KR101821758B1 - Method for manufacturing functional wood - Google Patents

Abstract

The present invention relates to a method for producing functional hardwood. More specifically, the present invention relates to a method for producing functional hardwood which is eco-friendly, natural, and suitable for heating and cooling owing to heat retention properties and heat barrier functions, without distortion and exfoliation on coated surfaces. In addition, the method for producing the functional hardwood also ensures excellent constructional stability without emission of substances harmful to human body, while securing functions of releasing beneficial substances.

Description

TECHNICAL FIELD The present invention relates to a method for manufacturing functional wood,

More particularly, the present invention relates to a method for manufacturing a functional timber, which is environmentally friendly, heat-retaining and heat-shrinkable while maximizing natural beauty, and is advantageous in cooling and heating, The present invention relates to a method for producing a functional timber that is excellent in stability, does not release human harmful components, and has an improved beneficial substance release property.

In general, widely known plate materials are plywood wood, PB (Particle Board), MDF, LVL (veneer laminate), OSB (oriented board made of coarse rice) Plaster plywood and the like.

However, all of them are not made of natural wood itself but artificially produced by using a by-product left after processing them, a material such as pulp material, sawdust, and the like.

Therefore, these plate materials can not feel the delicate feel of natural wood.

In recent years, there has been a tendency to upgrade the quality of living standards and the increase of furniture imports, and there is a tendency to use interior wood as a plate in keeping with this trend.

In addition, various attempts have been made to improve the interior characteristics in addition to the aesthetics inherent in the log itself by making the logs functionalized.

However, since the raw wood is not processed separately and the raw material is simply used as it is used, it may be easily contaminated or distorted during long-term use, or the adhesion to the construction surface may be inferior, or a harmful environment such as mold may be formed between the construction surfaces do.

In order to prevent this, the surface is coated with a coating agent. In this case, the pattern characteristic of the natural wood is halved, and the aesthetic feeling is decreased. When the coating is extended for a long time, the coating surface is lifted due to expansion and contraction of the wood. It also causes problems that are not safe.

Korean Patent No. 10-0619805 (Aug. 28, 2006) 'Functional veneer and its manufacturing method' Korean Patent No. 10-1733580 (Apr. 28, 2017) 'Method of Manufacturing Functional Furniture'

The present invention has been made in view of the above-described problems in the prior art, and it is an object of the present invention to provide an air conditioner which is advantageous in cooling and heating, The present invention is directed to a method for manufacturing a functional wood that has no peeling phenomenon, is excellent in the stability of construction, has no release of harmful components in the human body, and has improved beneficial material release characteristics.

According to the present invention, there is provided a cutting method for cutting a log into a predetermined length and thickness; A steam processing step of expanding, shrinking, and relaxing the cut timber by steam treatment to improve the processability and to remove and remove harmful substances; Drying at room temperature for 5 to 10 days after steam processing and leaving it in a cool shade for natural drying; Brushing the surface of the dried wood to polish the surface of the dried wood; When the brushing is completed, lowering the plate to which a plurality of needles are attached to press the surface of the brushed wood to form a needle hole to a depth of 5-6 mm; 35% by weight of microspheres having a micro-sized core-shell structure, 2.5% by weight of calcium hydroxide powder, 3.5% by weight of glycidyl neodecanoate, 2.5% by weight of cyanoacrylate, Soluble SiO ₃ 3.5% by weight and the rest of the PET resin, and calendering; Forming a surface protective layer on which a surface protective liquid composed of 15% by weight of PET resin, 5% by weight of oxybis, 10% by weight of spherical silica, and the remaining polycarbonate resin is roll coated when the emissive material layer is formed, In the material layer forming step, the microspheres of the core-shell structure are obtained by flowing a mixed fine powder mixed with nano-sized tourmaline and talc in a weight ratio of 1: 1 into a core nozzle forming a core of the double nozzle, Wherein the shell nozzle forming the shell is a micrometer sized microsphere formed by flowing a PET resin to free fall and dropping into a micro droplet state immediately after cooling with cooling water.

