KR102484373B1 - Household washbasin using eco-friendly hybrid oil and mold board that has effect of suppressing occurrence of moisture, mold - Google Patents

Abstract

The present invention relates to a household sink, and more specifically, to a household sink using a molded board having remarkably improved physical properties such as moisture-proof and insect-proof properties and the like. A method for manufacturing a household sink includes: a first step of manufacturing a functional composition; a second step of manufacturing a wooden board; a third step of manufacturing a molded board impregnated with eco-friendly oil; a fourth step of cutting the molded board; and a fifth step of forming an outer frame for manufacturing a sink.

Description

Household washbasin using eco-friendly hybrid oil and mold board that has effect of suppressing occurrence of moisture, mold}

The present invention relates to a household sink, and more particularly, to a household sink to which a molded board is applied, in which physical properties such as moisture-proofing and insect-proofing are significantly improved by including wood effectively penetrated with eco-friendly oil.

Until now, the main material most commonly used in furniture, furniture parts, building materials, and construction subsidiary materials is wood. Wood has been widely used in various industrial fields due to its advantages of being light and easy to process. Board) is processed and used.

In the manufacture of wood boards, it is an essential process to use chemicals such as adhesives in the process of manufacturing and producing plywood, and in this process, thermosetting resins such as melamine and urea resin are adopted and used. Since the formaldehyde component is necessarily added to such melamine, urea resin, etc. during the production process, there is a problem in that unreacted formaldehyde present in the adhesive is gradually released.

In addition, due to its basic characteristics, wood is vulnerable to moisture and fire and is prone to mold and insects. That is, in the past, there have been many deformation problems of molded boards made of wood as a main material due to the influence of temperature, humidity, and precipitation. In particular, since kitchen furniture, sink bowls, stove parts, etc. are exposed to environments using water, there is a problem in that they are very vulnerable to damage and deformation of wood due to water leakage or moisture.

Republic of Korea Patent No. 10-1467850

An object of the present invention is to provide a household sink using a molded board and a method for manufacturing the same, in which physical properties such as moisture-proofing and insect-repellent are significantly improved, including wood effectively penetrated with eco-friendly oil.

The above and other objects and advantages of the present invention will become apparent from the following description of preferred embodiments.

The above object is, a first step of preparing a wood raw material and a functional composition having a moisture-proof and mold-inhibiting effect; A second step of manufacturing a wood board by subjecting a mixture obtained by mixing the wood raw material, the functional composition, and a thermosetting adhesive to a molding process; A third step of manufacturing a molding board impregnated with eco-friendly oil through an infiltration method of infiltrating the surface of the wooden board with eco-friendly oil; A fourth step of cutting the molding board permeated with the eco-friendly oil into a panel shape for making a sink, and then cutting; And, a fifth step of bonding and assembling the cut molding board with a bond harmless to the human body or an industrial iron member to form an external frame for manufacturing a sink; It can be achieved by a household sink manufacturing method comprising a.

According to the present invention, the functionality of the wood itself can be imparted by mixing and molding a functional composition exhibiting moisture-proofing and moisture-absorbing effects and suppressing the occurrence of moisture and mold together with wood raw materials. In addition, it is possible to manufacture a household sink to which a molded board with increased synergy for functionality is applied through an infiltration method in which eco-friendly oil is effectively penetrated into the surface of the molded wood board.

The eco-friendly oil exhibits the effect of promoting oil absorption by maintaining a constant temperature during the processing process by having a characteristic that the physical properties of the oil change little by little according to the temperature change according to the season.

In addition, the molded board according to the present invention overcomes the difficult disadvantages of painting or coating after oil penetrates wood, and in the state where oil penetrates the entire wood, it has the effect of extinguishing Staphylococcus aureus and Escherichia coli and warping It has anti-crack/discoloration effects and also provides an effect to improve the waterproof effect. In addition, the molded board according to the present invention exhibits the effect of cost reduction compared to the existing technology.

In addition, the eco-friendly oil penetration wood manufacturing method according to another embodiment of the present invention, due to its insect repellent efficacy, prevents insects that interfere with various growth stages of insects, that is, lays eggs, larvae enter, adult insects enter, etc. Any step can provide a disruptive effect.

However, the effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

Hereinafter, the present invention will be described in detail with reference to embodiments and drawings of the present invention. These examples are only presented as examples to explain the present invention in more detail, and it will be apparent to those skilled in the art that the scope of the present invention is not limited by these examples. .

In addition, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of skill in the art to which this invention belongs, and in case of conflict, this specification including definitions of will take precedence.

In order to clearly explain the proposed invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification. And, when a certain component is said to "include", this means that it may further include other components without excluding other components unless otherwise stated. Also, a “unit” described in the specification means one unit or block that performs a specific function.

In each step, the identification code (first, second, etc.) is used for convenience of description, and the identification code does not describe the order of each step, and each step does not clearly describe a specific order in context. It may be performed differently from the order specified above. That is, each step may be performed in the same order as specified, may be performed substantially simultaneously, or may be performed in the reverse order.

