KR100729254B1 - Panel manufacturing method including mixture of melamine resin and urushi lacquer - Google Patents

Abstract

A panel manufacturing method using mixed solution of melamine resin and urushiol lacquer is provided to secure absorption of electromotive waves, far infrared ray emission, and anti-bacteria effects through processes for impregnating a gravure print paper with melamine resin and urushiol lacquer, drying, and thermally pressing the print paper. In the panel manufacturing method using mixed solution of melamine resin and urushiol lacquer, a urushiol lacquer extracting step comprises: mixing raw lacquer and xylene at the weight rate of 1:0.8~1.2 and extracting urushiol components by centrifugally separating the mixture of the raw lacquer and xylene at 4,000~6,000 RPM(Revolution Per Minute) for 5~15 minutes; mixing ammonia water of 8~12wt.% with the extracted urushiol and then removing moisture by reacting the ammonia water and urushiol at 30~50 RPM for 30~90 minutes; and adding alcohol of 12~13.5wt.% to the urushiol, heating the urushiol at 80~120°C for 30~90 minutes, mixing xylene of 9.5~10wt.% at 70~85°C, and then separating urushiol lacquer by heating the mixture for 30~90 minutes. In a second step, the print paper is impregnated with the mixed solution produced by mixing the melamine resin of 70~99wt.% with the urushiol lacquer of 1~30wt.%.

Description

Panel manufacturing method using a mixed solution of melamine resin and lacquer liquid {PANEL MANUFACTURING METHOD INCLUDING MIXTURE OF MELAMINE RESIN AND URUSHI LACQUER}

1 is a photograph of a panel manufactured using a mixed solution of melamine resin and lacquer mixed according to one embodiment of the present invention,

2 is a cross-sectional view of a panel manufactured using a mixed solution of melamine resin and lacquer according to the present invention;

Figure 3 is a schematic diagram showing a process of coating both sides of the printing paper by impregnating the mixed solution of the melamine resin and lacquer according to the method of the present invention.

The present invention relates to a panel manufactured by using a mixed solution of melamine resin and lacquer, and a method of manufacturing the same. The present invention relates to a panel and a method for producing the same, in which a mixed solution impregnated layer mixed with a lacquer solution is laminated.

Raw lacquer or lacquer from the lacquer contains 55-66% by weight of urushiol, 25-30% by weight of water, 5-10% by weight of monosaccharides and polysaccharides, 3-5% of nitrogenous substances, and a small amount of laccase. ), It is known to contain enzymes such as stellcyanin and peroxidase. Lacquer is a kind of natural resin that has been used in thousands of years in Korea, China and Japan, mainly applied to wooden products, and has been used in large quantities in the production of daily necessities such as cabinets, bowls, cutlery, and tableware. It is a well-known fact that it has the advantage of excellent insect repellency and insulation, and especially excellent storage.

Recently, as the consumption of environment-friendly products increases, efforts have been made to apply lacquer, which has been confirmed for a long time, not only to artificial chemicals, but also to furniture and tableware as well as interior and exterior materials for construction. However, the lacquer is often expensive to rely on manual drying, there is a difficulty in increasing the production cost and mass production.

On the other hand, melamine reacts with formaldehyde to produce a composite thermosetting resin. Melamine-form aldehyde resin (hereinafter referred to as 'melamine resin') is a high-quality special product used for tableware, upper layers of laminated plastics and industrial and decorative coatings.

Specifically, melamine impregnated toilet paper (or melamine impregnated paper or melamine resin impregnated paper) (LPM: Low Pressure Melamine) is a decorative sheet formed by impregnating a shape paper with melamine resin and then drying. The shape paper is made by printing a shape or color on paper.

Melamine toilet board is made by pressing the melamine impregnated toilet paper in MDF (Medium Density Fiber), PB (Particle Board), plywood board (Board) under high temperature and low pressure conditions, desk top, partition, door, furniture, etc. Used as a material for High Pressure Melamine (HPM: High Pressure Melamine) is made by hot pressing under high temperature and high pressure conditions by placing one or more sheets (usually 5 ~ 8 sheets) of phenol-containing kraft paper on the lower part of melamine impregnated toilet paper. It is used as a table top surface material and a wall surface material.

