US3765352A - Combined can and end with means for protecting against severed score - Google Patents

Combined can and end with means for protecting against severed score Download PDF

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Publication number
US3765352A
US3765352A US00238187A US3765352DA US3765352A US 3765352 A US3765352 A US 3765352A US 00238187 A US00238187 A US 00238187A US 3765352D A US3765352D A US 3765352DA US 3765352 A US3765352 A US 3765352A
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United States
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wall
rib
section
axial wall
sheet material
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Expired - Lifetime
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US00238187A
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English (en)
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J Schubert
O Brown
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    • 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

Definitions

  • [5 7] 7 ABSTRACT An easy opening container wall comprising a container wall of sheet material having a line of weakness therein defining a tear portion at least partially removable from the container wall. Removal of the tear portion provides a relatively sharp edge along the tear portion. A dull surface is provided on the tear portion to shield the relatively sharp edge to protect the consumer from injury.
  • the present invention solves these problems by providing a shield for one or both of the sharp edges.
  • the sharp'edge on the panel is effectively shielded by a relatively dull surface which is positioned so as to make it difficult or impossible to get cut by the sharp edge of the panel. To do this,
  • the dull surface should be closely adjacent thesharp edge, and preferably the dullsurface lies slightly radially outwardly of the sharp edge. To most effectively protect against tongue injuries of the type described above, the dull surface should be on the inner side of the can end. Also, if the dull surface'were on the outer side of the panel, it would not be possible to"easily.initiate severance of the panel by forcing a section thereof inwardly.
  • the dull surface can advantageously be provided by multiple layers of sheet material.
  • the panel includes an inner section and a marginal regional with the marginal region having a cross sectional configuration which includes a first reverse bend section opening radially outwardly and a second reverse bend section joined to the first reverse bend section and opening radially inwardly.
  • the dull surface can advantageously be defined by the second reverse bend section which preferably lies generally along or slightly radially outwardly of the score line which defines the panel. With the panel-removed, the dull surface projects slightly radially outwardly of the sharp edge to act as a shield or protective device.
  • the edge of the panel is effectively dulled by the added thickness afforded by. the multiple layers of sheet material. Accordingly, even if the dull surface does not project radially outwardly of the sharp edge of the panel, the added thickness of the panel edge-as a result of the reverse bends has a substantial dulling effect.
  • Another advantage of this construction is that the multiple layers of sheet material around the panel periphery stiffens the panel against bending. This facilitates removal of the panel from the container.
  • the region of the peripheral wall of the container closely adjacent the line of weakness is deformed radially inwardly. This region of the peripheral wall is forced inwardly at least to a position in which it is substantially axially aligned with the sharp edge on the container. The proximity of the deformed region of the peripheral wall to the sharp edge on the container makes injury to the consumer much less likely to occur.
  • the deformed region can advantageously take the form of a circumscribing rib. Insofar as protection of the consumer is concerned, the deformed region may project radially inwardly to a location radially inwardly of the line of weakness. However, if initiation of severance of the panel from the container is to be accomplishedby depressing a paddle section of the panel inwardly, then the deformed region must not project radially inwardly so far that it interferes with inward movement of the paddle section. In addition, the deformed region should not project radially inwardly so far that it materially hampers removal of the contents from the container. This feature of the invention is useable individually or in combination with the shield for the sharp edge of the panel.
