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EP0003623B1 - Packing material for solid or pasty fillings - Google Patents

Packing material for solid or pasty fillings Download PDF

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Publication number
EP0003623B1
EP0003623B1 EP79200048A EP79200048A EP0003623B1 EP 0003623 B1 EP0003623 B1 EP 0003623B1 EP 79200048 A EP79200048 A EP 79200048A EP 79200048 A EP79200048 A EP 79200048A EP 0003623 B1 EP0003623 B1 EP 0003623B1
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EP
European Patent Office
Prior art keywords
cavities
lid
package according
goods
closure
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
EP79200048A
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German (de)
French (fr)
Other versions
EP0003623A1 (en
Inventor
Pál István Petranyi
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.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
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Publication date
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Publication of EP0003623A1 publication Critical patent/EP0003623A1/en
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Publication of EP0003623B1 publication Critical patent/EP0003623B1/en
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
    • B65D85/00—Containers, packaging elements or packages, specially adapted for particular articles or materials
    • B65D85/70—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for
    • B65D85/72—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials
    • B65D85/74—Containers, packaging elements or packages, specially adapted for particular articles or materials for materials not otherwise provided for for edible or potable liquids, semiliquids, or plastic or pasty materials for butter, margarine, or lard
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S229/00—Envelopes, wrappers, and paperboard boxes
    • Y10S229/902—Box for prepared or processed food
    • Y10S229/905—Frozen food

Definitions

  • the present invention relates to a packaging for solid or pasty filling material which has a tendency to sit or stick to the packaging material and relates in particular to the closure part of this packaging.
  • the packaging is primarily intended for fats and fatty foods, especially margarine.
  • the packaging and the closure part can be made of any suitable material and also any common shape such as Have a box, mug, bowl, etc. However, the material of the closure part should be impermeable to the contents on its side facing the contents and should be permanently deformable.
  • Known packaging materials such as aluminum and plastic films, as well as cardboard coated with plastic can be used.
  • FR-A-1 157 785 describes a packaging in which a plastic film as a cylindrical outer surface surrounds a soft, plastic mass.
  • the film is embossed in a pattern that results in a decoration of the surface of the mass.
  • the film can be bent up to 180 ° and then peeled off like a skin from the mass without wrinkling, without damaging the decorative pattern on the mass.
  • a relief e.g. produced in the form of a flower on a soft margarine using a container that serves as a shape.
  • a thin and very flexible film is inserted between the container and margarine, which can later be removed from the shaped surface of the margarine.-These solutions cannot be used for closure parts for cups, bowls and cartons, since these closure parts are made of less flexible material and mostly are provided with edges that hinder a sufficient bending.
  • the surface of the closure part facing the filling material is provided with a large number of individual and independent recessed parts, cups, dimples or the like. (hereinafter referred to as "depressions"), which are separated by ribs or surfaces and are arranged and shaped such that air or another gas is enclosed when the closure part is placed and pressed on, as a result of which the filling material does not fill these depressions.
  • the closure part provided with the depressions can be the lid of a bowl or a cup formed from an aluminum or plastic, a separate strip of this material, which is placed on the contents under a lid, or above a removable wall surface of a folding box made of plastic coated Carton.
  • the ribs or surfaces between the depressions result in an imprint on the top of the filling material, which is retained when the closure part is removed.
  • the shape of the individual small elevations on the top of the content shows that these elevations have not filled the depressions of the closure part.
  • the shape, size and arrangement of the depressions according to the invention can be varied to a large extent.
  • the possibilities given by the packaging material for the formation of the depressions, the properties of the filling material and, if applicable, also the methods for placing and pressing on the closure part must be observed.
  • the surface of the ribs or surfaces which run continuously between the depressions and which are directed against the filling material is up to 90% of the total surface of the closure part placed on the filling material.
  • the open area of a depression can have a size of 1 mm 2-30 mm 2 , this open area being measured approximately in the plane of the surface of the connected ribs or areas.
  • the maximum depth of the depressions is preferably 0.15-1.5 mm, but may also be greater if necessary.
  • the depressions can have any cross-section and can be, for example, round, oval, square or triangular.
  • the closure part of the packaging consists of a plastic film into which depressions are embossed at least on its surface to be placed on the filling material.
  • the embossing can, for example, take place in a known manner immediately after its production on a suitable calender. With polystyrene foils produced in this way and placed on top of margarine immediately after filling in trays, it was found that almost no margarine stuck to the top sheets.
  • the depressions, or the ribs connected between them were produced by deep drawing. It is advantageous to carry out the deep-drawing of the surface of the closure part to be placed on the filling material for lids for cups or bowls simultaneously with the other usual deformations of the lid. This results in a corresponding pattern on the outer side of the lid. In this case, the material for the lids is printed before deep-drawing. Both the depressions to be produced by embossing and deep-drawing in the closure parts can have an open area of 1 mm 2 to 25 mm 2 .
  • Another version has depressions that are approximately oval and have an open area of 0.8 x 0.1 mm to 2.0 x 0.5 mm. These depressions were arranged in rows next to each other and with an alternating longitudinal direction.
  • a pattern of depressions of the type described above results, for example, when a wire mesh is pressed onto a packaging material.
  • embossing with a wire mesh care must be taken that the individual indentations which are pressed in are essentially not in contact with one another, but are separated from one another by ribs or surfaces which are not embossed.
  • Such a way of making depressions is particularly suitable for cardboard material coated with plastic.
  • a packaging according to the invention which consists of a folding box and a lid, the depressions are at least stamped into the side of the lid to be placed on the contents.
  • Fig. Shows a section of a deep-drawn film
  • Fig. 2 shows a section through part of a cup with a deep-drawn lid
  • Fig. 3 shows a section through a film with depressions, which were produced by embossing
  • Fig. 4 shows a section through a cardboard material provided with depressions
  • Fig. 5 shows a folding box
  • FIG. 1 shows the side of a thermoformed film made of polystyrene or polyvinyl chloride to be placed on the filling material.
  • the film is, for example, 0.2 mm thick.
  • a number of depressions 1 have been created by deep drawing, between which continuous ribs 2 run.
  • the depressions have an open rectangular cross section in the plane of the ribs 2 of a x b and a depth relative to the plane of the ribs of t.
  • the width of the ribs is denoted by s.
  • the side walls 3 of the depressions 1 run at an angle of approximately 60 ° to the plane of the ribs 2.
  • the edges between the surfaces of the ribs and depressions can also be slightly rounded.
  • FIG. 2 shows a deep-drawn cup lid 10 on a cup 11 which is filled with margarine 12.
  • the lid 10 lies with the ribs 2 on the margarine and penetrates a little into its surface.
  • the side walls 3 run at an angle of 45 °. Air cushions form in the depressions 1 and are separated from one another by the contact of the ribs 2 with the surface of the margarine 12.
  • Lids which were deep-drawn from a film of 0.2 mm thickness and had patterns according to FIGS. 1 and 2 were placed on margarine beakers, which was an opening cross section of about 12.5 x 8.5 cm with rounded corners.
  • the depressions 1 had the shape of square truncated pyramids.
  • the lids were mechanically placed on fresh margarine. After storage at 15 ° C for 3 and 6 weeks, the lids were removed.
  • Table 1 shows how much margarine stuck to the removed lids in samples of different dimensions.
  • the margarine that was still present in the lids with recesses was mainly in the vicinity of the lid edges, where the surface of the margarine had apparently been pushed aside by the lid.
  • FIG. 3 shows a film 22 into which square depressions 21 are embossed.
  • the film had a thickness d of 0.35 mm and the depth of the impressions was t equal to 0.15 mm.
  • the edge length a of the impressions was 1 mm and the width of the webs s remaining between the depressions was 0.5 mm.
  • the folding box 34 shown in FIG. 5 has a hinged lid 35, on the inside 36 of which the contents 37 adhered.
  • the lid was therefore difficult to open.
  • the adhesion could be significantly reduced by a pattern embossed on the inside 36 of the cardboard material (32), which is indicated in FIG. 5.
  • FIG. 4 shows a section through this cardboard material.
  • the wire mesh used in this example had a mesh size of 1 ⁇ 1 mm and a wire thickness of 0.35 mm and gave about 64 depressions per cm 2 .
  • the use of other wire grids also showed that less force was required to open the package and less margarine stuck to the lid. With these patterns too, the embossing may only take place to such an extent that the depressions 31 do not have a connection with one another. Lid surfaces in which the depressions 31 were connected to one another gave no better result than smooth lids.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Packages (AREA)
  • Packging For Living Organisms, Food Or Medicinal Products That Are Sensitive To Environmental Conditiond (AREA)
  • Closures For Containers (AREA)
  • Cartons (AREA)

