EP0166688B1 - Plastic-coated aluminium container, formed by deep-drawing - Google Patents

Plastic-coated aluminium container, formed by deep-drawing Download PDF

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Publication number
EP0166688B1
EP0166688B1 EP85810263A EP85810263A EP0166688B1 EP 0166688 B1 EP0166688 B1 EP 0166688B1 EP 85810263 A EP85810263 A EP 85810263A EP 85810263 A EP85810263 A EP 85810263A EP 0166688 B1 EP0166688 B1 EP 0166688B1
Authority
EP
European Patent Office
Prior art keywords
container
partition wall
edge
sealed
deep
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
EP85810263A
Other languages
German (de)
French (fr)
Other versions
EP0166688A2 (en
EP0166688A3 (en
Inventor
Horst Zumsteg
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.)
Amcor Flexibles Rorschach AG
Original Assignee
Alcan Rorschach 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4247511&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0166688(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Alcan Rorschach AG filed Critical Alcan Rorschach AG
Priority to AT85810263T priority Critical patent/ATE43314T1/en
Publication of EP0166688A2 publication Critical patent/EP0166688A2/en
Publication of EP0166688A3 publication Critical patent/EP0166688A3/en
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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
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/02—Internal fittings
    • B65D25/04—Partitions

Definitions

  • the invention relates to a deep-drawn aluminum container coated with a plastic film or hot glue, according to the preamble of claim 1.
  • Containers are manufactured for frozen products or canteen catering, in which one or more partition walls are created directly during deep drawing.
  • the object of the present invention is now to create a container which can be produced with existing deep-drawing tools and divided into two or more sections, which sections are hermetically separated from one another after the lid has been put on.
  • Another object of the invention is to design the containers in such a way that they can be transported and stored nested (stacked) as before.
  • Another object of the invention is that the filled container can be sterilized without any mutual impairment of the products filled in the individual chambers.
  • the intermediate wall can advantageously be produced or inserted “in line” at the bottler. On the one hand, this allows the type of division of the container to be specified at short notice and the containers remain stackable as before, so that easy handling is not lost during their manufacture and transport.
  • thermoplastic plastic for the partition wall enables it to be sealed directly to both the container and the lid.
  • the somewhat larger cross-section of the intermediate wall ensures a 100% secure connection to the adjacent container areas when sealing, because this prestressing allows molten wall material to swell out along the sealing edges as a sealing bead.
  • Inexpensive manufacture of the partition can be done by punching or by spraying. In the case of sprayed walls, stiffening can be applied along the edges, which also allows the sealing area to be enlarged.
  • a deep-drawn container 1 produced in a known manner with a bottom 2 and side walls 3 and a flat edge 4 for sealing a lid 5, an intermediate wall 6 is used.
  • the container 1 is made of aluminum, which as corrosion protection and sealing medium with a thermoplastic plastic film or a hot glue lacquer such as Polypropylene, polyamide or high pressure polyethylene is coated.
  • the intermediate wall 6 is flush with the bottom 2 and the side walls 3 and is connected to the coating of the container 1 by heat sealing.
  • the upper edge 7 of the intermediate wall 6 lies in the plane of the edge 4 of the container 1; but it can also protrude a few tenths of a millimeter.
  • the height of the partition wall corresponds to the container height plus approx. 0.2 mm.
  • the intermediate wall 6 consists of a thermoplastic which is identical or related to the inner coating of the container 1 and which can be melted by heating the coating of the container 1.
  • the wall 6 can be made of a plat that is smooth on both sides be punched out; but it can also be produced as an injection molded part.
  • the intermediate wall 6 can, as shown in FIGS. 1 and 2, divide the container 1 in a ratio of 2: 3; however, it can also be used at another location on the container 1, or two walls 6 can be present. It is of course also possible to seal in a cross-shaped intermediate wall 11 (shown in broken lines in FIG. 1), which divides the container 1 into three or four separate chambers.
  • the intermediate wall 6 or 11 is preferably sealed “in line” before the container 1 is filled by placing the container 1 in a heatable receiving device and then inserting the intermediate wall 6, which is somewhat larger than the container cross-section at the assembly point. When pushed in, the edge areas of the intermediate wall 6 soften and fuse with the coating of the container 1. A small bead 12, cf. FIG. 3 shows that a hermetically sealed connection has arisen between the wall 6 and the container 1.
  • the lid 5 After filling the container 1 with mostly different tastes, e.g. Meat on curry sauce and rice, the lid 5 is sealed in a conventional manner and on known machines. In this process, the upper edge 7 of the intermediate wall 6 is simultaneously welded to the cover 5 or the coating. The individual container chambers are now completely hermetically sealed rooms. During the sterilization process and during storage, there can be no contact between the adjacent goods.
  • the container 1 provided with an intermediate wall 6 is opened in a conventional manner.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Table Devices Or Equipment (AREA)
  • Packages (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)

