EP0983947B2 - Deckel und Verfahren zur Herstellung desselben - Google Patents

Deckel und Verfahren zur Herstellung desselben Download PDF

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Publication number
EP0983947B2
EP0983947B2 EP98810866A EP98810866A EP0983947B2 EP 0983947 B2 EP0983947 B2 EP 0983947B2 EP 98810866 A EP98810866 A EP 98810866A EP 98810866 A EP98810866 A EP 98810866A EP 0983947 B2 EP0983947 B2 EP 0983947B2
Authority
EP
European Patent Office
Prior art keywords
lid
printing
sealing layer
container
sealing
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 - Lifetime
Application number
EP98810866A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0983947A1 (de
EP0983947B1 (de
Inventor
Wilfried Jud
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.)
3A Composites International AG
Original Assignee
Alcan Technology and Management Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8236293&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0983947(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Alcan Technology and Management Ltd filed Critical Alcan Technology and Management Ltd
Priority to AT98810866T priority Critical patent/ATE261379T1/de
Priority to ES98810866T priority patent/ES2213889T5/es
Priority to DK98810866T priority patent/DK0983947T4/da
Priority to DE59810957T priority patent/DE59810957D1/de
Priority to EP98810866A priority patent/EP0983947B2/de
Priority to PT98810866T priority patent/PT983947E/pt
Priority to US09/379,490 priority patent/US6308853B1/en
Priority to CA002280671A priority patent/CA2280671A1/en
Publication of EP0983947A1 publication Critical patent/EP0983947A1/de
Priority to US09/841,599 priority patent/US6722272B2/en
Publication of EP0983947B1 publication Critical patent/EP0983947B1/de
Application granted granted Critical
Publication of EP0983947B2 publication Critical patent/EP0983947B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • B65D77/2024—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers the cover being welded or adhered to 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
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/10—Container closures formed after filling
    • B65D77/20—Container closures formed after filling by applying separate lids or covers, i.e. flexible membrane or foil-like covers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24802—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.]
    • Y10T428/24843—Discontinuous or differential coating, impregnation or bond [e.g., artwork, printing, retouched photograph, etc.] with heat sealable or heat releasable adhesive layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2813—Heat or solvent activated or sealable
    • Y10T428/2817—Heat sealable