  • the present invention also provides a novel and advantageous method of making a double fold in sheet material. This method can be used to particular advantage in constructing a preferred form of the easy opening container wall of this invention.
  • a piece of sheet material is provided with the sheet material having first and second axially offset radial sections integrally joined by a generally axial wall.
  • the second radial section has an expansion rib formed integrally therewith adjacent the axial wall.
  • axially directed compressive forces are applied to the expansion rib to reduce the axial dimension of the rib and to apply a radial outwardforce to the adjacent end of the axial wall.
  • the effect of partially collapsing the expansion rib is to incline the axial wall in a known direction so that axial compressive forces applied to the two radial sections will provide a double fold.
  • this double fold or pair of reverse bends is of the type which can be used in the easy opening container wall of this invention, this method is particularly adapted for use in making the preferred form of the easy opening container wall.
  • the connecting wall which joins the two axially offset radial sections can advantageously be subjected to a coining operation.
  • This coining operation is advantageous for several reasons.
  • the coining operation elongates the connecting wall and the additional length is useful in providing the two folds.
  • the connecting wall is thinned as a result of the coining operation and portions of the thinned connecting wall are used to form the two folds. Cracking is less likely to occur when the folds are formed from relatively thin sheet material.
  • Another feature of this invention is the confining of the sheet material along the score line when the axially directed compressive forces are applied to the rib. This can advantageously be carried out by compressively engaging the sheet material adjacent the score line and maintaining such compressive engagement during at least a portion of the axial compression of the expansion rib. Such compressive engagement may result in a slight coining of the sheet material adjacent the score line.
  • FIG. 1 is a top plan view of an easy opening container constructed in accordance with the teachings of this invention.
  • FIG. 2 is an enlarged fragmentary sectional view taken generally along line 2-2 of FIG. 1.
  • FIG. 2a is a fragmentary sectional view of the container with the panel removed.
  • FIGS. 3-8 show a preferred method for constructing the easy opening container wall shown in FIG. 2.
  • FIG. 3 is a top plan view of a can end blank.
  • FIG. 5 is a sectional view taken on an axial plane and illustrating the tooling for forming a dimple and for coining the connecting wall.
  • FIG. 6 is a sectional view taken on an axial plane showing the tooling for converting the dimple into a hollow rivet and for formation of the rib.
  • FIG. 7 is a sectional view taken on an axial plane and illustrating the tooling for initiating axial collapse of the rib and axial compression of the radial sections.
  • FIG. 8 is an enlarged fragmentary sectional view taken on an axial plane illustrating the axial compression of the container wall to form two reverse bend sectrons.
  • FIGS. 1 and 2 illustrate an easy opening container 11 in the form of an easy opening can.
  • the container 11 includes a generally cylindrical peripheral wall 13 of sheet material, the upper end of which is closed by an easy opening container or end wall 15 which is attached to the upper end of the peripheral wall by interlockingflanges 17 and 19.
  • the lower end or bottom of the peripheral wall 13 can be closed in any conventional manner such as by an end wall integral therewith or by an end wall which is attached to the lower end of the peripheral wall in a conventional manner.
  • the peripheral wall 13 may be of conventional construction except for an annular rib 21 which projects radially inwardly closely adjacent and beneath the wall 15.
  • the easy opening container wall 15 is constructed of sheet material such as aluminum or an aluminum alloy.
  • the easy opening container wall 15 has a line of weakness in the form ofa score line 23 which defines a relatively large panel 25 which can be removed from the container 11.
