US3776450A - Foil for closing easily openable packages - Google Patents

Foil for closing easily openable packages Download PDF

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Publication number
US3776450A
US3776450A US00226113A US3776450DA US3776450A US 3776450 A US3776450 A US 3776450A US 00226113 A US00226113 A US 00226113A US 3776450D A US3776450D A US 3776450DA US 3776450 A US3776450 A US 3776450A
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United States
Prior art keywords
layer
foil
weakened
exterior layer
line
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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.)
Expired - Lifetime
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US00226113A
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English (en)
Inventor
O Christensson
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.)
Christenssons Maskiner and Patenter AB
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Christenssons Maskiner and Patenter AB
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/043—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
    • 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
    • B65D51/00—Closures not otherwise provided for
    • B65D51/18—Arrangements of closures with protective outer cap-like covers or of two or more co-operating closures
    • B65D51/20—Caps, lids, or covers co-operating with an inner closure arranged to be opened by piercing, cutting, or tearing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
    • 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
    • B65D77/2044—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure
    • B65D77/2048—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure whereby part of the container or cover has been weakened, e.g. perforated or precut
    • B65D77/2056—Means for opening the cover other than, or in addition to, a pull tab by peeling or tearing the cover from the container whereby a layer of the container or cover fails, e.g. cohesive failure whereby part of the container or cover has been weakened, e.g. perforated or precut the cover being weakened
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2311/00—Metals, their alloys or their compounds
    • B32B2311/24—Aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2435/00—Closures, end caps, stoppers
    • B32B2435/02—Closures, end caps, stoppers for containers
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0006—Upper closure
    • B65D2251/0018—Upper closure of the 43-type
    • 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
    • B65D2251/00—Details relating to container closures
    • B65D2251/0003—Two or more closures
    • B65D2251/0068—Lower closure
    • B65D2251/0093—Membrane
    • 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
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2041—Pull tabs
    • B65D2577/205—Pull tabs integral with the closure
    • 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
    • B65D2577/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks, bags
    • B65D2577/10—Container closures formed after filling
    • B65D2577/20—Container closures formed after filling by applying separate lids or covers
    • B65D2577/2075—Lines of weakness or apertures
    • B65D2577/2091—Lines of weakness or apertures in cover

