EP0745539A1 - Leicht zu öffnende Verpackung, insbesondere für Lebensmittel und Verfahren zu deren Herstellung - Google Patents

Leicht zu öffnende Verpackung, insbesondere für Lebensmittel und Verfahren zu deren Herstellung Download PDF

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Publication number
EP0745539A1
EP0745539A1 EP96303802A EP96303802A EP0745539A1 EP 0745539 A1 EP0745539 A1 EP 0745539A1 EP 96303802 A EP96303802 A EP 96303802A EP 96303802 A EP96303802 A EP 96303802A EP 0745539 A1 EP0745539 A1 EP 0745539A1
Authority
EP
European Patent Office
Prior art keywords
film
heat
packing
article
zone
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.)
Granted
Application number
EP96303802A
Other languages
English (en)
French (fr)
Other versions
EP0745539B1 (de
Inventor
Jean-Pierre Faivre
Guy Desveaux
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.)
Cryovac LLC
Original Assignee
Grace SA
WR Grace and Co Conn
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 Grace SA, WR Grace and Co Conn filed Critical Grace SA
Publication of EP0745539A1 publication Critical patent/EP0745539A1/de
Application granted granted Critical
Publication of EP0745539B1 publication Critical patent/EP0745539B1/de
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
    • 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

Definitions

  • the present invention relates to a packing for an article such as a foodstuff which may be easily opened.
  • the present invention proposes a packing for an article permitting easy opening thereof while preserving the vacuum or the modified atmosphere therein as long as the packing is not opened.
  • packing for an article comprising a film of a heat-shrinkable material in which to wrap the article, characterized in that the packing has an edge zone isolated from the rest of the film by an area where opposed faces of the film are sealed to each other, and has a cut in the zone extending inwards from one edge of the film, whereby, on heat-shrinkage of the film around a wrapped article a tongue is formed to facilitate opening.
  • the invention also provides such packing wherein the film has been wrapped around the article and has been heat-sealed over at least one portion of its periphery and then has been heat-shrunk so as to enclose more tightly the article, the zone containing the cut being hermetically isolated from the article.
  • the invention also provides a method of making a packing for an article such as a foodstuff including the steps of wrapping the article in a film of a heat-shrinkable material, heat-sealing the film over at least one portion of its periphery and then heat-shrinking the film, characterized in that the packing is formed with an edge zone isolated from the rest of the film by an area where opposed faces of the film are sealed to each other, and with a cut in the zone extending inwards from one edge of the film, whereby, on heat-shrinkage of the film around a wrapped article a tongue is formed to facilitate opening.
  • a tongue is formed which projects outwards from the resulting package.
  • This tongue has a cut enabling relatively easy tearing and opening of the package.
  • the reference numeral 1 designates a packing bag made from a synthetic film of a heat-shrinkable thermoplastic material, one end of which is hermetically closed by a transverse heat-sealed seam 2.
  • An article 3 such as a food product is inserted into the packing bag 1 and the whole is brought into a machine for providing the vacuum within the bag 1 and then the other end of the bag 1 is hermetically closed by a second transverse heat-sealed seam 4 and cut off to the desired length of the bag 1.
  • the whole thus formed is then brought into a hot air tunnel or a hot water bath at a predetermined temperature for heat-shrinking the film of the bag 1 so that the latter tightly wraps the article 3.
  • the packing bag 1 in its initial state i.e. before being heat-shrunk comprises a zone 5 hermetically isolated from the remainder of the film of the bag 1 and extending from a longitudinal edge 1a of the bag 1.
  • the zone 5 is hermetically isolated by heat-sealing opposed faces of the film over the whole area of the zone 5 whereas according to an alternative embodiment shown on Figure 3 this zone 5 is hermetically isolated by heat-sealing opposed faces of the film 1 along only the periphery 6 of the zone 5.
  • a cut 7 is made in the hermetically isolated zone 5 inwards starting from the edge 1a of the bag 1.
  • the hermetically isolated zone 5 is preferably distinct from a heat-sealed portion 2, 4 of the bag 1 and preferably this zone is located near a heat-sealed seam, in the present case the seam 2.
  • the hermetically isolated zone 5 and the cut 7 are described hereinabove as being formed in the packing bag 1 intended subsequently to receive an article 3 but they may be made during or after the steps of evacuating the bag 1 and of heat-sealing and severing the latter, the essential point being that they be formed before the step of heat-shrinking the film forming the bag 1.
  • the cut 7 may be carried out by any suitable means for example by a mechanical cutting means either automatically during the making of the bag 1 or during the steps of packing the article 3 prior to the heat-shrinking operation or manually with the assistance of a cutting tool before the heat-shrinking step.
  • such packings are made in a horizontal filming machine from a heat-shrinkable film 1 shaped into a tube by a longitudinal welding S1 while at the same time the article to be packed, such as for example a foodstuff placed upon a tray or a small boat-shaped trough is inserted into this tube under a modified atmosphere comprising for example a mixture of oxygen, of carbon dioxide and of nitrogen. Then after withdrawal of the excess gaseous mixture the tube is closed at its two ends by two hermetic transverse heat-seals S2 and S3, respectively, to preserve the modified atmosphere within the packing thus made.
  • Figure 6 shows that a zone 5 hermetically isolated from the remainder of the packing film has been provided by heat-sealing in the same conditions as those of Figure 1 or of Figure 3 while being preferably located near one of the transverse welds S2 and S3.
  • the films used for this type of packing preferably are of the barrier film type known per se with a core layer forming an oxygen barrier and for example based upon a copolymer of ethylene and of vinyl alcohol, or upon polyvinyl alcohol or upon polyvinylidenechloride (PVDC).
  • the packing which has just been described therefore permits the opening of the packing to be facilitated while guaranteeing a total protection of the vacuum or of the modified atmosphere in the packing as long as the packing has not been opened.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Vacuum Packaging (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
EP19960303802 1995-05-29 1996-05-29 Verfahren zur herstellung einer leicht zu öffnenden verpackung für produkte wie lebensmittel Expired - Lifetime EP0745539B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9506325 1995-05-29
FR9506325A FR2734792B1 (fr) 1995-05-29 1995-05-29 Emballage d'article, tel que produit alimentaire, pouvant etre facilement ouvert et procede de realisation d'un tel emballage.

