DE102016209351A1 - Electrostatically assisted printing of a packaging material laminate for dimensionally stable food containers including the folded packaging material with loading and unloading - Google Patents

Abstract

The invention relates to a method comprising as method steps a) providing a sheet-like composite, comprising from an outer surface of the sheet-like composite to an inner surface i) a carrier layer, ii) a barrier layer, and iii) a polymer inner layer, wherein the sheet-like composite has a first electrical charge ; b) providing a first component including a first component surface, the first component surface including a plurality of recesses, the recesses containing a composition including a colorant, the first component moving in a first direction, the first component having a first component has second electrical charge; c) first changing the absolute value of the difference between the first electric charge and the second electric charge; d) contacting the outer surface of the sheet composite with the first component surface; and e) further changing the absolute value of the difference between the first electric charge and the second electric charge downstream of the process step d). Furthermore, the invention relates to a printed sheet-like composite; a container precursor and a container, each containing the printed sheet-like composite; an apparatus for printing a sheet-like composite; and a use of the apparatus for printing a sheet-like composite.

Description

• a) Bereitstellen eines flächenförmigen Verbunds, beinhaltend als einander überlagernde Schichten von einer Außenoberfläche des flächenförmigen Verbunds zu einer Innenoberfläche des flächenförmigen Verbunds i) eine Trägerschicht, ii) eine Barriereschicht, und iii) eine Polymerinnenschicht, wobei der flächenförmige Verbund eine erste elektrische Ladung hat;
• b) Bereitstellen einer ersten Komponente, beinhaltend eine erste Komponentenoberfläche, wobei die erste Komponentenoberfläche eine Vielzahl von Ausnehmungen beinhaltet, wobei die Ausnehmungen eine Zusammensetzung, beinhaltend ein Farbmittel, beinhalten, wobei die erste Komponente sich in eine erste Richtung bewegt, wobei die erste Komponente eine zweite elektrische Ladung hat;
• c) ein erstes Verändern des Absolutbetrags der Differenz zwischen der ersten elektrischen Ladung und der zweiten elektrischen Ladung;
• d) Kontaktieren der Außenoberfläche des flächenförmigen Verbunds mit der ersten Komponentenoberfläche; und
• e) ein weiteres Verändern des Absolutbetrags der Differenz zwischen der ersten elektrischen Ladung und der zweiten elektrischen Ladung stromab des Verfahrensschritts d).

The present invention relates to the technical field of dimensionally stable food containers made of packaging material, said containers containing the packaging material folded. In particular, the present invention relates to a method comprising as method steps

• a) providing a sheet-like composite, comprising as superimposed layers of an outer surface of the sheet-like composite to an inner surface of the sheet-like composite i) a carrier layer, ii) a barrier layer, and iii) a polymer inner layer, wherein the sheet-like composite has a first electrical charge;
• b) providing a first component including a first component surface, wherein the first component surface includes a plurality of recesses, the recesses containing a composition including a colorant, the first component moving in a first direction, the first component having a first component has second electrical charge;
• c) first changing the absolute value of the difference between the first electric charge and the second electric charge;
• d) contacting the outer surface of the sheet composite with the first component surface; and
• e) further varying the absolute value of the difference between the first electric charge and the second electric charge downstream of the process step d).

Furthermore, the invention relates to a printed sheet-like composite; a container precursor and a container each containing the printed sheet-like composite; an apparatus for printing a sheet-like composite; and a use of the apparatus for printing a sheet-like composite.

In the prior art dimensionally stable food containers made of multilayer laminates, also referred to as sheet-like composites known. Such containers are obtained by folding and stacking certain areas of the laminate. The dimensional stability of the container is achieved in that the laminate includes a carrier layer, which often consists of cardboard or cardboard. In such food containers, food can be stored for as long as possible without being impaired. Typically, the sheet-like composites are made up of the carrier layer, which usually comprises cardboard or paper, an adhesion promoter layer, a barrier layer and a further plastic layer, such as, inter alia, in US Pat WO 90/09926 A2 disclosed.

Usually, the containers described above are provided on their outside with a printed decor. As a result, information relevant to the consumer of the food contained in the container, such as ingredients of the food, can be made available directly on the container. Furthermore, the decor is used for promotional purposes and the design of an appealing product appearance. In the prior art, prior to folding the laminate, the decor is applied to the laminate by a gravure printing process. For this purpose, a pressure roller with a plurality of recesses, the so-called wells used. The wells are filled with a printing ink which is taken up by the laminate when the outer surface of the laminate to be printed is pressed. Thus, the cups of the pressure roller correspond to the individual pixels of the printed decoration. In order to achieve the best possible print image, sufficient ink must be applied to the laminate from as many wells as possible. If from a well too little or no ink is taken up by the laminate missing this pixel in the printed image. One speaks here also of so-called Missing Dots. For an acceptable print image, only a maximum proportion of missing dots is tolerable. The rougher the laminate surface to be printed, for example a surface of a cardboard layer, the more missing dots usually arise during printing. The inclusion of the printing ink through the laminate is made difficult by the fact that the liquid ink forms a meniscus in the wells. The surface level of the ink in the wells is therefore concave, so arched away from the laminate. As a result, only laminate surfaces that do not exceed a certain roughness can be printed satisfactorily. The surface roughness of the laminate is significantly determined by the cardboard layer. Thus, the cardboard layer usually has to be elaborately equipped to obtain a relatively smooth and easy to print surface of the laminate. For this purpose, the cardboard layer is for example provided with one or more coating layers. This leads to considerable additional costs in container production.

In general, it is an object of the present invention to at least partially overcome a disadvantage arising from the prior art. A further object of the invention is to provide a dimensionally stable food container made of a packaging laminate with a decoration which has an improved printed image. Another object of the present invention is to provide a dimensionally stable food container made of a packaging laminate with a decoration, the decoration having an equally good or improved printed image on a rougher printed surface. A further object of the invention is to provide a dimensionally stable food container made of a packaging material laminate with a decoration, the decoration being printed directly on a cardboard or paper layer of the packaging material laminate. A further object of the invention is to provide a dimensionally stable food container made of a packaging material laminate with a decoration, wherein the decoration has a lower basis weight with the same degree of coverage. A further object of the invention is to provide a dimensionally stable food container made of a packaging laminate with a decoration, the decoration having a wider range of area coverage. A further object of the invention is to provide a dimensionally stable food container made of a packaging material laminate with a decor, wherein the food container can be produced more cheaply. Another object of the invention is to provide a dimensionally stable food container having any of the above advantages, wherein the decor has been obtained by gravure printing. A further object of the invention is to provide one of the above advantageous dimensionally stable food containers made of a packaging material laminate, wherein the packaging material laminate contains an electrically conductive barrier layer, preferably of aluminum.

In particular, it is an object of the invention to provide an aforementioned food container, wherein the decor is multi-colored. Here, the multicolored decor preferably contains at least 4, more preferably at least 6, printed color rasters of different colors. Especially preferred are exactly 5 or 6 printed color screens of different colors. A further object of the invention is to provide a printing method, preferably a gravure printing method, and a device with which the above-mentioned packaging material for dimensionally stable food containers can be printed with one of the abovementioned decors. In addition, it is an object of the invention to provide the above method wherein residues of paint solvents on the laminate are reduced. It is also an object of the invention to provide the above method wherein a paint drying time is reduced with the same dry performance. Furthermore, it is an object of the invention that the aforementioned method can be performed as safely as possible, in particular with regard to occupational safety.

A contribution to the at least partial fulfillment of at least one of the above objects is made by the independent claims. The dependent claims provide preferred embodiments that contribute to at least partially performing at least one of the tasks.

• a) Bereitstellen eines flächenförmigen Verbunds, beinhaltend als einander überlagernde Schichten von einer Außenoberfläche des flächenförmigen Verbunds zu einer Innenoberfläche des flächenförmigen Verbunds i) eine Trägerschicht, ii) eine Barriereschicht, und iii) eine Polymerinnenschicht, wobei der flächenförmige Verbund eine erste elektrische Ladung hat;
• b) Bereitstellen einer ersten Komponente, beinhaltend eine erste Komponentenoberfläche, wobei die erste Komponentenoberfläche eine Vielzahl von Ausnehmungen beinhaltet, wobei die Ausnehmungen eine Zusammensetzung, beinhaltend ein Farbmittel, beinhalten, wobei die erste Komponente sich in eine erste Richtung bewegt, wobei die erste Komponente eine zweite elektrische Ladung hat;
• c) ein erstes Verändern des Absolutbetrags der Differenz zwischen der ersten elektrischen Ladung und der zweiten elektrischen Ladung;
• d) Kontaktieren der Außenoberfläche des flächenförmigen Verbunds mit der ersten Komponentenoberfläche; und
• e) ein weiteres Verändern des Absolutbetrags der Differenz zwischen der ersten elektrischen Ladung und der zweiten elektrischen Ladung stromab des Verfahrensschritts d).

A contribution to the fulfillment of at least one of the objects according to the invention is afforded by an embodiment 1 of a method comprising as method steps

• a) providing a sheet-like composite, comprising as superimposed layers of an outer surface of the sheet-like composite to an inner surface of the sheet-like composite i) a carrier layer, ii) a barrier layer, and iii) a polymer inner layer, wherein the sheet-like composite has a first electrical charge;
• b) providing a first component including a first component surface, wherein the first component surface includes a plurality of recesses, the recesses containing a composition including a colorant, the first component moving in a first direction, the first component having a first component has second electrical charge;
• c) first changing the absolute value of the difference between the first electric charge and the second electric charge;
• d) contacting the outer surface of the sheet composite with the first component surface; and
• e) further varying the absolute value of the difference between the first electric charge and the second electric charge downstream of the process step d).

An embodiment 2 of the method according to the invention is configured according to embodiment 1, wherein the first modification and the further modification are in opposite directions. According to an embodiment, it is preferable that the first variation is an increase in the absolute value of the difference between the first electric charge and the second electric charge. According to another embodiment, it is preferred that the further changing is to decrease the absolute amount of the difference between the first electric charge and the second electric charge. Preferably, in the first modification, a first electrical voltage of the sheet-like composite is generated to ground, which is reduced in the further changing to a further electrical voltage. Further preferably, the first electric voltage is in a range of 200 to 1200 V, preferably 300 to 1100 V, more preferably 400 to 1000 V, most preferably 500 to 900 V.

• f) ein erstes Verändern des Absolutbetrags der Differenz zwischen der ersten elektrischen Ladung und der dritten elektrischen Ladung; und
• g) Kontaktieren der Außenoberfläche des flächenförmigen Verbunds mit der weiteren Komponentenoberfläche).

An embodiment 3 of the method according to the invention is configured according to embodiment 1 or 2, wherein in method step a) a further component, including a further component surface, is further provided, wherein the further component surface includes a plurality of recesses, wherein the recesses have a further composition, including another colorant, wherein the further component moves in the first direction, the further component having a third electrical charge; the process downstream of process step e) comprising the following process steps:

• f) first changing the absolute value of the difference between the first electric charge and the third electric charge; and
• g) contacting the outer surface of the sheet-like composite with the further component surface).

In one aspect of this embodiment, it is preferred that the further component surface include a further composition other than the composition of the first component surface. The further composition may differ from the first composition in many respects, the difference preferably being in the color of the colorant. Thus, in another aspect of this embodiment, it is preferable that a plurality of further component surfaces each including a plurality of recesses, the recesses including a composition including a colorant. The number of further components and component surfaces is preferably at least 1, more preferably at least 3, even more preferably at least 4. Particularly preferably, the number of further components and component surfaces together is exactly 5 or 6. However, the number may be 10 or more.

An embodiment 4 of the method according to the invention is configured according to embodiment 3, wherein the method downstream of method step g) comprises a method step h) further changing the absolute value of the difference between the first electrical charge and the third electrical charge
includes.

An embodiment 5 of the method according to the invention is designed according to one of the preceding embodiments, wherein the barrier layer is electrically insulating.

An embodiment 6 according to the invention of the method is according to one of the preceding embodiments, wherein in step c) the increase is effected by applying electrical charge carriers from an electrode to the outer surface of the sheet-like composite.

An embodiment 7 of the method according to the invention is designed according to one of the embodiments 1 to 4 or 6, wherein the barrier layer is electrically conductive.

An embodiment 8 of the method according to the invention is configured according to embodiment 7, wherein the barrier layer comprises a metal or a metal oxide or both, in each case preferably consisting thereof. A preferred metal is aluminum.

An embodiment 9 of the method according to the invention is configured according to one of the preceding embodiments, wherein in method step c) or d) or in both the sheet-like composite is contacted with an additional component, wherein the additional component moves in a different direction, the other direction is different from the first direction. Here, the sheet-like composite is preferably contacted on its inner surface with the additional component. Preferably, the sheet-like composite is guided by the additional component. Preferably, the first direction and the further direction are in opposite directions. According to a preferred aspect of this embodiment, the additional component presses the outer surface of the sheet-like composite to the first component. Another preferred aspect of this embodiment contemplates that one or more further components each pair with one or more additional components.

An embodiment 10 of the method according to the invention is configured according to one of the preceding embodiments, wherein the first component rotates, wherein the first direction is a first direction of rotation.

An embodiment 11 of the method according to the invention is configured according to embodiment 9 or 10, wherein the additional component rotates, the other direction being a different direction of rotation. The other direction of rotation is preferably opposite to the first direction of rotation.