  • the panel 25 covers a major portion of the area of the container wall 15 and has an inner or nonpublic surface 26.
  • the score line 23 could be of various configurations, in the embodiment illustrated, it is circular and concentric with the circular easy opening container wall 15.
  • An annular coined region 26a of reduced thickness extends along the score line 23.
  • a tab 27 is attached to the panel 25 in any suitable manner such as by a hollow rivet 29.
  • the tab 27 could be of various constructions, in the embodiment illustrated, it is of the type disclosed in common assignees copending application Ser. No. 64,291.
  • the tab 27 is integrally constructed from a single piece of sheet metal and generally includes a tab body or lever 31 and an attaching portion or ear 33 which is connected to the tab body 31 by a connecting wall 35.
  • the rivet 29 projects through the attaching ear 33 to attach the tab 27 to the panel 25.
  • the tab body 31 has a lifting end 37 and a rupturing flange 39 at opposite ends thereof.
  • the tab body 31 has an outer reinforcing curl 43 which extends substantially completely around the tab body except for the rupturing flange 39. Adjacent the connecting wall 35, the curl 43 has legs 45 and 47 connected by a bend portion 49 with the latter being engageable with the connecting wall 35.
  • the bend portion 49 is round and acts to support the connecting wall during manipulation of the tab.
  • An outer or marginal region of the panel 25 has the sheet material thereof bent to form an outwardly opening reverse bend portion 51 and an inwardly opening reverse bend portion 53.
  • the bend portion 53 has a smooth dull surface 55 which lies slightly radially outwardly of the score line 23.
  • the reverse bends 51 and 53 are joined to the score line 23 and to the panel 25, respectively.
  • the reverse bends 51 and 53 are formed by three layers of sheet material, and they are interconnected by a straight leg 57 which forms an intermediate layer of the marginal portion of the panel 25. In the embodiment illustrated, the three layers of sheet material which form the reverse bends 51 and 53 are contiguous. As shown in FIG. 2, the reverse bend 53 lies axially inwardly of the score line 23.
  • the sheet material of the tab at or adjacent the connecting wall 35 readily bends to allow the tab body 3l'to pivot relative to the attaching ear 33.
  • the reverse bend sections 51 and 53 stiffen a peripheral region of the panel 25 so that when the tab is pulled outwardly, the panel is easily torn from the container 11 and does not curl.
  • the rupture of the sheet material forms a relatively sharp edge 59 on the paddle section 58 as shown in dashed lines in FIG. 2 and a relatively sharp edge 60 on the container (FIG. 2a).
  • the dull surface 55 preferably lies radially outwardly of the sharp edge 59 to form a shield or partial sheath therefor.
  • the edge of the panel 25 is thick because it is defined by three layers of sheet material, i.e., those forming the reverse bends 51 and 53. These two factors combine to make it extremely difficult to be injured by the sharp edge 59.
  • the panel 25 can be completely removed in a conventional fashion by an outward pulling force on the tab 27.
  • the inner surface 26 of the panel 25 does not contain the sharp edge 59 with the result that licking of the inner surface will not cause cutting of the tongue.
  • the rib 21 on the peripheral wall 13 preferably projects radially inwardly so that the dull surface 55 of the paddle section 58 just clears the rib 21 as the paddle section is bent inwardly of the container 11. As shown in FIG. 2a, the rib 21 projects radially inwardly through a location which is in substantial alignment with the sharp edge 60. Thus, the rib serves as a guard to make cutting contact with the sharp edge 60 much more difficult.
  • FIGS. 3-8 illustrate a preferred method of constructing the easy opening container wall 15.
  • FIG. 3 shows a can end blank 61.
  • the blank 61 includes a peripheral attaching flange 63, an axial wall 65 and a pair of radial walls or sections 67 and 69 which are axially offset and interconnected by a generally axial or connecting wall 71.
  • the section 67 and the wall 71 are annular, and the section 69 is circular.
  • the blank 61 may be formed into this configuration with any suitable tooling.
  • FIG. 5 shows a first work operation in which adimple 73 is formed and in which the connecting wall 71 is coined to elongate the same.