Hereinafter, embodiments and examples of the present application will be described in detail. However, it may not be limited to these embodiments and examples herein.

A method for manufacturing a molded board according to an embodiment of the present invention includes a first step of preparing a wood raw material and a functional composition having moisture-proofing and anti-fungal effects; A second step of manufacturing a wood board by subjecting a mixture obtained by mixing the wood raw material, the functional composition, and a thermosetting adhesive to a molding process; A third step of manufacturing a molding board impregnated with eco-friendly oil through an infiltration method of infiltrating the surface of the wooden board with eco-friendly oil; A fourth step of cutting the molding board permeated with the eco-friendly oil into a panel shape for making a sink, and then cutting; And, a fifth step of bonding and assembling the cut molding board with a bond harmless to the human body or an industrial iron member to form an external frame for manufacturing a sink; includes

Hereinafter, each process will be described in detail.

<Step 1>

The first step includes the steps of S10 to S40. The step S10 may be a process of preparing a wood raw material.

First, natural drying is performed by obtaining any one wood selected from the group consisting of pine, juniper, cypress, and fir, and then, using a conventional tool, the rough and crude outer bark is peeled off and the surface is smoothed. can be performed.

Then, using multiple cutting blades, the first piece was cut into 5 mm, 5 mm, and 0.5 mm in width, length, and thickness, respectively, and the second piece was cut into 3 mm, 3 mm, and 0.3 mm in width, length, and thickness, respectively. Each piece can be manufactured separately.

If the first and second joiner pieces are prepared in different sizes and used together, the porosity of the wood board can be further increased and the hardness can be improved.

On the other hand, natural wood fiber may be manufactured by performing external processing of the raw wood and mixing and processing wood chips, wood pulverized material, etc. obtained in the process of preparing joiner pieces. The manufacturing method of the wood fiber may follow a conventional technique. For example, the natural wood fibers may be 100% natural fir wood fibers.

When the wood fiber is used together with the joiner pieces as a wood raw material, the porosity of the wood board can be further improved and the manufacturing cost can be reduced. In some cases, cellulose wood fibers can also be used together to further improve physical properties such as durability and strength.

Rice straw, wheat straw, and rice hulls may be pulverized to form a powder having an average particle diameter of 0.1 to 1 mm, and mixed powder may be prepared. When the mixed powder is used together with the joinery pieces and wood fibers, the mixed powder finely penetrates deep into the wood board to further increase the porosity, while bonding strength between the adhesive and the wood raw materials later has the effect of shortening the process time by improving

In one embodiment, 30 parts by weight of the 100% natural fir wood fiber and 15 parts by weight of the mixed powder were mixed with 100 parts by weight of the small piece mixture in which the first and second small pieces were blended at a weight ratio of 1: 0.8. Thus, wood raw materials can be prepared.

Next, the functional composition may be prepared. The functional composition may include a moisture-proof inorganic powder exhibiting a waterproof or moisture-proof effect, a ceramic powder having a moisture-absorbing and antibacterial function, and a natural powder having a mold inhibiting effect.

The step S20 may be a process of preparing inorganic powder for moisture proofing.

The moisture-proof inorganic powder may have a structure in which a nano-metal oxide is coated on a surface of nano-silica, and may exhibit a waterproof or moisture-proof effect by exhibiting hydrophobicity.

The nano-silica may have a solid core/mesoporous shell (SCMS) structure and have an average particle size of 50 to 250 nm.

The nano metal oxide is titanium oxide, tin oxide, tungsten oxide, antimony-doped tin oxide (ATO), indium tin oxide (ITO), oxide At least one selected from the group consisting of aluminum zinc oxide (AZO) and cesium tungsten oxide (CTO) may be exemplified.

For example, the nano-metal oxide may be a mixture of tin oxide:antimony-doped tin oxide (ATO):indium tin oxide (ITO) at a weight ratio of 1:0.8:0.6. can

로 승온하여 상기 나노 실리카 100 중량부를 넣고 2.5 시간 동안 교반하여 얻어지는 것일 수 있다. In one embodiment, the method for preparing the moisture-proof inorganic powder is a mixture of 30 parts by weight of the nano-metal oxide and 25 parts by weight of dichloromethane and stirred at 55 ° C. for 3 hours to prepare a nano-metal oxide in gel form. and 10 parts by weight of TESPT (bis-(3-triethoxysilpropyl)tetrasulfide) was added and mixed at 25 ° C.

It may be obtained by raising the temperature to 100 parts by weight of the nano-silica and stirring for 2.5 hours.

The step S30 may further include ceramic powder in order to increase moisture-proof, moisture-absorbent, and antibacterial effects.

In one embodiment, 10 parts by weight of ceramic powder obtained by mixing powders of ionite, serpentine, and germanium in a weight ratio of 1:1:0.5 may be further mixed with respect to 100 parts by weight of the moisture-proof inorganic powder.

The step S40 may further include natural powder in order to increase the effect of inhibiting mold development.

