KR102401434B1 - Furniture panel with antibacterial function and method for manufacturing the same - Google Patents

Abstract

The present invention relates to a furniture panel having an antibacterial function and a manufacturing method thereof, comprising processes of: forming a primer layer by applying a primer to each of the front and rear surfaces of a polypropylene film; forming a printing layer on the primer layer; forming an antibacterial layer by applying an antibacterial mixture paint containing copper powder, an inorganic antimicrobial agent, and an ultraviolet curable resin on the printing layer; curing the antibacterial layer by irradiating ultraviolet (UV) to the antibacterial layer; and adhering the polypropylene film having the cured antibacterial layer to a particle board, thereby manufacturing a panel for furniture having an antibacterial function.

Description

Furniture panel having antibacterial function and manufacturing method thereof {Furniture panel with antibacterial function and method for manufacturing the same}

It relates to a furniture panel having an antibacterial function and a manufacturing method thereof.

Corona 19 (COVID-19) has become an epidemic since it was first discovered in Wuhan, Hubei Province, China in December 2019, and has spread worldwide. Symptoms of COVID-19 vary, but include fever, cough, headache, fatigue, shortness of breath, and loss of smell and taste. Corona 19 is mainly spread through droplet contact with an infected person, but it is known that the possibility of transmission is high when another person touches an object touched by an infected person.

Furniture is a product that exists in most spaces where humans work and comes into contact with every day. In the case of furniture installed in multi-use facilities such as health clubs and public baths, the possibility of transmission of COVID-19 through furniture as a medium is very high because several people come into contact while using it. Republic of Korea Patent No. 10-2245815 "Furniture manufacturing panel combined with antibacterial film" presents a furniture manufacturing panel combined with an antibacterial film that is harmless to the human body, implements excellent antibacterial power, is eco-friendly and can improve durability. .

However, this prior art has a problem in that it is difficult to sterilize various bacteria and viruses because the antibacterial activity mainly depends on the copper nanoparticles, so it is limited to the antibacterial effect of the copper nanoparticles. Although the prior art mentions the antibacterial effect of natural extracts, such as cypress, blackberry, eoseongcho, wasabi, hwangchil, and ginkgo, it is known that the antibacterial effect is insignificant compared to copper nanoparticles.

According to this prior art, in addition to copper nanoparticles, expanded graphite powder, gelite, Korean paper, natural extract, capsule powder, polyurethane resin and dispersant are mixed and coated on the panel film layer. In the case of furniture, it is manufactured in a very large area compared to the antibacterial sheet, which is usually produced in the size of A4, so if copper nanoparticles are not evenly distributed over the entire exposed area of the furniture, there is a possibility that the antibacterial performance will decrease on some exposed surfaces of the furniture. high. Since the liquid coating composition containing copper nanoparticles is attached to the film through a method of drying at a low temperature, the copper nanoparticles are easy to desorb, so there is a problem that the antibacterial activity may decrease when the particles are desorbed.

An object of the present invention is to provide a method of manufacturing a furniture panel that has an antibacterial effect against various bacteria and viruses such as Staphylococcus aureus, E. coli, and pneumococcus, and exhibits a constant antibacterial activity over the entire surface of the panel and is resistant to scratches.

A method of manufacturing a furniture panel having an antibacterial function according to an aspect of the present invention comprises: a priming step of forming a primer layer on the front and rear surfaces of the polypropylene film by applying a primer to each of the front and rear surfaces of the polypropylene film; A printing step of forming a printed layer on the primer layer using a printer on the primer layer formed on the front surface of the polypropylene film; an antibacterial treatment step of forming an antibacterial layer on the print layer by applying an antibacterial mixture paint containing copper powder, an inorganic antibacterial agent, and an ultraviolet curable resin on the print layer; UV curing step of curing the antibacterial layer by irradiating ultraviolet (UV) to the antibacterial layer; and an adhesion step of adhering the cured polypropylene film having the antibacterial layer to the particle board.

The antibacterial treatment step may include: homogenizing the first partial mixture by stirring the first partial mixture consisting of an ultraviolet curable resin and copper powder; homogenizing the second partial mixture by stirring a second partial mixture consisting of an ultraviolet curable resin and an inorganic antibacterial agent; homogenizing the antimicrobial mixture paint by stirring the antimicrobial mixture paint composed of the homogenized first partial mixture and the homogenized second partial mixture; and forming the antimicrobial layer on the printed layer by applying the homogenized antimicrobial mixture paint on the printed layer.

