WO1991009784A1 - Structures de conteneurs en tole d'acces facile - Google Patents

Structures de conteneurs en tole d'acces facile Download PDF

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Publication number
WO1991009784A1
WO1991009784A1 PCT/US1990/007588 US9007588W WO9109784A1 WO 1991009784 A1 WO1991009784 A1 WO 1991009784A1 US 9007588 W US9007588 W US 9007588W WO 9109784 A1 WO9109784 A1 WO 9109784A1
Authority
WO
WIPO (PCT)
Prior art keywords
opener
tear strip
scoreline
panel
sheet metal
Prior art date
Application number
PCT/US1990/007588
Other languages
English (en)
Inventor
William T. Saunders
Original Assignee
Weirton Steel Corporation
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 Weirton Steel Corporation filed Critical Weirton Steel Corporation
Publication of WO1991009784A1 publication Critical patent/WO1991009784A1/fr

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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
    • B65D17/28—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
    • B65D17/34—Arrangement or construction of pull or lift tabs
    • B65D17/347—Arrangement or construction of pull or lift tabs characterised by the connection between the tab and a detachable member or portion of the container
    • 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
    • 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
    • B65D17/4012—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 partially by means of a tearing tab

Definitions

  • This invention relates to easy-access sheet metal container structures, their fabrication and usage.
  • this invention is concerned with scoreline, profiling and reinforcing features, for container wall panel and integral opener structures, which facilitate both fabrication and functioning of such structures for purposes of severing scored sheet metal and movement of a resultant tear strip from such wall panel to form an opening for a container while retaining and storing such tear strip and opener externally of the container without obstructing such opening.
  • Prior art convenience-feature end closure structures for beverage cans include:
  • FIG. 1 is a top plan view of an endwall panel embodiment omitting an opener for better illustrating tear strip scoreline and profiling features of the invention
  • FIG. 2 is a bottom plan view of the embodiment of
  • FIG. 1 subsequent to forming a unitary rivet button for securing an integral opener to the tear strip;
  • FIG. 3 is a top plan view of the embodiment of FIG. 2 with the new opener of the invention secured in place by a unitary rivet;
  • FIG. 4 is a top plan view, after opening, of the embodiment of FIG. 3;
  • FIG. 5 is a bottom plan view of the embodiment of FIG. 4;
  • FIG. 6 is a top plan view of the new opener structure of the invention
  • FIG. 7 is an enlarged front elevational view showing the "gull-wing" working end of the new opener of the invention
  • FIG. 8 is a partial side elevation view, partially in section, of such gull-wing portion of the opener shown in FIG. 7;
  • FIG. 9 is a cross-sectional view of the embodiment of FIG. 3 taken along the line 9-9 of FIG. 3;
  • FIG. 10 is an enlarged cross-sectional schematic of a portion of the endwall cross section of FIG. 9;
  • FIG. 11 is an enlarged schematic view of perspective wall and opener portions describing the initial lever-action rupture of the nose portion of an elongated tear strip for opening a container in accordance with the invention
  • FIG. 12 is an enlarged perspective view for describing a sequential lever action opening stage subsequent to that of FIG. 11;
  • FIG. 13 is an enlarged perspective view for describing an opening stage subsequent to that of FIG. 12;
  • FIG. 14 is a cross-sectional view for showing storage of the tear strip and integral opener on the exterior surface of an endwall closure structure embodiment of the invention
  • FIG. 15 is a top plan view of an elongated unitary sheet metal strip showing the progression of sequential fabricating stages for the new opener of the invention.
  • Endwall closure 20 includes peripheral chime seam metal 21, chuck wall 22, a countersink indentation 24 and protruding bead 25; all of which are symmetrically disposed in relation to the geometric center 26 of wall panel 28; and, each can be fabricated as part of a shell forming stage for an end closure.
  • a pair of panel protrusions one of which is designated as 29, provide for accurate registration as the sheet metal work product is moved from station to station during fabrication of easy-access features.
