EP0401570A1 - Wiederverschliessbarer Deckel für Dosen oder Behälter aus Blech, Papier, Glas, Verbundwerkstoff oder Kunststoff, z.B. für Lackdosen - Google Patents

Wiederverschliessbarer Deckel für Dosen oder Behälter aus Blech, Papier, Glas, Verbundwerkstoff oder Kunststoff, z.B. für Lackdosen Download PDF

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Publication number
EP0401570A1
EP0401570A1 EP90109324A EP90109324A EP0401570A1 EP 0401570 A1 EP0401570 A1 EP 0401570A1 EP 90109324 A EP90109324 A EP 90109324A EP 90109324 A EP90109324 A EP 90109324A EP 0401570 A1 EP0401570 A1 EP 0401570A1
Authority
EP
European Patent Office
Prior art keywords
lid
predetermined breaking
container
composite material
lid according
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.)
Withdrawn
Application number
EP90109324A
Other languages
German (de)
English (en)
French (fr)
Inventor
Georg Dr. Bolte
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.)
Ardagh Metal Packaging Germany GmbH
Original Assignee
Schmalback Lubeca 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 Schmalback Lubeca AG filed Critical Schmalback Lubeca AG
Publication of EP0401570A1 publication Critical patent/EP0401570A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D17/00—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions
    • B65D17/28—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness
    • B65D17/401—Rigid or semi-rigid containers specially constructed to be opened by cutting or piercing, or by tearing of frangible members or portions at lines or points of weakness characterised by having the line of weakness provided in an end wall

Definitions

  • the invention relates to a reclosable lid for cans or containers made of sheet metal, paper, glass, composite material or plastic, e.g. for paint cans.
  • a reclosable lid for cans or containers made of sheet metal or plastic e.g. to create for paint cans, which can be produced much cheaper and without any noteworthy waste and at the same time can be used in a simple manner as a guarantee closure.
  • the new lid can also be used as a replacement for the two-piece lid for paint cans. Due to the one-piece design, the waste of lid material that occurs during production is comparatively small.
  • the tearable area bounded by the predetermined breaking line in the lid mirror can be used after the first opening of the container in the manner of a push-in lid for reclosing the container opening, the predetermined breaking edges when reclosing the lid parts locking together elastically and positively, whereby the the necessary frictional engagement is replaced with press-in covers.
  • the one-piece cover advantageously consists of a multilayer composite material, in which at least two different material layers are assembled in a known manner with the aid of an adhesive or a plastic layer or the like to form a laminated film.
  • the predetermined breaking line can be formed by a corresponding notch in the composite material.
  • the annular predetermined breaking line is provided on an annular indentation of the cover mirror.
  • the indentation is directed towards the inside of the container and is expediently designed and arranged in such a way that an inwardly closed fold results, the legs of which lie together over part of their length, the contact surface preferably being a conical surface to the container axis.
  • the lid parts separated after breaking the predetermined breaking line come back into mutual contact when the loosened lid part is pushed back in, similar to the situation as with a two-part press-in lid of lacquer cans or the like.
  • the superimposed legs of the fold or indentation at the same time make it easy to form a guarantee closure, in that the legs are connected to one another in a sealing and detachable manner.
  • this can be done in a simple manner by a strip-shaped permanent heat seal or adhesive connection between the mutually contacting layers of the legs, this connection strip being delimited by notches in the region of one of the two contacting layers and the adhesive or heat seal connection being one develops higher adhesive force than is provided between the layers of the composite material, so that when tearing open the strip-shaped area of the one layer detaches from the associated composite material and only then is the predetermined breaking line broken.
  • the breaking line lies on the side of the container facing the inside of the container Guarantee closure. A premature leakage of the predetermined breaking point cannot impair the tightness of the container.
  • the predetermined breaking line is placed at a suitable point in the indentation or fold, in such a way that the predetermined breaking edges enter or snap into an elastic mutual locking position due to the elastic resilience of the composite material when the detached cover part is pressed in.
  • the container 1 shows a container 1, for example a paint can.
  • the container can be made of sheet metal, paper, glass, plastic or a composite material.
  • its upper edge is drawn in and rolled up.
  • the rolled, folded or heat-sealed edge 3 of a cover 2 designed according to the invention is permanently connected to the rolled edge.
  • the lid is recessed on an annular area 6.
  • the indentation is followed by an indentation 7 directed into the interior of the container 2, which is closed inwards by a hollow bead 8 and to which the lid mirror 4 is connected in the direction of the container axis 1 a via a stacking bead 5.
  • the container is rotationally symmetrical in the example shown.
  • the peculiarity of the cover 2 can therefore be seen on a selected cross-sectional area of the cover, e.g. one of the dashed areas 10. This area is shown on a larger scale in Figure 2.
  • the cover 2 consists of a multi-layer composite material.
  • two layers 1 and 15 are provided which are connected to one another with a predetermined adhesive force by means of an adhesive or plastic layer (not shown).
  • the composite material can also consist of more than two layers.
  • the indentation 7 is advantageously designed in the form of an annular, inward fold of the composite material.
  • the fold legs 7a and 7b come into direct mutual contact over a large part of their length.
  • the contact surface between the two fold legs forms a conical surface which is concentric to the container axis 1a, as indicated in FIG. 1 at 7c.
  • the fold legs 7a and 7b pass over transition regions into a bead section 8 which is hollow and circular in cross section and which connects the two legs.
  • the connection is, for example, permanent.
  • the adhesive force between the layers 14, 15 is selected to be lower than the adhesive force of the connection point 11.
  • the layer 15 on the leg 7a of the fold 7 is delimited on both sides of the connection point 11 by notches 12 and 13.
  • the internal tear resistance of the material of the layer 15 can also be correspondingly lower than the adhesive force in the ver be binding point 11, so that the part 30 is created by an internal separation process of the layer material 15, as indicated at 19 in Figure 3.
  • the detachable connection 11 in the area of the legs of the fold 7 forms a reliable seal and a guarantee lock, which can be released, for example, by inserting a screwdriver according to the arrow 20 into the fold.
  • a grip tab can be attached at a suitable point on the cover mirror, for example in order to apply a force that opens the fold 7 in accordance with arrow 21 to the central part of the cover mirror.
  • a predetermined breaking line is provided in the area of the indentation or fold 7 and on the side of the connection 11 facing the container interior.
  • this is a score line that penetrates the composite material to a considerable extent.
  • This notch line 17 is attached to the indentation in such a way that the notch edges which arise when the line 17 breaks in when the container is reopened, taking advantage of the elastic deformability of the composite material, come into mutual elastic, form-fitting engagement, as is the case with the predetermined breaking edges 17a, 17b is indicated in Figure 4.
  • the legs 7a, 7b of the fold or indentation 7 are held in mutual contact in the region of the conical surface 7c when the cover is in the re-closed state. Since the surfaces touch over a considerable length of the legs 7a, 7b, a sufficient seal of the interior of the container is also ensured in this way in the reclosed state.
  • the predetermined breaking line in the area of the notch 17 is provided in the preferred embodiment in the area of the transition point between the outer leg 7b of the fold 7 and the annular bead 8. This results in particularly favorable conditions with regard to the elasticity and locking of the predetermined breaking edges when the container is reclosed.
  • the score line 7 can instead of the side of the layer 15 as indicated at 18 from the side Layer 14 provided without changing anything in the effect.
  • the layers 15 may also be advantageous to attach the layers 15 to one another at a circumferential point of the cover and below the predetermined breaking line in FIG. 2 at 19 in order to prevent the legs of the bead 8 from gaping apart at this point after opening for the first time, which leads to reopening 4, especially when this stitching point 19, for example on the top of the inner lid area is marked by the position of a grip tab.
  • the position of the predetermined breaking edge 17b at the stitching point 19 is indicated by dashed lines in FIG. If pulling out of the loosened lid area at the circumferential point 19 begins, the bead 8 closes during the opening process and thereby releases the locking between the predetermined breaking edges 17a, 17b without any particular difficulties.
  • the composite material can be of different compositions.
  • Two metal layers (ALU / WB) can be connected via a plastic layer (PP / PE) or two plastic layers (e.g. both PP) can be connected to each other via a plastic layer (e.g. PVDC).
  • PP / PE plastic layer
  • PVDC plastic layer
  • the total thickness 16 of the composite material can be between approximately 0.15 to 0.30 mm.
  • connection in the area 11 between the limited areas of the layer 15 can be made by gluing, sealing or welding.
  • the position of the predetermined breaking line in relation to the indentation 7 is to be selected taking into account the material properties and the shape so that there is a press fit when reclosing, in particular between the predetermined breaking edges 17a, 17b.
  • the connection area 11 can also be provided by a releasable stitching in the contact area 11 between the areas of the layer 15, although a releasable connection by delamination, as described above, is preferred.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
EP90109324A 1989-06-09 1990-05-17 Wiederverschliessbarer Deckel für Dosen oder Behälter aus Blech, Papier, Glas, Verbundwerkstoff oder Kunststoff, z.B. für Lackdosen Withdrawn EP0401570A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3918930 1989-06-09
DE3918930A DE3918930A1 (de) 1989-06-09 1989-06-09 Wiederverschliessbarer deckel fuer dosen oder behaelter aus blech, papier, glas, verbundwerkstoff oder kunststoff, z. b. fuer lackdosen

