EP0043786B1 - Abzugslasche für leicht zu öffnende Behälter und Verfahren zu ihrer Herstellung - Google Patents

Abzugslasche für leicht zu öffnende Behälter und Verfahren zu ihrer Herstellung Download PDF

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Publication number
EP0043786B1
EP0043786B1 EP81420100A EP81420100A EP0043786B1 EP 0043786 B1 EP0043786 B1 EP 0043786B1 EP 81420100 A EP81420100 A EP 81420100A EP 81420100 A EP81420100 A EP 81420100A EP 0043786 B1 EP0043786 B1 EP 0043786B1
Authority
EP
European Patent Office
Prior art keywords
tab
tongue
panel
pull
ring
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
Application number
EP81420100A
Other languages
English (en)
French (fr)
Other versions
EP0043786A1 (de
Inventor
René Meneghin
Ernest Hurther
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.)
Albea Tubes France SAS
Original Assignee
Cebal SAS
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 Cebal SAS filed Critical Cebal SAS
Priority to AT81420100T priority Critical patent/ATE7775T1/de
Publication of EP0043786A1 publication Critical patent/EP0043786A1/de
Application granted granted Critical
Publication of EP0043786B1 publication Critical patent/EP0043786B1/de
Expired 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
    • 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

Definitions

  • German patents DE 629 289 or American patents US 2085200 and 3232474 show that it is possible to tear the lid and tear off a panel by printing, in the thickness of the lid, a deep incision line carefully determined.
  • the initial perforation of the cover, then its tearing along the line of incision can be further facilitated by the use of a gripping tab fixed to the panel.
  • the part of the tongue which is used as a perforating tool is hereinafter referred to as the front part.
  • This front part generally comprises, at its front end, a perforation spout, most often at a sharp angle, as shown in DE 629 289 or US 3,232,474.
  • the tongue most often comprises a gripping means such as a ring, this unless it is itself in the form of a ring.
  • the tongue is fixed to the panel by a connecting means, most often, a rivet located between the two ends of the tongue, which allows at the time of the initial perforation to use the tongue as a lever and multiply the effort exerted by the consumer.
  • the tongue is connected in a sufficiently flexible manner to the panel.
  • the body of the tongue is preferably connected to the connecting means by a flexible tab which works in the manner of a hinge and allows a certain displacement of the tongue relative to the surface of the panel.
  • the object of the invention is a gripping tab connected by a connecting means to a panel removable from a cover (2) of an easy-opening box, this by means of a tab, characterized in the tab is wound in a spiral around the front transverse part of the body of the tongue before extending rearward to the connection means, the tab being wound in the opposite direction to that of the rotation of the tongue with respect to its front part during the opening operation of the box, this winding giving flexibility to the tongue and producing, at the start of the opening operation, stiffening of the front part of the body of the tongue, thanks to the tightening of said winding around said front part.
  • the spiral winding of the invention gives flexibility to the tongue instead of contributing to its rigidity and, at the start of the opening operation, this winding produces, thanks to its tightening, a stiffening of the front part of the tongue.
  • the tongue is usually made from a flat blank cut from a thin sheet. This blank is then ribbed to give the tongue the desired rigidity.
  • the tongue generally has the shape of a ring, which facilitates its gripping; it can also have a general shape of a straight lever. In this case, the connecting tab must be split in the form of two symmetrical lateral tabs starting from the front part of the tongue; this will ultimately have a T shape.
  • the body of the tongue and the connecting tab are made from the same blank cut from a sheet. It is given, by successive stamping and folding passes, the desired final shape.
  • the tab is thus formed in a metal strip in the extension of that constituting the body of the tongue.
  • the tab In all cases, the tab must wrap in a spiral around the anterior part of the body of the tongue in the direction which causes its winding to tighten and, consequently, to reinforce this winding during the operation of perforating the cover. .
  • To perforate the cover and then tear off the panel pull on the tab by lifting it from the rear and thus rotating it in an axial plane around its front part. Also, so that the winding of the tab tends to tighten during the opening of the box, the tab must be initially wrapped around the front part of the body of the tongue in the opposite direction to that of the rotation of the tongue relative to its front part at the start of the opening of the box.
  • the rib formed in the blank to give its shape and its rigidity to the tongue must be produced with a curvature in continuity with that of the winding of the tab.
  • the concavity of the rib stiffening the front part of the tongue is thus on the same side of the surface of the sheet forming the tongue as the concavity of the tab wound in a spiral.
  • the tab comes from a metal strip which extends radially from the annular flat blank.
  • This strip is normally a radial strip reserved inside the blank recess and oriented towards its center.
  • the tab is wrapped around the portion of the blank to which it is connected, while this portion of the blank is itself bent to form a stiffening rib at the front part of the body of the tongue. It is wound by passing first under the anterior part of the body of the tongue, then returning backwards, passing over the anterior part.
  • each of the two lateral half tabs is also wrapped around the crossbar of the T, this in the opposite direction to the rotation of the tongue around this transverse strip during the perforation of the box which initiates the tearing of the panel.
  • the central bar of the T is used as a lever.
  • the connection means between cover and tongue is here a rivet (3).
  • the tongue (1) essentially consists of a body in the form of an O-ring (5) made of rolled sheet metal and a tab (6).
  • the tab (6) is wound in a spiral by making a substantially turn around the transverse front part (7) of the ring (5) before extending towards the location of the rivet (3).
  • the ring (5) and the tab (6) are formed from the same flat hollowed-out blank (9), shown in FIG. 3. This blank (9) is made of aluminum; it has a thickness of 0.4 mm.
  • the periphery of the blank (9) is curved in the shape of a torus as shown in fig. 1, this to give the body of the tongue the desired rigidity.
  • the tab (6) is wrapped around the front part (7) of the ring.
  • the connection slot (10) of this torus is located below the tab.
  • a perforation spout (11) is formed by stamping the part of the tab (6) located at the front of the tongue.
  • the pressure exerted by the spout (11) on the surface of the cover is substantially equal to the tensile force (F) exerted by the consumer multiplied by the coeff icient d D.
  • (D) is the length of the ring according to its axis and (d) the horizontal distance between the spout (11) and the axis (0) of the front part of the ring.
  • (D) is of the order of 25 mm, (d) of the order of 2 mm.
  • the tab (6) is in the extension of the ribbed surface forming the body of the ring (5), it is important that the bending of the periphery of the blank (9) is carried out with a dorsal at the top and its slot open (10) at the bottom.
  • the rib here in the shape of a torus, which gives its rigidity to the tongue, has at least in its front part, a curvature in continuity with that of the tab.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Cartons (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Pens And Brushes (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Closures For Containers (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)