In one embodiment, with respect to 100 parts by weight of the moisture-proof inorganic powder, each powder of yulpi, hydrangea tea, cinnamon, situation, ligida, and mugwort is mixed in a weight ratio of 1: 1: 1.2: 1.2: 1: 1.2. More powders can be mixed.

The functional composition may be mixed by further including 90 to 150 parts by weight, for example, 100 parts by weight of water, based on 100 parts by weight of the solid content of the functional composition. The functional composition may further include other additives commonly used in the art, such as binders and thickeners without limitation.

Based on 100 parts by weight of the wood raw material, the functional composition is preferably included in 10 to 15 parts by weight. When the functional composition is contained in less than 10 parts by weight, the moisture-proof, moisture-absorbent and antibacterial effects may be insignificant, and if it exceeds 15 parts by weight, problems may occur in compatibility with wood raw materials or damage the basic physical properties of wood.

On the other hand, in the first step, the wood raw material may further include 3 to 10 parts by weight, for example, 6 parts by weight of a paste containing diatomaceous earth, charcoal powder and loess for a far-infrared radiation effect and deodorization effect. .

The method for producing the paste includes the steps of mixing and soaking 0.2 to 7 parts by weight of Korean paper with 100 parts by weight of water, adding 10 to 15 parts by weight of oak charcoal powder thereto and mixing and grinding with a mixer (S11); Mixing 20 to 30 parts by weight of diatomaceous earth and 100 to 150 parts by weight of ocher powder with respect to 100 parts by weight of water and kneading by mixing with a mixer (S12); After mixing the mixed and pulverized water, Korean paper paper and charcoal powder mixture in step S11 and the kneaded mixture in step S12 in a ratio of 1: 4, mixing and kneading with a mixer for 20 to 30 minutes to prepare a paste (S13 ); and naturally drying the paste prepared in step S13 at room temperature (S14).

In addition, the functional composition may further include 0.1 to 3 parts by weight of colloidal silver based on 100 parts by weight of the composition. The colloidal silver can exert a strong bactericidal effect of 99.99% from about 650 kinds of bacteria. The colloidal silver is obtained by electrolyzing silver (Ag) having a purity of 99% or more into ultra-fine particles of 0.005 to 0.015 μm and dissolving in water, and may be a silver solution in an ionized safe state.

<Step 2>

The second step includes the steps of S50 to S80.

The step S50 may be a process of preparing a wood raw material mixture.

In one embodiment, the wood raw material obtained in the first step is dried at 23 to 25 ° C. for 24 hours, and then the first and second joiner pieces are mixed at a weight ratio of 1: 0.8. Compared to parts by weight, a wood raw material mixture obtained by mixing 30 parts by weight of the 100% natural fir wood fiber and 15 parts by weight of the mixed powder may be prepared. The mixing method may follow a conventional technique.

The step S60 may be a process of mixing an adhesive with the wood raw material mixture. The adhesive may be a thermosetting adhesive, an environmentally friendly adhesive, or a combination thereof.

The thermosetting adhesive may be any one of urea-based, melamine-based, phenol-based, unsaturated polyester-based, and epoxy-based, but is not necessarily limited thereto. The eco-friendly adhesive may be an ethylene vinyl acetate (EVA) resin emulsion, water-based polyurethane, or a combination thereof, but is not limited thereto.

In one embodiment, the adhesive is 10 parts by weight of a phenolic resin-based thermosetting adhesive and 5 parts by weight of an ethylene-vinyl acetate (EVA) resin emulsion and aqueous polyurethane in a weight ratio of 1: 1.5 to 2.0, compared to the wood raw material mixture. A mixture of environmentally friendly adhesives may be used.

The step S70 may be a process of mixing the wood raw material mixture and the adhesive and then aging them.

The aging allows the adhesive to sufficiently permeate between the pieces of small wood, wood fibers, and mixed powder without gaps, while the adhesive is in contact with air and hardened to some extent (not thermally cured), and then the adhesive is released to the outside in the compression molding step. to keep it from spilling out.

In one embodiment, the wood raw material mixture mixed with the adhesive may be aged at 20 to 23 ° C. for 15 to 20 hours. At this time, if the aging time is less than 15 hours, the adhesive does not penetrate between the joinery pieces sufficiently, resulting in poor hardness. However, there is a risk of greatly deteriorating the appearance of the product.

The step S80 may be a process of manufacturing a wood board by putting the aged mixture in a hot press and compression molding at 10 kg/cm ² at 150 to 160 °C. A specific method of the compression molding may follow techniques commonly used in the art without limitation. Physical properties such as shape, thickness, and size of the wood board may vary depending on the type of final product to which the wood board is applied.

For example, the wood board may have any one form selected from Particle Board (PB), Medium Density Fiberboard (MDF), and High Density Fiberboard (HDF).

<Step 3>

The third step is an eco-friendly oil penetration method, for the wood board, sanding process (S100), hot air heating process (S200), eco-friendly oil penetration process (S300), undercoating process (S400), eco-friendly adhesive coating process ( S500), a top coating process (S600), a top coating process (S700), a printing process (S700a), and a UV irradiation process (S800) may be sequentially performed.