Abstract

1. An aluminium container (1), formed by deep-drawing, which is coated with a plastic film or a heat adhesive (hot melt adhesive), which has an edge (4) to which a cover (5) is to be sealed, characterized in that for compartmentalizing the container (1) there is a partition wall (6) which is adapted to the cross-section of the container (1) and which is made out of thermoplastics plastics material, the edge of which can be joined to the side walls (3) of the container, the container base (2) and the lid (5) by means of heat sealing.

Description

Die Erfindung betrifft einen tiefgezogenen, mit einem Kunststoffilm oder Heisskleber beschichteten Aluminiumbehälter gemäss Oberbegriff des Patentanspruches 1.The invention relates to a deep-drawn aluminum container coated with a plastic film or hot glue, according to the preamble of claim 1.

Unterteilte Behälter aus Aluminium sind bekannt. Für Tiefkühlprodukte oder Kantinenverpflegung werden Behälter hergestellt, bei denen eine oder mehrere Zwischenwände unmittelbar beim Tiefziehen erzeugt werden.Divided aluminum containers are known. Containers are manufactured for frozen products or canteen catering, in which one or more partition walls are created directly during deep drawing.

Diese Behälter weisen längs deren Rändern und insbesondere an den Übergangsstellen von den Seiten- in die Zwischenwände Falten auf, die sich herstellungstechnisch nicht vermeiden lassen. Infolge dieser Falten lassen sich solche, unter dem Namen «Faltenbehälter» bekannte Behälter nicht dicht verschliessen und können demnach nur für nicht-sterilisierbare Produkte eingesetzt werden, welche entweder tiefgefroren oder für den alsbaldigen Konsum bestimmt sind.These containers have folds along their edges and in particular at the transition points from the side walls into the intermediate walls, which cannot be avoided in terms of production technology. As a result of these folds, such containers, known under the name “fold containers”, cannot be sealed tightly and can therefore only be used for non-sterilizable products which are either deep-frozen or intended for immediate consumption.

Tiefziehtechnisch ist es nicht möglich, einen glattwandigen Behälter mit integrierter Zwischenwand wie bei Faltenbehältern üblich, herzustellen. Der Markt verlangt aber sterilisierbare unterteilte Behälter, um bei sterilisierten Füllgütern die durch die Langzeitlagerung bedingte Geschmacksbeeinträchtigung zu unterbinden.From a deep-drawing point of view, it is not possible to produce a smooth-walled container with an integrated partition, as is customary for folding containers. However, the market demands sterilizable subdivided containers in order to prevent the impairment of taste caused by long-term storage in the case of sterilized filling goods.

Die Aufgabe der vorliegenden Erfindung besteht nun darin, einen Behälter zu schaffen, der mit bestehenden Tiefziehwerkzeugen hergestellt und in zwei oder mehr Abschnitte unterteilt werden kann, welche Abschnitte nach dem Aufsetzen des Deckels hermetisch voneinander getrennt sind.The object of the present invention is now to create a container which can be produced with existing deep-drawing tools and divided into two or more sections, which sections are hermetically separated from one another after the lid has been put on.

Eine weitere Aufgabe der Erfindung besteht darin, die Behälter derart auszubilden, dass diese wie bisher ineinandergesteckt (gestapelt) transportiert und gelagert werden können.Another object of the invention is to design the containers in such a way that they can be transported and stored nested (stacked) as before.

Eine weitere Aufgabe der Erfindung besteht darin, dass der gefüllte Behälter sterilisierbar ist, ohne dass dabei eine gegenseitige Beeinträchtigung der in den einzelnen Kammern eingefüllten Produkte auftreten kann.Another object of the invention is that the filled container can be sterilized without any mutual impairment of the products filled in the individual chambers.

Nach der Erfindung werden diese Aufgaben gemäss den kennzeichnenden Merkmalen des Patentanspruches 1 gelöst. Die Herstellung des Behälters erfolgt nach der Erfindung gemäss Patentanspruch 7.According to the invention, these objects are achieved according to the characterizing features of claim 1. The container is manufactured according to the invention in accordance with patent claim 7.

