US3650387A - Cans - Google Patents

Cans Download PDF

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Publication number
US3650387A
US3650387A US881542A US3650387DA US3650387A US 3650387 A US3650387 A US 3650387A US 881542 A US881542 A US 881542A US 3650387D A US3650387D A US 3650387DA US 3650387 A US3650387 A US 3650387A
Authority
US
United States
Prior art keywords
side wall
metal
tear
barrier
metal member
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
US881542A
Other languages
English (en)
Inventor
John M Hornsby
William G Wood
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.)
Mars GB Ltd
Petfoods Ltd
Original Assignee
Petfoods Ltd
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 Petfoods Ltd filed Critical Petfoods Ltd
Application granted granted Critical
Publication of US3650387A publication Critical patent/US3650387A/en
Assigned to MARS G.B. LIMITED reassignment MARS G.B. LIMITED CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE 06/26/47 Assignors: MARS LIMITED
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall
    • B65D17/4011—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall for opening completely by means of a tearing tab
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S206/00—Special receptacle or package
    • Y10S206/815—Finger opening

Definitions

  • ABSTRACT [30] Foreign Application Priority Data A can has a metal end and a side wall of a different metal. Selfsupporting sheet material which is water-impervious and elec- DCC. l2, Great Britain trolytically inert i respect to the metal of the i W8" lates the end from the contents of the can and serves to pro- [52] US. Cl.
  • the present invention relates to improvements in cans, for example cans for containing sterilized food, and more particularly to means for isolating an end of the can from the contents of the can.
  • the tear-off end In the case of a can having a tear-off end, such ends usually being scored or otherwise deformed to facilitate opening of the end by tearing out an area thereof, it is preferred to make the tear-off end of aluminum, which can readily be torn, but the remainder of the can of a stronger and/or less expensive material, such as tinplate.
  • the aluminum end corrodes, because an electric cell is set up between the different metals, with the result that the canned product has an undesirably short shelf life
  • the rate of corrosion can be diminished by reducing the concentration of salts in the contents but this is often undesirable, as for example in the case of canned foods, where the salts are necessary nutritional ingredients.
  • the present invention enables the difficulties which are encountered in the use of such cans to be overcome.
  • a can having a metal end and a side wall of a metal different from the metal of the end, in which the end is isolated from the contents of the can by a barrier of self-supporting sheet material which is water-impervious and electrolytically inert with respect to the metal of the side wall.
  • the sheet material can serve to preserve the contents from contamination, for example contamination by entry of bacteria following mechanical damage to the end.
  • the sheet material should be stable at the temperature of the heat treatment.
  • Suitable sheet materials include thin tin foil cellulose film and films of laminates of thermoplastics materials, such as polyethylene, polypropylene, polyamide and polyester.
  • the invention by providing an inner sealing membrane, makes it possible to perforate a tinplate can end in order to render it more readily tearable, without loss of the possibility of maintaining the sterility of the contents of the can.
  • the perforated end still plays an important protective role against mechanical damage, for example during processing or subsequent handling, storage and transport, and pennits the use of readily tearable foils or films as the inner membrane.
  • thermoplastics films mentioned while imperforate, may exhibit a small degree of porosity to gases, e.g., water vapor, but are impermeable to micro-organisms, and thus serve to preserve the contents of the can from bacterial contamination.
  • gases e.g., water vapor
