EP1905698B1 - Récipient doté d'un couvercle à ouverture facile, couvercle à ouverture facile ainsi qu'anneau de couvercle à ouverture facile - Google Patents

Récipient doté d'un couvercle à ouverture facile, couvercle à ouverture facile ainsi qu'anneau de couvercle à ouverture facile Download PDF

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Publication number
EP1905698B1
EP1905698B1 EP07018875A EP07018875A EP1905698B1 EP 1905698 B1 EP1905698 B1 EP 1905698B1 EP 07018875 A EP07018875 A EP 07018875A EP 07018875 A EP07018875 A EP 07018875A EP 1905698 B1 EP1905698 B1 EP 1905698B1
Authority
EP
European Patent Office
Prior art keywords
tear
lid
open lid
container
cut edge
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.)
Not-in-force
Application number
EP07018875A
Other languages
German (de)
English (en)
Other versions
EP1905698A1 (fr
Inventor
Marcel Oberholzer
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.)
Soudronic AG
Original Assignee
Soudronic AG
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 Soudronic AG filed Critical Soudronic AG
Publication of EP1905698A1 publication Critical patent/EP1905698A1/fr
Application granted granted Critical
Publication of EP1905698B1 publication Critical patent/EP1905698B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65D17/06—Integral, or permanently secured, end or side closures
    • B65D17/08—Closures secured by folding or rolling and pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/50—Non-integral frangible members applied to, or inserted in, preformed openings, e.g. tearable strips or plastic plugs
    • B65D17/501—Flexible tape or foil-like material
    • B65D17/502—Flexible tape or foil-like material applied to the external part of the container wall only
    • 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
    • B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
    • B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
    • B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
    • B65D7/36—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by rolling, or by rolling and pressing

