EP0748745A1 - Vorrichtung zum Oeffnen eines Beutels aus Kunststoffolie - Google Patents

Vorrichtung zum Oeffnen eines Beutels aus Kunststoffolie Download PDF

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Publication number
EP0748745A1
EP0748745A1 EP96401301A EP96401301A EP0748745A1 EP 0748745 A1 EP0748745 A1 EP 0748745A1 EP 96401301 A EP96401301 A EP 96401301A EP 96401301 A EP96401301 A EP 96401301A EP 0748745 A1 EP0748745 A1 EP 0748745A1
Authority
EP
European Patent Office
Prior art keywords
film
parts
line
zone
separation means
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Withdrawn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
EP96401301A
Other languages
English (en)
French (fr)
Inventor
Jean Luc Brigand
Jean-Luc Sornay
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.)
Sealed Air SAS
Savencia SA
Original Assignee
Bongrain SA
Grace SA
Cryovac France SA
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 Bongrain SA, Grace SA, Cryovac France SA filed Critical Bongrain SA
Publication of EP0748745A1 publication Critical patent/EP0748745A1/de
Withdrawn legal-status Critical Current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
    • 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

Definitions

  • the invention relates to a device for easy opening of a packaging made of a flexible film having a line of lower resistance to tearing; a package consisting of contents and a packaging provided with such a device; an easy opening part intended for such a device; a method of making such a package; a method of producing a packaging film provided with an easy opening part; the tubular film thus produced.
  • WO-A-87/07580 discloses an assembly comprising a container for a product and a label. This set makes it possible to disperse the product.
  • the container has a flap opening by pivoting along a line forming a hinge.
  • the label is provided with a permanent adhesive completely covering the flap and beyond its hinge line.
  • the label is permanently associated with the flap and the container beyond the hinge line.
  • the label is also provided with a thin and light pattern of adhesive surrounding the flap, constituting means of association with the container intended to close the flap.
  • it is also provided, opposite the flap, that the label is completely covered with a permanent adhesive. And, adjacent to this area, there is a pull cord.
  • the problem underlying this document is therefore that of closing the container - in this case a cardboard box - after each use, thanks to a label ensuring at the same time, in one area, a permanent connection and , on another zone, a repetitive removable link.
  • the document EP-A-517 566 relates to a label for closing a package whose free edges of the envelope are brought together, folded or folded. According to an achievement envisaged, the label also allows successive openings and closings.
  • the flexible film has one or more weld lines.
  • weld lines For example, ultrasonic welding, thermal welding, or electrostatic welding.
  • the package may more particularly be of the type in which the film is placed stretched over the contents mechanically or it may be stretched over the contents by a heat shrinkage step. In this case, it is usually difficult to rip the film to access the content. Indeed, no catch exists on the film.
  • an easy opening device specially adapted for packaging in a flexible film having a line of lower resistance to tearing characterized in that it comprises a flexible and substantially inextensible piece such as a label, a film or a piece of film, attached to the external face of the film, placed astride the line of weakest resistance, comprising, with regard to this line, means of separation from the part in two parts, normally inactive when the packaging is closed and made active as a result of sufficient traction exerted by the user, means of reciprocal attachment of the film and the part, on either side of the line of lower resistance and at the location of the two parts of the part; and means for manual entry of at least one of the two parts capable of allowing, once implemented and the separation means made active, the separation of the two parts of the part and the opening of the packaging.
  • the part is in a single part and then comprises said separation means.
  • the part is in two parts, with a separation between them, and is devoid of the separation means.
  • the invention also relates to a package consisting of content and of a packaging provided with such an easy opening device.
  • an easy opening part intended for the aforementioned device characterized, according to a first embodiment, in that it is flexible, substantially inextensible and comprises means of separation into two parts, each part comprising two zones, namely a first zone adjoining the separation means, provided with means for securing with the film or capable of being secured with the film by such means and a second zone adjoining the first zone has free edges of the part, devoid of means for securing to the film or incapable of being secured to the film or secured to the film while being able to be easily detached from it.
