KR102363765B1 - Antimicrobial Heat Transfer Foils - Google Patents

Abstract

The antibacterial thermal transfer film according to the present invention contains silver nanoparticles, has a thickness of 12 to 38 μm, and includes a PET film layer 200 serving as a substrate; a release and antibacterial layer 300 formed on the entire surface (the upper surface of the drawing) of the PET film layer 200, containing silver (Ag) and a release agent, and having a number of copper plates #100 to #200; The printing layer 400 is formed on the release and antibacterial layer 300, and the number of copper plates is #100 to #200; and an adhesive layer 600 formed on the printing layer 400, the number of copper plates being #100 to #200; and the PET film layer 200; release and antibacterial layer 300; printed layer 400; and the adhesive layer 600; is made by sequentially stacking and thermally transferred to the adherend 10, and then only the PET film layer 200 is separated, so that the release and antibacterial layer 300 is exposed to the outside. ) ions directly attack _{microorganisms} ⁽ _bacteria , viruses, etc.) has the characteristics to

Description

Antimicrobial Heat Transfer Foils

The present invention relates to an antibacterial thermal transfer film, and more particularly, as a characteristic of a polymer coating layer containing fine particles to add antibacterial properties, by interposing the polymer coating layer inside a thermal transfer film having a printed layer, the adherend It relates to an antibacterial thermal transfer film for bonding a polymer coating layer and a printing layer of a desired design.

Thermal transfer film is a method of expressing a picture or text on a subject in a "valve" style by applying constant heat and pressure to a product made of plastic, for example, a material to be adhered, such as a tree coated with chemicals on the surface. means the film of

As an application example of the thermal transfer film, various stationery (e.g., pencil, ballpoint pen, sharpener, ruler, sticky glue, file case, etc.), household items (e.g., toothbrush, cup, bathroom product, trash can, water bottle, etc.) , is used in cosmetics (eg, mascara, nail art, compact, cosmetic tube, etc.).

Patent Document 0001 includes 10 to 15% by weight of vinyl acetate ester, 70 to 75% by weight of 1-isocyanatooctadecane, and 5 to 10% by weight of additives based on the total weight of the back coating layer, and toluene as a diluent Anti-blocking back coating layer 10 comprising 3 to 10% by weight; PET film layer 20; a first release layer 30 of an acrylic resin; a second release layer 31 of an acrylic resin; A print layer 40 having a design drawn with ink having one or more colors, and made of a urethane-based resin; a first foaming layer 50 containing 10 to 20% of the capsule foam; a second foam layer 51 containing 10 to 20% of the capsule foam; Adhesive primer layer 60 made of a urethane-based resin; a first adhesive layer 70 for maintaining adhesion to the surface of an adherend; and a second adhesive layer 71 for maintaining adhesion to the surface of the adherend; a foamed thermal transfer film with improved anti-blocking properties is described, characterized in that it is sequentially laminated. In addition to physical properties including clarity and adhesive strength, it has excellent anti-blocking performance and excellent embossing properties of the foam.

On the other hand, due to rapid environmental changes in the global village such as global warming, mankind is exposed to indiscriminate attacks of new pathogens such as influenza, which have not been dealt with before. In addition, as international exchanges become more frequent in the global era, the speed of infection spreads across continents in an instant, and the scope of infection is spreading across the globe.

However, Patent Document 0001 described above has a limitation in that it is difficult to prevent such viruses or bacteria.

In this era of war against viruses and bacteria, the easiest way to prevent the spread of pathogens at the level of ordinary citizens is to manage hands, which are the transmission medium of bacteria and viruses, There is no guarantee that there will be a water facility nearby, and even if you wash your hands, it is difficult to practice unless you are a 'patient with tuberculosis'. And even if you wash your hands, if you come into contact with an infected object, such as a handle, the previous hand washing has no meaning.

In order to solve this problem, hand sanitizers and disinfectants have been released on the market, but most hand sanitizers and disinfectants lack consideration for portability and portability, making it impossible to prevent bacterial and viral infection after disinfection once. has been Although a portable hand sanitizer container is available, it is too bulky to fit in a pocket and must be placed in a separate bag such as a handbag to carry.

