EP0060411A1 - Dispositif d'ouverture pour emballage - Google Patents

Dispositif d'ouverture pour emballage Download PDF

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Publication number
EP0060411A1
EP0060411A1 EP82101328A EP82101328A EP0060411A1 EP 0060411 A1 EP0060411 A1 EP 0060411A1 EP 82101328 A EP82101328 A EP 82101328A EP 82101328 A EP82101328 A EP 82101328A EP 0060411 A1 EP0060411 A1 EP 0060411A1
Authority
EP
European Patent Office
Prior art keywords
opening arrangement
packing container
accordance
opening
plastic film
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Withdrawn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
EP82101328A
Other languages
German (de)
English (en)
Inventor
Kenth Jacobsson
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.)
Tetra Laval Holdings and Finance SA
Tetra Pak Developpement SA
Tetra Pak GmbH and Co
Original Assignee
Tetra Laval Holdings and Finance SA
Tetra Pak Developpement SA
Tetra Pak Rausing and Co KG
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 Tetra Laval Holdings and Finance SA, Tetra Pak Developpement SA, Tetra Pak Rausing and Co KG filed Critical Tetra Laval Holdings and Finance SA
Publication of EP0060411A1 publication Critical patent/EP0060411A1/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Withdrawn legal-status Critical Current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
    • B65D75/5827—Tear-lines provided in a wall portion
    • B65D75/5833—Tear-lines provided in a wall portion for tearing out a portion of the wall
    • B65D75/5838—Tear-lines provided in a wall portion for tearing out a portion of the wall combined with separate fixed tearing means, e.g. tabs
    • 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
    • B65D75/04—Articles or materials wholly enclosed in single sheets or wrapper blanks
    • B65D75/06—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks initially folded to form tubes
    • B65D75/12—Articles or materials wholly enclosed in single sheets or wrapper blanks in sheets or blanks initially folded to form tubes with the ends of the tube closed by flattening and heat-sealing
    • 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
    • B65D75/26—Articles or materials wholly enclosed in laminated sheets or wrapper blanks

