US3889844A - Can closure - Google Patents

Can closure Download PDF

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Publication number
US3889844A
US3889844A US393001A US39300173A US3889844A US 3889844 A US3889844 A US 3889844A US 393001 A US393001 A US 393001A US 39300173 A US39300173 A US 39300173A US 3889844 A US3889844 A US 3889844A
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US
United States
Prior art keywords
pour hole
hole
wall
area
tape
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.)
Expired - Lifetime
Application number
US393001A
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English (en)
Inventor
Harris W Viker
William E Kropp
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Priority to US393001A priority Critical patent/US3889844A/en
Priority to DK444174A priority patent/DK444174A/da
Priority to NL7411089A priority patent/NL7411089A/xx
Priority to JP49099438A priority patent/JPS5050184A/ja
Priority to GB3790174A priority patent/GB1477862A/en
Priority to DE2441490A priority patent/DE2441490A1/de
Priority to AU72776/74A priority patent/AU472220B2/en
Priority to FR7429489A priority patent/FR2242302B3/fr
Priority to BR7245/74A priority patent/BR7407245D0/pt
Priority to US05/540,980 priority patent/US3964415A/en
Application granted granted Critical
Publication of US3889844A publication Critical patent/US3889844A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/383—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures scoring lines, tear strips or pulling 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/50—Non-integral frangible members applied to, or inserted in, preformed openings, e.g. tearable strips or plastic plugs
    • B65D17/501—Flexible tape or foil-like material
    • B65D17/505—Flexible tape or foil-like material applied to the external and internal part of the container wall
    • 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
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/50—Non-integral frangible members applied to, or inserted in, preformed openings, e.g. tearable strips or plastic plugs
    • B65D17/506—Rigid or semi-rigid members, e.g. plugs
    • 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
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/001—Action for opening container
    • B65D2517/0013—Action for opening container pull-out tear panel, e.g. by means of a tear-tab
    • 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
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/0058—Other details of container end panel
    • B65D2517/0068—Ribs or projections in container end panel
    • B65D2517/007—Ribs or projections in container end panel located within tear-out/push-in panel
    • 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
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/0001—Details
    • B65D2517/0091—Means for venting upon initial opening
    • B65D2517/0094—Means for venting upon initial opening formed as a separate opening
    • 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
    • B65D2517/00—Containers specially constructed to be opened by cutting, piercing or tearing of wall portions, e.g. preserving cans or tins
    • B65D2517/50—Non-integral frangible members applied to, or inserted in, a preformed opening
    • B65D2517/5072—Details of hand grip, tear- or lift-tab
    • B65D2517/5083—Details of hand grip, tear- or lift-tab with means facilitating initial lifting of tape, e.g. lift or pull-tabs

