A Product mathod and Product system of Visible Light Activity Photocatalyst type Melamine Resin Sheet

Abstract

The method and apparatus for manufacturing a visible light-activated photocatalytic melamine resin sheet according to the present invention comprises supplying a base paper (pattern paper) from a base roll in which a pattern paper printed with a specific or non-specific shape is wound in a roll shape (base roll supply step or base roll supply device part), passing the supplied base paper through melamine resin to impregnate the surface (outer surface) of the base paper with melamine resin (melamine resin impregnation step or melamine resin impregnation part), drying the melamine resin-impregnated base paper with melamine resin impregnated on its surface (outer surface) while passing it through (drying step or drying device part), cooling the dried melamine resin-impregnated base paper while passing it through (cooling step or cooling device part), and cutting the cooled melamine resin-impregnated base paper into a predetermined size (length) (cutting part or cutting device part) to form a melamine resin sheet (product completion step), wherein the supplied base paper is passed through melamine resin and on the surface (outer surface) of the base paper After impregnating the melamine resin (melamine resin impregnation step or melamine resin impregnation part), a process of coating a visible light-activated photocatalyst solution on one side (surface or back side) of the base paper impregnated with melamine resin on the surface (outer surface) (visible light-activated photocatalyst coating step or visible light-activated photocatalyst coating device part) can be further performed to produce a visible light-activated photocatalyst type melamine resin sheet in which a visible light-activated photocatalyst solution is coated on one side (surface or back side) of the base paper impregnated with melamine resin on the surface (outer surface). The present invention allows for the formation of a low-cost visible light-activated photocatalyst melamine resin composition by adding and mixing a visible light-activated photocatalyst material in a certain ratio to a melamine resin (thermosetting plastic) produced by a condensation reaction between melamine and formaldehyde, and by depositing (coating) the low-cost visible light-activated photocatalyst melamine resin composition thus formed onto the surface of a sheet, thereby enabling the visible light-activated photocatalyst material added and mixed to the melamine resin (thermosetting plastic) to react with light (sunlight and light emitted from electric lights) to improve antibacterial function, thereby obtaining a visible light-activated photocatalyst melamine resin sheet. The present invention enables various indoor furniture and interior materials to have antibacterial functions at a low cost by depositing (adhering) a Visible Light Activity Photocatalyst type Melamine Resin Sheet, manufactured according to the present invention, onto the surface of panels used for various indoor furniture and interior materials, thereby improving and maintaining good indoor air quality (IAQ).

Description

Technology Field

[0001] The present invention relates to a method and apparatus for manufacturing a visible light-active photocatalytic melamine resin sheet.

[0002] To explain this in more detail, a base paper (pattern paper) is supplied from a base roll in which a pattern paper printed with a specific or non-specific shape is wound in a roll shape (base roll supply step or base roll supply device part); the supplied base paper is passed through melamine resin to impregnate the surface (outer surface) of the base paper with melamine resin (melamine resin impregnation step or melamine resin impregnation part); the melamine resin-impregnated base paper with melamine resin impregnated on its surface (outer surface) is dried while passing through (drying step or drying device part); the dried melamine resin-impregnated base paper is cooled while passing through (cooling step or cooling device part); and the cooled melamine resin-impregnated base paper is cut to a predetermined size (length) (cutting part or cutting device part) to form a melamine resin sheet (product completion step), wherein the supplied base paper is passed through melamine resin to impregnate the surface (outer surface) of the base paper with melamine resin (melamine resin impregnation step The present invention aims to provide a method and apparatus for manufacturing a visible light-activated photocatalytic type melamine resin sheet, wherein a visible light-activated photocatalytic liquid is coated on one side (surface or back side) of a base paper impregnated with melamine resin on the surface (outer side) after the melamine resin impregnation part (or melamine resin impregnation part), thereby enabling the production of a visible light-activated photocatalytic type melamine resin sheet in which the visible light-activated photocatalytic liquid is coated on one side (surface or back side) of a base paper impregnated with melamine resin on the surface (outer side).

[0003] The present invention provides a method and apparatus for manufacturing a visible light-activated photocatalytic melamine resin sheet, wherein a visible light-activated photocatalytic material is added and mixed in a certain ratio to a melamine resin (thermosetting plastic) produced by a condensation reaction between melamine and formaldehyde to form a low-cost visible light-activated photocatalytic melamine resin composition; and wherein the low-cost visible light-activated photocatalytic melamine resin composition thus formed is deposited (coated) on the surface of a sheet, thereby enabling the visible light-activated photocatalytic material added and mixed to the melamine resin (thermosetting plastic) to react with light (sunlight and light emitted from electric lights) to obtain an antibacterial function.

[0004] By depositing (adhering) a composition produced by the method and apparatus for manufacturing a visible light-active photocatalyst type melamine resin sheet according to the present invention onto the surface of panels used for various indoor furniture and interior materials, the various indoor furniture and materials can have antibacterial functions at a low cost, thereby enabling the improvement and maintenance of indoor air quality (IAQ). Background Technology

[0006] In order for various panels, such as sandwich panels used for various indoor furniture and interior materials, to possess various functions, a functional resin is applied to the surface of the panel or a sheet is deposited (adhered).