Publications (2)

Publication Number Publication Date
EP0745539A1 true EP0745539A1 (de) 1996-12-04
EP0745539B1 EP0745539B1 (de) 2002-01-23

Family

ID=9479436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960303802 Expired - Lifetime EP0745539B1 (de) 1995-05-29 1996-05-29 Verfahren zur herstellung einer leicht zu öffnenden verpackung für produkte wie lebensmittel

Country Status (6)

Country Link
EP (1) EP0745539B1 (de)
BR (1) BR9602512A (de)
CA (1) CA2177557A1 (de)
DE (1) DE69618714T2 (de)
FR (1) FR2734792B1 (de)
MX (1) MX9602024A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0957044A1 (de) * 1998-05-11 1999-11-17 Cryovac, Inc. Leicht zu öffnende Vorrichtung für hermetische geschrumpfte Taschen
EP1081060A1 (de) * 1999-08-20 2001-03-07 Elsaesser Verpackungen Ag Verpackungsbeutel mit Aufreisskerbe
US6499598B2 (en) 1999-11-15 2002-12-31 Cryovac, Inc. Easy opening system for shrunk hermetic bags
EP1291292A2 (de) * 2001-08-31 2003-03-12 Huhtamaki Ronsberg Zweigniederlassung der Huhtamaki Deutschland GmbH & Co. KG. Schlauchbeutel aus innen- und/oder aussen-siegelnder Folie
WO2007082347A1 (en) * 2006-01-18 2007-07-26 Amcor Limited A polymer bag
US8021049B2 (en) 2008-07-18 2011-09-20 Cryovac, Inc. Bag of a heat-shrinkable gas-barrier thermoplastic film
EP2810894A1 (de) * 2013-06-03 2014-12-10 Philip Morris Products S.A. Bahnmaterial mit Lasche