In the homogenizing of the first partial mixture, a first partial mixture consisting of 100 parts by weight of a UV curable resin and 7 to 9 parts by weight of copper powder is added to the first stirrer and stirred until the first partial mixture is homogenized, and the In the step of homogenizing the second partial mixture, the second partial mixture consisting of 100 parts by weight of the UV curable resin and 4 to 9 parts by weight of the inorganic antibacterial agent is put into the second stirrer, and the second partial mixture can be stirred until homogenized.

In the homogenizing of the first partial mixture, the first partial mixture is added to the first stirrer and stirred at 800 to 1000 rpm for 15 to 20 minutes, and homogenizing the second partial mixture is the second part The mixture is put into the second stirrer and stirred at 800 to 1000 rpm for 15 to 20 minutes, and the step of homogenizing the antibacterial mixture paint may be stirred at 300 to 400 rpm for 3 to 4 minutes.

The inorganic antibacterial agent may be at least two or more selected from the group consisting of SiO ₂ , Al ₂ O ₃ , Ag, Zn, and Na. The inorganic antibacterial agent may include SiO ₂ 100 parts by weight, Al ₂ O ₃ 90 to 110 parts by weight, Ag 90 to 110 parts by weight, Zn 90 to 110 parts by weight, and Na 90 to 110 parts by weight.

The adhesive may include an ethylene-vinyl acetate copolymer emulsion, fluorite, bentonite, activated carbon, and graphite. The adhesive may include 100 parts by weight of an ethylene-vinyl acetate copolymer emulsion, 10 to 20 parts by weight of fluorite, 4 to 8 parts by weight of bentonite, 2 to 3 parts by weight of activated carbon, and 1 to 2 parts by weight of graphite.

A furniture panel according to another aspect of the present invention is manufactured according to the above manufacturing method.

The furniture panel having an antibacterial function according to the present invention exhibits uniform and high antibacterial activity on the entire surface against E. coli, Staphylococcus aureus, and pneumococcus, and has strong resistance to fungi and fungi as a first-class antifungal property. In addition, the antibacterial film is eco-friendly because it is manufactured based on a polypropylene film and can be recycled, and has strong scratch resistance due to the UV-curable resin.

If the furniture panel is manufactured using the antibacterial film produced by the present invention and the adhesive that does not release harmful substances, it does not have a harmful effect on users and workers, so it can be safely used in various fields such as interior, furniture, and film. It is not limited to the effect as described above, and another effect may be derived from the following description.

1 is a flowchart of a method for manufacturing a panel for furniture according to the present invention.
FIG. 2 is a cross-sectional view of a furniture panel manufactured according to the manufacturing method shown in FIG. 1 .

Hereinafter, the present invention will be described in detail with reference to the drawings. The present invention described below relates to a method for manufacturing a furniture panel that has an antibacterial effect against various bacteria and viruses, exhibits a constant antibacterial activity over the entire surface of the panel and is resistant to scratches, and briefly as a manufacturing method of a “furniture panel” It can also be called abbreviated.

1 is a flowchart of a method for manufacturing a panel for furniture according to the present invention. Referring to Figure 1, the method of manufacturing a panel for furniture according to the present invention is It consists of a priming step (S1), a printing step (S2), an antibacterial treatment step (S3), an ultraviolet curing step (S4), and an adhesion step (S5). 2 is a cross-sectional view of the furniture panel 100 manufactured according to the manufacturing method shown in FIG. 1 . Referring to FIG. 2 , a furniture panel 100 according to the present invention includes a polypropylene film 101 , a primer layer 102 , a printing layer 103 , an antibacterial layer 104 , an adhesive layer 105 , and a particle board 106 . ) is composed of

In the priming step (S1), a primer layer 104 is formed on each of the front and rear surfaces of the polypropylene film 101 by applying a primer to each of the front and rear surfaces of the polypropylene film 101. The primer layer 102 formed on each of the front and back surfaces of the polypropylene film 101 allows the printing pattern to be printed evenly, and when the antibacterial layer 104 is coated on the printed pattern, the polypropylene film and the antibacterial layer 104 ) plays a role in maintaining semi-permanent adhesion so that it can be strongly fused.