At this time, the steam processing step may include an expansion process for maximizing the pores of the raw wood by applying high temperature steam at 100-120 [deg.] C; Shrinkage process in which the steam of 5-10 ° C is sprayed onto the surface of the cut timber to rapidly cool it; And a relaxation process of allowing the wood to mature by being left in a relaxation zone maintained at 30-40 ° C.

In addition, after the step of forming the surface protective layer, a plate on which a plurality of fine needles are fixed is pressed on a completely dried surface protective layer so that the needle penetrates into the release material layer, and the core- A hole in the shell of the microspheres of the structure, and at the same time, a discharge conduit is formed also in the surface protective layer.

According to the present invention, not only is it advantageous in cooling and heating because it has the natural beauty as much as possible while being eco-friendly, heat retaining property and heat insulating property, it is free from warping, peeling phenomenon on the coated surface, excellent in the construction stability, And on the contrary, an effect of improving the releasing property of the beneficial substance can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exemplary cross-sectional view showing the structure of a log produced by the method of manufacturing a functional log according to the present invention. FIG.
2 is an exemplary cross-sectional view of another embodiment of FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Before describing the present invention, the following specific structural or functional descriptions are merely illustrative for the purpose of describing an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention may be embodied in various forms, And should not be construed as limited to the embodiments described herein.

In addition, since the embodiments according to the concept of the present invention can make various changes and have various forms, specific embodiments are illustrated in the drawings and described in detail herein. However, it should be understood that the embodiments according to the concept of the present invention are not intended to limit the present invention to specific modes of operation, but include all modifications, equivalents and alternatives falling within the spirit and scope of the present invention.

The method for manufacturing a functional wood according to the present invention includes a cutting step.

The cutting step is a step of cutting the log into a predetermined length and thickness.

At this time, the timber that has been cut through the cutting step is not cut into the final finished product size, but has a semi-finished product size. After being converted into a functional timber by the manufacturing method according to the present invention, Cutting process.

The steam processing step is then performed.

The steam processing step is a step of steam-treating the cut timber to improve the processability and at the same time to completely discharge and remove the toxic substances.

Here, the steam processing step according to the present invention is a general heating method, that is, an expansion process for high temperature treatment, a shrinking process for low temperature treatment, and a relaxation process for maturing in contrast to a general method for sequentially processing heat from low temperature to high temperature while gradually heating .

This concept is quite different from the usual steam treatment.

That is, in the expansion process, high temperature steam of 100-120 [deg.] C is applied to maximize the pores of the cut timber, thereby allowing the inherent harmful substances to quickly escape and be discharged, so that the timber is impregnated with steam, It is a process to have animation.

This expansion process is performed for about 1-2 hours, particularly preferably for 1 hour and 40 minutes while slowly moving the expansion zone at a line speed of 30 mm / min.

In addition, the shrinkage process can be accomplished by rapidly cooling the activated pores to obtain a kind of squeeze effect, a temperature difference of 90 ° C or higher, preferably 5-10 ° C, more precisely, It is sprayed on the surface of the logs and rapidly cooled.

However, the shrinkage process should be shortened to about 30 minutes in the shrinkage zone so as to prevent damage to the cells of the wood because it is rapidly cooled. For this, the line speed is preferably maintained at 60 mm / min.

Therefore, it is natural that the length of the expansion zone should be relatively longer than the contraction zone.

The relaxation process is a process in which the relaxation zone is treated at a line speed of 30 mm / min for 1-2 hours, particularly preferably for 1 hour and 40 minutes in a relaxation zone maintained at 30-40 ° C. .

This relaxation process is to maintain the stabilization by returning the pore of the expanded-timber that was expanded-contracted to its original state.

Then, a room temperature drying step is performed.

The drying at the room temperature is for 5 to 10 days in a cool shade to naturally dry, so as to prevent warpage and to maintain proper hardness while improving quality.

Then, when the drying at room temperature is completed, a brushing step is performed.

The brushing step is performed only on the surface of the dried wood, and the surface is brushed and polished so as to expose the pattern, the ring, and the like clearly so as to enhance the natural beauty.

In this case, since the torch is preceded and the surface temperature is raised through the torch, it is possible to significantly increase the sharpness of the work due to the temperature difference between the corrugated floor and the floor due to heat. .