Definitions

  • ABSTRACT A closing foil for easily openable packages of the type wherein the foil is to be laid over the upwardly open mouth of the package and adhered to the mouth of the package.
  • the foil comprises two layers evenly contacting each other, the inner layer being provided with an arrow point-like tear line at the beginning of the tearing area, whereas the exterior layer is provided with tear lines along the continuation of the tearing area, as well as with a tongue for initiating the tearing.
  • One end of the arrow point-like cut ends at a cut in the exterior layer which extends about the exterior layer inwardly of the periphery of exterior layer.
  • a foil which is laid over the upwardly open mouth of the package and which is welded, wax soldered or in any other suitable way attached at its edge to the upper edge of the mouth of the package.
  • the attachment can take place by sealing the upper edge proper of the package to the foil and/or by sealing an edge part of the interior and/or exterior side of the package to the foil.
  • the edge of the package and the foil are provided with a protection border.
  • Such a foil, used for closing a package must be easily operable.
  • the present invention is based upon the idea that the foil should be of such a character, that one may easily separate the foil by pulling on a tearing tongue. Simultaneously the foil must be of such a character, that it is completely tight, and thereby preferably also liquid tight or vacuum tight, respectively, because packages of this type should be possible to use for packing material under vacuum.
  • the foil being composed by two layers evenly contacting each other, the layer turned onto the interior of the package being provided with an arrow point-like cut at the beginning of the tear area, whereas the layer turned onto the exterior of the package is provided with a cut or cuts along the continuation of the tear, and the two layers are tightly attached to each other in such a way, that the cuts existing in each of said layers is tightly covered by parts of the other layer without any such cuts.
  • FIG. 1 shows a section through a package which is closable with a foil according to the invention
  • FIG. 2 shows the interior layer of the foil
  • FIG. 3 shows the upper layer of the foil
  • FIG. 4 shows the foil after the two layers have been connected, emphasizing the places, where tight connection is provided between the layers
  • FIG. 5 shows the foil seen from the side, however with a thickness of the different layers which is greatly exagerated.
  • the sealing foil which may be made in accordance with the present invention, comprises a flat part 13 and parts 14 folded upwardly against the uppermost edge parts of the linear, the foil being welded to said parts, so that a vacuum tight connection is created.
  • a border 15 is attached over this edge.
  • the border should suitably, in order of giving a better stability, be provided with an inwardly as well as outwardly directed flange 16 and 17, respectively.
  • a package of this type is intended to be opened by removing the flat part 13 of the sealing foil, which was regarded earlier to be possible by cutting the foil by means of a knife along the guide line formed by the inner edge of the border 16.
  • a re-closing lid 18 is mountable over the border.
  • the thicknesses of the different parts of the package in FIG. 1 have been shown exaggerated, and to some extent such parts have been shown at smaller distance from each other, said parts in reality being positioned tightly against each other.
  • the package of this type is known, and therefore does not form part of the present invention.
  • FIG. 3 shows the upper or exterior layer in a foil of two layers, as a chosen form of execution of the present invention.
  • This layer is punched or cut through or at least strongly perforated or weakened along a line 19, which preferably runs all around the layer at such a distance from its edge 20, that the line 19 will coincide with or be situated only slightly inside of the inner edge of the flange 16 on the border 15.
  • a grip tongue for tearing up the foil is cut out at 21, and this grip tongue at its one end continues into the punched cutting line 19, e.g. as shown at 22, whereas the grip tongue on its other side approaches a cut 23, which has for its purpose to direct the tearing line at the first comer of the foil during tearing in a way which will be evident from the following.
  • This layer of the foil has an extension beyond the mouth of package 10, such that outside of the cutting line 19 there is an edge part 20, which covers the inwardly directed flange 16 on the border and also is sufficient for being folded up in the form of the liner edge 14 to be welded to the upper edge part of the liner 11.
  • this layer of the foil is cut in inclined direction in the comers, as shown at 25.
  • FIG. 2 shows the interior or lower layer part of the foil.
  • this foil is of somewhat less extent than the layer shown in FIG. 3. Its extent, however, must be such that the layer 26 according to FIG. 2 extends in all places outside of the tear line 19, when the two layers are combined in centered position.
  • a cut line 27 which preferably has the pointed angular form, indicated in the drawing figure, but also other forms may be used, if they are of such a kind that after combining the layers in the way, shown below in connection with FIGS. 4 and 5, the tearing up of the tearing tongue 21 will cause a strip of the width b to be formed and to be released from the foil.
  • either one of the two layers contains the required tearing devices in the form of cutter lines 19 or 27, respectively, but the cutter line in each layer of the foil is covered by a non-cut-through piece of the other layer in the foil, and on both sides of the cutter line the two layers are welded together, so that they will in common be completely tight.
  • the foil When distributing such a package, the foil may easily be damaged, but this is prevented by putting on a reclosing lid 18, FIG. 1.
  • a reclosing lid 18, FIG. 1 When opening the package one has therefore first to remove the re-closing lid 18 and thereafter to catch the tearing tongue 21, which is drawn straight upwardly.
