KR20220046871A - Manufacturing method of processed wood - Google Patents

Abstract

The present invention relates to a method for manufacturing processed wood to mass-produce and supply of eco-friendly processed wood. According to the present invention, the method comprises the following steps: pulverizing waste wood to acquire a pulverized material in a sawdust form; mixing an adhesive with the acquired pulverized material; pressing and drying the mixture of the adhesive and the pulverized material to process the mixture into a plate-shaped planar material; cutting the planar material processed into a plate shape into a desired size; and lapping the outer surface of the cut processed planar material by using paper or sheet paper to complete the processed wood. The adhesive is a starch adhesive formed by mixing tourmaline powder, carboxymethyl cellulose, sodium silicate, zeolite, a Houttuynia cordata extract, methyl p-hydroxybenzoate, a star anise extract, and citric acid in a mixture of flour, shellac, loess, alpha starch, and water.

Description

Manufacturing method of processed wood {Manufacturing method of processed wood}

In general, as processed wood, MDF (Medium Density Fiberboard), HDF (High Density Fiberboard), and Low Density Fiberboard (LDF) are mainly used.

Looking at an example of the conventional manufacturing method of processed wood, the waste wood is collected, then dried and pulverized to make sawdust. A method of producing compressed wood, that is, processed wood, was used by obtaining a pulverized product of sawdust, mixing the pulverized material with an adhesive, putting the mixture into a molding die of a compressor, pressurizing and heating it. At this time, it is also possible to manufacture processed wood having various colors by adding a dye or the like to the adhesive.

However, as an adhesive for compressing and bonding the pulverized product obtained by grinding with sawdust as described above, in consideration of adhesive strength and fast bonding strength, an adhesive harmful to the human body containing a large amount of formaldehyde, dioxin, etc., which are known to be harmful to the human body, cement Mixed adhesives, adhesives containing resin binders, etc. are generally used, and are being turned away from consumers who are seeking eco-friendly furniture and living environments in recent years.

Therefore, furniture manufactured using natural wood, etc. is preferred rather than reclaimed wood. However, furniture manufactured using such natural wood has a problem in that the price is higher than that of reclaimed wood.

In addition, as the demand for processed wood manufactured using an adhesive that is harmful to the human body decreases, there is a problem in that it is not possible to find a recycling place for waste furniture, so it must be disposed of.

The present invention has been devised in view of the above points, and it is an object of the present invention to provide an environmentally friendly processed wood manufactured by recycling waste furniture and minimizing harmful components, and a method for manufacturing the same.

Processed wood manufacturing method of the present invention for achieving the above object, comprising the steps of pulverizing waste wood to obtain a pulverized product in the form of sawdust; mixing an adhesive with the obtained pulverized material; processing the mixture into a plate-type plate by pressing and drying the mixture of the adhesive and the pulverized material; Cutting the processed plate material processed into a plate shape to a desired size; and finishing the processed wood by wrapping the outer surface of the cut processed board using paper or sheet paper, wherein the adhesive is a mixture of flour, shellac, loess, alpha starch and water and tourmaline powder , carboxymethyl cellulose, sodium silicate, zeolite, eoseongcho extract, methyl paraoxybenzoate, octagonal hyanghyang extract and characterized in that the starch adhesive formed by mixing citric acid.

Here, the starch adhesive is prepared by adding water to a mixture of 400 g of wheat flour, 200 ml of shellac, 130 g of loess, and 50 g of alpha starch, and then adding water to 100 ° C while stirring and boiling for 9 to 11 minutes, Here, 50 g of tourmaline powder, 20 g of carboxymethyl cellulose, 20 ml of sodium silicate, 30 g of zeolite, 50 ml of eoseongcho extract, 10 ml of methyl paraoxybenzoate, 20 ml of octagonal extract, 20 ml of citric acid were mixed in comparison with 400 g of wheat flour. it is preferable

In addition, it is preferable to further include the step of removing impurities contained in the pulverized product, and in the step of removing impurities, it is preferable to separate the metal material contained in the pulverized product by using a magnet.

