Wrap paper having antibiotic function and manufacturing method thereof

Abstract

According to one aspect of the present invention, the paper packaging material has an antibacterial function and, more specifically, may be composed of: a paper substrate layer; an antibacterial barrier layer formed on the outer side of the paper substrate layer; a water-soluble barrier layer provided on the inner side of the paper substrate layer; and a biodegradable film layer laminated on the water-soluble barrier layer.

Description

Technology Field

[0001] The present invention relates to an antibacterial paper packaging material. Background Technology

[0002] In modern society, personal hygiene management such as hand washing, cough etiquette, disinfection, and ventilation, as well as protective measures such as wearing masks, are being emphasized.

[0003] In addition, diseases caused by various bacteria have been reported in uniforms, surgical gowns, hospital bed sheets, patient clothing and bedding used in places requiring high levels of hygiene and cleanliness, such as hospitals, as well as in bedding used at home.

[0004] Therefore, there is an urgent need to provide paper packaging with antibacterial properties for use in everyday paper packaging.

[0005] Meanwhile, it may also be necessary to provide paper packaging with such antimicrobial properties for packaging of food, agricultural and marine products, pharmaceuticals or medical devices, and electronic devices.

[0006] Accordingly, the inventor of the present invention has completed the present invention after conducting long-term research and undergoing trial and error to develop an antibacterial paper packaging material configured to prevent the contents contained in the paper packaging from becoming contaminated by coating an antibacterial barrier layer on the outer surface of the paper packaging. The problem to be solved

[0007] The present invention aims to provide an antibacterial paper packaging material capable of implementing an antibacterial function by coating an antibacterial barrier layer on the outer side of a paper substrate layer, and coating a water-soluble barrier layer and a biodegradable film layer sequentially laminated on the inner side of the paper substrate layer.

[0009] Meanwhile, other unspecified objectives of the present invention will be further considered to the extent that they can be easily inferred from the following detailed description and effects. means of solving the problem

[0010] According to one embodiment of the present invention, an antibacterial paper packaging material may be composed of: a paper substrate layer; an antibacterial barrier layer formed on the outer side of the paper substrate layer; a water-soluble barrier layer provided on the inner side of the paper substrate layer; and a biodegradable film layer laminated on the water-soluble barrier layer.

[0011] The above paper substrate layer may be Kraft paper.

[0012] The above antibacterial barrier layer can be coated by an antibacterial coating solution composed of 1 to 5 weight percent of an antibacterial agent mixed with 100 weight percent of a coating solution.

[0013] The above antimicrobial agent is an inorganic antimicrobial agent or / and an organic antimicrobial agent, and the above inorganic antimicrobial agent may include at least one selected from the zeolite series, calcium phosphate series, zirconium phosphate series, etc.

[0014] The above water-soluble barrier layer may include at least one selected from alumina (Al2O3), silica (SiOx), zirconia, polyvinylidene chloride (PVDC), polyvinyl fluoride resin and partial hydrolysate of ethylene-vinyl acetate copolymer (EVOH), SiN, ZnS-SiO2, AlN, Al2O3, composite oxide (SCZ) composed of SiO2-Cr2O3-ZrO2, composite oxide (SIZ) composed of SiO2-In2O3-ZrO2, TiO2, and Nb2O5.

[0015] The above biodegradable film layer may be any one selected from polylactic acid resin film, polybutylene adipate-co-terephthalate resin film, polycaprolactone resin film, polybutylene succinate resin film, etc. Effects of the invention

[0016] According to one aspect of the present invention, the antibacterial paper packaging can provide practical effects, such as blocking infection of the contents contained in the paper packaging by means of an antibacterial barrier layer coated on the outer side of the paper substrate layer.