  • the connecting wall 71 is squeezed between a lower coining die 75 and an upper coining die 77 with the compressive force being sufficient to cause thinning and consequent generally axial elongation of the connecting wall 71.
  • the elongation of the connecting wall 71' facilitates formation of the reverse bends 51 and 53.
  • the dies 75 and 77 have coining surfaces 79 and 81, respectively, which coin the sheet material between reference lines A-A and BB.
  • the lower coining die 75 also has horizontal supporting surfaces 83 and 85 for'supporting the radial section 67 and an annular region 87 which extends between the connecting wall 71 and the dimple 73.
  • the tooling provides spaces 88 and 88a to accommodate the elongation of the connecting wall 71.
  • the dimple 73 is formed by a punch 89 and a cooperating die 91.
  • the punch 89 engages the sheet material of the section 69 and offsets a zone of the same into a die cavity 93.
  • the offset sheet material is engaged between the cooperating surfaces of the punch 89 and the die 91 to coin the sloping wall of the dimple.
  • the coined regions are generally those portions of the dimple 73 which are shown in FIG. 5 as being compressively engaged.
  • a dimple making process which involves stretching and coining of the sheet material is disclosed in common assignees US. Pat. No. 3,638,597.
  • the annular region 87 is not coined during the work operation illustrated in FIG. 5.
  • the dimple 73 is converted into a hollow rivet 95 and the connecting wall 71 is converted into a shorter connecting wall or axial wall 97 and an annular expansion rib 99 which extends between the wall 97 and the rivet 95.
  • the wall 97 extends substantially axially whereas the connecting wall 71 (FIG. 5) is inclined or sloped relative to the'axis of the blank 61.-The annular expansion rib 99 is closely adjacent the wall 97.
  • the dimple 73 is converted into the rivet 95 by a rivet punch 101 and a rivet die 103.
  • An outer annular region of the dimple 73 is collapsed and flattened between working faces 105 and 107 of the punch 101 and the die 103, respectively.
  • the punch 101 has a head 109 which is within the rivet 95 to assist the formation thereof, and the rivet 95 is in a die cavity 111.
  • the expansion rib 99 is formed by stretching and deformation of the sheet material of the connecting wall 71 by a punch 113 and a die 115.
  • the punch 113 has a head 117 which engages the sheet material and forces the same into a die cavity 119.
  • the wall 97 is formed from the upper regions of the connecting wall 71. This is accomplished by the punch 113, the die and a tool 121. In addition, the die 115 cooperates with the tool 121 to bend the sheet material at the juncture of the section 67 and the wall 97 so that the wall 97 extends in a substantially axial direction.
  • the score line 23 is formed and an axial compressive force is applied to the expansion rib 99 by a pair of compression tools 125 and 127.
  • the scoring operation can advantageously be carried out by a scoring die 129 and by a tool 131 which supports the section 67.
  • a spring 130 urges the die 129 and the tool 127 in opposite directions.
  • the tool 127 and the die 129 are advanced relative to the tools 125 and 131.
  • the tool 127 strikes the upper end of the expansion rib 99 to initiate axial collapse and radial expansion thereof. Radial expansion of the expansion rib 99 moves the lower end of the axial wall 97 radially outwardly with the wall 97 pivoting about a region 132.
  • the scoring tool 129 applies an axial compressive force to the radial sections 67 and 69 with the result that the wall 97 becomes more inclined relative to the axis of the blank 61 in the manner shown in FIG. 7.
  • the expansion rib 99 is reduced in height by less than 50 percent, and preferably about 40 percent, in the work operation of FIG. 7.
  • the sheet material adjacent the ultimately formed score line 23 is confined by the tool 131 and the scoring die 129.
  • the sheet material between the die 129 and the tool 131 is compressively engaged to hold the section 67 in position and to form the score line 23.
  • the sheet material radially outwardly of the score line 23 is coined by a coining face 132a, and this further tends to hold the section 67 in position during the last bit of radial expansion of the expansion rib in the operation of FIG. 7.
