KR102159935B1 - Transparent packaging film having uv and water vapor barrier properties and a method for producing the same - Google Patents

Abstract

The present invention provides an ultraviolet and water vapor barrier transparent packaging material, a transparent polymer film layer, an adhesive layer formed on the transparent polymer film layer, an ultraviolet ray blocking coating layer including an organic-inorganic hybrid material and an ultraviolet absorber formed on the adhesive layer, the ultraviolet ray blocking It includes a printing layer formed on the coating layer and a transparent deposited polyester film layer formed on the printing layer.

Description

UV and water vapor barrier transparent packaging material and its manufacturing method {TRANSPARENT PACKAGING FILM HAVING UV AND WATER VAPOR BARRIER PROPERTIES AND A METHOD FOR PRODUCING THE SAME}

The present invention relates to a transparent packaging material having UV and water vapor barrier properties, and a method for manufacturing the same.

As the importance of health and the environment emerges, the dependence on fossil fuels is reduced and interest in the development of sustainable materials is increasing, which is affecting consumers' preferences. Accordingly, interest in functional and active packaging that extends shelf life and further improves product quality as well as the primary function of packaging for storing and transporting products is increasing, and appropriate packaging methods for this There is active research on science and technology.

Active packaging is defined as a packaging that extends shelf life through functional packaging, directly interacts with substances in the packaging, and improves product quality.Freshness-keeping packaging, selective permeable packaging, microwave-friendly packaging, high barrier packaging, and antibacterial packaging Are classified as such.

Basically important in the distribution of products from producing products to consumption by consumers begins with packaging that firstly wraps the product. In recent years, the role of packaging is not simply a means of transporting products containing products, but a marketing element that informs the product at the point of contact with consumers. Therefore, while pursuing active packaging that improves product quality, the appearance of the product is improved. Research on transparent packaging materials that can be effectively exposed is constantly being conducted.

In the research on such transparent packaging materials, due to the characteristics of transparent packaging materials, conventionally, a matte film was used or a matte coating was applied on the surface to have a function of blocking ultraviolet rays. However, in such packaging, the product was not clearly visible through the transparent window, making it difficult to inform consumers of the freshness of the product. In addition, the existing UV-blocking film has the ability to block UV rays from the product due to the transition to the product. It was difficult to use for packaging that comes in direct contact.

Conventionally, moisture barrier synthetic polymers commonly used in the packaging field include ethyl vinyl alcohol (EVOH), polyvinylidene chloride (PVDC), nylon, and polyester, and most of these materials are used in the form of thin film coatings or films. Has been.

In particular, as a method for increasing the gas barrier properties, a method of increasing the gas barrier properties while maintaining transparency by coating an inorganic material such as SiO _x N _y on a transparent polymer film with a thin thickness of 100 nm to 200 nm is well known. However, the SiO _x N _y layer blocks gas/water vapor, but is not uniform at the nano-sized level and contains fine defects. Therefore, even if the thickness of SiO _x N _y is increased, there is a problem in that gas barrier properties are not remarkably improved.

As a related prior art, Korean Patent Registration No. 10-1209293 discloses a gas barrier film containing graphene oxide in a specific content in at least one material selected from polyvinyl alcohol (PVA) and ethylene vinyl alcohol copolymer (EVOH). Are doing. However, in the case of water-based polymers such as polyvinyl alcohol in which graphene oxide is well dispersed, although gas barrier properties are improved due to the effect of reducing the diffusivity, the hydroxyl groups contained in graphene oxide and polyvinyl alcohol are close to moisture, and thus As the solubility rather increases, there is a problem in improving the water vapor barrier property.

The present invention is to solve the above-described problem, a transparent polymer film layer comprising a low-density linear polymer, an adhesive layer formed on the transparent polymer film layer, an ultraviolet ray including an organic-inorganic hybrid material and an ultraviolet absorber formed on the adhesive layer. It is to provide an ultraviolet and water vapor barrier transparent packaging material comprising a blocking coating layer, a printing layer formed on the UV blocking coating layer, and a transparent deposited polyester film layer formed on the printing layer.