Definitions

  • This invention relates to liquid-containing cans of the type in which a pour hole is covered by a removable pressure-sensitive adhesive tape tab.
  • the invention also relates to end walls useful for the manufacture of such cans and to methods of preparing such end walls.
  • unpressurized cans containing tomato juice and similar liquids can be provided with a convenient means for opening by pre-punching a hole in one end wall and applying a pressure-sensitive adhesive tape, tab over the hole.
  • a pressure-sensitive adhesive tape, tab over the hole.
  • the user grasps the free end of the tape tab and pulls the closure off, exposing the hole in the end wall to permit pouring out the contents of the can.
  • Easy-open containers of this type are shown in U.S. Pat. No. 3,389,827, the disclosure of which is incorporated herein by reference.
  • the present invention provides a closed liquid-filled hollow container which is economical to manufacture, utilizes the simple and easily operated pressuresensitive adhesive tab of the type shown in US. Pat. No. 3,389,827, can be fabricated entirely from steel,
  • the area of the can wall immediately circumjacent to the pour hole is so contoured that it tapers outward, and the hole is thus located in a plane displaced outward with respect to the rest of the end wall.
  • the portion of the tape covering the hole bulges outward, as in previous constructions.
  • the forces acting on the tape tend to place the adhesive in shear (i.e., the forces are exerted parallel to the tape backing) instead of in peel (i.e., where the forces are exerted at right angles to the tape backing). Since the shear force required to loosen the tape greatly exceeds the peel force required to loosen it, the container can be subjected to substantially higher internal pressure without seal failure than is possible when the hole is located in the same plane as the remainder of the wall.
  • a subassembly comprising a preformed circular end piece which is a modification of the conventional type, having a depressed center end wall with a died-out pour hole and a circumferential lip for clamping over and sealing to one end of tubular metal can body.
  • the modification is conveniently made by applying to the depressed center portion of the end piece a strip of normally tacky and pressure-sensitive adhesive tape so that it overlies the pour hole and is sealed to the circumjacent surface, supporting the taped side of the end piece in an area adjacent to but spaced slightly outward from the pour hole, and firmly gripping the end piece in this area.
  • the punch normally will have a head with a circular cross section in a plane taken at right angles to the axis of the punch.
  • the distal end of the head then has a diameter smaller than that of the pour hole and the remainder of the head has a diameter larger than that of the pour hole; the head may be beveled, tapered, chamfered, or curved in order to achieve this shape.
  • the head As the head is forced into the pour hole, it imparts an open-topped outwardly tapered configuration to the taped side of the end piece, simultaneously stretching the tape and leaving it firmly adhered.
  • FIG. 1 is a perspective view of a can made in accordance with the present invention
  • FIG. 2 is a cross section of the end wall of the can shown in FIG. 1, taken along section line 2-2 and looking in the direction of the arrows;
  • FIG. 3 is a cross sectional view of a forming press suitable for imparting a frusto-conical configuration to the end wall ofa can in the area immediately circumjacent to the pour hole.
  • the water is heated to the desired test temperature, the desired air pressure supplied to the base of the chamber, and an electric timer mounted above each test lid started; the timer is connected to a pressure-activated switch, which in turn is connected to the lid. The switch is closed, and the timer thereby stopped, when the tape closure is sufficiently loosened to permit escape of the pressure in the chamber, thus marking the end of the test.
  • can comprises generally circular upper end and tubular body 30.
  • End 20 comprises a circumferential lip 21, having a resin coating 22 at its inner aspect; lip 21 fits down over the upper end of can body 30 and is crimped in position, resin 22 sealing the joint against leakage.
  • the central portion of end wall 23 is depressed slightly with respect to lip 21, a common arrangement in can manufacture.
  • pour hole 25 Located in end wall 23 adjacent lip 21 is pour hole 25, which, if circular, typically has a diameter of 10-15 mm; slightly radially inward therefrom is located vent hole 24, which typically has a diameter of 1 /2 3 mm.
  • end wall 23 is so contoured that it tapers upward, leaving pour hole situated in a plane spaced slightly (e.g., 2-4 mm) above the remainder of end wall 23.
  • pour hole 25 is preferably located in a plane which is slightly lower than the upper portion of lip 21.
  • the difference in elevation between the pour hole 25 and can end wall 23 in the formed end 20 should usually be, for a 12.7- mm pour hole, on the order of 2 /2 3 mm, and the angle of the sides to the base should generally exceed 20 to insure placing the tape closure in a shear mode adequate to resist failure under anticipated conditions of use.
  • sealing tab 40 Overlying pour hole 25 and vent hole 24 is sealing tab 40, the construction of which is shown best in the crosssectional view of FIG. 2.
