Metallized paper multilayer packaging material

Abstract

A metallized paper-based multilayer packaging material comprising, from the outside to the inside, an outer polymer layer (1), a paper layer (2), an adhesive layer (3), a metallized layer (4), a polymer film (5), and (6) an inner polymer layer; a method for producing the metallized paper-based multilayer packaging material.

Description

[Technical Field]

[0001] This invention relates to a paper-based packaging material that has high barrier properties against moisture and oxygen and is recyclable in a paper recycling stream. [Background technology]

[0002] Plastic packaging is widely used in economic activities and people's daily lives. It offers several advantages, including flexibility and light weight. This lightness contributes, for example, to fuel savings and CO2 reduction during transportation. The barrier properties of plastic packaging have a positive effect on extending shelf life, thus helping to reduce food waste. These barrier properties also help ensure food safety.

[0003] However, according to the European Strategy on Plastics in the Circular Economy, recently published by the European Commission, approximately 25.8 million tons of plastic waste are generated in Europe every year, less than 30% of which is recovered for recycling, and 150,000 to 500,000 tons of plastic waste end up in the oceans each year.

[0004] Significant efforts are being made in industry and commerce to ensure the reduction of plastic waste. Some supermarkets, for example, are replacing plastic bags with paper bags. However, replacing plastic with paper in food packaging is not an easy task. Changes to packaging materials must not compromise consumer safety. Packaging must not only protect food, but also be strong enough to withstand machine handling during the manufacturing process, and allow food products to be effectively presented and protected.

[0005] Therefore, paper-based materials with improved barrier properties are needed. In particular, paper-based materials with improved barrier properties that minimize plastic content and maximize paper content are needed to enable easier sorting and separation of paper-based materials during recycling. International Publication No. 2000 / 076862(A9) describes in this regard a laminated structure for packaging applications comprising a paper substrate and at least one polymer / nanoclay composite layer having a thickness in the range of 0.7 to 9 nm and containing clay particles, applied to the paper substrate by an extrusion or lamination process. Similarly, International Publication Nos. 2000 / 077300(A1) and International Publication No. 1996 / 013380(A1) disclose multilayer packaging materials in which a thick plastic layer is extruded, co-extruded, or laminated against a cellulose layer. International Publication No. 2022 / 238280(A1) discloses a barrier multilayer packaging material structure recyclable in a paper recycling process, the structure being metallized for high moisture barrier and further including additional layers for excellent oxygen barrier and heat sealability.

[0006] However, in this technical field, there is a need to further improve the barrier properties and recyclability of paper-based packaging materials. In particular, there is a need to provide paper-based packaging materials that have a high paper fiber content, very few or no through-holes or cracks in any layer, especially the metallized layer, have high WVTR and OTR, and can be easily manufactured according to scale.

[0007] [Overview of the prefecture] The object of the present invention is to improve the current state of the art, and in particular to provide a multilayer packaging material that provides improved barrier properties and is recyclable, to provide the use of such multilayer packaging material for packaging dry or liquid food products, or at least to provide a useful alternative to existing packaging solutions in the art.

[0008] Therefore, the object of the present invention is achieved by the subject matter of the independent claim. The dependent claims further develop the concept of the present invention.

[0009] The present inventors propose to solve the above problem by providing a metallized paper-based multilayer packaging material comprising, from the outside to the inside, an outer polymer layer, a paper layer, an adhesive layer, a metallized layer, a polymer film, and an inner polymer layer.

[0010] The present invention further provides a method for producing a metallized paper-based multilayer packaging material, comprising the steps of: preparing a paper layer having an adhesive layer on a second surface; preparing a polymer film having a metallized layer on a first surface and an inner polymer layer on a second surface; and attaching the metallized layer to the adhesive layer.

[0011] The present invention further provides a method for manufacturing a metallized paper-based multilayer packaging material, comprising the steps of: preparing a paper layer having an adhesive layer on a second surface; preparing a polymer film having a metallized layer on a first surface; attaching the metallized layer to the adhesive layer; applying an outer polymer layer to the first surface of the paper layer; and applying an inner polymer layer to the second surface of the polymer film.