More specifically, it is possible to provide a transparent packaging material capable of preventing deterioration of quality by blocking UV and water vapor by further including a natural antibacterial coating layer and a UV blocking coating layer while the contents can be viewed through the transparent polymer film.

However, the problems to be solved by the present invention are not limited to those mentioned above, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

The ultraviolet and water vapor barrier transparent packaging material according to an embodiment of the present invention includes a transparent polymer film layer, an adhesive layer formed on the transparent polymer film layer, an organic-inorganic hybrid material and an ultraviolet absorber formed on the adhesive layer. It includes a coating layer, a printing layer formed on the UV blocking coating layer, and a transparent deposited polyester film layer formed on the printing layer.

According to an embodiment of the present invention, a natural antibacterial coating layer may be further included on the transparent polymer film layer.

According to an embodiment of the present invention, the transparent polymer film layer may include a non-stretched polypropylene (CPP) film, a linear low density polyethylene (LLDPE) film, or an OPP film.

According to an embodiment of the present invention, the transparent polymer film layer may further include a biodegradation catalyst including biomass.

According to an embodiment of the present invention, the transparent polymer film layer may have a main chain of a linear polymer maintained at 100° C. to 180° C.

According to an embodiment of the present invention, the transparent polymer film layer is maintained at least 80% of the main chain of the linear polymer when microwaves are applied for 10 to 120 seconds in a microwave oven of 120 W to 1500 W. Can be.

According to an embodiment of the present invention, the thickness of the transparent polymer film layer may be 20 μm to 120 μm.

According to an embodiment of the present invention, the natural antibacterial coating layer may include chitosan and have a thickness of 5 µm to 15 µm.

According to an embodiment of the present invention, the UV blocking coating layer includes at least one selected from the group consisting of a benzotriazole compound, a benzophenone compound and a salicylic acid compound, and may have a thickness of 1 μm to 5 μm. have.

According to an embodiment of the present invention, the organic-inorganic hybrid material of the UV blocking coating layer may include a silane compound.

According to an embodiment of the present invention, the printing layer is a mixed composition adhesive comprising at least one selected from the group consisting of printing ink, urethane synthetic resin, acrylic synthetic resin, vinyl synthetic resin, and methyl ethyl ketone, ethyl acetate and toluene. It may be included.

According to an embodiment of the present invention, the transparent vapor-deposited polyester film layer may include 0.001% to 0.5% by weight of reduced graphene oxide.

According to an embodiment of the present invention, the transparent vapor-deposited polyester film layer may include SiO _x or Al ₂ O ₃ , and may further include a calcium-zinc-based organic composite stabilizer.

According to an embodiment of the present invention, the oxygen permeability of the transparent vapor-deposited polyester film layer is 0.1 cc/m ² to 0.7 cc/m ² , and the moisture permeability of the transparent vapor-deposited polyester film layer is 0.1 g/m ² to 2.0 It may be g/m ² .

According to an embodiment of the present invention, a method of manufacturing a transparent packaging material that blocks ultraviolet rays and water vapor includes applying a natural antibacterial coating material on a transparent polymer film and forming an adhesive layer, the transparent polymer film having the adhesive layer formed thereon. Applying a UV-blocking coating material to a surface to form a UV-blocking coating layer, forming a printing layer by a screen printing technique using an ink composition containing an adhesive on the transparent polymer film on which the UV-blocking coating layer is formed, and the And laminating a transparent vapor-deposited polyester film on the transparent polymer film on which the printed layer is formed.

The present invention provides a transparent polymer film layer comprising a low-density linear polymer, an adhesive layer formed on the transparent polymer film layer, a UV blocking coating layer including an organic-inorganic hybrid material and an ultraviolet absorber formed on the adhesive layer, and on the UV blocking coating layer. It is possible to provide an ultraviolet and water vapor barrier transparent packaging material including a printed layer formed on and a transparent deposited polyester film layer formed on the printed layer.

More specifically, it includes a natural antibacterial coating layer and a UV-blocking layer, and has heat resistance and microwave resistance while preventing deterioration of internal products, providing a safe packaging material even in a microwave oven without deformation of products and packaging materials. I can.

1 shows a cross-section of a film manufactured according to an embodiment of the present invention.

Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. However, since various changes may be made to the embodiments, the scope of the rights of the patent application is not limited or limited by these embodiments. It should be understood that all changes, equivalents, or substitutes to the embodiments are included in the scope of the rights.

The terms used in the examples are used for illustrative purposes only and should not be interpreted as limiting. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof, does not preclude in advance.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiment belongs. Terms as defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in this application. Does not.

In addition, in the description with reference to the accompanying drawings, the same reference numerals are assigned to the same components regardless of the reference numerals, and redundant descriptions thereof will be omitted. In describing the embodiments, when it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the embodiments, the detailed description thereof will be omitted.

When an element or layer is referred to as being “on”, “connected to”, or “coupled to” another element or layer, it is directly the other component or It may be understood that it may be in a layer, may be connected, may be combined, or intervening elements and layers may be present.

Hereinafter, with reference to Examples and the drawings for the ultraviolet and vapor barrier transparent packaging material and a manufacturing method of the present invention will be described in detail. However, the present invention is not limited to these examples and drawings.

The ultraviolet and water vapor barrier transparent packaging material according to an embodiment of the present invention includes a transparent polymer film layer, an adhesive layer formed on the transparent polymer film layer, an organic-inorganic hybrid material and an ultraviolet absorber formed on the adhesive layer. It includes a coating layer, a printing layer formed on the UV blocking coating layer, and a transparent deposited polyester film layer formed on the printing layer.

According to one side, the ultraviolet and water vapor barrier transparent packaging material is capable of checking the quality of the contents and preventing the deterioration of the quality of the contents by blocking oxygen and moisture. A transparent polymer film layer and a transparent deposited polyester film It may be a film in which a UV blocking coating layer and a printing layer are sequentially laminated between the layers.

According to one aspect, the ultraviolet and water vapor barrier transparent packaging material, as well as securing transparency, may prevent product quality deterioration due to oxygen, moisture, and ultraviolet rays during distribution.

According to one side, the ultraviolet and vapor barrier transparent packaging material may include natural materials such as food, cosmetics, and mask packs as its contents, and preferably may be food or mask pack.

According to one aspect, the UV and water vapor barrier transparent packaging material, as well as the primary function of packaging for storing and transporting products, extends shelf life, which is a storage life, and further improves product quality, and It can be an active packaging.

According to one aspect, the active packaging may be a packaging that extends shelf life through a functional packaging material, directly interacts with a material in the packaging material, and improves product quality.

According to one side, the ultraviolet and water vapor barrier transparent packaging material is an active packaging, and may have one or more properties from the group consisting of freshness maintenance packaging, selective permeability packaging, microwave-friendly packaging, high barrier packaging, and antibacterial packaging, and , Preferably, it may be one that necessarily includes the characteristics of a microwave-friendly packaging material and an antibacterial packaging material.

According to an embodiment of the present invention, a natural antibacterial coating layer may be further included on the transparent polymer film layer.

According to one aspect, the natural antibacterial coating layer serves as an antibacterial packaging material, prevents deterioration and contamination of the contents by microorganisms such as bacteria, increases the product value of the contents, and reduces economic losses to producers and distributors. The antibacterial material used as the antibacterial packaging material may be reduced, and unlike the sterilization and disinfectant used in a chemical treatment method, the antibacterial material may be limited to synthetic or natural products that are also permitted as food additives.

According to one side, the natural antibacterial coating layer is plant extract, essence oil such as linalool, thymol, enzymes such as lysozyme, chitosan, chitin, nisin, bacteriocin such as lactic acid bacteria, titanium dioxide , It may be at least one selected from the group consisting of nano-inorganic materials such as zinc oxide and hydrophobic fatty acid esters.

According to an embodiment of the present invention, the transparent polymer film layer may include a non-stretched polypropylene (CPP) film, a linear low density polyethylene (LLDPE) film, or an OPP film.

According to one side, the transparent polymer film layer may serve as a sealant film in which heat bonding is performed.

According to one side, the sealant film is a film located on the innermost layer of a packaging material for packaging the contents, and may mean a film that is sealed by heat, and compared to the existing sealant film, Sealing is possible, preferably even at 180 ℃ to 200 ℃, it may be possible to seal. Since low-temperature sealing is possible, less energy can be used compared to packaging systems requiring high temperatures.