When such brushing is completed, the needling step is performed immediately.

The needling step is a step of lowering a plate having a plurality of needles to press the surface of the brushed wood to form a needle hole to a depth of 5-6 mm.

The reason for forming such a needle hole is to form a stable wedge fixing structure of the coating layer when the coating layer is formed by surface treatment of the wood, so that the coating layer is not easily peeled, thereby increasing the adhesion stability and increasing the holding force of the discharged material to be.

Thereafter, a step of forming a layer of emissive material is carried out.

The emissive material layer forming step is performed in such a manner that the emissive material liquid is calendered while being applied to the surface of the log.

At this time, the emissive material liquid must have abrasion resistance and durability while maintaining transparency, and should have a releasing effect of a human body benefit component.

To this end, the emissive material solution comprises 35% by weight of microspheres having a micro-sized core-shell structure, 2.5% by weight of calcium hydroxide powder, 3.5% by weight of glycidyl neodecanoate, 2.5% by weight of cyanoacrylate, And water-soluble SiO ₃ 3.5% by weight, and the rest of the PET resin.

Here, the microspheres of the core-shell structure are prepared by flowing a mixed fine powder mixed with tourmaline and talc in a weight ratio of 1: 1 into a nano-sized core nozzle into a core nozzle of a double nozzle, The formed shell nozzle is made to flow through the PET resin, falling freely into a micro-droplet state, which is cooled immediately in the cooling water to form micro-sized microspheres.

At this time, the tourmaline fine powder is a mineral belonging to the hexagonal system having crystal structure such as quartz, and is a substance which permanently generates electromagnetic waves having a wavelength band of about 4 to 14 microns. Electromagnetic waves in the wavelength band of 4 to 14 microns It is a substance known to be useful for human body because it has the effect of activating cells, synthesizing proteins, or purifying contaminated water.

Talc was found to be a useful mineral containing silicon oxide: 63.5%, magnesium: 31.7%, calcium: 0.4%, and other substances. As a result, the talc itself was found to be a medicinal mineral having a far infrared emissivity of 93% It is known as a substance useful for human body.

Therefore, it is possible to obtain a semi-permanent effect while increasing the usefulness of the human body by releasing the useful substance to the shell and releasing it in a minute amount.

However, it is even better if more holes are made in the shell, because opening the trapped state will have a better release effect.

In addition, glycidyl neodecanoate is added in order to impart lubricity of the coating liquid and inhibit color development, thereby revealing the natural pattern of the natural wood, and cyanoacrylate suppresses high thermal expansion, , And water-soluble SiO ₃ is added to eliminate harmful substances by eliminating toxicity. Especially, it is useful for removing harmful substances such as 6 heavy metals.

In addition, the PET resin is used as a base resin of the emissive material layer to maximize intermixing with a two-pack type primer described later while maintaining transparency.

In addition, since the PET resin is not strong enough to adhere to the wood surface, the emissive material layer should be coated with a two-component primer, in particular a transparent two-component epoxy resin, as a primer, and in particular, a two-component primer It is preferable that the surface of the wood is surface treated with 1-hydroxy-3-methylbenzene so that the wedge force can be strengthened before the primer treatment is performed while the surface roughness is increased.

When the emissive material layer is formed, the surface protecting layer forming step is performed to complete the production of the functional wood according to the present invention.

At this time, the surface protection layer is formed by roll coating the surface protection liquid.

Here, the surface protective liquid is made of 15% by weight of PET resin, 5% by weight of oxybis, 10% by weight of spherical silica, and the rest of the polycarbonate resin in order to maintain strong durability, scratch resistance and transparency.

In this case, the PET resin is added for bonding with the emissive material layer, and the oxybis (OXYBIS) is added to enhance the abrasion resistance by forming a cured film through the crosslinking function, and isopropyl ether (Iso- PropylEther). The spherical silica floats on the surface of the composition due to the difference in specific gravity and exists only on the surface. Therefore, it maintains smoothness on the surface and enhances the scratch resistance on the surface.

The polycarbonate resin is added to satisfy both transparency and durability.

With this structure, the functional wood produced according to the present invention has a shape as shown in FIG.