  • the part in question in a second embodiment, is characterized in that it is devoid of separation means and is produced in two parts.
  • the invention relates to a method of producing a packaging film in which one starts from a film shaped into a tube and provided with a longitudinal weld or a longitudinal bonding and is applied to the face external of the film, a part for easy opening of the packaging, so as on the one hand to position the part separation means or the separation between the two parts of the part with regard to the weld line produced on the film, on the other hand, to secure the two parts of the part to the film in particular by reciprocal pressure, the part being affixed at the place, respectively on either side, of a zone of least resistance of the line of welding or gluing of the film.
  • the invention relates to a tubular film characterized in that it comprises a plurality of spaced easy opening parts.
  • the invention relates to a method of producing a package in which the contents are wrapped with the film, the latter being provided with an easy opening device.
  • the easy opening part is affixed to the film once the latter is affixed and closed on the content.
  • the invention therefore allows an easy opening of a flexible film packaging having a line of lower resistance (welding, bonding or other).
  • FIG. 1 illustrates a package 1 consisting of content 2 and of packaging 3.
  • the content 2 can be, for example, in the form of a block of cheese or cheese specialty. However, this application is in no way limiting.
  • the packaging essentially comprises a flexible plastic film.
  • the film can be non-oriented, mono-oriented or bi-oriented. It can be stretchable, heat shrinkable or heat-set (heat-set), transparent or opaque, possibly printed and, if necessary, food-grade.
  • plastics used as well as the processes for the production of these films can therefore be chosen in particular from those which are known in this field and optimized in order to obtain the desired properties mentioned above and appropriate depending on the destination.
  • external layers which must be able to be welded, glued or joined and joined to one another by electrostatic welding, there may be mentioned as possible material, without limitation, polyolefins, and polyamides.
  • the film is closed on itself by means of one or more welding lines 4 which may be of the ultrasonic welding type, or thermal welding or electrostatic welding.
  • the welding is carried out by ultrasound.
  • the film is closed by gluing.
  • the film 3 has a line of lower tear resistance.
  • a weld line 4 fulfills this condition.
  • a specific zone of a weld line 4 may be provided which has a lower resistance to tearing than the remaining part of the weld.
  • the easy opening device according to the invention also comprises an easy opening part 5.
  • the part 5 is in the form of a label, a film or a piece of film.
  • the part 5 is flexible but substantially inextensible during manual traction exerted by the user.
  • the part 5 is produced from or from paper, plastic, cardboard or a combination of such materials.
  • the part 5 is attached to the external face of the film 3, of the packaging, that is to say opposite of the content 2.
  • the part 5 is placed astride the line 4 of weakest resistance of the film 3.
  • this line of lower resistance is assimilated to a weld line 4 or more particularly to an area of a weld line 4 having a lower resistance.
  • the part 5 in the embodiment of Figure 1 is in one part and comprises means 6 for separation into two parts 7a, 7b. Consequently, the part 5 is made of a material of a nature or shape suitable for allowing this separation.
  • These separation means 6 are normally inactive when the package 3 is closed. They are made active as a result of sufficient traction exerted by the user on these means.
  • the separation means 6 are active and the two parts 7a, 7b are separate and separated from one another.
  • the easy opening device also includes means 8 for reciprocal attachment of the film 3 and of the part 5, on either side of the line of weakest resistance 4 and at the location of the two parts 7a, 7b. These means 8 are shown in particular in FIGS. 4 and 6.
  • joining means 8 are for example an adhesive or a weld.
  • the part 5 may include, when manufactured, an adhesive located in an area or having an appropriate configuration, as described below.
  • the easy opening device also comprises means 9 for manual entry by the user of at least one of the two parts 7a, 7b.
  • the gripping means 9 are such that they are capable of allowing, once implemented and the separation means 6 made active, the separation of the two parts 7a, 7b and therefore the opening of the packaging 3 to 1 location of line 4 of lower resistance.
  • the part 5 has a generally rectangular or pseudo-rectangular shape delimited by two free transverse edges 10 and two longitudinal free edges 11.
  • the part 5 has a general shape of a diamond, the narrowest points of which are truncated to form the transverse free edges 10.
  • the longitudinal free edges 11 therefore comprise, in this case, two sections forming an angle.
  • the part 5 has a longitudinal plane of symmetry.
  • the separation means 6 are in the form of a tongue 12.