The polypropylene film 101 refers to a thin film made of polypropylene, and a film having a commonly used thickness such as 0.05 mm, 0.10 mm, or 0.20 mm is preferable.

The primer may be applied to the front and rear surfaces of the polypropylene film 101 using a coating roller or the like. Then, when moisture of the primer is removed using a hot air dryer, the primer is cured while drying, and the primer layer 102 is formed. Prior to applying the primer, corona treatment may be performed to impart polarity to the surface of the polypropylene film 101 . When the polarity is given in this way, when the printing layer 103 is formed on the primer layer 102 in the printing step (S2), which is the step after the priming step (S1), it is possible to print neatly than when having a non-polarity, and the surface strength can increase

As the primer, any one selected from a polyester resin, a polyurethane resin, and a polyvinyl resin may be used. As such, the material used as the primer is a kind of toxic material such as carcinogenicity and environmental hormone emission, but in the present invention, it is blocked by the antibacterial layer 104, so that a non-toxic and eco-friendly furniture panel is possible.

In the printing step (S2), the printing layer (103) on the primer layer (104) by spraying ink using a printer on the primer layer (104) formed on the front surface of the polypropylene film (101) in the priming step (S1) (S2) to form By the printing step (S2), a print pattern of various patterns may be formed on the primer layer 102 on the polypropylene film 101 according to the user's preference.

In the printing step (S2), a printing operation on the primer layer 104 may be performed using a gravure printing method commonly used for film printing. The gravure printing method is a method in which the printing layer 103 is transferred to the injection-molded product by heat and pressure, and is used in the production of various films in a way that painting and printing are performed at once, saving time, process, and obtaining high completeness is a method to be It is a suitable printing method for polypropylene because the film, the object to be printed, passes between the engraved gravure copper plate and the pressing roller, and high-speed mass production is possible, and it can be easily printed on various films. Water-based ink can be used for gravure printing. Compared to oil-based ink, water-based ink does not emit volatile and harmful substances, so it is eco-friendly and has the advantage of being harmless to the human body.

In the antibacterial treatment step (S3), an antibacterial mixture paint made of copper powder, an inorganic antibacterial agent in powder form, and a liquid ultraviolet curable resin is applied on the printed layer 103 formed in the printing step (S2) by applying an antibacterial compound paint on the printed layer 103. An antibacterial layer 104 is formed thereon. By this process, the surface of the polypropylene film 101 has an antibacterial function.

Copper powder is a powder characterized in that it has a nano-scale size of 10 nm to 80 nm, and as is traditionally known, it is a metal having strong antibacterial activity. The antibacterial activity is very strong due to the copper powder of It is a metal that is used as an antibacterial agent in various products because it is not only cheaper than other materials with antibacterial properties, but also has the advantage of being harmless to the human body.

The inorganic antibacterial agent consists of a combination of at least two or more types from the group consisting of SiO ₂ , Al ₂ O ₃ , Ag, Zn, Na, etc. . Each component of the inorganic antibacterial agent has superior antibacterial ability against specific bacteria and viruses compared to other components. For example, the inorganic antibacterial agent may be composed of 100 parts by weight of SiO ₂ , 90 to 110 parts by weight of Al ₂ O ₃ , 90 to 110 parts by weight of Ag, 90 to 110 parts by weight of Zn, and 90 to 110 parts by weight of Na. At this time, when the content of each component exceeds the suggested reference range, the antibacterial effect of the specific component may be sharply decreased.

At this time, the particle size distribution of each component is preferably 0.1 to 10 μm, and since it has a fine particle size, if it is mixed in the resin and applied evenly on a flat surface, the particles can be evenly distributed over the entire surface, giving a certain antibacterial power over a wide range. have. In addition, since there is almost no heat discoloration at a general molding temperature after mixing in UV-curable resin, it is added in the manufacture of general-purpose resins and papers to enhance antibacterial properties. Since the present invention uses a mixture of an inorganic antibacterial agent and copper powder, it exhibits higher antibacterial activity than when only copper powder or inorganic antibacterial agent is used, respectively.

As the UV curable resin, any type of resin that can be cured by UV light may be used, and mainly epoxy resin, urethane resin, acrylic resin, fluororesin, etc. may be used, but the type is not limited.