  • FIGS. 1 and 2 illustrate steps in making a can according to the invention and show a cross section through an end edge of a can in accordance with the invention before and after sealing, respectively,
  • FIG. 3 shows in perspective a can in accordance with the invention
  • FIG. 4 shows the can of FIG. 3 partly opened by tearing the end
  • FIG. 5 shows in perspective an alternative form of a can in accordance with the invention.
  • FIG. 6 shows the can of FIG. 5 partly opened by tearing the end.
  • an aluminum can end 1 is shown placed over the mouth of a tinplate can side wall 2.
  • a layer 3 of a sealing compound usually an organic solventor water-based composition, is applied to the periphery of the underside of the end 1, as in conventional can-making techniques.
  • a piece of polyester film 4 is placed on the underside of the end 1 and adheres to the sealing compound layer 3.
  • a further layer 5 of the conventional sealing compound is applied to the periphery of the underside of the film 4 to provide a good seal when the edges of the end 1 and the wall 2 are rolled and crimped together as shown in FIG. 2, in the usual sealing operation. In the sealing operation, the edge of the film 4 becomes trapped between the edges of the end 1 and the wall 2.
  • the film 4 serves to isolate the end I from the contents 6 of the can.
  • the can end 1 is scored along a line 7 around its periphery to provide a line of weakness along which the end 1 can be torn.
  • the end 1 is also provided with a circumferential groove 8, between its peripheral edge and the score line 7, which serves to space the film 4 from underside of the can end 1 near its periphery to avoid the risk of the film 4 being punctured by the sharp edge of the end 1 if torn along the score line 7 as a result of accidental damage.
  • the cans shown in FIGS. 3 to 6 have aluminum tear-off ends 1, with side walls 2 and plain ends (not visible) of tinplate, and are produced by the method described above.
  • the tear-off ends 1 are provided with ring-pull finger grips 9 including a portion having a circular aperture therein, through which protrudes a circular raised portion 10 of the aluminum can end 1 having its head riveted so as to form a circumferential shoulder securing the finger grip 9 and the can end 1 together.
  • the can ends 1 are scored along lines 7 to facilitate tearing when the finger grips 9 are pulled.
  • the score line 7 defines a spiral-sided area which can be progressively torn out, commencing around the raised and rivetted portion 10 of the can end 1.
  • the score line 7 continues in a circle along the edge of the end 1, enabling a circular aperture to be made in the end 1 by tearing.
  • the score line 7 proceeds in a circle along the edge of the end 1, enabling a circular area to be torn out, commencing at the region nearest the raised and riveted portion 10 of the can end 1.
  • Each of the cans has polyester film 4 isolating the end 1 from the contents of the can.
  • the polyester film 4 can be readily torn to give access to the contents.
  • any impact adhesive or heat treatment may be used to bond the periphery of the piece of sheet material to the periphery of the can end instead of the usual sealing compound.
  • the sheet material can be placed over the mouth of the can before sealing.
  • a can comprising: a tubular metal side wall having first and second ends; first and second closure means closing respectively said first and second ends; material contained in said can enclosed by said side wall and said first and second closure means; said first closure means including an imperforate readily tearable member of a metal different from that of said side wall and provided with means defining in said metal member a line of tear, and a barrier of self-supporting sheet material which is water-impervious and inert to said contained material and electrolytically inert with respect to the metal of said side wall in the presence of said contained minum.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Wrappers (AREA)
  • Packages (AREA)
US881542A 1968-12-12 1969-12-02 Cans Expired - Lifetime US3650387A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB59237/68A GB1276662A (en) 1968-12-12 1968-12-12 Improvements in cans