[0007] Melamine resin is known to be a functional resin applied to the surface of a panel and is related to the present invention.

[0008] Melamine resin is a thermosetting plastic material produced by the condensation reaction between melamine and formaldehyde. It is hard, heat-resistant, and highly stable against scratches and chemicals. In particular, its colorless and transparent nature is advantageous for various colorings, and due to its high friction resistance and thermal stability, it is widely used in construction, furniture, and tableware.

[0009] One of the main uses of melamine resin is the manufacture of a product family called high-pressure or low-pressure laminates. When paper impregnated with melamine resin is processed at high temperature and high pressure, the cellulose of the paper and the melamine resin combine to produce materials such as flooring, tiles, and furniture tops that are hard and glossy.

[0010] When manufacturing a high-pressure laminate using melamine resin, a composition formed by mixing water-soluble melamine-formaldehyde resin, paper (gravure-printed decorative paper), a curing agent, and a release agent was used.

[0011] Meanwhile, methods and apparatus for manufacturing eco-friendly antibacterial melamine resin sheets using the melamine resin described above are known in Korea, including Registered Patent No. 10-1537769 (Eco-friendly antibacterial impregnated paper and method of manufacturing the same), Registered Patent No. 10-2290293 (Melamine sheet having antibacterial and antifungal functions, method of manufacturing the same and method of construction), and Registered Patent No. 10-2300039 (Method of manufacturing eco-friendly highly antibacterial LPM containing copper and LPM manufactured by the method).

[0012] In the above, Registered Patent No. 10-1537769 (eco-friendly antibacterial impregnated paper and method of manufacturing the same) is formed by laminating a first impregnated layer (urea resin) and a second impregnated layer (melamine resin) on both sides (surface and back) of a paper substrate layer, respectively, and mixing an inorganic antibacterial agent (1 to 20 weight%) with the melamine resin, thereby obtaining antibacterial performance simply by means of the inorganic antibacterial agent.

[0013] Registered Patent No. 10-2290293 (Melamine sheet having antibacterial and antifungal functions, method of manufacturing the same, and method of construction) is a paper impregnated with an impregnation solution mixed with octylisothiazolinone and dichlorooctylisothiazolinone in a melamine resin, and is designed to obtain antibacterial, antifungal, stain-resistant, and fingerprint-resistant properties through the octylisothiazolinone and dichlorooctylisothiazolinone added to the melamine resin.

[0014] Registered Patent No. 10-2300039 (Method for manufacturing an eco-friendly highly antibacterial LPM containing copper and LPM manufactured by the method) is produced by first impregnating a base paper with a first impregnation solution (water-dispersible urethane resin + water + plasticizer + release agent) and secondly impregnating it with a second impregnation solution (water-dispersible urethane resin + water + copper + plasticizer + release agent), and then forming a coating film on the surface with a coating agent (water-soluble lacquer), thereby obtaining antibacterial properties simply by the copper added to the second impregnation solution. The problem to be solved

[0016] The present invention aims to provide a method and apparatus for manufacturing a visible light-activated photocatalytic melamine resin sheet that are further developed to resolve the aforementioned problems and drawbacks.

[0017] The present invention supplies a base paper (pattern paper) from a base roll in which a pattern paper printed with a specific or non-specific shape is wound in a roll shape (base roll supply step or base roll supply device part), passes the supplied base paper through melamine resin to impregnate the surface (outer surface) of the base paper with melamine resin (melamine resin impregnation step or melamine resin impregnation part), dries the melamine resin-impregnated base paper with melamine resin impregnated on its surface (outer surface) while passing it through (drying step or drying device part), cools the dried melamine resin-impregnated base paper while passing it through (cooling step or cooling device part), and cuts the cooled melamine resin-impregnated base paper into a predetermined size (length) (cutting part or cutting device part) to form a melamine resin sheet (product completion step), wherein the supplied base paper is passed through melamine resin to impregnate the surface (outer surface) of the base paper with melamine resin (melamine resin impregnation step or The purpose is to provide a method and apparatus for manufacturing a visible light-activated photocatalytic type melamine resin sheet, which can be manufactured by further performing a process (visible light-activated photocatalytic coating step or visible light-activated photocatalytic coating apparatus part) of coating a visible light-activated photocatalytic liquid on one side (surface or back side) of a base paper impregnated with melamine resin on the surface (outer surface) after the melamine resin impregnation part, thereby enabling the manufacture of a visible light-activated photocatalytic type melamine resin sheet in which a visible light-activated photocatalytic liquid is coated on one side (surface or back side) of a base paper impregnated with melamine resin on the surface (outer surface).

[0018] Another objective of the present invention is to provide a method and apparatus for manufacturing a visible light-activated photocatalytic melamine resin sheet, wherein a visible light-activated photocatalytic melamine resin composition can be formed in a low-cost form by adding and mixing a visible light-activated photocatalytic material in a certain ratio to a melamine resin (thermosetting plastic) produced by a condensation reaction between melamine and formaldehyde; and wherein a visible light-activated photocatalytic melamine resin sheet can be obtained in which the visible light-activated photocatalytic material added and mixed to the melamine resin (thermosetting plastic) reacts with light (sunlight and light emitted from electric lights) to improve antibacterial function by depositing (coating) the low-cost visible light-activated photocatalytic melamine resin composition formed in this manner onto the surface of a sheet.