UV curable resin is a solid curing agent. It does not use a volatile liquid solvent, so it can reduce pollution caused by solvent volatilization during work. Since it is cured by irradiation, it has the advantage of reducing manufacturing time and increasing production, so it is used in products in various fields. In order to induce a light change, 0.1 to 10 parts by weight of a photoinitiator may be included with respect to 100 parts by weight of the UV-curable resin.

If each component is not evenly distributed with respect to the total volume of the antimicrobial mixture, the antibacterial effect of the furniture panel will not appear evenly over the entire area. Hereinafter, the antibacterial treatment step (S3) for making the antibacterial effect of the furniture panel appear evenly over the entire area will be described in detail.

The antibacterial treatment step (S3) is a step of homogenizing the first partial mixture by stirring the first partial mixture consisting of the ultraviolet curable resin and copper powder, The second partial mixture by stirring the second partial mixture consisting of the ultraviolet curable resin and the inorganic antibacterial agent homogenizing the antibacterial mixture paint by stirring the antibacterial mixture paint composed of the homogenized first partial mixture and the homogenized second partial mixture in this way, and homogenizing the antibacterial mixture paint on the printing layer 103. and forming an antibacterial layer on the printed layer 103 by applying it.

A first partial mixture consisting of 100 parts by weight of ultraviolet curable resin and 7 to 9 parts by weight of copper powder is put into the first stirrer, and the first partial mixture is heated at 90 to 110 ° C. for 15 to 20 minutes at 800 to 1000 rpm until homogenized. At the same time as stirring, the second partial mixture consisting of 100 parts by weight of the ultraviolet curable resin and 4 to 9 parts by weight of the inorganic antibacterial agent is put into the second stirrer, and the second partial mixture is homogenized at 90 to 110 ° C. for 15 to 20 minutes. Stir at ~1000 rpm. If the stirring time and rpm are less than the above-mentioned values, homogenization is insufficient, and if it is high, the degree of homogenization improvement is insignificant. If the temperature is less than 90 ℃, the viscosity of the UV-curable resin is too high, so stirring may not be easy.

When the copper powder content of the first partial mixture is less than 7 parts by weight, the antibacterial function of the furniture panel due to the copper component is sharply decreased, and when it exceeds 9 parts by weight, the antibacterial function of the furniture panel is insignificant, whereas the surface strength of the furniture panel is sharply falls If the content of the inorganic antibacterial agent in the second partial mixture is less than 4 parts by weight, the antibacterial function of the furniture panel by the inorganic antibacterial agent is sharply decreased. falls

Then, after taking out the second partial mixture to the second stirrer, it is put into the first stirrer, and the antibacterial mixture paint consisting of the first partial mixture and the homogenized second partial mixture is applied at 90 to 110 ° C. until the antibacterial mixture is homogenized. Stir at 300-400 rpm for 4 minutes. If the stirring time and rpm are less than the above-mentioned values, homogenization is insufficient, and if it is high, the degree of homogenization improvement is insignificant. In particular, when the stirring rpm exceeds 400, homogenization may be inhibited rather than due to the difference in specific gravity between each component of the inorganic antibacterial agent and the copper component. Then, the homogenized antibacterial mixture is applied on the printed layer 103 formed in the printing step (S2).

From several agitation tests on the antibacterial mixture made of copper powder, inorganic antibacterial agent, and UV curable resin, it was found that at least 800 rpm or more was required to homogenize the antibacterial mixture. The antibacterial mixture rotates together with the propeller inside the stirrer during stirring, and when it is rotated at 800 rpm or more, a phenomenon of agglomeration of the same components was found due to the difference in specific gravity between each component of the inorganic antibacterial agent and the copper component. In this embodiment, the first partial mixture made of UV curable resin and copper powder and the second partial mixture made of UV curable resin and inorganic antibacterial agent are separated by two stirrers and stirred at high speed, and then the homogenized first partial mixture and the first partial mixture By stirring the two-part mixture at low speed, the antibacterial effect was uniformly displayed over the entire area of the furniture panel.

After the antibacterial treatment step (S3), an additional drying step may be performed between the UV curing step (S4). In the drying step, the polypropylene film 101 coated with the antibacterial layer 104 is put into the drying chamber, and the coated polypropylene film 101 is placed on a conveyor passing the inside of the drying chamber having a temperature of 80 to 100 ° C. This is a step of drying the antibacterial layer 104 by removing moisture from the antibacterial layer 104 while passing through the drying chamber for 3 to 4 minutes by placing the antibacterial layer 104 of the film 101 facing upward.