In addition, the process wood of the present invention for achieving the above object, the step of pulverizing the waste wood to obtain a pulverized product in the form of sawdust; mixing an adhesive with the obtained pulverized material; processing the mixture of the adhesive and the pulverized material into a plate-shaped plate by pressing and drying the mixture; Cutting the processed plate material processed into a plate shape to a desired size; and finishing the processed wood by wrapping the outer surface of the cut processed board using paper or sheet paper, wherein the adhesive is a mixture of flour, shellac, loess, alpha starch and water and tourmaline powder , carboxymethyl cellulose, sodium silicate, zeolite, eoseongcho extract, methyl paraoxybenzoate, octagonal hyanghyang extract, and characterized in that it is prepared using a starch adhesive formed by mixing at least two or more of citric acid.

According to the manufacturing method of the processed wood of the present invention, a starch adhesive formed by mixing eco-friendly ingredients with a pulverized product of pulverized waste wood such as waste furniture in the form of sawdust is mixed, then pressed (compressed) and dried to form a plate shape Can produce wood.

The processed wood produced in this way is manufactured by using a starch adhesive containing a large amount of eco-friendly ingredients, so it is possible to minimize the occurrence of components harmful to the human body as in the prior art, and while having sufficient adhesion and strength, it is eco-friendly using waste materials It is possible to mass-produce and supply processed wood.

Therefore, there is an advantage that not only solves environmental problems through recycling of waste wood, but also provides eco-friendly processed wood at a low price.

In addition, since waste wood such as waste furniture can be completely recycled, costs associated with incineration can be reduced.

In addition, in the case of the processed wood according to the present invention, it is possible to re-pulverize and recycle.

1 and 2 are views for explaining a method of manufacturing a processed wood according to an embodiment of the present invention.
FIG. 3 is a view for explaining a state in which the plywood processed by compression as shown in FIG. 2 is cut to a desired size;
Figure 4 is a cross-sectional view showing the processed wood manufactured by the method for manufacturing the processed wood according to an embodiment of the present invention.

Hereinafter, the content of the present invention will be described in more detail. However, the scope of the present invention is not limited only to the following examples, and includes modifications of technical ideas equivalent thereto.

An artificial wood and a manufacturing method thereof according to an embodiment of the present invention will be described as follows.

Referring to FIG. 1 , a pulverized product 10 that is pulverized in the form of sawdust by using a wood pulverizer by collecting waste wood such as a sink and furniture is obtained. Here, the wood crusher includes an engine type, an electric type, and the like, and various types of wood crushers (shredders) widely used in industry can be used.

The mixture 30 is obtained by mixing the adhesive 20 with the pulverized product 10 obtained by pulverizing as described above. Here, the adhesive 20 is a mixture of wheat flour, shellac, loess, alpha starch and water, tourmaline powder, carboxymethyl cellulose, sodium silicate, zeolite, seaweed extract, methyl paraoxybenzoate, octagonal hyang extract and citric acid. It is preferable that it is a starch adhesive formed by mixing.

In addition, more specifically, the starch adhesive may be formed by the following ratio and method. That is, the starch adhesive is prepared by adding water to a mixture of 200 ml of shellac, 130 g of loess, and 50 g of alpha starch, based on 400 g of flour, and then adding water to 100 ° C. while stirring, and boiling for 9 to 11 minutes. , Here, 50 g of tourmaline powder, 20 g of carboxymethyl cellulose, 20 ml of sodium silicate, 30 g of zeolite, 50 ml of eoseongcho extract, 10 ml of methyl paraoxybenzoate, 20 ml of octagonal fenugreek extract, 20 ml of citric acid are added and mixed in comparison with 400 g of the wheat flour. can be formed.

Here, the mixing ratio of water may vary depending on conditions such as season or temperature, and may be adjusted while checking the viscosity of the starch adhesive.

The starch adhesive 20 having the above components is made of eco-friendly elements, and has beneficial components for the human body, such as anion release, antibacterial effect, and deodorizing power, while having advantages such as shellac and carboxymethyl cellulose. By controlling and strengthening the adhesion of silver starch, it is possible to secure sufficient adhesion while being environmentally friendly.

On the other hand, after obtaining the mixture 30 as described above, as shown in FIG. 2 , the mixture 30 is put into a predetermined mold 41 and dried while being pressurized for a predetermined pressure and time using the pressing unit 43 . For drying, a separate heating unit may be provided in the frame 41 or the pressurization unit 43 to heat the mixture 30 in a pressurized state so that it can be dried faster. At this time, the heating temperature is suitable about 20 to 50 ℃, the pressing temperature and pressing pressure can be appropriately applied in consideration of the amount of the mixture, the thickness of the processed wood to be obtained, the place of use, etc., and is not limited by specific values.