[0019] Another objective of the present invention is to provide a method and apparatus for manufacturing a visible light activity photocatalyst type melamine resin sheet, wherein the composition produced by the present invention is deposited (adhered) onto the surface of panels used for various indoor furniture and interior materials, thereby enabling various indoor furniture and interior materials to possess antibacterial functions at a low cost and thereby improving and maintaining the indoor air quality (IAQ). means of solving the problem

[0021] The above and other objectives of the present invention are,

[0022] In a manufacturing method and manufacturing apparatus, a base paper (pattern paper) is supplied from a base roll in which a pattern paper printed with a specific or non-specific pattern is wound in a roll shape (base roll supply step or base roll supply device part), the supplied base paper is passed through melamine resin to impregnate the surface (outer surface) of the base paper with melamine resin (melamine resin impregnation step or melamine resin impregnation part), the base paper impregnated with melamine resin on its surface (outer surface) is dried while passing through (drying step or drying device part), the dried base paper impregnated with melamine resin is cooled while passing through (cooling step or cooling device part), and the cooled base paper impregnated with melamine resin is cut to a predetermined size (length) (cutting part or cutting device part) to form a melamine resin sheet (product completion step);

[0023] This is achieved by a method and apparatus for manufacturing a visible light-activated photocatalytic type melamine resin sheet, characterized by: passing the supplied base paper through a melamine resin to impregnate the surface (outer surface) of the base paper with melamine resin (melamine resin impregnation step or melamine resin impregnation part), and then further performing a process of coating a visible light-activated photocatalytic liquid on one side (surface or back surface) of the base paper impregnated with melamine resin (visible light-activated photocatalytic coating step or visible light-activated photocatalytic coating device part) to produce a visible light-activated photocatalytic type melamine resin sheet in which a visible light-activated photocatalytic liquid is coated on one side (surface or back surface) of the base paper impregnated with melamine resin on the surface (outer surface). Effects of the invention

[0025] The present invention supplies a base paper (pattern paper) from a base roll in which a pattern paper printed with a specific or non-specific shape is wound in a roll shape (base roll supply step or base roll supply device part), passes the supplied base paper through melamine resin to impregnate the surface (outer surface) of the base paper with melamine resin (melamine resin impregnation step or melamine resin impregnation part), dries the melamine resin-impregnated base paper with melamine resin impregnated on its surface (outer surface) while passing it through (drying step or drying device part), cools the dried melamine resin-impregnated base paper while passing it through (cooling step or cooling device part), and cuts the cooled melamine resin-impregnated base paper into a predetermined size (length) (cutting part or cutting device part) to form a melamine resin sheet (product completion step), wherein the supplied base paper is passed through melamine resin to impregnate the surface (outer surface) of the base paper with melamine resin (melamine resin impregnation step or The present invention aims to provide a method and apparatus for manufacturing a visible light-activated photocatalytic type melamine resin sheet, wherein a visible light-activated photocatalytic liquid is coated on one side (surface or back side) of a base paper impregnated with melamine resin on the surface (outer surface) after the melamine resin impregnation part (visible light-activated photocatalytic part), thereby enabling the production of a visible light-activated photocatalytic type melamine resin sheet in which the visible light-activated photocatalytic liquid is coated on one side (surface or back side) of a base paper impregnated with melamine resin on the surface (outer surface).

[0026] The present invention allows for the formation of a low-cost visible light-activated photocatalyst melamine resin composition by adding and mixing a visible light-activated photocatalyst material in a certain ratio to a melamine resin (thermosetting plastic) produced by a condensation reaction between melamine and formaldehyde, and by depositing (coating) the low-cost visible light-activated photocatalyst melamine resin composition thus formed onto the surface of a sheet, thereby enabling the visible light-activated photocatalyst material added and mixed to the melamine resin (thermosetting plastic) to react with light (sunlight and light emitted from electric lights) to improve antibacterial function, thereby obtaining a visible light-activated photocatalyst melamine resin sheet.

[0027] The present invention enables various indoor furniture and interior materials to have antibacterial functions at a low cost by depositing (adhering) a Visible Light Activity Photocatalyst type Melamine Resin Sheet, manufactured according to the present invention, onto the surface of panels used for various indoor furniture and interior materials, thereby improving and maintaining good indoor air quality (IAQ). Brief explanation of the drawing

[0029] FIG. 1 is a schematic diagram showing the manufacturing process of a method for manufacturing a visible light-active photocatalytic type melamine resin sheet according to the present invention. FIG. 2 is a schematic diagram showing an apparatus for manufacturing a visible light-active photocatalytic type melamine resin sheet according to the present invention. Specific details for implementing the invention

[0030] The above and other objects and features of the present invention will be more clearly understood from the following detailed description based on the attached drawings.

[0031] The attached drawings, FIGS. 1 and 2, specifically show a method and apparatus for manufacturing a visible light-activated photocatalytic type melamine resin sheet according to the present invention. FIGS. 1 is a schematic diagram showing the manufacturing process of the method (1) for manufacturing a visible light-activated photocatalytic type melamine resin sheet according to the present invention, and FIGS. 2 is a schematic diagram showing the apparatus (100) for manufacturing a visible light-activated photocatalytic type melamine resin sheet according to the present invention.