  • the sheet metal of panel 28 (which has a preselected nominal thickness) is scored to provide residual metal of predetermined, decreased thickness(es) .
  • Such scoring defines a tear strip 30 which is .--to be moved from the substantially planar contour of such wall panel by severing such residual metal.
  • Profiling of the tear strip 30 is carried out contemporaneously with such scoring and functions to take up excess metal generated by such scoring.
  • an elongated U-shaped tear strip 30 is defined by scoreline means which include curvilinear scoreline 32 (which is arcuate-shaped in plan view) and a pair of elongated scoreline legs 34,35.
  • a scoreline leg extends from each side of the arcuate-shaped scoreline 32, in parallel or slightly converging relationship to central longitudinal axis 36, to provide a narrow-width elongated tear strip 30. Its lateral sides extend from such curvilinear closed end (defined by arcuate-shaped scoreline 32) toward the remaining (open) end 38 of the U- shaped configuration.
  • the closed end 32 is contiguous to the periphery of the endwall panel and the open end 38 is contiguous to the geometric center of the illustrated panel.
  • scoreline legs 34,35 are symmetrically disposed in relation to central longitudinal axis 36; are preferably linear and converge slightly in extending from the arcuate-shaped scoreline 32. Scoreline legs 34,35 can be parallel but, any substantial divergence is avoided in accordance with present teachings. In the embodiment shown in FIGS. 1,2 the angle of convergence of each leg is about 1" 15" (with a practical combined maximum convergence of about 3" considering convergence of both legs) .
  • the scoreline legs are rectilinear for fabricating purposes, and for tooling preparation purposes; but, slight curvilinearity in configuration could be tolerated if the above-described, narrow-width, symmetrical characteristics for the tear strip which precludes slippage of the tear strip or opener into the container, and the desired characteristics for the opening, are maintained; also, the lever action and other features, described later, which comprise novel concepts and teachings of the invention must be maintained.
  • elongated scoreline legs 34, 35 terminate at, and define, such remaining (open) end 38 of the U-shaped configuration; so that, tear strip 30, while being movable from the original contour of the wall panel 28, remains unitary with the remainder of such wall panel by means of the sheet metal at open end 38.
  • a panel portion 40 located beneath handle end 42 of a tab opener 44 (as seen in FIG. 3) , facilitates prying access for initiating lifting of handle end 42 in a direction away from the external surface of panel 28.
  • Shallow-depth profiling ribs 46,47 and 50,51 (FIG. 2) in the defined tear strip 30 serve plural functions in addition to absorbing excess metal generating during scoring.
  • the profiling ribs are parallel to the scoreline legs as shown by FIGS. 1,2.
  • Such profiling is strategically placed longitudinally within the scored periphery of tear strip 30 to help establish separate longitudinal segments of the tear strip which help to achieve desired action during the opening procedure and, also, a desired folding action for storing such longitudinal sections of tear strip 30 and opener 44 (within the confines of the chuck wall 22, FIG. 4).
  • the length and disposition of the tear strip, placement of the rivet, and length of the opener are coordinated as taught herein for such interfitting storage purposes.
  • Tear strip profiling ribs 46,47 and 50, 51 extend longitudinally in a preselected manner. They are positioned to provide a segment 54 of the tear strip, which is transverse to the central longitudinal axis (36) and longitudinally intermediate rib pairs 46,47 and 50,51, respectively.
  • the transverse section 54 is free of longitudinally-extending profiling and allows for placement of a rivet button as shown in FIG. 2 (as well as the rivet head on the exterior) ; and, in addition, such spacing provides for folding of the longitudinally distinct segments of the tear strip.
  • the lead segment includes nose portion 55 and transverse section 54 (which includes the rivet) ; and, the trailing segment 56 comprises the remaining portion of the tear strip extending to the open end of the U-shape at 38.
  • Ribs 46,47 are in the lead fold segment (extending into the semi-circle defined by scoreline 32) ; ribs 50,51 are in the second trailing fold
  • tear strip 30 are folded in relation to each other during opening and
  • Individual profiling ribs 46,50 are contiguous to, and parallel to, scoreline leg 34 within the periphery