  • This tongue 12 is removable but integrated into the part 5. It extends between its two opposite free edges 10.
  • the tongue 12 is interposed between and defines the two parts 7a, 7b. It is separated from them by two lines of lower resistance respectively 13a, 13b.
  • the part 7a is limited, towards the center of the part 5 by the line of weakest resistance 13; towards the outside of the part 5 via the corresponding longitudinal free edge 11; and, at its two ends, by the transverse free edges 10.
  • the lines of weaker resistance 13a, 13b can be continuous or discontinuous. They can be made by grooving, punching, drilling, or in any other suitable way. Preferably, these lines are rectilinear.
  • the tongue 12 has at least one of its two ends a gripping zone 14 projecting from the transverse free edge 10 of the part. This zone 14 can be swollen so as to ensure sufficient grip by the user since the tongue 12 can have - for its part - a small width.
  • the separation means 6 comprise one or more lines of lower resistance formed on the part 5 and extending between the two edges 10. This or these lines of lower resistance are fractured by action by the user either directly on this line, or indirectly via the securing means 8.
  • the separation means 6 are in the form of at least at least one wire, ribbon or equivalent, attached to the part 5 on its face 15 facing the film 3.
  • This face 15 is qualified as internal. It faces the content 2 and is normally invisible to the user when the package 3 is closed.
  • the part 5 has an external face 16, visible to the user.
  • the wire, ribbon or equivalent extends between the two transverse free edges 10 while being interposed between the two parts 7a, 7b.
  • This wire, ribbon or equivalent comprises a gripping zone emerging from the part 5 so as to allow the user to grip and then pull. By sufficient traction on this wire, ribbon or equivalent, it is then possible to tear the piece 5 right through.
  • the film 3 and the part 5, at the location of the line of weakest resistance 4 and the separation means 6, are not joined to one another by adhesive bonding, welding or the like or are not joined together one to the other than with a joining force clearly lower than the joining force of each part 7a, 7b to the film 3.
  • the part 5 in a single part previously described is produced in two parts 5a and 5b - preferably symmetrical and placed symmetrically with respect to the line of weakest resistance 4 - Fixed on the package 1, namely on the external face of the film 3. They are made physically not integral with one another. These parts 5a, 5b are preferably assembled at the same time on the package 1 but are separated from each other and placed on either side of the line of weakest resistance 4. These two parts 5a, 5b replace the part 5 in a single part previously described.
  • the function of this embodiment is identical to that described above with the difference that the separation means 6 comprising the tongue 12 and the grip zone 14 are eliminated.
  • the two parts 5a and 5b are flexible and substantially inextensible.
  • the two parts 5a and 5b normally inactive when the package 3 is closed, are made active as a result of sufficient traction exerted by the user.
  • Means 23a and 23b ensure the reciprocal attachment of the film 3 and of the two parts 5a, 5b of part on either side of the line of weakest resistance 4.
  • Manual gripping means 24a and 24b are able to allow, a once implemented, the separation of the two parts 5a, 5b and the opening of the packaging.
  • the separation means 6 comprise a tongue 12
  • this preferably has a width sufficient to adequately cover the weld of the weakest resistance line 4.
  • the input means 9 are, in general, an area 17 of a part 7a, 7b.
  • the characteristic of this zone 17 is that it is not attached to the film 3 or that it can be easily detached from the film 3.
  • a point of glue can be provided between the part 5 and the film 3, in the zone 17 intended to avoid inadvertent movement of the area 17 of the part 5 relative to the film 3.
  • Each of the two parts 7a, 7b of the part 5 therefore comprises at least a first zone 18 adjoining the separation means 6 and a second zone 17 adjoining the first zone 18 and forming the means 9.
  • the two zones 17, 18 are separated one from the other by a line 19.
  • This line 19 can either be materialized as such, or not materialized but formed by the border between zones 17 and 18.
  • the first zone 18 is joined to the film 3 by the joining means 8.
  • This first zone 18 is bounded towards the center of the part 5 by one of the lines of weakest resistance 13a, 13b; towards the outside of part 5 by a line such as 19; and, on both sides by the edges 10.
  • the second zone 17 is delimited towards the inside of the part 5 by a line such as 19. It is adjacent to a free edge 11 of the part. Where appropriate, it is delimited on either side by a transverse free edge 10.
  • the line 19 has at least one zone 20 close to the separation means 6 in particular of the corresponding line of weakest resistance 13a, 13b and at least one zone 21 distant from these separation means 6.
  • this embodiment is not exclusive of others.