[0032] First, the manufacturing process of the method (1) for manufacturing a visible light-activated photocatalytic melamine resin sheet according to the present invention, as illustrated in FIG. 1, will be explained.

[0033] The method (1) for manufacturing a visible light-activated photocatalytic melamine resin sheet according to the present invention comprises a substrate roll supply step (10) → a melamine resin impregnation step (20) → a visible light-activated photocatalytic coating step (30) → a drying step (40) → a cooling step (50) → a cutting step (60) → a product completion step (70).

[0034] The substrate roll supply step (10) is a step of supplying the original paper (111), i.e., the pattern paper, from a substrate roll in which a pattern paper printed with a specific or unspecified shape is wound in a roll shape.

[0035] The base paper used as the above-mentioned base paper (111) may include commonly known decorative paper, and the decorative paper is generally a paper of high basis weight (50 g / m²) containing a certain amount (15 weight%) or more of ash, and includes printed paper with printing and unprinted paper.

[0036] Considering the method (1) for manufacturing a visible light-activated photocatalytic melamine resin sheet according to the present invention, a decorative paper can be considered the most preferred substrate type, and examples of decorative paper include Decorative Paper, Underlay Paper, and Overlay Paper.

[0037] The melamine resin impregnation step (20) is a step of passing the supplied base paper through melamine resin to impregnate the surface (outer surface) of the base paper with melamine resin (122).

[0038] The above melamine resin (122; Melamine Resin) is a low-pressure melamine laminate formed by mixing 50 to 62 parts by weight of water-soluble melamine-formaldehyde resin, 35 to 46 parts by weight of paper (gravure printed decorative paper), 0.1 to 0.5 parts by weight of hardener, 0.1 to 0.5 parts by weight of release agent, and 5 to 10 parts by weight of water (H2O) added for viscosity control.

[0039] The above melamine resin (122) is a thermosetting plastic material produced by a condensation reaction between melamine and formaldehyde. It is known to be hard, heat-resistant, and highly resistant to scratches and chemicals. In particular, its colorless and transparent properties are advantageous for various colorings, and it is known to have high friction resistance and thermal stability.

[0040] Since the materials and composition ratios forming the melamine resin (10) as described above are technical concepts that are commonly known and widely utilized, further detailed explanations regarding them are omitted.

[0041] The visible light-activated photocatalyst coating step (30) is a step of passing the supplied base paper through melamine resin to impregnate the surface (outer surface) of the base paper with melamine resin, and then coating the visible light-activated photocatalyst liquid (132) on one side (surface or back surface) of the base paper impregnated with melamine resin.

[0042] As described above, the visible light-activated photocatalytic liquid (132) used in the melamine resin impregnation step (20) is formed by mixing a certain amount of a visible light-activated photocatalytic material with melamine resin {122; Melamine Resin; as a low pressure melamine laminate, water-soluble melamine-formaldehyde resin; 50 to 62 parts by weight, paper (gravure printed decorative paper); 35 to 46 parts by weight, hardener; 0.1 to 0.5 parts by weight, release agent; 0.1 to 0.5 parts by weight, water (H2O) added for viscosity control; 5 to 10 parts by weight}.

[0043] It is preferable to mix 0.3 to 10 parts by weight of a visible light-activated photocatalytic material with respect to the total weight of the melamine resin (122). If too little visible light-activated photocatalytic material is added, the visible light-activated photocatalytic function is weakened, whereas if too much visible light-activated photocatalytic material is added, the visible light-activated photocatalytic function is excessively activated, resulting in wasted visible light-activated photocatalytic material.

[0044] The drying step (40) is a step of drying by passing through a melamine resin impregnated and visible light-activated photocatalyst coated paper, which has melamine resin (122) impregnated on the surface (outer surface) and a visible light-activated photocatalyst liquid (132) coated on one side (surface or back surface).

[0045] The drying step (40) is performed by passing through an oven (composed of a fan and a radiator) maintained at, for example, an infrared lamp or a predetermined temperature (preferably 150 to 200°C). Since the above drying method is a technical method widely known and commonly practiced in the industry, a detailed description of the technical configuration and drying method is omitted.

[0046] The cooling step (50) is a step of cooling the dried melamine resin-impregnated and visible light-activated photocatalytic coated base paper by passing it through a cooling zone, for example, consisting of a cooling roller and a fan.

[0047] The cutting step (60) is completed by cutting (cutting) the cooled melamine resin impregnated base paper and the visible light-activated photocatalytic coated base paper into a certain size (length) using a conventional cutting device to produce a visible light-activated photocatalytic type melamine resin sheet (200).

[0048] The product completion stage (70) completes the product, i.e., the photocatalytic melamine resin sheet (200), by cutting (cutting) it to a certain size in the cutting stage (60).

[0050] Next, the process of manufacturing a photocatalytic melamine resin sheet (200) using the visible light-activated photocatalytic melamine resin sheet manufacturing apparatus (100) according to the present invention, as illustrated in FIG. 2, is described.