First, look at [sanding process (S100)]. After cleaning each surface, which is the oil-attached surface of the wooden board, which is the adhesive, remove dust, oil stains, paint, stains, contamination, foreign substances, etc., and create scratches with sandpaper, sanding machine, etc. to enhance oil penetration. Do processing work.

Next, look at [hot air heating process (S200)].

Remove moisture from the surface to be penetrated with oil through hot air heating. More specifically, it is characterized in that the sanded wood is put into a hot air heating room and heated with hot air for 45 to 75 minutes under the condition that the temperature of the hot air heating room is 180 to 250 ° C.

Next, look at the [eco-friendly oil penetration process (S300)]. In order to infiltrate eco-friendly oil into wood, a roller-type or brush-type application device is used as a painting tool, or additional work on the painted surface such as engraving, embossing, and openwork is performed between the sanding process (S100) and the hot air heating process (S200). In this case, it is preferable to use a spray injection device.

In one embodiment of the present invention, the eco-friendly oil is used by mixing silicone oil, aromatic base oil, and paraffin base oil at a ratio of 1:1:0.5 parts by weight, but 2 to 3 parts by weight based on 100 parts by weight of the mixture of citrus oil as insect repellent oil. It is preferable to do so.

As for the number of times of application of eco-friendly oil, it is desirable to apply it three or more times in order to enhance the natural color and grain ^of wood and to ensure efficiency and durability such as water repellency, waterproofing, and insect repellent. It is possible to do 3 times, and in order to infiltrate the eco-friendly oil deep into the structure of the wood, in the case of a roller-type or brush-type applicator, in order to infiltrate more quickly and deeply, the outer surface of the roller-type applicator should be made of soft fluff or cloth, and brush-type It is preferable to additionally perform a process of forming the material of the applicator with a cloth or a cloth and applying oil to the outside and repeatedly rubbing the painted surface several times.

In the eco-friendly oil penetration process, the touch drying time is about 3 hours, and the complete drying time is 24 hours, but there may be differences depending on the type of wood, climate and environment of the work place, etc., and the re-infiltration process takes at least 3 hours. After that, it is preferable to perform the re-infiltration process after 24 hours for complete absorption, and it is preferable to work at a temperature of 10 ° C or higher.

The eco-friendly oil used in the present invention is a non-toxic wood protectant based on natural vegetable raw materials that acts as water repellent, preservative, and insect repellent. As a result of the emission test to toxic volatile organic compounds, formaldehyde: below the measurement standard (less than 0.005 mg), T- VOC emission amount: Less than 0.1mg/㎡, h, heavy metal non-detection (selenium, barium, tin, mercury, lead, arsenic, chromium, cadmium, etc.), T-VOC non-emission, non-toxic and odorless It has 99.2% volatility.

Due to this eco-friendly oil, wood realizes its outstanding natural color and pattern, suppresses distortion (smooth moisture control of wood by not forming a coating film), has excellent water repellent function (contains oil in wood tissue), and has 99.99% antibacterial activity. implementation (contains insect repellent function implementation oil), excellent penetrability when re-coating after a certain period of time, as well as being non-toxic and odorless, it can protect the health of constructors and users and increase the ability to utilize the interior. There is a significant effect in the disappearance of Staphylococcus aureus and Escherichia coli by the eco-friendly oil penetration process.

Next, look at [undercoating process (S400)].

It is preferable to apply an undercoat composition prepared by mixing a modified unsaturated polyester resin and a crosslinkable monomer on the outer surface of the wood subjected to the eco-friendly oil penetration process.

The coating composition reacts polyhydric alcohol and polybasic acid at 35 to 45: 45 to 55 parts by weight to prepare an intermediate, and then reacts 2 to 3 parts by weight of polyamine based on 100 parts by weight of the intermediate to prepare an amine-modified unsaturated polyester resin. and polymerization with 6 to 7 parts by weight of dipentaerythritol polyacrylate and 10 to 13 parts by weight of trimethylolpropane triacrylate based on 100 parts by weight of the amine-modified unsaturated polyester resin to prepare a modified unsaturated polyester resin. 2 to 3 parts by weight of graphene fibers and cellulose nano-fibers 4 to increase elasticity and tension with respect to 100 parts by weight of a coating composition having excellent processability and surface strength and an effect of increasing weather resistance and water resistance by mixing It is preferable to use a mixture of to 5 parts by weight.

By using such an undercoating composition, it is possible to secure solid mechanical properties by curing the eco-friendly adhesive in a state in which the mechanical strength is increased with respect to the oil-infiltrated wood due to partial mixing with the eco-friendly adhesive described later.

Here, in order to prevent a decrease in painting performance between the eco-friendly oil and the undercoating composition, in the present invention, it is preferable to perform the eco-friendly adhesive coating process described later before the undercoating composition is completely cured.

