US20120318801A1 - Container with closing membrane - Google Patents
Container with closing membrane Download PDFInfo
- Publication number
- US20120318801A1 US20120318801A1 US13/581,375 US201113581375A US2012318801A1 US 20120318801 A1 US20120318801 A1 US 20120318801A1 US 201113581375 A US201113581375 A US 201113581375A US 2012318801 A1 US2012318801 A1 US 2012318801A1
- Authority
- US
- United States
- Prior art keywords
- edge
- tear
- tab
- beaker
- flange
- 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.)
- Abandoned
Links
Images
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
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/10—Container closures formed after filling
- B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
- B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
- B65D77/2028—Means for opening the cover other than, or in addition to, a pull tab
- B65D77/2032—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container
- B65D77/204—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container the cover having an unsealed portion for initiating removal
-
- 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
- B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
- B65D77/10—Container closures formed after filling
- B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
- B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to the container
- B65D77/2028—Means for opening the cover other than, or in addition to, a pull tab
- B65D77/2032—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container
Definitions
- the invention concerns a container with an externally protruding, annular flange which delimits an opening and is delimited by a beaker edge, and with a film-like closing membrane which, forming a common annular connecting surface delimited by an inner ring edge and an outer ring edge, is sealed against the flange to close the opening, and which can be peeled off the flange and is delimited by a membrane edge, with a tear-off tab protruding beyond the beaker edge.
- containers such as for example deep-drawn, injection-moulded or otherwise formed containers
- lid in particular after filling, wherein the lid or closing membrane lies across the full surface of the flange and for example is attached tightly sealing and peelable by sealing or gluing to the flange.
- Such containers, dishes, menu trays for example with one or more compartments, beakers, small packings etc. are known for example for packing foodstuffs of all types, e.g. dairy products, in particular yoghurt, whipping cream, sour cream, coffee cream, finished preparations of salads or semi- or full preserves, precooked or otherwise prepared meals, drinks such as fruit and vegetable juice or drinking water.
- the lids, boards or closing membranes are for example punched out of an endless film-like lid material and stacked.
- the lid stacks are supplied to a packaging machine and the separated or unstacked lids with a sealing layer are continuously sealed by means of a sealing tool onto the container edge of the previously filled containers in the flange region of the container.
- the lids are often embossed or fitted with spacers when processed from magazines.
- the lid film can also be processed from a roll and punched out together after sealing with the beaker.
- the lid material is sealed flush to the beaker edge and the lid is typically raised at a tear-off tab.
- the tear-off tab By pulling the tear-off tab, the lid is detached from the seal flange by peeling without tearing and thus preventing a complete opening of the container.
- opening the lid leads to a particularly unfavourable pull angle in which the film is easily torn.
- the tensile force on opening the lid acts particularly strongly on the lid edge so that the lid no longer peels from the beaker but tears.
- the tendency to tear is particularly high at the start of the tear-off process as the lid edge here requires particularly little force to tear. As opening progresses, the risk of tearing increasingly diminishes.
- a relatively firm seal e.g. above 8 Nm/15 mm and the typical flush sealing of the lid film with the outer beaker edge contribute particularly greatly to tearing, as the lid film is virtually torn away from the seal edge.
- the relatively low tear or tear progression resistance of the lid materials acts directly on the edge of the lid.
- the tearing of the lid material can be prevented by increasing the material thickness or by lamination with tear-resistant films. Both solutions substantially increase the costs.
- WO 2008/0116444 A1 discloses, to prevent tearing in peelable lids sealed to a container edge, reinforcing the lid edge e.g. by folding at least in the critical region.
- WO 2008/068326 A1 discloses in one embodiment that the sealing film which is sealed to the lid ring to prevent tearing of the film edge during the pull-off process has an edge strip extending over the entire edge of the film and protruding beyond its fixing region.
- the closing film has “ears” protruding externally beyond the fixing region on both sides of the grip tab.
- the invention is based on the object of designing, in a container of the type cited initially, the connection of closing membrane with the container such that with only slightly greater material use, opening is possible without tearing the membrane.
- the solution to this task according to the invention is that the closing membrane, starting from the tear-off tab, protrudes freely beyond the outer ring edge of the connecting surface and the distance of the membrane edge to the outer ring edge, starting from the tear-off tab, diminishes constantly to zero on both sides of the tear-off tab up to an angle of at least 45° in relation to a diameter line running in a tear-off direction.
- the distance of the membrane edge to the outer ring edge of the connecting surface diminishes constantly to zero up to an angle of around 90°.
- the solution according to the invention overcomes the possibility of tearing with a low tearing resistance.