  • ribs 50,51 are contiguous to, and parallel to, scoreline leg 35 within, the periphery of tear strip 30.
  • longitudinally extending rib means do not extend beyond the distal ends of scoreline legs. That is, ribs 50,51 preferably
  • Transverse section 54 (FIG. 2) of the tear strip 30 is free of longitudinally-directed ribs and surrounds
  • the nose section 55 (circumscribed at least in part by scoreline 32) and the transverse section 54, taken together comprise a first tear strip segment; a second tear strip segment is started at the start of ribs 50,51 which extend toward the
  • segment which includes nose section 55 and transverse section 54 is folded in angled relationship to the second fold segment 56 during opening procedure; and, overlays such remaining segment 56 as tear strip 30 is
  • Opener 44 overlays both folded segments and a panel portion leading to chuck wall 22; neither the retained tear strip nor opener obstruct, in any way, pour opening 62 (as seen from both FIGS. 4 and 5) .
  • Opener 44 is held integrally with the sheet metal of tear strip 30 by unitary rivet head 64 (FIG.3).
  • Working (output) end 66 of opener 44 is in place contiguous to arcuate-shaped scoreline 32; and, handle (input) end 42 overlays recessed panel portion 40 prior to opening.
  • handle end 42 After opening, such handle end 42 abuts the chuck wall 22 of the end closure (FIG. 4); that is, in the circular embodiment illustrated, such folded disposition of handle 42 is diametrically opposite to that portion of panel 28 at which rupture of the tear strip 30 is initiated.
  • sheet metal opener 44 provides a means for gripping at its handle end, such as 68 which can be a ring-pull opening as shown, or a solid panel.
  • a rivet button aperture 69 is in recessed opener panel 70.
  • Strength can be augmented by ribs 71,72; but, the overall longitudinal and lateral strength of the illustrated opener is, in addition to thickness gage considerations, greatly supplemented by edge curling of the sheet metal; sheet metal gage for flat rolled steel can generally be in the range of about 100 to 150 #/bb when edge curling is used.
  • edge curling which tucks the raw edge metal within the curl
  • the internal periphery (78) edge metal of ring-pull opening 68 is also curled.
  • Curled edge metal along the lateral sides is illustrated at 80 and 82 of FIG. 7.
  • the sheet metal curl terminates contiguous to working end 66 of opener 44 where a "gull-wing" configuration is symmetrical about vertical centerline 84.
  • Each such gull-wing 88,90 extends from chisel point edge 92 toward lateral side curled edge metal 80, 81, respectively; such gull-wings terminate at pivot- points (curl termination points) 82,83, respectively.
  • Such chisel-point and gull-wing configurations are formed subsequent to curling edge metal around substantially the remaining periphery of the opener 44. Movement of metal at such curl-free end 66 to a level below that of the edge curls 80, 81 (i.e. forming the gull-wing) is carried out by draw tooling to form the centered slot 96 (FIGS. 3,6 and 7) which extends between recessed opener panel 70 and the chisel-point 92 located where the central longitudinal axis intersects working end 66.
  • chisel-point 92 is disposed toward the panel contiguous to the mid-point of scoreline 32.
  • chime seam metal 21 at the outer periphery of the end closure 20, leads into vertically-oriented chuck wall 22 which extends around the full periphery of a circular (or other configurations such as rectangular or oval) panel.
  • Chuck wall 22 extends into countersink indentation 24 which provides buckle resistance when the panel is subjected to internal pressure.
  • An important concept of the present invention is the importance of avoiding flexing of, or play in, the sheet metal panel as lever-action initial puncture and scoreline rupture are taking place. It has been found that flexing, that is "play” or "give” in the sheet metal, has a tendency to put scoreline residual sheet metal under tension for purposes of rupturing. Breaking such metal against its tensile strength is one of the most difficult ways to rupture sheet metal because of inherent tensile strength characteristics of the primary metals used in can manufacture.
  • this concept of preventing such flexing of the sheet metal endwall panel is achieved by locating externally projecting bead 25 inboard of and contiguous to countersink indentation 24; force requirements for initial puncture and rupturing are decreased as much as 30% by this feature - which is a significant factor in opening ends for small diameter containers.