[0012] The present invention further provides the use of multilayer packaging materials according to the present invention for packaging dry or liquid foods, and food packaging including metallized paper-based multilayer packaging materials according to the present invention. [Brief explanation of the drawing]

[0013] Additional features and advantages of the present invention are described below with reference to the drawings in the description of preferred embodiments of the present invention, and will become apparent therefrom. [Figure 1] This is a schematic diagram of the metallized paper-based multilayer packaging material according to the present invention. [Modes for carrying out the invention]

[0014] definition As used herein, the terms "comprising," "including," and similar terms are not to be construed in an exclusive or exhaustive sense. In other words, they are intended to mean "including but not limited to."

[0015] In this specification, the "optical density" (or "equivalent optical density") of a material is defined as the amount of light reflected from the material, using a reflectance densitometer. The optical density is measured by any internationally recognized standard method (e.g., EN ISO 5-2:2009).

[0016] In this specification, the "Bekk" smoothness of a material refers to the smoothness of the paper surface, which is evaluated by measuring the leakage of air applied at a specified pressure between a smooth glass surface and the surface of the paper sample. The time (seconds) for a fixed volume of air to leak between the above surfaces gives the "Bekk" smoothness value. The Bekk smoothness is measured by any internationally recognized standard method (e.g., EN ISO 5627).

[0017] "Three-dimensional forming" generally means the application of a process for forming a material into a three-dimensional article. The three-dimensional forming process can include, for example, deep drawing or thermoforming.

[0018] In this application, the "deep drawing" process is a process in which a material is formed within a die by applying a deformation pressure inside the die so that the material takes the shape of the die. During forming in the deep drawing process, the material can be deformed and / or stretched.

[0019] The hot processing of a material refers to the application of heat to the material to enable it to be deformed and processed into a predetermined article, or to change its mechanical properties. For example, the material can be heated at least in part thereof to seal the material into another article or to seal itself (e.g., to close a sachet made from the material). In another example, heat is applied to the material, for example, to improve its mechanical resistance to mechanical stress.

[0020] Metallized paper-based multilayer packaging material The present invention relates to a metallized paper-based multilayer packaging material 0 of the type shown in FIG. 1, which comprises, from the outside to the inside, an outer polymer layer 1, a paper layer 2, an adhesive layer 3, a metallized layer 4, a polymer film 5, and an inner polymer layer 6. The present invention relates to a metallized paper-based multilayer packaging material provided with the above layers.

[0021] In a preferred embodiment of the present invention, the packaging material described in the embodiment is used for packaging edible products. The edible products to be packaged may be food or beverage products for human or animal consumption in the form of liquids, pastes, gels, granules, powders, or solids.

[0022] For the purposes of the present invention, the term "paper-based" is meant to mean that the packaging material may contain at least 50 wt%, at least 60 wt%, at least 70 wt%, at least 80 wt%, at least 90 wt%, at least 95 wt%, or at least 99 wt% paper. In a preferred embodiment, the packaging material contains at least 70 wt%, preferably from about 75 wt% to about 85 wt% paper.

[0023] The metallized paper-based multilayer packaging material according to the present invention requires packaging forming ability to be processed into a completely formed, filled, and closed package. In a preferred embodiment, the packaging material is designed to be formed into a package by a folding-gluing process. Such a folding-gluing process enables the formation of three-dimensional objects (such as boxes and cartons). This process typically includes folding the packaging material along pre-scored lines and applying an adhesive to hold the product in its shape. This process requires the packaging material to be foldable. Alternatively, the material may be designed to be formed into a package by using, for example, a thermoforming process. Such a thermoforming process enables the formation of three-dimensional objects (such as bottles, cartons, trays, cups, bowls, coffee capsules or pods, etc.), and requires the use of heat to form a material that is initially flat into a three-dimensional shape within a shaped mold. This process requires applying pressure in addition to heat for a few seconds.

[0024] The metallized paper-based multilayer packaging material according to the present invention preferably has an oxygen transmission rate (OTR) of 30 cm 3 / m 2 / day or less, more preferably 10 cm 3 / m 2 / day or less, preferably less than 5 cm 3 / m 2 / day or less, more preferably 2.5 cm 3 / day / m 2 or less, more preferably 2 cm 3 / day / m 2 or less, most preferably 1 cm 3 / m 2 / day or less when measured at 23 °C, relative humidity (RH) 50%, and oxygen concentration 20.95%.

[0025] The metallized paper-based multilayer packaging material according to the present invention has a water vapor transmission rate (WVTR) of 1.5 g / day / m 2 or less, preferably 1 g / day / m 2More preferably, 0.8 g / day / m 2 Below, the most preferred value is 0.5 g / day / m². 2 The following water vapor transmission rates (WVTR) may also be present.

