EP1437311A1 - Emballage en forme de boíte en un matériau flexible scellable - Google Patents

Emballage en forme de boíte en un matériau flexible scellable Download PDF

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Publication number
EP1437311A1
EP1437311A1 EP20030388001 EP03388001A EP1437311A1 EP 1437311 A1 EP1437311 A1 EP 1437311A1 EP 20030388001 EP20030388001 EP 20030388001 EP 03388001 A EP03388001 A EP 03388001A EP 1437311 A1 EP1437311 A1 EP 1437311A1
Authority
EP
European Patent Office
Prior art keywords
front wall
seams
peelable
wall
seam
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Withdrawn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
EP20030388001
Other languages
German (de)
English (en)
Inventor
Erik Olsen
Eddy Daelmans
Marc Loibl
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 ApS
Original Assignee
Amcor Flexibles Europe AS
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 Amcor Flexibles Europe AS filed Critical Amcor Flexibles Europe AS
Priority to EP20030388001 priority Critical patent/EP1437311A1/fr
Priority to US10/754,831 priority patent/US20040141664A1/en
Publication of EP1437311A1 publication Critical patent/EP1437311A1/fr
Withdrawn legal-status Critical Current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
    • B65D75/00—Packages comprising articles or materials partially or wholly enclosed in strips, sheets, blanks, tubes, or webs of flexible sheet material, e.g. in folded wrappers
    • B65D75/52—Details
    • B65D75/58—Opening or contents-removing devices added or incorporated during package manufacture
    • B65D75/5855—Peelable seals