An inventive embodiment 12 of the method is configured according to one of the preceding embodiments, wherein in step d) of the sheet-like composite is printed by gravure printing. In one embodiment, it is further printed sheet-like composite in step g) by gravure printing. Here, in the process steps d) and g), preferably different compositions, preferably different colorants, preferably of different color, are applied to the outer surface of the sheet-like composite, preferably printed. As a result, the sheet-like composite is preferably printed in multiple colors. Depending on the desired number of colors, a plurality of further components and preferably also additional components may be provided. In this case, downstream of each other component, increasing an absolute amount of electric charge difference between the sheet-like composite and the further component and downstream of the further component and contacting the outer surface of the sheet-like composite with the other component, decreases this absolute value

An embodiment 13 of the method according to the invention is configured according to one of the preceding embodiments, wherein the first component is grounded.

An embodiment 14 of the method according to the invention is configured according to one of the preceding embodiments, wherein the laminar composite is characterized by a firing residue in a range from 0.1 to 75 mg, preferably from 0.2 to 50 mg, more preferably from 0.3 to 30 mg, most preferably from 0.3 to 25 mg.

An embodiment 15 of the method according to the invention is configured according to one of the preceding embodiments, wherein the sheet-like composite further comprises a polymer outer layer on a side of the carrier layer facing the outer surface, the polymer outer layer having a layer thickness in a range from 1 to 30 μm, preferably from 2 to 25 μm, more preferably from 3 to 20 μm, most preferably from 3 to 10 μm.

An inventive embodiment 16 of the method is configured according to one of the preceding embodiments, wherein in method step d) the sheet-like composite is superimposed on the outer surface with an inking, wherein the inking is characterized by a number of missing halftone dots in a range of 0 to 100, preferably from 0 to 70, more preferably from 0 to 60, more preferably from 0 to 40, more preferably from 0 to 30, more preferably from 0 to 20, more preferably from 0 to 10, most preferably from 0 to 8, each per 100 mm ² .

An inventive embodiment 17 of the method is configured according to one of the preceding embodiments, wherein in process step d) the sheet-like composite is superimposed on the outer surface with a paint job, wherein the paint application includes a first inking area and a further inking area, wherein the first inking area is characterized by a coverage of at least 50%, preferably of at least 60%, more preferably of at least 70%, more preferably of at least 80%, most preferably of at least 90%, the further inking area being characterized by a coverage in a range greater than 0 up to 15%, preferably from more than 0 up to 13%, more preferably from more than 0 up to 11%, more preferably from more than 0 up to 9%, most preferably from more than 0 up to 5%, wherein the first inking area at the adjacent color application area. Preferably, the aforementioned surface coverages relate to the same color.

An embodiment 18 of the method according to the invention is configured according to one of the preceding embodiments, wherein the outer surface is a surface of the carrier layer.

An inventive embodiment 19 of the method is configured according to one of the preceding embodiments, wherein the inner polymer layer to 10 to 90 wt .-%, preferably 25 to 90 wt .-%, more preferably 30 to 80 wt .-%, each based on the Total weight of the polymer inner layer, a polymer prepared by a metallocene catalyst. A preferred polymer polymerized by means of a metallocene catalyst is an mPE.

An inventive embodiment 20 of the method is configured according to one of the preceding embodiments, wherein the polymer inner layer includes a polymer blend, wherein the polymer blend to 10 to 90 wt .-%, preferably 25 to 90 wt .-%, more preferably 30 to 80 wt. -%, mPE and at least 10 wt .-%, preferably at least 15 wt .-%, more preferably at least 20 wt .-%, another polymer, each based on the total weight of the polymer blend includes.

An embodiment 21 of the method according to the invention is configured according to one of the preceding embodiments, wherein the carrier layer comprises one of the group consisting of cardboard, cardboard, and paper, or a combination of at least two thereof, preferably consists thereof.

An embodiment 22 of the method according to the invention is configured according to one of the preceding embodiments, wherein the carrier layer has at least one hole, wherein the hole is covered at least with the barrier layer and at least with the polymer inner layer as a hole top layers. The hole-covering layers are each the layers covering the at least one hole.

An embodiment 23 of the method according to the invention is configured according to one of the preceding embodiments, wherein the outer surface is not included in a cover layer of the carrier layer. A preferred cover layer is a "dash".

An embodiment 1 of a printed sheet-like composite 1 obtainable by the method according to one of the embodiments 1 to 23 contributes to the fulfillment of at least one of the objects according to the invention.

An embodiment 2 of the printed sheet-like composite 1 according to the invention is configured according to embodiment 1, wherein the outer surface of the sheet-like composite is associated with a paint application, wherein the inking is characterized by a number of missing halftone dots in a range of 0 to 100, preferably from 0 to 70, more preferably from 0 to 60, more preferably from 0 to 40, more preferably from 0 to 30, even more preferably from 0 to 20, more preferably from 0 to 10, most preferably from 0 to 8, each per 100 mm ² . Preferably, the outer surface is printed with the paint. Preferably, the outer surface of the sheet-like composite is superimposed with a plurality of paint jobs, each paint job includes a different color. Here, the number of ink applications is preferably at least 2, more preferably at least 3, even more preferably at least 4. More preferably, the number of paint jobs is exactly 5 or 6. However, the number may be 10 or more. Most preferably, each of the aforementioned paint jobs is characterized by a number of missing halftone dots in a range of 0 to 100, preferably 0 to 70, more preferably 0 to 60, more preferably 0 to 40, even more preferably 0 to 30, more preferably 0 to 20, more preferably from 0 to 10, most preferably from 0 to 8, each per 100 mm ² .

An embodiment 3 of the printed sheet-like composite 1 according to the invention is configured according to the preceding embodiment, wherein the ink application includes a first inking area and a further inking area, wherein the first inking area is characterized by a surface coverage of at least 50%, preferably at least 60%, more preferably at least 70%, more preferably at least 80%, most preferably at least 90%, wherein the further inking area is characterized by a coverage in a range of greater than 0 to 15%, preferably greater than 0 to 13%, more preferably greater than 0 to 11%, more preferably greater than 0 to 9%, most preferably greater than 0 to 5%, wherein the first inking area is adjacent to the further inking area. Preferably, the aforementioned surface coverages relate to the same color.

• a) eine Zuführeinrichtung, angeordnet und ausgebildet, um einen flächenförmigen Verbund, beinhaltend als einander überlagernde Schichten von einer Außenoberfläche des flächenförmigen Verbunds zu einer Innenoberfläche des flächenförmigen Verbunds i) eine Trägerschicht, ii) eine Barriereschicht, und iii) eine Polymerinnenschicht, aufzunehmen;
• b) eine erste Elektrode angeordnet und ausgebildet zum Austausch von elektrischen Ladungsträgern mit der Außenoberfläche des flächenförmigen Verbunds;
• c) eine erste Komponente, beinhaltend eine erste Komponentenoberfläche, wobei die erste Komponentenoberfläche eine Vielzahl von Ausnehmungen beinhaltet, wobei die Ausnehmungen angeordnet und ausgebildet sind, um eine Zusammensetzung, beinhaltend ein Farbmittel, aufzunehmen, wobei die erste Komponentenoberfläche mit der Außenoberfläche des flächenförmigen Verbunds kontaktierbar ist;
• d) Stromab der ersten Elektrode und der ersten Komponente eine zweite Elektrode, angeordnet und ausgebildet zum Austausch von elektrischen Ladungsträgern mit der Außenoberfläche des flächenförmigen Verbunds.

A contribution to the fulfillment of at least one of the objects according to the invention is afforded by an embodiment 1 of a device comprising as device components

• a) a supply device, arranged and formed to a sheet-like composite, comprising as superimposed layers of an outer surface of the sheet-like composite to an inner surface of the sheet-like composite i) a carrier layer, ii) a barrier layer, and iii) a polymer inner layer;
• b) a first electrode arranged and adapted for the exchange of electrical charge carriers with the outer surface of the sheet-like composite;
• c) a first component including a first component surface, wherein the first component surface includes a plurality of recesses, the recesses being arranged and configured to receive a composition including a colorant, wherein the first component surface is contactable to the outer surface of the sheet composite is;
• d) downstream of the first electrode and the first component, a second electrode, arranged and adapted for the exchange of electrical charge carriers with the outer surface of the sheet-like composite.

An embodiment 2 of the device according to the invention is configured according to the preceding embodiment, wherein the first electrode and the second electrode are arranged and configured such that the first electrode can have an electrical charge different from the second electrode. The difference in the charge of the two electrodes can be of any kind. There may be different charges of the same sign but also opposite charges, the latter being preferred. In addition, the above statements regarding the charges of the electrodes in connection with the method according to the invention also apply here. Further preferably, the two electrodes are configured to contact the sheet-like composite, wherein the sheet-like composite moves at a speed of at least 50 m / min, more preferably at least 100 m / min, most preferably 150 m / min. Here, the sheet-like composite can also move at 600 m / min or more. For this purpose, the two electrodes each preferably include a brush of electrically conductive material. Preferably, the first electrode is configured to generate an absolute amount of stress of the sheet composite to earth in a range of 500 to 1500 V, more preferably 700 to 1300 V, most preferably 900 to 1100 V. The second electrode is preferably formed into one Reducing the absolute value of the aforesaid voltage of the sheet to ground to a value in a range of 0 to 500 V, preferably 0 to 400 V, more preferably 0 to 300 V, more preferably 0 to 200 V, more preferably 0 to 100 V. , more preferably from 0 to 50 V, even more preferably from 0 to 20 V, most preferably from 0 to 5 V.

An embodiment 3 of the device according to the invention is configured according to one of the preceding embodiments 1 or 2, wherein a discharge device is arranged downstream of the device component d) and designed to receive the sheet-like composite. Both the supply and the discharge device are designed so that the composite is continuously, preferably under tension, fed and discharged. Preferably, the supply as well as the discharge device are formed as drums, on which the composite can be wound off or wound up.

An embodiment 4 of the device according to the invention is configured according to one of the preceding embodiments 1 to 3, wherein downstream of the device component d) comprises a further component, including a further component surface, wherein the further component surface includes a plurality of recesses, wherein the recesses arranged and formed are to include a composition including a colorant includes, wherein the further component surface is contactable with the outer surface of the sheet-like composite. It can not only one but it can also be provided several other components. The number of further components depends, as already stated above for the process according to the invention, preferably on the number of colors to be applied. The remarks on the method according to the invention also apply here to the device according to the invention as being preferred.

An inventive embodiment 5 of the device is designed according to one of the preceding embodiments, wherein the barrier layer is electrically insulating.

An embodiment 6 of the device according to the invention is configured according to one of embodiments 1 to 4, wherein the barrier layer is electrically conductive.

An embodiment 7 of the device according to the invention is designed according to embodiment 6, wherein the barrier layer comprises a metal or a metal oxide or both, preferably consists thereof. A preferred metal is aluminum.

An embodiment 8 of the device according to the invention is configured according to one of embodiments 1 to 7, wherein the device includes an additional component, wherein the additional component is arranged and configured so that the sheet-like composite can be contacted with the additional component. Preferably, the first component is movable in a first direction, wherein the additional component is movable in a different direction. In this case, it is preferable that the other direction is opposite to the first direction. Here, the sheet-like composite is preferably contacted on its inner surface with the additional component. Preferably, the sheet-like composite of the additional component is feasible, preferably by a gap between the first component and the additional component. Furthermore, it is preferred that the additional component is arranged in front of the second electrode. Further preferably, the additional component is arranged after the first electrode.

An embodiment 9 of the device according to the invention is configured according to one of embodiments 4 to 8, wherein the first component is designed to be rotatable, wherein the first direction is a first direction of rotation, wherein the further component is designed rotatable in a further direction, wherein the further direction a another direction of rotation.

An embodiment 10 of the device according to the invention is configured according to one of the embodiments 1 to 9, wherein the first component is a gravure roll.

An embodiment 11 of the device according to the invention is configured according to one of the embodiments 1 to 10, wherein the first component is grounded.

An embodiment 12 of the device according to the invention is configured according to one of embodiments 1 to 11, wherein the laminar composite is characterized by a firing residue in a range from 0.1 to 75 mg, preferably from 0.2 to 50 mg, more preferably from 0.3 to 30 mg, most preferably from 0.3 to 25 mg.

An embodiment 13 of the device according to the invention is configured according to one of embodiments 1 to 12, wherein the sheet-like composite further comprises a polymer outer layer on a side of the carrier layer facing the outer surface, wherein the polymer outer layer has a layer thickness in a range from 1 to 30 μm, preferably from 2 to 25 μm, more preferably from 3 to 20 μm, most preferably from 3 to 10 μm.

An embodiment 14 of the device according to the invention is configured according to one of the embodiments 1 to 13, wherein the outer surface is a surface of the carrier layer.

An embodiment 15 of the device according to the invention is configured according to one of embodiments 1 to 14, wherein the polymer inner layer to 10 to 90 wt .-%, preferably 25 to 90 wt .-%, more preferably 30 to 80 wt .-%, respectively on the total weight of the inner polymer layer, a polymer prepared by means of a metallocene catalyst. A preferred polymer polymerized by means of a metallocene catalyst is an mPE.