Mit einer Zwischenwand aus Kunststoff kann eine kostengünstige, absolut sichere Unterteilung in Behältern, hergestellt aus kunststoffbeschichteten oder heisskleberkaschiertem Aluminium, erzeugt werden. Bei rechteckförmigen Behältern kann die Aufteilung- des Behälterinnenraumes jederzeit und ohne Änderungen am Behälter oder an der Zwischenwand den einzufüllenden Produktemengen angepasst werden.With an intermediate wall made of plastic, a cost-effective, absolutely safe subdivision into containers made of plastic-coated or hot-glue-laminated aluminum can be created. In the case of rectangular containers, the division of the container interior can be adapted at any time and without changes to the container or on the intermediate wall to the product quantities to be filled.

Die Herstellung beziehungsweise das Einsetzen der Zwischenwand kann in vorteilhafter Weise «in line» beim Abfüller erfolgen. Einerseits kann dadurch die Art der Aufteilung des Behälters kurzfristig vorgegeben werden und die Behälter bleiben wie bisher stapelbar, so dass die einfache Handhabung während deren Herstellung und Transport nicht verloren geht.The intermediate wall can advantageously be produced or inserted “in line” at the bottler. On the one hand, this allows the type of division of the container to be specified at short notice and the containers remain stackable as before, so that easy handling is not lost during their manufacture and transport.

Weitere vorteilhafte Ausbildungsformen der Erfindung sind in den abhängigen Ansprüchen beschrieben.Further advantageous embodiments of the invention are described in the dependent claims.

Durch die starre Ausbildung der Zwischenwand kann diese ohne zusätzlichen Aufwand mit den herkömmlichen Verschlusswerkzeugen mit dem Deckel versiegelt werden.Due to the rigid design of the partition, it can be sealed with the lid using the conventional closing tools without additional effort.

Die Verwendung eines thermoplastischen Kunststoffes für die Zwischenwand ermöglicht ein direktes Versiegeln derselben sowohl mit dem Behälter als auch mit dem Deckel.The use of a thermoplastic plastic for the partition wall enables it to be sealed directly to both the container and the lid.

Der etwas grössere Querschnitt der Zwischenwand gewährleistet beim Einsiegeln eine 100%ig sichere Verbindung mit den anliegenden Behälterbereichen, weil durch diese Vorspannung längs der Siegelkanten geschmolzenes Wandmaterial als Siegelwulst herausquellen kann.The somewhat larger cross-section of the intermediate wall ensures a 100% secure connection to the adjacent container areas when sealing, because this prestressing allows molten wall material to swell out along the sealing edges as a sealing bead.

Eine preisgünstige Herstellung der Zwischenwand kann durch Stanzen oder durch Spritzen erfolgen. Bei gespritzten Wänden kann längs den Rändern eine Versteifung angebracht werden, die zudem eine Vergrösserung der Siegelfläche erlaubt.Inexpensive manufacture of the partition can be done by punching or by spraying. In the case of sprayed walls, stiffening can be applied along the edges, which also allows the sealing area to be enlarged.

In den Behältern können geschmacklich völlig verschiedene Gerichte im Autoklav sterilisiert werden, die sich somit als Vollkonserve für eine mehrjährige Lagerung eignen.In the containers, completely different tastes of dishes can be sterilized in an autoclave, which are therefore suitable as full preserves for storage for several years.

Anhand eines illustrierten Ausführungsbeispieles wird die Erfindung näher erläutert. Es zeigen:

  • Figur 1 eine perspektivische Darstellung eines Behälters mit einer Zwischenwand,
  • Figur 2 einen Schnitt längs Linie 11-11 in Figur 1,
  • Figur 3 einen Schnitt durch einen weiteren Behälter.
The invention is explained in more detail using an illustrated exemplary embodiment. Show it:
  • FIG. 1 shows a perspective illustration of a container with an intermediate wall,
  • FIG. 2 shows a section along line 11-11 in FIG. 1,
  • Figure 3 shows a section through another container.

In einem in bekannter Weise hergestellten tiefgezogenen Behälter 1 mit einem Boden 2 und Seitenwänden 3 sowie einem ebenen Rand 4 zum Aufsiegeln eines Deckels 5 ist eine Zwischenwand 6 eingesetzt. Der Behälter 1 ist aus Aluminium hergestellt, welches als Korrosionsschutz und Siegelmedium mit einem thermoplastischen Kunststoffilm oder einem Heissklebelack wie z.B. Polypropylen, Polyamid oder Hochdruckpoly- äthylen beschichtet ist.In a deep-drawn container 1 produced in a known manner with a bottom 2 and side walls 3 and a flat edge 4 for sealing a lid 5, an intermediate wall 6 is used. The container 1 is made of aluminum, which as corrosion protection and sealing medium with a thermoplastic plastic film or a hot glue lacquer such as Polypropylene, polyamide or high pressure polyethylene is coated.

