JPH1134019A - Cork plate and its manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel cork plate which can be used for various purposes such as building interior material, inner underlay of shoes, sheet for pillow and the like, which will be related to promotion of health of users, and a method for manufacturing it. SOLUTION: Crushed cork materials are molded into a plate-like form by a resin binder, and powder of ore which generates negative ion due to pressure and/or temperature change is added to the cork plate. The cork plate containing the powder has not only excellent heat insulating property, elasticity, insect- proof property, sound absorbing property, ventilating property, but also has an action to radiate negative ion, so that health of dwellers and users can be promoted.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cork board and a method for producing the same, and more particularly, to various kinds of cork board, a shoe insole, a pillow sheet, a sheet for attaching an affected part, etc. useful as a building interior material. The present invention relates to a cork plate which is used in various applications and produces an unprecedented effect.

[0002]

2. Description of the Related Art A cork board formed by hardening cork particles with a resin and molding the resin has characteristics such as having a unique texture, excellent heat insulation, elasticity, sound absorption, and insect repellency. It is used in building interior materials and furniture, especially in the field of interior.

[0003] For example, the applicant of the present application has disclosed in
As described in Japanese Patent No. 17831, a coating containing an opaque pigment having various colors and light resistance is applied to the surface of a cork substrate to form an anti-fading coating film. By generating a cork pattern due to the difference in the absorbency of the substrate with respect to the paint, a cork board was proposed in which the pattern and color tone unique to cork were maintained and the discoloration due to ultraviolet rays was suppressed.

[0004] Since this cork board has an appearance utilizing characteristics of cork and is excellent in durability,
For example, it is expected to be used as a flooring material.

[0005]

In order to widely use cork boards as building interior materials, it is necessary not only to make use of the features of the cork itself but also to increase the commercial value by adding some added value. Is done. Of course, at this time, it is meaningless if the texture unique to cork disappears.

Therefore, the present invention aims to increase the commercial value of the above-described cork board by adding an added value that has never been considered before, and to spread the cork board as a building interior material such as flooring. It is another object of the present invention to provide a cork board that can be used not only for building interior materials but also for various purposes.

Specifically, it has a unique texture of cork,
In addition to being excellent in heat insulation, elasticity, sound absorption, and insect repellency, architectural interior materials such as flooring, shoe insoles, sheets for pillows,
It is an object of the present invention to provide a novel cork board which is used for a sheet or the like for attaching an affected part to the health of residents and the like, and a method for producing the same.

[0008]

In order to achieve the above-mentioned object, a cork board according to the present invention and a cork board manufactured by the method for manufacturing a cork board according to the present invention are manufactured by a method in which a crushed cork material is mixed with a resin binder. It is molded into a plate shape,
Contains mineral powder that generates negative ions by pressurization and / or temperature change.

[0009] For example, a cork board containing tolmarin powder has a unique texture of cork, heat insulation, elasticity,
In addition to having excellent insect repellency, sound absorption, and air permeability, it has the function of radiating negative ions, and is used as a building interior material such as flooring and wall material, shoe insole, pillow sheet, sheet for attaching the affected part, etc. It can be used to improve the health of residents and others.

[0010] In particular, if the paint containing torma lymph powder is made to penetrate into the cork substrate surface under pressure by a roll coater, not only the above-mentioned health-promoting action, but also the layer containing torma lymph powder functions as a surface protective layer. , Light fastness is improved.

In another embodiment of the present invention, the cork board according to the present invention is characterized in that a crushed cork material is formed into a plate shape with a resin binder and contains an inorganic antibacterial agent. Pressurization and / or
Alternatively, it is characterized by containing a powder of a mineral which generates negative ions by a change in temperature.

The inorganic antibacterial agent contained in the cork board kills bacteria such as Escherichia coli and Staphylococcus aureus and mold, and maintains a clean environment in the living space when the cork board is used as a cork decorative board. That is, in this cork board,
It does not produce mold or bacteria and does not produce mites or termites, thus improving the condition of residents suffering from allergic constitution, atopic dermatitis, childhood asthma, rhinitis, urticaria and the like.

The same effect as described above can be obtained by using this cork board as an insole for shoes, a sheet for pillows, a sheet for attaching an affected part, or the like.

In the cork board and the method of manufacturing the same according to the present invention, if the surface of the cork substrate is subjected to a fluororesin processing or a silicon resin processing by using a fluororesin or a silicon resin as a resin for the paint, the above-mentioned health-promoting action can be obtained. In addition to functioning as a protective layer for stain resistance, light resistance, and durability,
The function of the surface is greatly improved. In other words, it is possible to dramatically improve the stain resistance, light resistance, and durability by processing the fluororesin or silicon resin, and in combination with the antibacterial properties of the inorganic antibacterial agent, to further prevent the invasion of mold and bacteria. Can be.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a cork board according to the present invention and a method for manufacturing the same will be described.