An embodiment 16 of the device according to the invention is configured according to one of embodiments 1 to 15, wherein the polymer inner layer comprises a polymer blend, the polymer blend being from 10 to 90% by weight, preferably from 25 to 90% by weight, more preferably from 30 to 80 Wt .-%, mPE and at least 10 wt .-%, preferably at least 15 wt .-%, more preferably at least 20 wt .-%, another polymer, each based on the total weight of the polymer blend includes.

An embodiment 17 of the device according to the invention is configured according to one of embodiments 1 to 16, wherein the carrier layer comprises one of the group consisting of cardboard, paperboard, and paper, or a combination of at least two thereof, preferably consists thereof.

An embodiment 18 of the device according to the invention is configured according to one of embodiments 1 to 17, wherein the carrier layer has at least one hole, wherein the hole is covered at least with the barrier layer and at least with the polymer inner layer as a hole top layers. The hole-covering layers are each the layers covering the at least one hole.

An embodiment 19 of the device according to the invention is configured according to one of the embodiments 1 to 18, wherein the outer surface is not included in a cover layer of the carrier layer.

• i) einen Farbauftrag,
• ii) eine Trägerschicht,
• iii) eine Barriereschicht, und
• iv) eine Polymerinnenschicht,

wobei der bedruckte flächenförmige Verbund gekennzeichnet ist durch einen Glührückstand in einem Bereich von 0,1 bis 75 mg, bevorzugt von 0,2 bis 50 mg, bevorzugter von 0,3 bis 30 mg, am bevorzugtesten von 0,3 bis 25 mg. Bevorzugt beinhaltet der flächenförmige Verbund auf einer der Barriereschicht abgewandten Seite der Trägerschicht eine Vielzahl von Farbaufträgen. Bevorzugt beinhaltet hierbei jeder Farbauftrag eine andere Farbe. Hierbei ist die Anzahl der Farbaufträge bevorzugt mindestens 2, bevorzugter mindestens 3, noch bevorzugter mindestens 4. Besonders bevorzugt ist die Anzahl der Farbaufträge genau 5 oder 6. Die Anzahl kann jedoch auch 10 und mehr betragen. A contribution to fulfilling at least one of the objects according to the invention is afforded by an embodiment 1 of a printed sheet-like composite 2 comprising layers overlapping one another from an outer surface of the printed sheetlike composite to an inner surface of the printed sheetlike composite

• i) a paint application,
• ii) a carrier layer,
• iii) a barrier layer, and
• iv) a polymer inner layer,

wherein the printed sheet composite is characterized by a reflow residue in a range of 0.1 to 75 mg, preferably 0.2 to 50 mg, more preferably 0.3 to 30 mg, most preferably 0.3 to 25 mg. Preferably, the sheet-like composite on a side facing away from the barrier layer of the carrier layer includes a plurality of paint applications. In this case, each application of color preferably includes a different color. Here, the number of ink applications is preferably at least 2, more preferably at least 3, even more preferably at least 4. More preferably, the number of paint jobs is exactly 5 or 6. However, the number may be 10 or more.

An embodiment 2 of the printed sheet-like composite 2 according to the invention is configured according to Embodiment 1, wherein the sheet-like composite between the paint application and the carrier layer further includes a polymer outer layer, wherein the polymer outer layer is characterized by a layer thickness in a range of 1 to 30 .mu.m, preferably 2 to 25 μm, more preferably 3 to 20 μm, most preferably 3 to 10 μm.

• i) einen Farbauftrag,
• ii) eine Polymeraußenschicht,
• iii) eine Trägerschicht,
• iv) eine Barriereschicht, und
• v) eine Polymerinnenschicht,

wobei die Polymeraußenschicht gekennzeichnet ist durch eine Schichtdicke in einem Bereich von 1 bis 30 µm, bevorzugt von 2 bis 25 µm, bevorzugter von 3 bis 20 µm, am bevorzugtesten von 3 bis 10 µm. Bevorzugt beinhaltet der flächenförmige Verbund auf einer der Barriereschicht abgewandten Seite der Trägerschicht eine Vielzahl von Farbaufträgen. Bevorzugt beinhaltet hierbei jeder Farbauftrag eine andere Farbe. Hierbei ist die Anzahl der Farbaufträge bevorzugt mindestens 2, bevorzugter mindestens 3, noch bevorzugter mindestens 4. Besonders bevorzugt ist die Anzahl der Farbaufträge genau 5 oder 6. Die Anzahl kann jedoch auch 10 und mehr betragen. A contribution to fulfilling at least one of the objects according to the invention is afforded by an embodiment 1 of a printed sheet-like composite 3 comprising layers overlapping one another from an outer surface of the printed sheet-like composite to an inner surface of the printed sheet-like composite

• i) a paint application,
• ii) a polymer outer layer,
• iii) a carrier layer,
• iv) a barrier layer, and
• v) a polymer inner layer,

wherein the polymer outer layer is characterized by a layer thickness in a range of 1 to 30 microns, preferably from 2 to 25 microns, more preferably from 3 to 20 microns, most preferably from 3 to 10 microns. Preferably, the sheet-like composite on a side facing away from the barrier layer of the carrier layer includes a plurality of paint applications. In this case, each application of color preferably includes a different color. Here, the number of ink applications is preferably at least 2, more preferably at least 3, even more preferably at least 4. More preferably, the number of paint jobs is exactly 5 or 6. However, the number may be 10 or more.

An embodiment 2 of the printed sheet-like composite 3 according to the invention is configured according to embodiment 1, wherein the printed sheet-like composite is characterized by a firing residue in a range from 0.1 to 75 mg, preferably from 0.2 to 50 mg, more preferably from 0, 3 to 30 mg, most preferably from 0.3 to 25 mg.

An embodiment 3 of the printed sheet-like composite 2 or 3 according to the invention is configured according to the respective embodiment 1 or 2, wherein the ink application includes a first inking area and a further inking area, wherein the first inking area is characterized by a surface coverage of at least 50%, preferably at least 60%, more preferably at least 70%, more preferably at least 80%, most preferably at least 90%, wherein the further inking area is characterized by a surface coverage in a range of greater than 0 to 15%, preferably greater than 0 to 13%, more preferably from more than 0 up to 11%, more preferably from more than 0 up to 9%, most preferably from more than 0 up to 5%, wherein the first inking area adjoins the further inking area. Preferably, the aforementioned surface coverages relate to the same color.

An embodiment 4 of the printed sheet-like composite 2 or 3 according to the invention is configured according to one of the respective embodiments 1 to 3, wherein the inking is characterized by a number of missing halftone dots in a range from 0 to 100, preferably from 0 to 70, more preferably from 0 to 60, more preferably from 0 to 40, more preferably from 0 to 30, more preferably from 0 to 20, more preferably from 0 to 10, most preferably from 0 to 8, each per 100 mm ² . Most preferably, a plurality, more preferably each, of the above-mentioned paint applications are each characterized by a number of missing halftone dots in a range of 0 to 100, preferably 0 to 70, more preferably 0 to 60, more preferably 0 to 40, more preferably 0 to 30, more preferably 0 to 20, more preferably 0 to 10, most preferably 0 to 8, each per 100 mm ² .

A contribution to the fulfillment of at least one of the objects according to the invention is afforded by an embodiment 1 of a container precursor comprising at least partially the printed sheet-like composite 1 according to one of embodiments 1 to 3, or the printed sheet-like composite 2 or 3 according to one of the respective embodiments 1 to 4.

Contributing to the fulfillment of at least one of the objects of the invention is an embodiment 1 of a closed container at least partially comprising the printed sheet-like composite 1 according to one of embodiments 1 to 3, or the printed sheet-like composite 2 or 3 according to one of the respective embodiments 1 to 4, wherein the printed sheetlike composite is folded at least 1 time, more preferably at least 2 times, more preferably at least 3 times, more preferably at least 4 times, more preferably at least 5 times, most preferably at least 8 times.

A contribution to the fulfillment of at least one of the objects according to the invention is afforded by an embodiment 1 of a use of the device according to one of embodiments 1 to 19 for printing the sheet-like composite. A preferred printing is gravure printing. Preferably, the sheet-like composite is printed in multiple colors.

In an embodiment 2 according to the invention of the use of the device, the printing takes place directly on a surface of the carrier layer.

Preferred embodiments of components of a category according to the invention, in particular the method, the printed sheet-like composite, the container precursor, the closed container, the device and the use are also preferred for the same or corresponding components of the other categories according to the invention.

charge transfer

The method steps c), e), f) and h) of the method according to the invention each include changing an absolute amount of a charge difference. In this case, changing method steps c) and f) is preferably in opposite directions to changing method step e) and h). Further, changing the method steps c) and f) is an increase. Changing method steps e) and h) is preferably a reduction. The elevation is preferably carried out by transfer of electrical charge carriers from an electrode to the sheet-like composite, preferably to the outside of the sheet-like composite. The reduction is preferably carried out by transferring electrical charge carriers from the sheet-like composite, preferably from the outside of the sheet-like composite, to an electrode. Particularly preferably, the process steps c), e), f) and h) are changed by a different electrode. In the case of an electrically insulating barrier layer, the process steps c) or f) or both are preferably increased by transferring electrical charge carriers from one electrode to an additional component each, which contacts the sheet-like composite on its inner surface. The additional component is preferably a rotating roller, more preferably a compression roller. The first component and the further components are preferably rotating rollers, preferably pressure rollers. Preferably, a counter-rotating impression roller is arranged for each pressure roller, which contact the sheet-like composite on its inner surface. Further preferably, the first component and the other components are grounded. In a further preferred embodiment, the additional components are grounded. In a preferred embodiment of the method according to the invention, an electrical voltage of the barrier layer to ground is always in a range of -50 to +50 V, preferably -40 to +40 V, more preferably -30 to +30 V, most preferably -20 up to +20 V.

inking

An application of paint involves at least one colorant. A preferred inking consists of a plurality of, preferably printed, halftone dots. Preferably, the application of paint, or the application of paint and the other paint jobs forms a decor.

outer surface

The outer surface of the sheet-like composite is the surface facing predominantly outward in a container to be made from the sheet-like composite. Thus, the outer surface is in direct contact with an environment of the container. In the sheet-like composite, the outer surface and the inner surface form opposite surfaces of the sheet-like composite.

layers

Unless otherwise stated, the layers can follow one another indirectly in one layer sequence, ie with one or at least two intermediate layers, or directly, that is to say without an intermediate layer. This is especially the case with the formulation in which one layer overlays another layer. A formulation in which a layer sequence includes enumerated layers means that at least the indicated layers are present in the stated order. This formulation does not necessarily mean that these layers follow one another directly. A formulation in which two layers adjoin one another means that these two layers follow one another directly and thus without an intermediate layer.

backing

As carrier layer, any material suitable for this purpose can be used, which has sufficient strength and rigidity to give stability to the container so that the container essentially retains its shape in the filled state. This is in particular a necessary feature of the carrier layer, since the invention relates to the technical field of dimensionally stable containers. In addition to a number of plastics, plant-based pulps, in particular pulps, preferably glued, bleached and / or unbleached pulps are preferred, with paper and board being particularly preferred. The basis weight of the carrier layer is preferably in a range of from 120 to 450 g / m ² , more preferably in a range of from 130 to 400 g / m ^2, and most preferably in a range of from 150 to 380 g / m ² . A preferred paperboard generally has a single-layer or multi-layer structure and may be coated on one or both sides with one or more top layers. Furthermore, a preferred board has a residual moisture of less than 20 wt .-%, preferably from 2 to 15 wt .-% and particularly preferably from 4 to 10 wt .-% based on the total weight of the carton. A particularly preferred paperboard has a multilayer construction. Further preferably, the cardboard has on the surface facing the environment at least one, but more preferably at least two layers of a cover layer, which is known in the art as "stroke". Further, a preferred board has a Scott Bond value in a range of 100 to 360 J / m ² , preferably 120 to 350 J / m ^2, and particularly preferably 135 to 310 J / m ² . The above-mentioned ranges make it possible to provide a composite from which a container with high density, can be folded easily and in small tolerances.

barrier layer

• a. einer Kunststoffbarriereschicht als elektrisch isolierender Barriereschicht;
• b. einer Metallschicht als elektrisch leitender Barriereschicht;
• c. einer Metalloxidschicht; oder
• d. einer Kombination von mindestens zwei aus a. bis c.

As the barrier layer, any material suitable for this purpose can be used which has a sufficient barrier effect, in particular to oxygen. The barrier layer is preferably selected from

• a. a plastic barrier layer as an electrically insulating barrier layer;
• b. a metal layer as an electrically conductive barrier layer;
• c. a metal oxide layer; or
• d. a combination of at least two from a. to c.

Is the barrier layer according to alternative a. a plastic barrier layer, this preferably contains at least 70 wt .-%, more preferably at least 80 wt .-% and most preferably at least 95 wt .-% of at least one plastic, the specialist for this purpose, in particular for packaging container suitable aroma or Gas barrier properties is known. As plastics, in particular thermoplastics, here N or O-bearing plastics come into consideration either individually or in mixtures of two or more. According to the invention, it may prove to be advantageous if the plastic barrier layer has a melting temperature in a range of more than 155 to 300 ° C, preferably in a range of 160 to 280 ° C and more preferably in a range of 170 to 270 ° C.