However, in recent years, the development of products having functions such as far-infrared radiation effect, electromagnetic wave blocking effect, antimicrobial activity, etc. are required according to various consumer demands.

Accordingly, an object of the present invention is to provide a panel using a melamine resin and lacquer mixed solution that can be applied to decorative cabinets, building interior materials or exterior materials having absorption of harmful electromagnetic waves, far-infrared radiation effects and antibacterial properties.

Still another object of the present invention is to provide a method for producing a panel having absorbing harmful electromagnetic waves, far infrared radiation effect, and antibacterial effect by impregnating, drying, and hot pressing a gravure printing paper into a melamine resin and a lacquer mixture.

In order to achieve the above technical problem, a panel manufactured by using a mixed solution of melamine resin and lacquer according to the present invention is a mixed solution impregnated layer, a gravure printing paper layer, a melamine resin and a lacquer mixed with a melamine resin and a lacquer at the top of the panel. The mixed liquid impregnated layer in which the mixture was mixed was formed by lamination in order.
In addition, the present invention is a panel manufacturing method using a mixed solution of melamine resin and lacquer liquid, mixed with raw lacquer and xylene at a weight ratio of 1: 0.8 to 1.2 for 5 to 15 minutes at 4,000 ~ 6,000 rpm Centrifugation to extract the urushiol component, and mixed with the extracted urushiol 8 to 12% by weight of ammonia water, and then reacted for 30 to 90 minutes at 30 to 50 rpm to remove the water and the water is removed 12 to 13.5% by weight of alcohol was added to the prepared urushiol and heated at 80 to 120 ° C. for 30 to 90 minutes, followed by mixing 9.5 to 10% by weight of xylene at 70 to 85 ° C., followed by heating for 30 to 90 minutes. Extracting the lacquer comprising a process of separating the lacquer; And it is characterized in that it comprises a step of impregnating the lacquer and melamine resin mixed solution mixed with 70 ~ 99% by weight of the melamine resin in the extracted 1 ~ 30% by weight of the lacquer.
In addition, the present invention comprises the steps of impregnating the lacquer and melamine resin mixed solution of 70 to 99% by weight of the melamine resin mixed with the extracted 1 ~ 30% by weight of the lacquer; Impregnating gravure printing paper into the mixed solution; Drying the impregnated printing paper at 110 to 130 ° C. for 60 to 120 seconds; And 150 to 190 ° C., 30 to 60 seconds, and 20 to 50 kg / cm 3 of hot pressing the dried printing paper on the panel.

In addition, the panel is characterized in that the panel is made of at least one selected from Low Pressure Melamine (LPM), Medium Density Fiber (MDF), PB (Particle Board), plywood or HPM (High Pressure Melamine).

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The manufacturing step of the mixed solution in which the melamine resin and the lacquer is mixed is to mix 70 to 99% by weight of the melamine resin and 1 to 30% by weight of the lacquer, the dry time when the lacquer is mixed by more than 30% by weight of its own properties This increases and there is a problem of poor workability and economics.

On the other hand, the melamine resin may be applied to a typical melamine resin that can be applied to melamine impregnated toilet paper, toilet boards and toilet plates.

In addition, the lacquer liquid used in the present invention is not subject to the origin of Korea, China, Japan, Southeast Asia, etc., and after filtering the raw lacquer with filter paper to remove impurities, xylene for dissolving the raw lacquer and raw lacquer Mix in a ratio of 1: 0.8 to 1.2. At this time, when the mixing ratio of raw xylene to xylene is lower than 0.8, it is difficult to dissolve the lacquer solution. When the mixing ratio of xylene is too high, the amount of urushiol extraction is reduced due to the excessive amount of xylene, and the trouble of evaporating xylene occurs. Meanwhile, the raw lacquer and xylene mixture is centrifuged at 4,000 to 6,000 rpm for 5 to 15 minutes to extract and separate only the urushiol component, and then mixed with the extracted urushiol in an amount of 8 to 12% by weight of ammonia, 30 at 30 to 50 rpm. Allow it to react for 90 minutes to remove moisture. 12 to 13.5% by weight of alcohol was added to the dehydrated urushiol, heated at 80 to 120 ° C. for 30 to 90 minutes, and then mixed at 9.5 to 10% by weight of xylene at 70 to 85 ° C., then 30 to Lacquer liquid containing purified urushiol prepared by the step comprising the step of heating for 90 minutes is used.