The cork plate to which the present invention is applied is pressurized and / or
Or contains a mineral powder that generates negative ions due to a temperature change. An ore having such properties is, for example, tourmaline. The present invention provides a cork board that combines the properties of an ore such as tourmaline and the like and cork to maximize the effects obtained from the properties of both.

Therefore, the characteristics of tourmaline will be described first. Tourmaline is a boron-containing cyclosilicate mineral, also called tourmaline, whose chemical composition is represented by XY ₉ B ₃ Si ₆ O ₂₇ (O, OH, F) ₄ (X = Ca, Na, K, Mn Y = Mg, Fe, Al,
(Cr, Mn, Ti, Li).

In this tourmaline, since the center of the positive charge and the center of the negative charge in the unit cell of the crystal are largely displaced, electrodes are formed at both ends of the crystal, and the potential is permanently maintained.

Furthermore, tourmaline generates moderate far-infrared rays and negative ions with a wavelength of about 4 to 14 μm on the human body due to a slight temperature difference, pressure or impact.

The function of the negative ions is to purify air and water, to activate oxidized senescence in the human body, to change an acidic constitution into a weakly alkaline constitution, to purify blood by activating water, Activating cells, purifying plants and the like are known.

In order to effectively generate the negative ions from tourmaline, it is desirable that an air flow exists around the tourmaline. In addition, negative ions are efficiently generated due to changes in temperature, light, humidity, moisture, pressure, light impact, friction, and the like.

First, air is always present around tourmaline, and in order to improve the air flow, the present invention utilizes the air permeability, which is a characteristic of the cork substrate, and the air bubbles of the air cells which are largely mixed in the cork cells. The cork board is manufactured by the manufacturing method described below. That is, in the present invention, as described later, for example, a paint containing tolma lymph powder is infiltrated into the cork substrate by pressure using a roll coater, for example.

The cork board to which the present invention is applied is particularly suitable for use as a flooring material for a house or the like. In this case, light necessary for efficiently generating negative ions is generated by sunlight entering the room or sunlight. Obtained from an illuminator or the like provided in the camera. Furthermore, there is a flow of outside air and humidity in a room with a high occupancy frequency, which also increases the generation efficiency of negative ions as described above. In addition, pressurization and friction on the floor surface associated with all living activities such as walking of the resident also efficiently generate negative ions from tourmaline.

The cork board to which the present invention is applied generates, for example, about 100 to 500 negative ions per gram cubic centimeter by an appropriate pressurization in an environment at a room temperature of 27 ° C. and a humidity of 50%. Further, it is also possible to further increase the amount of negative ions generated by changing the conditions, for example, by increasing the content of tourmaline powder in the cork plate.

Further, the cork board to which the present invention is applied can be cut according to the shape of the shoe sole, inserted into the shoe, and used as an insole for the shoe. In this case, the breathability of the cork prevents the inside of the shoe from getting stuffy, and provides an optimal environment for treating and preventing athlete's foot and the like. Also, due to moderate pressurization during walking and moderate moisture due to perspiration of the user, tourmaline efficiently generates negative ions. The negative ions clean the acidic air and moisture inside the shoes and make them alkaline, and the skin breathes ions into the feet, weak currents of the ions stimulate the soles of the feet and metabolize the feet. It promotes blood circulation and reduces user fatigue.

Further, the cork board to which the present invention is applied may be formed in a sheet shape and used as a pillow sheet inserted between the pillow body and the pillow cover. Cork sheet
It has the breathability, flexibility, and cushioning properties of a cork board made of natural cork, and provides a comfortable feeling when used as a pillow sheet.

Negative ions generated from the cork sheet enter the body by skin respiration and the like, and a weak current generated by the ions stimulates body fluids and cells to increase metabolism,
It changes the body fluids such as blood from acidic to weakly alkaline, suppresses the generation of active oxygen which causes adult diseases, improves the blood circulation of the user, recovers the feeling of fatigue, and naturally eliminates stress and the like.

Further, the cork plate to which the present invention is applied may be formed thin so as to have flexibility, an adhesive layer may be provided on one surface, and the cork sheet may be directly adhered to an affected part such as a waist or a shoulder as a cork sheet. . In this case, too, the user's sweat generates moderate anions from tourmaline, and the anions enter the body through skin respiration, stimulate the user's metabolism by stimulating the weak current generated by the ions, improve blood circulation, and improve fatigue. It naturally relieves stiff shoulders and lower back pain. This cork sheet, unlike ordinary patches, lasts for a long period of time and does not lose its efficacy even when washed.