Definitions

  • the invention relates to a box-shaped package of a flexible and sealable, especially heat-sealable, packaging material including:
  • packaging material denotes both plastic film-based and paper-based materials and combinations thereof.
  • film is used in a wide sense to include a monofilm, a co-extruded film, and a laminate including one or more monofilms and or co-extruded films and optionally one or more paper layers.
  • Packages of this type are inter alia known from WO 00/58166 and WO 00/58174. Such packages are preferably made of a web material on vertical form, fill and seal machines. Consequently, the expression “transverse” denotes a direction parallel to the longitudinal direction of the web material, said latter direction also being denoted as the machine direction. Correspondingly the expression “transverse” denotes a direction perpendicular to the machine direction. It should be noted that the packages may be made of a single web of packaging material or of several, eg two or four, packaging material webs. It should also be noted that the packages may be made as pre-fabricated bags, which are subsequently filled and sealed in a fill and seal machine.
  • the object of the present invention is to provide a package of the above type, which is easily openable and may be provided with an advantageously sized opening allowing for easy access to and removal of the packed product.
  • a special object of the invention is to provide a package for articles of foods, in particular light foods, such as mixed salads, the package being provided with a good sized opening allowing for use of the package as a bowl at consumption of the article of food contained therein.
  • the package according to the invention is characterised in at least one of the side seams is peelable, that at least portions of the front and the back walls extend beyond the transverse peelable side seam to form a front wall gripping member and a back wall gripping member, and that opening means are provided for opening at least a portion of the front wall in longitudinal direction when the peelable sealing seam is peeled.
  • the peelable side seam is peeled by gripping the gripping members or flaps of the front wall and the back wall and pulling these apart.
  • opening means at least a portion of the front wall is opened to provide access to the interior of the package.
  • the contents of the package may be removed through this opening, eg while the package rests on the back wall. It is thus possible to use the package as a bowl at consumption of the article of food contained therein.
  • the present package differs from the above prior art packages in that the peelable side seam is a transverse seam when seen relative to the machine direction (MD in Figure 1), whereas the peelable seams of the above prior art packages are longitudinal seams. This difference is considered advantageous in relation to the manufacture of the package and in relation to the properties of the package.
  • a first and a second end side seam adjacent the peelable side seam are peelable at least between the front wall and the first and second end walls to optimise the provided opening.
  • the front wall is peelable along its entire transverse extent in the portion at the front wall gripping member.
  • the opening means advantageously includes peelable end seams between the front wall and the first and second end walls to allow for a complete removal of the front wall from the package, at least up to the side seam opposite the peelable side seam and the peelable end side seams. An opening is thus provided completely exposing the contents of the package to allow easy removal thereof.
  • the opening means may include two mutually interspaced incisions or weakening lines in the side edge of the front wall at the peelable side seam or at the peelable end side seams.
  • the gripping members When the gripping members are gripped and pulled apart, the front wall is peeled in the peelable side seam(s) and further torn longitudinally in line with the incisions or weakening lines, whereby an opening is provided in the front wall.
  • the incisions or weakening lines may optionally extend into the peelable side seam(s).
  • the packaging material includes a plastic film oriented in the longitudinal direction, ie in the machine direction, said oriented film providing a controlled tearing of the packaging material in line with the incisions or weakening lines, when the gripping members are gripped and pulled apart.
  • controlled and tearable films are oriented PE (polyethylene), PP (polypropylene), PA (polyamide) and PET (polyester) films.
  • the incisions or weakening lines may be provided at either of the end seams between the front wall and the first and the second end walls, respectively, to obtain as large an opening area as possible.
  • the weakening lines may be formed by means of the sealing bars forming the longitudinal end seams between the front wall and the first and second end walls, the inner edges of the sealing bars weakening the packaging material at the inner edges of the longitudinal end seams.
  • the sealing bars provide a notch effect such that the packaging material is torn along the inner edges of the end seams, when the package is opened.
  • the opening means include two mutually interspaced weakening lines in the front wall extending from a side edge thereof and beyond the peelable side seam or the peelable end side seams.
  • the weakening lines may advantageously be provided by means of so-called laser cuts, ie by means of a laser beam.
  • the laser used may be a so-called contour laser, ie a laser capable of forming contoured, ie not straight, cuts.
  • the weakening lines may be formed by means of mechanical devices.
  • the weakening lines may further be continuous or discontinuous.
  • the weakening lines may extend over the majority of the front wall and preferably at least over two-thirds of the distance to the side seam opposite the peelable side seam.
  • the weakening lines may be provided at either of the end seams between the front wall and the first and the second end walls and extend substantially parallel to the respective end seam to obtain as large an opening as possible.
