining means of a wound portion of the neck comprise a reclosing strip 43 held against the outer surface of the sheet 12 by a pressure-reactive adhesive 44 also called repositionable adhesive.
  • the strip 43 is retained along the section 26A. Alternatively, it is retained against the pan 26B. More generally, the strip is retained against a main face 26.
  • the strip 43 extends along the entire height of the package from the upper weld 18 to the lower weld 16. It extends parallel to the longitudinal weld 14.
  • the strip 43 extends above the welded beads 18 and 16.
  • a coating avoiding welding is interposed between the strip and the sheet 12 in the region welds 16, 18. This coating is especially useful at the upper weld 18 where the strip must be subsequently peeled off.
  • the strip 43 is made of the same material as that constituting the sheet 12.
  • the sheet 43 has the same structural characteristics as the sheet 12, that is to say that its thickness is identical to that of the sheet 12 of the same as its composition. Indeed, and as will be detailed below, the band 43 and the sheet 12 are from the same initial band.
  • the adhesive 44 extends only in the median portion of the strip 43, considering the width thereof. Thus, the lateral margins of the strip 43 are devoid of adhesive.
  • the adhesive 44 and the facing surfaces of the panel 26A and the strip 43 are adapted so that the adhesion of the adhesive 44 to the strip 43 is greater than the adhesion of the adhesive 44 to the panel 26A.
  • a repellent coating is advantageously applied to the outer face of the sheet 12 in the region of the strip 43 to reduce the adhesion between the adhesive and the sheet.
  • a repellent coating is advantageously disposed on the main face 16 not having the longitudinal weld and forming the face on which is subsequently bonded the strip 43 after reclosing. This coating is disposed at the location where the strip 43 is glued.
  • the repositionable adhesive is constituted by: double-sided adhesive tape cold application, continuous; a hot application hot melt, which can be interrupted; or a cold adhesive coating, which can be interrupted.
  • the packages are manufactured continuously from an initial strip 50 packaged in a roll 52.
  • the band 50 has a width greater than the width of the sheet 12 necessary for the realization of the package.
  • the band 50 circulates in a unit 54 allowing the application of an adhesive on a marginal portion 56 of the initial band.
  • the station 54 comprises a roll 58 for deflecting the band, for applying and for fixing a double-sided adhesive tape 62 on the marginal part 56.
  • This double-sided adhesive tape 62 comes from a reel 64 placed on a reel. continued.
  • Double-sided tape is a repositionable adhesive.
  • the unwinder and the ribbon are replaced by a hot melt hot melt head 60 of the marginal portion 56 with a repositionable adhesive.
  • the roll strip already comprises a repositionable adhesive range.
  • This range consists of a water-based adhesive that is printed beforehand when printing the film.
  • a cutting station 66 Downstream from the station 54 is arranged a cutting station 66 capable of continuously separating the marginal portion 56 previously provided with the adhesive from the remainder of the initial web to form, on the one hand, a packaging tape denoted 68 and, on the other hand, a reclosure band denoted 70 in this figure.
  • the cutting station 66 comprises, for example, two rotary cutting discs 72 engaged through the initial web and rotated by a drive motor 74.
  • a station 76 Downstream from the cutting station 66 is a station 76 for shifting the reclosing band 70 and bringing it into contact with the surface of the packaging strip 68.
  • This station 76 comprises, for example, a fixed roll 78 coated with a sliding material such as "Teflon" whose axis extends generally parallel to the plane of the packaging strip 68.
  • the axis of the roll is offset angularly relative to the direction of advancement of the packaging strip 68. It is arranged tangentially to the plane of the packaging strip 68.
  • the reclosing band 70 is engaged around the roll 78, its adhesive-free side being in contact with the roll.
  • the installation of the figure 3 allows, from the initial band, to obtain, at the output of the gluing station 60, an initial band whose marginal portion 56 is provided with an adhesive.
  • This marginal region is cut by the station 66 and separated from the packaging tape 68.
  • the reclosing tape 70 is then offset by the roller 78 and applied against the surface of the packaging tape 68 with its glued portion applied against the surface 68.
  • the reclosing strip 70 is disposed away from the edge noted 80 of the packaging tape 68.
  • the band 43 is derived from the same initial band as the sheet 12, the cut edges facing the strip 43 and the sheet 12 have complementary profiles.