Definitions

  • the present invention relates to an opening arrangement for packing containers, which at least in the area of the opening arrangement comprise a wall portion of oriented plastic film.
  • Aerated products such as e.g. beer, refreshing beverages etc. are packed in drums and bottles, but also in "bag- or cushion-shaped" packing containers, which are manufactured from comparatively thin, flexible, hard plastic material.
  • a packing container of this type is described in Swedish patent no. 75120220.
  • One difficulty in the formation of these packages consists in providing an opening arrangement which, whilst being capable of withstanding the relatively high internal pressure in the package, can easily be opened by the consumer, when the contents of the package are to be emptied.
  • the packing container material is relatively thin and unstable, conventional caps or closing devices cannot be used.
  • Opening arrangements for this type of packing container proposed up to now comprise one or more holes punched into the packing container wall which are covered by means of a common tape or tear strip, which is sealed to the outside of the packing container wall, so that it covers the emptying openings provided.
  • This type of opening arrangement is easy to open, but may detach itself from the packing oontainer wall under unfavourable conditions, e.g. when the internal pressure in the package increases, owing to the packing container having been exposed to a high temperature for a prolonged period of time. Furthermore, it is difficult, owing to these holes punched into the packing container wall, to supply a packing container provided with this type of opening arrangement, which also during a long period of storage retains the carbon dioxide content of the material contained therein.
  • an opening arrangement for packing containers which comprise,at least in the area of the opening arrangement, a wall portion of oriented plastic film, has been given the characteristic that a part located outside the package wall and serving as a pull-lug is sealed to the oriented plastic film by means of a weld which has a projection serving as a point of application of force which points against the direction of pulling.
  • a substantially"cushion-shaped packing container 1 which has been made of a flexible plastic material and which has been formed into a tube and closed at opposite ends by means of seals 2 extending transversely in relation to the tube.
  • the plastic film forming the packing container 1 consists of a thin, hard plastics, in particular biaxially oriented acrylonitrile which has a thickness of approx. 0.2 mm. Thanks to the biaxial orientation, the plastic film obtains improved properties and, among other things, its capacity to withstand the internal pressure arising in the packing container is increased. However, this is well-known to those versed in the art, and does not have to be described in detail.
  • the plastic film may also be mono-oriented, but in this case it is important that the direction of orientation is such that the direction of pulling of the opening arrangement coincides with the direction of orientation.
  • the plastic film may also be non-oriented if the packing container is intended for contents which do not generate any appreciable internal pressure, but in such a case the packing container wall must in the area of the opening arrangement comprise a wall portion of oriented plastic film, since the orientation of the plastic film is a precondition for a correct functioning of the opening arrangement in accordance with the invention.
  • the opening arrangement in accordance with the invention comprises a part of strip 3 serving as a pull-lug, which is sealed to the packing container wall by means of a weld 4 which has a projection 5, serving as a point of application of force which points against the direction of pulling.
  • the direction of pulling is indicated in fig.l by means of an arrow 6 and, as mentioned earlier, this arrow also indicates the direction of orientation if the packing container material is mono-oriented.
  • the weld 4 is substantially T-shaped.
  • the weld is so oriented that the point of the T faces in the direction opposite to the direction of pulling, which means that the said point will form a point of application of force on opening of the packing container.
  • the pulling force which acts upon the weld when the packing container is to be opened, is concentrated, owing to the shape of the weld, on the point of application of force, which greatly facilitates the rupture of the packing container wall.
  • the packing container material splits open without difficulty thanks to its first orientation, the splits running/from the point of application of force in both directions along the legs of the V-shaped weld, to progress subsequently in the direction of orientation of the material, as shown in fig.2.
  • the width of the emptying opening 7 produced is regulated in that the linear distance between the ends of the legs of the V-shaped weld are chosen to be equal to the desired width of the emptying opening.
  • the pull-lug 3 together with the torn-up area of the packing container wall should be retained in one piece with the packing container, it is appropriate to locate the opening arrangement at some distance in front of the sealing fin 2 which extends over the width of the packing container right-angled to the direction of pulling. The sealing fin will then also interrupt the tearing up of the packing container wall so that an emptying opening of an appropriate size is obtained.
  • the initiation of the opening is facilitated, if the apex angle of the V-shaped weld is ⁇ 160° and preferably amounts to 90°.
  • a 90° apex angle moreover, produces an emptying opening of a suitable shape which makes it easy to pour the contents out of the packing container in the form of a well collected and concentrated stream.
  • the pull-lug 3 is constituted of a material strip of the same material as the packing container wall.
  • the pull-lug as well as the packing container wall may consist of laminated material which comprises layers of different types of plastics, aluminium foil or similar materials. It is a precondition for the opening arrangement in accordance with the invention, however, that at least the laminate layer facing towards the materialsstrip must consist of sealable, oriented plastic film. In a mono-oriented plastic film, moreover the direction of orientation of the packing container wall (and of the strip) must be parallel with the direction of pulling.
  • the pull-lug to consist of a plastic strip whose thickness is 20-70% greater than the material thickness of the packing material wall.
  • the combination of an oriented packing container wall of 0.2 mm thickness and a strip of the same material (acrylonitrile) of 0.3 mm thickness has proved particularly advantageous and an extra thickness for the strip part of about 50% is therefore preferred.
  • the strip and the container wall may have the same thickness, since the orientation of the packing container material will nevertheless cause the rupture to take place there and not in the strip.
  • the weld 4 is formed by placing the strip in the correct position against the outside of the packing container material and then pressing a welding tool of the desired shape against the outside of the strip and the inside of the packing container wall, whereupon, through high frequency sealing and simultaneous pressing together the material is heated to a temperature of 180 - 200°C, which produces a completely homogeneous weld and a depression corresponding to the shape of the weld in the packing container wall as well as in the material strip. This depression diminishes the thickness of the packing container wall by 10 - 30%. Through this the packing container wall is weakened to such an extent that it is easily ruptured in the point of application of force 5, when the material strip 3 is subjected to tensile stresses.
  • a welding tool of a shape corresponding to the desired shape of the weld e.g. the V-shape described
  • a co-operating welding tool with a heatable plane working surface is utilized, whose area is several times larger than the area of the working surface of the co-operating working surface.
  • an easily openable and robust opening arrangement for packing containers which have been manufactured from a flexible, oriented, hard plastic material is thus provided.
  • the opening arrangement is inexpensive and particularly simple to manufacture, and therefore meets all the demands which may be made on an opening arrangement for a modern packing container of the non-returnable type.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Closures For Containers (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Bag Frames (AREA)
EP82101328A 1981-03-12 1982-02-22 Dispositif d'ouverture pour emballage Withdrawn EP0060411A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8101575A SE451830B (sv) 1981-03-12 1981-03-12 Oppningsanordning for forpackningsbehallare
SE8101575 1981-03-12