  • the cutter line about the tearing tongue initially serves as a tearing device, and at the tearing therefore the corresponding part of the interior layer follows, as soon as one has during the tearing, got
  • the layers should be vacuum tight, which means that they shall not only be air tight or gas tight, when there is the same pressure on each side of them, but they should also be tight in this respect, when there is a differenc in pressure of up to 1 atmosphere.
  • the layers should be weldable to each other at a temperature, which is not so high, that the packed material is damaged by dry distillation or any similar happening.
  • the material in the foil should be weak and soft, so that it may easily be re-sized into good connection to the uppermost edge of the inner side of the liner, with which it has to be connected vacuum tightly by welding.
  • the material shall have a tendency when being torn to release a rather evenly broad strip, so that the two edges of the material immediately after the end of the cut 23 will not flow together, and the tearing of the continuation thereof be made impossible.
  • the product may further be of such a kind, that it may be damaged when subjected to light, and in such cases consequently the foil should be light tight.
  • the basic material in each of the two layers is an aluminium foil, which suitably may have a thickness of 0.12 to 0.15 mm.
  • This material is light tight and vacuum tight, and it has the above mentioned property preferably when torn to follow a well guided path.
  • Aluminium foil cannot be welded in other ways than by point welding by means of high frequency arc welding. Point welding will give leakages between the separate welding points, and even if one could solve the problem of providing a tight welding mutually between the two layers before they are applied as a cover over a package, it will nevertheless be impossible to weld the aluminium foil directly to the linear in the package without the temperature being so high, that the packed material will be subjected to detrimental changes.
  • the upper or exterior layer of the foil therefore is made with the aluminium foil on its upper side and the poly-ethlyene on its lower side, whereas the interior or lower layer is made in the opposite way, which means that the aluminium foil is placed on its lower side and the poly-ethylene on its upper side.
  • the two polyethylene covers therefore will be in contact with each other, and they are weldable without any difficulty at a temperature, which does not destroy the packed material. It is true, that the two layers are not welded together at a time, when the packed material is in heat transfer proximity of the weld joint, but the outer or upper layer will nevertheless be welded to the liner in the package along the extending edge part 24, and thereby the temperature must not be so high, that the material in the interior of the package is damaged.
  • the upper or outer layer will on its upper side comprise aluminium.
  • Aluminium is to a rather small extent receptive for writing or printing, and as it is desirable as a rule on just this upper side to attach a statement about the contents.
  • the aluminium foil in the upper layer should further on its upper side be covered by a skin of a material, which is receptible to writing or print, but which also may easily be rolled together with aluminium, preferably in the same rolling procedure during which the foil was provided on its lower side with a layer of poly-ethylene.
  • a poly-ester has proved to be especially suitable.
  • the cover of poly-ethylene as well as the cover of poly-ester should be extremely thin and preferably essentially less than the aluminium foil.
  • a closing foil for forming an openable closure over the mouth of a package of the type wherein a foil is laid over the open mouth of the package and adhered to the package said closing foil comprising two contacting layers, the interior layer being formed with a weakened tear line of arrow-pointJike configuration at the beginning of the tear area, the exterior layer being formed with weakened tear lines extending into said tear area and at least one continuing weakened tear line extending around but spaced inwardly from the exterior layer to define one edge of the torn material to be removed, said exterior layer being also the periphery of formed with a graspable tongue for initiating the tearing, said tongue being defined by cut lines which merge with said weakened lines in the exterior layer, at least one end of said narrow-point-like tear line in the interior layer ending at the continuing weakened line in the exterior layer, the two layers being sealingly adhered to each other such that weakened tear lines in each of said layers are sealingly covered by and adhered to nonweakened parts of the other layer, the part of the exterior layer forming said tongue not
  • a closing foil as claimed in claim 1 wherein both ends of the arrow-point-like tear lines in the interior layer end at weakened tear lines in the exterior layer.
  • each layer comprises metal foil and a coating of weldable plastic, the plastic coatings of the two metal foils facing each other.
  • a closing foil as claimed in claim 5 wherein said continuing weakened tear line in the exterior layer extends in a closed configuration located inwardly from the periphery of the exterior layer so as to form a completely removable portion, and wherein said interior layer is of such size and configuration as to extend slightly beyond said continuing weakened line but short of the outer periphery of the exterior layer, and wherein said tongue is formed by a cut portion in the exterior layer, the end of one edge of the tongue merging with said continuing weakened line and the other edge of the tongue terminating in a weakened line spaced inwardly from but generally parallel to said continuing weakened line so as to define therebetween the width of at least the beginning of a strip to be torn from both layers, the arrow-point-like weakened tear line of the interior layer ending at one of its ends at said continuing weakened line and at its other end at a weakened line merging with the other edge of said tongue, the two layers being tightly adhered along anarrow path extending slightly to each side of said continuing weakened line and in a broader area