As described above, the plate-shaped plate material 50 can be obtained by pressing and drying in the mold 41 using the pressing unit 43 .

And after cutting the plate material 50 to a desired size as shown in FIG. 3, the outer surface including the cut surface is partially or entirely over the lapping process using paper or sheet paper 51 as shown in FIG. 4 to finally As a result, it is possible to produce the processed wood 60 as shown in FIG. 4 . That is, after cutting the plate material 50 according to the standard, the consumer needs to post-processing by wrapping the sheet paper 51 on the side and front and back surfaces of the plate material 50 by 180 to 360 degrees and wrapping it using a lapping machine. It becomes possible to manufacture standardized processed wood that does not exist.

In addition, although omitted from the drawings, a large magnet is approached to the pulverized material 10 obtained by pulverizing the waste wood as shown in FIG. ) is allowed to pass slowly and the metal material included in the pulverized product 10 is separated by a magnet, thereby obtaining a more environmentally friendly pulverized product.

Hereinafter, the manufacturing process of the starch adhesive used in the method for manufacturing artificial wood of the present invention as described above and the effects of the prepared starch adhesive will be described in detail by comparing the experimental examples with the comparative examples.

Example 1: Preparation of Starch Adhesive

After adding water to a mixture of 400 g of wheat flour, 200 ml of shellac, 130 g of loess, and 50 g of alpha starch, the mixture was heated to 100° C. while stirring and boiled for 10 minutes. Herein, 50 g of tourmaline powder, 20 g of carboxymethyl cellulose, 20 ml of sodium silicate, 30 g of zeolite, 50 ml of fish extract, 10 ml of methyl paraoxybenzoate, 20 ml of octagonal extract, 20 ml of citric acid were added and mixed to prepare a starch adhesive.

Comparative Example 1: Preparation of starch adhesive without shellac

Water was added to a mixture of 600 g of wheat flour, 130 g of loess soil, and 50 g of alpha starch, and then heated to 100° C. while stirring, and boiled for 10 minutes. Here, 50 g of tourmaline powder, 20 g of carboxymethyl cellulose, 20 ml of sodium silicate, 20 ml of sodium silicate, 30 g of zeolite, 50 ml of seaweed extract, 10 ml of methyl paraoxybenzoate, 20 ml of octagonal extract, 20 ml of citric acid were added, and then mixed and not added with shellac. A starch adhesive was prepared.

Comparative Example 2: Preparation of starch adhesive without alpha starch

After adding water to a mixture of 400 g of wheat flour, 200 ml of shellac, and 130 g of loess, the mixture was heated to 100° C. while stirring and boiled for 10 minutes. To this, 50 g of tourmaline powder, 20 g of carboxymethyl cellulose, 20 ml of sodium silicate, 30 g of zeolite, 50 ml of eoseongcho extract, 10 ml of methyl paraoxybenzoate, 20 ml of octagonal extract, 20 ml of citric acid were added, and then mixed and did not add alpha starch. A non-starch adhesive was prepared.

Comparative Example 3: Preparation of starch adhesive without adding tourmaline

After adding water to a mixture of 400 g of wheat flour, 200 ml of shellac, 130 g of loess, and 50 g of alpha starch, the mixture was heated to 100° C. while stirring and boiled for 10 minutes. Herein, 20 g of carboxymethyl cellulose, 20 ml of sodium silicate, 30 g of zeolite, 50 ml of eosincho extract, 10 ml of methyl paraoxybenzoate, 20 ml of octagonal extract, 20 ml of citric acid were added, and then mixed to prepare a starch adhesive without tourmaline. did

Comparative Example 4: Preparation of starch adhesive without addition of eoseongcho extract

After adding water to a mixture of 400 g of wheat flour, 200 ml of shellac, 130 g of loess, and 50 g of alpha starch, the mixture was heated to 100° C. while stirring and boiled for 10 minutes. Here, 50 g of tourmaline powder, 20 g of carboxylmethyl cellulose, 20 ml of sodium silicate, 30 g of zeolite, 10 ml of methyl paraoxybenzoate, 20 ml of octagonal extract, and 20 ml of citric acid were added, and then mixed to form a starch adhesive without the addition of eoseongcho extract. prepared