If you place the polypropylene film coated with the antibacterial layer 104 on a flat conveyor, the uneven surface will sink evenly, and if the antibacterial layer is dried with hot air, the surface will be slightly hardened, so that an even and flat shape can be easily formed when curing in the UV curing step. In addition, after drying to remove a certain amount of moisture, curing can be made more easily by UV curing.

The drying chamber used in the drying step and the UV chamber used in the UV curing step (S4) have a polypropylene film ( 101) is directly put into the entrance of the UV chamber and quickly irradiated with UV light, the manufacturing process and time are reduced, enabling efficient work.

The antibacterial layer 104 improves the anti-scratch function because it protects the printing surface from being peeled off or scratched by the impact of the surface, so that the printing surface is not damaged and a beautiful appearance can be maintained. In addition, since the antibacterial layer 104 contains a UV curable resin, when a paint is applied to the polypropylene film 101 on which the primer layer 102 and the printing layer 103 are formed and exposed to UV light, crosslinking occurs and the strength is rapidly increased. Thus, it can be adhered and coated on the surface of the polypropylene film 101 .

After coating a paint mixed with antibacterial copper powder on a UV curable resin and curing it by irradiating UV light, the antibacterial copper powder is firmly adhered to the polypropylene film by the cured UV curable resin. Since the decrease in the effect is significantly reduced, it is possible to impart semi-permanent antibacterial power to the polypropylene film.

In the ultraviolet curing step (S4), the antibacterial layer 104 is cured by irradiating ultraviolet rays to the antibacterial layer 104 of the polypropylene film 101 dried through the inside of the drying chamber. After the dried polypropylene film 101 on which the antibacterial layer 104 is formed is put into the ultraviolet chamber, ultraviolet rays are irradiated for a short time to cure the ultraviolet curable resin contained in the antibacterial layer 104 . In this case, the wavelength of the ultraviolet rays is preferably 254 nm or 365 nm, and the ultraviolet irradiation time is preferably 3 to 10 minutes.

In the bonding step (S5), the polypropylene film having the antibacterial layer 104 cured in the ultraviolet curing step (S4) is adhered to the particle board. The manufacture of the furniture panel 100 is completed by forming the adhesive layer 105 using an adhesive on the antibacterial layer 104 of the polypropylene film 101 and press-bonding the particle board 106 on the adhesive layer 105 . do. The type and thickness of the particle board are not particularly limited.

The eco-friendly non-toxic adhesive used in the adhesion step (S5) is 100 parts by weight of ethylene-vinyl acetate copolymer emulsion, 10-20 parts by weight of fluorite, 4-8 parts by weight of bentonite, 2-3 parts by weight of activated carbon, and 1-2 parts by weight of graphite. is done The adhesive prevents the release of harmful substances from the particle board, and the adhesive itself does not emit harmful substances, so that a panel for furniture harmless to the human body can be manufactured.

Ethylene-vinyl acetate copolymer emulsion is a non-toxic material with excellent adhesion. Fluorite serves to adsorb and deodorize various harmful substances such as benzene, toluene, and xylene. Bentonite plays a role in deodorizing odors such as ammonia and toluene. Activated carbon has strong adsorption properties, so it plays a role in adsorbing gas or moisture. Graphite serves to adsorb ammonia, iodine, and phenol. If the content of each component exceeds the suggested standard range, adhesion, adsorption, and deodorization performance by a specific component may drop sharply.

In order to improve the strength or increase the thickness of the furniture panel 100 after the bonding step (S5), an eco-friendly non-toxic adhesive is additionally applied to the particle board, and then 70 to 100 After loading the furniture panels vertically, they can go through a pressing step of pressing with a pressure of 170 tons or more. At this time, if compressed with a pressure lower than 170 tons or more, proper pressure is not applied and the furniture panels 100 do not stick together properly, so there is a risk of falling off during use. There is a possibility that the panel 100 may be damaged such as cracked or broken.

The compression panel manufactured as a multi-layered furniture panel 100 through the pressing step can be used in various furniture and interior fields where wooden panels are used, such as chairs, desks, bookcases, and wardrobes.