Publications (1)

Publication Number Publication Date
EP0060411A1 true EP0060411A1 (fr) 1982-09-22

Family

ID=20343324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82101328A Withdrawn EP0060411A1 (fr) 1981-03-12 1982-02-22 Dispositif d'ouverture pour emballage

Country Status (3)

Country Link
EP (1) EP0060411A1 (fr)
JP (1) JPS57163659A (fr)
SE (1) SE451830B (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104548A2 (fr) * 1982-09-23 1984-04-04 Robert Bosch Gmbh Couvercle de récipient avec dispositif d'ouverture
EP0129102A2 (fr) * 1983-06-15 1984-12-27 Robert Bosch Gmbh Couvercle avec dispositif d'ouverture
WO1986007334A1 (fr) * 1985-06-11 1986-12-18 Mölnlycke AB Emballage d'articles steriles
EP0086214B1 (fr) * 1981-08-21 1987-05-06 Teich Aktiengesellschaft Emballage avec enveloppe etanche aux gaz
EP0226835A2 (fr) * 1985-12-21 1987-07-01 Unilever N.V. Emballage en matière souple
EP0249337A2 (fr) * 1986-05-14 1987-12-16 FORMAN, Harold Récipient avec couvercle refermable
FR2639002A1 (fr) * 1988-11-14 1990-05-18 Monoplast Sa Procede de fabrication d'un recipient a demoulage et recipients obtenus selon ce procede
EP0379138A1 (fr) * 1989-01-19 1990-07-25 Georg Dr. Bolte Emballage à ouverture facile pour matériaux pouvant être versés
EP0478812A1 (fr) * 1990-10-01 1992-04-08 Societe Des Produits Nestle S.A. Emballage pour produit alimentaire
WO1992010411A1 (fr) * 1990-12-14 1992-06-25 Krehalon Industrie B.V. Produit alimentaire sous forme de saucisse
EP0540184A1 (fr) * 1991-10-02 1993-05-05 American National Can Company Emballage entaillé avec un laser
FR2766794A1 (fr) * 1997-07-29 1999-02-05 Soltex Soc Civ Dispositif pour ouvrir et fermer un recipient et recipient muni d'un tel dispositif
FR2804658A1 (fr) * 2000-02-08 2001-08-10 Panzani Sachet pour pates alimentaires et procede et installation de fabrication d'un tel sachet
WO2001098172A1 (fr) * 2000-06-21 2001-12-27 Sasib Packaging Italia S.R.L. Emballage de pates
US20120266563A1 (en) * 2010-01-19 2012-10-25 Easy2Open B.V. Method and device for packaging a product, and a packaged product
KR20180123361A (ko) * 2017-05-08 2018-11-16 주식회사 면사랑 국수 포장지 및 그의 제조 방법

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59186262U (ja) * 1983-05-31 1984-12-11 冨士シ−ル工業株式会社 包装体
JPS6043570U (ja) * 1983-09-01 1985-03-27 凸版印刷株式会社 取出口付き包装袋
JPS6047267U (ja) * 1983-09-06 1985-04-03 凸版印刷株式会社 取出口付き包装袋
JPS60110660A (ja) * 1983-11-07 1985-06-17 藤森工業株式会社 包装用容器
JPS61137559U (fr) * 1985-02-18 1986-08-26
CH665403A5 (fr) * 1985-11-11 1988-05-13 Sapal Plieuses Automatiques Enveloppe pour l'emballage de produits, procede de fabrication d'une telle enveloppe et son utilisation.
JPS6295566U (fr) * 1985-12-03 1987-06-18
WO2015072204A1 (fr) * 2013-11-13 2015-05-21 株式会社クレハ Patte d'ouverture et emballage doté de patte d'ouverture