Definitions

  • the invention relates to a container with a tear-open lid. Furthermore, the invention relates to a tear-open lid for a container and a tear-open lid ring, as used to form a tear-open lid. Furthermore, the invention relates to a method for producing a container with a tear-open lid and a method for producing a tear-open lid or a tear-open lid ring.
  • lid for can or can-like packaging or container as the container on top of the permanently attached metal lid, which form a removal opening, the up to the first use of the package contents by a heat-seal applied, tearable film, in particular metal foil or Composite foil, is closed.
  • An additional, arranged over the metal lid lid made of plastic makes the container during the period of use for the contents again closed.
  • FIGS. 1 to 8 show such a container and serve to illustrate manufacturing steps in the production of such cover according to the prior art.
  • FIG. 2 shows (only cut-to-length) stacked metal lid blanks 20 as an example of lid parts.
  • These blanks 20 are for example round metal discs of eg 11 cm diameter. Of course, other basic shapes, such as square, oval or rectangular discs and other diameters are readily possible.
  • the blanks 20 have already been preformed in a processing machine, not shown, at its edge, as described later FIG. 2 is explained. This edge forming is suitable for a rabbet joint of lid and container sump.
  • FIG. 2 only one sector of the entire disk is shown to simplify the drawing.
  • an opening 26 is punched into the disc by punching with upper and lower tool, which in FIG. 3 can be seen, in which the edge of the opening is denoted by 21 and the punched round disc with 27.
  • a pulling of the edge 21 is down, whereby the in FIG. 4 shown course 22 of the edge is achieved.
  • the annular blank blanks 20 now move into another processing station, in which a film 25 is placed over the opening 26 of the lid 20 and fixed there by heat sealing, which in the FIGS. 5 and 6 is apparent.
  • the metal foil 25 is provided in a known manner on its underside with a plastic layer.
  • the required film blank 25 is usually punched out of a wide film web and placed over the central recess or cover opening of the annular disc and the film is pressed by heat sealing at the edge of the round recess of the part 20 under heat, so that the film 25th is sealed to the lid 20 by melting and subsequent cooling of the plastic layer.
  • a cooling processing station can be provided for cooling.
  • the film 25 with an embossment 24th FIG. 7
  • Different crimping forms can be provided.
  • the requirements that are placed on such container lid correspond to those who are placed on conventional covers for sheet metal containers or other containers or packaging body.
  • the sheet metal from which the sheet metal covers or the cover rings made of sheet metal are coated coated.
  • the coating of the sheet is known to the person skilled in the art; It usually consists of polyethylene terephthalate (PET) on the inner side of the container or a high-strength thermo-lacquer which is capable of crimping and also withstands aggressive products over the required storage period of sometimes several years.
  • PET polyethylene terephthalate
  • PP polypropylene
  • a paint with PP particles although such a coating is only reduced flanging (ie mechanically durable), since preferably PP is used as the adhesive or sealing medium of the tear-open, which in turn in sufficient quality only adheres to a PP coated surface.
  • PP polypropylene
  • Both the PET and PP coatings have been tried and tested on an industrial scale.
  • a raw cut edge on the inside of the cover ring is at best not problematic with dry contents and short storage time; As a rule, however, corrosion is the result, which undesirably affects the contents and, for example, can affect the taste of food.
  • This sequence is known to be encountered, in that the lid ring is provided on its inside with a curled edge area at the cutting edge, a so-called "retort-curl". As a result, the raw cut edge is covered by a surface region of the cover ring and is usually no longer accessible to the contents. Disadvantages of this solution are the comparatively high production costs, which occur in particular on the side of the tool.
  • the retort curl can not be produced today with the required high and uniform quality in a large series, in mass production. Only slight deviations in the production lead to the irregular formation of the retort curl in such a way that the cut edge is not reliably covered. Even a slight change in the cross section of the rolled-up wall section results in the cutting edge not resting continuously on the corresponding surface region of the cover ring, so that the filling material can reach the uncoated cut edge.
  • EP-A-0 090 957 suggests the edge area to bend the lid opening to the outside of the lid, whereby the cutting edge comes to rest outside the Rudgutraumes of the container. But this complicates the application of the tear-off.
  • the cutting edge lies in the fastening region of the lid on the bottom of the container and thus lies adjacent to the upper edge of the lid, it is not exposed to contact with the contents of the container.
  • the cut edge is thereby trapped between the coated hull and the coated lid. This results in easily manufacturable way to protect the cutting edge against corrosion.
  • the lid is connected to the container sump by means of a fold. It is preferred that the cut edge lies with the unfolded fuselage inside, so that the cut edge does not come to lie in the actual folded area. This allows the production of the fold on conventional devices for forming the fold. In a further embodiment, the cut edge can be laid so far in the fold area that it lies in the hinge connection itself; In this case too, production with conventional or at most slightly modified folding tools may be possible.
  • the cut edge is covered by a mass, which is preferably the sealant of the rabbet joint.
  • the bending radius at the lid opening is greater than or equal to 1 mm. This chipping or chipping the coating of the cover ring can be safely avoided.
  • the invention is further based on the object to provide a Cosmeticreissdeckel or a Materials Reissdeckelring for the inventive container.
  • the invention relates to a method for producing a container with a tear-open lid or a tear-open lid. These methods are defined by the features of claims 11 and 13, respectively.
  • FIG. 1 shows a container 1 with a hull 4 and with a Aufreissdeckel 2, the lid opening is closed by the tear-open film 25. This is provided with a tab 28 for tearing the film from the lid ring.
  • FIGS. 2 to 8 show the procedure of the prior art, which has already been explained above and which can also be provided as a preferred example of the formation of a tear-open lid or Aufreissdeckelringes invention, with the exception of the inventive aspect of the protection of the free cutting edge, in the inventive embodiments with the reference numeral 3 is designated. In this sense, reference is made to the formation of the tear-open on the above description of the prior art and this is taken over here.
  • the container further comprises a bottom cover 5, which may be designed in particular as a metal floor attached by means of a fold on the hull.
  • FIG. 9 shows the formation of the container-side lid edge for the seam connection
  • FIG. 10 shows a corresponding hinge connection of the lid and hull, as is known in the art.
  • FIG. 9 is only a part of the lid 2 in cross section visible.
  • This embodiment of the lid has, as in the Figures 2-8 , a folding edge 30 (seaming panel), which is on the cover outside with a curl 31 (curl) is provided.
  • a sealing compound 8 is provided at the seam edge.
  • the lid 2 has a seam radius 32 (seaming panel radius), with which the seam edge in the lid core wall 34 (chuck wall) merges, which core wall of the core depth radius 33 follows (chuck wall radius).
  • the radii mentioned with the lid core wall give the lid core depth d (countersink depth).
  • FIG. 11 Now shows a preferred embodiment of the inventive container 1 or Aufreissdeckels 2 or Aufreissdeckelringes. Again, a part of the container and the lid is shown. It is apparent that unlike the lid of the 20 characters 2-8 According to the prior art, the cutting edge 3 of the lid is guided into the fastening region of the lid 2 on the fuselage 4. This is shown for the preferred embodiment as a rabbet joint.
  • the connection between the cover 2 and the fuselage 4 could, however, also be carried out in a purely mechanical manner by positive locking and / or frictional engagement or gluing or hot-sealing or a combination of such fastening types in other ways.
  • FIG. 11 shows a greatly enlarged representation.
  • the length of the bent-back part from the lid opening or removal opening 26 into the fastening or folding area 6 is eg 7.8 mm.
  • the cutting edge 3 rests with its one corner on the inside of the fuselage 7 and is acted upon by the core wall 34 on the other side of the cutting edge 3, so that a complete protection of the cutting edge 3 results. This is guided by the return in the mounting portion 6 up to the seaming edge 30, but not involved in this example in the actual Falztagen with fuselage hook and lid hook.
  • the cutting edge 3 could be guided over the trunk hook radius 30, so that the cutting edge 3 is retracted into the fold 6.
  • the in FIG. 11 Sealant 8 not shown provided such that it reaches the cutting edge 3 and this also covers.
  • a flange 40 directly adjacent to the bending edge 13, which is formed from the double sheet material 41 and 42 of the lid 2.
  • This embodiment which results from returning the cut edge into the fastening region 6, is advantageous for the sealing of the tear-open film 25, since more heat energy can be introduced into the double flange, particularly in the case of heating by induction. Since there is usually a polypropylene coating due to the return on the underside of the flange, attention must be paid to the design of the lower heat sealing head, in which this e.g. with a non-stick coating to prevent sticking to the sealable polypropylene coating.
  • FIG. 12 shows a further embodiment in which the bend 43 is carried out at the edge of the lid opening 26 with a radius R, which is preferably greater than about 1 mm. In this way, splintering of the PP coating during bending is reliably avoided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Containers Opened By Tearing Frangible Portions (AREA)