After all, there is a limit to separately providing a portable disinfectant, and as a more fundamental solution, an antibacterial thermal transfer film having a virus blocking and repelling function is attached to the surface of frequently used products (stationery, household goods, cosmetics). A method of manufacturing a product may be a better solution in terms of cost for the manufacturing company or user convenience and functionality.

Republic of Korea Patent Publication No. 10-2020-0038001 (Title of the invention: foamed thermal transfer film with improved anti-blocking properties)

The technical problem to be achieved by the technical idea of the present invention is antibacterial thermal transfer comprising a polymer coating layer containing silver particles having a virus blocking and repelling function on the surface of products (stationery, household goods, cosmetics) frequently used by modern people to provide a film.

In order to achieve the above technical object, an antibacterial thermal transfer film containing silver nanoparticles according to an embodiment of the present invention includes a PET film layer 200 having a thickness of 12 to 38 μm and serving as a substrate; a release and antibacterial layer 300 formed on the entire surface (the upper surface of the drawing) of the PET film layer 200, containing silver (Ag) and a release agent, and having a number of copper plates #100 to #200; The printing layer 400 is formed on the release and antibacterial layer 300, and the number of copper plates is #100 to #200; and an adhesive layer 600 formed on the printing layer 400, the number of copper plates being #100 to #200; and the PET film layer 200; release and antibacterial layer 300; printed layer 400; and the adhesive layer 600; is made by sequentially stacking and thermally transferred to the adherend 10, and then only the PET film layer 200 is separated, so that the release and antibacterial layer 300 is exposed to the outside. ) ions directly attack _{microorganisms} ⁽ _bacteria , viruses, etc.) characterized by making it happen.

The antibacterial thermal transfer film containing silver nanoparticles according to an embodiment of the present invention is formed on the back surface of the PET film layer 200, has #100 to #400 copper plate numbers, and has ethenyl acetate (acetic acid). acid ethenyl ester) 10 to 15 parts by weight, 1-isocyanatooctadecane 70 to 75 parts by weight and 5 to 10 parts by weight of additives 90 to 97 parts by weight; and 3 to 10 parts by weight of a diluent It may further include a; back coating layer 100 including;

The antibacterial thermal transfer film containing silver nanoparticles according to an embodiment of the present invention is formed between the printing layer 400 and the adhesive layer 600 , and aluminum (Al) is vacuumed on the printing layer 400 . It may further include a; a deposition layer 500 formed by depositing under the.

As described above, since the antibacterial thermal transfer film according to the present invention is a product used in the above-mentioned various product groups (stationery, household goods, cosmetics), even if it comes into direct contact with the user's hand, its surface is always antibacterial Because it maintains the action, it has the advantage that even if other family members use the cups that have been in contact with family members with various cold viruses at home, there is little chance of virus transmission. In particular, when a patient writes a "visit statement" at a hospital where various viruses exist, or if the writing instruments used by doctors and nurses are always antibacterial, mutual virus transmission can be suppressed.

In addition, the antibacterial heat transfer film according to the present invention can be applied for foaming, hologram, fragrance transfer, and zion transfer by further interposing a foam film, a hologram film, a fragrance transfer film, and a Zion transfer film therein.

1 is an antibacterial thermal transfer film containing silver nanoparticles according to an embodiment of the present invention, before thermal transfer (A) the structure of the antibacterial thermal transfer film, and after thermal transfer (B) antibacterial thermal transfer film It is a diagram showing an example of the structure of
2 is a view showing the principle that oxygen activated by ions paralyzes the function of the cellular tissues of microorganisms.
FIG. 3 is a view showing another example of the structure of the antibacterial thermal transfer film of FIG. 1 .
FIG. 4 is a view showing another example of the structure of the antibacterial thermal transfer film of FIG. 1 .
FIG. 5 is a view showing another example of the structure of the antibacterial thermal transfer film of FIG. 1 .