  • the weakening lines may be arranged symmetrically about a longitudinal centre line of the front wall and extend mutually diverging from the front wall gripping member towards the end seams and then parallel thereto.
  • the weakening lines may further extend so as to allow a joining thereof, eg they may initially extend parallel to each other and then mutually divergent. As a result the portion of the front wall defined by the weakening lines may be removed completely at opening of the package.
  • the gripping members may have an extent less than that of the package and be arranged centrally.
  • the front wall and the back wall over their entire transverse width may extend beyond the peelable side seams, whereby the gripping members or flaps may have a transverse width corresponding to the transverse width of the package.
  • the front wall member may be defined by two mutually interspaced incisions or weakening lines in the projecting portion of the front wall.
  • peelable denotes a seal or a seam, which may be peeled and which preferably has a strength between 100 and 800 g/20mm, most preferably between 200 and 500 g/20 mm.
  • Peelable sealing seams may for instance be provided by using a sealing medium sealing peelably to itself.
  • the sealing medium may either be a film, eg a so-called peel PE or peel PP (cast PP), or a coating which may be applied either to the entire inner surface or only to the sealing areas.
  • Another option is to apply a coating, eg a so-called peel lacquer, to a sealing medium fushion-sealing to itself, said coating weakening the sealing strength so as to provide a peel seal.
  • Such weakening coatings may be applied by printing either to the entire inner surface or only to the sealing areas.
  • a third option for providing a peelable seal is to use a laminate or a co-extruded film including a thin inner sealing medium layer, and a superjacent layer, the peel strength between the said layers being lower than the sealing strength obtained when the sealing medium is heat-sealed to itself.
  • a peeling of the seal causes a tearing of the thin inner sealing layer along the edges of the sealing seam and a delamination between the two layers of the laminate or co-extrudate in the area of the sealing seam.
  • the above peelable seal is also known as a so-called riss peel.
  • a pressure-sensitive layer eg a hot-melt
  • the peel strength between the inner layer and the pressure-sensitive layer being lower than the sealing strength obtained when the inner sealing medium layer is sealed to itself.
  • the inner cohesion of the pressure-sensitive layer is less than the peel strength between the pressure-sensitive layer and the inner sealing medium layer and the sealing strength obtained when the sealing medium layer is sealed to itself.
  • a peeling of the seal causes a tearing of the thin inner sealing medium layer along the edges of the sealing seam and a delamination between the inner sealing medium layer and the pressure-sensitive layer or optionally an inner delamination or splitting of the pressure-sensitive layer.
  • the pressure-sensitive layer is exposed, when the seal is peeled and may be used for reclosure of the package after the initial opening thereof.
  • FIG. 1 and 2 The embodiment of a box-shaped package according to the invention shown in Figs. 1 and 2 includes a front wall 1 and a back wall 2 arranged opposite each other and opposing first and second end walls 3,4.
  • the front wall 1 and the back wall 2 are sealed together inner face to inner face along transverse side seams 5, 6 extending along opposing side edges.
  • the first end wall 3 is folded inwards at the end portions 7, 8 thereof and sealed to the front wall 1 and the back wall 2 along transverse first end seams 9, 10.
  • the first end wall 3 is sealed to itself outer face to outer face and to the front wall 1 and the back wall 2 inner face to inner face along first opposing end side seams 11, 12.
  • the inwardly folded end portions 7, 8 of the first end wall 3 are sandwiched between the front and back walls 1, 2 at the first end side seams 11, 12.
  • the first end side seams 11, 12 are aligned with the transverse side seams 5, 6 between the front wall 1 and the back wall 2.
  • the second end wall 4 is also folded inwards at the end portions 13, 14 thereof and sealed to the front wall 1 and the back wall 2 along second transverse end side seams 15, 16.
  • the second end wall 4 is sealed to itself outer face to outer face and to the front wall 1 and the back wall 2 inner face to inner face along second opposing end side seams 17, 18.
  • the inwardly folded end portions 13, 14 of the second end wall 3 are sandwiched between the front wall 1 and the back wall 2 at the second end side seams 17, 18.
  • the end side seams 17, 18 are aligned with the transverse side seams 5, 6 between the front wall 1 and the back wall 2.
  • the front wall 1 and the back wall 2 are extended in the longitudinal direction such that they extend beyond the side seam 5 to form a front wall gripping member 19 and a back wall gripping member 20.
  • the side seam 5 is a peelable seam.
  • the adjacent end side seams 11 and 17 between the front wall 1 and the first and second end walls 3, 4 are also peelable seams.
  • the longitudinal end seams 9, 15 between the front wall 1 and the end walls 3, 4 are peelable.
  • an opening to the interior of the package is thus provided to allow easy removal of the contents of the package through the formed opening.
  • the front wall 1 is peeled, the end side seams 11, 17 remain intact, ie. are left non-peeled, in the sealing areas between the back wall 2 and the inwardly folded end portions 7, 13 of the end walls 3, 4 and in the sealing areas between the outer faces of the inwardly folded portions 7, 13, confer Figure 2.
  • the gripping members 19A, 20A extend over the entire transverse width of the packaging, as shown in Figure 3.
  • An example of a suitable packaging material for the above embodiment is the laminate coex.
  • OPP/peel PE wherein peel PE is a polyethylene-based sealing medium layer sealing peelably to itself and coex.
  • OPP denotes a co-extruded oriented polypropylene film provided with a thin sealing medium layer on each side including a copolymer of PP and PE.
  • the peel PE film is the inner layer when seen in relation to the finished packaging.