Claims (5)

1. Abzugslasche (1), die über einen Streifen (6) über ein Verbindungsmittel mit einer abreißbaren Platte eines Deckels (2) eines leicht zu öffnenden Behälters verbunden ist, dadurch gekennzeichnet, daß
- der Streifen (6) spiralförmig, den vorderen transversalen Teil (7) des Laschenkörpers (1) umschließend aufgerollt ist, bevor er sich nach hinten bis zum Verbindungsmittel erstreckt,
- der Streifen in dem zu der Drehung der Lasche (1) während des Öffnungsvorganges des Behälters relativ zu ihrem vorderen Teil (7) entgegengesetzten Drehsinn (S) aufgerollt ist,
- wobei diese Wicklung der Lasche (1) Flexibilität verleiht und zu Beginn des Öffnungsvorganges eine Versteifung des vorderen Teils (7) des Laschenkörpers (1) dank des Festziehens dieser Wicklung um diesen vorderen Teil (7) erzeugt.
2. Lasche nach Anspruch 1, dadurch gekennzeichnet, daß
- die Lasche (1) ringförmig ist
- die Lasche ausgehend von einer ringförmigen ebenen Scheibe (9) geformt ist und
- daß Rundbiegen der Scheibe (9) mit einer zum Drehsinn (S) der Wicklung des Streifens (6) stetigen Krümmung ausgeführt ist.
3. Lasche nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, daß eine Durchstechspitze (11) durch Ausstanzen aus dem Teil des Streifens (6), der sich vor der Lasche (1) befindet, ausgebildet ist.
4. Lasche nach einem der Ansprüche 1, 2 oder 3, dadurch gekennzeichnet, daß das Mittel zur Befestigung mit der Platte eine Niete (3) ist.
5. Verfahren zur Herstellung einer Abzugslasche nach einem der Ansprüche 1, 2, 3 oder 4, dadurch gekennzeichnet, daß
a) man aus einem dünnen Blech eine ringförmige Scheibe (9), die im Inneren ihrer Aussparung einen radialen Streifen (6) aufweist, ausschneidet,
b) der radiale Streifen (6) um den Teil der Scheibe (9) aufgerollt wird, an den er sich anschließt, während der Rand der Scheibe (9) durch aufeinanderfolgende Durchgänge torusförmig mit einer zur Krümmung (S) des Streifens (6) stetigen Krümmung umgebogen wird.
EP81420100A 1980-07-09 1981-07-07 Abzugslasche für leicht zu öffnende Behälter und Verfahren zu ihrer Herstellung Expired EP0043786B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81420100T ATE7775T1 (de) 1980-07-09 1981-07-07 Abzugslasche fuer leicht zu oeffnende behaelter und verfahren zu ihrer herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8015578 1980-07-09
FR8015578A FR2486495A1 (fr) 1980-07-09 1980-07-09 Languette d'arrachage pour boite a ouverture facile et son procede de fabrication