Description

Die vorliegende Erfindung betrifft eine Verpackung für festes oder pastöses Füllgut, das die Neigung hat, an dem Verpackungsmaterial sitzen oder haften zu bleiben, und bezieht sich insbesondere auf das Verschlussteil dieser Verpackung. Die Verpackung ist vor allem für Fette und fetthaltige Lebensmittel, besonders für Margarine vorgesehen. Verpackung und Verschlussteil können aus jedem geeigneten Material bestehen und auch jede übliche Form wie z.B. Schachtel, Becher, Schale usw. besitzen. Das Material des Verschlussteiles sollte jedoch an seiner dem Inhalt zugewandten Seite für das Füllgut undurchlässig sein und dauerhaft verformt werden können. Bekannte Verpackungsmaterialien wie Aluminium- und Kunststoffolien, sowie auch mit Kunststoff beschichteter Karton können verwendet werden.The present invention relates to a packaging for solid or pasty filling material which has a tendency to sit or stick to the packaging material and relates in particular to the closure part of this packaging. The packaging is primarily intended for fats and fatty foods, especially margarine. The packaging and the closure part can be made of any suitable material and also any common shape such as Have a box, mug, bowl, etc. However, the material of the closure part should be impermeable to the contents on its side facing the contents and should be permanently deformable. Known packaging materials such as aluminum and plastic films, as well as cardboard coated with plastic can be used.

Bei bekannten Verpackungen, für beispielsweise Margarine, tritt das Problem auf, dass der Deckel an dem Inhalt haften bleibt, hierdurch nur schwer abzunehmen ist und daher ein Teil des Inhalts mit dem Deckel aus der Verpackung herausgezogen wird. Es ist bisher keine befriedigende Lösung bekannt, die das Haften des inhalts an der Innenseite des Deckels in ausreichendem Masse verringern könnte.In known packaging, for example margarine, the problem arises that the lid sticks to the content, which makes it difficult to remove, and therefore part of the content is pulled out of the packaging with the lid. So far, no satisfactory solution has been known which could sufficiently reduce the adherence of the contents to the inside of the cover.