More preferably, the plastic barrier layer has a basis weight in a range of 2 to 120 g / m ² , preferably in a range of 3 to 60 g / m ² , more preferably in a range of 4 to 40 g / m ² and more preferably of 6 to 30 g / m ² . Further preferably, the plastic barrier layer of melts, for example by extrusion, in particular layer extrusion available. In addition, the plastic barrier layer may also be introduced by lamination into the sheet-like composite. It is preferred that a film is incorporated in the sheet-like composite. According to another embodiment, plastic barrier layers obtainable by deposition from a solution or dispersion of plastics may also be selected.

Suitable polymers are preferably those which have a weight average molecular weight, as determined by gel permeation chromatography (GPC) by means of light scattering, in a range from 3 × 10 ³ to 1 × 10 ⁷ g / mol, preferably in a range from 5 × 10 5 ³ to 1 x 10 ⁶ g / mol, and more preferably in a range of 6 x 10 ³ to 1 x 10 ⁵ g / mol. Suitable polymers are, in particular, polyamide (PA) or polyethylene-vinyl alcohol (EVOH) or a mixture thereof.

Among the polyamides, all PAs which appear suitable to the person skilled in the art for the use according to the invention are suitable. Particular mention may be made here of PA 6, PA 6.6, PA 6.10, PA 6.12, PA 11 or PA 12 or a mixture of at least two thereof, with PA 6 and PA 6.6 being particularly preferred and PA 6 furthermore being preferred. PA 6 is commercially available, for example under the trade names Akulon ^®, Durethan ^® and Ultramid ^®. Suitable addition, amorphous polyamides such as MXD6, Grivory ^® and Selar ^® PA. More preferably, the PA has a density in a range of 1.01 to 1.40 g / cm ³ , preferably in a range of 1.05 to 1.30 g / cm ^3, and more preferably in a range of 1 , 08 to 1.25 g / cm ³ . Further, it is preferable that the PA has a viscosity number in a range of 130 to 250 ml / g, and preferably in a range of 140 to 220 ml / g.

• – ein Ethylengehalt in einem Bereich von 20 bis 60 mol-%, bevorzugt von 25 bis 45 mol-%;
• – eine Dichte in einem Bereich von 1,0 bis 1,4 g/cm³, bevorzugt von 1,1 bis 1,3 g/cm³;
• – einen Schmelzpunkt in einem Bereich von mehr als 155 bis 235 °C, bevorzugt von 165 bis 225 °C;
• – einen MFR-Wert (210 °C/2,16kg, wenn T_S(EVOH) < 230 °C; 230 °C/2,16kg, wenn 210 °C < T_S(EVOH) < 230 °C) in einem Bereich von 1 bis 25 g/10min, bevorzugt von 2 bis 20 g/10min;
• – eine Sauerstoffpermeationsrate in einem Bereich von 0,05 bis 3,2 cm³·20µm/m²·day·atm, bevorzugt in einem Bereich von 0,1 bis 1 cm³·20µm/m²·day·atm.

Suitable EVOHs are all EVOH suitable for the use according to the invention. Examples of these are commercially available under the trade names EVAL ^™ from EVAL Europe NV, Belgium in a variety of different designs, such as the EVAL ^™ F104B or EVAL ^™ LR171B grades. Preferred EVOH have at least one, two, several or all of the following properties:

• An ethylene content in a range from 20 to 60 mol%, preferably from 25 to 45 mol%;
• A density in a range of 1.0 to 1.4 g / cm ³ , preferably 1.1 to 1.3 g / cm ³ ;
• A melting point in a range greater than 155 to 235 ° C, preferably from 165 to 225 ° C;
• - an MFR value (210 ° C / 2.16kg if T _{S (EVOH)} <230 ° C; 230 ° C / 2.16kg if 210 ° C <T _{S (EVOH)} <230 ° C) in a Range from 1 to 25 g / 10min, preferably from 2 to 20 g / 10min;
• An oxygen permeation rate in a range of 0.05 to 3.2 cm ^3. 20 μm / m ² .day. Atm, preferably in a range of 0.1 to 1 cm ^3. 20 μm / m ² .day.atm.

Preferably, at least one polymer layer, more preferably the inner polymer layer, or preferably all polymer layers have a melting temperature below the melting temperature of the barrier layer. This is especially true when the barrier layer is formed of polymer. Here, the melting temperatures of the at least one, in particular the polymer inner layer, and the melting temperature of the barrier layer preferably differ by at least 1 K, more preferably by at least 10 K, even more preferably by at least 50 K, more preferably at least 100 K. The temperature difference should preferably only are chosen so high that it does not melt the barrier layer, in particular not to a melting of the plastic barrier layer, during folding occurs.

According to alternative b. the barrier layer is a metal layer. In principle, all layers with metals which are known to the person skilled in the art and can provide high light and oxygen impermeability are suitable as the metal layer. According to a preferred embodiment, the metal layer may be present as a foil or as a deposited layer, e.g. after a physical vapor deposition. The metal layer is preferably an uninterrupted layer. According to a further preferred embodiment, the metal layer has a thickness in a range from 3 to 20 μm, preferably in a range from 3.5 to 12 μm and particularly preferably in a range from 4 to 10 μm.

Preferably selected metals are aluminum, iron or copper. As the iron layer, a steel layer, for example in the form of a film may be preferred. Further preferably, the metal layer is a layer with aluminum. The aluminum layer may suitably consist of an aluminum alloy, for example AlFeMn, AlFe1.5Mn, AlFeSi or AlFeSiMn. The purity is usually 97.5% and higher, preferably 98.5% and higher, based in each case on the entire aluminum layer. In a special Embodiment, the metal layer consists of an aluminum foil. Suitable aluminum foils have a ductility of more than 1%, preferably more than 1.3% and more preferably more than 1.5%, and a tensile strength of more than 30 N / mm ² , preferably more than 40 N / mm ² and more preferably more than 50 N / mm ² . Suitable aluminum foils in the pipette test show a droplet size of more than 3 mm, preferably more than 4 mm and particularly preferably more than 5 mm. Suitable alloys for making aluminum layers or foils are under the designations EN AW 1200 . EN AW 8079 or EN AW 8111 commercially available from Hydro Aluminum Deutschland GmbH or Amcor Flexibles Singen GmbH. In the case of a metal foil as a barrier layer, an adhesion promoter layer can be provided on one and / or both sides of the metal foil between the metal foil and a nearest polymer layer.

Further preferred as a barrier layer according to alternative c. a metal oxide layer may be selected. Suitable metal oxide layers are all metal oxide layers which are familiar to the person skilled in the art and which appear suitable in order to achieve a barrier action against light, vapor and / or gas. Particularly preferred are metal oxide layers based on the previously mentioned metals aluminum, iron or copper, as well as those metal oxide layers based on titanium or silicon oxide compounds. A metal oxide layer is exemplified by vapor deposition of a plastic layer, for example, an oriented polypropylene film with metal oxide. A preferred method for this is physical vapor deposition.

According to a further preferred embodiment, the metal layer of the metal oxide layer may be present as a layer composite of one or more plastic layers with a metal layer. Such a layer is obtainable, for example, by vapor-depositing a plastic layer, for example an oriented polypropylene film, with metal. A preferred method for this is physical vapor deposition.

polymer layers

In the following, the term "polymer layer" refers in particular to the inner polymer layer, the outer polymer layer and the polymer intermediate layer. In this case, a polymer layer between the carrier layer and the barrier layer is referred to as the polymer intermediate layer. A preferred polymer is a polyolefin. The polymer layers may have further constituents. The polymer layers are preferably applied or applied in an extrusion process in the sheet-like composite material. The other constituents of the polymer layers are preferably constituents which do not adversely affect the behavior of the polymer melt when applied as a layer. The further constituents may be, for example, inorganic compounds, such as metal salts or other plastics, such as other thermoplastics. However, it is also conceivable that the further constituents are fillers or pigments, for example carbon black or metal oxides. Suitable thermoplastics for the further constituents in particular those into consideration, which are easily processed by a good extrusion behavior. Among these are polymers obtained by chain polymerization, especially polyesters or polyolefins, with cyclic olefin copolymers (COC), polycyclic olefin copolymers (POC), especially polyethylene and polypropylene, being particularly preferred, and polyethylene being most preferred. Among the polyethylenes are HDPE (High Density Polyethylene), MDPE (Medium Density Polyethylene), LDPE (Low Density Polyethylene), LLDPE (Linear Low Density Polyethylene), VLDPE (Very Low Density Polyethylene) and PE (Polyethylene) as well as blends of at least two preferred thereof. It is also possible to use mixtures of at least two thermoplastics. Suitable polymer layers have a melt flow rate (MFR) in a range of 1 to 25 g / 10 min, preferably in a range of 2 to 20 g / 10 min, and more preferably in a range of 2.5 to 15 g / 10 min, and a density in a range of 0.890 g / cm ³ to 0.980 g / cm ³ , preferably in a range of 0.895 g / cm ³ to 0.975 g / cm ³ , and more preferably in a range of 0.900 g / cm ³ to 0.970 g / cm ³ . The polymer layers preferably have at least a melting temperature in a range of 80 to 155 ° C, preferably in a range of 90 to 145 ° C, and more preferably in a range of 95 to 135 ° C.

polyolefin

A preferred polyolefin is a polyethylene (PE) or a polypropylene (PP) or both. A preferred polyethylene is one selected from the group consisting of an LDPE, an LLDPE, and a HDPE, or a combination of at least two thereof. Another preferred polyolefin is a polyolefin (polyolefin made by a metallocene catalyst). Suitable polyethylenes have a melt flow rate (MFI - melt flow rate = MFR) in a range of 1 to 25 g / 10 min, preferably in a range of 2 to 20 g / 10 min and more preferably in a range of 2.5 to 15 g / 10 min, and a density in a range of 0.910 g / cm ³ to 0.935 g / cm ³ , preferably in a range of 0.912 g / cm ³ to 0.932 g / cm ³ , and more preferably in a range of 0.915 g / cm ³ to 0.930 g / cm ³ .

mPolymer

An m-polymer is a polymer made by a metallocene catalyst. A metallocene is an organometallic compound in which a central metal atom is located between two organic ligands, such as cyclopentadienyl ligands. A preferred m-polymer is an m-polyolefin, preferably a m-polyethylene or a m-polypropylene or both. A preferred m-polyethylene is one selected from the group consisting of a mLDPE, a mLLDPE, and a mHDPE, or a combination of at least two thereof.

Polymer inner layer

The inner polymer layer is based on thermoplastic polymers, wherein the inner polymer layer may include a particulate inorganic solid. However, it is preferred that the polymer inner layer contains at least 70 wt .-%, preferably at least 80 wt .-% and particularly preferably at least 95 wt .-%, each based on the total weight of the inner polymer layer, a thermoplastic polymer. Preferably, the polymer or the polymer mixture of the inner polymer layer has a density (according to ISO 1183-1: 2004 ) in a range of 0.900 to 0.980 g / cm ³ , more preferably in a range of 0.900 to 0.960 g / cm ^3, and most preferably in a range of 0.900 to 0.940 g / cm ³ .

extrude

In the extrusion, the polymers are usually heated to temperatures of 210 to 350 ° C, measured on the molten polymer film below the exit at the extruder die. The extrusion can be carried out by means of extrusion tools known to the person skilled in the art and available commercially, such as, for example, extruders, extruder screws, feedblock, etc. At the end of the extruder is preferably an opening through which the polymer melt is pressed. The orifice may be of any shape that allows the polymer melt to be extruded onto the composite precursor. For example, the opening may be angular, oval or round. The opening preferably has the shape of a slot of a funnel. In a preferred embodiment of the method, the application is effected by a slot. The slot preferably has a length in a range of 0.1 to 100 m, preferably in a range of 0.5 to 50 m, particularly preferably in a range of 1 to 10 m. Furthermore, the slot preferably has a width in a range of 0.1 to 20 mm, preferably in a range of 0.3 to 10 mm, particularly preferably in a range of 0.5 to 5 mm. During the application of the polymer melt, it is preferred that the slot and the composite precursor move relative to each other. Thus, a method is preferred wherein the composite precursor moves relative to the slot.

