KR20210158308A - Method of manufacturing antimicrobial film for card and the film thereof - Google Patents

Abstract

The present invention discloses a method for manufacturing an antibacterial film for card lamination and a film thereof. The method for manufacturing the antibacterial film for card lamination according to the present invention includes following steps: (S1) preparing a surface-modified silica mixed solution; (S2) manufacturing antibacterial silica obtained by coating the silica of the mixed solution with silver particles; and (S3) extruding and molding a plastic resin mixed with the antibacterial silica, wherein a silane coupling agent is used in the surface modification in order to increase the reactivity on the surface or pores of the silica, thereby having effects of exhibiting antibacterial activity while maintaining the transparency of the film and minimizing the harmfulness to the human body and the environment.

Description

Method of manufacturing antimicrobial film for card and the film thereof

The present invention relates to a method for manufacturing an antibacterial film for card lamination and a film thereof, and more particularly, to a method for manufacturing an antibacterial film for card lamination that maintains the transparency of the film and exhibits antibacterial activity, and minimizes harmfulness to the human body and environment and to the film.

Since 2000, due to the outbreak of viral infectious diseases around the world such as SARS (Severe Acute Respiratory Syndrome), swine flu, and COVID-19, much attention has been paid to hygiene management to prevent bacterial and viral infections. In media outlets such as TV, credit cards are reported as a carrier of viruses and bacteria. Since we use the card more than once a day in our daily life, the card acts as a medium for transferring bacteria and can be the cause of transferring bacteria and viruses to many people in a short time.

Accordingly, many antibacterial products are being manufactured to improve the unsanitary environment caused by bacteria. However, chemical substances such as ethyl alcohol and chlorine dioxide are used as general antibacterial agents, and these chemicals have a lot of problems in antibacterial durability due to bad odor, safety and volatility. In addition, since these synthetic chemicals are used only to prepare aerosols and sprays by dissolving or dispersing them in organic solvents, respiratory problems may occur.

As an alternative to this, inorganic antibacterial products using inorganic substances with antibacterial and deodorizing properties are being manufactured. Examples of such inorganic antibacterial products include a type in which a metal having an antibacterial function is dispersed in a solvent, and a type of product used after bonding the metal to a porous support.

Various technologies have been proposed to impart antibacterial properties to credit cards and films. Korean Patent Registration No. 10-0357845 relates to a method for manufacturing a biodegradable film composed of a complex of chitosan and starch. Dispersing in an aqueous solution to prepare a starch dispersion, dissolving chitosan and polyalcohol (PVA) in an aqueous acetic acid solution, mixing the chitosan, polyvinyl alcohol solution, and the starch dispersion to form a film on a glass plate have. However, due to the content of chitosan added to obtain antibacterial activity, the transparency of the film is lowered, the thickness is not uniform, and there are problems that mass production is difficult.

Republic of Korea Patent No. 10-1417767 relates to a film for packaging food containing chitosan and an inorganic antibacterial agent and a method for manufacturing the same. First, chitosan powder and titanium dioxide (TiO ₂ ) nanoparticles are mixed with polybutene to prepare an additive raw material, It is a method of producing a final film by mixing additive raw materials with synthetic resin raw materials to produce a primary film, re-finely slicing, and then mixing with synthetic resin raw materials with micro-fragments. The antibacterial activity of titanium dioxide is very good, but the antibacterial activity is weak due to the low content of chitosan powder, and when titanium dioxide nanoparticles are absorbed into the human body and reach the brain through the blood, problems such as destroying nerve cells may occur.

In addition, Republic of Korea Patent No. 10-0537450 discloses a method for manufacturing an antibacterial plastic card, which is a method of coating silver nanoparticles on the surface of a synthetic resin. Since they are not emitted outside, inorganic nanoparticles are already classified as hazardous substances in the United States and Europe, which can be a big problem for the human body and the environment.