Comparative Example 5: Preparation of starch adhesive without addition of octagonal extract

After adding water to a mixture of 400 g of wheat flour, 200 ml of shellac, 130 g of loess, and 50 g of alpha starch, the mixture was heated to 100° C. while stirring and boiled for 10 minutes. Here, 50 g of tourmaline powder, 20 g of carboxymethyl cellulose, 20 ml of sodium silicate, 30 g of zeolite, 50 ml of fish extract, 10 ml of methyl paraoxybenzoate, and 20 ml of citric acid were added, and then mixed to form a starch adhesive without octagonal extract. prepared.

Comparative Example 6: Preparation of starch adhesive without carboxymethyl cellulose

After adding water to a mixture of 400 g of wheat flour, 200 ml of shellac, 130 g of loess, and 50 g of alpha starch, the mixture was heated to 100° C. while stirring and boiled for 10 minutes. To this, 50 g of tourmaline powder, 20 ml of sodium silicate, 30 g of zeolite, 50 ml of eosincho extract, 10 ml of methyl paraoxybenzoate, 20 ml of octagonal extract, and 20 ml of citric acid were added, and then mixed to form a starch adhesive without carboxymethyl cellulose. prepared.

Experimental Example 1: Measurement of adhesive strength of starch adhesive

The starch adhesive prepared in Example 1 and Comparative Examples 1 to 6 was applied so as to be 0.03 g/cm ² per piece of liner paper having a basis weight of 220 g/m ² in width and length of 8 mm × 100 mm, and the weight was maintained at 150 ° C. 1,140 g After heating and bonding for about 7 seconds using an iron from 30 ℃ water for 12 hours, the adhesive strength was tested using a tensile strength tester (STROGRAPH M-50, Toyo Seiki, Japan).

Table 1

Unit: N/cm ²

As a result of measuring the adhesive strength of the starch adhesive (Table 1), the adhesive strength of Example 1 and Comparative Examples 3 to 5 was not significantly different, but Comparative Example 1 and Comparative Example 6 showed significantly lower values than Example 1. .

From the above results, it was confirmed that shellac, carboxymethyl cellulose, and alpha burn powder contained in the present invention control the adhesive strength of the adhesive, and the excellent adhesive strength of the present invention was also confirmed therefrom.

Experimental Example 2: Measurement of Anion Release Amount of Starch Adhesive

In order to measure the release amount of anion of the starch adhesives prepared in Example 1 and Comparative Examples 1 to 6, COM-3010 PRO, a contact-type anion tester manufactured by Com System of Japan, was used. The measurement test was performed under the conditions of a temperature of 21° C., a humidity of 50%, and the number of anion particles in the air 62/cc.

Table 2

Unit: Ionized water/cc

As a result of measuring the anion emission amount of the starch adhesive (Table 2), Example 1, Comparative Example 1, and Comparative Examples 3 to 6 did not show a significant difference, but Comparative Example 2 showed a significantly lower value.

From the above results, it was confirmed that tourmaline released anions, and the anion-releasing effect of the present invention could be inferred therefrom.

Experimental Example 3: Measurement of antibacterial effect of starch adhesive

The antibacterial effect of Example 1 and Comparative Examples 1 to 6 was measured in the following manner.

As a standard strain, Bacillus sp. CK-1 was used. It was contacted with a nutrient broth medium (Difco) and cultured with shaking at 37° C. and 150 rpm for 18 hours. To evaluate the antimicrobial activity of each starch adhesive, it was diluted with purified water 10 times, 50 times, and 100 times (v/v) to evaluate the antibacterial activity as follows. That is, in the prepared juicy nutrient solid medium, Bacillus sp. 50 μl of the CK-1 bacterial culture was evenly spread, and 20 μl of each diluted starch adhesive was quantitatively collected, and Bacillus sp. The antibacterial activity was evaluated as follows by comparing the size of the growth inhibitory ring formed by dripping at regular intervals on the CK-1 bacterial smeared broth and culturing at 37°C for 24 hours (○: In case of death by more than 90%) , △: in the case of 50% or more killing, ×: 50% or less killing or antibacterial effect).