According to an embodiment of the present invention, the transparent polymer film layer may further include a biodegradation catalyst including biomass.

According to one aspect, the transparent polymer film layer may further include a biodegradation catalyst as a biodegradable material that is decomposed into water and carbon dioxide when the film is buried or disposed.

According to one side, the biomass is derived from a plant, and the biodegradation catalyst may be 25 to 30 parts by weight based on 100 parts by weight of the total composition of the transparent polymer film layer, including biomass within the numerical range. When a biodegradation catalyst is included, it has the effect of suppressing carbon emission, and it can be an eco-friendly material because it is biodegraded by microorganisms after disposal.

According to one aspect, the transparent polymer film further comprising a biodegradation catalyst including biomass may have superior tensile strength and elongation compared to a conventional polymer film.

According to one aspect, the biomass may be preferably a carbon neutral type plant biomass, and the biodegradation catalyst may exhibit a biodegradation of 60% or more compared to a cellulose film, which is a natural film.

According to an embodiment of the present invention, the transparent polymer film layer may have a main chain of a linear polymer maintained at 100° C. to 180° C.

According to one side, the main chain of the linear polymer is maintained without being broken at the temperature, and thus, may have microwave resistance. Within the above temperature range, since the main chain of the transparent polymer film layer is not deformed, physical properties such as heat resistance, tensile strength, impact strength, rupture strength, and sealability can be maintained. In the case of a general microwave oven, the temperature can be increased from 120° C. to 150° C., and the packaging film including the transparent polymer film layer maintains physical properties even when acting in a microwave oven, thereby adding only a sense of heat to the contents. , There may be no modification of the packaging material and contents.

According to one side, in order to measure the temperature change during microwave heating of the packaging film including the transparent polymer film layer, a probe of an optical fiber thermometer is plugged into the center, edge and level line of the standing packaging and outputs 1,350 W. It can be heated for 2 minutes in a rotary microwave oven with.

According to one side, the transparent polymer film layer may preferably be a non-stretched polypropylene (CPP) film, and the temperature can be instantaneously increased to a maximum of 180 °C when performing a microwave oven, and thus a maximum of 150 °C to 160 °C As a conventional CPP material having a degree of heat resistance, it may be difficult to suppress thermal deformation, and may be a CPP film in which heat resistance is secured through modification or improvement of the surface layer.

According to one side, the CPP film, which has heat resistance stability through modification or improvement of the surface layer, may preferably have a small amount of titanium dioxide (TiO ₂ ) added, and according to the addition of titanium dioxide, microwave heating The temperature difference between the surface temperature of the packaging material, which can be felt by hand, may not be felt significantly, and the heat resistance is increased so that the thermal deformability is low, and even if it is attached to the inner surface of the packaging material, the contents are less dried and overheating caused by electromagnetic waves can be reduced.

According to an embodiment of the present invention, the thickness of the transparent polymer film layer may be 20 μm to 120 μm.

According to one side, when the thickness of the transparent polymer film layer is less than 20 μm, production is very difficult, and when the thickness of the transparent polymer film layer is more than 120 μm, it may be preferable to use a material within the above range because there is a limit in consumer handling, and preferably 70 μm May not exceed.

According to an embodiment of the present invention, the transparent polymer film layer is maintained at least 80% of the main chain of the linear polymer when microwaves are applied for 10 to 120 seconds in a microwave oven of 120 W to 1500 W. Can be.

According to one aspect, the main chain of the linear polymer is maintained without breaking 80% or more under the above conditions, thereby having microwave resistance. Under the above conditions, most of the main chains of the transparent polymer film layer are not deformed, so that physical properties such as heat resistance, tensile strength, impact strength, rupture strength, and sealability can be maintained.

According to one aspect, if the main chain of the linear polymer is deformed by more than 20% when microwaves in the above numerical range are applied, the transparent polymer material may be melted or deformed to affect the internal contents.

According to an embodiment of the present invention, the natural antibacterial coating layer may include chitosan and have a thickness of 5 µm to 15 µm.