  • Projecting bead 25 changes how the sheet metal of panel 28 is presented for opening and how such sheet metal reacts to puncturing and/or rupturing under lever action and/or severing by a tearing action. Placement of projecting bead 25 makes the endwall sheet metal more rigid; flexing of the sheet metal, contiguous to tear strip scoring is substantially eliminated. The prior "give” or “play” in sheet metal panels without such means, which increased the need to "break” the residual metal under tension, is substantially eliminated.
  • Such rigid presentation of the sheet metal provides rapid lever-action rupture - first by puncturing at the mid-point of scoreline 32, with rivet 64 acting as the fulcrum and continuing to severe along such arcuate portion of scoreline 32.
  • Such class 1 lever action occurs with a resonating sound because of the rigidity of the metal.
  • the arcuate movement (due to lifting) of the handle end inherently continues so that the class 1 lever action promptly becomes a class 2 lever tearing action (along scorelines 34,35) as the pivot point contacts 82,83 become the fulcrum; such point contacts 82,83 constitute a moving fulcrum; they move along the edges of opening 62 as indicated by lines 104,106 of FIGS. 4,5.
  • Such class 2 lever action severance of the scoreline legs occurs in a rapid smooth transition at or about completion of class 1 lever-action rupture of arcuate-shaped scoreline 32 which occurs at about 25" of arcuate movement of the handle end 42 of opener 44; the class 2 severance of scoreline legs 34,35 is completed at an angular movement of about 75 "* approaching vertical (perpendicular to the plane of panel 82) orientation for opener 44.
  • Opener 44 is about 15 "" from a vertically upright position as scoreline leg tearing is completed. Handle end 42 of opener 44 is then merely pushed or pulled backwardly in the direction of its original position. Both fold lines - for the lead segment (across transverse section 54) and for the trailing segment (across the terminal ends of the scoreline at 38) were started during the opening procedure so that both folded segments of the tear strip move readily into an overlaying relationship as they are stored, with the opener 44, in parallel relationship to panel 28. Relative positioning before opening (FIGS. 9 and 10) followed by the actions of FIG. 11-13 leads to final stored positioning (FIGS. 4,14).
  • chuck wall 22 extends into countersink indentation 24.
  • Externally projecting bead 25 extends above the level of panel 28 as indicated; scoreline residual metal 110 is at the mid-point of arcuate-shaped scoreline 32.
  • the chisel-point 92 is located above such mid-point; gull-wings, as earlier described, lead to the main level of the opener 44 which extends along its sides from pivot points 82,83.
  • FIG. 11 the arcuate-shaped scoreline 32 is being ruptured by class 1 lever action of opener 44, ' moving about rivet 64 as a fulcrum, as a result of arcuate movement (through about 25 "" ) of handle end 42 externally away from panel 28.
  • class 1 lever action of opener 44 ' moving about rivet 64 as a fulcrum
  • arcuate movement through about 25 ""
  • scoreline legs 34,35 are ruptured by class 2 lever action as the pivot-point contacts 82,83 slide along the rigid panel adjacent to lateral sides of the pour opening 62.
  • opener 44 can be readily returned toward its original level. As such handle end 42 of opener 44 is returning toward panel 28, folding of the two longitudinal segments of the tear strip in overlaying relationship is completed. The opener 44 overlays such segments with each being substantially parallel to panel 28. Handle end 42 fits within the chuck wall 22 as shown in FIGS. 4 and 14. To achieve such an interfitting relationship, the length of the opener 44 is coordinated with the length of the tear strip 30, positions of the rivet 62 and rivet aperture 69, and the inter-folding relationship of the tear strip segments; along with other factors, such as shell forming dimensions in a circular end closure, which have to be coordinated to achieve a workable easy-access structure.
  • a 202 (2-2/16" diameter) can body, having a necked-in 201 (2-1/16") open end, the following dimensions are typical:
  • Typical flat rolled steel gages for such end closure are between about 75 and 110 lbs/bb with residual metal of the tear strip scoreline means being between about .001" and .0035".
  • .008" gage sheet metal was used; residual metal measured .0009" at scoreline 32, and residual metal was measured up to .0016" along scoreline legs 34,35; such specific embodiment for a 202 can body withstood nominal 100 psi internal pressure without leakage or bursting along such tear strip scorelines.