Publications (1)

Publication Number Publication Date
EP0401570A1 true EP0401570A1 (de) 1990-12-12

Family

ID=6382460

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90109324A Withdrawn EP0401570A1 (de) 1989-06-09 1990-05-17 Wiederverschliessbarer Deckel für Dosen oder Behälter aus Blech, Papier, Glas, Verbundwerkstoff oder Kunststoff, z.B. für Lackdosen

Country Status (4)

Country Link
EP (1) EP0401570A1 (no)
DE (1) DE3918930A1 (no)
FI (1) FI902867A0 (no)
NO (1) NO902527L (no)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6844698B1 (en) 1999-11-12 2005-01-18 Lg Electronics Inc. Device and method for controlling supply of current and static capacitance to compressor

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113136A (en) * 1977-06-06 1978-09-12 Abbott Joseph L Tamper proof container assembly
GB2023555A (en) * 1978-06-23 1980-01-03 Superfos Emballage As Container closure
US4597502A (en) * 1982-02-16 1986-07-01 Rheem Manufacturing Corporation Industrial container with removable end closures and method of manufacture

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113136A (en) * 1977-06-06 1978-09-12 Abbott Joseph L Tamper proof container assembly
GB2023555A (en) * 1978-06-23 1980-01-03 Superfos Emballage As Container closure
US4597502A (en) * 1982-02-16 1986-07-01 Rheem Manufacturing Corporation Industrial container with removable end closures and method of manufacture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6844698B1 (en) 1999-11-12 2005-01-18 Lg Electronics Inc. Device and method for controlling supply of current and static capacitance to compressor

Also Published As

Publication number Publication date
FI902867A0 (fi) 1990-06-08
NO902527D0 (no) 1990-06-07
NO902527L (no) 1990-12-10
DE3918930A1 (de) 1990-12-13

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