[0026] The paper-based barrier heat-resistant packaging material of the present invention is recyclable, for example, by paper and carton streams. This is due to the fact that the polymer and metal coating can be easily separated from the pulp fibers in a recycling process suitable for recycling paper or other cellulose materials (e.g., cardboard).

[0027] Outer polymer layer In some embodiments, the outer polymer layer comprises a polymer selected from the group consisting of ethylene acrylic acid and / or methacrylic acid copolymer, propylene acrylic acid copolymer, polyester, polyolefin, polyvinylidene chloride (PVDC), polybutylene succinate, thermoplastic starch, or combinations thereof. In preferred embodiments, the outer polymer layer comprises a polymer selected from the group consisting of polyethylene and polypropylene, or combinations thereof. In particularly preferred embodiments, the outer polymer layer comprises polyethylene.

[0028] In some embodiments, the outer polymer layer is applied by a polymer dispersion coating process, a polymer extrusion coating process, or a polymer lamination coating process. In a particularly preferred embodiment, the outer polymer layer is applied by a polymer dispersion coating process.

[0029] In some embodiments, the outer polymer layer has a basis weight in the range of about 1 to about 20 gsm. In some embodiments, the outer polymer layer has a basis weight in the range of about 1 to about 10 gsm, preferably about 5 gsm. In other embodiments, the outer polymer layer has a basis weight in the range of about 10 to about 20 gsm, preferably about 15 gsm.

[0030] In a particularly preferred embodiment, the outer polymer layer has a basis weight in the range of about 1 to about 10 gsm, preferably about 5 gsm, and is applied by a polymer dispersion coating process. In another particularly preferred embodiment, the outer polymer layer has a basis weight in the range of about 10 to about 20 gsm, preferably about 15 gsm, and is applied by a polymer extrusion coating process.

[0031] paper layer In particular, suitable paper in terms of thickness, as well as mechanical and chemical stability, is typically selected based on the type of product being packaged, the intended shelf life, and whether the paper material is used as primary packaging (i.e., in direct contact with the product), secondary packaging, or tertiary packaging.

[0032] The paper layer may have a basis weight in the range of approximately 40 gsm to 380 gsm. In a preferred embodiment, the paper layer may have a basis weight in the range of approximately 100 gsm to approximately 300 gsm, preferably approximately 160 gsm to approximately 240 gsm, and more preferably approximately 180 gsm to approximately 230 gsm.

[0033] In a particularly preferred embodiment, the paper layer is approximately 180-230 gsm of liquid packaging board grade.

[0034] adhesive layer In preferred embodiments, the adhesive layer comprises a polymer selected from the group consisting of a latex / casein blend, starch, sugar derivatives, cellulose, amino resin, (poly)acrylate, modified polyvinyl alcohol (PVOH), polyvinyl alcohol (PVOH), modified ethylene vinyl alcohol (EVOH), ethylene vinyl alcohol (EVOH), polyvinyl acetate, polyacrylic acid, maleic acid-modified ethylene copolymer, methylcellulose, carboxymethylcellulose, carboxy-functional polyester, polyethylene succinate, polybutylene succinate, ionomer, or hydrophilic polyurethane, or a combination thereof. In particularly preferred embodiments, the adhesive layer comprises modified polyvinyl alcohol (PVOH), polyvinyl alcohol (PVOH), modified ethylene vinyl alcohol (EVOH), ethylene vinyl alcohol (EVOH), or a combination thereof.

[0035] In some embodiments, the adhesive layer may have a basis weight in the range of about 1 gsm to about 10 gsm. In preferred embodiments, the adhesive layer has a basis weight in the range of about 1 gsm to about 5 gsm, preferably about 2 gsm to about 3 gsm.

[0036] In addition to providing adhesion between the paper layer and the metallized layer, the adhesive layer also provides an oxygen barrier.

[0037] metallization layer In the metallized paper-based multilayer packaging material of the present invention, the metallized layer typically has a thickness in the range of about 1 nm to about 500 nm, preferably 20 to 400 nm, or more preferably 20 to 300 nm. The metallized layer may have a thickness in the range of about 2 nm to about 200 nm, about 6 nm to about 80 nm, or about 20 nm to about 50 nm.

[0038] It is preferable to maximize the equivalent optical density of the metallized layer. In preferred embodiments, the metallized layer preferably has an equivalent optical density in the range of about 1, about 2, about 3, or about 4. Typically, the metallized layer has an equivalent optical density of about 1 to about 5, about 2 to about 5, about 1.2 to about 3.9, or about 1.4 to about 3.5.