  • the preferred flat rolled steel substrate for end closures for containers for comestibles is electro- lytically treated on both substrate surfaces; for example application of a metallic coating, such as chrome oxide or chrome and chrome oxide, which acts as a surfactant to facilitate adhesion, on each such surface of an organic coating with lubricant (both of which must be approved by the FDA for use with products for human consumption) .
  • a metallic coating such as chrome oxide or chrome and chrome oxide, which acts as a surfactant to facilitate adhesion, on each such surface of an organic coating with lubricant (both of which must be approved by the FDA for use with products for human consumption) .
  • Typical flat rolled aluminum substrates are in the range of about .012" to about .015" with residual scoreline metal of about .004" to about .008"
  • sheet metal opener 44 Special features of sheet metal opener 44 are achieved by a progression of fabricating stages, numbered 111 through 118 which are carried out on an elongated sheet metal strip 119. Initially registration holes 121,123 are punched out of the strip using punch and die 15 tooling and opener panel 70 (shown in FIG. 6) is shaped by draw process tooling in first stage 111.
  • conventional punch and die operations can be used for punching out portions of the sheet metal; and, conventional draw processing operations can be used; of course, opposing tooling members of each are designed to provide the shaping taught by the invention.
  • the next sequential stage 112 comprises punching out opening 125 which is a preforming step in providing a ring pull.
  • rivet button opening 69 (FIG. 6) is punched out of panel 70 followed by punch-out of a "bat-winged" configuration opening 126 in stage 114.
  • Such angled "bat-wing” edges define working end 66 metal edge portions which will be formed into chisel-point 92 and gull-wings 88,90 (FIG. 7).
  • stage 115 cut lines 127,129 for preforming lateral sides 75,76 of opener 44 are made; and, curvilinear cut line 131 is made for preforming of the handle end 42 of opener 44 (shown in FIG. 6) .
  • the resulting partially precut work product for opener 44 of stage 115 remains part of strip 120 by means of unitary connector joints 133,135 (between small diameter punch holes) , which hold the work product through remaining stages for completion or near-completion (as selected) of opener 44 in a progression of stages while part of elongated strip 119.
  • Edge metal rolls 80,82 along lateral sides 75,76 are formed by progressively curling of edge metal in stages (116 and 117) .
  • the edge metal is also curled for handle end 42; and curled metal extends around the internal periphery (78 in FIG. 6) in a ring-pull embodiment.
  • Connector joints 133,135 (stage 117 and following stages) hold the work product for such progressive stages.
  • Edge curling in which raw edge metal is tucked on the inside of the curl, is known commercia1ly.
  • Further shaping operations for the opener are carried out in 115 through 118 (while in strip form) in addition to edge curling. For example, draw process placement of the chisel-point is initiated in stage 116; and/or other steps such as forming four-pronged "rosette" 140 about opening 70 can be carried out in stage 118.
  • Draw processing of the working end 66 initiated in stage 116 must be completed in the progression or separately to form gull-wings 88,90 and position the chisel-point 92, as shown in FIGS. 7 and 8, to facilitate initial rupturing operations.
  • knife-edge chisel-point 92 is located at the apex of gull-wings 88,90, at a level spaced (toward the panel and scoreline to be severed) from curled edge metal pivot points 82,83.
  • Such placement along slope 96 is completed using draw forming tooling.
  • WIDTH at pivot points 82,83 .35" at widest dimension for ring pull opening 68 .90"
  • the opener 44 can be pushed or pulled into stored position.
  • opener 44 would maintain the solid panel (free of ring opening) presented in stage 111 of FIG. 15 by omitting the ring-pull punch out of stage 112.
  • Specific materials, dimensions, and configurations have been set forth for purposes of describing a specific embodiment of the invention. However, in the light of such teachings, other sizes, configurations and/or dispositions can be devised while still relying on and utilizing concepts of the invention; therefore, for purposes of determining the scope of the present invention, reference shall be made to the appended claims.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Devices For Opening Bottles Or Cans (AREA)