• b1. Austreten der Polymerschmelze als Schmelzefilm über mindestens einen Extruderdüsenschlitz mit einer Austrittsgeschwindigkeit V_aus;
• b2. Auftragen des Schmelzefilms auf den sich relativ zu dem mindestens einen Extruderdüsenschlitz mit einer Bewegungsgeschwindigkeit V_vor bewegenden Verbundvorläufer;

wobei V_aus < V_vor ist. Insbesondere bevorzugt ist es, dass V_vor um einen Faktor im Bereich von 5 bis 200, besonders bevorzugt in einem Bereich von 7 bis 150, darüber hinaus bevorzugt in einem Bereich von 10 bis 50 und am meisten bevorzugt in einem Bereich von 15 bis 35 größer ist als V_aus. Dabei ist es bevorzugt, dass das V_vor mindestens 100 m/min, besonders bevorzugt mindestens 200 m/min und ganz besonders bevorzug mindestens 350 m/min beträgt, üblicherweise jedoch nicht über 1300 m/min liegt. Nachdem die Schmelzeschicht auf den Verbundvorläufer mittels des vorstehend beschriebenen Streckverfahrens aufgebracht wurde, lässt man die Schmelzeschicht zum Zwecke der Thermofixierung abkühlen, wobei dieses Abkühlen vorzugsweise durch Abschrecken über den Kontakt mit einer Fläche erfolgt, die auf eine Temperatur in einem Bereich von 5 bis 50°C, besonders bevorzugt in einem Bereich von 10 bis 30°C gehalten wird. In a preferred extrusion coating, the polymer melt is stretched during application, which stretching is preferably by melt stretching, most preferably by monoaxial melting. For this purpose, the layer is applied to the composite precursor by means of a melt extruder in the molten state, and the applied layer, which is still in the molten state, is subsequently stretched in a preferably monoaxial direction in order to achieve an orientation of the polymer in this direction. Subsequently, the applied layer is allowed to cool for the purpose of thermosetting. In this connection, it is particularly preferred that the stretching takes place by means of at least the following application steps:

• b1. Leakage of polymer melt _from a melt film on at least one extruder die slot at an exit velocity V;
• b2. Applying the melt film to the composite relative to the at least one extruder die slot at a moving velocity V _before moving composite precursor;

where V _out <V _{in front.} It is particularly preferred that V _is larger by a factor in the range of 5 to 200, more preferably in a range of 7 to 150, more preferably in a range of 10 to 50, and most preferably in a range of 15 to 35 is as V _out . It is preferred that the V _before at least 100 m / min, more preferably at least 200 m / min and most preferably at least 350 m / min, but is usually not more than 1300 m / min. After the melt layer has been applied to the composite precursor by the stretching process described above, the melt layer is allowed to cool for the purpose of thermosetting, this cooling preferably by quenching by contact with a surface maintained at a temperature in a range of 5 to 50 ° C, more preferably in a range of 10 to 30 ° C.

According to a further preferred embodiment, the leaked surface is cooled to a temperature below the lowest melting temperature of the polymers provided in this surface or its flanks, and subsequently at least the flanks of the surface are separated from this surface. The cooling can be carried out in any manner known to those skilled in the art and appear to be suitable. Here too, the heat-setting described above is preferred. Subsequently, at least the flanks are separated from the surface. The separation can be carried out in any manner known and appropriate to those skilled in the art. The separation preferably takes place by means of a knife, laser beam or water jet, or a combination of two or more thereof, wherein the use of knives, in particular knives for paper cutting, is particularly preferred.

melting temperatures

A preferred m-polyolefin is characterized by at least a first melting temperature and a second melting temperature. Preferably, the m-polyolefin is characterized by a third melting temperature in addition to the first and second melting temperatures. A preferred first melting temperature is in a range of from 84 to 108 ° C, preferably from 89 to 103 ° C, more preferably from 94 to 98 ° C. A preferred further melting temperature is in a range of 100 to 124 ° C, preferably 105 to 119 ° C, more preferably 110 to 114 ° C.

Adhesion / adhesion promoter layer

Between layers which do not adjoin one another directly, there may be an adhesion promoter layer, preferably between the barrier layer and the inner polymer layer. Suitable adhesion promoters in a primer layer are all plastics which, by functionalization by means of suitable functional groups, are suitable for producing a solid compound by forming ionic bonds or covalent bonds to a surface of a respectively adjacent layer. Preference is given to functionalized polyolefins obtained by co-polymerization of ethylene with acrylic acids such as acrylic acid, methacrylic acid, crotonic acid, acrylates, acrylate derivatives or double bond-bearing carboxylic acid anhydrides, for example maleic anhydride, or at least two thereof. Among these, polyethylene-maleic anhydride graft polymer (GUCH), ethylene-acrylic acid copolymers (EAA) or ethylene-methacrylic acid copolymers (EMAA) are preferred, which, for example, under the trade names Bynel ^® and Nucrel ^® 0609HSA by DuPont or Escor ^® 6000ExCo from ExxonMobil Chemicals to be expelled.

According to the invention, it is preferred that the adhesion between a carrier layer, a polymer layer or a barrier layer to the respective next layer is at least 0.5 N / 15 mm, preferably at least 0.7 N / 15 mm and particularly preferably at least 0.8 N / 15 mm , In one embodiment according to the invention, it is preferred that the adhesion between a polymer layer and a carrier layer is at least 0.3 N / 15 mm, preferably at least 0.5 N / 15 mm and particularly preferably at least 0.7 N / 15 mm. Furthermore, it is preferred that the adhesion between a barrier layer and a polymer layer is at least 0.8 N / 15 mm, preferably at least 1.0 N / 15 mm and particularly preferably at least 1.4 N / 15 mm. In the event that a barrier layer indirectly follows a polymer layer via an adhesion promoter layer, it is preferred that the adhesion between the barrier layer and the adhesion promoter layer is at least 1.8 N / 15 mm, preferably at least 2.2 N / 15 mm and particularly preferably at least 2, 8 N / 15mm. In a particular embodiment, the adhesion between the individual layers is so strong that it comes to a tearing of a carrier layer in the adhesion test, in the case of a carton as a carrier layer to a so-called cardboard fiber tear.

bonding agent

Suitable adhesion promoters in the polymer interlayer are all plastics which, by functionalization by means of suitable functional groups, are suitable for producing a solid compound by forming ionic bonds or covalent bonds to a surface of a respectively adjacent layer. Preference is given to functionalized polyolefins obtained by co-polymerization of ethylene with acrylic acids such as acrylic acid, methacrylic acid, crotonic acid, acrylates, acrylate derivatives or double bond-bearing carboxylic acid anhydrides, for example maleic anhydride, or at least two thereof. These include polyethylene-maleic anhydride graft polymers (EMAH), Ethylene-acrylic acid copolymers (EAA) or ethylene-methacrylic acid copolymers (EMAA) is preferably that sold for example under the trade names Bynel ^® and Nucrel ^® 0609HSA by DuPont or Escor ^® 6000ExCo from ExxonMobil Chemicals

components

The first component is adapted to receive the composition into the recesses, also called cups, and to transfer at least a portion of the composition from the recesses to the outer surface of the sheet composite. For this purpose, the outer surface is preferably pressed against the first component surface. A preferred first component is a printing plate or a pressure roller or both.

A preferred printing plate is a gravure printing plate. A preferred pressure roller is a gravure roller. A preferred first component surface is flat or formed as a cylinder surface or both. A preferred additional component is another roller. A preferred further roller is a counter-pressure roller. A preferred counterpressure roller is a impression roller. The impression roller preferably consists of a hard material coated with a rubber layer, such as wood or metal.

composition

A preferred composition is a solution or suspension or both. Another preferred composition is a printing ink. A preferred ink is an ink for gravure printing. A preferred colorant is a pigment. Preferably, the composition in the recesses each contains a convex surface.

Contact / Print

A preferred contacting is a pressing. Preferably, the contacting is a printing. Here, the sheet-like composite is preferably passed through a gap between the gravure roll (first or further component) and the impression roller (additional component).

topcoat

A preferred cover layer is a "dash". A "line" in papermaking is a cover layer which contains inorganic solid particles, preferably pigments and additives. The "line" is preferably applied as a liquid phase, preferably as a suspension or dispersion, to a surface of a paper- or cardboard-containing layer. A preferred dispersion is an aqueous dispersion. A preferred suspension is an aqueous suspension. Another preferred liquid phase includes inorganic solid particles, preferably pigments; a binder; and additives. A preferred pigment is selected from the group consisting of calcium carbonate, kaolin, talc, silicate, a plastic pigment and titanium dioxide. A preferred kaolin is a calcined kaolin. A preferred calcium carbonate is one selected from the group consisting of marble, chalk and a precipitated calcium carbonate (PCC), or a combination of at least two thereof. A preferred silicate is a layered silicate. A preferred plastic pigment is spherical, preferably hollow spherical. A preferred binder is one selected from the group consisting of styrene-butadiene, acrylate, acrylonitrile, a starch and a polyvinyl alcohol, or a combination of at least two thereof, with acrylate being preferred. A preferred starch is one selected from the group consisting of cationically modified, anionically modified and fragmented, or a combination of at least two thereof. A preferred additive is one selected from the group consisting of a rheology modifier, a tint dye, an optical brightener, an optical brightener support, a flocculant, a deaerator, and a surface energy modifier, or a combination of at least two thereof. A preferred deaerator is a paint detractor, preferably silicone based or fatty acid based, or both. A preferred surface energy modifier is a surfactant.

container precursor

A container precursor is a precursor of the closed container resulting in the manufacture of a closed container. Here, the container precursor includes the sheet-like composite as a blank. Here, the sheet-like composite may be unfolded or folded. A preferred container precursor is tailored and configured to produce a single closed container. One preferred container precursor, which is tailored and configured to make a single closed container, is also referred to as a jacket or sleeve. Here, the jacket or sleeve includes the sheet-like composite folded. Furthermore, the sheath or sleeve includes a longitudinal seam and is open in a head area and a floor area. A typical container precursor, which is tailored and configured to produce a plurality of closed containers, is often referred to as a tube.

Another preferred container precursor is open, preferably in a head region or a head region, more preferably in both. A preferred container precursor is a jacket-shaped or tubular or both. Another preferred container precursor includes the printed sheet composite such that the printed sheet composite is folded at least 1 time, preferably at least 2 times, more preferably at least 3 times, most preferably at least 4 times. A preferred container precursor is integrally formed. Particularly preferably, a bottom region of the container precursor is formed integrally with a lateral region of the container precursor.

container

The closed container according to the invention can have a multiplicity of different shapes, but a substantially cuboid-shaped structure is preferred. Furthermore, the container may be formed over its entire surface from the sheet-like composite, or have a 2- or multi-part structure. In a multi-part construction, it is conceivable that in addition to the sheet-like composite, other materials are used, such as plastic, which can be used in particular in the head or bottom portions of the container. In this case, however, it is preferred that the container is constructed to be at least 50%, particularly preferably at least 70% and moreover preferably at least 90% of the area of the sheet-like composite. Furthermore, the container may have a device for emptying the contents. This can for example be formed from a polymer or mixture of polymers and applied to the outside of the container. It is also conceivable that this device is integrated by "direct injection molding" in the container. According to a preferred embodiment, the container according to the invention at least one, preferably from 4 to 22 or more edges, more preferably from 7 to 12 edges. As an edge in the context of the present invention, areas are understood to arise when folding a surface. As exemplary edges are the elongated contact areas of each two wall surfaces of the container, also referred to herein as longitudinal edges, called. In the container, the container walls preferably represent the surfaces of the container framed by the edges. Preferably, the interior of a container according to the invention comprises a foodstuff. Preferably, the closed container does not include a lid or bottom not integrally formed with the sheet-like composite, or both. A preferred closed container includes a food.

food

A preferred closed container according to the invention includes a foodstuff. Suitable foods are all foods known to the person skilled in the art for human consumption and also animal feed. Preferred foods are liquid above 5 ° C, for example, dairy products, soups, sauces, non-carbonated beverages. The filling of the container or the container precursor can take place in various ways. First, the food and container or container precursor may be separated prior to filling by appropriate means such as treatment of the container or container precursor with H ₂ O ₂ , UV radiation or other suitable high-energy radiation, plasma treatment or a combination of at least two thereof; and the heating of the food are sterilized as far as possible and then filled into the container or the container precursor. This type of filling is often referred to as "aseptic filling" and is preferred in accordance with the invention It is further widespread, in addition to aseptic filling, that the food-filled container or container precursor be heated to reduce the number of bacteria, preferably by pasteurization or autoclaving, this procedure may also use less sterile food and containers or container precursors.

Hole / opening aid

In order to facilitate the Öffenbarkeit of the closed container according to the invention, a carrier layer may have at least one hole. In a particular embodiment, the hole is covered at least with a barrier layer, and preferably a polymer layer, as a hole top layer. Furthermore, one or more further layers, in particular adhesion promoter layers, can be provided between the already mentioned layers. In this case, it is preferable for the hole cover layers to be at least partially, preferably at least 30%, preferably at least 70% and particularly preferably at least 90% of the surface formed by the hole are interconnected. According to a particular embodiment, it is preferred that the hole penetrates the entire sheet-like composite and is covered by a closure or opening device closing the hole. In connection with a preferred embodiment, the hole provided in the carrier layer may have any shape known to those skilled in the art and suitable for various closures, drinking straws or opening aids. In most cases, a closed container is opened by at least partially destroying the hole covering layers covering the hole. This destruction can be done by cutting, pushing into the container or pulling out of the container. Destroying can take place by means of an openable closure connected to the container and located in the region of the hole, usually above the hole, or a drinking straw which is pushed through the perforated covering layers covering the hole.

According to a further preferred embodiment, a carrier layer of the sheet-like composite has a plurality of holes in the form of a perforation, wherein the individual holes are covered with at least one barrier layer, and preferably a polymer layer, as hole top layers. A container made from such a composite can then be opened by tearing along the perforation. Such holes for perforations are preferably generated by means of a laser. Particularly preferred is the use of laser beams when a metal foil or a metallized film is used as the barrier layer. It is also possible that the perforation by mechanical, usually blades having perforation tools is introduced.