[0039] The metallized layer may comprise any one selected from the group consisting of aluminum, aluminum oxide (AlOx, more precisely AlO3), silicon oxide (SiOx), or a combination thereof. In a preferred embodiment, the metallized layer is an aluminum layer.

[0040] In general, in this specification, a “metallized” (or “metal”) layer means a layer formed from a metal, or more broadly, from a metalloid. Metalloids (such as SiOx or AlOx as described above) are very similar to metals, but have some properties that differ from metals, and are not actually considered nonmetallic elements. In this specification, terms such as “metallized,” “pre-metallization,” and “post-metallization” refer to metallization itself, but more broadly, also refer to metalloidization. The aluminum layer may be applied to the packaging material by chemical deposition or physical vacuum deposition. For example, the aluminum layer may be applied by certain means. An example of a vacuum deposition process is described in Thin Solid Films, Vol. 666, November 30, 2018, pp. 6-14. Vacuum deposition is an evaporation process in which aluminum transitions from a solid phase to a gas phase and then back to a solid phase, gradually building up a film thickness. Coatings produced by vacuum deposition offer advantages such as good abrasion resistance, impact strength, and temperature resistance, as well as the ability to be deposited on complex surfaces. The optical density of the aluminum layer may range from 1.4 to 3.8, which corresponds to a thickness of 30 to 200 nanometers.

[0041] The thickness of the metallized layer can be appropriately adjusted, for example, depending on the intended shelf life, the total thickness of the packaged product, and the packaging material.

[0042] During recycling, the metallized layer separates from the rest of the packaging material due to its extreme thinness. Typically, aluminum separates from the rest of the packaging material during recycling in a hydra pulper. One important advantage of the present invention is that excellent liquid and gas barrier properties are achieved by combining an ultrathin metal layer that provides a barrier against gases with an ultrathin layer of HDPE dispersion coating that provides a barrier against liquids, even in the absence of extruded or laminated polyolefin layers, such as a PE or PP layer.

[0043] polymer film In some embodiments, the polymer film is very thin. For example, the polymer film may have a basis weight in the range of about 1 gsm to about 20 gsm, preferably in the range of about 5 gsm to about 15 gsm, and most preferably about 8 gsm. The polymer film may have a thickness of about 2 μm to about 20 μm, preferably about 3 μm to about 12 μm, and more preferably about 4 μm to about 8 μm.

[0044] The polymer film may include any one selected from the group consisting of polyolefins (e.g., PP or PE), polyesters (e.g., PET), biaxially oriented polyamides or polylactic acid, or combinations thereof.

[0045] The polymer film may include uniaxially or biaxially oriented films. For example, the polymer film may include any one selected from the group consisting of uniaxially oriented polypropylene (MOPP), biaxially oriented polypropylene (BOPP), biaxially oriented polyester (BOPET), uniaxially oriented polyethylene (MDOPE), biaxially oriented polyamide (BOPA), or biaxially oriented polylactic acid (BOPLA), or combinations thereof. In a preferred embodiment, the polymer film includes any one selected from the group consisting of uniaxially oriented polypropylene (MOPP) and biaxially oriented polypropylene (BOPP), or combinations thereof.

[0046] Inner polymer layer In some embodiments, the inner polymer layer comprises a polymer selected from the group consisting of ethylene acrylic acid and / or methacrylic acid copolymer, propylene acrylic acid copolymer, polyester, polyolefin, polyvinylidene chloride (PVDC), polybutylene succinate, thermoplastic starch, or a combination thereof. In preferred embodiments, the inner polymer layer comprises a polymer selected from the group consisting of polyethylene and polypropylene, or a combination thereof. In particularly preferred embodiments, the inner polymer layer comprises polyethylene.

[0047] In some embodiments, the inner polymer layer is applied by a polymer dispersion coating process, a polymer extrusion coating process, or a polymer lamination coating process. In a particularly preferred embodiment, the inner polymer layer is applied by a polymer dispersion coating process.

[0048] In some embodiments, the inner polymer layer has a basis weight in the range of about 1 to about 25 gsm. In some embodiments, the inner polymer layer has a basis weight in the range of about 1 to about 10 gsm, preferably about 5 gsm. In other embodiments, the inner polymer layer has a basis weight in the range of about 10 to about 20 gsm, preferably about 15 gsm.