Here, the manufacturing process of the cork board to which the present invention is applied will be described.

First, the bark of the cork oak is peeled off, and the cork raw material obtained by drying is crushed by a granulator, and then a resin binder such as a urethane resin adhesive is added to the crushed cork and mixed and stirred. A cork substrate is formed by pressing and solidifying.

On the other hand, a paint is prepared by mixing the resin component and tolmarin powder. This paint is pressed and penetrated into the cork substrate using a roll coater. As shown in FIG. 1, this roll coater includes a rubber roll 1 and a rubber roll 1.
And a second plating roll 4 disposed so as to form a gap 3 between the first plating roll 2 and the rubber roll 1.

The gap 3 has a thickness of, for example, 5 mm.
When performing pressure infiltration to the cork substrate, the thickness is set to about 4 mm. Thereby, pressure infiltration is performed at a suitable pressure. Further, by adjusting the interval of the gap 3, it is possible to change the strength of pressurization, that is, the penetration amount of the paint.

Here, the paint 6 is poured into a portion where the rubber roll 1 and the first plating roll 2 are in contact with each other, and the rubber roll 1 is
The first plating roll 2 is rotated in the Q direction, the second plating roll 4 is rotated in the R direction, and the cork substrate 5 is inserted into the gap 3.

As a result, the rubber roll 1 rotates with the paint adhered to the outer peripheral surface. The cork substrate 5 inserted into the gap 3 is sent in the S direction while being sandwiched between the rubber roll 1 and the second plating roll 4. At this time, the paint adhering to the outer peripheral surface of the rubber roll 1 is pressed into the surface of the cork substrate 5 in contact with the rubber roll 1.

The application of the paint by such pressure permeation is performed in the following manner.
By performing the process once or a plurality of times on one cork substrate, a cork plate having a pressurized osmotic layer of a mixed paint containing a resin component and tolma lymph powder on the surface is formed.

In the coating method of applying a paint to the cork substrate irrespective of the pressure infiltration technique, a thick coating film is formed on the surface of the cork substrate, and the air permeability of the cork is lost. The texture is also impaired.

On the other hand, according to the pressure infiltration method in which a paint in which tolma lump powder is well dispersed by the pressure infiltration method is penetrated into the cork substrate several times little by little, according to the pressure infiltration layer formed by this, Since the torma lymph powder spreads in a mesh pattern to every corner, and the torma lymph powder is well dispersed at intervals without adhering to each other, the air permeability of the cork substrate can be maintained without closing the air bubbles of the cork substrate. As a result, the torma rind powder comes into contact with air, and the above-described negative ion generation effect is enhanced. In addition, the surface of the cork substrate maintains a unique texture of cork, and by using a paint containing fluorine resin and silicone resin, it offers excellent durability and water resistance, providing a cork board that does not impair the texture of cork for a long time. it can.

Here, the paint which is made to penetrate the cork substrate under pressure may further contain an inorganic antibacterial agent. Inorganic antibacterial agents suppress the growth and growth of microorganisms, and are superior in heat resistance and stability to organic antibacterial agents. If a cork board is formed by infiltrating a paint containing the inorganic antibacterial agent into a cork substrate under pressure, the sanitary environment of a house using the cork board as a decorative board and a flooring can be improved. Also, even if a cork board containing an inorganic antibacterial agent is used as the above-mentioned shoe insole or pillow sheet, generation of mold and various germs is prevented, which is very sanitary.

As this inorganic antibacterial agent, for example, there is Zeomic (trade name) available from Sinanen Zeomic.

At this time, the paint to be penetrated into the cork substrate under pressure contains 1.5 to 30% by weight, preferably 5 to 10% by weight of tolma lin powder. When the weight ratio of torma lymph powder in the paint is 1.5% by weight or less, negative ions are not effectively generated, and when the weight ratio of torma lymph powder in the paint exceeds 30% by weight, the stain resistance and water resistance of the paint There is a possibility that the performance of the paint such as abrasion resistance, flexibility and adhesion may be reduced.

Further, the component ratio of the inorganic antibacterial agent in the paint is 0.5 to 10% by weight, preferably 1 to 3% by weight. When the component ratio of the inorganic antibacterial agent contained in the paint is 0.5% by weight or less, the antibacterial effect is weakened, and conversely, 10%
Incorporation of an inorganic antibacterial agent in an amount of not less than% by weight does not necessarily increase the antibacterial effect in proportion to the component ratio, and is not preferable because it deteriorates the performance of the paint.