[0051] The visible light-activated photocatalytic type melamine resin sheet manufacturing apparatus (100) according to the present invention, illustrated in FIG. 2, consists of a substrate roll supply device (110) → melamine resin impregnation device (120) → visible light-activated photocatalytic coating device section (130) → drying device section (140) → cooling device section (150) → cutting device section (160) → product support frame (170).

[0052] The material roll supply unit (110) is a device unit that supplies the original paper (111), i.e., the shaped paper, from a material roll in which a shaped paper printed with a specific or unspecified shape is wound in a roll shape.

[0053] The base paper used as the above-mentioned base paper (111) may include commonly known decorative paper, and the decorative paper is generally a paper of high basis weight (50 g / m²) containing a certain amount (15 weight%) or more of ash, and includes printed paper with printing and unprinted paper.

[0054] The melamine resin impregnation device (120) is a device that passes the supplied paper through the melamine resin to impregnate the surface (outer surface) of the paper with melamine resin (122).

[0055] A plurality of guide rollers (125) are installed inside an impregnation tank (121) filled with melamine resin (122), and the installed guide rollers (125) are maintained in a state of being impregnated with melamine resin (122). As the base paper (111) supplied from the base roll supply unit (110) passes through the lower end of the guide rollers (125) installed inside the impregnation tank (121), the melamine resin (122) is impregnated on the outer surface of the base paper (111), and the base paper (111) with the melamine resin (122) impregnated on its outer surface is raised by an idler (126) installed on the upper discharge side of the impregnation tank (121).

[0056] The above melamine resin (122; Melamine Resin) is a low-pressure melamine laminate formed by mixing 50 to 62 parts by weight of water-soluble melamine-formaldehyde resin, 35 to 46 parts by weight of paper (gravure printed decorative paper), 0.1 to 0.5 parts by weight of hardener, 0.1 to 0.5 parts by weight of release agent, and 5 to 10 parts by weight of water (H2O) added for viscosity control.

[0057] The visible light-activated photocatalyst coating device (130) is a device that passes the supplied paper through a melamine resin to impregnate the surface (outer surface) of the paper with the melamine resin, and then coats the visible light-activated photocatalyst liquid (132) onto one side (surface or back surface) of the paper on which the melamine resin is impregnated (outer surface).

[0058] The above-mentioned visible light-activated photocatalyst coating device (130) is configured such that a coating roller (135) is installed as an axis inside a coating tank (131) filled with a visible light-activated photocatalyst liquid (132) and rotated at a constant speed, so that the lower side of the coating roller (135) is immersed in the visible light-activated photocatalyst liquid (132) and the upper side of the coating roller (135) protrudes above the visible light-activated photocatalyst liquid (132), and a paper (111) impregnated with melamine resin (122) on its outer surface is conveyed (passed) while closely contacting the outer periphery (upper surface) of the coating roller (135).

[0059] When the coating roller (135) rotates, the visible light-activated photocatalytic liquid (132) is continuously applied to the outer edge of the coating roller (135), and when the base paper (111) impregnated with melamine resin (122) on its outer surface passes through the outer edge (upper surface) of the coating roller (135) in the visible light-activated photocatalytic coating device (130), the visible light-activated photocatalytic liquid (132) that is continuously applied to the outer edge of the coating roller (135) is transferred to the lower surface of the base paper (111) and applied.

[0060] In particular, a coating guide roller (136) is installed on the upper vertical centerline of the coating roller (135), and the outer surface of the coating guide roller (136) is installed so as to be connected to the outer surface of the coating roller (135). By installing the coating guide roller (136) on the upper side of the coating roller (135) in this manner, when the base paper (111) coated with a visible light-activated photocatalytic liquid (132) on its bottom surface passes the upper side of the coating roller (135), the base paper (111) is pressed firmly from the upper side of the coating roller (135), thereby allowing the visible light-activated photocatalytic liquid (132) coated on the bottom surface of the base paper to be uniformly spread and applied.

[0061] The above visible light-activated photocatalyst liquid (132) used in the melamine resin impregnation step (20) is formed by mixing a certain amount of a visible light-activated photocatalyst material with melamine resin {122; Melamine Resin; as a low pressure melamine laminate, water-soluble melamine-formaldehyde resin; 50 to 62 parts by weight, paper (gravure printed decorative paper); 35 to 46 parts by weight, hardener; 0.1 to 0.5 parts by weight, release agent; 0.1 to 0.5 parts by weight, water (H2O) added for viscosity control; 5 to 10 parts by weight} as described above.

[0062] The drying device part (140) is a device part that dries a melamine resin impregnated and visible light-activated photocatalyst coated paper (111) by passing it through, in which melamine resin (122) is impregnated on the surface (outer surface) and visible light-activated photocatalyst liquid (132) is coated on one side (surface or back surface).

[0063] The drying device section (140) dries the melamine resin impregnated and visible light-activated photocatalytic coated base paper (111) by passing it through, for example, an infrared lamp or an oven (composed of a fan and a radiator) maintained at a predetermined temperature (preferably 150 to 200°C). Since the above drying device and drying method are technologies widely known and commonly practiced in the industry, a detailed description of the technical configuration and drying method is omitted.