  • the material radially inwardly of the score line 23 will be thinner than the material radially outwardly of the score line 23 as a result of the coining operation of FIG. 5, and consequently, the face 132a will not ordinarily coin the material radially inwardly of the score line.
  • FIG. 8 illustrates the next work operation in which
  • the radial sections 67 and 69 are moved toward each other with consequent collapse of the wall 97 to form reverse bend sections 51 and 53 substantially as shown in FIG. 2.
  • the blank 61 is retained between workholders 137 and 139, and the punch 141 is received within the rivet 95.
  • a compression tool 143 is moved upwardly as viewed in FIG. 8 to collapse the axial wall 97 to thereby form the reverse bends 51 and 53.
  • the reverse bend sections 51 and 53 are formed by squeezing of the sheet material between the workholder 139 and the compression tool 143.
  • the tool 143 cooperates with a tool 145 to spank or flatten the annular zone of sheet material immediately surrounding the rivet 95.
  • the connecting wall 71 Some of the material of the connecting wall 71 is used to form the reverse bends 51 and 53. Because the connecting wall 71 has been thinned, the reverse bends 51 and 53 are more easily formed and are less likely to have cracks.
  • the tab 27 (FIGS. 1 and 2) can be attached to the blank 61 by heading of the rivet 95 to thereby convert the latter into the rivet 29 (FIGS. 1 and 2). Thereafter, the resulting easy opening container wall can be attached to the container 11 as shown in FIG. 2.
  • FIGS. 3-8 Although the method shown in FIGS. 3-8 is particularly adapted for making an easy opening container wall of the type shown in FIG. 2, it may be used in other instances where it is desired to form a double fold or double reverse bend sections such as shown in FIG. 8.
  • a method of making an easy opening container wall comprising:
  • a method as defined in claim 1 including compressively engaging the sheet material adjacent said line of weakness and maintaining such compressive engagement during a portion of the first mentioned step of axially compressing.
  • a can end blank of sheet material including inner and outer sections joined by a generally axial wall with the outer section and the axial wall circumscribing the inner section, the axial wall extending generally axially inwardly in extending from the outer section to the inner section, the inner section having a rib formed therein adjacent the axial wall and circumscribing a region of the inner section;
  • scoring said outer section to define a panel at least partially removable from the piece of sheet material with the line of score being adjacent the axial wall;
  • step of providing includes coining a zone of the can end blank and then converting at least a portion of said zone into at least a portion of said axial wall.
  • step of providing includes forming a dimple adjacent said zone and converting said dimple into a hollow rivet; said step of attaching including heading sald rivet.
  • a method as defined in claim 3 wherein said step of applying forces to said rib is carried out in first and second stages by first and second sets of tooling, respectively, said first stage resulting in a height reduction of said rib of less than about 50 percent, said second stage being carried out substantially simultaneously with said step of applying forces to said inner and outer sections.
  • first and second axially spaced supporting surfaces on one side of the container wall and a tool on the other side of the container wall;
  • a method of making a double fold in an easy opening container wall comprising:
  • a container wall including inner and outer sections integrally joined by an axial wall, at least the regions of said inner and outer sections adjacent the axial wall being axially offset, said region of said outer section being generally transverse to said axial wall; providing a first set of tooling including first and second axially spaced supporting surfaces on one side of the container wall and a tool on the other side of the container wall:
  • said first set of tooling includes a score die on said other side of the container wall, said step of scoring being carried out by score die and said second supporting surface.
  • a method of making an easy opening container wall comprising:
  • scoring said first radial section to define a panel at least partially removable from the piece of sheet material with the line of score being adjacent the axial wall;
  • step of scoring forming a score line which defines said panel