[0049] In a particularly preferred embodiment, the inner polymer layer has a basis weight in the range of about 10 to about 25 gsm, preferably about 15 gsm, and is applied by a polymer extrusion coating process.

[0050] method The present invention relates to a method for producing a metallized paper-based multilayer packaging material, wherein the metallized paper-based multilayer packaging material is processed from the outside to the inside. The outer polymer layer, paper layer, Adhesive layer, Metallized layer, Polymer film and The inner polymer layer, The present invention provides a method that includes the step of preparing [something].

[0051] The order in which the layers are deposited may vary depending on the specific manufacturing process used.

[0052] For example, in one embodiment, the process includes the steps of: preparing a paper layer having an adhesive layer on a second surface; preparing a polymer film having a metallized layer on a first surface; attaching the metallized layer to the adhesive layer of the paper layer having an adhesive layer on a second surface; preparing a polymer film having a metallized layer on a first surface; and attaching the metallized layer to the adhesive layer. The outer polymer layer may be added to the first surface of the paper layer before or after attaching the metallized layer to the adhesive layer. The inner polymer layer may be added to the second surface of the polymer film before or after attaching the metallized layer to the adhesive layer.

[0053] In another embodiment, the process includes the steps of: preparing a paper layer having a metallized layer on a first surface and an adhesive layer on a second surface; providing a polymer film; and attaching the polymer layer to the metallized layer. The outer polymer layer may be added to the first surface of the paper layer before or after attaching the metallized layer to the adhesive layer. The inner polymer layer may be added to the second surface of the polymer film before or after attaching the metallized layer to the adhesive layer.

[0054] Each layer in the process may have any of the characteristics of that layer as defined herein.

[0055] Example 1 A metallized paper-based multilayer packaging material is proposed in accordance with the above principle of the present invention. In Example 1, the metallized paper-based multilayer packaging material is arranged from the outside to the inside. An outer polymer layer having a basis weight of approximately 5 gsm, containing polyethylene deposited by a dispersion coating process, A paper layer having a basis weight of 200 gsm, An adhesive oxygen barrier layer having a basis weight of approximately 2 to approximately 3 gsm, comprising ethylene vinyl alcohol, propylene vinyl alcohol, or a blend thereof, A metallized layer having a thickness of approximately 50 nm, containing vacuum-deposited aluminum, A polymer film containing biaxially oriented polypropylene having a basis weight of approximately 8 gsm, An inner polymer layer having a basis weight of approximately 15 gsm, containing polyethylene deposited by an extrusion coating process, It is equipped with.

[0056] The above material is manufactured as a flat blank sheet and then subjected to a conventional heat sealing process by pressing its edges together between a pair of sealing jaws. The temperature of the sealing jaws is set to 180°C, and a sealing pressure of 900N is applied to the material for 5 seconds.

[0057] The metallized paper-based multilayer packaging material according to Example 1 is proposed to have an 80% paper fiber content, no through-holes or cracks in any layer, especially the metallized layer, and high WVTR and OTR. The metallized paper-based multilayer packaging material of Example 1 can be manufactured on a large scale with little difficulty.

[0058] Example 2 The metallized paper-based multilayer packaging material of Example 2 is manufactured in the same manner as in Example 1, except that the outer polymer layer has a basis weight of approximately 15 gsm and contains polyethylene deposited by an extrusion coating process.

[0059] Example 3 The metallized paper-based multilayer packaging material of Example 3 is manufactured in the same manner as in Example 1, except that the polymer film contains uniaxially oriented polypropylene having a basis weight of approximately 8 gsm.

[0060] Those skilled in the art will understand that all features of the present invention disclosed herein can be freely combined. In particular, features described for the products of the present invention may be combined with uses of the present invention, and vice versa. Furthermore, features described for different embodiments of the present invention may be combined.

[0061] Although the present invention has been explained using examples, it should be understood that modifications and alterations can be made without departing from the scope of the present invention as defined in the claims.

[0062] Furthermore, where known equivalents exist for a particular feature, such equivalents are incorporated as specifically referred to herein. Further advantages and features of the present invention are evident from the drawings and non-limiting embodiments.

[0063] Embodiment Various preferred features and embodiments of the present invention are described below with reference to the numbered paragraphs.