According to a further preferred embodiment, the sheet-like composite is subjected to a thermal treatment at least in the region of the at least one hole. In the case of a plurality of holes in the carrier layer present in the form of a perforation, it is particularly preferred to carry out this thermal treatment also around the edge region of the hole , The thermal treatment can be carried out by radiation, by hot gas, by a solid-state heat contact, by mechanical vibrations, preferably by ultrasound, or by a combination of at least two of these measures. The thermal treatment is particularly preferably carried out by irradiation, preferably electromagnetic radiation and in particular preferably electromagnetic induction or also by hot gas. The optimum operating parameters to be selected in each case are known to the average person skilled in the art.

colorants

Colorant is after DIN 55943: 2001-10 the collective term for all coloring substances, in particular for dyes and pigments. A preferred colorant is a pigment. A preferred pigment is an organic pigment. Considerable pigments in connection with the invention are in particular those described in DIN 55943: 2001-10 and in US Pat "Industrial Organic Pigments, Third Edition." (Willy Herbst, Klaus Hunger Copyright © 2004 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim ISBN: 3-527-30576-9 ) mentioned pigments.

MEASUREMENT METHODS

The following measurement methods were used in the invention. Unless otherwise stated, measurements were taken at an ambient temperature of 25 ° C, an ambient air pressure of 100 kPa (0.986 atm) and a relative humidity of 50%.

MFR

The MFR value is calculated according to the Standard ISO 1133 (unless otherwise stated at 190 ° C and 2.16 kg).

density

The density is calculated according to the Standard ISO 1183-1 measured.

melting temperature

• – Temperatur Indium – Onset Temperatur,
• – Schmelzwärme Indium,
• – Temperatur Zink – Onset Temperatur.

The melting temperature is determined by the DSC method ISO 11357-1 . ISO 11357-5 certainly. The device calibration is carried out according to the manufacturer's instructions on the basis of the following measurements:

• - temperature indium - onset temperature,
• - heat of fusion indium,
• - Temperature zinc - Onset temperature.

Viscosity number of PA

The viscosity number of PA is calculated according to the Standard ISO 307 measured in 95% sulfuric acid.

oxygen permeation

The oxygen permeation rate is determined according to Standard ISO 14663-2 Appendix C determined at 20 ° C and 65% relative humidity.

Moisture content of the cardboard

The moisture content of the cardboard is determined by the Standard ISO 287: 2009 measured.

liability

To determine the adhesion of two adjacent layers, these are fixed on a 90 ° peel test device, for example the company Instron "German rotating wheel fixture", on a rotatable roller, which rotates during the measurement at 40 mm / min. The samples were previously cut into 15 mm wide strips. On one side of the sample, the layers are released from each other and clamped the detached end in a vertically upward traction device. On the pulling device, a measuring device for determining the tensile force is attached. When turning the roller, the force needed to separate the layers is measured. This force corresponds to the adhesion of the layers to each other and is given in N / 15 mm. The separation of the individual layers, for example, mechanically, or by a targeted pretreatment, for example by soaking the sample for 3 min in 60 ° C warm, 30% acetic acid take place.

Molecular weight distribution

The molecular weight distribution after gel permeation chromatography by means of light scattering: ISO 16014-3 / -5 measured.

Missing halftone dots

For examination under a light microscope, five areas of the printed container or laminate having a size of 10 mm × 10 mm are examined. An unprinted dot of the print grid corresponds to a missing grid point. The missing grid points are counted for each of the five areas. The arithmetic mean (average value) of the five measurements corresponds to the value "missing halftone dots".

Detection of colorants

Detection of organic colorants may be carried out in accordance with the procedures given in "Industrial Organic Pigments, Third Edition." (Willy Herbst, Klaus Hunger Copyright © 2004 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim ISBN: 3-527-30576-9 ) methods described.

Flächdeckungsgrad

The area coverage is a measure of how covered a color area appears to a normal observer. The area coverage can be calculated using the Murray-Davies formula. All area coverage data in this document were measured using a spectrophotometer (SpectroEye ^™ ) from X-Rite (Ch-8105 Regensdorf).

Residue on ignition

The norm DIN EN ISO 186 following (differing from the DIN EN 20 287 ) 50 mm x 50 mm (0.0025 m ² ) specimens are prepared from the packaging containers or packaging container precursors or laminates to be tested for determining the loss on ignition.

• 1. Die Kartonlagen werden durch Auseinanderziehen getrennt. Dabei wird die Kartondecklage mit der Strichschicht und der ggf. vorhandenen äußeren Polymerschicht von der Mittellage getrennt. Die Mittellage, die die innere Polymerschicht beinhaltet, wird verworfen.
• 2. Die ggf. vorhandene äußere Polymerschicht und die Decklage des Kartons inklusive des Strichs werden anschließend gemäß der DIN 54370 mit dem Glühverfahren A bei 575°C für ca. 3 Stunden verascht.
• 3. Der Glührückstand wird ausgewogen. Der Absolutwert wird in Milligramm (mg) angegeben.

Then the following steps are performed:

• 1. The cardboard layers are separated by pulling apart. In this case, the cardboard cover layer with the coating layer and the possibly present outer polymer layer is separated from the middle layer. The middle layer containing the inner polymer layer is discarded.
• 2. The possibly existing outer polymer layer and the top layer of the cardboard including the line are then according to the DIN 54370 incinerated with the annealing process A at 575 ° C for about 3 hours.
• 3. The Glückückstand is balanced. The absolute value is given in milligrams (mg).

Layer thickness of the polymer outer layer / paint application

From the composite material to be examined (laminate, laminar composite), a sample about 2.5 to 3.0 cm x 1.0 to 1.5 cm in size is taken. The longitudinal side of the sample is taken transversely to the direction of extrusion and the fiber direction of the carton. The sample is fixed in a metal clamp that forms a smooth surface. The supernatant of the sample should not be more than 2-3 mm. The metal clamp is fixed before the cut. In order to obtain a clean cut, in particular of the cardboard fiber, the part of the sample protruding from the metal clamp is frozen with cold spray. Subsequently, this is removed by means of a disposable blade. The fixation of the sample in the metal clamp is now loosened so that the sample can be pushed approx. 3-4 mm out of the metal clamp. Then it is fixed again. For examination in a light microscope, the sample is placed in the sample holder on the object table of the light microscope under one of the objectives. The right lens should be selected according to the layer thickness of the area to be examined. The exact centering takes place during microscopy. The light source is in most cases a side lighting (goosenecks). If necessary, the incident light illumination of the light microscope is used additionally or alternatively. If the sample is optimally sharpened and illuminated, the individual layers of the composite can be seen. For documentation and measurements, an Olympus camera with matching image processing software by Analysis is used. The layer thickness of the polymer outer layer is given in absolute microns (μm).

Device equipment used:
Light microscope; Nicon Eclipse E800
lenses; Magnification X2.5; X5; X10; X20; X50
Lighting: goosenecks
Camera: Olympus DP 71
Software: analySIS

Disposable blades; Fa. Leica (Microtome Blades)
Sample holder: metal clamp
Cooler spray
Allen key
vice
Cut gloves
scissors

Electric charging / electrical voltages

In order to measure a charge of the laminate by an electrode or a tension of the laminate, the measurement in the transverse direction (transverse to the web movement) is made centrally on the composite web 1 cm apart with a Fluke 280 combined with a Fluke 80k-6 high voltage probe by Fluke Deutschland GmbH, Glottertal, Germany. Furthermore, the measurement in the direction of the web movement is performed centrally between the electrode, by which the electrical charges are applied to the sheet-like composite, and the component, with which the sheet-like composite is printed, on the outer surface of the laminate. The meter measures the electric field as a measure of the charge of the laminar composite. Furthermore, the meter determines from this applied voltage. The same meter also measures the other electrical voltages listed herein.

The invention will be further illustrated by way of examples and drawings, the examples and drawings not limiting the invention. Furthermore, the drawings are schematic and not to scale.

Production of the composite material (laminate)

• 1. Zunächst wird der Karton im Labor gemäß den Beispielen und Vergleichsbeispielen mit einer oder mehreren Schichten eines flüssigen Strichs gestrichen. Die Anzahle der aufzutragenden Strichschichten bemisst sich hierbei nach dem zu erzielenden Glührückstand des Laminats. Der Glührückstand ist jeweils in den unten stehenden Tabellen für die Beispiele und Vergleichsbeispiele angegeben. Die Rezeptur des Strichs ist hierbei: 100 Teile Pigment (Hydrocarb 60; Omya Inc; Cincinnati, US) und 20 Teile Bindemittel / SB Latex (MAINCOTE^TM HG-56; Dow; Germany). Hierbei hat ein flächenförmiger Verbund mit einem Glührückstand von 50 mg eine doppelt gestrichene Trägerschicht, ein flächenförmiger Verbund mit einem Glührückstand von 30 mg eine einfach gestrichene Trägerschicht, und ein flächenförmiger Verbund mit einem Glührückstand von 2 mg eine ungestrichene Trägerschicht.
• 2. Im Extrusionsbeschichtungsverfahren werden die gestrichenen Kartone mit einer äußeren Polymerschicht sowie den unten angegebenen inneren Schichten beschichtet. Die Herstellung des Laminats erfolgt mit einer Extrusionsbeschichtungsanlage der Firma Davis Standard. Im ersten Schritt wird die Polymeraußenschicht auf die Trägerschicht aufgebracht. Im zweiten Schritt wird die Kaschierschicht zusammen mit der Barriereschicht auf die vorher mit der Polymeraußenschicht beschichteten Trägerschicht aufgebracht. Im letzten Schritt wird die Polymerinnenschicht auf die Barriereschicht aufgebracht. Zum Aufbringen der einzelnen Schichten werden die Polymere oder Polymerblends in einem Extruder ausgeschmolzen. Beim Aufbringen eines Polymers oder Polymerblends in einer Schicht wird die entstandene Schmelze über einen Feedblock in eine Düse überführt und auf die Trägerschicht extrudiert. Beim Aufbringen von mehreren Polymeren oder Polymerblends in einer Schicht werden die entstandenen Schmelzen über einen Feedblock zusammengeführt und dann gemeinsam auf die Trägerschicht extrudiert.
• 3. Die erhaltenen Verbundmaterialien werden entweder a) ganz ohne Aufladen des Laminats (nicht erfindungsgemäße Vergleichsbeispiele), b) mit Aufladen über den Presseurs, welcher die Innenoberfläche (Polymerinnenschicht) des Laminats kontaktiert, c) mit Aufladen durch jeweils eine Elektrode vor jedem Druckwalzen-Presseurpaar, wobei an allen Elektroden dieselbe Spannung anliegt, oder d) mit Aufladen über eine Ladeelektrode vor jedem Druckwalzen-Presseurpaar und Entladen über eine stromab jedes Druckwalzen-Presseurpaares angeordnete Entladeelektrode im Tiefdruck mit einem Dekor aus 6 Farbaufträgen bedruckt. Somit befinden sich gemäß Punkt d) zwischen aufeinanderfolgenden Druckwalzen-Presseurpaaren jeweils eine Lade- und eine Entladeelektrode. Hierbei liegt an den Ladeelektroden eine Spannung mit zu den Entladeelektroden verschiedenem Vorzeichen an. Für das Bedrucken mit dem 6-farbigen Dekor kommen 6 Druckwalzen-Presseurpaare nacheinander zum Einsatz.
• 4. Die Druckqualität wird entsprechend der Messmethoden analysiert.

A commercial uncoated paperboard (NaturaD UC 200mN, Stora Enso AB, Stockholm, Sweden) is treated according to the following steps:

• 1. First, the board in the laboratory according to the examples and comparative examples with one or more layers of a liquid coating is painted. The number of coating layers to be applied is determined here by the firing residue of the laminate to be achieved. The incineration residue is indicated in each case in the tables below for the examples and comparative examples. The formulation of the stroke is 100 parts pigment (Hydrocarb 60, Omya Inc, Cincinnati, US) and 20 parts binder / SB latex (MAINCOTE ^™ HG-56; Dow; Germany). In this case, a sheet-like composite having an incineration residue of 50 mg has a double-coated carrier layer, a sheet-like composite with an incineration residue of 30 mg a single-coated carrier layer, and a sheet-like composite with an incineration residue of 2 mg an uncoated carrier layer.
• 2. In the extrusion coating process, the coated cartons are coated with an outer polymer layer and the inner layers given below. The production of the laminate takes place with an extrusion coating plant of Davis Standard. In the first step, the polymer outer layer is applied to the carrier layer. In the second step, the laminating layer is applied together with the barrier layer on the previously coated with the polymer outer layer carrier layer. In the last step, the polymer inner layer is applied to the barrier layer. To apply the individual layers, the polymers or polymer blends are melted out in an extruder. When applying a polymer or polymer blend in a layer, the resulting melt is transferred via a feed block in a nozzle and extruded onto the carrier layer. When applying several polymers or polymer blends in one layer, the resulting melts are combined via a feed block and then extruded together onto the carrier layer.
• 3. The resulting composite materials are either a) completely without charging the laminate (comparative examples not according to the invention), b) with charging via the impression roller, which contacts the inner surface (inner polymer layer) of the laminate, c) with charging by one electrode before each pressure roller Impression roller, wherein at all electrodes the same voltage is applied, or d) printed with charging via a charging electrode in front of each pair of pressure rollers and unloading via a discharge electrode arranged downstream of each pair of pressure roller discharge electrode in gravure with a decor of 6 paint jobs. Thus, according to point d) between successive pressure roller impression rollers each have a charging and a discharge electrode. In this case, a voltage with different sign to the discharge electrodes is applied to the charging electrodes. For printing with the 6-colored decor, 6 pressure roller impression pairs are used one after the other.
• 4. The print quality is analyzed according to the measurement methods.