That is, a plurality of needles 110 are formed on the surface of the base material 100, and a surface layer 300 is formed on the surface of the base material 200, As shown in Fig.

Accordingly, the natural pattern of the log 100 itself is developed as it is, while continuously releasing the useful substance (far-infrared ray) of the human body for a long time, have.

In addition, in the present invention, the emissive material layer rupture step may be further performed after the surface protective layer forming step.

The step of rupturing the emissive material layer may include pressing a plate having a plurality of fine needles on a completely dried surface protection layer to allow the needle to penetrate into the emissive material layer 200, It is possible to increase the releasing performance of the useful substance by forming a hole in the shell of the microspheres of the structure and simultaneously forming a discharge conduit in the surface protection layer 300.

In addition, a heat insulating layer 400 may be further formed on the surface of the emissive material layer 200 before forming the surface protecting layer 300, as shown in FIG.

The heat insulating layer 400 comprises 60 wt% of transparent polystyrene resin, 5 wt% of hydroxypropyl methylcellulose, 25 wt% of liquid storage material, And the remaining PET resin.

At this time, the polystyrene resin is added in order to maintain the impact resistance while enhancing the transparency, and the hydroxypropyl methylcellulose is added to enhance the stretch shrinkage and flexibility; The liquid phase heat storage material was prepared by dissolving 34 wt% of urea in 60 wt% of water and adding 2 wt% of zinc sulfate (Zn (NO ₃ ) ₂揃 6H ₂ O) and sodium acetate (CH ₃ COONa 揃 3H ₂ O) is used.

Herein, urea has a latent heat characteristic as a phase changeable material, and zinc and sodium acetate in the hydrothermal qualities are specified by the present invention in order to enhance heat retention due to the function of strengthening the thermoregulatory property by forming a eutectic point.

In order to enhance the non-slip property, a mixed resin liquid composed of 3% by weight of diaryl phthalate, 2.5% by weight of polyisocyanate, 10% by weight of liquefied anhydrous ammonia and the remaining PVC sol was formed into a sheet shape on the lower surface of the log 100 A non-slip sheet 500 may be further laminated.

In this case, the diaryl phthalate is added to improve adhesion and toughness to increase heat resistance including stability of adhesion and dimensional stability, and the polyisocyanate is added for accelerating hardening, and the liquefied anhydrous ammonia is strengthened in water resistance and adhesion .

In addition, an immersion step may be further performed after the steam processing step and before the normal temperature drying step, wherein the immersion step comprises: 15% by weight of salt, 10% by weight of the detergent extract, 5% by weight of citric acid, And immersing the timber in the immersion liquid composed of the remaining water for 3 days.

This step is to contain natural antimicrobial substances such as salt, guacamole and citric acid in the wood, and also to absorb the fragrance, which is a fragrance ingredient, so as to enhance the anti-moldiness and release a good fragrance during use.

Hereinafter, examples will be described.

[Example 1]

The process according to the present invention was processed to form a layer of emissive material and a surface protective layer on the surface of the log, followed by rupture of the emissive material layer, thereby forming Sample 1.

[Example 2]

Sample 2 was prepared in the same manner as in Example 1, and an immersion step was further performed.

[Example 3]

A sample 3 was prepared in the same manner as in Example 2, and a heat insulating layer was further formed.

[Example 4]

A sample 4 was prepared in the same manner as in Example 3, and a non-slip sheet was further laminated on the lower surface of the log.

In order to confirm the characteristics of the present invention, the pencil hardness of the samples 1, 2, 3, and 4 was measured using an 'electromagnet pencil hardness tester'.

The aimed hardness value of the present invention is 3 or more in terms of Mohs hardness value, and pencil hardness 8H corresponds to Mohs hardness value of about 4.5, which means that all samples are satisfied.

In addition, in order to confirm the antifungal property, the fungus was sprayed on the lower surfaces of Samples 1, 2, 3 and 4, respectively, and left for 30 days to confirm the activity of the fungus.

As a result, in case of samples 1 and 4, the fungi did not die but the activity of fungi gently decreased. In samples 2 and 3, fungi died.

As a result, it was confirmed that Examples 2 and 3 which had undergone the immersion step had antifungal properties.

