JPH07108509A - Antibacterial decorative plate and its manufacture - Google Patents

Abstract

PURPOSE:To obtain antibacterial and mildewproof effects at low cost by providing a resin coat layer on the surface of a pattern layer and adding antibacterial particle around the surface of the resin coat layer. CONSTITUTION:After a resin coat layer is formed on the surface of a pattern paper impregnated with resin, antibacterial particle (having 0.3-8wt.% and a thickness of 3-50mum) is attached to the surface of the resin coat layer. The pattern paper, a core paper impregnated with resin, and a plywood are layered and hot-pressed so as to manufacture an antibacterial decorative plate. Accordingly, after the resin coat is formed on the surface of the pattern paper impregnated with resin, the antibacterial particle is attached to the surface of the resin coat layer. By attaching the antibacterial particle to the surface of the resin coat layer, an antibacterial decorative plate having excellent antibacterial effect and mildewproof effect can be manufactured by a very small quantity of antibacterial particle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative board having antibacterial and antifungal effects and a method for producing the same. More specifically, the present invention relates to an antibacterial decorative board having a resin coating layer containing antibacterial particles on the surface and producing the same. Regarding the method.

[0002]

2. Description of the Related Art In recent years, nosocomial infections caused by MRSA (methicillin-resistant Staphylococcus aureus) in hospitals have become a major social problem, and doctors and nurses' white coats, clothing and sheets for patients,
It is required that curtains in hospitals and interior materials such as partitioning materials have antibacterial properties. For example, polyester fibers to which antibacterial ceramic particles are added or fibers to which ammonium salt antibacterial materials are fixed are white coats and curtains. And plastics containing antibacterial ceramic particles have been developed.

Further, decorative plates and the like used as interior materials in hospitals are also required to have antibacterial effects. However, generally, as a means for imparting an antibacterial effect to a decorative plate, it is considered that a decorative paper is laminated as a pattern paper by impregnating a pattern paper impregnated with a resin mixed with antibacterial particles to produce a decorative plate. When a patterned paper impregnated with a mixed resin is used, an extremely large amount of antibacterial particles are required, which is not only economical but also easily deteriorates the design property which is an important function as a decorative board. A means for imparting antibacterial properties without deteriorating the design property, which is an important function as, has not yet been developed, and the surface of synthetic veneer that has been conventionally used as an interior material in hospitals is synthetic. Only the surface finish is made of resin, and no particular consideration is given to the sterilization and antibacterial properties of these surfaces.

[0004]

DISCLOSURE OF THE INVENTION The present invention is required to impart the above-mentioned antibacterial and antifungal effects at a low cost without deteriorating the functions such as designability as an interior cosmetic material for buildings. Can answer to the hospital, kitchen,
It is an object of the present invention to provide a suitable antibacterial decorative board for a dining room, a bathroom, etc. and a method for producing the same.

[0005]

[Means and Actions for Solving the Problems] The inventors of the present invention have conducted extensive studies to solve the above problems,
The present invention has been conceived of an antibacterial decorative board and a manufacturing method thereof as described below. That is, the gist of the present invention is (1) having a resin coating layer on the surface of a pattern layer, the resin coating layer containing 0.3 to 8% by weight of antibacterial particles and having a thickness of 3 to 50 μm. An antibacterial decorative board characterized by the above. (2) After forming a resin coat layer on the surface of a resin-impregnated pattern paper, antibacterial particles are attached to the surface of the resin coat layer, and then the pattern paper, resin-impregnated core paper and plywood are laminated And a hot pressing method for producing an antibacterial decorative board. (3) The method for producing an antibacterial decorative board according to (2), wherein the surface of the resin coat layer is sprinkled with antibacterial particles or a suspension of antibacterial particles is applied to adhere the antibacterial particles. (4) In the method for producing an antibacterial decorative board according to (2), the resin forming the resin coat layer is at least one selected from melamine resin, polyester resin, acrylic resin, and diallyl phthalate resin. is there.

The antibacterial decorative board of the present invention must have a resin coating layer on the surface of the pattern layer, and the resin coating layer must contain antibacterial particles near the surface. The reason is that the surface of the pattern layer has a resin coat layer, and the resin coat layer is a decorative plate containing antibacterial particles near the surface, so that an extremely small amount of antibacterial particles can be used. This is because the bacteria and bacteria touching the surface can be killed, the bactericidal effect can be continued for a long time, the human body is not toxic, and it is safe and very hygienic.