  • the zone 20 is located in the middle part of the part 5 substantially at equal distance from the edges 10.
  • two remote zones 21 are provided, adjoining the two edges 10.
  • each of the two parts 7a, 7b comprises manual entry means such as 9.
  • a part 5 as it has just been described can be made of plastic material in particular based on polyolefin or in a complex based on polyamide. It can also be made of paper or cardboard. It can be a complex.
  • the piece 5 also constitutes a label for the package 1 and receives, for this purpose, informative, decorative, advertising or functional prints 22.
  • informative, decorative, advertising or functional prints 22 there may be mentions concerning the implementation of the easy opening device such as arrows (see FIG. 1).
  • the film is produced before it is placed on a content to be packaged.
  • a plurality of easy-opening parts 5 spaced at appropriate intervals are applied to the film 3, depending on the packaging to be produced.
  • the film 3 provided with easy-opening parts 5 is wound on a reel for later use.
  • the invention also relates to the tubular film produced by this method.
  • a method of producing a package 1 as described has been such that the contents 2 are wrapped with the film 3, the latter being provided with an easy opening device.
  • the content 2 is first wrapped with the film 3 and closed.
  • the film 3 on itself, in particular by welding or gluing and in particular by an ultrasonic welding technique, then, optionally, heat shrinkage is carried out in order to properly press the film 3 around the content 2.
  • a film 3 shaped into a tube provided with a longitudinal weld or longitudinal bonding 4 and with an easy opening part, by means of the process described above.
  • the film reel is unwound over the desired length of tube 3 which corresponds to the predetermined distance over which the easy opening device has been affixed and it is cut along this length.
  • the content 2 to be packaged is then placed inside the tubular film 3 thus cut.
  • the openings of the tubular film 3 are welded or glued, with the possibility of evacuating the air before the final closing step.
  • the part 5 is placed so as to position on the one hand the separation means 6 with regard to the weld or bonding line 4. And, on the other hand, to secure the two parts 7a, 7b to the film 3 in particular in the zones 18.
  • the part 5 is applied to the location of a zone of least resistance of a welding line or film bonding 3.
  • An easy opening part intended for the device which has just been described therefore has, in one of the embodiments considered the following characteristics: it is flexible but substantially inextensible and is in the form of a label, a film or a piece of film. It comprises means of separation 6 into two parts 7a, 7b.
  • Each part 7a, 7b comprises two zones, namely a first zone 18 and a second zone 17.
  • these zones are referenced 17a and 18a.
  • 17b and 18b are referenced.
  • the zones 18a, 18b adjoining the means 6 are joined to the film 3 by means of the joining means 8.
  • the zones 17a, 17b are adjacent to the zones 18a, 18b respectively as well as to the longitudinal free edges 11 of the part 5. They are not not attached to the film 3 or can be easily detached from it. Consequently, the part 5 is devoid, in the zones 18a, 18b of the securing means 8 with which it is provided in the zones 17a, 17b.
  • the part 5 can also have the embodiment of FIG. 7 in which it is produced in two distinct parts while being therefore - for this reason - devoid of the separation means 6.
  • the separation means 6 are made active when they are provided.
  • the grasping zone 14 is grasped and pulled, the package 1 being held elsewhere, so as to tear the tab 12 at the location of the lines of weakest resistance 13a, 13b.
  • the part 5 has two separate parts 7a, 7b.
  • This step of implementing the securing means 6 is illustrated diagrammatically in FIG. 5a.
  • the user can enter the input means 9, namely the zones 17a, 17b.
  • This entry is made for example between the thumbs and the index fingers of the user as shown schematically in Figure 5b with the reference D.
  • the entry of the areas 17a, 17b is made all the easier since they are not secured to the film 3 or are only weakly secured, as has been mentioned.
  • the user can then pull on the two parts, 7a, 7b in the direction of the arrows F (FIG. 5), in order to separate them from one another.
  • This operation is made all the more easy as the part 5 has a certain flexibility making it possible to be folded or curved at the location of the lines 19.
  • the user can, by continuing the traction already mentioned, gradually move the film 3 away from the content 2 in order, finally, to completely release the content.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
EP96401301A 1995-06-14 1996-06-14 Vorrichtung zum Oeffnen eines Beutels aus Kunststoffolie Withdrawn EP0748745A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9507086 1995-06-14
FR9507086A FR2735451B1 (fr) 1995-06-14 1995-06-14 Dispositif d'ouverture facile d'un emballage ; paquet constitue d'un contenu et d'un tel emballage et son procede de realisation