  • Tab 40 comprises stretchable backing 41, advantageously formed of a strong oriented synthetic polymeric film which is 25-250 microns thick, although metal foil or reinforced fibrous sheet material can probably be employed in some circumstances. It is important, however, that the backing of the sealing tab be relatively impermeable to water vapor, carbon dioxide and oxygen. Water vapor transmission, for example, should not exceed 1.7-1.8 gms/IOO in /24 hr/mil at 23C. when measured in accordance with ASTM Test E96.
  • Carbon dioxide should have a permeability rate which does not exceed 15-25 cc/l00 in /24 hr/atmosphere at 25C., and oxygen permeability should not exceed about -40% of this figure; see ASTM Test D 1434. It is also important for the film to be capable of elongating lO-200% at break so that the tab can be stretched to conform to the convex area around the pour hole. To insure continued smooth conformance, the stretched backing should not, after withdrawing the stretching force, retract more than 30% of the incremental amount stretched; in fact, a backing which possesses dead stretch (i.e., no retraction) is preferred.
  • Vent hole 24 and pour hole 25 are die-cut from the end wall 23 of an end 20, sealing tab 40 applied thereover, and a protective coating 27 of lacquer or the like applied to protect the raw edges.
  • End 20 is then inverted and placed atop a circular support table 50, the diameter of which is the same as the diameter of end wall 23.
  • a circular support table 50 In the upper surface of table 50 is a generally cylindrical cavity 51, the diameter of which is somewhat greater than the diameter of pour hole 25.
  • Can end 20 is so positioned that pour hole 25 is centered over cavity 51.
  • press head 60 Connected to table 50 by means of supporting member 52 is press head 60, coil springs 53 surrounding member 52 to maintain the press in normally open position.
  • Punch 61 at the lower end of which is chamfered head 62, is seated in press head 60.
  • the location of head 62 may be controlled by the insertion of shims (not shown) between the lower surface of press head 60 and the upper surface of head 62.
  • shims Suspended somewhat below the lower surface of press head 60 is forming ring 63, supported by three guide pins 64, only one of which is shown in the drawing.
  • Guide pin 64 slides in channel 65, spring 66 surrounding the exposed portion of guide pin 64 and holding forming ring 63 a fixed distance beneath the lower surface of press body 60.
  • hole 67 Positioned in axially aligned relationship with respect to punch 61 is hole 67, the diameter of which is slightly greater than the greatest diameter of head 62.
  • press head 60 is lowered, bringing draw ring 63 into snug contact with end wall 23 everywhere except in the portion of end wall 23 immediately circumjacent to pour hole 25.
  • punch head 62 contacts the portion of end wall I 23 which defines pour hole 25 and gradually forces it into a frusto-conical shape, the configuration of which is dictated by the angle, a, of the chamfered portion of head 62.
  • a pour hole which is other than circular, e.g., an elliptical hole which takes the place of both pour hole 25 and vent hole 24.
  • a pour hole which is other than circular, e.g., an elliptical hole which takes the place of both pour hole 25 and vent hole 24.
  • the same principles of tapering the area circumjacent such a hole apply, but the resultant shape is not a frustum in the strict geometric sense.
  • the terms frustum, frustoconical, etc. are intended to be liberally construed so as to embrace such shapes.
  • diameter it is not intended that a circular cross-section is necessarily connoted thereby.
  • pour hole 25 need not be a single large hole but may be a plurality of closely spaced smaller holes. In this event, all the holes should be located in the plane which is spaced farthest from the upper surface of end wall 23.
  • holes which have the shape of a circle or regular polygon are simple and economical, teardrop, oval, or other shapes may be employed. Where the hole is non-circular, however, it is desirable to use tape which has dead stretch, or at least very little elastic memory.
  • EXAMPLE 1 Biaxially oriented polyethylene terephthalate film approximately 90 microns thick was provided on one face with a thin vapor coating of aluminum to impart a metallic appearance. The opposite face was then coated with a thin primer layer of a styrene-butadiene-styrene block copolymer in which each of the two polystyrene blocks had a molecular weight of about 15,000 and the polybutadiene block had a molecular weight of about 70,000. (A suitable copolymer of this type is available from Shell Chemical Company under the registered trademark Kraton 1101.) The coating was then exposed to a corona discharge to bond it firmly to the film backing.
  • a tolu' ene solution containing 100 parts of the same block copolymer and 95 parts of a polyterpene resin containing alpha-pinene and having a ring-and-ball softening point (ASTMM Test E28-58T) of 135C.
  • a polyterpene resin containing alpha-pinene and having a ring-and-ball softening point (ASTMM Test E28-58T) of 135C.
  • the coated solution was then oven dried to leave a pressure-sensitive adhesive coating weighing approximately 6 rngmlcm
  • the sheet material was then wound into roll form, a silicone-coated paper release liner being interposed between adjacent convolutions in the roll.