[0064] The cooling device section (150) is a device section that cools the dried melamine resin-impregnated and visible light-activated photocatalytic coated base paper by passing it through a cooling zone, for example, consisting of a cooling roller and a fan. Since the device and method of cooling using a cooling roller and a fan are widely known and commonly practiced in the industry, a detailed description of the technical configuration and cooling method is omitted.

[0065] The cutting device section (160) is a device section that cuts the cooled melamine resin impregnated base paper and the visible light-activated photocatalytic coated base paper into a certain size (length) using a conventional cutting device to form a visible light-activated photocatalytic type melamine resin sheet (200).

[0066] The product support frame (170) receives the finished product, i.e., the photocatalytic melamine resin sheet (200), which has been cut (sliced) to a certain size by the cutting device unit (160), and transfers it to the next process (e.g., packaging and storage stage), thereby completing the manufacturing process.

[0067] By carrying out the method (1) for manufacturing a visible light-activated photocatalytic melamine resin sheet and the apparatus (100) for manufacturing a visible light-activated photocatalytic melamine resin sheet according to the present invention as described above, it is possible to manufacture a visible light-activated photocatalytic melamine resin sheet (200) in which a visible light-activated photocatalytic liquid is coated on one side (surface or back side) of a base paper (decorative paper) in which melamine resin is impregnated on the surface (outer surface).

[0068] In particular, the visible light-activated photocatalytic liquid (132) according to the present invention, which is used in the visible light-activated photocatalytic coating step (30) and the visible light-activated photocatalytic coating device part (130) of the visible light-activated photocatalytic melamine resin sheet manufacturing method (1) and the visible light-activated photocatalytic melamine resin sheet manufacturing device (100) according to the present invention, is prepared by adding the above-mentioned visible light-activated photocatalytic material in a certain ratio to the melamine resin (122) produced by a condensation reaction between melamine and formaldehyde, and mixing using a conventional mixing device (not specifically illustrated).

[0069] The mixing device (not specifically illustrated) that mixes a visible light-activated photocatalytic material added to the above melamine resin (122) in a certain ratio is identical to the mixing device used when molding and manufacturing a low-pressure melamine laminate, so a specific description thereof is omitted.

[0070] In addition, as a visible light-activated photocatalytic material added to the melamine resin in the visible light-activated photocatalytic liquid (132) according to the present invention, any one of the visible light-activated photocatalytic particles (Published Patent No. 10-2018-0086038), visible light-activated photocatalytic coating composition (Registered Patent No. 10-1857831), and visible light-activated photocatalytic coating composition (Registered Patent No. 10-2101220) that have been developed, known, and utilized by others may be cited.

[0071] For composing the visible light-active photocatalytic type melamine resin composition (100) according to the present invention, the mixing ratio of the melamine resin (10) and the visible light-active photocatalytic material (20) is preferably 0.2 to 10 parts by weight of the visible light-active photocatalytic material (20) relative to the total weight of the melamine resin (10).

[0072] As described above, by mixing 0.2 to 10 parts by weight of a visible light-activated photocatalyst material (20) with respect to the total weight of the melamine resin (10), it is possible to effectively perform the function of a visible light-activated photocatalyst that responds to visible light.

[0073] The above-mentioned visible light-activated photocatalyst particles developed by others (Published Patent No. 10-2018-0086038) are visible light-activated photocatalyst particles comprising tungsten oxide particles supported with copper particles; they are manufactured by a method for manufacturing visible light-activated photocatalyst particles comprising preparing a tungsten oxide particle dispersion solution, adjusting the pH of the tungsten oxide particle dispersion solution to 7 to 11, mixing a supporting raw material containing a copper precursor into the pH-adjusted tungsten oxide particle dispersion solution, and supporting copper particles on the tungsten oxide particles.

[0074] The above-mentioned visible light-activated photocatalyst particles (Published Patent No. 10-2018-0086038) have excellent deodorizing and antibacterial effects.

[0075] In addition, a visible light-activated photocatalytic coating composition (Registered Patent No. 10-1857831) comprises a TiO2 amorphous sol and visible light-activated photocatalytic particles, wherein the TiO2 amorphous sol is prepared by a sol-gel method through dehydration and dealolysis reactions using an alcohol-based solvent.

[0076] The above alcohol-based solvent is selected from the group consisting of isopropyl alcohol, ethanol, methanol, butanol, and combinations thereof (at least one); the above visible light-activated photocatalytic material particles are porous metal oxide particles supporting a visible light-activating metal containing pores; and the above porous metal oxide particles comprise at least one selected from titanium oxide, tungsten oxide, zinc oxide, niobium oxide, and combinations thereof.

[0077] A visible light-activating metal comprising at least one metal selected from tungsten, chromium, vanadium, molybdenum, copper, iron, cobalt, manganese, nickel, platinum, gold, cerium, cadmium, zinc, magnesium, calcium, strontium, barium, radium, and combinations thereof, or the visible light-activating metal in the form of an oxide thereof is supported on porous metal oxide particles.

[0078] The above visible light-activated photocatalyst particles are included in a weight ratio of the porous metal oxide to the sum of the visible light-activating metal and the visible light-activating metal oxide of 99.9:0.1 to 99:1; and are formed by including 100 parts by weight of the above visible light-activated photocatalyst particles and 20 to 100 parts by weight of the above TiO2 amorphous sol.