- the gradual transition of the tear-off tab allows the necessary resistance of the closing membrane over the sealing edge to be kept very low and leads to an additional material consumption of only around 1%.
- the tear resistance can also be reduced in that the connecting surface between the flange and closing membrane is reduced in the region of the tear-off tab, e.g. by a narrower design. In practice this can be achieved for example by a corresponding step in the flange.
- tear-off force differs greatly over the periphery of the beaker and is characterised in particular by a strong rise at the start of the opening process and on tearing the membrane away when the container is opened. This second rise in tensile force can be ignored as usually the membrane is left on the container at the rear end of the periphery by the consumer.
- the first very strong tension rise is achieved in the moment where the unsealed edge region of the tear-off tab of the lid reaches the so-called collision point on the sealed container edge.
- the common annular connecting surface is arranged concentric to the beaker edge and the outer ring edge of the connecting surface substantially coincides with the beaker edge.
- the common annular connecting surface is arranged on the diameter line running starting from the tear-off tab in the tear-off direction, eccentrically to the annular flange by a shift dimension directed away from the tear-off tab, and the edge of the closing membrane apart from the tear-off tab substantially coincides with the beaker edge.
- the flange or beaker edge can be formed eccentric.
- the lid material can comprise various materials. Typical examples are metal foils coated with plastic on one or both sides. Other lid materials contain or consist of plastics in the form of monofilms or multilayer laminates. Further lid materials can consist of cellulose-containing materials such as cellular glass or paper. Laminates of metal and plastic films can also be used.
- the lid material is usually coated over the full surface with a sealing layer such as a sealing lacquer, a sealable extrusion layer or a sealing film, wherein the sealing layer is arranged on the side facing the inside on the finished packaging, i.e. facing towards the container interior.
- a sealing layer such as a sealing lacquer, a sealable extrusion layer or a sealing film
- the containers are usually formed from plastic by deep-drawing or injection-moulding. Suitable containers can also be made by deep-drawing of lacquered or extrusion-coated films of metal or of metal/plastic laminates.
- FIG. 1 a section through a container with flange and closing membrane sealed against the flange;
- FIG. 2 a view onto the rear of the flange of the container in FIG. 1 in view direction Y, with a closing membrane sealed against the flange in a first manner;
- FIG. 3 a view onto the rear of the flange of the container in FIG. 1 in view direction Y, with a closing membrane sealed against the flange in a second manner.
- a container 10 shown in FIG. 1 in the form of a beaker of plastic to receive yoghurt, for example, has a base 12 and protruding from this a side wall 14 delimiting a filling product volume.
- the side wall 14 extends upward from the base 12 , in the example shown with an outwardly directed angle of incline, and at its end remote from the base transforms into a horizontally outwardly projecting annular flange 16 .
- the transition of the side wall 14 into the annular flange 16 delimits a container opening 18 .
- the free end of the flange 16 forms a container edge 20 .
- a film-like board or closing membrane 22 Sealed to the annular flange 16 is a film-like board or closing membrane 22 which is peelable from the flange 16 and tightly seals the container opening 18 .
- the seal is achieved with a sealing tool with an annular or full-surface die and leads to a common annular connecting surface 28 delimited by an inner ring edge 24 and an outer ring edge 26 between flange 16 and closing membrane 22 .
- the closing membrane 22 which is delimited by a membrane edge 21 at one point has a tear-off tab 23 protruding from the container edge 20 .
- the seal is achieved such that the common annular connecting surface 28 between flange 16 and closing membrane 22 is arranged concentric to the flange 16 , and the outer edge 26 of the annular connecting surface 28 substantially coincides with the beaker edge 20 .
- the closing membrane protrudes beyond the outer ring edge 26 of the annular connecting surface 28 and hence also beyond the beaker edge 20 , wherein the distance between the edge 21 of the closing membrane 22 and the beaker edge 20 diminishes constantly to zero on both sides of the tear-off tab 23 , over a first flange half up to an angle of 90° on both sides to a diameter line defining a tear-off direction x. Over the next second flange half, the membrane edge 21 runs coincident with the beaker edge 20 or the outer ring edge 26 of the annular connecting surface 28 . To guarantee peeling of the closing membrane 22 without risk of tearing, the membrane edge 21 should protrude beyond the beaker edge 20 up to at least an angle of around 45° on both sides.
- the seal is achieved so that the common annular connecting surface 28 between flange 16 and closing membrane 22 is arranged eccentrically to the annular flange 16 on the diameter line running from the tear-off tab 23 in the tear-off direction x, by a shift dimension a directed away from the tear-off tab 23 , and the edge 21 of the closing membrane 22 , apart from the tear-off tab 23 , substantially coincides with the beaker edge 20 .