Hereinafter, the present invention will be described in detail. The embodiments and drawings introduced below are provided as examples so that the spirit of the present invention can be sufficiently conveyed to those skilled in the art. In addition, unless there is another definition in the technical and scientific terms used in the present invention, it has the meaning commonly understood by those of ordinary skill in the art to which this invention belongs, and in the following description and accompanying drawings, the present invention Description of known functions and configurations that may unnecessarily obscure the gist of will be omitted.

In the description of the present invention, the term "copper plate number" means the number of dots applied to the copper plate, the larger the size, the smaller the particle size, and the printing operation is performed within the set range. . For example, the number of the copper plate player #100 means 100 ea/inch ² .

1 is an antibacterial thermal transfer film containing silver nanoparticles according to an embodiment of the present invention, before thermal transfer (A) the structure of the antibacterial thermal transfer film, and after thermal transfer (B) antibacterial thermal transfer film It is a diagram showing an example of the structure of 2 is a view showing the principle that oxygen activated by ions paralyzes the function of the cellular tissues of microorganisms.

As shown in the example of FIG. 1 , the antibacterial thermal transfer film containing silver nanoparticles according to an embodiment of the present invention includes a PET film layer 200 serving as a substrate; a release and antibacterial layer 300 formed on the entire surface of the PET film layer 200 (the upper surface is based on the drawing); a printed layer 400 formed on the release and antibacterial layer 300; and an adhesive layer 600 formed on the print layer 400 .

As described above, the antibacterial thermal transfer film according to the present invention includes a PET film layer 200; release and antibacterial layer 300; printed layer 400; and the adhesive layer 600; is made by sequentially stacking the adhesive layer 600, which is the front surface of the antibacterial thermal transfer film, in contact with the adherend 10, and after thermal transfer, only the PET film layer 200 is separated. , because the release and antibacterial layer 300 is exposed to the outside, silver (Ag) ions directly attack microorganisms (bacteria, viruses, etc.) to inhibit metabolic activity, and oxygen (O ₂ ) in the air is converted to active oxygen (O ₂ ^- ), so that the activated oxygen paralyzes the function of the cellular tissue of the microorganism, the object and effect of the present invention described above are achieved.

Hereinafter, each layer of the antibacterial thermal transfer film will be described in detail. The PET film layer 200 serves as a transport for expressing a design such as a letter or a picture on the adherend 10 .

The PET film layer 200 receives thermal energy applied from the transfer printing apparatus having a gravure printed copper plate and sequentially transfers it from the release and antibacterial layer 300 to the adhesive layer 600, and the adhesive layer 600 is the adherend 10 ) to be firmly adhered to the surface, and then separated from the release and antibacterial layer 300 .

At this time, the thickness of the PET film layer 200 is preferably 12 to 38 μm, and does not affect the adherend 10 , which is an adherent transferred within the above range, only the design of the printed layer 400 is applied to the object. It plays the role of conveying properly so that it can be expressed clearly.

The release and antibacterial layer 300 serves to facilitate release and enhance the antibacterial effect of silver (Ag). That is, the release and antibacterial layer 300 is formed on the entire surface of the PET film layer 200 through a gravure printing method using a gravure printed copper plate having a number of #100 to #200 copper plates.

At this time, the release and antibacterial layer 300 may use, in addition to acrylic, urethane, vinyl, OP-WAX, cellulose acetate, etc. alone or a combination thereof as the main resin, preferably containing an acrylic resin as a main component. It is good to achieve the object of the present invention.

In more detail, as shown in the example of FIG. 1 , the release and antibacterial layer 300 includes 95 to 99.7 parts by weight of an acrylic resin as a release agent, and a zirconium and zeolite carrier 301 on which silver (Ag) nanoparticles are supported. By grinding and mixing 0.3 to 5 parts by weight, the zirconium and zeolite carrier 301 having a size of 1 to 5 μm is dispersed in the release and antibacterial layer 300 .