Claims (13)

  1. Récipient (1) comprenant un corps de récipient (4) et un couvercle à ouverture facile (2, 28) avec un anneau de couvercle à ouverture facile en métal, formant l'ouverture de prélèvement (26) du récipient, et une feuille à ouverture facile (25), fermant l'ouverture de prélèvement (26) du couvercle à ouverture facile caractérisé en ce que l'arête de coupe (3) de l'ouverture de prélèvement (26), obtenue lors de l'estampage de l'anneau de couvercle à ouverture facile pour former l'ouverture de prélèvement, se situe dans la zone de fixation (6) du couvercle sur le corps de récipient (4) et est enfermée entre le corps de récipient revêtu et le couvercle à ouverture facile revêtu.
  2. Récipient selon la revendication 1, caractérisé en ce que le couvercle à ouverture facile (2) est raccordé au corps de récipient (4) au moyen d'une sertisseuse (6).
  3. Récipient selon les revendications 1 ou 2, caractérisé en ce que l'arête de coupe (3) se situe sur la face intérieure (7) du corps.
  4. Récipient selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'arête de coupe (3) se situe entre la face intérieure (7) du corps et la paroi de bord (34) du couvercle.
  5. Récipient selon la revendication 2, caractérisé en ce que l'arête de coupe se situe dans la sertisseuse (6).
  6. Récipient selon l'une quelconque des revendications précédentes 1 à 5, caractérisé en ce que l'arête de coupe (3) est recouverte par une masse (8) qui est, de préférence, la masse d'étanchéité d'un assemblage par sertissage du couvercle à ouverture facile avec le corps de récipient.
  7. Récipient l'une quelconque des revendications 1 à 6, caractérisé en ce que le rayon de courbure du bord de couvercle (43) au niveau de l'ouverture de prélèvement (26) est supérieur ou égal à 1 millimètre.
  8. Couvercle à ouverture facile (2) pour un récipient selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'arête de coupe (3) est ramenée jusque dans la zone de la paroi de bord (34) du couvercle de sorte que, lors de la fixation conforme du couvercle à ouverture facile sur le corps de récipient (4) d'un récipient dans la zone de fixation (6) du couvercle à ouverture facile, l'arête de coupe (3) vient s'appliquer sur le corps de récipient (4) et peut être enserrée entre le corps de récipient revêtu et le couvercle à ouverture facile revêtu.
  9. Couvercle à ouverture facile selon la revendication 8, caractérisé en ce que le rayon de courbure du bord recourbé (43), au niveau de l'ouverture de prélèvement (26), est supérieur ou égal à 1 millimètre.
  10. Anneau de couvercle à ouverture facile (2) pour un couvercle à ouverture facile selon l'une quelconque des revendications 8 ou 9, caractérisé en ce que l'arête de coupe (3) est conduite jusque dans la zone de la paroi de bord (34) du couvercle de sorte que, lors de la fixation conforme du couvercle à ouverture facile sur le corps de récipient (4) d'un récipient dans la zone de fixation (6) du couvercle à ouverture facile, l'arête de coupe (3) vienne s'appliquer sur le corps de récipient (4) et puisse être enserrée entre le corps de récipient revêtu et le couvercle à ouverture facile revêtu.
  11. Procédé de fabrication d'un récipient (1) avec un couvercle à ouverture facile (2), qui présente un anneau de couvercle à ouverture facile, formant l'ouverture de prélèvement (26) du récipient, caractérisé en ce que, dans le couvercle à ouverture facile, la formation de l'ouverture de prélèvement (26) s'effectue de manière à former une collerette double (40, 41 ,42) lorsque l'arête de coupe (3) de l'ouverture de prélèvement formée lors du découpage de l'anneau de couvercle à ouverture facile pour former l'ouverture de prélèvement est repliée, et à conduire l'arête de coupe jusque dans la zone de la paroi de bord (34) du couvercle, et que le couvercle à ouverture facile est fixé sur le corps de récipient (4) avec un assemblage par sertissage (6), l'arête de coupe étant reçue entre la paroi de bord (34) du couvercle et la face intérieure (7) de corps.
  12. Procédé selon la revendication 11, caractérisé en ce que la masse d'étanchéité (8) de l'assemblage par sertissage est prévue de sorte qu'elle recouvre l'arête de coupe (3).
  13. Procédé de fabrication d'un couvercle à ouverture facile (2) ou d'un anneau de couvercle à ouverture facile en métal, caractérisé en ce que, dans le couvercle à ouverture facile ou l'anneau de couvercle à ouverture facile, la formation de son ouverture de prélèvement (26) s'effectue de manière à former une collerette double (40, 41 ,42) lorsque l'arête de coupe (3) de l'ouverture de prélèvement formée lors du découpage de l'anneau de couvercle à ouverture facile pour former l'ouverture de prélèvement es repliée, et à conduire l'arête de coupe (3) jusque dans la zone de la paroi de bord (34) du couvercle de sorte que, lors de la fixation conforme du couvercle à ouverture facile sur le corps (4)de récipient d'un récipient dans la zone de fixation (6) du couvercle à ouverture facile, l'arête de coupe (3) vient s'appliquer sur le corps de récipient (4) et peut être enserrée entre le corps de récipient revêtu et le couvercle à ouverture facile revêtu.
EP07018875A 2006-09-29 2007-09-26 Récipient doté d'un couvercle à ouverture facile, couvercle à ouverture facile ainsi qu'anneau de couvercle à ouverture facile Not-in-force EP1905698B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH15522006 2006-09-29