In FR-A-1 157 785 ist eine Verpackung beschrieben, bei der eine Kunststoffolie als cylindrische Mantelfläche eine weiche, plastische Masse umgibt. Die Folie ist in einem Muster geprägt, das eine Dekoration der Oberfläche der Masse ergibt. Die Folie lässt sich un bis zu 180° umbiegen und dann wie eine Haut von der Masse ohne Faltenbildung abziehen, ohne dass das dekorative Muster auf der Masse beschädigt wird.-Nach NL-A-7007970 wird ein Relief z.B. in Form einer Blume auf einer weichen Margarine mittels eines als Form dienenden Behälters erzeugt. Zwischen Behälter und Margarine ist eine dünne und sehr biegsame Folie eingelegt, die später von der geformten Oberfläche der Margarine abgezogen werden kann.-Diese Lösungen sind bei Verschlussteilen für Becher, Schalen und Kartons nicht anwendbar, da diese Verschlussteile aus weniger biegsamem Material bestehen und meist mit Rändern versehen sind, die ein genügendes Umbiegen behindern.FR-A-1 157 785 describes a packaging in which a plastic film as a cylindrical outer surface surrounds a soft, plastic mass. The film is embossed in a pattern that results in a decoration of the surface of the mass. The film can be bent up to 180 ° and then peeled off like a skin from the mass without wrinkling, without damaging the decorative pattern on the mass.-According to NL-A-7007970, a relief e.g. produced in the form of a flower on a soft margarine using a container that serves as a shape. A thin and very flexible film is inserted between the container and margarine, which can later be removed from the shaped surface of the margarine.-These solutions cannot be used for closure parts for cups, bowls and cartons, since these closure parts are made of less flexible material and mostly are provided with edges that hinder a sufficient bending.

Nach der vorliegenden Erfindung ist die dem Füllgut zugewandte Oberfläche des Verschlussteiles mit einer Vielzahl einzelner und voneinander unabhängiger vertiefter Teile, Näpfe, Grübchen o.ä. (im folgenden Text mit "Vertiefungen" bezeichnet) versehen, die durch Rippen oder Flächen getrennt und so angeordnet und geformt sind, dass beim Auflegen und Andrücken des Verschlussteiles Luft oder ein anderes Gas eingeschlossen wird, wodurch das Füllgut diese Vertiefungen nicht ausfüllt. Das mit den Vertiefungen versehene Verschlussteil kann der aus einer Aluminium- oder Kunststofflie gebildete Deckel einer Schale oder eines Bechers sein, ein gesonderter Streifen aus diesem Material, der auf den Inhalt unter einem Deckel aufgelegt wird, ober eine abnehmbare Wandfläche einer Faltschachtel aus mit Kunststoff beschichtetem Karton.According to the present invention, the surface of the closure part facing the filling material is provided with a large number of individual and independent recessed parts, cups, dimples or the like. (hereinafter referred to as "depressions"), which are separated by ribs or surfaces and are arranged and shaped such that air or another gas is enclosed when the closure part is placed and pressed on, as a result of which the filling material does not fill these depressions. The closure part provided with the depressions can be the lid of a bowl or a cup formed from an aluminum or plastic, a separate strip of this material, which is placed on the contents under a lid, or above a removable wall surface of a folding box made of plastic coated Carton.

Überraschenderweise ergab sich, dass ein Verschlussteil, dessen dem Inhalt zugewandte Seite mit kleinen Vertiefungen, Näpfchen o.ä. versehen war, weniger und teilweise sogar überhaupt nicht an dem Inhalt haften blieb. Im Gegensatz hierzu zeigten Oberflächen, bei denen die Vertiefungen miteinander verbunden waren wenigstens dieselbe Haftung an dem Füllgut, wie eine glatte Oberfläche des Verschlussteils. Man kann daher annehmen, dass ins den kleinen, voneinander unabhängigen Vertiefungen durch den Kontakt der Ränder dieser Vertiefungen mit der Oberfläche des Füllgutes Luft oder ein Gas eingeschlossen wird. Die Luftpolster in den Vertiefungen werden anscheinend durch den Inhalt der Verpackung ein wenig zusammengedrückt und unterstützen später die Trennung des Verschlussteiles von der Füllgutoberfläche, wenn das Verschlussteil abgenommen wird. Die Rippen oder Flächen zwischen den Vertiefungen ergeben einen Abdruck auf der Oberseite des Füllgutes, welcher beim Abnehmen des Verschlussteiles erhalten bleibt. Die Form der einzelnen kleinen Erhebungen auf der Oberseite des Inhalts zeigt, dass diese Erhebungen die Vertiefungen des Verschlussteiles nicht ausgefüllt haben.Surprisingly, it was found that a closure part, the side facing the content with small depressions, cups or the like. was provided, less and sometimes not at all adhered to the content. In contrast to this, surfaces in which the depressions were connected to one another showed at least the same adhesion to the filling material as a smooth surface of the closure part. It can therefore be assumed that air or a gas is enclosed in the small, mutually independent depressions by the contact of the edges of these depressions with the surface of the filling material. The air cushions in the recesses are apparently compressed a little by the contents of the packaging and later support the separation of the closure part from the product surface when the closure part is removed. The ribs or surfaces between the depressions result in an imprint on the top of the filling material, which is retained when the closure part is removed. The shape of the individual small elevations on the top of the content shows that these elevations have not filled the depressions of the closure part.