According to one aspect, the chitosan of the natural antibacterial coating layer may include a material synthesized by a silver nano synthesis method through green synthesis. Here, the green synthesis method may be defined as a synthesis method that actively excludes the use of environmentally hazardous chemicals and utilizes natural substances derived from nature as a synthesis method caused by green chemistry. In general, in the synthesis of nanomaterials, silver nano can be synthesized by using polysaccharides, honey, seaweed, herb leaf extract, chitosan, etc., which have eco-friendliness, cost efficiency, and biocompatibility, as reducing agents and stabilizers.

According to one side, chitin, which is a precursor of chitosan, can be obtained from the shells of crustaceans such as crab, crayfish, and shrimp, and is the second most abundant natural polymer after cellulose, and a hydroxyl group at the C2 position of cellulose (-OH ) Is substituted with -CH ₃ CONH, and is an insoluble substance with a structure very similar to cellulose.

According to one aspect, chitosan obtained through the deacetylation of -CH ₃ CONH of chitin is a natural polymer known to be excellent in biodegradability and biocompatibility and non-toxic to the human body. It can be excellent.

According to one aspect, chitosan also has abundant active amino groups and hydroxyl groups, and since the number of active amino groups depends on the degree of deacetylation of chitin, more than 70% deacetylated chitosan can be used for stable synthesis.

According to one aspect, the chitosan used in the natural antibacterial coating layer, preferably, comprises a chitosan-silver nanocomposite obtained through the green synthesis of silver nano-s using the active amino group and hydroxy group of chitosan, an eco-friendly natural polymer. It can be.

According to one aspect, the natural antibacterial coating layer within the above numerical range may be one that exhibits a sufficient natural antibacterial effect while keeping the entire thickness of the packaging film thin.

According to an embodiment of the present invention, the UV blocking coating layer includes at least one selected from the group consisting of a benzotriazole compound, a benzophenone compound and a salicylic acid compound, and may have a thickness of 1 μm to 5 μm. have.

According to one aspect, the UV blocking coating layer is uniformly dispersed a component (ultraviolet absorber) having a UV blocking function including at least one selected from the group consisting of a benzotriazole compound, a benzophenone compound, and a salicylic acid compound. It may mean a coated layer, and may be positioned between the transparent polymer film layer and the printing layer.

According to one side, since the UV blocking coating layer is located between the transparent polymer film layer and the printing layer, the quality of printing of the printing layer is constant and defects such as bubbles can be minimized, and the UV blocking effect is sufficiently provided for the contents. Can be done.

According to one side, when the UV blocking coating layer is less than 1 μm, there is a limit to the UV blocking effect, and when it exceeds 5 μm, there may be limitations in workability and printing conditions during production.

According to an embodiment of the present invention, the organic-inorganic hybrid material of the UV blocking coating layer may include a silane compound.

According to one aspect, the organic-inorganic hybrid material is a part of the basic constituent material of a coating solution that makes a UV/infrared blocking functional coating film, and the organic-inorganic hybrid is a composite with an organic polymer (Polyorganosilane) based on an inorganic oxide part Can mean material.

According to one side, the organic-inorganic hybrid material is divided into types 1 to 3 according to the complex form, and type 1 is the hydrolysis of metal alkoxide (M(OR) ₄ , where M = metal, OR = alkyl group) Particulate dyes, etc. are dispersed in a ceramic base material formed by condensation polymerization, type 2 may be a form in which polymer fibers without a binding functional group are simply dispersed in a ceramic base material, and type 3 is an inorganic oxide ceramic. The part may be chemically bonded through a chemical reaction such as hydrolysis or condensation polymerization between the part and the organosilane part, which is a polyorganosilane.

According to one aspect, the dispersed phase (dye, polymer) of the organic-inorganic hybrid material is not chemically bonded at the interface of the ceramic part, so to maintain dispersion, for compatibility with the ceramic part, etc. It is necessary to modify, and as a surface modifier, preferably, a silane-based compound, more preferably, a low-molecular silane-based compound, is methyl trimethoxy silane, methyl triethoxy silane, and phenyl trimethoxy. It may contain one or more selected from the group consisting of oxy silane (Phenyl Trimethoxy Silane) and vinyl trimethoxy silane (Vinyl Trimethoxy Silane).

According to one aspect, the UV blocking coating layer including the organic-inorganic hybrid material may further include a binder such as acrylic emulsion silicone, and a dispersion solvent.