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Closures For Containers (AREA)
US00238187A 1972-03-27 1972-03-27 Combined can and end with means for protecting against severed score Expired - Lifetime US3765352A (en)

Applications Claiming Priority (1)

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US23818772A 1972-03-27 1972-03-27

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US3765352A true US3765352A (en) 1973-10-16

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US (1) US3765352A (de)
JP (1) JPS497086A (de)
DE (1) DE2257580C3 (de)
FR (1) FR2177685B1 (de)
GB (1) GB1427024A (de)
NL (1) NL158720B (de)

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3853080A (en) * 1972-10-24 1974-12-10 Nat Can Corp Container end and forming method
US3868919A (en) * 1973-12-06 1975-03-04 Aluminum Co Of America Method and apparatus for forming easy opening container walls
US3871314A (en) * 1972-10-20 1975-03-18 Dorn Co V Method of making folded can ends and folded can end product
US3939787A (en) * 1974-08-19 1976-02-24 Owens-Illinois, Inc. Convenience closure with safe edges
US3945334A (en) * 1974-07-23 1976-03-23 Continental Can Company, Inc. Method of and apparatus for forming folds in a container panel
US3949692A (en) * 1972-04-06 1976-04-13 Entech Corporation Container lid and method of manufacture
US3990376A (en) * 1973-02-28 1976-11-09 Ermal C. Fraze Easy opening container wall
US3993010A (en) * 1974-07-04 1976-11-23 Keiji Taniuchi Process and apparatus for forming rearably detachable portion on sheet
US4012935A (en) * 1973-06-18 1977-03-22 Continental Can Company, Inc. Score and tool for forming the score
DE2554264A1 (de) * 1975-12-03 1977-06-16 Owens Illinois Inc Schnellverschluss mit sicherheitsraendern
US4052949A (en) * 1976-06-21 1977-10-11 Wescan, Inc. Method for making easy open container end with protective edges for its severed score
US4455114A (en) * 1981-09-14 1984-06-19 General Can Company, Inc. Method for making a metallic-convenience closure
US6425721B1 (en) * 2000-06-30 2002-07-30 Crown Cork & Seal Technologies Corporation Method of forming a safety can end
US6428261B1 (en) * 2000-05-24 2002-08-06 Crown Cork & Seal Technologies Corporation Method of forming a safety can end
US20030001788A1 (en) * 2001-06-28 2003-01-02 Masanao Fujiwara Antenna
US20030042258A1 (en) * 2001-08-16 2003-03-06 Timothy Turner Can end
US6772900B2 (en) 2001-08-16 2004-08-10 Rexam Beverage Can Company Can end
US20050006388A1 (en) * 2001-08-16 2005-01-13 Timothy Turner Can end
US20050044921A1 (en) * 2003-08-26 2005-03-03 Mcclung James A. Method and apparatus for forming container end shells with reinforcing rib
US20050044920A1 (en) * 2003-08-26 2005-03-03 Mcclung James A. Method and apparatus for forming container end shells with reinforcing rib
US20050199627A1 (en) * 2004-03-11 2005-09-15 Heinicke Paul R. Easy open can end and process of making
US20060096994A1 (en) * 2001-08-16 2006-05-11 Timothy Turner Can end
US7143623B1 (en) 2005-07-12 2006-12-05 Stolle Machinery Company, Llc Shell press and method of manufacturing a shell
US20080257900A1 (en) * 2007-04-20 2008-10-23 Rexam Beverage Can Company Can End With Negatively Angled Wall
US20090039091A1 (en) * 2007-08-10 2009-02-12 Rexam Beverage Can Company Can End With Countersink
US7743635B2 (en) 2005-07-01 2010-06-29 Ball Corporation Method and apparatus for forming a reinforcing bead in a container end closure
US7938290B2 (en) 2004-09-27 2011-05-10 Ball Corporation Container end closure having improved chuck wall with strengthening bead and countersink
US8313004B2 (en) 2001-07-03 2012-11-20 Ball Corporation Can shell and double-seamed can end
US8727169B2 (en) 2010-11-18 2014-05-20 Ball Corporation Metallic beverage can end closure with offset countersink
US8973780B2 (en) 2007-08-10 2015-03-10 Rexam Beverage Can Company Can end with reinforcing bead
US10723906B2 (en) * 2011-12-02 2020-07-28 Ppg Industries Ohio, Inc. Coating composition for a food or beverage can
EP3789132A1 (de) 2019-09-09 2021-03-10 Trivium Packaging Group Netherlands B.V. Leicht zu öffnendes ende für einen behälter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT390746B (de) * 1988-11-30 1990-06-25 Vaillant Gmbh Verfahren zur herstellung eines randflansches sowie nach diesem verfahren hergestellter randflansch
DE10055527C2 (de) * 2000-11-09 2002-10-17 Rasselstein Hoesch Gmbh Dosendeckel
WO2016140356A1 (ja) * 2015-03-04 2016-09-09 ダイワボウホールディングス株式会社 湿式不織布用レーヨン繊維とその製造方法、湿式不織布とその製造方法、及び水解紙