Definitions

  • the present invention relates to an unembossed lid made of a carrier material, with a, based on a container to which the lid is applied, outwardly facing printing and an inwardly facing sealing layer for closing the container containing a shoulder region, wherein the inwardly facing side the Dekkels the sealing layer in the form of a printed image and the printed image corresponds to the shoulder region of the container.
  • containers such as deep drawn or stretched containers or otherwise shaped container
  • Such containers especially after filling, to cover, the lid rests over its entire surface on the shoulder and, for example is sealed and sealed by sealing or gluing on the shoulder.
  • Such cups, trays, menu trays, for example, with one or more compartments, goblets, small packs, etc. are known, for example, for packaging food of all kinds, such as e.g. Dairy products, in particular yoghurt, whipped cream, sour milk, sour cream, creamer, ready-made preparations of salads or semi- or canned goods, precooked or otherwise prepared dishes, beverages, such as fruit and vegetable juices, drinking water, etc.
  • the lids are punched and stacked, for example, from an endless lid material present.
  • the stack of lids are fed to a packaging machine and the isolated or unstacked lids are continuously sealed onto the already filled containers.
  • the provided with a sealing layer lid are sealed by means of a sealing tool in the shoulder region of the container on the container edge.
  • the separation or destacking of the lid by removal from the lid stack is not always reliably performed by the Verpakkungsmaschinen, since the adjacent lid can adhere to each other undesirable each other.
  • embossing the lid material the effect of sticking together can be prevented.
  • embossing on the lid material has a negative effect on the printed image on the outside of the lid.
  • the lid material can be made of a variety of materials, depending on the requirements. Typical examples are metal foils which are coated on one or both sides with plastic. Other lid materials contain or consist of plastics in the form of monofilms or multilayer laminates. Other lidding materials may be cellulosic materials such as cellophane or paper. Also used are laminates of metal and plastic films.
  • the lidding material is provided over its entire surface with a sealing layer, such as a sealing wax or a sealing foil, the sealing layer being provided, for example, at least on the side facing the finished package, i. pointing towards the container interior, is attached.
  • the lid material further serves as an information and advertising medium. For this reason, the lid material is provided on its outside with a pressure.
  • the printing can be arranged on the uppermost layer facing outward on a finished container as a so-called straight printing.
  • the printing can also be covered with a protective lacquer or with a protective film or the uppermost layer of the lid material can be made of transparent material and printed on the back (so-called counterpressure).
  • the print images can be one or more colors and applied in a printing press.
  • the lidding material is produced, for example, in such a way that a carrier, such as a metal foil, a plastic foil or a plastic foil composite is processed by laminating or calendering with one or more further layers to form a multi-layer composite.
  • a carrier such as a metal foil, a plastic foil or a plastic foil composite
  • the sealing layer is applied by painting or laminating.
  • the lid material present in rolls for example, is passed through a printing press.
  • an embossing step is to be provided, which gives the lid material, for example, a worm embossing.
  • EP-A 0 847 933 describes a lid material for containers, wherein the sealing layer is applied in the form of a printed image on the lid material and the printed image corresponds to the shoulder region of the container.
  • the lidding material is sealed thereto via the sealing layer along the shoulder region of the container.
  • lid materials A disadvantage of older known methods for the production of lid materials is the high cost of materials for the full-surface coverage of the lid material with sealable material, although only a small percentage of this sealable material is ultimately needed for the sealed seam.
  • the lid material In the cases described here, the lid material must be embossed and the embossed lid material, resp. the lid made of it, give the printed image only unfavorably.
  • Object of the present invention is to overcome these disadvantages and to propose a cover, which allows an economical use of individual materials and which can be reliably separated from a stack of lids.
  • the print pattern is especially external, ie it represents the respective outermost layer and is exposed on its outside.
  • the print pattern is located entirely within the area bounded by the sealant layer.
  • the print pattern is applied to the inwardly facing side of the lid.
  • the carrier material may be a monofilm of plastic or a multilayer composite of two or more plastic layers or a metal foil or a multilayer composite of at least one metal foil or and at least one plastic foil.
  • the carrier material can also consist of cellulose-containing material or contain cellulose-containing material.
  • the cellulose-containing material may be coated on one or both sides, for example, with plastic or may be metallized or may have a plastic layer on one side and a metallized layer on the other side.
  • the plastics of the carrier material may be, for example, polyolefins, such as polyethylenes or polypropylenes, polyamides, polyethylene terephthalates or polyvinyl chlorides.
  • metal foils for example, steel or aluminum foils can be used.
  • the support material may have a thickness of, for example, 12-500 .mu.m, the support materials made of plastic films or metal foils or of metal and plastic foils preferably having a thickness of 12-150 .mu.m, while cover materials containing cellulosic materials, for example, a thickness of 40-500 .mu.m exhibit.
  • the carrier materials are in particular so flexible that they can be wound into rolls (coils).
  • Preferred support materials comprise a transparent, opaque or opaque film or a film composite of at least one plastic of the series of polyesters, polyolefins such as polyethylenes or polypropylenes, polyamides or of cellglass or of a metal foil or of a plastic-coated metal foil or a laminate Paper with a plastic layer, such as a polyethylene terephthalate layer, which in turn may be metallized.
  • the carrier material may also have a barrier to gases, vapors and moisture.
  • Barrier layers may, in addition to the metal foils mentioned, be, for example, films made of plastics, such as polyvinylidene chloride or ethylvinyl alcohol, or they may be a layer of ceramic materials, such as the oxides or nitrides of silicon or aluminum, which are in a thin layer , eg in the range of 10 to 500 nanometers, have been deposited on a carrier film in a vacuum thin film process.
  • further barrier layers are metallic layers, e.g. made of aluminum, which are deposited by sputtering on the carrier.
  • a print can be arranged on the - at the later finished container - outwardly facing side of the lid.
  • the printing on the substrate can be done by any known printing method, e.g. Book, offset, flexo, screen, helio and copper gravure.
  • the choice of which printing process to use depends on the desired print quality, the respective technical conditions and the number of copies. Preference is given to flexographic printing (also called aniline or rubber printing) and gravure printing, such as copper gravure printing, or helical printing.
  • the printing on the outside of the support material may, for example, additionally be overcoated by means of a protective lacquer or by means of a Kaschierzsstoffs or an adhesive may also be a transparent film, for example of polyethylene terephthalate, polyamide, polyolefins, such as polyethylene or polypropylene or a glass layer, but then in general Improvement of the protection of the printed image is printed in reverse printing, are laminated to the substrate.