Publications (2)

Publication Number Publication Date
EP0043786A1 EP0043786A1 (de) 1982-01-13
EP0043786B1 true EP0043786B1 (de) 1984-06-06

Family

ID=9244147

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81420100A Expired EP0043786B1 (de) 1980-07-09 1981-07-07 Abzugslasche für leicht zu öffnende Behälter und Verfahren zu ihrer Herstellung

Country Status (13)

Country Link
US (1) US4383621A (de)
EP (1) EP0043786B1 (de)
JP (1) JPS6010940B2 (de)
AT (1) ATE7775T1 (de)
CA (1) CA1164817A (de)
DE (1) DE3163974D1 (de)
DK (1) DK302681A (de)
ES (1) ES260046Y (de)
FR (1) FR2486495A1 (de)
GR (1) GR75279B (de)
IE (1) IE51376B1 (de)
MA (1) MA19208A1 (de)
PT (1) PT73337B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4496048A (en) * 1982-12-13 1985-01-29 Blackbourn, Inc. Video cassette carrier
JPS6127821U (ja) * 1984-07-24 1986-02-19 東洋製罐株式会社 容易開封用プルタブ
JPH01266331A (ja) * 1988-04-14 1989-10-24 Aisin Chem Co Ltd ダンパー
JPH02203034A (ja) * 1989-01-31 1990-08-13 Sugatsune Ind Co Ltd 粘性流体を用いた多板式ダンパー
DE102013104226B4 (de) * 2013-04-25 2015-09-10 Jürgen Sooth Wiederverschließbare Dosenstirnwand, Stirnwandeinheit und Dose
ES1227529Y (es) * 2019-01-17 2019-06-21 Grupo Conservas Garavilla S L Tapa de cierre para un recipiente de facil apertura

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE629289C (de) * 1936-04-27 Alfonso Sada Befestigung eines doppelarmigen, hochschwenkbaren OEffnungshebels am Deckel einer Konservendose
US2085200A (en) * 1933-03-08 1937-06-29 Transitoria Ab Closed container such as preserving cans
US3232474A (en) * 1963-09-24 1966-02-01 Aluminum Co Of America Opening means for sealed containers
US3485411A (en) * 1968-04-18 1969-12-23 Fraze Ermal C Tab for easy-opening container
FR2074598A1 (de) * 1970-01-08 1971-10-08 Cebal Gp
US3967750A (en) * 1974-09-16 1976-07-06 Reynolds Metals Company Easy-open wall
US4030631A (en) * 1975-08-27 1977-06-21 Ermal C. Fraze Easy-open ecology end
US4015744A (en) * 1975-10-28 1977-04-05 Ermal C. Fraze Easy-open ecology end
US4150765A (en) * 1977-11-10 1979-04-24 The Continental Group, Inc. Tab construction for easy opening container
US4148410A (en) * 1978-01-30 1979-04-10 Ermal C. Fraze Tab for easy-open ecology end
US4183445A (en) * 1978-11-09 1980-01-15 The Continental Group, Inc. Tethered tab with changeable bend line

Also Published As

Publication number Publication date
PT73337A (fr) 1981-08-01
ES260046U (es) 1982-03-16
JPS5755854A (en) 1982-04-03
GR75279B (de) 1984-07-13
JPS6010940B2 (ja) 1985-03-22
FR2486495B1 (de) 1984-01-06
ATE7775T1 (de) 1984-06-15
EP0043786A1 (de) 1982-01-13
FR2486495A1 (fr) 1982-01-15
MA19208A1 (fr) 1982-04-01
DK302681A (da) 1982-01-10
US4383621A (en) 1983-05-17
CA1164817A (fr) 1984-04-03
IE811534L (en) 1982-01-09
ES260046Y (es) 1982-11-16
IE51376B1 (en) 1986-12-10
DE3163974D1 (en) 1984-07-12
PT73337B (fr) 1982-09-01

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