<Example 1>

As shown in Table 1, a first partial mixture consisting of 100 parts by weight of an ultraviolet curable resin and 8 parts by weight of copper powder was stirred at 800 rpm at 100 ° C. for 15 minutes at the same time as 100 parts by weight of the ultraviolet curable resin and 8 parts by weight of the inorganic antibacterial agent. The second sub-mixture was stirred at 800 rpm at 100° C. for 15 minutes until the second sub-mixture was homogenized. Then, the antibacterial mixture paint composed of the first partial mixture and the second partial mixture was stirred at 100° C. for 3 minutes at 300 rpm.

Using an inorganic antibacterial agent consisting of 100 parts by weight of SiO ₂ , 100 parts by weight of Al ₂ O ₃ , 100 parts by weight of Ag, 100 parts by weight of Zn, and 100 parts by weight of Na, 100 parts by weight of ethylene-vinyl acetate copolymer emulsion, 15 parts by weight of fluorite , 7 parts by weight of bentonite, 2 parts by weight of activated carbon, using an adhesive consisting of 2 parts by weight of graphite, according to the same process as described above to prepare a furniture panel of Example 1.

<Example 2>

A panel was manufactured in the same manner as in Example 1 except that the stirring speed of the first partial mixture and the second partial mixture was changed to 900 rpm.

<Example 3>

A panel was manufactured in the same manner as in Example 1 except that the stirring speed of the first partial mixture and the second partial mixture was changed to 1000 rpm.

Comparative Examples 1 to 3 with respect to Examples 1 to 3 of the present invention were prepared with the compositions and composition ratios shown in Table 2 below.

<Comparative Example 1>

As shown in Table 2, unlike Examples 1 to 3 in which the first partial mixture and the second partial mixture were prepared, Comparative Example 1 was prepared by mixing 200 parts by weight of an ultraviolet curable resin and 8 parts by weight of an inorganic antibacterial agent at a time to form an antibacterial mixture. After that, the mixture was stirred at 100 °C at 800 rpm for 15 minutes. Other than that, it was prepared in the same manner as in Example 1.

<Comparative Example 2>

A panel was manufactured in the same manner as in Comparative Example 1 except that the stirring speed of the entire mixture was changed to 900 rpm.

<Comparative Example 3>

A panel was manufactured in the same manner as in Comparative Example 1 except that the stirring speed of the entire mixture was changed to 1000 rpm.

<Test Example 1>

In accordance with the KCL-FIR-1003:2018 method, an experiment was conducted to compare the antibacterial power of each of Examples 1 to 3 and Comparative Examples 1 to 3 of the present invention by manufacturing a furniture panel by the antibacterial panel manufacturing method of each. Inorganic antibacterial agents are typically effective against E. coli, and copper is effective against various bacteria such as Staphylococcus aureus and pneumococcus, so antibacterial experiments were conducted on them. This is the result of an antibacterial test against pneumococcus. After dividing the furniture panel prepared in Examples 1 to 3 and Comparative Examples 1 to 3 into 8 pieces each having a size of 10 cm in width and 10 cm in length, the antibacterial properties of each of the 4 pieces of the divided panel were tested, and then the antibacterial activity was compared. Each average value is rounded off to two decimal places.

According to Tables 3, 4, and 5, it can be seen that the furniture panels manufactured in Examples 1 to 3 have similar antibacterial activity of each piece 1 to 8 against E. coli, Staphylococcus aureus, and pneumococcus, and there is little variation.

On the other hand, in Comparative Examples 1 to 3, the antibacterial activity of the eight pieces was not constant, and a portion with strong antibacterial activity and a portion with weak antibacterial activity were distinct. This is due to the difference in specific gravity between each component of the inorganic antibacterial agent and the copper component when rotating together with the propeller inside the stirrer by adding inorganic antibacterial agent, ultraviolet curing resin, and copper to the stirrer at once when stirring the antibacterial material mixture during the furniture panel manufacturing process. This is because the phenomenon of aggregation of the same components occurs. When the same component aggregation occurs, the antibacterial activity is also not uniform because it is difficult to distribute the particles uniformly over the entire area when the paint is widely spread and coated in the antibacterial treatment step (S3) performed later.

Therefore, even if it appears that the panel is evenly mixed with the naked eye after the panel is manufactured, when the antibacterial activity is tested, it can be confirmed that the antibacterial material has a difference in the antibacterial activity for each part of the furniture panel 107 .

If the antibacterial power is unevenly dispersed in this way, bacteria can easily proliferate in the part where the antibacterial power is weak during use, which is not good hygienically. Accordingly, it can be seen that the furniture panel according to the embodiment exhibiting excellent antibacterial activity in all pieces while having little variation in antibacterial activity has superior antibacterial activity than the existing furniture panel.