Publications (1)

Publication Number Publication Date
US3650387A true US3650387A (en) 1972-03-21

Family

ID=10483354

Family Applications (1)

Application Number Title Priority Date Filing Date
US881542A Expired - Lifetime US3650387A (en) 1968-12-12 1969-12-02 Cans

Country Status (9)

Country Link
US (1) US3650387A (de)
BE (1) BE742739A (de)
CA (1) CA919107A (de)
CH (1) CH492607A (de)
DE (1) DE1961877A1 (de)
DK (1) DK122270B (de)
FR (1) FR2025940A1 (de)
GB (1) GB1276662A (de)
NL (1) NL6918381A (de)

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444308A (en) * 1983-01-03 1984-04-24 Sealright Co., Inc. Container and dispenser for cigarettes
EP0291478A2 (de) * 1987-05-06 1988-11-17 AB AKERLUND & RAUSING Verschlussdeckel für ein Behältnis
US4913306A (en) * 1988-02-16 1990-04-03 Ab Akerlund & Rausing Openable end closure for a packaging container
US4961511A (en) * 1988-02-16 1990-10-09 Ab Akerlund & Rausing End closure for a packaging container
US5005707A (en) * 1986-03-20 1991-04-09 Oscar Mayer Foods Corporation Reclosable package
US5685189A (en) * 1996-01-22 1997-11-11 Ball Corporation Method and apparatus for producing container body end countersink
US6089072A (en) * 1998-08-20 2000-07-18 Crown Cork & Seal Technologies Corporation Method and apparatus for forming a can end having an improved anti-peaking bead
US6102243A (en) * 1998-08-26 2000-08-15 Crown Cork & Seal Technologies Corporation Can end having a strengthened side wall and apparatus and method of making same
US20030173367A1 (en) * 1999-12-08 2003-09-18 Nguyen Tuan A. Metallic beverage can end with improved chuck wall and countersink
US20060042344A1 (en) * 2004-07-29 2006-03-02 Bathurst Jess N Method and apparatus for shaping a metallic container end closure
US20060071005A1 (en) * 2004-09-27 2006-04-06 Bulso Joseph D Container end closure with improved chuck wall and countersink
US20070007294A1 (en) * 2005-07-01 2007-01-11 Jentzsch Kevin R Method and apparatus for forming a reinforcing bead in a container end closure
US20080230548A1 (en) * 1999-12-08 2008-09-25 Metal Container Corporation Can lid closure
US20090180999A1 (en) * 2008-01-11 2009-07-16 U.S. Nutraceuticals, Llc D/B/A Valensa International Method of preventing, controlling and ameliorating urinary tract infections using cranberry derivative and d-mannose composition
WO2009090171A1 (en) * 2008-01-18 2009-07-23 Crown Packaging Technology, Inc. Can end
US20110031256A1 (en) * 2001-07-03 2011-02-10 Stodd R Peter Can Shell and Double-Seamed Can End
US20130126528A1 (en) * 2002-06-11 2013-05-23 Crown Packaging Technology, Inc. Easily openable can lid having a movable portion
US8727169B2 (en) 2010-11-18 2014-05-20 Ball Corporation Metallic beverage can end closure with offset countersink
US9016034B2 (en) 2008-09-04 2015-04-28 Crown Packaging Technology, Inc. Easily openable can end, container, and methods of forming

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA807387B (en) * 1979-12-08 1981-11-25 Metal Box Co Ltd Containers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3220599A (en) * 1958-12-17 1965-11-30 Fried Receptacle and combined quick opening means
US3241708A (en) * 1963-12-04 1966-03-22 Fernando M Ronci Pull tab can opener

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3220599A (en) * 1958-12-17 1965-11-30 Fried Receptacle and combined quick opening means
US3241708A (en) * 1963-12-04 1966-03-22 Fernando M Ronci Pull tab can opener