According to an embodiment of the present invention, the printing layer is a mixed composition adhesive comprising at least one selected from the group consisting of printing ink, urethane synthetic resin, acrylic synthetic resin, vinyl synthetic resin, and methyl ethyl ketone, ethyl acetate and toluene. It may be included.

According to one side, the printing layer is a printing layer for printing other indications such as ingredients and effects of contents on a part of the transparent polymer film layer, and the ink used for the printing layer is a general ink, a glass ink, or 2 It may be any one of liquid ink, and in particular, glass ink plays a role of enhancing adhesion with inorganic materials by using inorganic compounds, and two-component ink contains a curing agent, so it is a transparent material (transparent polymer film layer or transparent deposited polyester It is possible to impart stability to ink printed on the surface of the film layer).

According to one side, the ink used to print the surface of the transparent material in the printing layer may be a mixture of an ink and an adhesive.

According to one aspect, the adhesive preferably includes a vinyl-based synthetic resin as a main component, and may include MEK (methyl ethyl ketone), acetone, and toluene as auxiliary components.

According to one side, when printing the surface of a transparent material using an ink further containing the mixed composition adhesive, the stability of the ink on the surface of the transparent material is increased to prevent problems such as ink bleeding. , Can improve the print quality of transparent materials.

According to one aspect, the stability of the ink may mean a property that allows the ink to adhere to the surface of a transparent material.

According to an embodiment of the present invention, the transparent vapor-deposited polyester film layer may include 0.001% to 0.5% by weight of reduced graphene oxide.

According to one side, the transparent vapor-deposited polyester (PET) film refers to a PET film on which SiOx or Al ₂ O ₃ is deposited, and may serve as a barrier layer against oxygen and moisture.

According to one side, the thickness of the transparent evaporated polyester film layer may be 12 ㎛ to 30 ㎛, preferably 12 ㎛.

According to one side, when the thickness of the transparent vapor-deposited polyester film layer is less than 12 µm, domestic production may be difficult and there may be a problem in supply and demand, and when it exceeds 30 µm, there may be a limit of the use of the surface film. .

According to one side, the graphene oxide may include reduced graphene oxide and nano graphite oxide, respectively or as a mixture.

According to one side, the graphene oxide is produced as a result of partial oxidation of graphite, and when several layers of graphite oxide are completely separated and one layer is 10 nm or less, it is called graphene oxide, and the thickness of the separated layer When is from 10 nm to 100 nm, it can be referred to as nano graphite oxide.

According to one side, when graphene oxide and nano graphite oxide are respectively used or mixed in the transparent vapor-deposited polyester film layer, the gas as the graphene oxide and nano graphite oxide are evenly dispersed in the transparent vapor-deposited polyester film layer. The path through which molecules are diffused is formed serpentinely, resulting in an increase in the diffusion distance, which has the same effect as increasing the thickness of the film, and thus the degree of diffusivity may decrease. Therefore, the transmittance of the gas and water vapor passing through the film is expressed as a product of the diffusivity and the solubility, and as a result, the transmittance of the gas and water vapor of the composite film may be significantly reduced.

According to one side, the content of graphene oxide to be added may preferably include 0.001% by weight to 0.5% by weight, and when the content of graphene oxide is less than 0.001% by weight, it is not possible to sufficiently secure water vapor barrier properties. Therefore, it is not preferable, and if it exceeds 0.5% by weight, since the transmittance of light in the film is lowered, it may not be preferable.

According to one side, even when all of the graphene oxide and nano graphite oxide are mixed or at least one of them is selectively used, the total addition content may be preferably 0.001% by weight to 0.5% by weight.

According to an embodiment of the present invention, the transparent vapor-deposited polyester film layer may include SiO _x or Al ₂ O ₃ , and may further include a calcium-zinc-based organic composite stabilizer.

According to one side, the SiO _x is, as an inorganic material, SiO _x N _y (however, x, y is an integer of 1≤x≤2, 1≤y≤) is preferably, more preferably SiON You may want to use it.

According to one side, the aluminum oxide (Al ₂ O ₃ ) may form a thin thin film on the transparent vapor-deposited polyester film, and simultaneously improve adhesion and gas barrier properties of the laminated interface.