Therefore, the first technical problem to be solved by the present invention is to provide a method of manufacturing an antibacterial film for card lamination that maintains the transparency of the film and exhibits antibacterial activity, and minimizes the harmfulness to the human body and the environment.

The second technical problem to be solved by the present invention is to provide an antibacterial film for card lamination that exhibits antibacterial activity while maintaining the transparency of the film, and minimizes harmfulness to the human body and the environment.

In order to solve the first technical problem described above, the present invention mixes the S1 step of preparing a surface-modified silica mixed solution, the S2 step of preparing the antibacterial silica coated with silver particles on the silica of the mixed solution, and the antibacterial silica It provides a method of manufacturing an antibacterial film for card lamination, comprising the step S3 of extruding and molding a plastic resin, wherein the surface modification uses a silane coupling agent to increase reactivity to the surface or pores of silica.

According to another embodiment of the present invention, the silica may have an average particle size of 5 to 20 μm.

According to another embodiment of the present invention, the silane coupling agent is bis(3-triethoxysilylpropyl)tetrasulfide, bis(2-triethoxysilylethyl)tetrasulfide, bis(4-triethoxysilylbutyl) Tetrasulfide, bis(3-trimethoxysilylpropyl)tetrasulfide, bis(2-trimethoxysilylethyl)tetrasulfide, bis(4-trimethoxysilylbutyl)tetrasulfide, bis(3-triethoxysilyl) Propyl)trisulfide, bis(2-triethoxysilylethyl)trisulfide, bis(4-triethoxysilylbutyl)trisulfide, bis(3-trimethoxysilylpropyl)trisulfide, bis(2-trime Toxysilylethyl)trisulfide, bis(4-trimethoxysilylbutyl)trisulfide, bis(3-triethoxysilylpropyl)disulfide, bis(2-triethoxysilylethyl)disulfide, bis(4-trie Toxysilylbutyl)disulfide, bis(3-trimethoxysilylpropyl)disulfide, bis(2-trimethoxysilylethyl)disulfide, bis(4-trimethoxysilylbutyl)disulfide, 3-trimethoxysilylpropyl- N,N-dimethylthiocarbamoyltetrasulfide, 3-triethoxysilylpropyl-N,N-dimethylthiocarbamoyltetrasulfide, 2-triethoxysilylethyl-N,N-dimethylthiocarbamoyltetrasulfide, 2 -Trimethoxysilylethyl-N,N-dimethylthiocarbamoyltetrasulfide, 3-trimethoxysilylpropylbenzothiazolyltetrasulfide, 3-triethoxysilylpropylbenzothiazoletetrasulfide, 3-trimethoxysilyl It may be at least one selected from the group consisting of propyl methacrylate monosulfide and 3-trimethoxysilyl propyl methacrylate monosulfide.

According to another embodiment of the present invention, the mixed solution may further include a solvent or a binder.

According to another embodiment of the present invention, the solvent is methanol, ethanol, propanol, butanol, hexanol, cyclohexanol, diacetone alcohol, ethylene glycol, diethylene glycol, glycerin, diethyl ether, ethylene glycol monomethyl ether, Ethylene glycol monoethyl ether, ethylene glycol modobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, propylene glycol monomethyl ether, acetone, methyl ethyl ketone, acetyl acetone, methyl isobutyl ketone, cyclohexanone , acetoacetic acid ester, methyl acetate, ethyl acetate, may be at least one selected from the group consisting of n-propyl acetate and i-butyl acetate.

According to another embodiment of the present invention, the binder may be silicon oxide or titanium oxide.

According to another embodiment of the present invention, the silver particle coating may be one in which silver ions in the solution are reduced and adsorbed to the silica surface or pores.

According to another embodiment of the present invention, the binder may be crystallized by high pressure and high heat.

On the other hand, the present invention provides an antibacterial film for card lamination, characterized in that it is prepared by the present manufacturing method above in order to solve the second technical problem described above.

According to another embodiment of the present invention, the film may have 2 to 10% by weight of antibacterial silica.