Form, Grösse und Anordnung der Vertiefungen nach der Erfindung können in einem weiten Ausmasse verändert werden. Dabei sind die durch das Verpackungsmaterial gegebenen Möglichkeiten für die Ausformung der Vertiefungen, die Eingenschaften des Füllgutes und gegebenenfalls auch die Verfahren zum Auflegen und Andrücken des Verschlussteiles zu beachten. Nach der Erfindung beträgt die Oberfläche der zwischen den Vertiefungen zusammenhängend verlaufenden Rippen oder Flächen, die gegen das Füllgut gerichtet sind, bis zu 90% der auf das Füllgut aufgelegten Gesamtfläche des Verschlussteils. Die offene Fläche einer Vertiefung kann eine Grösse von 1 mm2-30 mm2 besitzen, wobei diese offene Fläche etwa in der Ebene der Oberfläche der zusammenhängenden Rippen oder Flächen zu messen ist. Die maximale Tiefe der Vertiefungen beträgt vorzugsweise 0,15-1,5 mm, kann gegebenenfalls aber auch noch grösser sein. Die Vertiefungen können einen beliebigen Querschnitt besitzen und beispielsweise rund, oval, quadratisch oder dreieckig sein. Beim Auflegen der Verschlussteile ist darauf zu achten, dass die Rippen rund um die Vertiefung durch den Kontakt mit der Oberfläche des Inhalts den Raum der Vertiefungen abschliessen, bevor aus diesem die Luft entweicht. Bei Oberflächen, die vor dem Auflegen des Verschlussteiles bereits verhältnismässig eben sind, sind wenige flache Vertiefungen ausreichend. Wird dagegen durch Aufdrücken des Verschlussteiles das Füllgut erst verteilt und eine etwa ebene Oberfläche erzeugt, sind optimale Abmessungen zu ermitteln.The shape, size and arrangement of the depressions according to the invention can be varied to a large extent. The possibilities given by the packaging material for the formation of the depressions, the properties of the filling material and, if applicable, also the methods for placing and pressing on the closure part must be observed. According to the invention, the surface of the ribs or surfaces which run continuously between the depressions and which are directed against the filling material is up to 90% of the total surface of the closure part placed on the filling material. The open area of a depression can have a size of 1 mm 2-30 mm 2 , this open area being measured approximately in the plane of the surface of the connected ribs or areas. The maximum depth of the depressions is preferably 0.15-1.5 mm, but may also be greater if necessary. The depressions can have any cross-section and can be, for example, round, oval, square or triangular. When placing the closure parts, make sure that the ribs around the recess close the space of the recesses through contact with the surface of the contents before the air escapes from it. For surfaces that a few shallow depressions are sufficient before the closure part is already flat. If, on the other hand, the filling material is first distributed by pressing on the closure part and an approximately flat surface is produced, optimal dimensions must be determined.

In einer bevorzugten Ausführung besteht das Verschlussteil der Verpackung aus einer Kunststoffolie, in die wenigstens auf ihrer auf das Füllgut aufzulegenden Oberfläche Vertiefungen geprägt sind. Die Prägung kann beispielsweise unmittelbar nach ihrer Herstellung auf einem geeigneten Kalander in bekannter Weise erfolgen. Mit Polystyrolfolien, die in dieser Weise hergestellt und als Deckblätter auf Margarine unmittelbar nach ihrer Abfüllung in Schalen aufgelegt wurden, konnte festgestellt werden, dass beinahe keine Margarine mehr an den Deckblättern haften blieb.In a preferred embodiment, the closure part of the packaging consists of a plastic film into which depressions are embossed at least on its surface to be placed on the filling material. The embossing can, for example, take place in a known manner immediately after its production on a suitable calender. With polystyrene foils produced in this way and placed on top of margarine immediately after filling in trays, it was found that almost no margarine stuck to the top sheets.

In einer anderen bevorzugten Ausführung eines Verschlussteiles aus Kunststoffolie wurden die Vertiefungen, beziehungsweise die zwischen ihnen miteinander verbundenen Rippen durch Tiefziehen erzeugt. Es ist vorteilhaft, das Tiefziehen der auf das Füllgut aufzulegenden Fläche des Verschlussteiles bei Deckeln für Becher oder Schalen gleichzeitig mit den übrigen üblichen Verformungen des Deckels vorzunehmen. Dies ergibt ein entsprechendes Muster auf der äusseren Seite des Deckels. Eine Bedruckung des Materials für die Deckel wird in diesem Falle vor dem Tiefziehen vorgenommen. Sowohl die durch Prägungen als auch durch Tiefziehen in den Verschlussteilen herzustellenden Vertiefungen können eine offene Fläche von 1 mm2 bis 25 mm2 besitzen.In another preferred embodiment of a closure part made of plastic film, the depressions, or the ribs connected between them, were produced by deep drawing. It is advantageous to carry out the deep-drawing of the surface of the closure part to be placed on the filling material for lids for cups or bowls simultaneously with the other usual deformations of the lid. This results in a corresponding pattern on the outer side of the lid. In this case, the material for the lids is printed before deep-drawing. Both the depressions to be produced by embossing and deep-drawing in the closure parts can have an open area of 1 mm 2 to 25 mm 2 .

Bei tiefgezogenen Deckeln wurde eine gute Trennung des Deckels von einer Margarine-Oberfläche erreicht, wenn die Tiefe der Vertiefungen 0,3 bis 1,2 mm betrug.With deep-drawn lids, good separation of the lid from a margarine surface was achieved if the depth of the depressions was 0.3 to 1.2 mm.