According to one side, the transparent vapor deposition polyester film layer, most preferably, a binary deposition method of adding Al ₂ O ₃ to SiO ₂ can be performed, in this case, excellent gas barrier properties and at the same time obtain a transparent film. In addition, the interatomic network becomes dense and the flexibility can be increased.

According to one side, the calcium-zinc-based organic composite stabilizer may be a stabilizer that improves heat resistance, and preferably 2 to 5 parts by weight based on 100 parts by weight of the total composition constituting the transparent evaporated polyester film layer. .

According to an embodiment of the present invention, the oxygen permeability of the transparent vapor-deposited polyester film layer is 0.1 cc/m ² to 0.7 cc/m ² , and the moisture permeability of the transparent vapor-deposited polyester film layer is 0.1 g/m ² to 2.0 It may be g/m ² .

According to an embodiment of the present invention, a method of manufacturing a transparent packaging material that blocks ultraviolet rays and water vapor includes applying a natural antibacterial coating material on a transparent polymer film and forming an adhesive layer, the transparent polymer film having the adhesive layer formed thereon. Applying a UV-blocking coating material to a surface to form a UV-blocking coating layer, forming a printing layer by a screen printing technique using an ink composition containing an adhesive on the transparent polymer film on which the UV-blocking coating layer is formed, and the And laminating a transparent vapor-deposited polyester film on the transparent polymer film on which the printed layer is formed.

According to one side, the lamination method between the respective layers may be performed by a dry or wet lamination method, and preferably may be performed by a dry lamination method.

According to one side, the screen printing technique can freely print a desired character or pattern pattern on the surface of a transparent packaging material layer or a transparent evaporated polyester film layer, which is a transparent material, and various types such as tempered glass, acrylic or plastic Various and precise printing can be possible on the surface of a transparent material.

Hereinafter, the present invention will be described in more detail by examples and comparative examples.

However, the following examples are for illustrative purposes only, and the contents of the present invention are not limited to the following examples.

Example. Transparent packaging film

As a material for the transparent polymer film layer, a CPP film (brand name: ULF, manufacturer name: oil phase) was prepared, and a coating layer composition containing chitosan, biomass, and a biodegradation catalyst synthesized by silver nano synthesis through green synthesis Was applied by mixing.

Transparently deposited polyester (PET) film was prepared as a PET film (brand name: GL-PET12, manufacturer: TOPPAN) in which a binary deposition method was performed in which Al ₂ O ₃ was added to SiO ₂ .

After coating a UV coating agent containing a benzotriazole-based compound (brand name: UV Block Coat, manufacturer name: CN Chemical) on a transparent polymer film coated with a coating layer composition containing chitosan, biomass, and biodegradation catalyst, the back side is printed and printed. A layer was formed.

At this time, in order to form a printing layer, a vinyl-based synthetic resin and at least one adhesive selected from the group consisting of methyl ethyl ketone, acetone, and toluene were mixed and prepared in glass ink, and the prepared mixed ink composition was printed by a screen printing technique.

Next, the prepared transparent vapor-deposited PET film was dry-laminated to laminate the laminated film to prepare a transparent packaging film.

The transparent packaging film according to the above-described embodiment, when measuring the oxygen permeability and moisture permeability according to ASTM regulations through OX 2/21 of MOCON and W 3/31 of MOCON, oxygen permeability of 0.05 cc/m 2 ·day And moisture permeability of 0.28 g/m 2 ·day, it was confirmed that the material exhibited good barrier properties.

In addition, it was confirmed that various letters and patterns can be printed as desired on the surface of the transparent material, and when the UV blocking rate was measured through the SPECORD210 measuring machine, it has a blocking rate of at least 94% at 360 nm to 380 nm, so it has excellent blocking properties. It was confirmed to have.

And, in order to measure the temperature change during heating, when the probe of an optical fiber thermometer is plugged into the center, edge and level line of the standing packaging and heated for 2 minutes in a rotary microwave oven with 1,350 W output, the thermal deformation of the packaging material is reduced. It was confirmed that there was no.