  • the thickness of the coex. OPP film may for instance be 60 ⁇ m and the thickness of the peel PE film may for instance be 20 ⁇ m.
  • one or more barrier layers eg of polyvinylidene chloride (PVdC) or of ethylenevinyl alcohol (EVOH) or a metallization layer, may be provided between the peel PE film and the coex. OPP film.
  • PVdC polyvinylidene chloride
  • EVOH ethylenevinyl alcohol
  • the package may advantageous be manufactured and filled on a vertical form, fill and seal machine, preferably from a single web of packaging material.
  • the web material is fed into the machine's filling tube having a rectangular cross section and is formed into a hose of a rectangular cross section, three of the end seams being formed by folding and sealing the web material, while the fourth end seam is formed by sealing the edges of the web material.
  • the fourth end seam may for instance be the end seam 9 between the front wall 1 and the first end wall 3. Since the web material is continuous at the three folded and sealed end edges, the fold at the end seam 15 opposite the end seam 9 has to be cut away in the longitudinal direction to allow for peeling of the end seam 15 between the front wall 1 and the second end wall 4, when the finished package is to be opened.
  • the removal of the said fold may advantageously be performed on the filling tube immediately after completion of the end seam 15.
  • transverse side seams 5, 11, 17 are provided in a manner known per se below the filling tube after the formation of the inwardly folded portions 7, 13.
  • the hose is then advanced by a distance corresponding to the longitudinal extent of the finished package and filled with the product to be packed.
  • the inwardly folded end portions 8, 14 of the end walls 3, 4 and then the transverse side seams 6, 12, 18 are formed. While the latter sealing seams are being formed, the gripping members 19, 20 are also formed, and the formed, filled and sealed package is separated from the hose.
  • the second embodiment of the invention shown in Figures 4 and 5 corresponds widely to the first embodiment shown in Figs. 1 and 2 and thus includes a front wall 1 and a back wall 2 being sealed together by means of transverse side seams 5, 6, and first and second end walls 3, 4, each having inwardly folded end portions 7, 8; 13, 14.
  • the first end wall 3 is sealed to the front and back walls 1, 2 along first longitudinal end seams 9, 10 and along first end side seams 11, 12.
  • the second end wall 4 is sealed to the front and back walls 3, 4 along second longitudinal end seams 15, 16 and along second end side seams 17, 18.
  • the package is also provided with gripping members 19, 20 formed by a longitudinal extension of the front and back walls past the side seam 5.
  • the second embodiment shown in Figures 4 and 5 is identical to the first embodiment shown in Figures 1 and 2.
  • the second embodiment differs from the first embodiment by the front wall 1 being provided with two mutually interspaced, longitudinal weakening lines 21, 22 weakening the packaging material to such an extent that it is torn along the weakening lines, when subjected to a predetermined tear force.
  • the weakening lines 21, 22 are provided adjacent a respective end seam 9, 15 between the front wall 1 and the first and second end walls 3, 4.
  • the weakening lines extend from the free end edge 23 of the front wall 1 over the majority of the front wall 1 in the longitudinal direction.
  • the gripping members 19, 20 are gripped and pulled away from each other, whereby the peelable side seam 5 is peeled. Furthermore the adjacent peelable end side seams 11, 17 between the front wall 1 and the first and second end walls 3, 4 are peeled up to the weakening lines 21, 22. Since the strength of the latter peelable sealing seams exceeds that of the tear strength of the weakening lines 21, 22, the front wall is torn along the weakening lines.
  • the end seams 9, 15 between the front wall 1 and the end walls 3, 4 thus remain intact and narrow longitudinal portions of the front wall remain connected to the end walls.
  • a packaging material having an inner sealing medium layer which fusion-seals, ie. it does not seal peelably to itself, may, however, also be used provided that a peelable side seam 5 is provided between the front and back walls 1, 2, and peelable end side seams 11, 17 are provided between the front wall 1 and the end walls 3, 4.
  • peelable seams may for instance be provided by applying a transverse peel lacquer strip to the sealing medium layer in the portion corresponding to the peelable side seams 5, 11 and 17.
  • the fold at the end seam 15 need not be cut away during the manufacture of the package from a single web of packaging material on a vertical form, fill and seal machine.
  • the weakening lines may extend mutually diverging from the front wall gripping member 19 towards the end seams 9, 15 and then extend mutually parallel thereto, as shown by means of dot-and-dash lines 25, 26 in Figure 4. Additionally, it should be noted that the weakening lines 25, 26 may be joined together by means of a transverse weakening line 27, as shown in Figure 4. As a result, the portion of the front wall 1 defined by the weakening lines 25, 26, 27 is removed completely when the package is opened.
  • weakening lines may be omitted in the embodiment shown in Figures 4 and 5.
  • the front wall may instead be provided with two mutually interspaced incisions or weakening lines in the free side edge 23 at the peelable side seams 5, 11, 17.
  • the incisions or weakening lines may optionally extend into the said side seams and may be provided in the same area of the free side edge as the weakening lines 21, 22 shown in Figure 4.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
EP20030388001 2003-01-10 2003-01-10 Emballage en forme de boíte en un matériau flexible scellable Withdrawn EP1437311A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20030388001 EP1437311A1 (fr) 2003-01-10 2003-01-10 Emballage en forme de boíte en un matériau flexible scellable
US10/754,831 US20040141664A1 (en) 2003-01-10 2004-01-09 Box-shaped package of a flexible and sealable packaging material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20030388001 EP1437311A1 (fr) 2003-01-10 2003-01-10 Emballage en forme de boíte en un matériau flexible scellable