According to Tables 3, 4, 5, it can be seen that Examples 1, 2, and 3 have superior average antibacterial activity than Comparative Examples 1, 2, and 3. This indicates that copper powder and inorganic antibacterial agent are evenly mixed through agitation, giving a high antibacterial activity against each bacteria while being constant throughout the surface.

<Comparative Example 4>

According to Table 6, in Comparative Example 4, 8 parts by weight of copper powder was added with respect to 100 parts by weight of the UV-curable resin, and only the first partial mixture was stirred at 100° C. at 900 rpm for 3 minutes to prepare an antibacterial mixture paint. It was manufactured in the same process as in 1.

<Comparative Example 5>

According to Table 6, in Comparative Example 5, 7 parts by weight of an inorganic antibacterial agent was added to 100 parts by weight of the UV-curable resin, and only the second partial mixture was stirred at 100 ° C. at 900 rpm for 3 minutes to prepare an antibacterial mixture paint, and the other examples It was manufactured in the same process as in 1.

According to Table 7, Comparative Example 4, which is a furniture panel containing only UV-curable resin and copper powder, has excellent antibacterial effects against Staphylococcus aureus and pneumococcus because it contains copper powder having excellent antibacterial properties against Staphylococcus aureus and pneumococcus. However, since it does not contain an inorganic antibacterial agent with excellent E. coli antibacterial activity, it can be confirmed that the E. coli antibacterial activity is lower than that of Examples 1-3. In addition, Comparative Example 5, which is a panel containing only UV-curable resin and inorganic antibacterial agent, has excellent antibacterial effect of E. coli because it contains an inorganic antibacterial agent with excellent antibacterial properties of E. coli. It can be seen that the antibacterial activity is low.

Therefore, it can be proved that it can have high antibacterial activity against E. coli, Staphylococcus aureus, and pneumococcus by including both copper powder and inorganic antibacterial agent like the furniture panel having antibacterial function according to the present invention.

<Test Example 3>

In order to measure mold resistance for Examples 1 to 3 of the present invention, the mixed fungal strain Aspergillus brasiliensis ATCC 9642, Penicillium funiculosum ATCC 11797, Chaetomium globlsum ATCC 6205, Aureobasidiu, pullulans ATCC 15233 Temperature 28.8-29.2 degrees, relative humidity 90.8 The test was conducted for 4 weeks in an environment of ~94.8%.

The antifungal grade is the O Rate in which the growth of mycelia is not recognized in the inoculated part of the test piece, the 1 Rate in which the area of the mycelial growth recognized in the inoculated part of the test piece is less than 10% of the total area, and the 2 Rate in which 10-30% of the total area is recognized. , 30~60% of 3 Rate, and 60% or more of 4 Rate. The furniture panel having an antibacterial function manufactured through the present invention showed that the mycelial growth area was less than 10% of the total area, confirming that it had excellent antibacterial properties of 1 Rate.

<Test Example 4>

In addition, as a result of conducting the indoor air quality process test of the antibacterial polypropylene sheet according to the KS K 0730:2017 method for Examples 1 to 3, substances harmful to the human body, such as Pb, Cd, Cr, Hg, and vinyl chloride monomer, were not detected. . Trace amounts of total volatile organic compounds (TVOC), toluene, and formaldehyde were detected, but total volatile organic compounds (TVOC) 0.4 mg/m ³ h, toluene 0.080 mg/m ³ h, form It is safe to use because it does not exceed 0.1 mg/L of aldehyde.

It can be seen that the antibacterial function according to the present invention does not adversely affect workers and users because it emits only a very small amount that does not emit harmful substances or harm the human body when manufacturing the furniture panel.

<Test Example 5>

For Examples 1 to 3, a test for physical impact applied to the panel was performed according to the KS F 3104:2021 method. As a result, it was found that all of Examples 1 to 3 were not abnormal in the scratch resistance horizontal 1,2,3 and scratch resistance vertical 1,2,3 parts. Therefore, it was confirmed that the furniture panel having an antibacterial function according to the present invention has high hardness. In addition, the results showed that there was no abnormality in the external impact resistance, and it was confirmed that the impact resistance was 13.0mm, 12.5mm, and 13.6mm, which was determined by the diameter of the recessed groove, and had stable impact resistance.