Then, the paint is infiltrated into the cork substrate under pressure one or more times. The final pressure permeation value is preferably 11 to 110 g / m ² . In particular, 3.3 to 6 g / m ^{2 of} inorganic antibacterial agent and
It is effective to infiltrate under pressure to double the amount, that is, 33 to 60 g / m ² . In this case, the content of the torma lymph powder and the inorganic antibacterial agent in the paint and the application amount of the paint determine the torma lymph powder content and the inorganic antibacterial agent content of the cork substrate.

By the way, in general, a cork substrate is remarkably discolored by ultraviolet rays, and its prevention is a major problem. Therefore, a technique of applying an opaque paint to the surface of the cork substrate to prevent fading due to ultraviolet rays is useful. If the tolma limb powder and the inorganic antibacterial agent are mixed in the paint, the light resistance of the cork board can be improved and the cork can be improved. The effect of improving the health of the occupants of the dwelling using the board is achieved at the same time.

However, since the above-mentioned torma lymph powder and inorganic antibacterial agent do not exert much effect on the improvement of light resistance, it is preferable to mix an inorganic pigment for effectively preventing fading into the paint.

As the pigment to be used, those which hardly transmit ultraviolet rays and have excellent light resistance are preferred, and examples thereof include graphite, carbon, red iron, rutile titanium and the like. In addition, organic pigments such as benzine yellow, organic transparent bengara,
Lead white, zinc white anase type titanium and the like may be used, but these are slightly inferior in light resistance. In addition, by selecting a pigment having a color different from the conventional cork color such as white, pink, orange, and red, cork boards having various color tones can be formed.

On the other hand, as the resin component used in the paint, any of those known as paint resins can be used, and a urethane resin or an acrylic resin may be used from the viewpoint of flexibility and the like. Fluororesins and silicone resins which are excellent in stain resistance, water resistance, light resistance and durability are most suitable.

By using these fluororesins or silicone resins as coating resins, the surface of the cork board is processed by fluororesin or silicon resin.
Water repellency, stain resistance, water resistance, light resistance, and durability are imparted. The resin for the paint may be selected according to the use of the cork board.

The above fluororesin and silicone resin are
It may be used only for surface processing. For example, a urethane resin or an acrylic resin may be used as a resin for the coating material, and a thin fluororesin or silicon resin may be coated on the surface. In this case, it is more effective to mix tourmaline powder or an inorganic antibacterial agent into a fluororesin or silicon resin coated on the surface.

In order to apply the above-mentioned paint to the surface of the cork board, application techniques such as roll coating, spray coating and flow coating can be used. By applying pressure to the paint, the texture, breathability,
The texture is maintained and is very suitable.

The cork substrate is obtained by pulverizing cork raw material (cork oak bark) with a granulator and using an adhesive (resin binder).
And molded by pressing and heating. Therefore, very fine holes of the bark of the cork oak are present on the surface of the cork substrate. Further, since the cork substrate is a molded body of a large number of cork grains as described above, there are many vent holes.

When such a cork substrate is infiltrated with a paint containing tolma lymph powder or an inorganic antibacterial agent using a roll coater, the fine pores and concave patterns remain on the surface as they are, and there is air permeability. The texture of its surface, so that it is indistinguishable from raw corkboard,
The texture is maintained. Such a surface state can be obtained only when a roll coater is used, and it is difficult to obtain the above-mentioned effects because a coating film is formed on the surface by another coating method.

Of course, in order to obtain the above-mentioned surface condition, it is necessary to appropriately select the coating conditions when coating with a roll coater, and the amount of one coating is from 22 g / m ^{2 to} 44 g.
/ M ² , the viscosity of the paint at this time is 15 seconds
Preferably, it is 30 seconds.

In order to maintain the cork pattern on the cork substrate surface, the proportion of the pigment contained in the paint is important.
Too much pigment can result in a monotonous image of the entire surface. Therefore, the proportion of the whole pigment (the total amount of various pigments) contained in the coating material is 5 to 65% by weight, and particularly the proportion of the inorganic pigment having an anti-fading effect is 5 to 25% by weight.
And the rest as the resin component.

When the proportion of the pigment exceeds the above range, the background pattern of the cork substrate is hidden, and it becomes difficult to maintain the texture and texture of the cork. Conversely, if the proportion of the pigment is less than the above range, the effect of preventing fading is insufficient, and the light resistance is poor.

As described above, the application of the paint by the roll coater may be performed once or plural times. In the latter case, the color tone and the like of the obtained cork board can be slightly changed by selecting the number of times of application.

Instead of the pressure infiltration method using a roll coater, tolamine powder and an inorganic antibacterial agent may be mixed in advance in the resin binder in the process of manufacturing the cork substrate. That is, a cork substrate containing tolma lymph powder and an inorganic antibacterial agent may be formed by adding a resin binder mixed with the resin binder and the tolma lump powder to the cork raw material, mixing, stirring and hardening the mixture.