Here, the release agent is a form of dissolving an acrylic resin in a solvent composed of toluene, MEK, EA, PMA, alcohol, annon, and the like, and the solid content may be used in the range of 0.2 to 25 wt%.

The number of copper plates of the release and antibacterial layer 300 is preferably #100 to #200, and although it varies depending on the depth (depth) of the copper plate used for gravure printing or the number of carpenters, the PET film to have a thickness of 0.1 to 10 ㎛ It is preferable to apply at a speed of 40 to 150 m/min on top of (100).

On the other hand, when the release and antibacterial layer 300 is exposed to the outside after the above-described PET film layer 200 is separated, air is in contact with silver nanoparticles, and activated silver (Ag) ions are generated by microorganisms (bacteria, viruses, etc.) It directly attacks and inhibits metabolic activity, and by converting oxygen (O ₂ ) in the air into active oxygen (O ₂ ^- ), the activated oxygen paralyzes the function of the cellular tissues of microorganisms.

The printing layer 400 is formed on the release and antibacterial layer 300 , and is a layer expressing a design drawn with ink having one or more colors (1 to 8 degrees) on the surface of the adherend 10 .

As shown in the example of Figure 1, the printing layer 400 is formed on the resin layer 410; and the resin layer 410 comprising at least one of an acrylic resin, a urethane-based resin, and a polypropylene-based resin, It may include; a design layer 420 drawn with ink having one or more colors.

Here, the design layer 420 may use acrylic, urethane, vinyl, nitrocerolose, nylon alone or a combination thereof as the main resin, but may preferably include a urethane-based resin as a main component. It is a liquid ink that is combined with the main resin of urethane resin, pigments (pigment/ink, blue, red, yellow, white) that can show color, and a solvent composed of toluene, MEK, EA, 27-12PMA, alcohols, annon, etc. It is preferably used within 5 to 20% of the solid content. The design layer 420 includes 50 to 100 parts by weight of a urethane-based resin, 80 to 130 parts by weight of an acrylic resin, 70 to 130 parts by weight of a pigment, 0.5 to 15 parts by weight of silica, 0.5 to 10 parts by weight of an antistatic agent, and 615 to 790 parts by weight of an organic solvent. It may be more desirable to mix the parts.

The number of copper plates of the printing layer 400 is preferably #100 to #200, and although it varies depending on the depth (depth) of the copper plate used for gravure printing or the number of carpenters, the release and antibacterial layer to have a thickness of 0.5 to 3 ㎛ (300) It is preferable to apply the upper portion at a speed of 40 to 150 m/min. Accordingly, the printing layer 400 may have a visual feeling by expressing various designs on the surface of the adherend 10, and in this case, it is preferable to print the printing method using a gravure printer. Partial colors may differ depending on the shape of the printed design.

The adhesive layer 600 is formed on the print layer 400 . In detail, the adhesive layer 600 is applied to the entire upper surface of the printed layer 400 so that the printed layer 400 is transferred to the adherend 10 to form a printed surface. Acrylic, urethane, polystyrene (PS) , polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), polycarbonate (PC), and styrene- It characterized in that it contains one or more resins selected from the group consisting of acrylonitrile (SAN).

In detail, the adhesive layer 600 is mixed with 100 to 220 parts by weight of the resin, 30 to 80 parts by weight of an auxiliary resin that is a polyolefin-based resin, 10 to 20 parts by weight of silica, 10 to 30 parts by weight of a stabilizer, and 650 to 850 parts by weight of an organic solvent. More preferably, it is preferably applied to have a certain thickness on the upper portion of the printing layer 400 according to the type of the main resin.

The number of copper plates of the adhesive layer 600 is preferably #100 to #200, and although there is variation depending on the depth (depth) of the copper plate used in the gravure printing method or the number of carpenters, the printing layer 400 has a thickness of 0.1 to 3 μm. It is preferable to apply at a speed of 40 to 150 m/min on the upper part of the

As described above, the present invention is a PET film layer 200; PET film layer 200; release and antibacterial layer 300; printed layer 400; and an adhesive layer 600; the antibacterial thermal transfer film formed by laminating this sequentially is attached so that the adhesive layer 600 is in contact with the surface of the adherend 10 to be printed, and 3 to 10 kg·f at a temperature of 170 to 250° C. When a pressure of /cm 2 is applied, the transfer film is adhered to the surface of the adherend 10 .