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381848A (en) * 1966-10-05 1968-05-07 Fraze Ermal C Easy-opening can end
US3434623A (en) * 1966-12-01 1969-03-25 Cookson Sheet Metal Dev Ltd Container with pull-tab opener
US3437228A (en) * 1965-10-14 1969-04-08 Nat Steel Corp Container structure and manufacture
US3696961A (en) * 1970-10-20 1972-10-10 Continental Can Co Protective edge for easy opening container

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411661A (en) * 1965-10-23 1968-11-19 Walter M. Perry Container with openable segment
ZA695279B (en) * 1969-04-10 1971-03-31 Continental Can Co Protective edge for easy opening container and the method for forming the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3437228A (en) * 1965-10-14 1969-04-08 Nat Steel Corp Container structure and manufacture
US3381848A (en) * 1966-10-05 1968-05-07 Fraze Ermal C Easy-opening can end
US3434623A (en) * 1966-12-01 1969-03-25 Cookson Sheet Metal Dev Ltd Container with pull-tab opener
US3696961A (en) * 1970-10-20 1972-10-10 Continental Can Co Protective edge for easy opening container

Cited By (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3949692A (en) * 1972-04-06 1976-04-13 Entech Corporation Container lid and method of manufacture
US3871314A (en) * 1972-10-20 1975-03-18 Dorn Co V Method of making folded can ends and folded can end product
US3853080A (en) * 1972-10-24 1974-12-10 Nat Can Corp Container end and forming method
US3990376A (en) * 1973-02-28 1976-11-09 Ermal C. Fraze Easy opening container wall
US4012935A (en) * 1973-06-18 1977-03-22 Continental Can Company, Inc. Score and tool for forming the score
US3868919A (en) * 1973-12-06 1975-03-04 Aluminum Co Of America Method and apparatus for forming easy opening container walls
US3993010A (en) * 1974-07-04 1976-11-23 Keiji Taniuchi Process and apparatus for forming rearably detachable portion on sheet
US3945334A (en) * 1974-07-23 1976-03-23 Continental Can Company, Inc. Method of and apparatus for forming folds in a container panel
US3939787A (en) * 1974-08-19 1976-02-24 Owens-Illinois, Inc. Convenience closure with safe edges
DE2554264A1 (de) * 1975-12-03 1977-06-16 Owens Illinois Inc Schnellverschluss mit sicherheitsraendern
US4052949A (en) * 1976-06-21 1977-10-11 Wescan, Inc. Method for making easy open container end with protective edges for its severed score
US4455114A (en) * 1981-09-14 1984-06-19 General Can Company, Inc. Method for making a metallic-convenience closure
US6428261B1 (en) * 2000-05-24 2002-08-06 Crown Cork & Seal Technologies Corporation Method of forming a safety can end
US6425721B1 (en) * 2000-06-30 2002-07-30 Crown Cork & Seal Technologies Corporation Method of forming a safety can end
US20030001788A1 (en) * 2001-06-28 2003-01-02 Masanao Fujiwara Antenna
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
US8104319B2 (en) 2001-08-16 2012-01-31 Rexam Beverage Can Company Method of forming a can end
US20090266824A1 (en) * 2001-08-16 2009-10-29 Rexam Beverage Can Company Can end
US20050006388A1 (en) * 2001-08-16 2005-01-13 Timothy Turner Can end
US8052005B2 (en) 2001-08-16 2011-11-08 Rexam Beverage Can Company Can end
US7004345B2 (en) 2001-08-16 2006-02-28 Rexam Beverage Can Company Can end
US8328492B2 (en) 2001-08-16 2012-12-11 Rexam Beverage Can Company Can end
US20060096994A1 (en) * 2001-08-16 2006-05-11 Timothy Turner Can end
US20040200838A1 (en) * 2001-08-16 2004-10-14 Timothy Turner Can end