Publications (1)

Publication Number Publication Date
EP0748745A1 true EP0748745A1 (de) 1996-12-18

Family

ID=9479989

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96401301A Withdrawn EP0748745A1 (de) 1995-06-14 1996-06-14 Vorrichtung zum Oeffnen eines Beutels aus Kunststoffolie

Country Status (5)

Country Link
US (1) US5839648A (de)
EP (1) EP0748745A1 (de)
CA (1) CA2178994A1 (de)
FR (1) FR2735451B1 (de)
ZA (1) ZA965089B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2857322A1 (de) * 2013-10-04 2015-04-08 Starlinger & Co Gesellschaft m.b.H. Sack und Sack-Herstellungsverfahren

Families Citing this family (14)

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US5958483A (en) * 1997-10-25 1999-09-28 Anders; Irving Package for collecting and segregating particulate food debris
FR2803582B1 (fr) * 2000-01-07 2002-06-14 Bel Fromageries Element pour un emballage d'une portion d'un produit alimentaire et ensemble comprenant un tel emballage et une portion d'un produit alimentaire
US6540401B2 (en) 2001-02-15 2003-04-01 Mangar Industries, Inc. Side seal construction for a sterile pouch
KR100779470B1 (ko) * 2001-05-22 2007-11-27 유니챰 가부시키가이샤 음순간 패드 개별 포장용 포장 용기
US20030019780A1 (en) * 2001-07-23 2003-01-30 Parodi Gustavo Jose Camargo Easy opening, re-closeable bag
US6889483B2 (en) 2002-10-31 2005-05-10 Cryovac, Inc. Easy-opening feature for flexible packages and process and apparatus for forming same
US20050045503A1 (en) * 2003-08-26 2005-03-03 Patrick Wong Package closure device
US20080216946A1 (en) * 2007-03-05 2008-09-11 Mark White Adhesive tape
US9023003B1 (en) * 2009-10-06 2015-05-05 Jennifer J. Bracci Neonatal absorbency pad and related methods
GB2511311A (en) * 2013-02-27 2014-09-03 British American Tobacco Co A blank of wrapping material
US20220017792A1 (en) * 2020-07-20 2022-01-20 William B. Twitty Foam masking tape installer, foam masking tapes, and methods of installing the same using the installer
US20220411149A1 (en) * 2021-06-25 2022-12-29 Apple Inc. Packaging with tamper-evident seal
US11964807B2 (en) * 2021-06-25 2024-04-23 Apple Inc. Packaging with tamper-evident seal
JP7408004B1 (ja) 2023-09-30 2024-01-04 睦晃 嶽▲崎▼ 開口形成シール

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EP0579030A2 (de) * 1992-07-14 1994-01-19 Societe Des Produits Nestle S.A. Leicht zu öffnende Verpackung

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US1587280A (en) * 1921-08-04 1926-06-01 James L Burke Package, wrapper therefor, and method of opening the same
GB883408A (en) * 1960-06-27 1961-11-29 St Regis Paper Co End caps for bread wraps and method of applying same
EP0579030A2 (de) * 1992-07-14 1994-01-19 Societe Des Produits Nestle S.A. Leicht zu öffnende Verpackung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2857322A1 (de) * 2013-10-04 2015-04-08 Starlinger & Co Gesellschaft m.b.H. Sack und Sack-Herstellungsverfahren

Also Published As

Publication number Publication date
CA2178994A1 (fr) 1996-12-15
FR2735451B1 (fr) 1997-07-25
US5839648A (en) 1998-11-24
ZA965089B (en) 1997-01-22
FR2735451A1 (fr) 1996-12-20

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