[0079] A visible light-activated photocatalyst layer formed using a visible light-activated photocatalyst coating composition (Registered Patent No. 10-1857831) responds to visible light and has excellent photocatalytic efficiency.

[0080] In addition, a visible light-activated photocatalyst coating composition (Registered Patent No. 10-2101220) comprises a visible light-activated photocatalyst material and an aqueous solvent composed of 100% by weight of water, wherein the visible light-activated photocatalyst material comprises a porous first metal oxide (tungsten) having a specific surface area of ​​50 m² / g to 500 m² / g; and a second metal particle (platinum) supported on the porous first metal oxide, and is formed into a particle containing 4% to 10% by weight of the visible light-activated photocatalyst material, thereby realizing visible light activation performance and excellent photocatalyst efficiency.

[0082] (Example)

[0083] Example 1: Visible light activity Photocatalytic type Manufacturing of melamine resin sheet (200)

[0084] A melamine resin (122) was prepared by stirring and mixing 60 parts by weight of water-soluble melamine-formaldehyde resin, 34.5 parts by weight of paper (gravure printed decorative paper), 0.3 parts by weight of hardener, 0.2 parts by weight of release agent, and 5 parts by weight of water (H2O).

[0085] A portion of the melamine resin (122) manufactured as described above was filled into the impregnation tank (121) of the melamine resin impregnation section (120).

[0086] 5 parts by weight of a visible light-activated photocatalytic coating composition (Registered Patent No. 10-1857831) as a visible light-activated photocatalytic material was added to the remaining melamine resin (122) relative to the total weight of the melamine resin (122), and the mixture was stirred with a mixing device (not specifically shown) to produce a visible light-activated catalyst liquid (132), which was then filled into the coating tank (131) of the visible light-activated photocatalytic coating device (130).

[0087] In the material roll supply step (10) and the material roll supply device part (110), the original paper (111), i.e., the shaped paper, was supplied from a material roll in which a shaped paper with a specific or unspecified shape printed on it was wound into a roll shape.

[0088] In the melamine resin impregnation step (20) and the melamine resin impregnation device part (120), the base paper supplied is passed through the melamine resin to impregnate the surface (outer surface) of the base paper with melamine resin (122).

[0089] In particular, the original paper (111) supplied from the melamine resin impregnation device (120) passes through the lower end of the guide roller (125) installed inside the impregnation tank (121), and after the melamine resin (122) is impregnated on the outer surface of the original paper (111), it is raised by the idler (126).

[0090] In the visible light-activated photocatalyst coating step (30) and the visible light-activated photocatalyst coating device part (130), a visible light-activated photocatalyst liquid (132) was coated on one side (surface or back side) of the original paper impregnated with melamine resin on the surface (outer surface).

[0091] In particular, when the base paper (111) impregnated with melamine resin (122) on its outer surface in the visible light-activated photocatalyst coating device (130) passes in contact with the outer periphery (upper surface) of the coating roller (135), the visible light-activated photocatalyst liquid (132) that is continuously adhered to the outer periphery of the coating roller (135) is uniformly transferred and applied to the underside of the base paper (111).

[0092] In the drying step (40) and drying device part (140), the melamine resin impregnated and visible light-activated photocatalyst coated base paper (111), which has melamine resin (122) impregnated on the surface (outer surface) and visible light-activated photocatalyst liquid (132) applied on one side (surface or back surface), was dried by passing it through an oven (composed of a fan and a radiator) maintained at a predetermined temperature (preferably 180°C).

[0093] The melamine resin impregnated and visible light-activated photocatalytic coated base paper dried in the cooling step (50) and cooling device part (150) was passed through a cooling zone consisting of a cooling roller and a fan to be cooled.

[0094] In the cutting step (60) and cutting device part (160), the melamine resin impregnated base paper and the visible light-activated photocatalytic base paper that have been cooled are cut (sliced) to a certain size (length) using a conventional cutting device to form a visible light-activated photocatalytic type melamine resin sheet (200).

[0095] The manufacturing process is completed by receiving the finished product, i.e., the photocatalytic melamine resin sheet (200), which is cut (sliced) to a certain size in the finishing stage (70) and the product support frame (170), into the product support frame (170).

[0096] By carrying out the method (1) for manufacturing a visible light-activated photocatalytic melamine resin sheet and the apparatus (100) for manufacturing a visible light-activated photocatalytic melamine resin sheet according to the present invention as described above, it is possible to manufacture a visible light-activated photocatalytic melamine resin sheet (200) in which a visible light-activated photocatalytic liquid is coated on one side (surface or back side) of a base paper (decorative paper) in which melamine resin is impregnated on the surface (outer surface).

[0097] It was confirmed by an electron microscope (not specifically illustrated) that the distribution of the visible light-activating photocatalytic material in the visible light-activating photocatalytic liquid (132) coated on one surface of the visible light-activating photocatalytic type melamine resin sheet (200) according to the present invention manufactured as described above is evenly distributed.