In addition, the samples 1, 2, 3, and 4 were allowed to stand for 5 days in a state sprayed with salt water, and discoloration was confirmed. As a result, surface discoloration did not occur in all the samples.

Furthermore, to confirm the water resistance, four samples were immersed in water at room temperature for 5 days, respectively, to confirm whether or not the coating was separated. When separated, the water resistance was tested by measuring the time until the initial separation.

However, as a result of the test, coating separation did not occur in all the samples. As a result, it was confirmed that all samples were excellent in water resistance.

In addition, peel strength of each sample was measured by ASTM D3330 in order to confirm whether or not the coating layer was peeled off, that is, adhesion stability.

That is, the peeling strength was measured by pressing the peeling strength once at a speed of 30 cm / min with an automatic pressing roller device, and then subjected to a 180 ° peeling test after 30 minutes. Peeling strength was measured at a rate of 30 cm / Respectively.

As a result of the evaluation, the average adhesion of the coating layer of the samples 1, 2, 3 and 4, that is, the coating film was 3.50 kgf / 25 mm, much higher than the standard 1.25 kgf / 25 mm and the adhesion strength was very high.

In addition, far infrared radiation was confirmed on the surface of samples 1, 2, 3, and 4, and the average radiant energy (W / m ² 탆) was 3.44 × 10 ² .

In addition, six major metals were detected to be released, but not detected.

In addition, samples 1, 2, 3, and 4 were heated at the same distance in a constant temperature zone maintained at 20 ° C and heated with a lamp, and the surface temperature was measured with an infrared thermometer , Samples 3 and 4 were confirmed to have heat-shielding properties due to insufficient temperature change. However, in case of samples 1 and 2, the temperature change was relatively larger than that of samples 3 and 4.

In addition, the non-slip property was confirmed on the homogeneous concrete surface and when the concrete was pushed with a constant force, the sample was satisfactorily satisfactory.

100: Wood
200: Emissive material layer
300: surface protective layer
400: thermal insulation layer

Claims (3)

A cutting step of cutting the log into a predetermined length and thickness;
A steam processing step of expanding, shrinking, and relaxing the cut timber by steam treatment to improve the processability and to remove and remove harmful substances;
Drying at room temperature for 5 to 10 days after steam processing and leaving it in a cool shade for natural drying;
Brushing the surface of the dried wood to polish the surface of the dried wood;
When the brushing is completed, lowering the plate to which a plurality of needles are attached to press the surface of the brushed wood to form a needle hole to a depth of 5-6 mm;
35% by weight of microspheres having a micro-sized core-shell structure, 2.5% by weight of calcium hydroxide powder, 3.5% by weight of glycidyl neodecanoate, 2.5% by weight of cyanoacrylate, Soluble SiO ₃ 3.5% by weight and the rest of the PET resin, and calendering;
Forming a surface protective layer by roll coating a surface protective liquid composed of 15 wt% of PET resin, 5 wt% of oxybis, 10 wt% of spherical silica, and the remaining polycarbonate resin,
In the emissive material layer forming step, the microspheres of the core-shell structure are prepared by flowing a mixed fine powder mixed with nano-sized tourmaline and talc in a weight ratio of 1: 1 to core nozzles forming a core of the double nozzle, Wherein the shell nozzle forming the shell of the nozzle is a micrometer-sized microsphere formed by flowing a PET resin, flowing freely, and dropping into a micrometer droplet state immediately after cooling with cooling water.
The method according to claim 1,
The steam processing step may include an expansion process for applying the high temperature steam of 100-120 [deg.] C to maximize the pores of the cut wood; Shrinkage process in which the steam of 5-10 ° C is sprayed onto the surface of the cut timber to rapidly cool it; And a relaxation process of allowing the wood to be aged by being left in a relaxation zone maintained at 30 to 40 캜.
The method according to claim 1,
After the step of forming the surface protective layer, a plate on which a plurality of fine needles are fixed is pressed on a completely dried surface protective layer so that the needle penetrates into the release material layer, and the core- And a release material layer rupturing step of forming a hole in the shell of the microsphere and simultaneously forming a discharge conduit in the surface protection layer.

Images