According to the method for manufacturing an antibacterial film for card lamination and the film according to the present invention, while maintaining the transparency of the film, it exhibits antibacterial activity, and has an effect of minimizing the harmfulness to the human body and the environment.

1 is an exploded perspective view of a card using a film according to the present invention;
2 is a photograph taken to show the transparency of the films prepared in Examples 1 to 2 and Comparative Examples;
3 is a test report of the antibacterial activity test (ASTM E2149-13a) against Staphylococcus aureus and Escherichia coli of the film prepared in Example 1;
4 is a test report of the antibacterial activity test (JIS Z 2801: 2010, adhesion film method) against methicillin-resistant Staphylococcus aureus of the film prepared in Example 1,
5 is a test report of the antibacterial activity test (JIS Z 2801: 2010, adhesive film method) against Klebsiella pneumoniae of the film prepared in Example 2.

Hereinafter, the present invention will be described in more detail.

Hereinafter, examples will be given to help the understanding of the present invention be described in detail. However, the following examples are merely illustrative of the content of the present invention, and the scope of the present invention is not limited to the following examples.

The embodiments of the present invention are provided to more completely explain the present invention to those of ordinary skill in the art.

In addition, although the present invention will describe specific parts in detail, for those of ordinary skill in the art, it will be clear that these specific descriptions are only preferred embodiments, and the scope of the present invention is not limited thereby. , it will be said that the substantial scope of the present invention is defined by the appended claims and their equivalents.

1 is an exploded perspective view of a card in which a film according to the present invention is used, FIG. 2 is a photograph taken to show the transparency of the films prepared in Examples 1 to 2 and Comparative Examples, and FIG. 3 is an Example Staphylococcus aureus, Escherichia coli of the film prepared in 1 is a test report of the test (ASTM E2149-13a), Figure 4 is the methicillin-resistant Staphylococcus aureus test of the film prepared in Example 1 (JIS Z 2801) : 2010, adhesion film method) test report, Figure 5 is a test report of antibacterial activity against Klebsiella pneumoniae of the film prepared in Example 2 (JIS Z 2801: 2010, adhesion film method) test report, refer to this.

The manufacturing method of the antibacterial film for card lamination according to the present invention comprises the step S1 of preparing a surface-modified silica mixed solution, the step S2 of preparing the antibacterial silica coated with silver particles on the silica of the mixed solution, and the antibacterial silica is mixed Including the step S3 of extruding and molding a plastic resin, the surface modification is characterized by using a silane coupling agent to increase the reactivity to the surface or pores of the silica.

The silica used in the present invention is characterized in that the average particle size of the silica is 5 to 20 μm in order to prevent adverse effects on the human body. If it exceeds ㎛, it is easy to discharge, but the haze may change and adversely affect transparency.

Such silica may preferably have a spherical shape because it is advantageous to have a large surface area due to a large number of pores in which various shapes such as a plate-like or spherical shape can exist.

First, looking at step S1 of preparing the surface-modified silica mixed solution, the surface modification is performed in advance in order to efficiently perform the adsorption and reduction reaction of silver (Ag) particles on the surface or pores of the silica. can be used