Hereinafter, look at the [eco-friendly adhesive coating process (S500)].

As an eco-friendly adhesive, it is a “non-toxic, eco-friendly urethane resin-based curing agent” based on various vegetable extracts and vegetable oils. After weighing 40% by weight of the main agent and 60% by weight of the curing agent, mix them by stirring very slowly for about 3 minutes, and the adhered surface is flat. It is preferable to apply evenly to the adhered surface using a small brush when bonding, and a disposable syringe when bonding gaps.

More specifically, the two-component eco-friendly adhesive composition contains 23 to 24 parts by weight of a plant extract, 13 to 15 parts by weight of a hybrid resin mixture, 7 to 8 parts by weight of a diluent, and 4 to 6 parts by weight of a thickener, based on 100 parts by weight of a polyurethane prepolymer. It is formed by adding and mixing 7 to 9 parts by weight of a plasticizer, 12 to 15 parts by weight of graphene, and 5 to 7 parts by weight of a flame retardant, and mixing a curing agent in a weight ratio of 4: 6 with respect to the formed subject to form an eco-friendly adhesive layer. there is.

The plant extract is a mixture of at least one of lacquer extract, pine resin, kelp extract, rubber tree extract, shoots of thickets, mulberry extract (Hwangchokgyu, Hibiscus manihot) extract, Benjamin extract, garlic extract, Injin mugwort extract, and plum extract. In particular, the main component of lacquer is urushiol, a polyphenol derivative, which is colorless and transparent at first, or turns black due to the action of oxidizing elements upon contact with air, forming a coating film. It is a viscous colorless liquid with the chemical formula C ₂₁ H ₃₄ O ₂ It is 210 to 222℃ (0.4 to 0.6mm Hg). In the air, it turns black and becomes thick and solidifies.

Here, if the content of the plant essence is less than 23 parts by weight, the adhesive function effect provided by the plant essence is insignificant, and if the content of the plant essence exceeds 24 parts by weight, the mixture content of the rest of the composition, especially the hybrid resin mixture, is higher than that of the essence. low, the mechanical properties of the composition may be lowered.

Here, as a hybrid resin mixture, CNT nano-based material, PLA (Poly Lactic Acid) resin, cellulose nanofiber, and carbon fiber are used and stirred at a weight ratio of 7 to 8: 18 to 24: 11 to 15: 5 to 7 to increase viscosity. It is formed by stirring a filler in a gel-type composition after being manufactured in a gel form having a, and can provide an effect capable of quickly and firmly sealing the sanded treated surface, which is a damaged part.

Here, the CNT nano-based material is formed to improve adhesion to the outer surface of the damaged portion, and may be formed by adding and mixing the CNT nanocomposite raw material and the thermally conductive adhesive at a weight ratio of 24 to 27:9 to 12.

Here, the CNT nanocomposite raw material has mechanical properties, conductivity properties, electrical conductivity, heat dissipation, high strength, light weight, wear resistance, electromagnetic wave removal, etc., and the CNT nanocomposite raw material includes PCM capsule powder, Composite plastic using a composition corresponding to 12 to 13 parts by weight, 8 to 9 parts by weight, and 10 to 12 parts by weight of organic metal polymer and polypropylene resin based on 100 parts by weight of CNT nanotube (Carbon Nanotube). As it is provided in the form of resin, it not only improves adhesion when filling the reinforcing material, but also heat diffusion and heat transfer by the PCM capsule powder for the latent heat of the wall or floor where wood is used, and the heat dissipation effect of the CNT nanocomposite. Not only can the emission efficiency to the outside be improved, but also a solid connection between the undercoat layer and the topcoat layer is maintained uniformly at the temperature of the region where the above-described undercoating composition and overcoating composition meet during incomplete curing during the manufacturing process. It may also serve to provide a retaining structure.

On the other hand, the thermal conductive adhesive is a thermal conductive adhesive that additionally contains graphene fibers and has excellent adhesiveness and thermal conductivity. As a thermal conductive adhesive, a small amount of nano-sized fine graphene fibers as a conductive filler (within 5% by weight of the total weight) By providing a thermally conductive adhesive that exhibits remarkably high thermal conductivity that conventional thermally conductive adhesives do not exhibit and at the same time has excellent adhesiveness and heat dissipation characteristics, adhesion performance can be improved through thermal stabilization between both sides of the wood forming surface. .

The eco-friendly adhesive having such a composition uses only about half of the amount of conventional adhesive based on the adhesion area of the same wood, and it is preferable to additionally perform a heating process at about 40 to 60 ° C. to speed up the drying time.

When the adhered surface is wood, it is preferable to heat-dry with a gas torch or the like after the first application so as to form a thin film, and then perform a top coating process corresponding to the second application.

Since the eco-friendly adhesive according to the present invention has excellent adhesive strength even in the presence of some moisture, it can be used regardless of humidity, and only the amount of the main agent and the hardener to be used is mixed immediately before use, and all mixed adhesives can be used.

The eco-friendly adhesive according to the present invention is a plant-based, non-toxic, eco-friendly, novel material made by extracting essence from the leaves and stems of plants (more than 10 species such as trees and grasses). It is a high-performance, multi-functional adhesive that maintains strong adhesion: 40Kgf/cm2, and excellent solidity: 99% or more when completely dry.

In addition, the eco-friendly adhesive according to the present invention is environmentally friendly, that is, non-toxic and odorless ① No detection of formaldehyde: T-VOC (total volatile organic compounds) emission less than 0.1mg / ㎡, h (Korea Testing & Research Institute test completed) , ② Heavy metal non-detection, no smell (Korea Testing & Research Institute test completed) ③ Notice standard: formaldehyde 0.12mg/㎡, toluene 0.08mg/㎡, total volatile organic compounds 4mg/㎡ or less (Korean Agency for Technology and Standards July 2010 It has the characteristics of the later applicable notice standards).

In addition, the eco-friendly adhesive according to the present invention is characterized by ④ excellent durability: water resistance, alkali resistance, non-chemical resistance, bending resistance, abrasion resistance, ⑤ excellent adhesive strength: stainless steel 0.59N/㎟, wood 1.93N/㎟, PVC 0.50N/㎟ have

Next, look at the [top coating process (S600)]. The color topcoat paint is applied before the eco-friendly adhesive is completely cured, but the resin composition used includes 30 to 40 parts by weight of an aliphatic polyisocyanate curing agent based on 100 parts by weight of a polyester main resin having a viscosity of 1,500 to 2,500 (cps/25℃). A top coating composition is used, but the aliphatic polyisocyanate curing agent is at least one selected from the group consisting of methylene diisocyanate, isophorone diisocyanate, and cyclohexyl diisocyanate, hexamethylene diisocyanate, and isobornyl diisocyanate, The polyester main resin is prepared by using 14 to 17 parts by weight of isophthalic acid, 23 to 24 parts by weight of adipic acid, and 24 to 25 parts by weight of neopentyl glycol, so it is recommended to use it as an eco-friendly paint composition with a low VOC content. desirable.

Next, look at the [top surface coating process (S700)].

A coating process for forming a flame retardant waterproof layer is performed on the upper surface of the wood on which the top coat layer is formed. The flame retardant waterproof layer used in the present invention is to form a non-flammable waterproof layer by additionally applying the above-described eco-friendly adhesive and liquid elastic coating material to the upper surface of the wood on which the top coat layer is formed, in addition to local damage to the top coat layer, It can provide an eco-friendly adhesive layer, airtightness of a multi-layer structure between top coat layers, and an effect of matching a uniform height when there is an irregular surface of wood.

The elastic coating material is composed of a water-soluble urethane coating material, which is sprayed on the top using the adhesive strength of the top coating composition used for wood, and then the water-soluble urethane coating material is applied three or more times before it hardens, and the roll coating is dried by hot air and rolled. You can keep it flat while doing it.

In the present invention, based on 100 parts by weight of the water-soluble urethane coating material constituting the elastic coating material, 2 to 3 parts by weight of a flame retardant, 2 to 3 parts by weight of a sunscreen, and 4 to 6 parts by weight of an ultraviolet curable paint are mixed and applied. The flame retardant used in the present invention uses any one or a mixture of two or more of antimony molybdate, aluminum hydroxide, molybdenum oxide, and magnesium hydroxide. The coating layer formed as described above may prevent damage to wood due to external heat and ultraviolet rays, as well as prevent absorption of external water and moisture into wood.

Next, looking at the [printing process (S700a)], by performing the printing process on the upper coating layer before the [UV irradiation process (S800)], the printing layer on the flame retardant waterproof layer, which is the coating layer produced by the [top coating process (S700)] After this is formed, it is possible to minimize interference with the formation of the flame retardant waterproof layer due to the printed layer through a UV irradiation process.

The printed patterns in the printing process may be various, such as wood grain patterns, and the printing paint may be an eco-friendly UV printing paint.

Next, look at [UV irradiation process (S800)].

In the elastic coating material containing the curable paint in the top coating process (S700), the UV curable paint is formed of an acrylic resin, and in the UV irradiation process (S800), the UV curable paint is non-uniform. In order to do this, an air spraying process using air pressure is additionally performed between steps S700 and S800, and after the air spraying process, a UV light source is irradiated with wood through a UV irradiator and cured to complete eco-friendly oil penetration wood. can

Through this process, it is possible not only to realize the degree of painting and coating to the desired degree, but also to overcome the difficult disadvantages of painting or coating after infiltrating oil into wood, in a state where oil penetrates the entire wood, It has anti-warping/crack/discoloration effects, and the waterproof effect can be improved.

In other words, the insect repellent effect can provide an effect that can interfere with all stages, such as insect repellents that interfere with various growth stages of insects, that is, egg laying, larvae entering, and adult insects entering.

<Step 4>

Next, a cutting and cutting process may be performed to manufacture the molding board impregnated with the eco-friendly oil as an external frame for manufacturing kitchen furniture. In this case, the kitchen furniture may be, for example, a sink, a cupboard, a kitchen cabinet, or a dining table, and may be, for example, a household sink.

The outer frame is a panel forming the overall shape of the kitchen furniture, that is, a household sink, and may mean, for example, a flat plate forming the top, front, left and right sides, and pillars forming the side. The method used for cutting and cutting is not particularly limited, and may be performed according to known techniques commonly used in the art.

<Step 5>

It is possible to form an external frame for manufacturing a sink by bonding and assembling the cut molding board with a bond harmless to the human body or an industrial iron member. Subsequently, a sink may be manufactured by bonding and grafting a mixture of an inner material, for example, vermiculite, natural gypsum, and loess to the cut outer frame.

Meanwhile, an antibacterial plastic plate may be laminated on the molding board forming the upper plate of the sink. The antibacterial plastic plate is produced by extruding a compound composition including polyvinyl chloride (PVC), metal hydroxide-based particles, carbon black, surface-modified zinc oxide nanoparticles, silver-zinc zeolite, filler, and pigment. In addition, the surface of the surface-modified zinc oxide nanoparticles may be coated with a silane-based compound containing a thiol group.

Thereafter, the exterior of the sink may be coated and finished using an eco-friendly paint.

The sink manufacturing method is not limited thereto, and any known technique commonly used in the art may be used.

As described above, preferred embodiments of the present invention have been disclosed in the present specification and drawings, and although specific terms have been used, they are only used in a general sense to easily explain the technical content of the present invention and help understanding of the present invention. However, it is not intended to limit the scope of the present invention. It is obvious to those skilled in the art that other modified examples based on the technical spirit of the present invention can be implemented in addition to the embodiments disclosed herein.

Claims (3)

A first step of preparing a wood raw material and a functional composition having moisture-proofing and mold-inhibiting effects; A second step of manufacturing a wood board by subjecting a mixture obtained by mixing the wood raw material, the functional composition, and a thermosetting adhesive to a molding process; A third step of manufacturing a molding board impregnated with eco-friendly oil through an infiltration method of infiltrating the surface of the wooden board with eco-friendly oil; A fourth step of cutting the molding board permeated with the eco-friendly oil into a panel shape for making a sink, and then cutting; And, a fifth step of bonding and assembling the cut molding board with a bond harmless to the human body or an industrial iron member to form an external frame for manufacturing a sink; Including,
The third step,
For the wood board, sanding process (S100), hot air heating process (S200), eco-friendly oil penetration process (S300), undercoating process (S400), eco-friendly adhesive coating process (S500), top coating process (S600), top surface coating process (S700), a printing process (S700a), and a UV irradiation process (S800),
[Sanding process (S100)] cleans each surface, which is the oil-attached surface of the wooden board, which is an adhesive, and then removes dust, oil stains, paint, stains, contamination, and foreign substances, and among sandpaper and sanding machines to enhance oil penetration. Perform a surface treatment operation to create at least one scratch,
[Hot air heating process (S200)] is a condition in which water is removed from the surface to which oil is to be penetrated through hot air heating, but the sanded wood is put into the hot air heating chamber so that the temperature of the hot air heating chamber is 180 to 250 ° C. heated with hot air for 45 to 75 minutes,
[Eco-friendly oil penetration process (S300)] uses a roller-type or brush-type application device as a painting tool to infiltrate eco-friendly oil into the wood board, or engraves or embosses between the sanding process (S100) and the hot air heating process (S200) , When additional work is performed on the painted surface including openwork, use a spray spraying device. Eco-friendly oil is a mixture of silicone oil, aromatic base oil, and paraffin base oil in a ratio of 1: 1: 0.5 parts by weight, and citrus oil is used as insect repellent oil. It is used by mixing 2 to 3 parts by weight based on 100 parts by weight of oil mixed,
The number of times of application of eco-friendly oil is three times for 45 to 50㎡ per 10L in order to enhance the natural color and grain of wood and to ensure the efficiency and durability of water repellency, waterproofing, and insect repellent, and In order to penetrate more quickly and deeply, the outer surface of the roller-type applicator is made of soft melt or cloth, and the material of the brush-type applicator is made of melt or cloth, and the process of applying oil to the outside and rubbing repeatedly on the painted surface additionally,
In the eco-friendly oil penetration process, the touch drying time is 3 hours and the complete drying time is 24 hours.
In the [undercoating process (S400)], an undercoating composition prepared by mixing a modified unsaturated polyester resin and a crosslinkable monomer is undercoated on the outer surface of the wooden board subjected to the eco-friendly oil penetration process, and the coating composition is composed of a polyhydric alcohol and After preparing an intermediate by reacting a polybasic acid at 35 to 45:45 to 55 parts by weight, 2 to 3 parts by weight of a polyamine based on 100 parts by weight of the prepared intermediate is reacted to prepare an amine-modified unsaturated polyester resin, amine-modified unsaturated polyester Based on 100 parts by weight of the resin, 6 to 7 parts by weight of dipentaerythritol polyacrylate and 10 to 13 parts by weight of trimethylolpropane triacrylate were polymerized to prepare a modified unsaturated polyester resin, and elastic force with respect to 100 parts by weight of the paint composition A mixture of 2 to 3 parts by weight of graphene fibers and 4 to 5 parts by weight of cellulose nanofibers is used to increase the over-tension. Performs an eco-friendly adhesive coating process,
[Eco-friendly adhesive coating process (S500)] is a "non-toxic eco-friendly urethane resin-based curing agent" based on various vegetable extracts and vegetable oils as an eco-friendly adhesive. Mix, apply evenly to the adherend surface with a small brush when the adherend surface is flat, or using a disposable syringe when bonding a gap, and the two-component eco-friendly adhesive composition as an eco-friendly adhesive is mainly composed of polyurethane prepolymer 100 parts by weight 23 to 24 parts by weight of plant essence, 13 to 15 parts by weight of hybrid resin mixture, 7 to 8 parts by weight of diluent, 4 to 6 parts by weight of thickener, 7 to 9 parts by weight of plasticizer, 12 to 15 parts by weight of graphene, 5 flame retardants It is formed by adding and mixing from 7 parts by weight to 7 parts by weight, and the curing agent is mixed in a weight ratio of 4: 6 with respect to the formed main material to form an eco-friendly adhesive layer. , At least one of mulberry extract, Benjamin extract, garlic extract, ginseng mugwort extract, and plum extract is mixed and used, and the hybrid resin mixture is CNT nano-based material, PLA (Poly Lactic Acid) resin, cellulose Using nanofibers and carbon fibers, stirring at a weight ratio of 7 to 8: 18 to 24: 11 to 15: 5 to 7 to prepare a gel type having a viscosity, and then stirring the filler in the gel type composition The CNT nano-based material is formed to improve adhesion with the outer surface of the damaged part, and the CNT nanocomposite raw material and the thermally conductive adhesive are added and mixed at a weight ratio of 24 to 27: 9 to 12. In addition to CNT nanotubes, PCM capsule powder, organometallic polymer, and polypropylene resin are used as raw materials for CNT nanocomposites, in a weight ratio of 100 parts by weight to CNT nanotubes (Carbon Nanotube). 12 to 13 parts by weight, 8 to 9 parts by weight, and 10 to 12 parts by weight based on the composition used to form a composite plastic resin, and the thermally conductive adhesive additionally contains graphene fibers. A thermally conductive adhesive with excellent adhesiveness and thermal conductivity. As a thermally conductive adhesive, a conductive filler containing nano-sized fine graphene fibers within 5% by weight of the total weight is used. To speed up the drying time of eco-friendly adhesives, 40 A heating process is additionally performed at about 60 ° C., and if the adhered surface is wood, after the first application to form a thin film, heat drying with a gas torch, and then a top coating process corresponding to the second application is performed,
In the [top coating process (S600)], the color top coating is applied before the eco-friendly adhesive is completely cured, but the resin composition used is aliphatic based on 100 parts by weight of a polyester main resin having a viscosity of 1,500 to 2,500 (cps / 25 ° C) A top coat composition containing 30 to 40 parts by weight of a polyisocyanate curing agent is used, wherein the aliphatic polyisocyanate curing agent is a group consisting of methylene diisocyanate, isophorone diisocyanate, and cyclohexyl diisocyanate, hexamethylene diisocyanate, and isobornyl diisocyanate At least one selected from is used, and the polyester main resin is prepared from 14 to 17 parts by weight of isophthalic acid, 23 to 24 parts by weight of adipic acid, and 24 to 25 parts by weight of neopentyl glycol,
[Top surface coating process (S700)] performs a coating process for forming a flame retardant waterproof layer on the upper surface of the wood on which the top coat layer is formed, but the flame retardant waterproof layer used is a liquid with the above-described eco-friendly adhesive on the upper surface of the wood on which the top coat layer is formed. The elastic coating material of is additionally applied to form a non-combustible waterproof layer, and the elastic coating material is composed of a water-soluble urethane coating material, so that after spraying on top of the top coating composition using the adhesive strength of the top coating composition used for wood, the water-soluble urethane coating material before it hardens is applied three or more times and dried with hot air to maintain flatness while rolling roll coating, based on 100 parts by weight of the water-soluble urethane coating material constituting the elastic coating material 2 to 3 parts by weight of flame retardant, sunscreen 2 to 3 parts by weight and 4 to 6 parts by weight of UV curable paint are mixed and applied, and the flame retardant used is any one or a mixture of two or more of antimony molybdate, aluminum hydroxide, molybdenum oxide, and magnesium hydroxide. To, a method for manufacturing a household sink. According to claim 1,
In the first step, the wood raw material, characterized in that it comprises a paste containing diatomaceous earth, charcoal powder and ocher for a far-infrared radiation effect and a deodorizing effect, domestic sink manufacturing method. A household sink manufactured by the method for manufacturing a household sink according to claim 1 or 2.