  • a conventional 68.3-mm diameter depressed-center beverage can end was punched as shown in FIG. 1 so that it had a pour hole approximately 9.5 mm in diameter and a vent hole approximately 1.6 mm in diameter. Over the outer surface of the can end was then applied the tab described in the preceding paragraph, the resulting laminate being subjected to a pressure of approximately 40 kg/cm at 50C. (Adhesion may be further increased by utilizing higher temperatures, higher pressures, or both. For many end uses, however, application may be made at room temperature and pressures as low as 6 kg/cm Over the lower surface of the can lid, in the areas immediately adjacent to the edges of the pour hole and the vent hole, was applied a 25% toluene solution of a protective rubber-resin coating.
  • the solid material consisted of parts of the block copolymer used in the primer coating (described earlier in this example) and parts of a non-oxidizing white hydrocarbon copolymer of 65% mand p-vinyl toluene and 35% alpha-methyl styrene.
  • a suitable hydrocarbon copolymer of this type having an ASTM E28-5 8T ball-and-ring softening point of 92C., is available from Pennsylvania Industrial Chemical Corporation under the registered trademark Piccotex LC.
  • the solvent was evaporated and the taped, edge-sealed can end placed in a 65C. oven for 4 hours to enhance adhesion of the tab; longer times, higher temperatures, or both, improve adhesion still more.
  • the taped lid prepared as just described, was shaped on an apparatus similar to that shown in FIG. 3, as described earlier, so as to impact a frustum-like configuration to the pour hole and the immediately surrounding area.
  • the pour hole opening was enlarged to a diameter of about 11 mm, and the height of the frustum was about 2.2 mm above the remaining area of the can end.
  • the sides of the frustum lay at an angle of about 30 to the remainder of the can lid, the base blending into the can end in a smooth curve.
  • Example 1 Tabulated below are examples showing the effect of several variables on the performance of products made in accordance with the invention. None of these examples included a protective edge sealing coat; otherwise, all are made in substantially the same way as Example 1.
  • PET Biaxially oriented polytli'ylelifi terephthalate film IPP Biaxially oriented isataetie ally pro lene film -Continued Elastomeric film of 23:48:28 acrylonitrile:styrene:butyl acrylate polymer. having a density of 1.07 and a melt index at 200C./21.6 kgf of 8-12 g/mm, per ASTM Test No. 1238. Resin of this type is available from BASF under the trade designation Luran, and film is sold by Richman Chemical Company as Richform ASA.
  • Adhesive based on vinyl acetatezZ-ethylhexyl acrylatezvinyl alcoholzacrylic acid polymer e.g., available from Monsanto under the registered trademark Gelva" MP-276
  • polycarbodiimide Adhesive based on 27:19:51z3 vinyl acetate: ethyl acrylate:2ethylhexyl acrylatezacrylic acid polymer e.g., available from Ashland Chemical Company under the registered trademark Aeroset” 1044
  • IOAIEAIAA 50140110 -Q Y P W Y hot melt adhesives especially those which become acrylatezacrylic acid terpolymer k h h d d k f
  • Polyamide Polyamide resin havinga ball-and-ring softening tac y w en edte an remam tac y some tlm e P 2 1 2f g g g g of gl thereafter, are also useful.
  • Presumably highly elastic at .an cm at- .,an a ore hardness (ASTM Test D 1707431) of 85 thermoset resins could also be employed.
  • the improvement which comprises contouring said area so that the wall uniformly tapers outward and the hole is thus located in a plane displaced outward with respect to the portion of the wall peripherally adjoining said area, the tape being adhered to the'tapered portion of the wall,
  • the container can be subjected to substantially higher internal pressure than is possible when the hole is located in the same plane as the immediately circumjacent area.
  • a subassembly for use in fabricating the can of claim 2, comprising a pre-formed circular end piece having a depressed center end wall and a circumferential lip for clamping over and sealing to one end of an annular metal can body, said end wall having a portion which is displaced upward therefrom, a pour hole being located at the top of the upwardly displaced portion, with a strip of tape protectively covering said pour hole and sealed to the upwardly displaced side of the end wall in the area immediately circumjacent to the pour hole.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Tubes (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
US393001A 1973-08-30 1973-08-30 Can closure Expired - Lifetime US3889844A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US393001A US3889844A (en) 1973-08-30 1973-08-30 Can closure
NL7411089A NL7411089A (nl) 1973-08-30 1974-08-20 Gesloten holle houder, zoals een cilindrisch metalen blik, onderdelen daarvoor en een werk- wijze voor het vervaardigen van zulk een houder.
DK444174A DK444174A (ja) 1973-08-30 1974-08-20
GB3790174A GB1477862A (en) 1973-08-30 1974-08-29 Closed hollow containers
JP49099438A JPS5050184A (ja) 1973-08-30 1974-08-29
DE2441490A DE2441490A1 (de) 1973-08-30 1974-08-29 Buechsenverschluss
AU72776/74A AU472220B2 (en) 1973-08-30 1974-08-29 Can closure
FR7429489A FR2242302B3 (ja) 1973-08-30 1974-08-29
BR7245/74A BR7407245D0 (pt) 1973-08-30 1974-08-30 Processo de fabricar um recipiente oco fechado aperfeicoado subconjunto aperfeicoado para emprego na fabricacao do recipiente e recipiente oco fechado aperfeicoado
US05/540,980 US3964415A (en) 1973-08-30 1975-01-14 Can closure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US393001A US3889844A (en) 1973-08-30 1973-08-30 Can closure