[0018] Meanwhile, it should be added that even if an effect is not explicitly mentioned here, the effects described in the following specification and the provisional effects expected by the technical features of the present invention are treated as described in the specification of the present invention. Brief explanation of the drawing

[0019] FIG. 1 is a laminated diagram illustrating an antibacterial paper packaging sheet according to one embodiment of the present invention. It should be noted that the attached drawings are provided as examples for reference to help understand the technical concept of the present invention, and the scope of the rights of the present invention is not limited by them. Specific details for implementing the invention

[0020] In describing the present invention, detailed descriptions of related known functions are omitted if they are deemed obvious to a person skilled in the art and could unnecessarily obscure the essence of the invention.

[0021] The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such as "comprising" or "having" are intended to specify the presence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and should be understood as not precluding the existence or addition of one or more other features, numbers, steps, actions, components, parts, or combinations thereof.

[0022] The size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, and therefore the present invention is not necessarily limited to what is illustrated.

[0023] Hereinafter, the antibacterial paper packaging material according to the present invention will be described in detail with reference to the attached drawings. In describing with reference to the attached drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted.

[0024] FIG. 1 is a laminated structure diagram illustrating an antibacterial paper packaging sheet according to one embodiment of the present invention.

[0025] As illustrated in FIG. 1, an antibacterial paper packaging material according to one embodiment of the present invention may include a paper substrate layer (20), an antibacterial barrier layer (10) formed on the outer side of the paper substrate layer (20), a water-soluble barrier layer (30) provided on the inner side of the paper substrate layer (20), and a biodegradable film layer (40) laminated on the water-soluble barrier layer (30).

[0026] At this time, the paper substrate layer (20) of the antibacterial paper packaging according to one embodiment of the present invention may be configured to be formed of kraft paper.

[0027] The kraft paper forming the paper substrate layer (20) of the antibacterial paper packaging paper according to one embodiment of the present invention is a brown packaging paper made using unbleached kraft pulp as the main raw material, and can be used as a packaging paper or envelope that can protect the contents and further enhance the appearance due to its excellent tensile strength, tear strength, and burst strength.

[0028] The production process of kraft paper can be manufactured through a series of continuous operations in which the raw materials are dissolved in water, impurities are removed, and then dehydrated and formed into a plate.

[0029] In addition, since kraft paper is a paper with high strength and durability that is difficult to tear, it can be used for various purposes such as heavy packaging bags used for transporting heavy goods, materials for corrugated cardboard, envelopes, and adhesive tapes.

[0030] In addition, the antibacterial barrier layer (10) formed on the outer side of the paper substrate layer (20) in the antibacterial paper packaging according to one embodiment of the present invention may be prepared by coating an antibacterial coating solution composed of 1 to 5 weight percent of an antibacterial agent mixed with 100 weight percent of a coating solution.

[0031] At this time, the antimicrobial agent of the antimicrobial coating solution may be an organic antimicrobial agent (including organometallic agents) or an inorganic antimicrobial agent, and an inorganic antimicrobial agent in which Ag+TiO2 plasmon particles with a nanocore cell structure are dispersed may be used.

[0032] Organic antimicrobial agents are widely used because, although they act more like antibacterial agents than sterilizers, they can prevent the immediate proliferation of bacteria when a sterilizing surface is exposed, are relatively inexpensive, exist in liquid form, and can be applied to products that provide antimicrobial activity in a short period of time; furthermore, compared to inorganic antimicrobial agents, they are easy to process and do not significantly affect the finished product.

[0033] Furthermore, when organic antimicrobial agents are applied to other products, problems may still exist, such as poor durability, unsuitability for use in high-temperature environments, and harmfulness to the human body and the environment.

[0034] Organic antimicrobial agents primarily utilize the effect of drug release and can act in a manner closer to antibacterial action by preventing the formation of bacterial colonies rather than sterilization.

[0035] When using organic antimicrobial agents, rapid exposure to the surface of the object to be sterilized allows for immediate prevention of bacterial proliferation, and they offer the advantages of being relatively inexpensive.

[0036] On the other hand, there are disadvantages, such as the product's durability being compromised due to rapid dissolution caused by the migration of organic antimicrobial agents, the inability to apply the product in cases requiring high-temperature processing due to thermal decomposition, issues regarding harmfulness to the human body and the environment, and the fact that it cannot be used in areas where toxicity is a concern due to the fluidity and solubility of organic materials.