Examples and Comparative Examples with electrically conductive barrier layer

For the examples given below and the comparative examples, laminates having the following layer structure were used. These were obtained and tested in accordance with 1. to 4. above. colored decoration Polymer outer layer: LDPE Novex ^® M19N430 Ineos Köln GmbH stroke Backing: NaturaD UC 200mN; Stora Enso AB; Stockholm Sweden LDPE Novex ^® M19N430 Ineos Köln GmbH Barrier layer: aluminum EN AW 8079 from Hydro Aluminum Deutschland GmbH with a layer thickness of 6 μm PE blend containing 30% by weight of a mLDPE and 70% by weight of an LDPE with areal weight of 22 g / m ²

Comparative Examples 1 to 4 (not according to the invention)

For Comparative Examples 1 to 4, the printing was carried out according to the above point 3a) without charging the laminate. Comparative example Thick polymer outer layer [μm] Residue on ignition [mg] Number of missing halftone dots in color order 1 [per 100 mm ² ] Number of missing halftone dots in each color order 2-6 [per 100 mm ² ]) 1 15 50 9 9 2 15 30 15 15 3 15 2 121 121 4 11 30 45 45

Comparative Examples 5 to 8 (not according to the invention)

For Comparative Examples 5 to 8, the printing was carried out according to the above point 3b) on the impression rollers of each printing unit, wherein the same voltage was applied to each impression roller. Comparative example Thick polymer outer layer [μm] Residue on ignition [mg] Number of missing halftone dots in color order 1 [per 100 mm ² ] Number of missing halftone dots in each color order 2-6 [per 100 mm ² ]) 5 15 50 10 10 6 15 30 16 16 7 15 2 128 128 8th 11 30 42 42

Comparative Examples 9 to 12 (not according to the invention)

For Comparative Examples 9 to 12, the printing was carried out according to the above point 3c ) with charging by one electrode before each pair of pressure roller impression rollers, wherein the same voltage was applied to all electrodes. Here no additional discharge electrodes were used. Comparative Examples Thick polymer outer layer [μm] Residue on ignition [mg] Number of missing halftone dots in color order 1 [per 100 mm ² ] Number of missing halftone dots in each color order 2-6 [per 100 mm ² ] 9 15 50 0 6 10 15 30 0 15 11 15 2 7 32 1 2 11 30 7 32

Examples 1 to 4 (according to the invention)

For Examples 1 to 4, the printing was carried out according to the above point 3d). Thus, 6 pressure roller impression pairs, each with electrodes as in 5 shown, inserted one after the other. Examples Thick polymer outer layer [μm] Residue on ignition [mg] Number of missing halftone dots in color order 1 [per 100 mm ² ] Number of missing halftone dots in each color order 2-6 [per 100 mm ² ] 1 15 50 0 0 2 15 30 0 0 3 15 2 7 7 4 11 30 6 6

The printing was done in the above examples and comparative examples for each printing unit with 60 dots per cm. The layer thicknesses of the polymer outer layers given in the above tables are measured up to ± 1.5 μm in each case.

evaluation

Between Comparative Examples 1 to 4 on the one hand and Comparative Examples 5 to 8, there is no improvement in the parameters listed above within the scope of statistical deviations. In Comparative Examples 9 to 12, an improvement of the printed image was achieved. In this case, however, it is noticeable that the results for the second and subsequent color application are worse than for the first color application. This disadvantage could be eliminated in Examples 1 to 4. Here, according to the invention, a decor having 6 paint jobs of very good print quality is obtained. In addition, the tests have shown that the color drying after each printing unit could be improved, i. The printed ink dried faster with the same drying performance after each printing unit. Here, in Comparative Examples 9 to 12, an improvement over Comparative Examples 1 to 8 only for the first paint application. In Examples 1 to 4 showed an improvement for all 6 paint jobs. Thus, since a shorter drying time is achieved according to the invention for all ink applications, the laminate can be guided through the printing units at a higher speed. This can shorten the time required to print the laminate. This increases the productivity of the laminate production and makes the production more favorable.

Show it:

1 a flow diagram of the method according to the invention;

2a) a schematic cross section through a sheet-like composite according to the invention;

2 B) a schematic cross section through a further inventive sheet-like composite;

3 a schematic cross section through a first component according to the invention;

4a) a schematic cross section through a printed sheet-like composite according to the invention;

4b) a schematic cross section through another printed composite sheet according to the invention;

5 a schematic view of a device according to the invention;

6 a schematic view of a container precursor according to the invention;

7 a schematic view of a closed container according to the invention;

8th a schematic section of an enlarged plan view of a printed sheet-like composite according to the invention;

9 a schematic section of an enlarged plan view of a non-inventive printed sheet-like composite;

10 a print quality plot according to a method not according to the invention; and

11 a plot of the print quality according to the inventive method.

1 shows a flowchart of the method according to the invention 100 , In a process step a) 101 of the procedure 100 becomes the sheet-like composite 200 according to 2 provided. This planar composite has a first electrical charge. That is, the sheet-like composite as a whole has a total charge which is the first electric charge. In process step a) 101 is the sheet-like composite preferably electrically neutral. In a process step b) 102 the method according to the invention 100 becomes a first component 300 according to 3 provided. The first component 300 moves in a first direction 304 , Here is the first component 300 a gravure cylinder, which is in a first direction 304 , which is a first direction of rotation, rotates. The gravure cylinder has another electrical charge. He is electrically neutral and grounded. In a process step c) 103 the absolute amount of the difference between the first electrical charge and the further electrical charge is increased. This is done by electrically negative charging of the sheet-like composite. For this purpose, electrons by means of an electrode 502 on the outside surface 201 of the sheet-like composite 200 applied. In a process step d) 104 becomes the outer surface 201 of the sheet-like composite 200 with the first component surface 301 contacted. For this he is sheet-like composite 200 by means of an additional component 501 , a press driver, pressed against the gravure cylinder. The impression roller rotates in one direction 503 , which is a direction of rotation. The first direction of rotation 304 is the direction of rotation 503 in opposite directions. At process step d) 104 follows in 1 a process step e). In it are through a second electrode 506 Cargoes from the composite 200 , in particular over its outer surface 201 transferred or accepted. The procedure 100 especially with the device 500 according to 5 be executed.

2a) shows a schematic cross section through a sheet-like composite according to the invention 200 , The sheet-like composite 200 consists of the following layers overlapping each other in this order from an outer surface 201 of the sheet-like composite 200 to an inner surface 202 of the sheet-like composite 200 : a carrier layer 203 made of cardboard, an LDPE layer 204 , a primer layer 205 , a barrier layer 206 made of aluminum, an EAA layer 207 , and a polymer inner layer 208 , In this case, there is the polymer inner layer 208 from a polymer blend containing 80% by weight of mPE and 20% by weight of LDPE, each based on the total weight of the polymer blend. Here is the outer surface 201 one of the barrier layers 206 remote surface of the carrier layer 203 , Furthermore, the outer surface 201 that surface of the sheet-like composite 200 which in one of the sheet-like composite 200 has produced food container to the outside. The inner surface 202 is the surface of the sheet-like composite 200 which in one of the sheet-like composite 200 produced food container facing inwards and therefore in contact with the filled food 701 stands. The in 2a) illustrated sheet-like composite 200 in particular according to the method 100 to 1 or with the help of the device 500 to 5 or both are printed with a decor.

2 B) shows a schematic cross section through a further inventive sheet-like composite 200 , The sheet-like composite 200 to 2 B) is the after 2a) , where in 2 B) the carrier layer 203 so from a polymer outer layer 209 Polyethylene layer is superimposed on the outer surface 201 a surface of the polymer outer layer 209 is.

3 shows a schematic cross section through a first component according to the invention 300 , The first component 300 included a first component surface 301 , containing a variety of recesses 302 , The first component 300 is a gravure cylinder and the first component surface 301 is a cylindrical surface of the gravure cylinder. The recesses 302 are cups. The wells each contain a composition 303 , This is in the 3 shown by the larger dashed circle on the right side of the 3 an enlarged view of the cup in the smaller dashed circle on the left side of the 3 shows. The composition 303 is an ink containing a colorant. The colorant is a pigment. The gravure cylinder moves in a first direction 304 by rotating in a first direction of rotation.

4a) shows a schematic cross section through a printed sheet-like composite according to the invention 400 , The printed sheet-like composite 400 consists of the following layers overlapping each other in this order from an outer surface 201 of the printed sheet-like composite 400 to an inner surface 202 of the printed sheet-like composite 400 : a paint job 401 ; a carrier layer 203 made of cardboard, an LDPE layer 204 , a primer layer 205 , a barrier layer 206 made of aluminum, an EAA layer 207 , and a polymer inner layer 208 , In this case, there is the polymer inner layer 208 from a polymer blend containing 80% by weight of mPE and 20% by weight of LDPE, each based on the total weight of the polymer blend. The paint job 401 includes a first paint application area 402 and another paint application area 403 , The first inking area 402 adjoins the other paint application area 403 at. The first inking area is marked by a coverage of 80%. The further inking area is characterized by a coverage of the same color of 5%. The paint job 401 is a decoration of the printed sheet-like composite 400 , This decor has an improved contrast of area coverage with respect to the aforementioned color. The outer surface 201 is one of the carrier layer 203 opposite surface of the paint application 401 , Furthermore, the outer surface 201 that surface of the printed sheet composite 400 , which in one of the printed sheet-like composite 400 has produced food container to the outside. The inner surface 202 is the surface of the printed sheet-like composite 400 , which in one of the printed sheet-like composite 400 produced food container facing inwards and therefore in contact with the filled food 701 stands. The printed sheet-like composite 400 is particularly available by printing the sheet-like composite 200 to 2a) according to the method 100 to 1 or with the help of the device in 5 or both.

4b) shows a schematic cross section through another printed composite sheet according to the invention 400 , The printed sheet-like composite 400 to 4b) is the after 4a) , where in 4b) between the paint job 401 and the carrier layer 203 a polymer outer layer 209 made of polyethylene. The paint job 401 is on the polymer outer layer 209 printed.

5 shows a schematic view of a device according to the invention 500 , The device 500 is suitable for printing the sheet-like composite 200 according to 2a) and 2 B) with a decor by means of a gravure printing process. In particular, the device 500 configured to carry out the method 100 to 1 , The device 500 includes a sheet-like composite 200 according to 2a) , This is on a designed as a drum feeder 505 held with several layers of composite. Furthermore, the device includes 500 a first component 300 , which is a gravure cylinder, according to the 3 , Here is the gravure cylinder by means of grounding 504 grounded. For this purpose, in particular, a shaft which functions as a rotation axis of the gravure cylinder may be grounded. The gravure cylinder moves in a first direction 304 in that the gravure cylinder rotates in a first direction of rotation. The device 500 further includes an additional component 501 , which is an impressionist. The impression roller moves in one direction 503 by moving the impression roller in a direction of rotation 503 rotates. This direction of rotation 503 is to the first direction of rotation 304 in opposite directions. The impression roller guides the laminar composite 200 so that the outer surface 201 of the sheet-like composite 200 to the first component surface 301 with the recesses 302 is pressed. Here is the sheet-like composite 200 passed through a gap between the impression roller and the gravure roll and thereby printed. The device 500 further includes a first electrode 502 which is arranged and configured to impart electrons to the outer surface 201 of the sheet-like composite 200 applies. In this case, the same applies to every subarea of the outer surface 201 that first electrons from the electrode 502 are applied to the sub-area and then the sub-area is printed by contact with the gravure roll. Thus, the sheet-like composite 200 electrically negatively charged during the gravure cylinder and the composition 303 , which is a printing ink, are electrically neutral. Thus, there are electrostatic forces of attraction between the ink and the outer surface 201 of the sheet-like composite 200 , As in the enlarged area right in 5 As shown, the ink in the wells contains a convex, ie convex, surface. After a section of the composite 200 has passed through the gravure roll, the portion is at a second electrode 506 past. The present one is the electrode 506 on the outside surface 201 of the composite 200 provided to further discharge the composite 200 contribute. On the further electrode 506 follows in 5 a designed as a drum discharge device 508 ,

6 shows a schematic view of a container precursor according to the invention 600 , The container precursor shown here 600 is a coat. The coat includes a head area 602 and a floor area 603 , The head area 602 and the floor area 603 each contain creases 604 , By folding along the creases 604 and seals can each be the header area 602 and the floor area 603 be closed and thus a closed container 700 according to 7 to be obtained from the coat. Accordingly, the container precursor 600 a precursor of the closed container resulting in the container manufacturing process 700 , This includes the container precursor 600 a blank of the sheet-like composite 400 according to 4a) , In the container precursor 600 is the sheet-like composite 400 folded; he contains 4 folds here 601 , In addition, the coat includes a longitudinal seam 605 , along the end portions of the sheet-like composite 400 are sealed on each other.

7 shows a schematic view of a closed container according to the invention 700 , The closed container 700 is available by folding the container precursor 600 in 6 along the creases 604 and sealing folded areas to close the header area 602 and the floor area 603 , Accordingly, the closed container includes 700 a blank of the sheet-like composite 400 according to 4a ). Furthermore, the closed container includes at least 8 folds 601 , The closed container 700 surrounds an interior, which is a food 701 includes. The food 701 can be liquid, but also contain solid components. The in 7 shown closed container 700 is integrally formed. In addition, the closed container 700 To improve the Öffenbarkeit be fitted with a Fitment. This is especially the case when the carrier layer 203 of the sheet-like composite 400 has a hole.