Die Zwischenwand 6 liegt bündig am Boden 2 und an den Seitenwänden 3 an und ist mit der Beschichtung des Behälters 1 durch Heissiegelung verbunden. Der obere Rand 7 der Zwischenwand 6 liegt in der Ebene des Randes 4 des Behälters 1; er kann diese aber auch um einige Zehntelmillimeter überragen. Für die Bestimmung der Abmasse der einzusiegelnden Zwischenwand werden für die Seiten und den Boden inklusive die Radien die Aussenmasse des jeweiligen Behälters angenommen. Die Höhe der Zwischenwand entspricht der Behälterhöhe plus ca. 0,2 mm.The intermediate wall 6 is flush with the bottom 2 and the side walls 3 and is connected to the coating of the container 1 by heat sealing. The upper edge 7 of the intermediate wall 6 lies in the plane of the edge 4 of the container 1; but it can also protrude a few tenths of a millimeter. To determine the dimensions of the partition to be sealed, the outside dimensions of the respective container are assumed for the sides and the bottom, including the radii. The height of the partition wall corresponds to the container height plus approx. 0.2 mm.

Die Zwischenwand 6 besteht aus einem thermoplastischen Kunststoff, der identisch oder verwandt mit der Innenbeschichtung des Behälters 1 ist und welcher durch Erwärmen mit der Beschichtung des Behälters 1 vers.chmelzbar ist. Die Wand 6 kann aus einer beidseitig glatten Platte herausgestanzt sein; sie kann aber auch als Spritzgussteil hergestellt sein.The intermediate wall 6 consists of a thermoplastic which is identical or related to the inner coating of the container 1 and which can be melted by heating the coating of the container 1. The wall 6 can be made of a plat that is smooth on both sides be punched out; but it can also be produced as an injection molded part.

Ist das letztere der Fall, so besteht die Möglichkeit, eine Verrippung 8 längs der Ränder eine Versteifung 9 anzubringen. Durch die Versteifung 9 kann die Kontakt- und folglich die Siegelfläche 10 zwischen der Wand 6 und dem Behälter 1 vergrössert werden, ohne dass dazu mehr Material benötigt wird.If the latter is the case, there is the possibility of attaching a rib 8 along the edges of a reinforcement 9. Due to the stiffening 9, the contact and consequently the sealing surface 10 between the wall 6 and the container 1 can be enlarged without the need for more material.

Die Zwischenwand 6 kann, wie in den Figuren 1 und 2 gezeigt, den Behälter 1 im Verhältnis 2:3 teilen; sie kann aber auch an einer anderen Stelle des Behälters 1 eingesetzt werden, oder es können zwei Wände 6 vorhanden sein. Es ist selbstverständlich auch möglich, eine kreuzförmig ausgebildete Zwischenwand 11 (in gebrochenen Linien in Figur 1 sichtbar) einzusiegeln, welche den Behälter 1 in drei oder vier voneinander getrennte Kammern aufteilt.The intermediate wall 6 can, as shown in FIGS. 1 and 2, divide the container 1 in a ratio of 2: 3; however, it can also be used at another location on the container 1, or two walls 6 can be present. It is of course also possible to seal in a cross-shaped intermediate wall 11 (shown in broken lines in FIG. 1), which divides the container 1 into three or four separate chambers.

Vorzugsweise wird die Zwischenwand 6 bzw. 11 «in line» vor dem Abfüllen der Behälter 1 eingesiegelt, indem der Behälter 1 in eine beheizbare Aufnahmevorrichtung eingelegt wird und anschliessend die Zwischenwand 6, welche etwas grösser ist als der Behälterquerschnitt an der Montagestelle, eingeschoben wird. Beim Einschieben erweichen die Kantenbereiche der Zwischenwand 6 und verschmelzen mit der Beschichtung des Behälters 1. Ein kleiner Wulst 12, vgl. Figur 3, zeigt, dass zwischen der Wand 6 und dem Behälter 1 eine hermetisch dichte Verbindung entstanden ist.The intermediate wall 6 or 11 is preferably sealed “in line” before the container 1 is filled by placing the container 1 in a heatable receiving device and then inserting the intermediate wall 6, which is somewhat larger than the container cross-section at the assembly point. When pushed in, the edge areas of the intermediate wall 6 soften and fuse with the coating of the container 1. A small bead 12, cf. FIG. 3 shows that a hermetically sealed connection has arisen between the wall 6 and the container 1.