- the closing membrane 22 which is coincident with the beaker edge 20 protrudes beyond the outer ring edge 26 of the annular connecting surface 28 , wherein the distance between the edge 21 of the closing membrane 22 and the outer ring edge 26 of the annular connecting surface 28 diminishes constantly to zero on both sides of the tear-off tab 23 , over the first flange half up to an angle of 90° on both sides to the diameter line defining the tear-off direction x.
- the membrane edge 21 runs substantially coincident with the beaker edge 20 or the outer ring edge 26 of the annular connecting surface 28 .
- the membrane edge 21 in this variant too should protrude beyond the outer ring edge 26 of the annular connecting surface 28 up to at least an angle of around 45° on both sides.
- the closing membranes shown in the drawing have a circular round form corresponding to beakers with a circular round opening.
- the invention is not however restricted to these examples but comprises also other geometric container openings and lid shapes such as e.g. oval and polygonal shapes.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
- Packages (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10405050A EP2364925A1 (de) | 2010-03-10 | 2010-03-10 | Behälter mit Verschlussmembran |
EP10405050.5 | 2010-03-10 | ||
PCT/EP2011/000985 WO2011110297A1 (de) | 2010-03-10 | 2011-03-01 | Behälter mit verschlussmembran |
Publications (1)
Publication Number | Publication Date |
---|---|
US20120318801A1 true US20120318801A1 (en) | 2012-12-20 |
Family
ID=42288627
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/581,375 Abandoned US20120318801A1 (en) | 2010-03-10 | 2011-03-01 | Container with closing membrane |
Country Status (3)
Country | Link |
---|---|
US (1) | US20120318801A1 (de) |
EP (2) | EP2364925A1 (de) |
WO (1) | WO2011110297A1 (de) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160145026A1 (en) * | 2013-07-01 | 2016-05-26 | Suntory Beverage & Food Limited | Container |
US20160368686A1 (en) * | 2013-07-01 | 2016-12-22 | Suntory Beverage & Food Limited | Container |
US20160368688A1 (en) * | 2013-07-01 | 2016-12-22 | Suntory Beverage & Food Limited | Container |
US20160368651A1 (en) * | 2013-07-01 | 2016-12-22 | Suntory Beverage & Food Limited | Container |
US20160368687A1 (en) * | 2013-07-01 | 2016-12-22 | Suntory Beverage & Food Limited | Seal head and container sealed with using the seal head |
US20160368685A1 (en) * | 2013-07-01 | 2016-12-22 | Suntory Beverage & Food Limited | Container and seal bar |
US10407210B2 (en) * | 2015-02-03 | 2019-09-10 | Compagnie Gervais Danone | Plastic cup with a thin outer sleeve and food product pack comprising such cups |
US20200346414A1 (en) * | 2017-12-29 | 2020-11-05 | Compagnie Gervais Danone | Sealing method using a thin flexible lid to hermetically close a wide opening, delimited by an inner flange, of a container |
US20210161327A1 (en) * | 2018-04-12 | 2021-06-03 | Sarong Societa' Per Azioni | Package |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3108708A (en) * | 1959-11-10 | 1963-10-29 | Plastomatic Corp | Sealed plastic containers |
US3202271A (en) * | 1962-12-11 | 1965-08-24 | Quaker Oats Co | Easy opening container |
US4605142A (en) * | 1984-07-17 | 1986-08-12 | Toyo Seikan Kaisha, Ltd. | Synthetic resin vessel and heat sealed lid |
US5688544A (en) * | 1995-04-18 | 1997-11-18 | Kraft Foods, Inc. | Easy opening ventable closure for sealed particulate product package |
US20030042259A1 (en) * | 2001-08-31 | 2003-03-06 | Porter James A. | Package having cup with beveled sealing flange |
US20050077297A1 (en) * | 2003-10-09 | 2005-04-14 | Sonoco Development, Inc. | Container with easily removable membrane lid |
US20110155734A1 (en) * | 2008-06-27 | 2011-06-30 | Constantia Teich Gmbh | Lid for closing a cup |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2659583B2 (ja) * | 1989-03-03 | 1997-09-30 | 住友ベークライト株式会社 | 易開封性密封容器 |
US5613617A (en) * | 1994-09-27 | 1997-03-25 | Da Vitoria Lobo; Luis J. | Sealed container that is easily opened and mass-produced |