Publications (2)

Publication Number Publication Date
EP1905698A1 EP1905698A1 (fr) 2008-04-02
EP1905698B1 true EP1905698B1 (fr) 2010-04-14

Family

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EP07018875A Not-in-force EP1905698B1 (fr) 2006-09-29 2007-09-26 Récipient doté d'un couvercle à ouverture facile, couvercle à ouverture facile ainsi qu'anneau de couvercle à ouverture facile

Country Status (6)

Country Link
US (1) US8413834B2 (fr)
EP (1) EP1905698B1 (fr)
AT (1) ATE464233T1 (fr)
DE (1) DE502007003452D1 (fr)
ES (1) ES2341491T3 (fr)
PT (1) PT1905698E (fr)

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US20120043324A1 (en) * 2010-08-18 2012-02-23 Silgan Containers Llc Container with Reduced, Peel-Off-Force Tear Configuration
EP2646328B1 (fr) * 2010-11-29 2016-05-11 Crown Packaging Technology, Inc. Fermeture
US8998027B2 (en) 2011-09-02 2015-04-07 Sonoco Development, Inc. Retort container with thermally fused double-seamed or crimp-seamed metal end
US9096347B2 (en) 2012-03-20 2015-08-04 Berry Plastics Corporation Stand-up Package
US10399139B2 (en) 2012-04-12 2019-09-03 Sonoco Development, Inc. Method of making a retort container
US9145251B2 (en) 2012-10-26 2015-09-29 Berry Plastics Corporation Package
US10532872B2 (en) 2014-12-08 2020-01-14 Berry Plastics Corporation Package
EP3279105A1 (fr) * 2016-08-02 2018-02-07 Amcor Flexibles Singen GmbH Bague de couvercle
EP3722226B1 (fr) * 2017-12-07 2024-01-31 Nippon Steel Corporation Couvercle thermoscellé et boîte
CN113518749A (zh) * 2019-01-02 2021-10-19 诺维尔里斯公司 容器端部封闭件衬里及其制备方法
WO2023169659A1 (fr) * 2022-03-08 2023-09-14 Soudronic Ag Emballage constitué d'un matériau en feuille métallique avec couvercle en feuille déchirable et ensemble de matériaux et procédé de production associé

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Also Published As

Publication number Publication date
EP1905698A1 (fr) 2008-04-02
PT1905698E (pt) 2010-06-24
US20080078766A1 (en) 2008-04-03
DE502007003452D1 (de) 2010-05-27
ATE464233T1 (de) 2010-04-15
US8413834B2 (en) 2013-04-09
ES2341491T3 (es) 2010-06-21

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