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6889483B2 (en) 2002-10-31 2005-05-10 Cryovac, Inc. Easy-opening feature for flexible packages and process and apparatus for forming same

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1557778A (de) * 1967-11-28 1969-02-21
DE1586766A1 (de) * 1967-12-21 1970-05-21 Kalle Ag Beutelverpackung
US3641732A (en) * 1970-03-05 1972-02-15 Masaaki Fujio Method of packaging packs or articles with a heat-shrinking material
GB1364300A (en) * 1971-06-25 1974-08-21 Ims Ltd Packages for injectible medication
EP0289209A2 (de) * 1987-04-29 1988-11-02 Du Pont Canada Inc. Leicht zu öffnende Tasche
AU597130B2 (en) * 1986-12-23 1990-05-24 David Graham Ellis Improvements in packages
US5060803A (en) * 1991-01-17 1991-10-29 Beer Jeffrey S Gussetted flexible package with tear notch to form pour spout

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1557778A (de) * 1967-11-28 1969-02-21
DE1586766A1 (de) * 1967-12-21 1970-05-21 Kalle Ag Beutelverpackung
US3641732A (en) * 1970-03-05 1972-02-15 Masaaki Fujio Method of packaging packs or articles with a heat-shrinking material
GB1364300A (en) * 1971-06-25 1974-08-21 Ims Ltd Packages for injectible medication
AU597130B2 (en) * 1986-12-23 1990-05-24 David Graham Ellis Improvements in packages
EP0289209A2 (de) * 1987-04-29 1988-11-02 Du Pont Canada Inc. Leicht zu öffnende Tasche
US5060803A (en) * 1991-01-17 1991-10-29 Beer Jeffrey S Gussetted flexible package with tear notch to form pour spout

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0957044A1 (de) * 1998-05-11 1999-11-17 Cryovac, Inc. Leicht zu öffnende Vorrichtung für hermetische geschrumpfte Taschen
EP1081060A1 (de) * 1999-08-20 2001-03-07 Elsaesser Verpackungen Ag Verpackungsbeutel mit Aufreisskerbe
US6499598B2 (en) 1999-11-15 2002-12-31 Cryovac, Inc. Easy opening system for shrunk hermetic bags
EP1291292A2 (de) * 2001-08-31 2003-03-12 Huhtamaki Ronsberg Zweigniederlassung der Huhtamaki Deutschland GmbH & Co. KG. Schlauchbeutel aus innen- und/oder aussen-siegelnder Folie
EP1291292A3 (de) * 2001-08-31 2003-12-10 Huhtamaki Ronsberg Zweigniederlassung der Huhtamaki Deutschland GmbH & Co. KG. Schlauchbeutel aus innen- und/oder aussen-siegelnder Folie
WO2007082347A1 (en) * 2006-01-18 2007-07-26 Amcor Limited A polymer bag
US8021049B2 (en) 2008-07-18 2011-09-20 Cryovac, Inc. Bag of a heat-shrinkable gas-barrier thermoplastic film
EP2810894A1 (de) * 2013-06-03 2014-12-10 Philip Morris Products S.A. Bahnmaterial mit Lasche
WO2014195264A1 (en) * 2013-06-03 2014-12-11 Philip Morris Products S.A. Sheet material with tab

Also Published As

Publication number Publication date
DE69618714D1 (de) 2002-03-14
FR2734792B1 (fr) 1997-07-18
FR2734792A1 (fr) 1996-12-06
EP0745539B1 (de) 2002-01-23
DE69618714T2 (de) 2002-06-13
BR9602512A (pt) 1998-09-08
MX9602024A (es) 1997-08-30
CA2177557A1 (en) 1996-11-30

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