[0064] 1. A metallized paper-based multilayer packaging material, wherein the outer layer is laid out inwards. The outer polymer layer, paper layer, Adhesive layer, Metallized layer, Polymer film and The inner polymer layer, A metallized paper-based multilayer packaging material that possesses the following features. 2. The metallized paper-based multilayer packaging material according to paragraph 1, wherein the outer polymer layer contains a heat-sealable polymer. 3. The metallized paper-based multilayer packaging material according to either paragraph 1 or 2, wherein the outer polymer layer comprises a polymer selected from the group consisting of ethylene acrylic acid and / or methacrylic acid copolymer, propylene acrylic acid copolymer, polyester, polyolefin, polyvinylidene chloride (PVDC), polybutylene succinate, thermoplastic starch, or a combination thereof. 4. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 3, wherein the outer polymer layer comprises a polymer selected from the group consisting of polyethylene and polypropylene, or a combination thereof. 5. A metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 4, wherein the outer polymer layer contains polyethylene. 6. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 5, wherein the outer polymer layer comprises polyethylene coated by a polymer extrusion coating process. 7. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 5, wherein the outer polymer layer is applied by a polymer dispersion coating process. 8. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 5, wherein the outer polymer layer is applied by a polymer lamination coating process. 9. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 8, wherein the outer polymer layer has a basis weight in the range of about 1 to about 20 gsm. 10. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 9, wherein the outer polymer layer has a basis weight in the range of about 1 to about 10 gsm, preferably about 5 gsm. 11. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 9, wherein the outer polymer layer has a basis weight in the range of about 10 to about 20 gsm, preferably about 15 gsm. 12. A metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 11, wherein the paper layer has a basis weight in the range of approximately 40 gsm to approximately 380 gsm. 13. A metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 12, wherein the paper layer has a basis weight in the range of approximately 100 gsm to approximately 300 gsm. 14. A metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 13, wherein the paper layer has a basis weight in the range of approximately 160 gsm to approximately 240 gsm. 15. A metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 14, wherein the paper layer has a basis weight in the range of approximately 180 gsm to approximately 230 gsm. 16. A metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 15, wherein the adhesive layer comprises a polymer selected from the group consisting of latex / casein blend, starch, sugar derivative, cellulose, amino resin, (poly)acrylate, polyvinyl alcohol (PVOH), ethylene vinyl alcohol (EVOH), polyvinyl acetate, polyacrylic acid, maleic acid-modified ethylene copolymer, methylcellulose, carboxymethylcellulose, carboxy-functional polyester, polyethylene succinate, polybutylene succinate, ionomer, or hydrophilic polyurethane, or a combination thereof. 17. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 16, wherein the adhesive layer comprises modified polyvinyl alcohol (PVOH), polyvinyl alcohol (PVOH), modified ethylene vinyl alcohol (EVOH), ethylene vinyl alcohol (EVOH), or a combination thereof. 18. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 16, wherein the adhesive layer has a basis weight in the range of about 1 gsm to about 5 gsm. 19. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 18, wherein the adhesive layer has a basis weight in the range of about 2 gsm to about 3 gsm. 20. A metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 19, wherein the metallized layer comprises one selected from the group consisting of aluminum, aluminum oxide (AlOx), silicon oxide (SiOx), or a combination thereof. 21. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 20, wherein the metallized layer is obtained by transfer deposition or vacuum deposition. 22. A metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 21, wherein the metallized layer has a thickness in the range of about 1 nm to about 500 nm. 23. A metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 22, wherein the metallized layer has a thickness in the range of about 2 nm to about 200 nm. 24. A metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 23, wherein the metallized layer has a thickness in the range of about 6 nm to about 80 nm. 25. A metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 24, wherein the metallized layer has a thickness in the range of about 20 nm to about 50 nm. 26. A metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 25, wherein the metallized layer has an optical density in the range of about 2 to about 5. 27. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 26, wherein the polymer film includes a stretched film. 28. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 27, wherein the polymer film comprises one selected from the group consisting of stretched polypropylene (OPP), stretched polyester (OPET), stretched polyethylene (OPE), stretched polyamide (OPA), or stretched polylactic acid (OPLA), or a combination thereof. 29. A metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 28, wherein the polymer film comprises one selected from the group consisting of uniaxially oriented polypropylene (MOPP), biaxially oriented polypropylene (BOPP), biaxially oriented polyester (BOPET), uniaxially oriented polyethylene (MDOPE), biaxially oriented polyamide (BOPA), or biaxially oriented polylactic acid (BOPLA), or a combination thereof. 