  • the packaging strip 68 to which is secured the reclosing strip is then placed around a tubular shaper having a generally circular section.
  • the sheet thus wound around the tubular shaper sees its two longitudinal edges close to each other, and applied to one another along the face of the sheet facing the shaper.
  • the longitudinal weld 14 is then performed by clamping the longitudinal edges between two heated jaws or between an anvil and a jaw.
  • the manufacture of the packaging is completed as known per se by simultaneous realization of the upper and lower transverse welds of two consecutive packages and the separation of these two packages.
  • the packaging is used as illustrated Figures 4 to 6 .
  • the package is shown partially while a corner of the upper end of the neck 24 has been cut to ensure the partial rupture of the upper transverse weld 18 and thus to allow access to the inside of the pocket .
  • the first stage of the reclosing of the package is to move the upper portion of the strip 43 of the pan 26A on the side of the opening.
  • the user grasps the upper end of the strip 43 and pulls it down the package.
  • the adhesive 44 Due to the difference in adhesion of the adhesive 44 to the surface of the strip 43 and to the panel 26A, the adhesive is entrained with the strip 43, covering the middle portion of the exposed surface thereof.
  • the detached portion of the band, at least over most of the length of the neck 24 is a tab 90 still secured to the lower body of the package.
  • the base 92 of the strip, constituting the portion still bound to the body of the package, is located substantially in the extreme filling region of the package.
  • the neck 24 is folded on itself several times to form a winding 94.
  • This winding is formed along the main face 26 of the package having the weld 14.
  • the glued tab 90 is kept away from the winding 94.
  • the glued tab 90 is folded transversely over and around the winding 94, the free end of the tab 90 being bonded to the main face 26 of the package opposite the main face carrying the weld 14.
  • winding 94 is kept wound by the action of the tab 90 bonded, on the one hand, around the winding and secured at each of its ends, the main faces of the package.
  • FIG 7 there is shown a package formed from a single sheet whose longitudinal weld 14 is of the flesh-to-leather type, that is to say that it is made by fitting the opposite surfaces of the sheet delimiting the packaging.
  • the reclosing band denoted 103 consists of two superimposed strips 43 connected to one another.
  • One of the strips 43 is secured by an adhesive to the outer surface of the sheet 12.
  • the other strip 43 is bonded to the first by an additional adhesive interposed between the two strips.
  • the two strips 43 are connected to one another by welding in the region of the upper 18 and lower welds 16. These welds are performed simultaneously to the welds 18 and 16.
  • the installation for the manufacture of the packaging sheet has the same elements as those for the installation of the figure 3 .
  • a gluing station 100 for the second strip is disposed downstream of the second cutting station 66 '. This station is adapted to apply an adhesive ensuring the subsequent connection of the two strips 43.
  • a second shift station 76 ' is arranged to bring the second band noted 70' above the first band noted 70.
  • This second station comprises two rollers 78 ', 78 "defining an angle of 45 ° with the direction of advancement
  • the first roller 78 ' provides a 90 ° directional change of the web relative to the advancing direction of the main web, the second roller 78 "again providing 90 ° angular offset of the web. so that it comes to apply on the first band 70 already applied against the packaging tape 68.
  • the two strips 70, 70 ' are bonded when they come into contact.
  • Such an embodiment is particularly useful when the thickness of the packaging sheet is reduced. Indeed, the doubling of the thickness of the reclosing strip ensures a greater resistance thereof.
  • the package can be closed reliably, the winding formed from the collar can not itself unfold.
  • the reclosing of the packaging is guaranteed by means having a very low cost, this means can be manufactured simultaneously with the bag packaging products.
  • the establishment of the retention means of the winding is relatively easy for the user.
  • the packaging is here formed continuously. However, alternatively, the packages are prefabricated and left open at one end. They are only closed and sealed at this end after filling.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Wrappers (AREA)
  • Bag Frames (AREA)
  • Buffer Packaging (AREA)
  • Materials For Medical Uses (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Making Paper Articles (AREA)