Die besten Ergebnisse werden bei tiefgezogenen Deckeln für Margarinebecher erreicht, wenn die offene Fläche einer jeden Vertiefung 2,0--6,5 mm2 und die Tiefe der Vertiefungen 0,4 bis 0,6 mm beträgt, wobei die seitlichen Wände der Vertiefungen im Winkel von etwa 60° zur gemeinsamen Oberfläche der Rippen verlaufen. Bei tiefgezogenen Deckeln wird eine Form der Vertiefung bevorzugt, die einem Pyramidenstumpf mit etwa quadratischem Querschnitt entspricht. Bei Deckeln für Schalen, deren Länge grösser ist als ihre Breite, hat es sich als zweckmässig herausgestellt, die quadratischen Vertiefungen so in dem Deckel anzuordnen, dass eine Diagonale der offenen Flächen sich in Längsrichtung der Schale befindet.The best results are achieved with deep-drawn lids for margarine cups if the open area of each well is 2.0--6.5 mm 2 and the depth of the wells is 0.4 to 0.6 mm, with the side walls of the wells in the Angles of about 60 ° to the common surface of the ribs. In the case of deep-drawn lids, a shape of the depression is preferred which corresponds to a truncated pyramid with an approximately square cross section. In the case of lids for trays, the length of which is greater than their width, it has proven expedient to arrange the square depressions in the lid in such a way that a diagonal of the open surfaces is in the longitudinal direction of the tray.

Eine andere Ausführung besitzt Vertiefungen, die etwa oval sind und eine offene Fläche von 0,8 x 0,1 mm bis 2,0 x 0,5 mm besitzen. Diese Vertiefungen waren in Reihen neben einander und mit einer wechselnder Längsrichtung angeordnet. Ein Muster von Vertiefungen der vorstehend beschriebenen Art ergibt sich beispielsweise, wenn ein Drahtgewebe auf ein Verpackungsmaterial gedrückt wird. Bei einer Prägung mit einem Drahtgewebe ist jedoch darauf zu achten, dass die einzelnen, eingedrückten Vertiefungen im wesentlichen nicht miteinander in Berührung stehen, sondern durch Rippen oder Flächen, die nicht geprägt sind, von einander getrennt werden. Eine solche Weise zum Anbringen von Vertiefungen eignet sich insbesondere für mit Kunststoff beschichtetes Kartonmaterial. Bei einer Verpackung nach der Erfindung, die aus einer Faltschachtel und einem Deckel besteht, sind die Vertiefungen wenigstens in die auf den Inhalt aufzulegende Seite des Deckels eingeprägt.Another version has depressions that are approximately oval and have an open area of 0.8 x 0.1 mm to 2.0 x 0.5 mm. These depressions were arranged in rows next to each other and with an alternating longitudinal direction. A pattern of depressions of the type described above results, for example, when a wire mesh is pressed onto a packaging material. When embossing with a wire mesh, however, care must be taken that the individual indentations which are pressed in are essentially not in contact with one another, but are separated from one another by ribs or surfaces which are not embossed. Such a way of making depressions is particularly suitable for cardboard material coated with plastic. In the case of a packaging according to the invention, which consists of a folding box and a lid, the depressions are at least stamped into the side of the lid to be placed on the contents.

Durch die Anwendung von Vertiefungen konnte insbesondere die Haftung von Verschlussteilen auf Margarine in Verpackungen, die unmittelbar nach dem Einfüllen der Margarine verschlossen wurden, und in denen die Margarine erst im Laufe der folgenden Tage vollständig auskristallisierte, deutlich verringert werden.The use of recesses, in particular, significantly reduced the adhesion of closure parts to margarine in packaging that was sealed immediately after the margarine was filled in and in which the margarine only fully crystallized in the course of the following days.

Einige Ausführungsbeispiele sind auf den beigefügten Zeichnungen schematisch dargestellt und werden nachstehend beschrieben.Some embodiments are shown schematically in the accompanying drawings and are described below.

Fig. zeigt einen Ausschnitt aus einer tiefgezogenen Folie;Fig. Shows a section of a deep-drawn film;

Fig. 2 zeigt einen Schnitt durch einen Teil eines Bechers mit einem tiefgezogenen Deckel;Fig. 2 shows a section through part of a cup with a deep-drawn lid;

Fig. 3 zeigt einen Schnitt durch eine Folie mit Vertiefungen, die durch Prägen erzeugt wurden;Fig. 3 shows a section through a film with depressions, which were produced by embossing;

Fig. 4 zeigt einen Schnitt durch ein mit Vertiefungen versehenes Kartonmaterial;Fig. 4 shows a section through a cardboard material provided with depressions;

Fig. 5 zeigt eine Faltschachtel.Fig. 5 shows a folding box.

Fig. 1 zeigt die auf das Füllgut aufzulegende Seite einer tiefgezogenen Folie aus Polystyrol oder Polyvinylchlorid. Die Folie ist beispielsweise 0,2 mm dick. Durch Tiefziehen ist eine Anzahl von Vertiefungen 1 geschaffen worden, zwischen denen zusammenhängende Rippen 2 verlaufen. Die Vertiefungen haben einen offenen rechteckigen Querschnitt in der Ebene der Rippen 2 von a x b und eine Tiefe gegenüber der Ebene der Rippen von t. Die Breite der Rippen ist mit s bezeichnet. Die Seitenwände 3 der Vertiefungen 1 verlaufen in einem Winkel von etwa 60° zu der Ebene der Rippen 2. Die Kanten zwischen de Flächen der Rippen und Vertiefungen können auch leicht abgerundet sein.1 shows the side of a thermoformed film made of polystyrene or polyvinyl chloride to be placed on the filling material. The film is, for example, 0.2 mm thick. A number of depressions 1 have been created by deep drawing, between which continuous ribs 2 run. The depressions have an open rectangular cross section in the plane of the ribs 2 of a x b and a depth relative to the plane of the ribs of t. The width of the ribs is denoted by s. The side walls 3 of the depressions 1 run at an angle of approximately 60 ° to the plane of the ribs 2. The edges between the surfaces of the ribs and depressions can also be slightly rounded.