30. A metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 29, wherein the polymer film comprises one selected from the group consisting of uniaxially oriented polypropylene (MOPP) and biaxially oriented polypropylene (BOPP), or a combination thereof. 31. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 30, wherein the polymer film has a basis weight in the range of about 1 gsm to about 20 gsm. 32. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 31, wherein the polymer film has a basis weight in the range of about 5 gsm to about 15 gsm. 33. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 32, wherein the polymer film has a basis weight of approximately 8 gsm. 34. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 33, wherein the inner polymer layer comprises a heat-sealable polymer. 35. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 34, wherein the inner polymer layer comprises a polymer selected from the group consisting of ethylene acrylic acid and / or methacrylic acid copolymer, propylene acrylic acid copolymer, polyester, polyolefin, polyvinylidene chloride (PVDC), polybutylene succinate, thermoplastic starch, or a combination thereof. 36. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 35, wherein the inner polymer layer comprises a polymer selected from the group consisting of polyethylene and polypropylene, or a combination thereof. 37. A metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 36, wherein the inner polymer layer contains polyethylene. 38. A metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 37, wherein the inner polymer layer comprises polyethylene coated by a polymer extrusion coating process. 39. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 38, wherein the inner polymer layer is coated by a polymer dispersion coating process. 40. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 39, wherein the inner polymer layer is coated by a polymer dispersion coating process. 41. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 40, wherein the inner polymer layer has a basis weight in the range of about 1 to about 25 gsm. 42. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 41, wherein the inner polymer layer has a basis weight in the range of about 1 to about 10 gsm, preferably about 5 gsm. 43. The metallized paper-based multilayer packaging material according to any one of paragraphs 1 to 42, wherein the inner polymer layer has a basis weight in the range of about 10 to about 25 gsm, preferably about 15 gsm. 44. The oxygen barrier transmittance (OTR) was 10 cm when measured at 23°C, 50% relative humidity, and 20.95% oxygen concentration. 3 / m 2 A metallized paper-based multilayer packaging material described in any one of paragraphs 1 to 43, which is less than / day. 45. The oxygen barrier transmittance (OTR) is measured at 23°C, 50% relative humidity, and 20.95% oxygen concentration, with a limit of 1 cm². 3 / m 2 A metallized paper-based multilayer packaging material described in any one of paragraphs 1 to 44, which is less than / day. 46. ​​The moisture barrier transitivity (WVTR) was 1.5 g / m² when measured at 38°C and 90% relative humidity. 2 A metallized paper-based multilayer packaging material described in any one of paragraphs 1 to 45, which is less than / day. 47. The moisture barrier transitivity (WVTR) was 0.5 g / m² when measured at 38°C and 90% relative humidity. 2 A metallized paper-based multilayer packaging material described in any one of paragraphs 1 to 45, which is less than / day. 48. A method for manufacturing a metallized paper-based multilayer packaging material, A step of preparing a paper layer having an adhesive layer on a second surface, A step of preparing a polymer film having a metallized layer on a first surface, The process of attaching the metallized layer to the adhesive layer, Methods that include... 49. A method for producing a metallized paper-based multilayer packaging material according to paragraph 48, comprising coating an outer polymer layer onto a first surface of a paper layer. 50. A method for producing a metallized paper-based multilayer packaging material according to paragraph 49, wherein the outer polymer layer is applied to the first surface of the paper layer before the metallized layer is attached to the adhesive layer. 51. A method for producing a metallized paper-based multilayer packaging material according to paragraph 49, wherein the metallized layer is attached to the adhesive layer, and then the outer polymer layer is applied to the first surface of the paper layer. 52. A method for producing a metallized paper-based multilayer packaging material according to any one of paragraphs 48 to 51, comprising the step of applying an inner polymer layer to the second surface of the polymer film. 53. A method for producing a metallized paper-based multilayer packaging material according to paragraph 52, wherein the inner polymer layer is applied to the second surface of the polymer film before the metallized layer is attached to the adhesive layer. 54. A method for producing a metallized paper-based multilayer packaging material according to paragraph 52, wherein the metallized layer is attached to the adhesive layer, and then the inner polymer layer is applied to the second surface of the polymer film. 55. The aforementioned metallized paper-based multilayer packaging material is one of those described in any one of paragraphs 1 to 47; and / or The outer polymer layer is one of those described in any one of paragraphs 1 to 47; and / or The aforementioned paper layer is one described in any one of paragraphs 1 to 47; and / or The adhesive layer is one described in any one of paragraphs 1 to 47; and / or The metallized layer is one of those described in any one of paragraphs 1 to 47; and / or The polymer film is one described in any one of paragraphs 1 to 47; and / or The inner polymer layer is one of those described in any one of paragraphs 1 to 47. A method for producing a metallized paper-based multilayer packaging material as described in any one of paragraphs 48 to 54.