The silane coupling agent may be used without limitation as long as it is intended to improve the reactivity by modifying the silica surface or porosity. For example, bis(3-triethoxysilylpropyl)tetrasulfide, bis(2-trie Toxysilylethyl)tetrasulfide, bis(4-triethoxysilylbutyl)tetrasulfide, bis(3-trimethoxysilylpropyl)tetrasulfide, bis(2-trimethoxysilylethyl)tetrasulfide, bis(4- Trimethoxysilylbutyl)tetrasulfide, bis(3-triethoxysilylpropyl)trisulfide, bis(2-triethoxysilylethyl)trisulfide, bis(4-triethoxysilylbutyl)trisulfide, bis( 3-trimethoxysilylpropyl)trisulfide, bis(2-trimethoxysilylethyl)trisulfide, bis(4-trimethoxysilylbutyl)trisulfide, bis(3-triethoxysilylpropyl)disulfide, bis (2-triethoxysilylethyl)disulfide, bis(4-triethoxysilylbutyl)disulfide, bis(3-trimethoxysilylpropyl)disulfide, bis(2-trimethoxysilylethyl)disulfide, bis(4 -trimethoxysilylbutyl)disulfide, 3-trimethoxysilylpropyl-N,N-dimethylthiocarbamoyltetrasulfide, 3-triethoxysilylpropyl-N,N-dimethylthiocarbamoyltetrasulfide, 2-tri Ethoxysilylethyl-N,N-dimethylthiocarbamoyltetrasulfide, 2-trimethoxysilylethyl-N,N-dimethylthiocarbamoyltetrasulfide, 3-trimethoxysilylpropylbenzothiazolyltetrasulfide, 3- It may be at least one selected from the group consisting of triethoxysilylpropylbenzothiazoletetrasulfide, 3-trimethoxysilylpropylmethacrylate monosulfide, and 3-trimethoxysilylpropylmethacrylate monosulfide.

In addition, the solvent for uniformly mixing the surface-modified silica is not limited as long as the silica can be uniformly mixed as an organic solvent, and it can be selectively mixed depending on whether the environment for the reduction reaction of silver ions in the post-process is acidic. For example, alcohols such as methanol, ethanol, propanol, butanol, hexanol, cyclohexanol, diacetone alcohol, ethylene glycol, diethylene glycol, glycerin and diethyl ether, ethylene glycol monomethyl ether, ethylene glycol Monoethyl ether, ethylene glycol modobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, propylene glycol monomethyl ether, acetone, methyl ethyl ketone, acetyl acetone, methyl isobutyl ketone, cyclohexanone, aceto It may be at least one selected from the group consisting of acetate ester, methyl acetate, ethyl acetate, n-propyl acetate, and i-butyl acetate.

In addition, the solvent may be mixed with a binder, and the binder serves to bind the metal silver so that it can be firmly attached to the pores during the reduction reaction of ^{silver ions (Ag + ) on the surface or pores of the silica in the mixed solution.} As a result, silicon oxide or titanium oxide can be used, and since it is preferable to be provided in a form combined with an organic material that can be mixed in an organic solvent, silicate for silicon oxide and titanate for titanium oxide can be used.

Since the titanate has no solvent reactivity or requires low properties, tetraisopropyl di (dioctyl phosphate) titanate, isopropyl dioleyl (dioctyl phosphate) titanate, isopropyl tri (dioctyl phosphate) titanate, Isopropyl trioleyl titanate, isopropyl tristearyl titanate, isopropyl tri(dodecylbenzenesulfonate) titanate, isopropyl tri(dioctylpyrophosphate) titanate and di(dioctylpyrophosphate) ethylene titanate At least one selected from the group consisting of nates may be used.

Next, looking at step S2 of manufacturing the antibacterial silica in which the silver particles are coated on the silica of the mixed solution, the silver particles in the solution phase are ^{reduced by silver ions (Ag +} ) and adsorbed to the silica to exhibit antibacterial properties.

The source of the silver ions may be silver nitrate (AgNO ₃ ), and the reducing agent for the reduction reaction is not limited as long as it can reduce silver ions to silver, but hydrazine monohydride (N ₂ H _{4 )} ·H ₂ O)), sodium borohydride (NaBH ₄ )), formaldehyde (HCOH), ascorbic acid (L(+)-asocorbic acid (C ₆ H ₈ O ₆ )) may be used.

That is, an aqueous silver nitrate solution is added to the surface-modified silica mixed solution and stirred, and the stirring may be performed until the reduction reaction is completed in order to improve the reduction reaction efficiency.

After the mixed solution and the silver nitrate aqueous solution are stirred for a certain period of time, a reducing agent is slowly added, and silver can be adsorbed to the silica through a reduction reaction.