Table 3

As a result of measuring the antibacterial effect of the starch adhesive (Table 3), Example 1 and Comparative Examples 1 to 3, Comparative Example 5 and Comparative Example 6 showed similar values, but Comparative Example 4 showed a significantly lower antibacterial effect. showed

From the above results, it could be confirmed that the extract of Eosangi extract contained in the present invention exerts an antibacterial effect, and the excellent antibacterial effect of the present invention was also confirmed therefrom.

Experimental Example 4: Deodorization of starch adhesives

The deodorizing power of each starch adhesive prepared in Example 1 and Comparative Examples 1 to 6 was measured.

In this experimental example, ammonia (ammonia detection tube, 0.03% aqueous solution, 0.5 mL), amine (amine detection tube, 0.3% aqueous solution, 0.5 mL), mercaptan (mercaptan detection tube, 0.1% benzene solution) are used as odor sources. , using 0.1 mL) was used.

Put the starch adhesive prepared in Example 1 and Comparative Examples 1 to 6 in a sealed container, put the same amount of odor source, respectively, and after a certain period of time, the residual amount of undeodorized odor is sucked into the Gastec Detector The residual gas concentration was measured and evaluated according to the following evaluation criteria (×; 80 ppm or more, no deodorant power, △; 50 to 80 ppm slight deodorizing power, ○; 20 to 50 ppm deodorizing power, ◎; 20 ppm or less excellent deodorization).

Table 4

As a result of measuring the deodorizing power of the starch adhesive (Table 4), Example 1, Comparative Examples 1 to 4, and Comparative Example 6 showed excellent deodorizing power, but Comparative Example 5 had insignificant effect.

From the above results, it was confirmed that the octagonal hyanghyang extract contained in the present invention exhibited an excellent deodorizing effect, and from that, it was also confirmed that the excellent deodorizing effect of the present invention was obtained.

Experimental Example 5: Measurement of Viscosity of Starch Adhesive

The viscosity of the starch adhesive prepared in Example 1 and Comparative Examples 1 to 6 was measured using a 'Spindle' (60 rpm).

Table 5

Unit: cps

As a result of measuring the viscosity of the starch adhesive (Table 5), it was confirmed that the viscosity was adjusted in Example 1 and Comparative Example 3 and Comparative Example 5, and Comparative Example 1, Comparative Example 2, and Comparative Example 6 were treated with high viscosity. There was a problem in

From the above results, it was confirmed that shellac, alpha starch, and carboxymethyl cellulose contained in the present invention control the viscosity of the adhesive.

10..Pulverized material 20..Adhesive
30..Mixture 50..Plate plate
51..sheet paper 60..processed wood

Claims (5)

pulverizing the waste wood to obtain a pulverized product in the form of sawdust;
mixing an adhesive with the obtained pulverized material;
processing the mixture of the adhesive and the pulverized material into a plate-shaped plate by pressing and drying the mixture;
Cutting the processed plate material processed into a plate shape to a desired size; and
Including; wrapping the outer surface of the cut processed plate material using paper or sheet paper to complete the processed wood;
The adhesive is a mixture of wheat flour, shellac, loess, alpha starch and water, tourmaline powder, carboxymethyl cellulose, sodium silicate, zeolite, eoseongcho extract, methyl paraoxybenzoate, octagonal hyang extract and citric acid by mixing Processed wood manufacturing method, characterized in that the formed starch adhesive. According to claim 1, wherein the starch adhesive,
After adding water to the mixture of 400 g of wheat flour, 200 ml of shellac, 130 g of loess, and 50 g of alpha starch, add water to the mixture, heat it slowly while stirring, and boil at 100° C. for 9 to 11 minutes, compared to 400 g of wheat flour Tourmaline powder 50g, carboxymethyl cellulose 20g, sodium silicate 20ml, zeolite 30g, fish extract 50ml, methyl paraoxybenzoate 10ml, octagonal hyanghyang extract 20ml, citric acid 20ml Way. The method of claim 1,
Processed wood manufacturing method, characterized in that it further comprises the step of removing impurities contained in the pulverized material. According to claim 3, In the step of removing impurities
Processed wood manufacturing method, characterized in that by using a magnet to separate the metal material contained in the pulverized material. Processed wood manufactured by the manufacturing method of any one of claims 1 to 4.

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