Preferred Examples, Comparative Examples, and Test Examples have been reviewed for the present invention. The present invention has been specifically described through Examples, Comparative Examples and Test Examples, but these are not intended to limit the present invention, but merely to demonstrate the present invention. Therefore, according to the gist of the present invention, it will be apparent to those of ordinary skill in the art that the scope of the present invention is not limited by these examples. The scope of the present invention is indicated in the claims rather than the foregoing description, and all differences within the scope equivalent thereto should be construed as being included in the present invention.

100 … antibacterial panel
101 … polypropylene film
102 … primer layer
103 … print layer
104 … antibacterial layer
105 … adhesive layer
106 … particle board
107 … antibacterial film

Claims (9)

A method for manufacturing a furniture panel having an antibacterial function, the method comprising:
A priming step of forming a primer layer on the front and back surfaces of the polypropylene film by applying a primer to each of the front and rear surfaces of the polypropylene film;
A printing step of forming a printing layer on the primer layer using a printer on the primer layer formed on the front surface of the polypropylene film;
an antibacterial treatment step of forming an antibacterial layer on the printed layer by applying an antibacterial mixture paint containing copper powder, an inorganic antibacterial agent, and an ultraviolet curable resin on the printed layer;
UV curing step of curing the antibacterial layer by irradiating ultraviolet (UV) to the antibacterial layer; and
Adhesive step of adhering the polypropylene film having the cured antibacterial layer to the particle board,
The antibacterial treatment step
homogenizing the first partial mixture by stirring the first partial mixture consisting of an ultraviolet curable resin and copper powder;
homogenizing the second partial mixture by stirring a second partial mixture consisting of an ultraviolet curable resin and an inorganic antibacterial agent;
homogenizing the antimicrobial mixture paint by stirring the antimicrobial mixture paint composed of the homogenized first partial mixture and the homogenized second partial mixture; and
The method of manufacturing a furniture panel comprising the step of forming the antibacterial layer on the printed layer by applying the homogenized antibacterial mixture paint on the printed layer. delete The method of claim 1,
In the step of homogenizing the first partial mixture, the first partial mixture consisting of 100 parts by weight of the UV curable resin and 7 to 9 parts by weight of the copper powder is put into the first stirrer and stirred until the first partial mixture is homogenized,
The step of homogenizing the second partial mixture is characterized in that the second partial mixture consisting of 100 parts by weight of the UV curable resin and 4 to 9 parts by weight of the inorganic antibacterial agent is added to the second stirrer and stirred until the second partial mixture is homogenized. A method for manufacturing a furniture panel. 4. The method of claim 3,
In the step of homogenizing the first partial mixture, the first partial mixture is added to the first stirrer and stirred at 800 to 1000 rpm for 15 to 20 minutes,
In the homogenizing of the second partial mixture, the second partial mixture is added to the second stirrer and stirred at 800 to 1000 rpm for 15 to 20 minutes,
The step of homogenizing the antibacterial mixture paint is a method of manufacturing a furniture panel, characterized in that stirring the antibacterial mixture at 300 to 400 rpm for 3 to 4 minutes. The method of claim 1,
The inorganic antibacterial agent is SiO ₂ , Al ₂ O ₃ , Ag, Zn, a method of manufacturing a furniture panel having an antibacterial function, characterized in that at least two or more selected from the group consisting of Na. 6. The method of claim 5,
The inorganic antibacterial agent has an antibacterial function, characterized in that it contains 100 parts by weight of SiO ₂ , 90 to 110 parts by weight of Al ₂ O ₃ , 90 to 110 parts by weight of Ag, 90 to 110 parts by weight of Zn, and 90 to 110 parts by weight of Na A method of manufacturing a panel for furniture. The method of claim 1,
The adhesive used in the bonding step includes an ethylene-vinyl acetate copolymer emulsion, fluorite, bentonite, activated carbon, and graphite. 8. The method of claim 7,
The adhesive comprises 100 parts by weight of an ethylene-vinyl acetate copolymer emulsion, 10 to 20 parts by weight of fluorite, 4 to 8 parts by weight of bentonite, 2 to 3 parts by weight of activated carbon, and 1 to 2 parts by weight of graphite. A method for manufacturing a panel for furniture. A panel for furniture manufactured according to the manufacturing method of claim 1.

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