In Fig. 2 ist ein tiefgezogener Becherdeckel 10 auf einem Becher 11, der mit Margarine 12 gefüllt ist, dargestellt. Der Deckel 10 liegt mit den Rippen 2 auf der Margarine auf und dringt ein wenig in ihre Oberfläche ein. Bei diesem Beispiel verlaufen die Seitenwände 3 in einem Winkel von 45°. In den Vertiefungen 1 bilden sich Luftpolster, die durch den Kontakt der Rippen 2 mit der Oberfläche der Margarine 12 von einander getrennt werden.2 shows a deep-drawn cup lid 10 on a cup 11 which is filled with margarine 12. The lid 10 lies with the ribs 2 on the margarine and penetrates a little into its surface. In this example, the side walls 3 run at an angle of 45 °. Air cushions form in the depressions 1 and are separated from one another by the contact of the ribs 2 with the surface of the margarine 12.

Deckel, die aus einer Folie von 0,2 mm Dicke tiefgezogen waren und Muster gemäss Fig. 1 und 2 besassen, wurden auf Margarinebecher aufgelegt, welch einen Öffnungsquerschnitt von etwa 12,5 x 8,5 cm mit abgerundeten Ecken besassen. Die Vertiefungen 1 hatten die Form quadratischer Pyramidenstümpfe. Die Deckel wurden mechanisch auf frische Margarine aufgelegt. Nach Lagerung bei 15°C während 3 und 6 Wochen wurden die Deckel abgenommen.Lids which were deep-drawn from a film of 0.2 mm thickness and had patterns according to FIGS. 1 and 2 were placed on margarine beakers, which was an opening cross section of about 12.5 x 8.5 cm with rounded corners. The depressions 1 had the shape of square truncated pyramids. The lids were mechanically placed on fresh margarine. After storage at 15 ° C for 3 and 6 weeks, the lids were removed.

Tabelle 1 zeigt, wieviel Margarine bei Mustern mit verschiedenen Abmessungen an den abgenommenen Deckeln haften blieb.

Figure imgb0001
Table 1 shows how much margarine stuck to the removed lids in samples of different dimensions.
Figure imgb0001

Die bei den Deckeln mit Vertiefungen noch vorhandene Margarine befand sich überwiegend in der Nähe der Deckelränder, wo die Oberfläche der Margarine offenbar durch den Deckel stärker zur Seite gedrückt worden war.The margarine that was still present in the lids with recesses was mainly in the vicinity of the lid edges, where the surface of the margarine had apparently been pushed aside by the lid.

In Fig. 3 ist eine Folie 22 dargestellt, in die quadratische Vertiefungen 21 eingeprägt sind. Die Folie hatte eine Dicke d von 0,35 mm und die Tiefe der Einprägungen war t gleich 0,15 mm. Die Kantenlänge a der Einprägungen betrug 1 mm und die Breite der zwischen den Vertiefungen verbleibenden Stege s war 0,5 mm. Diese Follen 22 wurden als Deckblätter auf die frische Margarine in Bechern aufgelegt; die mit einem zusätzlichen Deckel verschlossenen Margarinebecher wurden bei 15°C etwa 6 Wochen gelagert, dann auf 20°C erwärmt, und es zeigte sich beim Abziehen dieser Deckblätter, dass kaum Margarine an der geprägten Seite der Folien haften blieb. Von der gleichen Folie wurden auch Deckblätter mit der glatten Seite auf die Margarine aufgelegt, worauf dieselbe Behandlung erfolgte. Beim Abnehmen ergab sich, dass nahezu die gesamte Fläche der glatten Seite mit Margarine bedeckt war.3 shows a film 22 into which square depressions 21 are embossed. The film had a thickness d of 0.35 mm and the depth of the impressions was t equal to 0.15 mm. The edge length a of the impressions was 1 mm and the width of the webs s remaining between the depressions was 0.5 mm. These rolls 22 were placed on top of the fresh margarine in beakers; the margarine beakers sealed with an additional lid were stored at 15 ° C. for about 6 weeks, then warmed to 20 ° C., and it was found when these cover sheets were removed that hardly any margarine stuck to the embossed side of the foils. Cover sheets with the smooth side of the same film were also placed on the margarine, after which the same treatment was carried out. When losing weight, it turned out that almost the entire surface of the smooth side was covered with margarine.

Aus Untersuchungen mit Margarinesorten verschiedener Zusammensetzung und mit verschiedenen Kunststoffolien konnte entnommen werden, dass die Anordnung von Vertiefungen in der auf das Fülgut aufzulegenden Seite des Verschlussteiles imer einen deutlichen Vorteil gegenüber der Verwendung desselben Materials ohne Vertiefungen brachte, und dass der Einfluss sowohl des Verpackungsmateriales als auch der Zusammensetzung des Inhalts und der Temperatur verhältnismässig gering ist, wie Tabelle 2 zeigt.From studies with margarine types of different composition and with different plastic films, it could be seen that the arrangement of depressions in the side of the closure part to be placed on the filling material always brought a clear advantage over the use of the same material without depressions, and that the influence of both the packaging material and the composition of the content and the temperature is relatively low, as shown in Table 2.