US7644833B2 (en) 2001-08-16 2010-01-12 Rexam Beverage Can Company Can end
US20030042258A1 (en) * 2001-08-16 2003-03-06 Timothy Turner Can end
US20040211780A1 (en) * 2001-08-16 2004-10-28 Timothy Turner Can end
US7174762B2 (en) 2001-08-16 2007-02-13 Rexam Beverage Can Company Can end
US20080050207A1 (en) * 2001-08-16 2008-02-28 Rexam Beverage Can Company Can End
US7350392B2 (en) 2001-08-16 2008-04-01 Rexam Beverage Can Company Can end
US20040065663A1 (en) * 2001-08-16 2004-04-08 Timothy Turner Can end
US6772900B2 (en) 2001-08-16 2004-08-10 Rexam Beverage Can Company Can end
US20090269169A1 (en) * 2001-08-16 2009-10-29 Rexam Beverage Can Company Can end
US7556168B2 (en) 2001-08-16 2009-07-07 Rexam Beverage Can Company Can end with fold
US7107810B2 (en) 2003-08-26 2006-09-19 Stolle Machinery Company, Llc Method and apparatus for forming container end shells with reinforcing rib
US20050044921A1 (en) * 2003-08-26 2005-03-03 Mcclung James A. Method and apparatus for forming container end shells with reinforcing rib
US7036348B2 (en) 2003-08-26 2006-05-02 Stolle Machinery Company, Llc Method and apparatus for forming container end shells with reinforcing rib
US20050044920A1 (en) * 2003-08-26 2005-03-03 Mcclung James A. Method and apparatus for forming container end shells with reinforcing rib
US7493790B2 (en) 2004-03-11 2009-02-24 Crown Packaging Technology, Inc. Process of making easy open can end
US7147122B2 (en) 2004-03-11 2006-12-12 Crown Packaging Technology, Inc. Easy open can end
US20060113306A1 (en) * 2004-03-11 2006-06-01 Heinicke Paul R Process of making easy open can end
US20050199627A1 (en) * 2004-03-11 2005-09-15 Heinicke Paul R. Easy open can end and process of making
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
US20120292329A1 (en) * 2004-09-27 2012-11-22 Ball Corporation 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
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
US7143623B1 (en) 2005-07-12 2006-12-05 Stolle Machinery Company, Llc Shell press and method of manufacturing a shell
US20080257900A1 (en) * 2007-04-20 2008-10-23 Rexam Beverage Can Company Can End With Negatively Angled Wall
US8875936B2 (en) 2007-04-20 2014-11-04 Rexam Beverage Can Company Can end with negatively angled wall
US8973780B2 (en) 2007-08-10 2015-03-10 Rexam Beverage Can Company Can end with reinforcing bead
US20090039091A1 (en) * 2007-08-10 2009-02-12 Rexam Beverage Can Company Can End With Countersink
US9540137B2 (en) 2007-08-10 2017-01-10 Rexam Beverage Can Company Can end with reinforcing bead
US8011527B2 (en) 2007-08-10 2011-09-06 Rexam Beverage Can Company Can end with countersink
US8727169B2 (en) 2010-11-18 2014-05-20 Ball Corporation Metallic beverage can end closure with offset countersink
US10723906B2 (en) * 2011-12-02 2020-07-28 Ppg Industries Ohio, Inc. Coating composition for a food or beverage can
EP3789132A1 (de) 2019-09-09 2021-03-10 Trivium Packaging Group Netherlands B.V. Leicht zu öffnendes ende für einen behälter
WO2021048752A1 (en) 2019-09-09 2021-03-18 Trivium Packaging Group Netherlands B.V. Method for producing an easy-open lid for a container, and an easy-open lid for a container

Also Published As

Publication number Publication date
JPS497086A (de) 1974-01-22
NL158720B (nl) 1978-12-15
DE2257580C3 (de) 1981-07-16
FR2177685B1 (de) 1978-03-03
DE2257580B2 (de) 1980-12-11
FR2177685A1 (de) 1973-11-09
DE2257580A1 (de) 1973-10-11
NL7214061A (de) 1973-10-01
GB1427024A (en) 1976-03-03

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