  • a sealing layer and a printed pattern are applied on the side of the lid facing the inside of the container, which is a finished container.
  • the sealing layer and the printing pattern are mounted in the form of printed images on the substrate.
  • the sealing layer can be applied to the carrier material in a preceding or back-fed printing press, ie before or after the production of the outside printed image.
  • the printing pattern can be applied to the carrier material in the same or a preceding or back-fed printing machine, ie simultaneously with, before or after the production of the sealing layer.
  • the printing pattern is expediently applied using the same printing form which prints on the sealing layer.
  • the printing pattern can advantageously be made of a primer and / or bonding agent and a sealing wax or can only be from a sealing wax.
  • a primer or adhesion promoter and a sealing lacquer Preference is given to the use of a primer or adhesion promoter and a sealing lacquer.
  • the primer and the sealing wax are successively applied in a printing machine, for example by a book, offset, flexo, screen, heli, gravure or copper gravure, preferably by a flexo or gravure printing on the substrate.
  • the high negative print pattern means that 0.1 to 20%, suitably 1 to 10%, of the inwardly facing surface of the lid is covered with the print pattern and the remaining area is free from the print pattern.
  • the print patterns may be the same or unevenly distributed dot or Strip or line or line grid and so on.
  • the sealant layer can contain or consist of a sealing lacquer, for example from the series of polyolefins and preferably polyethylenes, or the vinylacrylic copolymers or the acrylic polymer-containing lacquers or the epoxy lacquers.
  • the sealing layer, as well as the printing pattern can also contain the sealing wax and a primer or primer, for example from the series of polyesters or vinyl polymers. The primer or primer is advantageously applied to the carrier and the sealing wax on the primer or primer.
  • dispersions or lacquers both solvent-based and solvent-free lacquers, such as polymer-containing lacquers, e.g. based on PVC, PVC / PVAC, PVDC or acrylates, for forming the printing pattern.
  • the solids content in the paints should be as high as possible and the proportion of solvents should be as low as possible.
  • the dispersions and paints must be druckmaschinen published.
  • the present invention also relates to a method for producing lids from a carrier material, with respect to a container on which the lids are applied, outwardly facing printing and an inwardly facing sealing layer, wherein the inwardly-facing sealing layer by means of a printing process on the carrier material is attached and the printed image corresponds to the shoulder region of the container for closing containers, with an endless and in particular annular shoulder region.
  • FIG. 1 is a schematic view of a cup and a section through a lid according to the invention.
  • the FIGS. 2, 3 and 4 represent plan views of the insides of lids with different print patterns.
  • FIG. 1 shows by way of example and schematically a cup 1 of side wall 2, bottom 3 and upper edge termination, which forms the shoulder 4.
  • a food or a drink such as yogurt, jam, dried fruit, a chocolate preparation or other dessert or drinking water or fruit and vegetable juices
  • the cup 1 is covered with the lid 10 and the lid 10 along the shoulder 4 sealed onto the cup 1.
  • the lid 10 contains a carrier material 5, attached to it a printing 6 and a protective layer 7, for example in the form of a protective lacquer or a protective film. On the against the container, resp.
  • the sealing layer of primer 8 and sealing wax 9 applied only in places, namely corresponding or approximately corresponding to the image of the annular shoulder 4 of the cup 1.
  • the Sealant layer of primer 8 and sealing wax 9 therefore applied only or substantially only at those points on the carrier 5, which come into contact with the shoulder 4. This is indicated schematically by the dotted lines. For the present example, this would mean that the sealing layer 8, 9 has been printed annularly on the carrier 5. It goes without saying that the printed image of the sealing layer can deviate slightly from the shoulder region 4 of the cup 1.
  • the printed image of the sealing layer 8, 9 may be narrower, for example 1 to 50% narrower than the width of the shoulder of the container 4, or to compensate for machine inaccuracies, the area of the printed image of the sealing layer 8, 9 by a few percent, such as 1 to 25%, be chosen greater than the contact surface between the cover 10 and shoulder region 4.
  • the print pattern 11 is also exemplified by primer 8 and sealing wax 9 is formed.
  • primer 8 For corrosion-sensitive cover materials, eg metal foils, it is advisable to apply Primer 8 over the entire surface as protection against aggressive substances.
  • FIGS. 2, 3 and 4 In plan view, covers 10 with different print patterns 11 are shown.
  • the print pattern 11 can be seen in the form of a pattern of dots 12.
  • the printing pattern 11 is within the printed sealing edge of the sealing layer 8.9 printed on the carrier 5.
  • the print pattern 11 in the form of a grid of Einzelstrichen- or stripes 13, for example, in parallel resp. radial arrangement, recognizable.
  • the printing pattern 11 is also printed in this case within the printed edge of the seal from the sealing layer 8,9 on the carrier 5.
  • the present lidding material can be sealed over the sealing layer to the container rim.
  • the sealing seam may also be provided with marking aids, for example in the form of weaker sealed partial areas in the sealed seam or by serrated sealing seam edges.
  • bonding with an adhesive such as a pressure sensitive adhesive or a heat and / or pressure setting adhesive may also be used. This with the proviso that the adhesive can be processed in a printing unit and the adhesive can be printed on the lid material.
  • the present lid material has the advantage of dealing with the starting materials extremely sparingly, in particular by the primer or primer and sealing wax is applied only sparsely in the places where they are actually needed.
  • the primer or coupling agent will be present in amounts of from 0.2 to 30 grams, preferably from 1 to 20 grams per square meter, and the sealing wax in amounts of from 0.5 to 30 grams, preferably 1.5 to 20 grams, per square meter and especially each applied at 4 to 10 g per square meter. Since the primer, resp. Adhesive and the sealing wax usually has to be added to the processing in the printing press in a solvent, the amount of solvent to be evaporated significantly reduced. This is expressed both in the energy requirement and in the amount of solvent.
  • the present method is advantageous because the production of the lid material requires less machine operation.
  • the sealing layer need not be applied separately as a layer or film, but can be applied during the application of the printed image in the same operation and in the printing press.
  • the print pattern spaces the lids in the stack and mutual adhesion of the lids is effectively inhibited. This unembossed lid in the stack of covers in packaging machines are reliably machine accessible.
  • the finished covers may further comprise a tear-open or grip tab and / or weakenings, for example in the form of perforations or scoring marks, which facilitate the opening of the container by removing the lid.
  • the sealing layer is present on the lid substantially only in the shoulder region of the opposite container, the risk is minimized that components diffuse from the sealing layer into the container contents and influence, for example, the container contents by odors or flavors.
  • the present invention makes it possible to provide completely transparent or almost completely transparent lid materials by the sealing wax is applied only at the points of the seal and not over the entire lid area and fully retain the properties of a completely transparent substrate.
  • the transparent support materials thus do not deteriorate with respect to their transparency through the sealing wax and the primer.
EP98810866A 1998-09-01 1998-09-01 Deckel und Verfahren zur Herstellung desselben Expired - Lifetime EP0983947B2 (de)