Die in Fig. 5 gezeigte Faltschachtel 34 besitzt einen aufklappbaren Deckel 35, an dessen Innenseite 36 der Inhalt 37 haftete. Der Deckel war daher schwer zu öffnen. Durch ein auf der Innenseite 36 des Kartonmaterials (32) geprägtes Muster, welches in Fig. 5 angedeutet ist, konnte die Haftung wesentlich herabgesetzt werden. In das auf der Innenseite mit Polyäthylen beschichtete, kunststoffhaltige Kartonmaterial wurde beispielsweise mit Hilfe eines Drahtgitters dieses Muster eingeprägt. Es bestand aus versetzt zu einander angeordneten Vertiefungen 31, welche dem Abdruck des Drahtgitters ensprechend oval waren und Abmessungen von a x b = 1,0 x 0,3 bis 1,0 x 0,1 mm besassen. Eine maximale Tiefe t der Einprägungen wurde bis zu 0,25 mm festgestellt. Einen Schnitt durch dieses Kartonmaterial zeigt Fig. 4. Das bei diesem Beispiel verwendete Drahtgitter hatte eine Maschenweite von 1 x 1 mm und eine Drahtstärke von 0,35 mm und ergab etwa 64 Vertiefungen pro cm2. Die Verwendung anderer Drahtgitter ergab jedoch ebenfalls, dass weniger Kraft zum Öffnen der Verpackung notwendig war und dass an dem Deckel weniger Margarine haften blieb. Auch bei diesen Mustern darf die Einprägung nur so weit erfolgen, dass die Vertiefungen 31 nicht eine Verbindung untereinander besitzen. Deckelflächen, bei denen die Vertiefungen 31 miteinander verbunden waren, gaben kein besseres Ergebnis als glatte Deckel.The folding box 34 shown in FIG. 5 has a hinged lid 35, on the inside 36 of which the contents 37 adhered. The lid was therefore difficult to open. The adhesion could be significantly reduced by a pattern embossed on the inside 36 of the cardboard material (32), which is indicated in FIG. 5. This pattern was embossed into the plastic-containing cardboard material coated on the inside with polyethylene, for example with the help of a wire mesh. It consisted of recesses 31 arranged offset from one another, which were oval in accordance with the imprint of the wire mesh and had dimensions of axb = 1.0 x 0.3 to 1.0 x 0.1 mm. A maximum depth t of the impressions was found up to 0.25 mm. FIG. 4 shows a section through this cardboard material. The wire mesh used in this example had a mesh size of 1 × 1 mm and a wire thickness of 0.35 mm and gave about 64 depressions per cm 2 . However, the use of other wire grids also showed that less force was required to open the package and less margarine stuck to the lid. With these patterns too, the embossing may only take place to such an extent that the depressions 31 do not have a connection with one another. Lid surfaces in which the depressions 31 were connected to one another gave no better result than smooth lids.

Die gute Trennwirkung der verschiedenen Muster von Vertiefungen war nicht nut daraus zu ersehen, dass die Verschlussteile, mit Ausnahme einiger weniger Stellen insbesondere an den Rändern, vollständig frei von dem hieran haftenden Inhalt waren, sondern es konnte auch festgestellt werden, in welchem Masse weniger kraft zum Anheben des Verschlussteiles notwendig war, wie folgende Tabelle 2 zeigt, dieThe good separating effect of the different patterns of depressions could not be seen only from the fact that the closure parts, with the exception of a few places, particularly at the edges, were completely free of this adhesive content, but it was also possible to determine to what extent less force was required to lift the closure part, as shown in Table 2 below, which

auf Untersuchungen mit den im Zusammenhang mit Fig. 3 beschriebenen Deckblättern beruht:based on investigations with the cover sheets described in connection with FIG. 3:

Figure imgb0002
Figure imgb0002

Claims (9)