The step of immersing the gravure printing paper in the melamine resin and lacquer mixture, printing the gravure printing in a variety of shapes and colors on paper of 80g / ㎡ ~ 150g / ㎡ by impregnating the printing paper in the melamine resin and lacquer mixture Make sure to coat both sides of the paper.

Thereafter, the impregnated printing paper is dried, and at this time, it is dried at 110 to 130 ° C. and 60 to 120 seconds, preferably at about 120 ° C. for about 90 seconds.

The dried printing paper is subjected to thermopressurization at a temperature of 150 to 190 ° C., 30 to 60 seconds, and 20 to 50 kg / cm 2 on the panel, and preferably at about 180 ° C., about 45 seconds and about 25 kg / cm 2 It does not use any adhesive. In this case, the panel is characterized in that at least one selected from Low Pressure Melamine (LPM), Medium Density Fiber (MDF), PB (Particle Board), plywood or HPM (High Pressure Melamine).

By the above method, since it has far-infrared radiation effect, electromagnetic wave blocking effect and excellent antibacterial effect by lacquer component, it can be variously applied to interior interior materials, furniture, etc. that can be installed in residential spaces to meet the needs of various consumers looking for eco-friendly products. can do.

Hereinafter, the configuration of the present invention will be described in detail through examples, test examples and tables. However, the scope of the present invention is not limited to the claims of the present invention by the following examples, test examples and tables.

Example 1 Preparation of MDF Panel Using a Mixture of Melamine Resin and Lacquer Liquid

After filtering the raw lacquer with filter paper to remove impurities, the raw lacquer and xylene were mixed at a ratio of 1: 1, aged for 1 week, centrifuged at 5,000 rpm for 10 minutes to extract the urushiol component, and then extracted to urushiol. 10% by weight of ammonia water was mixed and reacted at 40 ° C. and 40 rpm for 1 hour to remove residual water. 12.8% by weight of alcohol was added to the water-removed urushiol and heated at 100 ° C. for 1 hour, and then 9.7% by weight of xylene was mixed again at 80 ° C. and heated for 1 hour to contain purified urushiol. Lacquer liquid was used. 20 kg of the mixed solution of 10% by weight of the purified lacquer solution and 90% by weight of melamine resin (Korea Gravure Co., Ltd.) were prepared as test materials.

Meanwhile, as shown in FIG. 3, the gravure printing paper on which a wooden pattern was printed on 80 g / m 2 paper by gravure printing was impregnated in the mixed solution mixed with melamine and lacquer, and then coated on both sides of the printing paper. It dried at 90 degreeC.

The dried printing paper was hot pressed on a MDF panel at 180 ° C. for 45 seconds at 25 kg / cm 2, and then bonded to the panel to prepare a panel including a lacquer mixture (see FIG. 1).

As shown in FIG. 2, the prepared panel has a cross section of a mixed solution of melamine resin and lacquer in order on the MDF panel 1, a paper 3, a printing layer 4, a melamine resin and a lacquer solution. Mixed liquid impregnation layer 5 is laminated.

Test Example 1. Far Infrared Radiation Effect Test

The present inventors performed the far-infrared emissivity emitted from the MDF panel prepared in Example 1 by requesting the Korea Institute of Far Infrared Evaluation (KIFA).

Specifically, as a result of measuring the black body using a FT-IR spectrometer at 37 ℃ compared to the black body (black body) it was confirmed that the excellent far-infrared emissivity as shown in Table 1 below.

Emissivity (5 ~ 20㎛) Radiation energy (W / ㎡ · ㎛, 37 ℃) 0.897 3.46 x 10 ²

Test Example 2 Antibacterial Effect Test

The present inventors performed the antimicrobial test on the MDF panel prepared in Example 1 by requesting the Korea Institute of Chemical Testing. The test strains used were Escherichia coli ATCC 8739 and Staphylococcus aureus ATCC 6538, and the coated film and the control specimens were sterilized polybags for the Stomacher 400.