Claims (8)

  1. Flexible Verpackung (10) mit einem Körper (22), der außen mindestens eine Hauptseite (26) aufweist, die zumindest teilweise von einer flexiblen Folie (12) gebildet ist, wobei die Verpackung einen Streifen zum Wiederverschließen (43) aufweist, der vor dem Öffnen der Verpackung von der flexiblen Folie (12) getrennt wird, sowie ein durch Druck reaktivierbares Klebemittel (44) aufweist, das zwischen der Außenfläche der flexiblen Folie (12) und dem Streifen zum Wiederverschließen (43) angeordnet ist, wobei die Haftkraft des Klebemittels (44) an der Oberfläche des Streifens zum Wiederverschließen (43) größer als die Haftkraft des Klebemittels (44) an der Außenfläche der Verpackungsfolie (12) ist, wobei der Streifen zum Wiederverschließen (43) und die Verpackungsfolie (12) identische strukturelle Merkmale aufweisen und von einer gleichen Ursprungsbahn stammen, und wobei die Verpackung an einem Ende mindestens eine quer verlaufende Schweißnaht (16, 18) aufweist,
    dadurch gekennzeichnet,
    daß die Verpackungsfolie (12) auf ihrer Außenfläche zumindest in einem Bereich, in dem der Streifen zum Wiederverschließen (43) die quer verlaufende Schweißnaht (16, 18) überlappt, von einer zwischen der Verpackungsfolie (12) und dem Klebemittel (44) liegenden Schicht, die das Schweißen verhindert, bedeckt ist, wobei diese Schicht, die das Schweißen verhindert, dazu ausgelegt ist, ein Verschweißen des Streifens zum Wiederverschließen (43) mit der Oberfläche der Verpackungsfolie (12) zu verhindern.
  2. Verpackung nach Anspruch 1,
    dadurch gekennzeichnet,
    daß die flexible Folie auf sich selbst zurückgefaltet ist und die beiden gegenüberligenden Ränder des umgefalteten Streifens durch eine in Längsrichtung verlaufende Schweißnaht (14) verbunden sind, wobei die gefaltete Folie anfänglich an ihren beiden Enden (16, 18) geschlossen ist,
    und daß sich der Streifen zum Wiederverschließen (43) parallel zu der in Längsrichtung verlaufenden Schweißnaht (14) erstreckt.
  3. Verpackung nach einem der vorherigen Ansprüche,
    dadurch gekennzeichnet,
    daß das durch Druck reaktivierbare Klebemittel ein Klebemittel ist, das aus der Gruppe ausgewählt ist, die aus einem Schmelzklebstoff, einem Kaltkleber und einem doppelseitigen Klebeband ausgewählt ist.
  4. Verpackung nach einem der vorherigen Ansprüche,
    dadurch gekennzeichnet,
    daß die Verpackungsfolie (12) auf ihrer Außenfläche zumindest in dem Bereich der Aufbringung des Klebemittels (44) von einer zwischen der Verpackungsfolie und dem Klebemittel (44) angeordneten Abstoßungsschicht bedeckt ist, wobei die Abstoßungsschicht dazu ausgelegt ist, ein Anhaften des Klebemittels (44) an der Oberfläche der Verpackungsfolie (12) zu begrenzen.
  5. Verpackung nach einem der vorherigen Ansprüche,
    dadurch gekennzeichnet,
    daß das Klebemittel (44) sich ausschließlich in dem mittleren Bereich des Streifens zum Wiederverschließen (43) erstreckt, wobei die Ränder des Streifens zum Wiederverschließen (43) kein Klebemittel aufweisen.
  6. Verpackung nach einem der vorherigen Ansprüche,
    dadurch gekennzeichnet,
    daß der Streifen zum Wiederverschließen (103) mindestens zwei übereinander liegende Streifen (43) aufweist, die zumindest lokal miteinander verbunden sind, wobei die beiden Streifen strukturelle Merkmale besitzen, die mit denjenigen der Verpackungsfolie (12) identisch sind.
  7. Verpackungsverfahren für die Herstellung einer Verpackung gemäß einem der vorherigen Ansprüche,
    dadurch gekennzeichnet,
    daß es die folgenden Schritte aufweist:
    - Abschneiden eines Randbereichs einer Ursprungsbahn zum Ausbilden eines Streifens zum Wiederverschließen (70) und eines Verpackungsstreifens (68);
    - Anlegen des Streifens zum Wiederverschließen (70) gegen eine Oberfläche des Verpackungsstreifens (68) mit dazwischen liegender Anordnung eines durch Druck reaktivierbaren Klebemittels, wobei eine Schicht, die das Schweißen verhindert, zumindest in einem Bereich, in dem der Streifen zum Wiederverschließen (70) die quer verlaufende Schweißnaht (16, 18) überlappt, zwischen dem Verpackungsstreifen (68) und dem Klebemittel (44) des Streifens zum Wiederverschließen (70) liegend angeordnet ist; und
    - Ausbilden der Verpackung durch Formen eines Teilstücks des Verpackungsstreifens (68), an dem der Streifen zum Wiederverschließen(70) gehalten ist.
  8. Verfahren nach Anspruch 7,
    dadurch gekennzeichnet,
    daß es vor dem Schritt des Schneidens einen Schritt des Aufbringens des Klebemittels in einem zum Ausbilden des Streifens zum Wiederverschließen (70) bestimmten Randbereich der Ursprungsbahn (50) aufweist.
EP02292587A 2002-10-18 2002-10-18 Wiederverschliessbare flexible Verpackung Expired - Lifetime EP1410999B1 (de)