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US05/540,980 Division US3964415A (en) 1973-08-30 1975-01-14 Can closure

Publications (1)

Publication Number Publication Date
US3889844A true US3889844A (en) 1975-06-17

Family

ID=23552893

Family Applications (1)

Application Number Title Priority Date Filing Date
US393001A Expired - Lifetime US3889844A (en) 1973-08-30 1973-08-30 Can closure

Country Status (9)

Country Link
US (1) US3889844A (ja)
JP (1) JPS5050184A (ja)
AU (1) AU472220B2 (ja)
BR (1) BR7407245D0 (ja)
DE (1) DE2441490A1 (ja)
DK (1) DK444174A (ja)
FR (1) FR2242302B3 (ja)
GB (1) GB1477862A (ja)
NL (1) NL7411089A (ja)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990615A (en) * 1974-09-18 1976-11-09 The Continental Group, Inc. Convenience opening of containers for liquid products
US4165004A (en) * 1978-08-17 1979-08-21 The Continental Group, Inc. Inward embossed panel adjacent to punched pour hole in top end unit
US4332846A (en) * 1980-01-28 1982-06-01 National Distillers & Chemical Corp. Can cover
US4372460A (en) * 1981-05-18 1983-02-08 Minnesota Mining And Manufacturing Company Oil-resistant closure system
US4684043A (en) * 1984-09-24 1987-08-04 Realex Corporation Shipping seal for viscous product dispenser
US5067614A (en) * 1989-03-07 1991-11-26 Tetra Pak Holdings S.A. Packing container provided with opening arrangement
WO2002000512A1 (en) * 2000-06-26 2002-01-03 Alcan International Limited Can with peelably bonded closure
US20030062370A1 (en) * 1999-02-10 2003-04-03 Ball Melville Douglas Can with peelably bonded closure
US20080302752A1 (en) * 2004-06-23 2008-12-11 Dubois Limited Packaging Article
US20210039829A1 (en) * 2018-04-27 2021-02-11 Daiwa Can Company Tab, can lid, and method for manufacturing can lid

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH665400A5 (de) * 1984-04-24 1988-05-13 Weidenhammer Packungen Kombidose.
MY138331A (en) * 2004-12-09 2009-05-29 Crown Packaging Technology Inc Method of and apparatus for forming a closure

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217951A (en) * 1961-03-30 1965-11-16 Fr Hesser Maschinenfabrik Ag F Closure means for containers
US3441167A (en) * 1967-10-20 1969-04-29 American Can Co Easy opening container

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3217951A (en) * 1961-03-30 1965-11-16 Fr Hesser Maschinenfabrik Ag F Closure means for containers
US3441167A (en) * 1967-10-20 1969-04-29 American Can Co Easy opening container

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3990615A (en) * 1974-09-18 1976-11-09 The Continental Group, Inc. Convenience opening of containers for liquid products
US4165004A (en) * 1978-08-17 1979-08-21 The Continental Group, Inc. Inward embossed panel adjacent to punched pour hole in top end unit
US4332846A (en) * 1980-01-28 1982-06-01 National Distillers & Chemical Corp. Can cover
US4372460A (en) * 1981-05-18 1983-02-08 Minnesota Mining And Manufacturing Company Oil-resistant closure system
US4684043A (en) * 1984-09-24 1987-08-04 Realex Corporation Shipping seal for viscous product dispenser
US5067614A (en) * 1989-03-07 1991-11-26 Tetra Pak Holdings S.A. Packing container provided with opening arrangement
US20030062370A1 (en) * 1999-02-10 2003-04-03 Ball Melville Douglas Can with peelably bonded closure
WO2002000512A1 (en) * 2000-06-26 2002-01-03 Alcan International Limited Can with peelably bonded closure
US20080302752A1 (en) * 2004-06-23 2008-12-11 Dubois Limited Packaging Article
US20210039829A1 (en) * 2018-04-27 2021-02-11 Daiwa Can Company Tab, can lid, and method for manufacturing can lid

Also Published As

Publication number Publication date
FR2242302B3 (ja) 1977-06-17
FR2242302A1 (ja) 1975-03-28
DE2441490A1 (de) 1975-03-20
AU472220B2 (en) 1976-05-20
NL7411089A (nl) 1975-03-04
DK444174A (ja) 1975-04-28
JPS5050184A (ja) 1975-05-06
BR7407245D0 (pt) 1975-09-09
AU7277674A (en) 1976-03-11
GB1477862A (en) 1977-06-29

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