Priority Applications (9)

Application Number Priority Date Filing Date Title
AT98810866T ATE261379T1 (de) 1998-09-01 1998-09-01 Deckel und verfahren zur herstellung desselben
ES98810866T ES2213889T5 (es) 1998-09-01 1998-09-01 Tapa y procedimiento para su fabricacion.
DK98810866T DK0983947T4 (da) 1998-09-01 1998-09-01 Låg og fremgangsmåde til fremstilling af samme
DE59810957T DE59810957D1 (de) 1998-09-01 1998-09-01 Deckel und Verfahren zur Herstellung desselben
EP98810866A EP0983947B2 (de) 1998-09-01 1998-09-01 Deckel und Verfahren zur Herstellung desselben
PT98810866T PT983947E (pt) 1998-09-01 1998-09-01 Tampa e processo para a sua fabricacao
US09/379,490 US6308853B1 (en) 1998-09-01 1999-08-23 Lid material
CA002280671A CA2280671A1 (en) 1998-09-01 1999-08-25 Lid-material
US09/841,599 US6722272B2 (en) 1998-09-01 2001-04-25 Lid material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98810866A EP0983947B2 (de) 1998-09-01 1998-09-01 Deckel und Verfahren zur Herstellung desselben

Publications (3)

Publication Number Publication Date
EP0983947A1 EP0983947A1 (de) 2000-03-08
EP0983947B1 EP0983947B1 (de) 2004-03-10
EP0983947B2 true EP0983947B2 (de) 2008-10-01

Family

ID=8236293

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98810866A Expired - Lifetime EP0983947B2 (de) 1998-09-01 1998-09-01 Deckel und Verfahren zur Herstellung desselben

Country Status (8)

Country Link
US (2) US6308853B1 (pt)
EP (1) EP0983947B2 (pt)
AT (1) ATE261379T1 (pt)
CA (1) CA2280671A1 (pt)
DE (1) DE59810957D1 (pt)
DK (1) DK0983947T4 (pt)
ES (1) ES2213889T5 (pt)
PT (1) PT983947E (pt)

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EP0983947A1 (de) 2000-03-08
EP0983947B1 (de) 2004-03-10
ES2213889T3 (es) 2004-09-01
ES2213889T5 (es) 2009-03-01
US6308853B1 (en) 2001-10-30
ATE261379T1 (de) 2004-03-15
DK0983947T3 (da) 2004-07-12
CA2280671A1 (en) 2000-03-01
PT983947E (pt) 2004-05-31
DE59810957D1 (de) 2004-04-15
US6722272B2 (en) 2004-04-20
DK0983947T4 (da) 2009-02-09
US20010015356A1 (en) 2001-08-23

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