Priority Applications (12)

Application Number Priority Date Filing Date Title
DE60235760T DE60235760D1 (de) 2002-10-18 2002-10-18 Wiederverschliessbare flexible Verpackung
PT02292587T PT1410999E (pt) 2002-10-18 2002-10-18 Embalagem flexível de fecho reutilizável
AT02292587T ATE461870T1 (de) 2002-10-18 2002-10-18 Wiederverschliessbare flexible verpackung
ES02292587T ES2342768T3 (es) 2002-10-18 2002-10-18 Embalaje flexible recerrable.
DK02292587.9T DK1410999T3 (da) 2002-10-18 2002-10-18 Genlukkelig, fleksibel pakning
EP02292587A EP1410999B1 (de) 2002-10-18 2002-10-18 Wiederverschliessbare flexible Verpackung
PCT/EP2003/014859 WO2004035389A2 (fr) 2002-10-18 2003-10-17 Emballage souple refermable
US10/531,663 US7708463B2 (en) 2002-10-18 2003-10-17 Recloseable flexible bag
AU2003293997A AU2003293997B2 (en) 2002-10-18 2003-10-17 Recloseable flexible bag
US12/323,168 US8579781B2 (en) 2002-10-18 2008-11-25 Recloseable flexible bag
CY20101100400T CY1109988T1 (el) 2002-10-18 2010-05-07 Επανακλειομενη ελαστικη συσκευασια
AU2010219410A AU2010219410B2 (en) 2002-10-18 2010-09-13 Method for producing flexible packaging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02292587A EP1410999B1 (de) 2002-10-18 2002-10-18 Wiederverschliessbare flexible Verpackung

Publications (2)

Publication Number Publication Date
EP1410999A1 EP1410999A1 (de) 2004-04-21
EP1410999B1 true EP1410999B1 (de) 2010-03-24

Family

ID=32039238

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02292587A Expired - Lifetime EP1410999B1 (de) 2002-10-18 2002-10-18 Wiederverschliessbare flexible Verpackung

Country Status (10)

Country Link
US (2) US7708463B2 (de)
EP (1) EP1410999B1 (de)
AT (1) ATE461870T1 (de)
AU (2) AU2003293997B2 (de)
CY (1) CY1109988T1 (de)
DE (1) DE60235760D1 (de)
DK (1) DK1410999T3 (de)
ES (1) ES2342768T3 (de)
PT (1) PT1410999E (de)
WO (1) WO2004035389A2 (de)

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US5407419A (en) * 1992-06-01 1995-04-18 Kellcover, Inc. Enclosure with integral tie member
US5928749A (en) * 1995-11-22 1999-07-27 Forman; Harold M Resealable package, and apparatus for and method of making same
US5716135A (en) * 1996-01-26 1998-02-10 Campbell; Wilson S. Shopping bag having restraining tabs and an associated method
FR2823722B1 (fr) * 2001-04-18 2003-07-25 Danisco Flexible France Emballage souple refermable

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ATE461870T1 (de) 2010-04-15
DK1410999T3 (da) 2010-06-14
AU2003293997B2 (en) 2010-07-01
US7708463B2 (en) 2010-05-04
PT1410999E (pt) 2010-04-14
ES2342768T3 (es) 2010-07-14
AU2010219410B2 (en) 2013-01-17
WO2004035389A3 (fr) 2004-06-03
WO2004035389A2 (fr) 2004-04-29
US20090145084A1 (en) 2009-06-11
US8579781B2 (en) 2013-11-12
US20060083446A1 (en) 2006-04-20
CY1109988T1 (el) 2014-09-10
AU2003293997A1 (en) 2004-05-04
AU2010219410A1 (en) 2010-10-07
DE60235760D1 (de) 2010-05-06
EP1410999A1 (de) 2004-04-21

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