1. Package for solid or pasty goods which have the tendency to adhere to the packaging material, particularly for fats and fat-containing foodstuffs, with a closure consisting of material that is impervious to the goods to be packaged and can be durably deformed, characterized in that the side of the closure (10, 22, 35) facing the goods to packaged is provided with a great number of separate cavities (1, 21, 31) independent of each other and separated by ribs (2) or flat surfaces, said cavities being arranged and shaped in such a way that when the closure is put on and pushed down against the goods (12, 37) to be packaged, the ribs (2) or flat surfaces shut off the gas-containing cavities (1, 21, 31) through contact with the surface of the goods to be packaged (12, 37), as a result of which these cavities cannot get filled up with the goods to be packaged.
2. Package according to claim 1, characterized in that the open areas (a x b) of a cavity (1, 21, 31) have a size of 1 mm2 to 30 mm2, measured in the plane of the upper side of the interconnected ribs (2) or flat surfaces and that the maximum depth (t) of the cavities is 0.15 to 1.5 mm.
3. Package according to claim 1 or 2, characterized in that the closure consists of a plastics film (22), in which cavities (21) have been embossed in the surface to be placed on the goods to be packaged.
4. Package according to claim 1 or 2, characterized in that the closure consists of a plastics film, in which the pattern consisting of separate cavities and interconnected ribs (2) or flat surfaces was obtained by deep-drawing.
5. Package according to claim 4, consisting of a beaker and a lid as closure for the beaker, characterized in that the pattern in the flat side of the lid was obtained simultaneously with the other deformations of the lid (10) by deep-drawing.
6. Package according to claim 4 or 5, characterized in that the cavities (1) have the form of a truncated pyramid with a rectangular cross-section and an angle of the side walls (3) of 45 to 60°.
7. Package according to claim 6, characterized in that the open area (a x b) of each cavity (1) has a size of 2 to 6.5 mm2 and a depth of 0.4 to 0.6 mm.
8. Package according to claim 1 or 2, consisting of a folding box and a lid of plastic- coated cardboard, characterized in that the cavities (31) have been embossed in the side of at least the lid to be placed on the contents.
9. Package according to claim 4 or 8, characterized in that the cavities (31) are oval, have an open area (a x h) of 0.8 x 0.1 mm to 2.0 x 0.5 mm and have been arranged in rows next to each other with a varying longitudinal direction of the cavities.
EP79200048A 1978-02-07 1979-01-25 Packing material for solid or pasty fillings Expired EP0003623B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7801366 1978-02-07
NL7801366.A NL166235C (en) 1978-02-07 1978-02-07 PACKAGING WITH FIXED OR PASTEL WHERE THE TEND HAS TO STICK TO THE PACKAGING MATERIAL.

Publications (2)

Publication Number Publication Date
EP0003623A1 EP0003623A1 (en) 1979-08-22
EP0003623B1 true EP0003623B1 (en) 1980-12-10

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EP79200048A Expired EP0003623B1 (en) 1978-02-07 1979-01-25 Packing material for solid or pasty fillings

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US (1) US4211328A (en)
EP (1) EP0003623B1 (en)
JP (1) JPS54123395A (en)
AR (1) AR219371A1 (en)
AT (1) AT363849B (en)
CA (1) CA1096342A (en)
DE (2) DE2960052D1 (en)
ES (1) ES241217Y (en)
FI (1) FI63722C (en)
IE (1) IE47913B1 (en)
NL (1) NL166235C (en)
PT (1) PT69186A (en)
ZA (1) ZA79498B (en)

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US5293999A (en) * 1993-02-09 1994-03-15 Minnesota Mining And Manufacturing Company Dispenser for padded tape handles
DE10202752B4 (en) * 2002-01-25 2004-09-23 Benecke-Kaliko Ag Process for producing a molded part which is deep-drawn from a thermoplastic film and embossing roller for embossing the surface of a thermoplastic film intended for deep-drawing purposes
US20070276179A1 (en) * 2002-11-15 2007-11-29 Paracor Medical, Inc. Method of loading a cardiac harness in a housing
US20100059395A1 (en) * 2008-05-02 2010-03-11 John England Pack for Smoking Articles

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Publication number Priority date Publication date Assignee Title
US1808136A (en) * 1929-05-09 1931-06-02 Holed Tite Packing Corp Packing for fragile articles
FR1108036A (en) * 1954-06-29 1956-01-09 New packaging device
FR1157785A (en) * 1956-07-31 1958-06-03 Method of packaging soft plastic food substances such as butter to obtain decorated blocks
US3306967A (en) * 1963-08-12 1967-02-28 Scholl Mfg Co Inc Molding of resinous foams
US3266705A (en) * 1965-01-11 1966-08-16 Republic Packaging Corp Cushioned box
US3273779A (en) * 1965-02-12 1966-09-20 Republic Packaging Corp Folded box
FR1467258A (en) * 1965-12-17 1967-01-27 Cheese box
US3372795A (en) * 1966-11-23 1968-03-12 Worcester Moulded Plastics Com Packaging pad
FR2048257A5 (en) * 1969-12-10 1971-03-19 Lebocey Industrie
NL7007970A (en) * 1970-06-02 1971-12-06 Packing for soft margarine - of profiled container - with flexible thermoplastic lining
FR2102691A5 (en) * 1970-08-11 1972-04-07 Maillard Paul Marie De (expanded) polystyrene packaging crosspiece - for bottles fruit, or glass tubes
US3853221A (en) * 1971-03-17 1974-12-10 Packaging Corp America Pad for cushion packing fragile artilces
FR2210173A5 (en) * 1972-12-08 1974-07-05 Tailleur Fils Cie Sa Thermoplastics damping chock with plane base - surrounding annular projection forming deformable support surface
DE2437968C3 (en) * 1974-08-07 1979-12-20 Erwin 2283 Wenningstedt Porth Padded mailer

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Publication number Publication date
NL166235B (en) 1981-02-16
NL7801366A (en) 1979-08-09
FI63722B (en) 1983-04-29
ZA79498B (en) 1980-09-24
PT69186A (en) 1979-03-01
ATA92479A (en) 1981-01-15
CA1096342A (en) 1981-02-24
AR219371A1 (en) 1980-08-15
EP0003623A1 (en) 1979-08-22
ES241217Y (en) 1981-11-01
ES241217U (en) 1981-05-01
FI790366A7 (en) 1979-08-08
JPS54123395A (en) 1979-09-25
FI63722C (en) 1983-08-10
IE790202L (en) 1979-08-07
IE47913B1 (en) 1984-07-25
DE7902913U1 (en) 1979-05-03
NL166235C (en) 1981-07-15
DE2960052D1 (en) 1981-02-19
AT363849B (en) 1981-09-10
US4211328A (en) 1980-07-08

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