FIG. 3 is a view showing another example of the structure of the antibacterial thermal transfer film of FIG. 1 . As shown in the example of FIG. 3 , the antibacterial thermal transfer film containing silver nanoparticles according to an embodiment of the present invention includes a back coating layer 100 formed on the back surface of the PET film layer 200; may include

In detail, the back coating layer 100 is a layer for strengthening the blocking properties, and based on the total weight of the back coating layer 100, 10 to 15 parts by weight of vinyl acetate ester, 70 to 75 1-isocyanatooctadecane 5 to 10 parts by weight of the additive and 3 to 10 parts by weight of toluene as a diluent may be included. As the additive, a stabilizer, a dispersant, etc. commonly used in the coating field may be used.

The combination ratio of such components is composed of a ratio optimized for anti-blocking properties, and if it is out of this, harmony with other layers is insufficient, and there is a fear that a blocking phenomenon occurs during drying of the film.

It is more preferable that the number of copper plate numbers of the back coating layer 100 is #200 to 400, and as the surface smoothness is extremely poor, a lower number is adopted and printed. This is because if this is not done, the ink may become tangled.

FIG. 4 is a view showing another example of the structure of the antibacterial thermal transfer film of FIG. 1 . As shown in the example of FIG. 4 , the antibacterial thermal transfer film containing silver nanoparticles according to an embodiment of the present invention includes a deposition layer 500 formed between a printing layer 400 and an adhesive layer 600 ; may further include.

The deposition layer 500 may be attached to the above-described printed layer 400 by heating and evaporating aluminum (Al).

As an example for forming the deposition layer 500 , aluminum is heated and evaporated in a vacuum to a temperature of about 1200 to 1400° C. to be attached to the printed layer 400 in an atomic or molecular state. In the case of vacuum deposition, there is an advantage in that a clean deposition film without the influence of impurities can be formed. In addition, since it is difficult to form an aluminum film having a thickness of 1 μm or less by a general coating method, a vacuum deposition method is preferable in the present invention.

As described above, according to the present invention, it is possible to prepare an antibacterial thermal transfer film exhibiting a metallic texture as a whole by thermal transfer by including the deposition layer 500 .

FIG. 5 is a view showing another example of the structure of the antibacterial thermal transfer film of FIG. 1 . As shown in the example of FIG. 5 , the antibacterial thermal transfer film containing silver nanoparticles according to an embodiment of the present invention includes a back coating layer 100 ; PET film layer 200; release and antibacterial layer 300; printed layer 400; colored layer 450; a deposition layer 500; a deposition primer layer 550; and an adhesive layer 600; may be sequentially stacked.

The colored layer 450 may contain known additives for resins, such as fragrances, colorants, and fillers, if necessary, and when the colored layer 450 is included, the color is changed according to the surface of the antibacterial thermal transfer film. It becomes possible to express a pattern or the like on the surface of the antibacterial thermal transfer film.

The deposition primer layer 550 is a layer that provides a buffering action between the deposition layer 500 and the adhesive layer 600 , and has an effect of improving the physical strength of the deposition layer 500 .

The deposition primer layer 550 is preferably made of a urethane-based resin, 40 to 100 parts by weight of a urethane-based resin, 50 to 100 parts by weight of an acrylic resin, 10 to 30 parts by weight of a vinyl-based resin, 10 to 30 parts by weight of a stabilizer, and an organic solvent 740 It is more preferable to use a mixture of to 890 parts by weight.

The number of copper plates of the deposition primer layer 550 is preferably #100 to 200, and the deposition primer layer 550 preferably contains 10 to 20 parts by weight of solid content.

The deposition primer layer 550 is applied on top of the deposition layer 500 , but there are variations depending on the depth (depth) of the original plate used in the printing machine or the number of carpenters, but it is preferably applied to a thickness of 0.1 to 3 μm.