[0037] Furthermore, while inorganic antimicrobial agents have lower temporary antimicrobial activity compared to organic antimicrobial agents, they offer high safety for the human body, do not cause resistant bacteria, and have a relatively long duration of antimicrobial activity, allowing for almost semi-permanent use.

[0038] Existing antimicrobial materials utilizing copper, silver, etc. require at least 24 hours until 99.9% of their performance is achieved (i.e., the point at which 99.9% of bacteria or viruses are killed).

[0039] Therefore, there may be a problem in that bacteria or viruses not only continue to multiply while surviving until most of them die, but there is also a high possibility that they will constantly spread to other places through numerous contacts.

[0040] Inorganic antimicrobial agents are produced by substituting metal ions with excellent antimicrobial properties, such as silver, copper, manganese, and zinc, into inorganic binders such as zeolite, apatite, and silica alumina. They have a three-dimensional framework structure, a large specific surface area, and excellent heat resistance.

[0041] Zeolite-based inorganic antimicrobial agents have several advantages over other antimicrobial agents, such as no discoloration issues, high antimicrobial activity, and low particle hardness. However, when immersed in water, the metal ions substituted in the zeolite are leached out by the water, which not only increases the probability of contaminating the water environment with the metal ions that provide antimicrobial activity, but also, since the substitution rate of metal ions is only slightly higher than that of calcium phosphate-based inorganic antimicrobial agents, it may be difficult to evaluate them as providing superior antimicrobial activity.

[0042] Calcium phosphate-based inorganic antimicrobial agents may have lower antimicrobial activity compared to other inorganic antimicrobial agents due to the low concentration of substituted metal ions.

[0043] Although zirconium phosphate-based inorganic antimicrobial agents have higher antimicrobial activity compared to calcium phosphate-based agents, the level is insignificant and they have the problem of being expensive.

[0044] Table 1 below shows a comparison of the characteristics of organic and inorganic antimicrobial agents.

[0045] division organic antimicrobial agents Inorganic antimicrobial agents applied area Applicable mainly to liquids Applicable in most cases situation Liquid (partially solid) solid phase Human safety lowness height Immediate antibacterial effect height lowness Long-lasting antibacterial activity Temporary semi-permanent Thermal safety 200℃ or lower 500℃ or higher Antimicrobial mechanism Cell destruction by functional groups Metabolic disturbance caused by metal ions resistant bacteria Some exist doesn't exist

[0046] In addition, the water-soluble barrier layer (30) provided on the inner side of the paper substrate layer (20) forms a water-soluble coating layer, and can be configured to simultaneously satisfy water resistance, induction resistance, moisture permeability, dissociation resistance, coating properties, anti-blocking properties, and heat sealing, as well as improve oxygen permeability (OTR) and water vapor permeability (WVTR), and additionally provide an effect of improving the strength of the paper.

[0047] At this time, the water-soluble barrier layer (30) can be coated using an aqueous coating solution, and the aqueous coating solution may include an inorganic oxide comprising at least one of alumina (Al2O3), silica (SiOx), and zirconia.

[0048] In addition, the aqueous coating solution of the water-soluble barrier layer (30) may use a resin material comprising at least one of polyvinylidene chloride (PVDC), polyvinyl fluoride resin, and partial hydrolyzate of ethylene-vinyl acetate copolymer (EVOH).

[0049] In particular, the aqueous coating solution of the water-soluble barrier layer (30) may be a mixture of dielectric materials including at least one of SiN, ZnS-SiO2, AlN, Al2O3, a composite oxide (SCZ) composed of SiO2-Cr2O3-ZrO2, a composite oxide (SIZ) composed of SiO2-In2O3-ZrO2, TiO2, and Nb2O5.

[0050] Meanwhile, in an antibacterial paper packaging according to one embodiment of the present invention, the biodegradable film layer (40) laminated on the water-soluble barrier layer (30) may be provided to have excellent moisture barrier properties to prevent moisture leakage of the contents and to prevent the proliferation of mold or bacteria.