[0098] The visible light-activated photocatalytic melamine resin sheet (200) according to the present invention, manufactured as described above, is composed by adding (diluting) and mixing an expensive visible light-activated photocatalytic material (visible light-activated photocatalytic particles or visible light-activated photocatalytic coating composition) to melamine resin (122), and thus the visible light-activated photocatalytic melamine resin sheet (200), such as a low-pressure melamine laminate, is manufactured, thereby significantly lowering the manufacturing cost of the manufactured visible light-activated photocatalytic melamine resin sheet (200). Furthermore, if the visible light-activated photocatalytic melamine resin sheet (200) manufactured at such a low cost is used as various indoor furniture and interior materials, the indoor furniture and interior materials can have an antibacterial function while significantly lowering the manufacturing cost.

[0100] Although the present invention has been described in detail only with respect to specific embodiments, it is obvious to those skilled in the art that various modifications and variations can be made within the scope of the technical spirit of the invention, and such modifications and variations are naturally included in the appended claims. Explanation of the symbols

[0101] 1: Method for manufacturing a visible light-activated photocatalytic melamine resin sheet 10: Substrate roll supply step 20: Melamine resin impregnation step 30: Visible light-activated photocatalyst coating step 40: Drying step 50: Cooling stage 60: Cutting stage 70: Product completion stage 100: Visible light-activated photocatalytic type melamine resin sheet manufacturing device 110: Material Roll Supply Unit 111: Base Paper 120: Melamine resin impregnation device section 121: Impregnation tank 122: Melamine resin 125: Guide roller 126, 136: Children 130: Visible light-activated photocatalytic coating device section 131: Coating tank 132: Visible light-activated photocatalyst solution 135: Coating roller 136: Coating guide roller 140: Drying unit section 150: Cooling unit section 160: Cutting device section 170: Product support frame 200: Visible light-activated photocatalytic melamine resin sheet

Claims

Claim 1 A manufacturing method comprising: a substrate roll supply step (10) for supplying a base paper (pattern paper) from a substrate roll in which a pattern paper printed with a specific or non-specific pattern is wound in a roll shape; a melamine resin impregnation step (20) for passing the supplied base paper through melamine resin to impregnate the surface (outer surface) of the base paper with melamine resin; a drying step (40) for drying the melamine resin-impregnated base paper with melamine resin impregnated on its surface (outer surface) while passing it through; a cooling step (50) for cooling the dried melamine resin-impregnated base paper while passing it through; and a cutting step (60) for cutting the cooled melamine resin-impregnated base paper into a predetermined size (length); A method for manufacturing a visible light-activated photocatalytic type melamine resin sheet, characterized by: a melamine resin impregnation step (20) in which the supplied base paper is passed through a melamine resin to impregnate the surface (outer surface) of the base paper with melamine resin, and a visible light-activated photocatalytic coating step (30) in which a visible light-activated photocatalytic liquid (132) is coated on one side (surface or back surface) of the base paper impregnated with melamine resin on the surface (outer surface), thereby enabling the manufacture of a visible light-activated photocatalytic type melamine resin sheet (200) in which a visible light-activated photocatalytic liquid (132) is coated on one side (surface or back surface) of the base paper impregnated with melamine resin on the surface (outer surface). Claim 2 A manufacturing device comprising: a base roll supply unit (110) that supplies a base paper (111) from a base roll in which a shaped paper printed with a specific or non-specific shape is wound in a roll shape; a melamine resin impregnation unit (120) that passes the supplied base paper (111) through melamine resin (122) to impregnate the surface (outer surface) of the base paper with melamine resin (122); a drying unit (140) that dries the base paper impregnated with melamine resin on its surface (outer surface) while passing it through; a cooling unit (150) that cools the dried base paper impregnated with melamine resin while passing it through; and a cutting unit (160) that cuts the cooled base paper impregnated with melamine resin into a certain size (length); A manufacturing apparatus for a visible light-activated photocatalytic type melamine resin sheet (200) characterized by adding a visible light-activated photocatalytic coating device (130) to the rear of a melamine resin impregnation device (120) that passes the supplied base paper through melamine resin to impregnate the surface (outer surface) of the base paper with melamine resin, thereby coating a visible light-activated photocatalytic liquid (132) on one side (surface or back surface) of the base paper impregnated with melamine resin on the surface (outer surface), so as to enable the manufacture of a visible light-activated photocatalytic type melamine resin sheet (200) in which a visible light-activated photocatalytic liquid is coated on one side (surface or back surface) of the base paper impregnated with melamine resin on the surface (outer surface). Claim 3 In claim 2, the visible light-activated photocatalyst coating device part (130) is characterized by: a coating roller (135) being installed as an axis inside a coating tank (131) filled with a visible light-activated photocatalyst liquid (132) and rotated at a constant speed, wherein the lower side of the coating roller (135) is immersed in the visible light-activated photocatalyst liquid (132) and the upper side of the coating roller (135) protrudes above the visible light-activated photocatalyst liquid (132); and a base paper (111) impregnated with melamine resin (122) on its outer surface is conveyed (passed) while closely contacting the outer periphery (upper surface) of the coating roller (135). Claim 4 The apparatus for manufacturing a visible light-activated photocatalytic melamine resin sheet according to claim 3, wherein the visible light-activated photocatalytic coating device part (130) further installs a coating guide roller (136) on the upper vertical centerline of the coating roller (135), such that the outer surface of the coating guide roller (136) is connected to the outer surface of the coating roller (135).

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