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EP1437311A1 true EP1437311A1 (fr) 2004-07-14

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EP (1) EP1437311A1 (fr)

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WO2006089750A1 (fr) * 2005-02-25 2006-08-31 Huhtamaki Ronsberg, Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg Sachet tubulaire doté d'un couvercle
US7744517B2 (en) 2004-07-23 2010-06-29 Kraft Foods Global Brands Llc Tamper-indicating resealable closure
DE102009046507A1 (de) 2009-11-06 2011-05-12 Huhtamaki Ronsberg Zn Der Huhtamaki Deutschland Gmbh & Co. Kg Wiederverschließbare Verpackung mit Doppelklebstelle
US7963413B2 (en) 2006-05-23 2011-06-21 Kraft Foods Global Brands Llc Tamper evident resealable closure
US8114451B2 (en) 2006-12-27 2012-02-14 Kraft Foods Global Brands Llc Resealable closure with package integrity feature
US8308363B2 (en) 2006-05-23 2012-11-13 Kraft Foods Global Brands Llc Package integrity indicator for container closure
US8408792B2 (en) 2007-03-30 2013-04-02 Kraft Foods Global Brands Llc Package integrity indicating closure
US9150342B2 (en) 2003-04-16 2015-10-06 Intercontinental Great Brands Llc Resealable tray container
CN105026282A (zh) * 2012-10-26 2015-11-04 科利来包装有限公司 柔性包装和其制造方法
US9205967B2 (en) 2010-01-26 2015-12-08 Generale Biscuit Resealable packaging for food products and method of manufacturing
US9221590B2 (en) 2010-03-23 2015-12-29 Generale Biscuit Resealable packaging for food products and method of manufacturing
US9630761B2 (en) 2008-10-20 2017-04-25 Mondelez UK Holding & Services Limited Packaging
US9656783B2 (en) 2010-05-18 2017-05-23 Intercontinental Great Brands Llc Reclosable flexible packaging and methods for manufacturing same
WO2017100179A1 (fr) * 2015-12-09 2017-06-15 Intercontinental Great Brands Llc Emballage alimentaire ayant un élément d'ouverture refermable et procédé d'ouverture, de retrait d'un produit alimentaire et de refermeture d'un emballage alimentaire refermable
US9688442B2 (en) 2011-03-17 2017-06-27 Intercontinental Great Brands Llc Reclosable flexible film packaging products and methods of manufacture
US9708104B2 (en) 2010-05-18 2017-07-18 Intercontinental Great Brands Llc Reclosable flexible packaging and methods for manufacturing same
US10118741B2 (en) 2008-07-24 2018-11-06 Deborah Lyzenga Package integrity indicating closure
US10207850B2 (en) 2012-10-26 2019-02-19 Primapak, Llc. Flexible package and method of making same
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US10843837B2 (en) 2015-09-18 2020-11-24 Primapak, Llc Apparatus and method for making a flexible package

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US7967510B2 (en) 2006-08-08 2011-06-28 Kellogg Company Flexible container for pourable product
FR2915963B1 (fr) * 2007-05-10 2009-07-17 3G Sarl Sachet de conditionnement
US20090161995A1 (en) * 2007-12-21 2009-06-25 Eric Henderson Flexible film plate-mat bag
US20100142864A1 (en) * 2008-09-15 2010-06-10 Sara Lee Corporation Openable food packaging
US20100067832A1 (en) * 2008-09-15 2010-03-18 Sara Lee Corporation Openable food packaging
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EP3145819B1 (fr) 2014-05-19 2020-12-02 Primapak, LLC Appareil et procédé de fabrication d'emballage souple
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Cited By (42)

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Publication number Priority date Publication date Assignee Title
US9150342B2 (en) 2003-04-16 2015-10-06 Intercontinental Great Brands Llc Resealable tray container
US7744517B2 (en) 2004-07-23 2010-06-29 Kraft Foods Global Brands Llc Tamper-indicating resealable closure
US8622619B2 (en) 2004-12-10 2014-01-07 Amcor Flexibles Aps Packaging
AU2005313124B2 (en) * 2004-12-10 2011-03-31 Amcor Flexibles Europe A/S Packaging
CN101076482B (zh) * 2004-12-10 2012-01-04 埃姆苛柔性物欧洲联合股份有限公司 包装
WO2006061654A1 (fr) * 2004-12-10 2006-06-15 Amcor Flexibles Europe A/S Conditionnement
WO2006089750A1 (fr) * 2005-02-25 2006-08-31 Huhtamaki Ronsberg, Zweigniederlassung Der Huhtamaki Deutschland Gmbh & Co. Kg Sachet tubulaire doté d'un couvercle
US9663282B2 (en) 2006-05-23 2017-05-30 International Great Rapids LLC Package integrity indicator for container closure
US7963413B2 (en) 2006-05-23 2011-06-21 Kraft Foods Global Brands Llc Tamper evident resealable closure
US8308363B2 (en) 2006-05-23 2012-11-13 Kraft Foods Global Brands Llc Package integrity indicator for container closure
US8951591B2 (en) 2006-05-23 2015-02-10 Intercontinental Great Brands Llc Package integrity indicator for container closure
US8722122B2 (en) 2006-05-23 2014-05-13 Intercontinental Great Brands Llc Package integrity indicator for container closure
US8746483B2 (en) 2006-05-23 2014-06-10 Intercontinental Great Brands Llc Tamper evident resealable closure
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