Nach dem Füllen des Behälters 1 mit meist geschmacklich unterschiedlichen Gerichten, z.B. Fleisch an Currysauce und Reis, wird in herkömmlicher Weise und auf bekannten Maschinen der Deckel 5 aufgesiegelt. Bei diesem Vorgang wird gleichzeitig der obere Rand 7 der Zwischenwand 6 mit dem Deckel 5, bzw. der Beschichtung, verschweisst. Die einzelnen Behälterkammern sind nun in sich vollständig hermetisch verschlossene Räume. Beim Sterilisationsvorgang und während der Lagerung kann kein Kontakt zwischen den nebeneinander liegenden Füllgütern stattfinden.After filling the container 1 with mostly different tastes, e.g. Meat on curry sauce and rice, the lid 5 is sealed in a conventional manner and on known machines. In this process, the upper edge 7 of the intermediate wall 6 is simultaneously welded to the cover 5 or the coating. The individual container chambers are now completely hermetically sealed rooms. During the sterilization process and during storage, there can be no contact between the adjacent goods.

Das Öffnen des mit einer Zwischenwand 6 versehenen Behälters 1 erfolgt in herkömmlicher Weise.The container 1 provided with an intermediate wall 6 is opened in a conventional manner.

Claims (9)

1. An aluminium container (1), formed by deep-drawing, which is coated with a plastic film or a heat adhesive (hot melt adhesive), which has an edge (4) to which a cover (5) is to be sealed, characterised in that for compartmentalizing the container (1) there is a partition wall (6) which is adapted to the cross-section of the container (1) and which is made out of thermoplastics plastics material, the edge of which can be joined to the side walls (3) of the container, the container base (2) and the lid (5) by means of heat sealing.
2. A container as claimed in claim 1, wherein the upper edge (7) of the partition wall (6) is flush with the edge (4) of the container (1).
3. A container as claimed in claim 1, wherein the plastics of the partition wall is chemically related to the material coating the container (1) and is thermically connectable to the same.
4. A container as claimed in claim 1, wherein, before the sealing process, the partition wall (6) has a cross-section, which is larger than that of the container (1) at the point where the wall (6) is to be inserted.
5. A container according to one of the preceding claims, wherein the partition wall (6) is manufactured by means of pressing or injection moulding processes.
6. A container as claimed in claim 5, wherein the partition wall (6) has ribbing (8) and stiffening (9) along its edges.
7. Manufacture of the container as claimed in claim 1, wherein the partition wall (6) is connected to the container base (2) and the side walls (3) on the production line by means of heat sealing before the container (1) is filled.
8. Manufacture of the container as claimed in claim 7, wherein when the cover (5) is sealed onto the edge (4) of the container (1), the upper edge (7) of the partition wall (6) is sealed to the cover (5).
9. Use of the container as claimed in claim 1 for full preserves which are sterilized in the container (1) in an autoclave.
EP85810263A 1984-06-25 1985-06-10 Plastic-coated aluminium container, formed by deep-drawing Expired EP0166688B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85810263T ATE43314T1 (en) 1984-06-25 1985-06-10 DEEP-DRAWN, PLASTIC-COATED ALUMINUM CONTAINER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH305184 1984-06-25
CH3051/84 1984-06-25

Publications (3)

Publication Number Publication Date
EP0166688A2 EP0166688A2 (en) 1986-01-02
EP0166688A3 EP0166688A3 (en) 1987-12-16
EP0166688B1 true EP0166688B1 (en) 1989-05-24

Family

ID=4247511

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85810263A Expired EP0166688B1 (en) 1984-06-25 1985-06-10 Plastic-coated aluminium container, formed by deep-drawing

Country Status (5)

Country Link
EP (1) EP0166688B1 (en)
AT (1) ATE43314T1 (en)
AU (1) AU570317B2 (en)
DE (1) DE3570416D1 (en)
DK (1) DK160696C (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2826338A (en) * 1954-03-25 1958-03-11 Simoniz Co Receptacle
GB1343575A (en) * 1972-05-05 1974-01-10 Alusuisse Multi-compartment containers
DE2601235A1 (en) * 1976-01-14 1977-07-21 Pfeiffer Ohler Eisen Theob Container for packing food - has opening enclosed by cover sealed to roll over edge of containers horizontal flange

Also Published As

Publication number Publication date
AU4144085A (en) 1986-01-02
ATE43314T1 (en) 1989-06-15
DK160696B (en) 1991-04-08
AU570317B2 (en) 1988-03-10
DK283885A (en) 1985-12-26
EP0166688A2 (en) 1986-01-02
DE3570416D1 (en) 1989-06-29
DK160696C (en) 1991-09-23
EP0166688A3 (en) 1987-12-16
DK283885D0 (en) 1985-06-24

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