Here, in order to increase the adhesion of the reduced silver, the binder such as silicate or titanate may be stirred together, and the binder is later crystallized at high pressure and high temperature, and thus has resistance to oxidation reaction or yellowing of silver.

Accordingly, in the silver particle coating, silver ions in the solution are reduced and adsorbed to the surface-modified silica surface or pores, or may be combined with a binder.

The binder can be crystallized by applying pressure to the mixed solution and raising the temperature. By placing the mixed solution in a pressurizer such as an autoclave, stirring, and applying heat, the binder can be coated on silica as a crystalline solid to further add silver particles. It serves as a strong support.

That is, the high temperature is preferably 100 to 150 ° C. If it is less than 100 ° C, crystallization may not be smooth or the reaction time may be prolonged. Conversely, if it exceeds 150 ° C, the process cost increases as well as the pressure of the reaction vessel The rapid increase may greatly limit the choice of solvent.

In addition, the high pressure is preferably 10 to 20 MPa, and if it is less than 10 MPa, the target temperature or reaction time may be lowered, but crystallization may be insufficient. There may be a problem.

In addition, the antibacterial silica coated with the silver particles can experience a separate heat treatment process after drying. As the solvent or silane coupling agent may remain in the particles, it melts into the resin when the plastic resin is melted in the subsequent process to change the physical properties. Therefore, it is necessary to calcinate through heat treatment after drying, and a heat temperature of 500 to 1000 ° C is preferable. There may be a problem that the efficiency is lowered.

Next, looking at step S3 of extruding and molding the plastic resin mixed with the antibacterial silica, the mixed solution containing the silica coated with silver particles and crystalline titanate and the plastic resin are uniformly treated and the surface is modified. It is mixed thoroughly, heated and pressed, and extruded to form a film.

Here, since the antibacterial effect is exhibited when the antibacterial silica is uniformly distributed in the plastic resin, a uniform formulation is important.

Therefore, when the plastic resin is prepared as pellets and mixed with a mixed solution, the plastic resin is melted and extruded, it can be helpful for uniform distribution of silica in the plastic resin.

On the other hand, the present invention is an antibacterial film for card lamination, characterized in that it is manufactured by the above-described manufacturing method, as can be seen in FIG. 1 , is attached to the outside to a normal credit card or ID card, and is an example of a separated perspective view of the card For example, the circuit built-in layer 100 in which the communication module, authentication information, and personal information are embedded, the printed layer 200 attached to the top and bottom of the built-in circuit layer and printed with identification information, source information, name or advertisement text, etc. ) and a film layer 300 that is laminated to the upper and lower portions thereof to protect the print layer and impart durability.

A film according to the present invention is used for the film layer 300. The more the film contains the aforementioned antibacterial silica, the better the antibacterial properties, but the transparency of the film is reduced, and conversely, for transparency, the antibacterial silica is Reducing the content may reduce the antimicrobial properties.

Therefore, the film preferably has 2 to 10% by weight of antibacterial silica, and if less than 2% by weight, antibacterial properties are not expressed, and conversely, if it exceeds 10% by weight, it is helpful for antibacterial properties, but transparency may be reduced.

Preparation Example 1: Preparation of antibacterial silica to which silver particles are attached

After reacting with bis(3-triethoxysilylpropyl)tetrasulfide as a modifier to modify the surfaces of particles of silica powder having an average particle size of 12 μm, it is mixed with ethanol to remove the remaining amount of modifier by a layer separation method, and silver nitrate An aqueous solution was added and stirred, and sodium borohydride was slowly added as a reducing agent to react for 24 hours, washed, dried and heat-treated at 600° C. to prepare antibacterial silica.

Preparation Example 2: Preparation of antibacterial silica with silver particles and crystalline titanate attached

After reacting with bis(3-triethoxysilylpropyl)tetrasulfide as a modifier to modify the surface of particles of silica powder having an average particle size of 12 μm, ethanol and di(dioctylpyrophosphate) ethylene titanate are mixed, and here Sodium borohydride is slowly added as a reducing agent and reacted for 24 hours with stirring while adding a silver nitrate aqueous solution, and then crystallized in an autoclave at 15 MPa pressure and 120 ° C. It was cooled slowly, washed, dried, and heat-treated at 600° C. to prepare antibacterial silica.