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
US00226113A 1971-03-01 1972-02-14 Foil for closing easily openable packages Expired - Lifetime US3776450A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE02541/71A SE350945B (it) 1971-03-01 1971-03-01

Publications (1)

Publication Number Publication Date
US3776450A true US3776450A (en) 1973-12-04

Family

ID=20260146

Family Applications (1)

Application Number Title Priority Date Filing Date
US00226113A Expired - Lifetime US3776450A (en) 1971-03-01 1972-02-14 Foil for closing easily openable packages

Country Status (13)

Country Link
US (1) US3776450A (it)
JP (1) JPS5330077B1 (it)
CA (1) CA954052A (it)
CH (1) CH532508A (it)
DK (1) DK126983B (it)
FI (1) FI56350C (it)
FR (1) FR2127891A5 (it)
GB (1) GB1363982A (it)
IT (1) IT949776B (it)
NL (1) NL7202498A (it)
NO (1) NO131065C (it)
SE (1) SE350945B (it)
ZA (1) ZA721166B (it)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2435406A1 (fr) * 1978-08-08 1980-04-04 Boise Cascade Corp Element obturateur rapporte pour ouverture partielle de la partie superieure de recipients composites ou analogues
US4461420A (en) * 1982-03-05 1984-07-24 Cod Inter Techniques Sa Ventable package cover
US4491224A (en) * 1982-03-05 1985-01-01 C O D Inter Techniques Sa Weldable tear-off capping film for sealing packages
EP3085636A1 (en) * 2015-04-20 2016-10-26 N.V. Nutricia Sealing foil with tear line
WO2018009136A1 (en) * 2016-07-06 2018-01-11 Å&R Carton Lund Aktiebolag Push-and-pull sealing disc for packaging container
WO2018009134A1 (en) * 2016-07-08 2018-01-11 Å&R Carton Lund Aktiebolag Sealing disc for a packaging container, a packaging container comprising the sealing disc, and a method for producing the sealing disc

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH593180A5 (it) * 1976-02-11 1977-11-30 Sandherr Max Ag
FR2503036A1 (fr) * 1981-04-01 1982-10-08 Erca Bande composite a couvercles pour recipients thermoplastiques et procede, dispositif et installation de fabrication d'une telle bande composite
SE462034B (sv) * 1983-05-19 1990-04-30 Akerlund & Rausing Licens Ab Oeppningsanordning foer foerpackningar
SE469793B (sv) * 1988-02-16 1993-09-13 Akerlund & Rausing Ab Förslutningsanordning till förpackningsbehållare
DE3901517A1 (de) * 1989-01-19 1990-08-02 Schmalbach Lubeca Leicht zu oeffnende verpackung fuer giessbare fuellgueter
FR2807402B1 (fr) * 2000-04-07 2002-10-31 Alsacienne Aluminium Opercule pour recipient a ouverture par pelage, comprenant une languette de prehension delimitee par une decoupe