In this case, the appropriate content of tolmarin powder in the cork plate is 1.5 to 30% by weight, preferably 5 to 30% by weight.
And an appropriate content of the inorganic antibacterial agent is 0.1 to 10% by weight.
It is 5 to 10% by weight, preferably 1 to 3% by weight.

When the amount of tourmaline is 1.5% by weight or less,
An appropriate negative ion generation effect was not obtained, and 30% by weight
If it exceeds 300, the adhesive effect of the resin binder may be weakened. When the component ratio of the inorganic antibacterial agent is 0.5% by weight or less, the antibacterial effect is weakened.
If the content is 0% by weight or more, the production cost of the product increases.

As described above, according to the present invention, tolamine powder or an inorganic antibacterial agent is preliminarily mixed into a resin binder when manufacturing a cork plate, or is formed into a coating on the surface of a molded cork substrate. However, these methods may be applied to the cork substrate alone, or both may be used in combination. Alternatively, after a cork substrate is manufactured by previously mixing tolma lump powder or an inorganic antibacterial agent into a resin binder, a paint containing a pigment having an anti-fading effect may be applied to the surface of the cork substrate.

[0060]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments to which the present invention is applied will be described.

Example 1 This example is an example in which tolmarin powder was mixed in a resin binder in advance to produce a cork substrate.

First, the cork raw material obtained by stripping off the bark of the cork oak and drying is crushed by a granulator, and then a resin binder (urethane resin adhesive), an inorganic antibacterial agent (trade name: Zeomic) and tolamine powder And mix and stir,
Pressed and hardened. The amounts of the raw materials are as follows.

Cork raw material: 70.0% by weight Resin binder: 20.0% by weight Tolmarin powder: 10.0% by weight Next, this was cut into a plate shape, and the surface thereof was polished to obtain a cork plate. The obtained cork board was constituted as a molded product of a large number of crushed cork grains, and the appearance was not different from that of a natural cork board at all, even though it contained tolmarin powder.

A cork board was prepared in the same manner as described above by adding colored pigments having various colors in addition to torma lymph powder, and cork boards containing torma lymph powder and colored in various colors were obtained. Was.

Example 2 This example is an example in which a paint containing tolma lymph powder is made to penetrate the surface of a normal cork substrate under pressure.

First, the bark of the cork oak is peeled off, and the cork raw material obtained by drying is crushed by a granulator, and then a resin binder (urethane resin adhesive) is added, mixed and stirred, pressurized and solidified to obtain cork. A substrate was obtained.

On the other hand, the resin component and tolmarin powder were mixed at the following ratio to prepare a coating.

Urethane resin paint 64.0% by weight Tolmarin powder 8.0% by weight Additive (curing agent) 16.0% by weight Solvent 12.0% by weight Next, this paint was applied to the surface of the cork substrate using a roll coater. Was applied twice so as to have an application amount of 66 g / m ² . The viscosity of the paint at this time was 20 seconds in the viscosity cup.

The cork board thus obtained has the surface air holes and the bare skin remaining as it is, has a breathability, and has a unique texture of cork.
The texture was well maintained and could not be distinguished from a natural cork board without any surface treatment.

Embodiment 3 This embodiment is also an example in which a paint containing torma lymph powder is applied to the surface of a normal cork substrate, as in the above-mentioned embodiment 2, but various pigments are added in addition to torma limp powder. This is an example in which cork boards having various colors are manufactured.

The method of manufacturing the cork board was the same as in Example 2, except that the composition of the paint was changed as follows.

Natural color urethane resin paint 50.9% by weight Tolmarin powder 8% by weight Toning pigment 11.6% by weight Additive (curing agent) 16.5% by weight Solvent 13.0% by weight Brown urethane resin paint 50 9.9% by weight Tourmaline powder 8.0% by weight Toning pigment 11.6% by weight Additive (curing agent) 16.5% by weight Solvent 13.0% by weight White urethane resin paint 45.0% by weight Tourmaline powder 8.0 20.0% by weight Toning pigment 20.0% by weight Additive (curing agent) 14.0% by weight Solvent 11.0% by weight As a result, fine pores and concave portions on the surface remain as in Example 2 above. A cork board having good ventilation and good texture and texture unique to cork was obtained, and cork boards colored in various colors were obtained.

Example 4 The torma lymph powder-containing paint was permeated under pressure in the same manner as in Example 2 on the surface of the cork board containing torma lymph powder prepared in Example 1.

As a result, a cork board was obtained which maintained good texture and texture peculiar to cork, and which contained tolmarin powder both inside and on the surface of the cork board.

Example 5 This example is an example in which the anti-fading paint is applied to the surface of the cork plate of Example 1.