Example 1

PVC (Poly Vinyl Chloride) resin 65 wt%, liquid adhesive 30 wt% polybutene, heat stabilizer (butyltin laurate complex) 2 wt%, internal lubricant (liquid paraffin) 1 wt%, external lubricant (zinc stearate) 2 The wt% was set at a temperature of 115 ° C in the extruder hopper, pulled out in the form of noodles with a diameter of 1.0 to 1.5 mm, passed through a water tank, and cut into a size of 1.5 to 2 mm in length to prepare pellets. Next, 72.5 wt% of PVC resin, the antibacterial silica solution of Preparation Example 1 (antibacterial silica 5 wt%, organic solvent), 20 wt% of the pellet, 0.5 wt% of a heat stabilizer (butyltin laurate complex), an internal lubricant (liquid paraffin) ) 0.5 g% and 1.5 wt% of external lubricant (zinc stearate) were added to the mixer and mixed, and the temperature of the mixer was maintained at 60~80℃. Next, the raw materials mixed above are put into the calender extruder hopper, and heat mixing and gelling are performed through the extruder. At this time, the temperature of the heater is maintained at 110 ~ 130 ° C. The film was extruded to a thickness of 60 to 200 μm.

Example 2

It was carried out in the same manner as in Example 1, except that the antibacterial silica solution (antibacterial silica 5 wt%) of Preparation Example 2 was used.

comparative example

25 wt% of PVC (Poly Vinyl Chloride) resin, 30 wt% of chitosan powder, 10 wt% of hyaluronic acid, 30 wt% of polybutene as a liquid adhesive, 2 wt% of heat stabilizer, 1 wt% of internal lubricant, 2 wt% of external lubricant The temperature was set to 115 ° C in the hopper, and the noodles were pulled out in the shape of a noodle with a diameter of 1.0 to 1.5 mm, passed through a water tank, and cut into a size of 1.5 to 2 mm in length to prepare pellets. Next, 72.5 wt% of PVC resin, 25 wt% of the pellets, 0.5 wt% of a heat stabilizer (butyltin laurate complex), 0.5 g% of an internal lubricant (fluid paraffin), and 1.5 wt% of an external lubricant (zinc stearate) are mixed in a mixer. and the temperature of the mixer was maintained at 60~80℃. Next, the raw materials mixed above are put into the calender extruder hopper, and heat mixing and gelling are performed through the extruder. At this time, the temperature of the heater is maintained at 110 ~ 130 ° C. The film was extruded to a thickness of 60 to 200 μm.

Experimental Example 1: Transparency

2 is a photograph observing the transparency of the overlay films prepared in Examples 1 and 2 and Comparative Examples, whereas in Examples 1 and 2, it can be seen that the film is a very transparent film, whereas in the case of Comparative Example, antibacterial property is secured. It was observed that the transparency of the film was lowered by the content of chitosan and hyaluronic acid.

Experimental Example 2: Antibacterial effect

Figure 3 is a test report of the antibacterial activity test (ASTM E2149-13a) against Staphylococcus aureus, Escherichia coli of the film prepared in Example 1, with reference to this, Example 1 is E. coli and Staphylococcus aureus (S) . aureus) showed excellent antibacterial activity in both strains.

4 is a test report of the antibacterial activity of the film prepared in Example 1 against methicillin-resistant Staphylococcus aureus (JIS Z 2801: 2010, adhesive film method). It was confirmed that it showed excellent antibacterial activity against

5 is a test report of the antibacterial activity test (JIS Z 2801: 2010, adhesive film method) against Klebsiella pneumoniae of the film prepared in Example 2, with reference to this, the overlay film of Example 2 is Klebsiella pneumoniae ) was confirmed to have excellent antibacterial activity.