Cited By (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4444308A (en) * 1983-01-03 1984-04-24 Sealright Co., Inc. Container and dispenser for cigarettes
US5005707A (en) * 1986-03-20 1991-04-09 Oscar Mayer Foods Corporation Reclosable package
EP0291478A2 (de) * 1987-05-06 1988-11-17 AB AKERLUND & RAUSING Verschlussdeckel für ein Behältnis
EP0291478A3 (en) * 1987-05-06 1990-02-14 Ab Akerlund & Rausing A closure device for a packaging container
US4913306A (en) * 1988-02-16 1990-04-03 Ab Akerlund & Rausing Openable end closure for a packaging container
US4961511A (en) * 1988-02-16 1990-10-09 Ab Akerlund & Rausing End closure for a packaging container
US5685189A (en) * 1996-01-22 1997-11-11 Ball Corporation Method and apparatus for producing container body end countersink
US6089072A (en) * 1998-08-20 2000-07-18 Crown Cork & Seal Technologies Corporation Method and apparatus for forming a can end having an improved anti-peaking bead
US6102243A (en) * 1998-08-26 2000-08-15 Crown Cork & Seal Technologies Corporation Can end having a strengthened side wall and apparatus and method of making same
US6408498B1 (en) 1998-08-26 2002-06-25 Crown Cork & Seal Technologies Corporation Can end having a strengthened side wall and apparatus and method of making same
US20030173367A1 (en) * 1999-12-08 2003-09-18 Nguyen Tuan A. Metallic beverage can end with improved chuck wall and countersink
US7673768B2 (en) 1999-12-08 2010-03-09 Metal Container Corporation Can lid closure
US7100789B2 (en) 1999-12-08 2006-09-05 Ball Corporation Metallic beverage can end with improved chuck wall and countersink
US20080230548A1 (en) * 1999-12-08 2008-09-25 Metal Container Corporation Can lid closure
US10843845B2 (en) 2001-07-03 2020-11-24 Ball Corporation Can shell and double-seamed can end
US10246217B2 (en) 2001-07-03 2019-04-02 Ball Corporation Can shell and double-seamed can end
US9371152B2 (en) 2001-07-03 2016-06-21 Ball Corporation Can shell and double-seamed can end
US8931660B2 (en) 2001-07-03 2015-01-13 Ball Corporation Can shell and double-seamed can end
US8313004B2 (en) 2001-07-03 2012-11-20 Ball Corporation Can shell and double-seamed can end
US20110031256A1 (en) * 2001-07-03 2011-02-10 Stodd R Peter Can Shell and Double-Seamed Can End
US8733576B2 (en) * 2002-06-11 2014-05-27 Crown Packaging Technology, Inc. Easily openable can lid having a movable portion for pull tab access
US20130126528A1 (en) * 2002-06-11 2013-05-23 Crown Packaging Technology, Inc. Easily openable can lid having a movable portion
US20060042344A1 (en) * 2004-07-29 2006-03-02 Bathurst Jess N Method and apparatus for shaping a metallic container end closure
US7500376B2 (en) 2004-07-29 2009-03-10 Ball Corporation Method and apparatus for shaping a metallic container end closure
US20110204055A1 (en) * 2004-09-27 2011-08-25 Ball Corporation Container End Closure With Improved Chuck Wall and Countersink
US20060071005A1 (en) * 2004-09-27 2006-04-06 Bulso Joseph D Container end closure with improved chuck wall and countersink
US7938290B2 (en) 2004-09-27 2011-05-10 Ball Corporation Container end closure having improved chuck wall with strengthening bead and countersink
US20120292329A1 (en) * 2004-09-27 2012-11-22 Ball Corporation Container End Closure With Improved Chuck Wall and Countersink
US8505765B2 (en) * 2004-09-27 2013-08-13 Ball Corporation Container end closure with improved chuck wall provided between a peripheral cover hook and countersink
US8235244B2 (en) 2004-09-27 2012-08-07 Ball Corporation Container end closure with arcuate shaped chuck wall
US20090020543A1 (en) * 2004-09-27 2009-01-22 Ball Corporation Container End Closure With Improved Chuck Wall and Countersink
US7506779B2 (en) 2005-07-01 2009-03-24 Ball Corporation Method and apparatus for forming a reinforcing bead in a container end closure
US20090120943A1 (en) * 2005-07-01 2009-05-14 Ball Corporation Method and Apparatus for Forming a Reinforcing Bead in a Container End Closure
US8205477B2 (en) 2005-07-01 2012-06-26 Ball Corporation Container end closure
US7743635B2 (en) 2005-07-01 2010-06-29 Ball Corporation Method and apparatus for forming a reinforcing bead in a container end closure
US20100243663A1 (en) * 2005-07-01 2010-09-30 Ball Corporation Container End Closure
US20070007294A1 (en) * 2005-07-01 2007-01-11 Jentzsch Kevin R Method and apparatus for forming a reinforcing bead in a container end closure
US20090180999A1 (en) * 2008-01-11 2009-07-16 U.S. Nutraceuticals, Llc D/B/A Valensa International Method of preventing, controlling and ameliorating urinary tract infections using cranberry derivative and d-mannose composition
CN101910008B (zh) * 2008-01-18 2012-05-23 皇冠包装技术公司 罐盖
WO2009090171A1 (en) * 2008-01-18 2009-07-23 Crown Packaging Technology, Inc. Can end
US9199763B2 (en) 2008-01-18 2015-12-01 Crown Packaging Technology, Inc. Can end
US20110186575A1 (en) * 2008-01-18 2011-08-04 Crown Packaging Technology, Inc. Can end
US9016034B2 (en) 2008-09-04 2015-04-28 Crown Packaging Technology, Inc. Easily openable can end, container, and methods of forming
US8727169B2 (en) 2010-11-18 2014-05-20 Ball Corporation Metallic beverage can end closure with offset countersink

Also Published As

Publication number Publication date
DE1961877A1 (de) 1970-07-09
CH492607A (de) 1970-06-30
GB1276662A (en) 1972-06-07
BE742739A (de) 1970-05-14
CA919107A (en) 1973-01-16
FR2025940A1 (de) 1970-09-11
NL6918381A (de) 1970-06-16
DK122270B (da) 1972-02-14

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Legal Events

Date Code Title Description
AS Assignment

Owner name: MARS G.B. LIMITED

Free format text: CHANGE OF NAME;ASSIGNOR:MARS LIMITED;REEL/FRAME:004278/0762