A coating material A having the following composition and a curing agent B were mixed at a ratio of 4: 1.
An opaque paint was prepared by adding until ２０20 seconds.

Paint A Acrylic urethane resin 28.0% by weight Cork color blend pigment 3.0% by weight Additive 0.3% by weight Aromatic hydrocarbon 32.0% by weight Acetate 33.0% by weight Ketone 3.7% by weight % Curing agent B Polyisocyanate 75.0% by weight Aromatic hydrocarbon 12.5% by weight Acetate 12.5% by weight Solvent C Aromatic hydrocarbon 55.0% by weight Acetate 35.0% by weight Methyl ethyl ketone 10.0% % In the paint A, the composition of the cork-colored pigment is as follows.
Type.

Cork-colored pigment (natural color) Yellow 30.0% by weight Carbon 4.0% by weight Bengala 6.0% by weight Rutile-type titanium 60.0% by weight Cork-colored pigment (brown) Graphite 45.0 32.0% by weight of carbon 32.0% by weight Bengala 22.0% by weight Cork-colored pigment (dark brown) Graphite 22.0% by weight Carbon 46.0% by weight Bengala 22.0% by weight Next, the prepared opaque paint is flown. The entire surface of the cork board (305 mm x 305 mm) prepared in Example 1 was uniformly applied twice by 6 g each using a coater and dried by a far-infrared dryer.

Further, a photoreactive urethane resin comprising 54% by weight of an acrylic urethane resin, 40% by weight of a reactive diluent, and 6% by weight of a suspending agent was 70 g / m 2 by a flow coater.
2 was applied and cured by ultraviolet irradiation to obtain a cork board.

The obtained cork board contained tolmarin powder and was excellent in light resistance while maintaining a cork pattern. Actually, when a discoloration test was performed by exposing to sunlight, almost no discoloration was observed.

Example 6 This example is an example in which an inorganic antibacterial agent and tolamine powder were mixed in a resin binder in advance to produce a cork substrate.

First, the cork raw material obtained by stripping off the bark of the cork oak and drying was crushed by a granulator, and then a resin binder (urethane resin adhesive), an inorganic antibacterial agent (trade name: Zeomic) and tolmarin powder were obtained. And mix and stir,
Pressed and hardened. The amounts of the raw materials are as follows.

Cork raw material 70.0% by weight Resin binder 18.0% by weight Inorganic antibacterial agent (trade name: Zeomic) 2.0% by weight Tolma linpouda 10.0% by weight Next, this was cut into a plate shape and its surface was cut. Was polished to obtain a cork board. The obtained cork board was constituted as a molded product of a large number of crushed cork granules, and the appearance was not different from that of a natural cork board at all, even though it contained an inorganic antibacterial agent and tolmarin powder.

Further, a cork board was prepared in the same manner as described above by adding a colored pigment having various colors in addition to the inorganic antibacterial agent and tolma linpowder. A colored cork board was obtained.

Example 7 This example is an example in which a paint containing an inorganic antibacterial agent and tolmarin powder is applied to the surface of a normal cork substrate by pressure penetration.

First, the bark of the cork oak is peeled off, and the cork raw material obtained by drying is crushed by a granulator, and then a resin binder (urethane resin adhesive) is added, mixed and stirred, and pressurized to harden the cork. A substrate was obtained.

On the other hand, a resin component and tolmarin powder were mixed at the following ratio to prepare a paint.

Urethane resin paint 60.0% by weight Inorganic antibacterial agent (trade name: Zeomic) 2.0% by weight Tolmarin powder 10.0% by weight Additive (curing agent) 15.0% by weight Solvent 13.0% by weight This coating material was applied twice on a surface of the cork substrate using a roll coater so as to have an application amount of 66 g / m ² . The viscosity of the paint at this time was 20 seconds in the viscosity cup.

The obtained cork board has air permeability on the surface as it is, and has a breathability, a unique texture of cork.
The texture was maintained well, and it was indistinguishable from a natural cork board without any surface treatment.

Further, this surface was coated with a fluororesin paint containing an inorganic antibacterial agent and tourmaline powder,
As a result of pressure penetration, the stain resistance, light resistance, and durability were further enhanced.

Embodiment 8 This embodiment is also an example in which a paint containing an inorganic antibacterial agent and tolmarin powder is infiltrated into the surface of a normal cork substrate in the same manner as in Embodiment 7 described above. This is an example in which a cork plate having various colors is manufactured by adding various pigments in addition to the agent and the tolamine powder.

The method of manufacturing the cork board was the same as that in Example 2, except that the composition of the paint was changed as follows.