Claims (10)

Step S1 to prepare a surface-modified silica mixed solution;
S2 step of preparing an antibacterial silica coated with silver particles on the silica of the mixed solution; and
Including; S3 step of extruding and molding the plastic resin mixed with the antibacterial silica;
The surface modification is a method of manufacturing an antibacterial film for card paper, characterized in that using a silane coupling agent in order to increase the reactivity to the surface or pores of the silica.
The method of claim 1,
The silica is a spherical shape and the average particle size is 5 to 20㎛ method of manufacturing an antimicrobial film for card lamination, characterized in that.
3. The method of claim 2,
The silane coupling agent is bis(3-triethoxysilylpropyl)tetrasulfide, bis(2-triethoxysilylethyl)tetrasulfide, bis(4-triethoxysilylbutyl)tetrasulfide, bis(3-trime Toxysilylpropyl)tetrasulfide, bis(2-trimethoxysilylethyl)tetrasulfide, bis(4-trimethoxysilylbutyl)tetrasulfide, bis(3-triethoxysilylpropyl)trisulfide, bis(2- Triethoxysilylethyl)trisulfide, bis(4-triethoxysilylbutyl)trisulfide, bis(3-trimethoxysilylpropyl)trisulfide, bis(2-trimethoxysilylethyl)trisulfide, bis( 4-trimethoxysilylbutyl)trisulfide, bis(3-triethoxysilylpropyl)disulfide, bis(2-triethoxysilylethyl)disulfide, bis(4-triethoxysilylbutyl)disulfide, bis(3 -trimethoxysilylpropyl)disulfide, bis(2-trimethoxysilylethyl)disulfide, bis(4-trimethoxysilylbutyl)disulfide, 3-trimethoxysilylpropyl-N,N-dimethylthiocarbamoyltetra sulfide, 3-triethoxysilylpropyl-N,N-dimethylthiocarbamoyltetrasulfide, 2-triethoxysilylethyl-N,N-dimethylthiocarbamoyltetrasulfide, 2-trimethoxysilylethyl-N, N-dimethylthiocarbamoyltetrasulfide, 3-trimethoxysilylpropylbenzothiazolyltetrasulfide, 3-triethoxysilylpropylbenzothiazoletetrasulfide, 3-trimethoxysilylpropylmethacrylate monosulfide, 3- A method for producing an antibacterial film for card paper, characterized in that at least one selected from trimethoxysilylpropyl methacrylate monosulfide.
The method of claim 1,
The mixed solution is a method of manufacturing an antimicrobial film for card lamination, characterized in that it further comprises a solvent or a binder.
4. The method of claim 3,
The solvent is methanol, ethanol, propanol, butanol, hexanol, cyclohexanol, diacetone alcohol, ethylene glycol, diethylene glycol, glycerin, diethyl ether, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol modo Butyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, propylene glycol monomethyl ether, acetone, methyl ethyl ketone, acetyl acetone, methyl isobutyl ketone, cyclohexanone, acetoacetic acid ester, methyl acetate, acetic acid A method for producing an antibacterial film for card paper, characterized in that at least one selected from the group consisting of ethyl, n-propyl acetate and i-butyl acetate.
4. The method of claim 3,
The binder is a method of manufacturing an antibacterial film for card lamination, characterized in that silicon oxide, titanium oxide.
The method of claim 1,
The silver particle coating is a method of manufacturing an antibacterial film for card paper, characterized in that the silver ions in the solution are reduced and adsorbed to the silica surface or pores.
7. The method of claim 6,
The binder is a method of manufacturing an antibacterial film for card lamination, characterized in that crystallized by high pressure and high heat.
Antibacterial film for card lamination, characterized in that it is manufactured by the manufacturing method according to any one of claims 1 to 8.
10. The method of claim 9,
The film is an antibacterial film for card lamination, characterized in that it has 2 to 10% by weight of antibacterial silica.

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