Test Items sample Result Test Methods E. coli A 3.6 x 10 ⁵ CFU / Sample JIS Z 2801: 2000 B 1.3 x 10 ⁷ CFU / Sample JIS Z 2801: 2000 C <10 CFU / sample JIS Z 2801: 2000 Antimicrobial activity 6.1 or later JIS Z 2801: 2000 S. aureus A 3.0 x 10 ⁵ CFU / Sample JIS Z 2801: 2000 B 1.1 x 10 ⁵ CFU / Sample JIS Z 2801: 2000 C <10 CFU / sample JIS Z 2801: 2000 Antimicrobial activity 4.1 or higher JIS Z 2801: 2000

At this time, A is the initial number of bacteria (average value) of the control specimen, B is the strain (average value) of the control specimen after incubation for 24 hours, C is the number of bacteria (average value) of the test specimen prepared according to the present invention after 24 hours incubation The antimicrobial activity value (log (B / C)) is the log (B / A) minus log (C / A).

As shown in Table 2, the panel prepared by using the mixed solution of the melamine resin and lacquer prepared by the present invention was confirmed that the excellent antimicrobial activity.

The above-described examples, test examples and drawings are merely for the purpose of describing the contents of the invention in detail, and are not intended to limit the scope of the technical idea of the invention. As those skilled in the art, various substitutions, modifications and changes are possible within the scope without departing from the spirit of the present invention is not limited to the embodiments and the accompanying drawings, as well as the claims described below It should be determined that the claims are included in their equality.

The method for producing a panel using a mixed solution of melamine resin and lacquer according to the present invention described above can be mass-produced on a industrial scale by a simple process, and the far-infrared radiation effect and electromagnetic wave by the lacquer As it has a blocking effect and excellent antibacterial effect, it can be variously applied to interior interior materials and furniture that can be installed in residential spaces in accordance with various consumer demands for finding eco-friendly products.

Claims (9)

delete delete delete delete delete delete In the manufacturing method of the panel manufactured using the mixed liquid which mixed melamine resin and lacquer liquid, Mixing raw lacquer and xylene at a weight ratio of 1: 0.8 to 1.2, centrifuging at 4,000 to 6,000 rpm for 5 to 15 minutes to extract the urushiol component, and mixing the extracted urushiol with 8 to 12% by weight of ammonia water Then, the process of removing water by reacting for 30 to 90 minutes at 30 to 50 rpm and 12 to 13.5% by weight of alcohol is added to the water-removed urushiol and heated at 80 to 120 ℃ for 30 to 90 minutes Next, extracting the lacquer made of a process of separating the lacquer by mixing the 9.5 to 10% by weight of xylene at 70 ~ 85 ℃ and then heated for 30 to 90 minutes; And Using the mixed liquid mixed melamine resin and lacquer, characterized in that it comprises the step of impregnating the lacquer and melamine resin mixed solution mixed with 70 ~ 99% by weight of melamine resin in the extracted 1 ~ 30% by weight of the lacquer Method of manufacturing panel. The method of claim 7, wherein Impregnating the lacquer and the melamine resin mixed solution in which 70 to 99 wt% of the melamine resin is mixed with the extracted 1 to 30 wt% of the lacquer; Impregnating gravure printing paper into the mixed solution; Drying the impregnated printing paper at 110 to 130 ° C. for 60 to 120 seconds; And Method of producing a panel using a mixed solution of the melamine resin and lacquer comprising; step of hot pressing the dried printing paper on the panel for 150 ~ 190 ℃, 30 to 60 seconds, 20 to 50 kg / cm 3. The method according to claim 7 or 8, The panel is a mixture of melamine resin and lacquer, characterized in that the production of at least one selected from LPM (Low Pressure Melamine), MDF (Medium Density Fiber), PB (Particle Board), plywood or HPM (High Pressure Melamine) Method for producing a panel using a mixed solution.

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