12. Natural color urethane resin paint 52.0% by weight Inorganic antibacterial agent (trade name: Zeomic) 2.0% by weight Tolma linpouda 10.0% by weight Toning pigment 10.0% by weight Additive (curing agent) 0% by weight Solvent 13.0% by weight Brown urethane resin paint 52.0% by weight Inorganic antibacterial agent (trade name: Zeomic) 2.0% by weight Tolma linpouda 10.0% by weight Toning pigment 10.0% by weight Additive ( Curing agent) 13.0% by weight Solvent 13.0% by weight White urethane resin paint 39.0% by weight Inorganic antibacterial agent (trade name: Zeomic) 2.0% by weight Tolma linpouda 10.0% by weight Toning pigment 23.0 13.0% by weight Additive (curing agent) 13.0% by weight Solvent 13.0% by weight As a result, fine pores and concave portions on the surface remain as they were, A cork board with good texture and texture unique to Luk was obtained, and cork boards colored in various colors were obtained.

Example 9 A coating material containing an inorganic antibacterial agent and tolmarin powder was infiltrated into the surface of the cork substrate containing the inorganic antimicrobial agent and tolma lymph powder prepared in Example 6 in the same manner as in Example 7.

As a result, the texture and feeling unique to cork can be maintained well, and both the inside of the cork plate and the pressure-permeable layer on the surface contain an inorganic antibacterial agent and tolmarin powder, and are resistant to contamination and light. Thus, a cork plate having excellent durability was obtained.

Example 10 This example is an example in which the anti-fading paint was applied to the surface of the cork substrate of Example 6.

A coating material D having the following composition and a curing agent E were mixed at a ratio of 4: 1.
An opaque paint was prepared by adding until ２０20 seconds.

Paint D Acrylic urethane resin 28.0% by weight Cork color blend pigment 3.0% by weight Additive 0.3% by weight Aromatic hydrocarbon 32.0% by weight Acetate ester 33.0% by weight Ketone 3.7% by weight % Curing agent E Polyisocyanate 75.0% by weight Aromatic hydrocarbon 12.5% by weight Acetate 12.5% by weight Solvent F Aromatic hydrocarbon 55.0% by weight Acetate 35.0% by weight Methyl ethyl ketone 10.0% by weight % In the paint A, the composition of the cork-colored pigment is as follows.
Type.

Cork-colored pigment (natural color) Yellow 30.0% by weight Carbon 4.0% by weight Bengala 6.0% by weight Rutile-type titanium 60.0% by weight Cork-colored pigment (brown) Graphite 45.0 32.0% by weight of carbon 32.0% by weight Bengala 22.0% by weight Cork-colored pigment (dark brown) Yellow 22.0% by weight Carbon 46.0% by weight Bengala 22.0% by weight Next, the prepared opaque paint is flowed. Cork substrate (305 mm x 305 mm) prepared in Example 6 using a coater
6 g each was uniformly applied twice on the entire surface and dried by a far-infrared dryer.

Further, a photoreactive urethane resin comprising 54% by weight of an acrylic urethane resin, 40% by weight of a reactive diluent, and 6% by weight of a suspending agent was applied to a flow coater at 70 g / m 2.
2 was applied and cured by ultraviolet irradiation to obtain a cork board.

The obtained cork board contained an inorganic antibacterial agent and tolmarin powder, and was excellent in light resistance while maintaining a cork pattern. Actually, when a discoloration test was performed by exposing to sunlight, almost no discoloration was observed.

[0102]

The cork board according to the present invention and the cork board manufactured by the method for manufacturing the cork board are obtained by forming a crushed cork material into a plate shape with a resin binder, and by applying a pressure and / or a temperature change to a negative ion. Ore, for example, which generates powder.

[0103] The inclusion of tourmaline powder in a cork board with good air permeability creates a flow of air around the tourmaline, and the proper pressurization and moisture when the cork board is used can reduce negative ions from the tourmaline efficiently. Often occurs.

When a cork board containing tolmarin powder is used as a cork decorative board as a building interior material, negative ions are radiated on a daily basis due to moderate pressurization and temperature change due to occupants' walking and the like, and the The air and water are purified, and the effect of improving the health of residents and the like is obtained.

Further, by using a cork board containing tolmarin powder as an insole, a sheet for pillows, a sheet for attaching an affected part, etc., recovery of fatigue and promotion of health of the user can be achieved.

In particular, if the paint containing torma lymph powder is made to penetrate into the cork substrate surface under pressure by a roll coater, not only the above-mentioned health-promoting action, but also the layer containing torma lymph powder functions as a surface protective layer. And light resistance can be improved.

Further, in another embodiment of the present invention, the cork board according to the present invention is characterized in that a crushed cork material is formed into a plate shape with a resin binder and contains an inorganic antibacterial agent. And further comprising tolma lymph powder.