When the stability of the packaging material further including a biodegradation catalyst was evaluated in accordance with the standards and standards for food code No. 7. Equipment and container packaging, in the material test, detection of Pb, Cd, Hg, Cr ⁶⁺ silver measuring equipment It was found to be less than the limit of 10 mg kg ^-1 , and it was found to be suitable for the standard of less than 100 as a total. As a result of the dissolution test, it was found that the consumption of heavy metals, potassium permanganate and the total dissolution amount were appropriate to the standard. When the organic carbon content test analysis was conducted by requesting the BETA laboratory using the ASTM D6866 test method, the organic carbon content was found to be 35% suitable.

For the biodegradability evaluation, a 45-day biodegradability test was performed according to the ASTM D6954-04 method, and the average biodegradability calculated by the amount of carbon dioxide emission of the transparent film prepared according to an example of the present invention was 46.7%. Cellulose, a control, was found to be 76.1%. In particular, it was confirmed that the biodegradability of the transparent film manufactured by this study from the 16th day is almost constant. It showed 61.4% biodegradability compared to the standard material.

The above description of the present invention is for illustrative purposes only, and those of ordinary skill in the art to which the present invention pertains will be able to understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as being distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims to be described later, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

Claims (13)

A transparent polymer film layer;
An adhesive layer formed on the transparent polymer film layer;
A UV blocking coating layer formed on the adhesive layer and comprising an organic-inorganic hybrid material and a UV absorber;
A printing layer formed on the UV blocking coating layer; And
A transparent vapor-deposited polyester film layer formed on the printing layer;
Including,
The transparent polymer film layer,
At 100° C. to 180° C., the main chain of the linear polymer is maintained, or
In a microwave oven of 120 W to 1500 W, 80% or more of the main chain of the linear polymer is maintained when microwaves are applied for 10 to 120 seconds, or
The printing layer,
Including a mixed composition adhesive comprising at least one selected from the group consisting of printing ink, urethane-based synthetic resin, acrylic synthetic resin, vinyl-based synthetic resin and methyl ethyl ketone, ethyl acetate and toluene,
UV and vapor barrier transparent packaging. The method of claim 1,
To further comprising a natural antibacterial coating layer on the transparent polymer film layer,
UV and vapor barrier transparent packaging. The method of claim 1,
The transparent polymer film layer,
Including a non-stretched polypropylene (CPP) film, a low density linear polyethylene (LLDPE) film or an OPP film,
UV and vapor barrier transparent packaging. The method of claim 1,
The transparent polymer film layer,
It further comprises a biodegradation catalyst comprising biomass,
UV and vapor barrier transparent packaging. delete delete The method of claim 1,
The thickness of the transparent polymer film layer,
Which is from 20 μm to 120 μm,
UV and vapor barrier transparent packaging. The method of claim 2.
The natural antibacterial coating layer,
Contains chitosan,
Which has a thickness of 5 μm to 15 μm,
UV and vapor barrier transparent packaging. The method of claim 1,
The UV blocking coating layer,
It contains at least one selected from the group consisting of benzotriazole-based compounds, benzophenone-based compounds, and salicylic acid-based compounds,
Having a thickness of 1 μm to 5 μm,
UV and vapor barrier transparent packaging. The method of claim 1,
The organic-inorganic hybrid material of the UV blocking coating layer,
Containing a silane compound,
UV and vapor barrier transparent packaging. delete The method of claim 1,
The oxygen permeability of the transparent evaporated polyester film layer is 0.1 cc/m ² to 0.7 cc/m ² ,
The moisture permeability of the transparent vapor-deposited polyester film layer is 0.1 g/m ² to 2.0 g/m ² ,
UV and vapor barrier transparent packaging. Applying a natural antibacterial coating material on the transparent polymer film and forming an adhesive layer;
Forming a UV-blocking coating layer by applying a UV-blocking coating material to the surface of the transparent polymer film on which the adhesive layer is formed;
Forming a printing layer on the transparent polymer film on which the UV-blocking coating layer is formed by using an ink composition containing an adhesive by a screen printing technique; And
Laminating a transparent deposited polyester film on the transparent polymer film on which the printing layer is formed;
Containing,
The manufacturing method of the ultraviolet and vapor barrier transparent packaging material of claim 1.

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