US5882749A (en) * | 1995-06-08 | 1999-03-16 | Pechiney Recherche | Easy-opening reclosable package |
DE10252499A1 (de) * | 2002-11-08 | 2004-05-27 | Sigismund Laskowski | Plastisch oder elastisch verformbare Einweg-Verschließmembrane oder dergleichen mit mindestens einer Zusatzfunktion sowie ihr Herstellungsverfahren |
JP4891648B2 (ja) * | 2006-04-28 | 2012-03-07 | 株式会社ジェイ・エム・エス | 包装容器 |
WO2008068326A1 (de) | 2006-12-06 | 2008-06-12 | Impress Metal Packaging Sa | Schaelfester und reissfester verschlussdeckel mit deckelring |
EP2125596B1 (de) | 2007-03-23 | 2013-09-18 | Terex Cranes Germany GmbH | Fahrzeugkran mit einem unterwagen und einem oberwagen |
-
2010
- 2010-03-10 EP EP10405050A patent/EP2364925A1/de not_active Withdrawn
-
2011
- 2011-03-01 US US13/581,375 patent/US20120318801A1/en not_active Abandoned
- 2011-03-01 EP EP11706757A patent/EP2544961A1/de not_active Withdrawn
- 2011-03-01 WO PCT/EP2011/000985 patent/WO2011110297A1/de active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3108708A (en) * | 1959-11-10 | 1963-10-29 | Plastomatic Corp | Sealed plastic containers |
US3202271A (en) * | 1962-12-11 | 1965-08-24 | Quaker Oats Co | Easy opening container |
US4605142A (en) * | 1984-07-17 | 1986-08-12 | Toyo Seikan Kaisha, Ltd. | Synthetic resin vessel and heat sealed lid |
US5688544A (en) * | 1995-04-18 | 1997-11-18 | Kraft Foods, Inc. | Easy opening ventable closure for sealed particulate product package |
US20030042259A1 (en) * | 2001-08-31 | 2003-03-06 | Porter James A. | Package having cup with beveled sealing flange |
US20050077297A1 (en) * | 2003-10-09 | 2005-04-14 | Sonoco Development, Inc. | Container with easily removable membrane lid |
US20110155734A1 (en) * | 2008-06-27 | 2011-06-30 | Constantia Teich Gmbh | Lid for closing a cup |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20160145026A1 (en) * | 2013-07-01 | 2016-05-26 | Suntory Beverage & Food Limited | Container |
US20160368686A1 (en) * | 2013-07-01 | 2016-12-22 | Suntory Beverage & Food Limited | Container |
US20160368688A1 (en) * | 2013-07-01 | 2016-12-22 | Suntory Beverage & Food Limited | Container |
US20160368651A1 (en) * | 2013-07-01 | 2016-12-22 | Suntory Beverage & Food Limited | Container |
US20160368687A1 (en) * | 2013-07-01 | 2016-12-22 | Suntory Beverage & Food Limited | Seal head and container sealed with using the seal head |
US20160368685A1 (en) * | 2013-07-01 | 2016-12-22 | Suntory Beverage & Food Limited | Container and seal bar |
US9902544B2 (en) * | 2013-07-01 | 2018-02-27 | Suntory Beverage & Food Limited | Container and seal bar |
US9902546B2 (en) * | 2013-07-01 | 2018-02-27 | Suntory Beverage & Food Limited | Container |
US9902547B2 (en) * | 2013-07-01 | 2018-02-27 | Suntory Beverage & Food Limited | Container |
US9902545B2 (en) * | 2013-07-01 | 2018-02-27 | Suntory Beverage & Food Limited | Seal head and container sealed with using the seal head |
US10093471B2 (en) * | 2013-07-01 | 2018-10-09 | Suntory Beverage & Food Limited | Container |
US10106288B2 (en) * | 2013-07-01 | 2018-10-23 | Suntory Beverage & Food Limited | Container |
US10407210B2 (en) * | 2015-02-03 | 2019-09-10 | Compagnie Gervais Danone | Plastic cup with a thin outer sleeve and food product pack comprising such cups |
US20200346414A1 (en) * | 2017-12-29 | 2020-11-05 | Compagnie Gervais Danone | Sealing method using a thin flexible lid to hermetically close a wide opening, delimited by an inner flange, of a container |
US20210161327A1 (en) * | 2018-04-12 | 2021-06-03 | Sarong Societa' Per Azioni | Package |
Also Published As
Publication number | Publication date |
---|---|
EP2544961A1 (de) | 2013-01-16 |
EP2364925A1 (de) | 2011-09-14 |
WO2011110297A1 (de) | 2011-09-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: AMCOR FLEXIBLES KREUZLINGEN LTD., SWITZERLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:WOLTERS, DETLEF;REEL/FRAME:028858/0850 Effective date: 20120803 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |