KR100729503B1 - Environment-friendly board using green tea and wood-based plate-shaped product comprising the same - Google Patents

Abstract

The present invention relates to an eco-friendly board using green tea or green tea foil, and a wooden plate-like product to which the green tea or green tea foil is applied, wherein the weight ratio of green tea or green tea foil is 2: 1 to 9: 1 on Wood Fiber or Wood Particle. It provides a wood-based board produced by mixing and a wood-based product produced by using the same.

The wood-based board of the present invention is an eco-friendly board made using 100% green tea or green tea foil, which is an inexpensive pure natural plant, and satisfies the TVOC emission amount of 0.1 mg / m 2 hr or less, HCHO dispersion amount of 0.03 mg / m 2 or less By doing so, both environmental and economic aspects can be solved at the same time.

Green tea, board

Description

Environment-friendly board using green tea and wood-based plate-shaped product comprising the same}

The present invention relates to an eco-friendly wood board and a wood plate product applied thereto, and more particularly, to a wood board made by mixing green tea or green tea foil with wood fibers or wood particles, and a wood board product produced using the same. .

Recently, there has been a restriction on the use of building materials that emit large amounts of pollutants. Scavenger used in board manufacturing to reduce productivity due to the low molar ratio of UF (Urea Formaldehyde) resin, and to remove TVOC (Total Volatile Organic Compounds) and HCHO (formaldehyde) In most cases, the liquid form not only increases the water content of the board in the manufacturing process, but also is expensive and carries a large additional cost.

Currently, the plywood and wood board industry is focusing on the development of resin synthesis technology in relation to indoor air quality management, but the increase in manufacturing cost caused by securing the production products of the same physical properties remains a big problem. In addition, in the case of a charcoal-type board product that is developed as a conventional eco-friendly board, re-emission of TVOC and HCHO is a problem.

Accordingly, an object of the present invention is to provide a wood-based board and a wooden board product using the same that can solve both environmental and economic aspects by using inexpensive natural materials instead of the scavenger that forms the existing high price range It is.

The present invention provides a wood-based board produced by mixing green tea or green tea foil in a weight ratio of 2: 1 to 9: 1 to wood fiber or wood particles. .

The green tea or green tea foil is preferably mixed in a powder form of 120 Mesh (0.117 mm) or less in consideration of uniform mixing.

The wood board to be produced in the present invention is a wood board such as MDF (Medium Density Fiberboard), HDF (High Density Fiberboard), PB (Particle Board).

In addition, the present invention provides a wooden plate-like product such as ondol floor, reinforced floor, wall made using the wood-based board.

The wood-based board of the present invention is an eco-friendly board made using 100% green tea or green tea foil, which is an inexpensive pure natural plant, and satisfies the TVOC emission amount of 0.1 mg / m 2 hr or less, HCHO dispersion amount of 0.03 mg / m 2 or less By doing so, both environmental and economic aspects can be solved at the same time.

In addition, the wood-based board of the present invention is an eco-friendly board that eliminates the re-emission of TVOC and HCHO that may occur in the charcoal board products that are developed as a conventional eco-friendly board, a low boiling point material using green tea or green tea foil By chemically adsorption, more stable eco-friendly boards can be manufactured.

In addition, by adding the function of green tea can remove heavy metals, polyphenols contained in green tea is easily combined with nicotine to remove odors.

Catechin contained in green tea or green tea foil according to the present invention is a form of flavonoids in polyphenols, which has a rich taste, and has a number of hydroxyl groups (-OH) due to its chemical structure. You can do it easily. Due to these properties, the body has antioxidant activity to remove heavy metals or remove free radicals.

In addition, tannin, which is contained in green tea or green tea leaves, is composed of six kinds of catechins, which greatly influences the color, aroma, and taste of tea, and is also called polyphenol. Combines with caffeine at low temperatures to form insoluble chemicals.

The catechin or tannin physicochemically removes TVOC or HCHO substances by antioxidant and adsorption mechanisms, and its reactivity is increased by external heat, thereby making a drastic contribution to TVOC and HCHO reduction.

In the present invention, TVOC refers to volatile organic compounds appearing between hexane (Hexane) and hexadecane (Hexadacane).

Hereinafter, the wood board according to the present invention will be described in more detail.

Eco-friendly wood-based board of the present invention is produced by mixing the wood fiber or wood particle raw material and the powder of green tea or green tea foil having a chemical adsorption function of TVOC and HCHO evenly mixed in an appropriate ratio.

At this time, it is preferable to mix the mixing ratio of the wood fiber or wood particle material and the green tea or green tea powder in a weight ratio of 2: 1 to 9: 1. In the preparation of wood fiber or wood particle material, the more the mixing ratio of green tea or green tea powder powder is, the better the HCHO reduction effect, but since the specific gravity of the base layer is gradually lowered, it becomes difficult to manufacture the board, so it is impossible to add more than 2: 1. If the mixing ratio is small, the green tea effect cannot be expected.

In order to uniformize the mixing of the green tea and green tea foil raw materials used as the environmentally friendly material, the powdering of the material is important, and when the powder is pulverized to about 120 Mesh (0.117 mm) or less, there is no difficulty in use.

When added to the powder of green tea or green tea foil, it has the function of deodorization and various toxic removal together to freshen the air.

Particleboard is a plate-like product with a density of 0.5 g / cm3 or more and 0.9 g / cm3 or less that is molded and hot pressed by adding a synthetic resin adhesive, mainly made of wood and other plant fiber particles, that is, cutting or crushed pieces. to be.

The synthetic resin of the adhesive used at this time is one selected from the group UF (Urea Formaldehyde), MUF (Melamine Urea Formaldehyde), PUF (Phenol Urea Formaldehyde), MF (Melamine Formadehyde), PF (Phenol Formaldehyde).

MDF is a wood plate product with a density of 0.4 to 0.8 g / cm 3 made by combining wood fiber obtained by dissolving at high temperature with a wood material as a main raw material with a synthetic resin adhesive.

HDF is a high-density fiber board with a density of 900 kg / m 3 or more, which is a wooden board product much higher than general MDF in terms of strength.

As such, it is possible to manufacture eco-friendly plate products to be obtained through boards made using eco-friendly materials and synthetic resins.

When the thickness of the eco-friendly wood board according to the present invention is manufactured in various thicknesses from 3 mm to 15 mm at least, and applied to an apartment or house floor or wall, Japanese HCHO regulations 0.005, which is stricter than 0.03 mg / ㎡hr, required by the construction company. ㎎ / ㎡hr Fig also meets, enables the production of MDF, HDF that satisfy the highest grade of F ★★★★ Japan, and can produce PB of E ₁ rating reliably, and the side surfaces and the surface coating of PB In case of implementation, it can satisfy 0.03 mg / m2hr required by the construction company.

EXAMPLE

MDF using green tea according to the present invention was produced as follows.

The raw material from which the bark of wood is removed through the peeling process is crushed by a crusher with a rotating drum attached with a blade through a conveyor to make chips, which is then saturated with steam of 7 to 10 ㎏ / ㎠ After steaming for a few minutes under the condition of using a refiner (refiner) to prepare a wood fiber (Wood Fiber).

On the other hand, green tea was ground to produce a powder of about 120 Mesh or less.

Next, after mixing the green tea powder with a weight ratio of 5: 1 to the prepared wood fibers, 50% by weight of melamine resin and so that the content ratio (the ratio of the weight of the adhesive solid to the total weight of the wood material) in a high-speed mixer, 12% An adhesive consisting of 50% by weight of urea resin was applied.

This was dried by hot air in a dryer. At this time, the water content of the applied fiber and green tea powder was dried to 10% or less.

Next, the green tea powder mixed particles to which the adhesive was applied were molded into a mat shape using a mat molding apparatus.

Next, the molded particle mat was cured by hot pressing in a continuous press. At this time, the thermal pressure conditions were set to a pressure of 30 to 40 kgf / cm 2, a temperature of 180 to 210 ° C., and a time of 15 to 28 seconds / mm.

Finally, the heat-cured particle mat was cooled and cut to a standard dimension, and after the grinding process, an MDF using green tea was prepared according to the present invention.

[Comparative Example]

It was prepared in the same manner as in Example except that the green tea powder was not mixed.

[Test Example]

Table 1 compares the TVOC and HCHO dissipation with respect to the MDF of the Examples and Comparative Examples, wherein the TVOC dissipation was measured by the ISO6000-3, ISO6000-6 measurement method, HCHO dissipation was measured by KSF3111 hazardous compound measurement method .

As shown in Table 1, the MDF of the present invention in the TVOC dissipation amount was only 1/5 level of the comparative example MDF, the MDF of the present invention in the HCHO dissipation amount was 1/11 level.

Comparative example Example TVOC 0.15 mg / ㎡hr 0.03 mg / ㎡hr HCHO 0.308 mg / ㎡hr 0.028 mg / ㎡hr

As described above, the present invention manufactures an eco-friendly board, but after mixing the green tea or green tea powder in an appropriate proportion to the wood flour or wood fiber or particle raw material to remove the free HCHO and TVOC released from the synthetic resin during the manufacturing process and then commercialized By providing a wooden board and floor or wall products using the same, it is possible to produce free HCHO as well as eco-friendly products with minimal TVOC emissions.

Claims (5)

Wood-based boards produced by mixing green tea or green tea foil in a weight ratio of 2: 1 to 9: 1 on wood fibers or wood particles. The wood board according to claim 1, wherein the green tea or green tea foil is mixed in a powder form of 120 Mesh (0.117 mm) or less. The wood board according to claim 1, wherein the wood board is a medium density fiberboard (MDF), a high density fiberboard (HDF), or a particle board (PB). A wood plate product produced using the wood board according to any one of claims 1 to 3. 5. The wood board product according to claim 4, wherein the wood board product is an ondol floor, a reinforced floor or a wall.