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302856A (en) * 1965-04-05 1967-02-07 Phillips Petroleum Co Containers
US3711011A (en) * 1970-05-04 1973-01-16 Action Packaging Corp Resealable packaging device
FR2143270A1 (en) * 1971-06-25 1973-02-02 Ici Ltd Hydrocarbon conversion - with a catalyst contg a platinum group metal,rhenium,tin and halogen
NL7611456A (nl) * 1975-10-28 1977-05-02 Ziristor Ab Verpakking voor in het bijzonder onder druk ge- brachte vloeistoffen.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS426795Y1 (fr) * 1966-11-09 1967-03-30
JPS5464173A (en) * 1977-10-28 1979-05-23 Teijin Ltd Tire cord fabric and production thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3302856A (en) * 1965-04-05 1967-02-07 Phillips Petroleum Co Containers
US3711011A (en) * 1970-05-04 1973-01-16 Action Packaging Corp Resealable packaging device
FR2143270A1 (en) * 1971-06-25 1973-02-02 Ici Ltd Hydrocarbon conversion - with a catalyst contg a platinum group metal,rhenium,tin and halogen
NL7611456A (nl) * 1975-10-28 1977-05-02 Ziristor Ab Verpakking voor in het bijzonder onder druk ge- brachte vloeistoffen.

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0086214B1 (fr) * 1981-08-21 1987-05-06 Teich Aktiengesellschaft Emballage avec enveloppe etanche aux gaz
EP0104548A3 (en) * 1982-09-23 1985-07-03 Robert Bosch Gmbh Container closure with an opening device
EP0104548A2 (fr) * 1982-09-23 1984-04-04 Robert Bosch Gmbh Couvercle de récipient avec dispositif d'ouverture
EP0129102B1 (fr) * 1983-06-15 1988-04-20 Robert Bosch Gmbh Couvercle avec dispositif d'ouverture
EP0129102A2 (fr) * 1983-06-15 1984-12-27 Robert Bosch Gmbh Couvercle avec dispositif d'ouverture
WO1986007334A1 (fr) * 1985-06-11 1986-12-18 Mölnlycke AB Emballage d'articles steriles
US4781297A (en) * 1985-06-11 1988-11-01 Molnlycke Ab Readily tearable package for sterile articles
EP0226835A2 (fr) * 1985-12-21 1987-07-01 Unilever N.V. Emballage en matière souple
EP0226835A3 (fr) * 1985-12-21 1988-10-19 Unilever N.V. Emballage en matière souple
EP0249337A3 (en) * 1986-05-14 1988-10-05 Harold Forman Container with resealable cover
EP0249337A2 (fr) * 1986-05-14 1987-12-16 FORMAN, Harold Récipient avec couvercle refermable
FR2639002A1 (fr) * 1988-11-14 1990-05-18 Monoplast Sa Procede de fabrication d'un recipient a demoulage et recipients obtenus selon ce procede
EP0379138A1 (fr) * 1989-01-19 1990-07-25 Georg Dr. Bolte Emballage à ouverture facile pour matériaux pouvant être versés
EP0478812A1 (fr) * 1990-10-01 1992-04-08 Societe Des Produits Nestle S.A. Emballage pour produit alimentaire
WO1992010411A1 (fr) * 1990-12-14 1992-06-25 Krehalon Industrie B.V. Produit alimentaire sous forme de saucisse
EP0540184A1 (fr) * 1991-10-02 1993-05-05 American National Can Company Emballage entaillé avec un laser
FR2766794A1 (fr) * 1997-07-29 1999-02-05 Soltex Soc Civ Dispositif pour ouvrir et fermer un recipient et recipient muni d'un tel dispositif
FR2804658A1 (fr) * 2000-02-08 2001-08-10 Panzani Sachet pour pates alimentaires et procede et installation de fabrication d'un tel sachet
EP1123874A1 (fr) * 2000-02-08 2001-08-16 Panzani SA Sachet pour pâtes alimentaires et procédé et installation de fabrication d'un tel sachet
WO2001098172A1 (fr) * 2000-06-21 2001-12-27 Sasib Packaging Italia S.R.L. Emballage de pates
US20120266563A1 (en) * 2010-01-19 2012-10-25 Easy2Open B.V. Method and device for packaging a product, and a packaged product
US9139321B2 (en) * 2010-01-19 2015-09-22 Easy2Open B.V. Method and device for packaging a product
KR20180123361A (ko) * 2017-05-08 2018-11-16 주식회사 면사랑 국수 포장지 및 그의 제조 방법

Also Published As

Publication number Publication date
SE451830B (sv) 1987-11-02
JPS57163659A (en) 1982-10-07
SE8101575L (sv) 1982-09-13

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LU NL

17P Request for examination filed

Effective date: 19830214

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19840605

RIN1 Information on inventor provided before grant (corrected)

Inventor name: JACOBSSON, KENTH