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US526435A (en) * 1894-09-25 Means for opening metal receptacles
US1498218A (en) * 1918-05-13 1924-06-17 Weis Fibre Container Corp Metal-bound fiber container
US2125609A (en) * 1937-04-14 1938-08-02 American Seal Kap Corp Milk bottle cap
US2276577A (en) * 1939-09-13 1942-03-17 Dixie Vortex Co Paper container
US2354043A (en) * 1938-06-01 1944-07-18 Netalova Anna Bottle closure
US2583211A (en) * 1949-01-26 1952-01-22 Eskimo Pie Corp Container for liquids
US2719663A (en) * 1949-08-03 1955-10-04 Jagenberg Werke Ag Container with rip-open flap
US3298505A (en) * 1965-02-12 1967-01-17 Brown Co Laminated closure for food trays and trays closed with same
US3391852A (en) * 1965-10-23 1968-07-09 Reynolds Metals Co Container construction and parts and blanks therefor or the like
US3432087A (en) * 1966-09-01 1969-03-11 Alfred P Costello Package valve
US3434651A (en) * 1967-05-12 1969-03-25 Continental Can Co Mesh reinforced closure for full opening can

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US526435A (en) * 1894-09-25 Means for opening metal receptacles
US1498218A (en) * 1918-05-13 1924-06-17 Weis Fibre Container Corp Metal-bound fiber container
US2125609A (en) * 1937-04-14 1938-08-02 American Seal Kap Corp Milk bottle cap
US2354043A (en) * 1938-06-01 1944-07-18 Netalova Anna Bottle closure
US2276577A (en) * 1939-09-13 1942-03-17 Dixie Vortex Co Paper container
US2583211A (en) * 1949-01-26 1952-01-22 Eskimo Pie Corp Container for liquids
US2719663A (en) * 1949-08-03 1955-10-04 Jagenberg Werke Ag Container with rip-open flap
US3298505A (en) * 1965-02-12 1967-01-17 Brown Co Laminated closure for food trays and trays closed with same
US3391852A (en) * 1965-10-23 1968-07-09 Reynolds Metals Co Container construction and parts and blanks therefor or the like
US3432087A (en) * 1966-09-01 1969-03-11 Alfred P Costello Package valve
US3434651A (en) * 1967-05-12 1969-03-25 Continental Can Co Mesh reinforced closure for full opening can

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2435406A1 (fr) * 1978-08-08 1980-04-04 Boise Cascade Corp Element obturateur rapporte pour ouverture partielle de la partie superieure de recipients composites ou analogues
US4461420A (en) * 1982-03-05 1984-07-24 Cod Inter Techniques Sa Ventable package cover
US4491224A (en) * 1982-03-05 1985-01-01 C O D Inter Techniques Sa Weldable tear-off capping film for sealing packages
EP3085636A1 (en) * 2015-04-20 2016-10-26 N.V. Nutricia Sealing foil with tear line
EP3085636B1 (en) 2015-04-20 2019-06-19 N.V. Nutricia Sealing foil with tear line
EP3578479A1 (en) * 2015-04-20 2019-12-11 N.V. Nutricia Sealing foil with tear line
EP3578479B1 (en) 2015-04-20 2023-07-05 N.V. Nutricia Sealing foil with tear line
WO2018009136A1 (en) * 2016-07-06 2018-01-11 Å&R Carton Lund Aktiebolag Push-and-pull sealing disc for packaging container
US11186416B2 (en) 2016-07-06 2021-11-30 Ar Packaging Systems Ab Push-and-pull sealing disc for packaging container
WO2018009134A1 (en) * 2016-07-08 2018-01-11 Å&R Carton Lund Aktiebolag Sealing disc for a packaging container, a packaging container comprising the sealing disc, and a method for producing the sealing disc

Also Published As

Publication number Publication date
SE350945B (it) 1972-11-13
FI56350C (fi) 1980-01-10
FI56350B (fi) 1979-09-28
NL7202498A (it) 1972-09-05
NO131065C (it) 1975-04-02
GB1363982A (en) 1974-08-21
JPS5330077B1 (it) 1978-08-24
FR2127891A5 (it) 1972-10-13
ZA721166B (en) 1972-11-29
CA954052A (en) 1974-09-03
IT949776B (it) 1973-06-11
DK126983B (da) 1973-09-10
NO131065B (it) 1974-12-23
CH532508A (de) 1973-01-15

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