As described above, the antibacterial thermal transfer film containing silver nanoparticles according to the present invention has excellent chemical durability by using a gravure printing process. The antibacterial thermal transfer film manufactured in this way can realize coating at a low cost on curved areas such as pencils, and is used in various product groups (stationery, household goods, cosmetics) as described above. Even in direct contact, the surface maintains antibacterial action at all times, so even if another family member uses a cup that has been in contact with a family member with various cold viruses at home, it has the advantage that the virus hardly spreads. In particular, when a patient writes a "visit statement" at a hospital where various viruses exist, or if the writing instruments used by doctors and nurses are always antibacterial, mutual virus transmission can be suppressed.

The embodiments described in this specification and the accompanying drawings are merely illustrative of some of the technical ideas included in the present invention. Therefore, since the embodiments disclosed in the present specification are for explanation rather than limitation of the technical spirit of the present invention, it is obvious that the scope of the technical spirit of the present invention is not limited by these embodiments. Modifications and specific embodiments that can be easily inferred by a person of ordinary skill in the art within the scope of the technical idea included in the specification and drawings of the present invention are included in the scope of the present invention. will have to be interpreted.

10: adherend
100: back coating layer
200: PET film layer
300: release and antibacterial layer
301: zirconium and zeolite support
400: printed layer
410: resin layer
420: design layer
450: colored layer
500: deposition layer
550: deposition primer layer
600: adhesive layer

Claims (3)

A PET film layer 200 having a thickness of 12 to 38 μm and serving as a substrate;
a release and antibacterial layer 300 formed on the entire surface (the upper surface of the drawing) of the PET film layer 200, containing silver (Ag) and a release agent, and having a number of copper plates #100 to #200;
The printing layer 400 is formed on the release and antibacterial layer 300, and the number of copper plates is #100 to #200, and
It is formed on the printing layer 400, and the number of copper plates includes an adhesive layer 600 of #100 to #200,
the PET film layer 200; release and antibacterial layer 300; The printing layer 400 and the adhesive layer 600 are sequentially laminated, and after thermal transfer to the adherend 10, only the PET film layer 200 is separated, whereby the release and antibacterial layer 300 is exposed to the outside. Due to this, silver (Ag) ions directly attack microorganisms (bacteria, viruses, etc.), inhibiting metabolic activity, and converting oxygen (O ₂ ) in the air into active oxygen (O ₂ ^- ), and the activated oxygen is the cellular tissue of microorganisms. Contains silver nanoparticles that paralyze the function of
It is formed on the back surface of the PET film layer 200, has #100 to #400 copper plate numbers, and 10 to 15 parts by weight of acetic acid ethenyl ester, 1-isocyanatooctadecane (1 -Isocyanatooctadecane) 70 to 75 parts by weight and 5 to 10 parts by weight of the additive, including 90 to 97 parts by weight of the main agent and 3 to 10 parts by weight of a diluent, the back coating layer 100 including,
It is formed between the printed layer 400 and the adhesive layer 600, and includes a deposition layer 500 formed by depositing aluminum (Al) under vacuum on the printed layer 400,
The release and antibacterial layer 300 is prepared by pulverizing and mixing 95 to 99.7 parts by weight of an acrylic resin as a release agent and 0.3 to 5 parts by weight of a zirconium and zeolite carrier 301 on which silver (Ag) nanoparticles are supported, thereby having a size of 1 to 5 μm. A zirconium and zeolite carrier 301 having a release and antibacterial layer 300 is dispersedly formed inside,
The release agent is a form of dissolving an acrylic resin in a solvent composed of toluene, MEK, EA, PMA, alcohol, annone, etc., and the solid content is 0.2 to 25 wt%,
The release and antibacterial layer 300 has a number of #100 to #200 copper plates, and is applied on the PET film 100 at a speed of 40 to 150 m/min so as to have a thickness of 0.1 to 10 μm. antibacterial thermal transfer film. delete delete

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