Abstract

On a doté une fermeture terminale (20) en tôle d'accès facile ainsi qu'un système d'ouverture solidaire (44) de caractéristiques de ligne de repère, de profil et de renforcement. Un panneau de parois terminales (28) est formé de manière à éliminer la flexion de la tôle pendant l'ouverture du métal résiduel du moyen de ligne d'affaiblissement définissant une bande déchirable (30) en forme de U. Ladite bande déchirable est orientée de manière que son extrémité fermée (8) de forme arquée est contiguë à la périphérie dudit panneau de parois terminales, des pattes (34, 35) à ligne d'affaiblissement étant orientées vers une partie se trouvant au niveau de son centre géométrique (26). Le système d'ouverture présente un point de cisèlement (92) au niveau de son extrémité de travail (66), destiné à entamer la rupture de ladite ligne d'affaiblissement de forme arquée sous l'effet d'une action de levier de classe 1; suivie par le pivotement du système d'ouverture autour de points d'appui (82, 83) venant chacun au contact du panneau sur chaque côté de l'ouverture (62), afin de rompre lesdites pattes à ligne d'affaiblissement sous l'effet d'une action de levier de classe II. Le système d'ouverture et la bande déchirable sont maintenus et stockés à l'extérieur du panneau, sans obstruer l'ouverture (62).
PCT/US1990/007588 1989-12-21 1990-12-20 Structures de conteneurs en tole d'acces facile WO1991009784A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US45436189A 1989-12-21 1989-12-21
US454,361 1989-12-21

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WO1991009784A1 true WO1991009784A1 (fr) 1991-07-11

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EP (1) EP0460200A4 (fr)
JP (1) JPH05500199A (fr)
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Cited By (6)

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ES2047428A2 (es) * 1991-09-27 1994-02-16 Everycel Sa Sistema de formacion y colocacion de operculos de cierre en envases.
WO1994013544A1 (fr) * 1992-12-05 1994-06-23 Carnaudmetalbox Sa Extremite a ouverture facile
WO1994019246A2 (fr) * 1993-02-18 1994-09-01 David Robert Sergeant Couvercle de fermeture d'un contenant
GB2275248B (en) * 1993-02-18 1996-12-04 David Robert Sergeant Container end closure
WO1999001243A1 (fr) * 1997-07-04 1999-01-14 Crown Cork & Seal Technologies Corporation Fabrication d'une tirette
WO2000071430A1 (fr) * 1999-05-21 2000-11-30 Loureiro Benimeli Fermin Jaime Conserve amelioree

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KR102661370B1 (ko) 2014-08-01 2024-04-25 캐논 가부시끼가이샤 토너 카트리지 및 토너 공급 기구
CN106964707B (zh) * 2017-03-23 2018-09-28 广东英联包装股份有限公司 一种实现快速更换不同环型模具的方法

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US4211335A (en) * 1979-06-21 1980-07-08 American Can Company Fracture resistant retained lever tab and method of manufacture
US4399925A (en) * 1982-04-16 1983-08-23 Van Dorn Company Pouring spout steel can end construction
US4781303A (en) * 1988-03-25 1988-11-01 Wells Robert A Container with a non-removable opening tab apparatus
US4877129A (en) * 1988-06-15 1989-10-31 Wells Robert A Reclosable self-opening can end

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2047428A2 (es) * 1991-09-27 1994-02-16 Everycel Sa Sistema de formacion y colocacion de operculos de cierre en envases.
WO1994013544A1 (fr) * 1992-12-05 1994-06-23 Carnaudmetalbox Sa Extremite a ouverture facile
WO1994019246A2 (fr) * 1993-02-18 1994-09-01 David Robert Sergeant Couvercle de fermeture d'un contenant
WO1994019246A3 (fr) * 1993-02-18 1994-10-13 David Robert Sergeant Couvercle de fermeture d'un contenant
GB2275248B (en) * 1993-02-18 1996-12-04 David Robert Sergeant Container end closure
CN1041188C (zh) * 1993-02-18 1998-12-16 戴维·罗伯特·萨君特 容器端盖
US5950858A (en) * 1993-02-18 1999-09-14 Sergeant; David Robert Container end closure
WO1999001243A1 (fr) * 1997-07-04 1999-01-14 Crown Cork & Seal Technologies Corporation Fabrication d'une tirette
WO2000071430A1 (fr) * 1999-05-21 2000-11-30 Loureiro Benimeli Fermin Jaime Conserve amelioree

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Publication number Publication date
EP0460200A1 (fr) 1991-12-11
JPH05500199A (ja) 1993-01-21
EP0460200A4 (en) 1993-12-15

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