Claims

1. A metallized paper-based multilayer packaging material, wherein the outer layer is laid out inwards. The outer polymer layer, paper layer, Adhesive layer, Metallized layer, Polymer film and The inner polymer layer, A metallized paper-based multilayer packaging material that possesses the following features.

2. The metallized paper-based multilayer packaging material according to claim 1, wherein the outer polymer layer has a basis weight in the range of about 10 gsm to about 20 gsm and contains polyethylene coated by polymer extrusion coating technology.

3. The metallized paper-based multilayer packaging material according to claim 1, wherein the outer polymer layer has a basis weight in the range of about 1 gsm to about 10 gsm and contains polyethylene coated by polymer dispersion coating technology.

4. The metallized paper-based multilayer packaging material according to any one of claims 1 to 3, wherein the paper layer has a basis weight in the range of about 160 gsm to about 260 gsm, preferably in the range of about 180 gsm to about 200 gsm.

5. The metallized paper-based multilayer packaging material according to any one of claims 1 to 4, wherein the adhesive layer has a basis weight in the range of about 1 gsm to about 5 gsm, preferably in the range of about 2 gsm to about 3 gsm, and comprises modified polyvinyl alcohol (PVOH), polyvinyl alcohol (PVOH), modified ethylene vinyl alcohol (EVOH), ethylene vinyl alcohol (EVOH), or a combination thereof.

6. The metallized paper-based multilayer packaging material according to any one of claims 1 to 5, wherein the metallized layer comprises one selected from the group consisting of aluminum, aluminum oxide (AlOx), silicon oxide (SiOx), or a combination thereof, and the metallized layer has a thickness in the range of about 6 nm to about 300 nm.

7. The metallized paper-based multilayer packaging material according to any one of claims 1 to 6, wherein the polymer film has a basis weight in the range of about 5 gsm to about 15 gsm, preferably about 8 gsm, and comprises stretched polypropylene, for example, uniaxially oriented polypropylene (MOPP) and biaxially oriented polypropylene (BOPP), or a combination thereof.

8. The metallized paper-based multilayer packaging material according to any one of claims 1 to 7, wherein the inner polymer layer comprises polyethylene coated by a polymer extrusion coating process, having a basis weight in the range of about 10 to about 25 gsm, preferably about 15 gsm.

9. The oxygen barrier transmittance (OTR) was measured at 23°C, 50% relative humidity, and 20.95% oxygen concentration, with a limit of 1 cm². ３ / m ２ A metallized paper-based multilayer packaging material according to any one of claims 1 to 8, wherein the amount is less than one day.

10. The moisture barrier transmittance (WVTR) was 0.5 g / m² when measured at 38°C and 90% relative humidity. ２ A metallized paper-based multilayer packaging material according to any one of claims 1 to 9, wherein the amount is less than one day.

11. A method for manufacturing a metallized paper-based multilayer packaging material, A step of preparing a paper layer having an adhesive layer on a second surface, A step of preparing a polymer film having a metallized layer on a first surface and an inner polymer layer on a second surface, The process of attaching the metallized layer to the adhesive layer, Methods that include...

12. A method for manufacturing a metallized paper-based multilayer packaging material, A step of preparing a paper layer having an adhesive layer on a second surface, A step of preparing a polymer film having a metallized layer on a first surface, The process of attaching the metallized layer to the adhesive layer, A step of attaching the outer polymer layer to the first surface of the paper layer, A method comprising the step of applying an inner polymer layer to the second surface of the polymer film.

13. The metallized paper-based multilayer packaging material is one of the claims described in any one of claims 1 to 10; and / or The outer polymer layer is one of the claims described in any one of claims 1 to 10; and / or The paper layer is one of the claims described in any one of claims 1 to 10; and / or The adhesive layer is one of the claims described in any one of claims 1 to 10; and / or The metallized layer is one of the claims described in any one of claims 1 to 10; and / or The polymer film is one of the claims described in any one of claims 1 to 10; and / or The inner polymer layer is one of the claims described in any one of claims 1 to 10. A method for producing a metallized paper-based multilayer packaging material according to claim 11 or 12.

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