8th shows a schematic section of an enlarged plan view of a paint job 401 a printed sheet-like composite according to the invention 400 , The paint job 401 was by printing with the device 500 according to 5 and consists of printed halftone dots 801 , The printed sheet-like composite 400 consists of the following layers overlapping each other in this order from an outer surface 201 of the printed sheet-like composite 400 to an inner surface 202 of the printed sheet-like composite 400 : the paint application 401 ; a polymer outer layer 209 LDPE Novex ^® M19N430 Ineos Köln GmbH; a simple stroke, obtainable by brushing with a liquid formulation containing 100 Parts of pigment (Hydrocarb 60, Omya Inc, Cincinnati, US) and 20 parts of binder / SB latex (MAINCOTE ^™ HG-56; Dow; Germany); a carrier layer 203 from NaturaD UC 200mN, Stora Enso AB, Stockholm Sweden; an LDPE layer 204 LDPE Novex ^® M19N430 Ineos Köln GmbH; a barrier layer 206 made of aluminium EN AW 8079 from Hydro Aluminum Deutschland GmbH with a layer thickness of 6 μm; and a polymer inner layer 208 from a PE blend, containing 30% by weight of an mLDPE and 70% by weight of an LDPE, in each case based on the total weight of the inner polymer layer 208 , with a basis weight of 22 g / m ² . The paint job 401 consists of a printed image obtained in gravure printing, characterized by a grid with 60 dots per cm and a coverage of 30%.

9 shows a schematic section of an enlarged plan view of a printed image 901 a non-inventive printed sheet-like composite 900 , The printed image 901 was by printing with the device 500 according to 5 obtained, with no charging of the sheet-like composite 200 by means of the electrode 502 took place. Thus, the printed image became 901 not by the method according to the invention 100 receive. The printed image 901 consists of printed halftone dots 801 , The printed sheet-like composite 900 consists of the following layers overlapping each other in this order: the printed image 901 ; a polymer outer layer 209 LDPE Novex ^® M19N430 Ineos Köln GmbH; a simple stroke, obtainable by brushing with a liquid formulation containing 100 Parts of pigment (Hydrocarb 60, Omya Inc, Cincinnati, US) and 20 parts of binder / SB latex (MAINCOTE ^™ HG-56; Dow; Germany); a carrier layer 203 from NaturaD UC 200mN, Stora Enso AB, Stockholm Sweden; an LDPE layer 204 LDPE Novex ^® M19N430 Ineos Köln GmbH; a barrier layer 206 made of aluminium EN AW 8079 from Hydro Aluminum Deutschland GmbH with a layer thickness of 6 μm; and a polymer inner layer 208 from a PE blend, containing 30% by weight of an mLDPE and 70% by weight of an LDPE, in each case based on the total weight of the inner polymer layer 208 , with a basis weight of 22 g / m ² . The printed image 901 is characterized by a grid with 60 dots per cm and a coverage of 30%. The printed image shown 900 is compared to the printed sheet-like composite according to the invention 400 of the 8th characterized by a significantly higher number of missing halftone dots.

10 shows a plot 1000 to print quality according to a method not according to the invention. Here, various laminates, consisting of the following layers of a layer sequence: a polymer outer layer of LDPE; a carrier layer of cardboard; a polymer intermediate layer as a laminating layer, consisting of the LDPE 23L430 from Ineos GmbH, Cologne; a barrier layer of aluminum; and a polymer inner layer printed without electrostatic support according to the invention. Here, 6 color jobs of different colors were printed in succession. Thus, a multi-colored decor was obtained. The ordinate axis 1001 shows a basis weight of the polymer outer layer in g / m ² . The abscissa axis 1002 shows a basis weight of a polymer outer layer facing top layer of the carrier layer in g / m ² . In the plot 1000 indicates the area 1003 a still acceptable print quality, the range 1004 a good print quality and the range 1005 excellent print quality. The decors, their printing qualities in the plot 1000 were each shown with a grid of 60 halftone dots 801 per cm and a coverage of 90% printed. In the plot 1000 indicates the area 1005 less than 3 missing halftone dots for each color application 902 per 100 mm ² , the area 1004 3 to 10 missing halftone dots for each color application 902 per 100 mm ² and the area 1003 more than 10 missing halftone dots for each color application 902 per 100 mm ² .

11 shows a plot 1100 to the print quality according to the method of the invention 100 , Here was on various sheet-like composites 200 consisting of the following layers of a layer sequence: a polymer outer layer 209 made of LDPE; a carrier layer 203 made of cardboard; an LDPE layer 204 as a laminating layer, consisting of the LDPE 23L430 from Ineos GmbH, Cologne; a barrier layer 206 made of aluminium; and a polymer inner layer 208 , by the method according to the invention 100 printed. Here were successively 6 paint jobs 401 printed in different colors. Thus, a multi-colored decor was obtained The ordinate axis 1001 shows a basis weight of the polymer outer layer 209 in g / m ² . The abscissa axis 1002 shows a basis weight of one of the polymer outer layers 209 facing cover layer of the carrier layer 203 in g / m ² . In the plot 1100 indicates the area 1005 less than 3 missing halftone dots for each color application 902 per 100 mm ² , the area 1004 3 to 10 missing halftone dots for each color application 902 per 100 mm ² and the area 1003 for every color application more than 10 missing grid points 902 per 100 mm ² . It is clear to see that opposite the 10 improved print quality was achieved.

LIST OF REFERENCE NUMBERS

100

inventive method

101

Process step a)

102

Process step b)

103

Process step c)

104

Process step d)

105

Process step e)

200

sheet-like composite

201

outer surface

202

inner surface

203

backing

204

LDPE-layer

205

Bonding layer

206

barrier layer

207

EAA layer

208

Polymer inner layer

209

Polymer outer layer

300

first component

301

first component surface

302

recess

303

composition

304

first direction

400

inventive printed sheet-like composite

401

inking

402

first Farbauftragtbereich

403

additional paint application area

500

inventive device

501

additional component

502

electrode

503

Direction of rotation of the additional component

504

grounding

505

feeder

506

second electrode

507

grounding

508

removal device

600

Inventive container precursor

601

folding

602

head area

603

floor area

604

creasing

605

longitudinal seam

700

inventive closed container

701

food

801

printed halftone dot

900

non-inventive printed sheet-like composite

901

not obtained according to the invention printed image

902

missing grid point

1000

Print quality plot according to a method not according to the invention

1001

Basis weight of the polymer outer layer in g / m ²

1002

Basis weight of the cover layer of the carrier layer in g / m ²

1003

still acceptable print quality

1004

good print quality

1005

excellent print quality

1100

Plot for print quality according to the method of the invention

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 90/09926 A2 [0003]

Cited non-patent literature

• EN AW 1200 [0078]
• EN AW 8079 [0078]
• EN AW 8111 [0078]
• ISO 1183-1: 2004 [0084]
• DIN 55943: 2001-10 [0104]
• "Industrial Organic Pigments, Third Edition." (Willy Herbst, Klaus Hunger Copyright © 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim ISBN: 3-527-30576-9 [0104]
• Standard ISO 1133 [0106]
• Standard ISO 1183-1 [0107]
• ISO 11357-1 [0108]
• ISO 11357-5 [0108]
• Standard ISO 307 [0109]
• Standard ISO 14663-2 [0110]
• Standard ISO 287: 2009 [0111]
• ISO 16014-3 / -5 [0113]
• "Industrial Organic Pigments, Third Edition." (Willy Herbst, Klaus Hunger Copyright © 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim ISBN: 3-527-30576-9 [0115]
• DIN EN ISO 186 [0117]
• DIN EN 20 287 [0117]
• DIN 54370 [0118]
• EN AW 8079 [0123]
• EN AW 8079 [0153]
• EN AW 8079 [0154]

Claims (17)

A procedure ( 100 ) containing as process steps ( 101 to 104 ) a) providing a sheet-like composite ( 200 ) comprising as superimposed layers of an outer surface ( 201 ) of the sheet-like composite ( 200 ) to an inner surface ( 202 ) of the sheet-like composite ( 200 ) i) a carrier layer ( 203 ), ii) a barrier layer ( 206 ), and iii) a polymer inner layer ( 208 ), wherein the sheet-like composite ( 200 ) has a first electrical charge; b) providing a first component ( 300 ), including a first component surface ( 301 ), wherein the first component surface ( 301 ) a plurality of recesses ( 302 ), wherein the recesses ( 302 ) a composition ( 303 ) containing a colorant, wherein the first component ( 300 ) in a first direction ( 304 ), the first component ( 300 ) has a second electrical charge; c) first changing the absolute value of the difference between the first electric charge and the second electric charge; d) contacting the outer surface ( 201 ) of the sheet-like composite ( 200 ) with the first component surface ( 301 ); and e) further changing the absolute value of the difference between the first electric charge and the second electric charge downstream of the process step d).  The method of claim 1, wherein the first altering and the further altering are in opposite directions. The method according to claim 1 or 2, wherein in method step a) further a further component, including a further component surface, is provided, wherein the further component surface has a multiplicity of recesses ( 302 ), wherein the recesses ( 302 ) a composition ( 303 ), containing a colorant, wherein the further component ( 300 ) in the first direction ( 304 ), the further component having a third electrical charge; the method ( 100 ) downstream of the method step e) comprises the following method steps: f) a first change of the absolute value of the difference between the first electrical charge and the third electrical charge; and g) contacting the outer surface ( 201 ) of the sheet-like composite ( 200 ) with the further component surface ( 301 ). The method of claim 3, wherein the method ( 100 ) downstream of the process step g) comprises a step h) further varying the absolute value of the difference between the first electrical charge and the third electrical charge. The procedure ( 100 ) according to one of the preceding claims, wherein the barrier layer ( 206 ) is electrically insulating. The procedure ( 100 ) according to one of the preceding claims, wherein in process step c) ( 103 ) altering by applying electrical charge carriers from an electrode ( 502 ) on the outer surface ( 201 ) of the sheet-like composite ( 200 ) he follows. The procedure ( 100 ) according to one of claims 1 to 4 or 6, wherein the barrier layer ( 206 ) is electrically conductive. The procedure ( 100 ) according to one of the preceding claims, wherein the sheet-like composite ( 200 ) is characterized by a firing residue in a range of 0.1 to 75 mg. The procedure ( 100 ) according to one of the preceding claims, wherein the sheet-like composite ( 200 ) on one of the outer surfaces ( 201 ) facing side of the carrier layer ( 203 ) a polymer outer layer ( 209 ), wherein the polymer outer layer ( 209 ) has a layer thickness in a range of 1 to 20 μm. The procedure ( 100 ) according to one of the preceding claims, wherein in process step d) the sheet-like composite ( 200 ) on the outer surface ( 201 ) with a paint application ( 401 ) is superimposed, whereby the paint application ( 401 ) is characterized by a number of missing halftone dots in a range of 0 to 100 per 100 mm ² . A printed sheet-like composite ( 400 ) obtainable by the process ( 100 ) according to one of claims 1 to 10. A device ( 500 ) comprising as device components a) a feeding device ( 505 ) arranged and formed to form a sheet-like composite ( 200 ) comprising as superimposed layers of an outer surface ( 201 ) of the sheet-like composite ( 200 ) to an inner surface ( 202 ) of the sheet-like composite ( 200 ) i) a carrier layer ( 203 ), ii) a barrier layer ( 206 ), and iii) a polymer inner layer ( 208 ) to record; b) a first electrode ( 502 ) arranged and adapted for the exchange of electrical charge carriers with the outer surface ( 201 ) of the sheet-like composite ( 200 ); c) a first component ( 300 ), including a first component surface ( 301 ), wherein the first component surface ( 301 ) a plurality of recesses ( 302 ), wherein the recesses ( 302 ) are arranged and adapted to form a composition ( 303 ) containing a colorant, wherein the first component surface ( 301 ) with the outer surface ( 201 ) of the sheet-like composite ( 200 ) is contactable; d) Downstream of the first electrode ( 502 ) and the first component ( 300 ) a second electrode ( 506 ), arranged and adapted for the exchange of electrical charge carriers with the outer surface ( 201 ) of the sheet-like composite ( 200 ). A printed sheet-like composite ( 400 comprising as superimposed layers of an outer surface ( 201 ) of the printed sheet-like composite ( 400 ) to an inner surface ( 202 ) of the printed sheet-like composite ( 400 ) i) a paint application ( 401 ), ii) a carrier layer ( 203 ), iii) a barrier layer ( 206 ), and iv) a polymer inner layer ( 208 ), wherein the printed sheet-like composite ( 400 ) is characterized by a firing residue in a range of 0.1 to 75 mg. The printed sheet-like composite ( 400 ) according to claim 13, wherein the sheet-like bond between the paint application ( 401 ) and the carrier layer ( 203 ) a polymer outer layer ( 209 ), wherein the polymer outer layer ( 209 ) is characterized by a layer thickness in a range of 1 to 20 microns. A container precursor ( 600 ) at least partially comprising the printed sheet-like composite ( 400 ) according to any one of claims 11, 13 or 14. A closed container ( 700 ) at least partially comprising the printed sheet-like composite ( 400 ) according to any one of claims 11, 13 or 14, wherein the printed sheet-like composite ( 400 ) is folded at least once. A use of the device ( 500 ) according to claim 12 for printing the sheet-like composite ( 200 ).

Images