[0051] In the case of paper packaging, the degree of moisture barrier properties may vary depending on the contents. For example, if the contents are vegetables or fruits, some moisture leakage is acceptable, so the degree of moisture barrier properties may be low. However, if the contents are bread, cakes, or seaweed rolls, moisture leakage is not permitted, so the degree of moisture barrier properties must be high.

[0052] However, the biodegradable film layer (40) coated on the water-soluble barrier layer (30) can be configured to be universally usable while being mutually complementary to the water-soluble barrier layer (30) in terms of moisture barrier properties.

[0053] At this time, the biodegradable film layer (40) may be composed of any one selected from a polylactic acid resin film, a polybutylene adipate-co-terephthalate resin film, a polycaprolactone resin film, a polybutylene succinate resin film, etc.

[0054] The biodegradable film forming the biodegradable film layer (40) may refer to any one selected from polylactic acid resin film, polybutylene adipate-co-terephthalate resin film, polycaprolactone resin film, polybutylene succinate resin film, etc., and may not include additional additives (oxides, etc.) or polymers, etc. other than the film.

[0055] The biodegradable film layer (40) can be configured to significantly reduce moisture permeability by means of the water-soluble barrier layer (30), thereby greatly improving its own moisture barrier properties.

[0056] The biodegradable film layer (40) and the water-soluble barrier layer (30) are water-soluble components and may be environmentally friendly components that undergo water-soluble decomposition when landfilled.

[0057] The paper packaging according to the present invention can be used as food packaging, industrial product packaging, paper bag, paper box, corrugated cardboard, paper angle, paper pallet, paper straw, disposable paper cup, paper bag, paper tube, paper mold, etc., and preferably can be used as packaging or food packaging for transport of all foods such as gimbap, hamburgers, confectionery, bakery products, livestock products, agricultural products, and fishery products.

[0059] The claims of the present invention are not limited to the descriptions and expressions of the embodiments explicitly described above. Furthermore, it is added once again that the scope of protection of the present invention cannot be limited by obvious modifications or substitutions in the technical field to which the present invention belongs. Explanation of the symbols

[0060] 10; Antimicrobial barrier layer 20; paper substrate layer 30; water-soluble barrier layer 40: Biodegradable film layer

Claims

Claim 1 A paper substrate layer; an antibacterial barrier layer formed on the outer side of the paper substrate layer; a water-soluble barrier layer provided on the inner side of the paper substrate layer; and a biodegradable film layer laminated on the water-soluble barrier layer; The antibacterial functional paper packaging paper comprises: an antibacterial barrier layer formed by coating an antibacterial coating solution, composed of 1 to 5 weight percent of an antibacterial agent mixed with 100 weight percent of a coating solution, onto the outer side of the paper substrate layer; a water-soluble barrier layer formed by coating an aqueous coating solution onto the inner side of the paper substrate layer; and the aqueous coating solution comprising a resin material including at least one of polyvinylidene chloride (PVDC) and polyvinyl fluoride resin, and a dielectric material including at least one selected from SiN, ZnS-SiO2, AlN, a composite oxide (SCZ) composed of SiO2-Cr2O3-ZrO2, a composite oxide (SIZ) composed of SiO2-In2O3-ZrO2, and Nb2O5. Claim 2 In claim 1, the paper substrate layer is an antibacterial paper packaging paper, which is Kraft Paper. Claim 3 delete Claim 4 The antibacterial paper packaging according to claim 1, wherein the antibacterial agent is an inorganic antibacterial agent or / and an organic antibacterial agent, and the inorganic antibacterial agent comprises at least one selected from the zeolite series, calcium phosphate series, zirconium phosphate series, etc. Claim 5 delete Claim 6 In claim 1, the biodegradable film layer is an antibacterial paper packaging material selected from any one of a polylactic acid resin film, a polybutylene adipate-co-terephthalate resin film, a polycaprolactone resin film, a polybutylene succinate resin film, etc.

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