The inorganic antibacterial agent contained in the cork board acts on cells such as general bacteria and mold to kill them. The cork board containing the inorganic antibacterial agent kills bacteria such as Escherichia coli and Staphylococcus aureus and mold and maintains a clean environment. In other words, this cork board does not generate mold or bacteria, and does not cause ticks or termites, so it improves the condition of users suffering from allergic constitution, atopic dermatitis, pediatric asthma, rhinitis, urticaria, etc. it can.

In the cork board and the method for manufacturing a cork board according to the present invention, the health can be improved by using a fluororesin or a silicon resin as a resin for the coating and performing a fluororesin processing or a silicon resin processing on the cork substrate surface. It functions not only as an enhancement but also as a protective layer for stain resistance, light resistance, and durability, and the surface function is greatly improved. That is, the stain resistance by processing fluororesin or silicon resin,
Light resistance and durability can be dramatically improved, and in combination with the antibacterial properties of the inorganic antibacterial agent, the invasion of mold and bacteria can be further prevented.

As described above, according to the present invention, it is possible to provide a cork board having a high commercial value and having an unprecedented additional effect when used as a building interior material.

[Brief description of the drawings]

FIG. 1 is a diagram showing a roll coater.

[Explanation of symbols]

1 rubber roll, 2nd plating roll, 3 gaps,
4 second plating roll, 5 cork substrate, 6 paint

Claims (19)

[Claims] 1. A cork board wherein a crushed cork material is formed into a plate shape by a resin binder containing a powder of a mineral which generates negative ions by pressure and / or temperature change. 2. The cork board according to claim 1, wherein the resin binder further contains an inorganic antibacterial agent. 3. The powder has a component ratio of 1.5 to 30% by weight, the inorganic antibacterial agent has a component ratio of 0.5 to 10% by weight, and the balance is a resin binder and a cork material. The cork board according to claim 2, wherein: 4. The cork board according to claim 1, wherein the cork board is cut into a shape to be inserted into a shoe, and is used as an insole of the shoe. 5. The cork plate is formed in a sheet shape,
The cork board according to claim 1, which is used as a pillow sheet inserted between the pillow body and the pillow cover. 6. The cork board according to claim 1, wherein the cork board is formed to have flexibility, and an adhesive layer is provided on one surface. 7. The cork board according to claim 1, wherein the mineral which generates negative ions by the change in pressure and / or temperature is tourmaline. 8. A cork substrate in which a crushed cork material is formed into a plate shape with a resin binder, wherein the cork substrate generates negative ions on its surface by an opaque paint, a resin component, and a change in pressure and / or temperature. A cork board having a press-penetrated layer formed by press-penetration of a mixed paint containing mineral powder. 9. The cork board according to claim 8, wherein the mixed paint further contains an inorganic antibacterial agent. 10. In the mixed paint, the powder component ratio of the mineral that generates negative ions is 1.5 to 30% by weight, the component ratio of the inorganic antibacterial agent is 0.5 to 10% by weight, and the balance is The cork board according to claim 9, which is an opaque paint and a resin component. 11. The cork board according to claim 8, wherein the cork board is cut into a shape to be inserted into a shoe, and is used as an insole of the shoe. 12. The cork board according to claim 8, wherein the cork board is formed in a sheet shape and is used as a pillow sheet inserted between the pillow body and the pillow cover. 13. The cork board according to claim 8, wherein the cork board is formed to have flexibility, and an adhesive layer is provided on one surface. 14. The cork board according to claim 8, wherein the mineral that generates negative ions by the change in pressure and / or temperature is tourmaline. 15. A step of mixing and agitating the crushed cork material and the resin binder with a powder of a mineral that generates negative ions by pressurization and / or temperature change; and the step of mixing and agitating the cork material and the resin binder. Pressurizing and solidifying mineral powder. 16. A step of mixing and stirring a crushed cork material, a resin binder, a powder of a mineral that generates negative ions by pressurization and / or a change in temperature, and an inorganic antibacterial agent; A method for producing a cork board, comprising a step of pressurizing and solidifying a resin binder, the powder, and an inorganic antibacterial agent. 17. A step of mixing and stirring the crushed cork material and the resin binder; a step of pressing and mixing the mixed and stirred cork material and the resin binder to form a cork substrate; And / or a step of infiltrating the cork substrate with a mixed paint containing a mineral powder that generates negative ions by a change in temperature under pressure. 18. The method according to claim 17, wherein said mixed paint further contains an inorganic antibacterial agent. 19. The cork board manufacturing method according to claim 17, wherein, in the step of infiltrating under pressure, the mixed paint has an infiltration value of 11 to 110 g / m ² with respect to the cork board.