In the antibacterial decorative board of the present invention, it is advantageous that the resin coat layer has a thickness of 3 to 50 μm. The reason is that it is advantageous that the thickness of the resin coat layer is as thin as possible, but it is difficult to form a resin coat layer thinner than 3 μm. On the other hand, if it is thicker than 50 μm, the cost becomes high. This is because the decorative plate is liable to warp or the like, and the thickness of 5 to 20 μm is more advantageous.

In the present invention, the pattern layer is generally a pattern paper on which colors, patterns, patterns, etc. are printed and which is impregnated with resin.

The antibacterial particles contained in the resin coating layer of the antibacterial raw decorative board of the present invention have a particle diameter (diameter) of 0.2 to 5 μm.
It is a ceramic particle in which silver is fixed to the surface by m.

The reason why it is advantageous that the ceramic particles have a particle size of 0.2 to 5 μm is that the particle size is preferably as small as possible, but it is not only difficult to obtain particles having a particle size smaller than 0.2 μm, This is because it is difficult to expose it to the surface to exert good antibacterial properties.
If it is larger than μm, the light transmittance of the resin layer is deteriorated by the ceramic particles, the pattern as a decorative plate becomes unclear, and the smoothness of the resin coat layer is easily impaired.

The antibacterial particles contained in the resin coating layer of the antibacterial decorative board of the present invention include, for example, calcium phosphate particles to which silver ions are attached, zeolite particles to which silver ions are attached, and silica. Ceramic particles having silver complexes attached to the particles can be used.

Next, a method for manufacturing the antibacterial decorative board of the present invention will be described. According to the present invention, after forming a resin coat layer on the surface of a resin-impregnated pattern paper, antibacterial particles are attached to the surface of the resin coat layer, and then the pattern paper, the resin-impregnated core paper and plywood. An antibacterial decorative board is manufactured by laminating and hot pressing.

According to the present invention, it is necessary to form a resin coat on the surface of a resin-impregnated pattern paper and then attach antibacterial particles to the surface of the resin coat layer. The reason is that the resin coat layer has antibacterial particles adhered to the surface thereof, whereby an antibacterial decorative board having an excellent antibacterial effect and antifungal effect can be produced with an extremely small amount of antibacterial particles.

According to the present invention, it is advantageous that the resin layer has antibacterial particles adhered to the surface thereof at a rate of 0.1 to 10 g / m ² . The reason is that the amount of antibacterial particles attached to the resin coating layer is 0.1 g.
/ M less than ² and is because the antimicrobial antibacterial particles is difficult to sufficiently exhibit, whereas when it is more than 10 g / m ^2, not only uneconomical, transparency and glossiness of the resin layer This is because it becomes difficult to produce a cosmetic material excellent in aesthetics, and in particular, 0.5 to 5 g /
Advantageously, it is deposited at a rate of ² m.

According to the present invention, it is preferable that the surface of the resin coating layer is sprinkled with antibacterial particles or a suspension of antibacterial particles is applied to adhere the antibacterial particles.

As means for applying the suspension of the antibacterial particles, various means such as spraying, curtain coating and brush coating can be applied.

As the resin forming the resin coat layer, it is preferable to use at least one selected from melamine resin, polyester resin, acrylic resin and diallyl phthalate resin. The present invention will be described in detail below based on examples.

[0018]

【Example】

(Example 1) Melamine resin having a solid content of about 48% was weighed at 112 g / m ² , titanium oxide was contained at 34%, and the impregnation rate of melamine resin (impregnation rate = weight of resin / resin) The weight of the entire impregnated paper) is applied to the surface of the pattern paper with a weight of 40% at a rate of 60 g / m ² using a roll coater,
A resin coat layer having a thickness of 7 μm was formed.

Next, as the antibacterial particles, a suspension of particles in which silver ions are adhered to zeolite particles having an average particle diameter (diameter) of 1 μm is spray-coated, and the antibacterial particles are approximately 1 g / m 2.
^It was attached at a rate of ² .

A pattern paper similar to the pattern paper used to form the pattern paper is impregnated with a melamine resin, and the melamine resin impregnation rate (impregnation rate = weight of resin amount / weight of the entire resin impregnated paper) is 30% core paper was obtained. Then, according to a general method for producing a melamine resin decorative board, one pattern paper on which the resin coat layer is formed is used as an uppermost layer, and three core papers are laminated under the uppermost layer, and a weight of 80 kg / cm ² at 150 ° C. Hot pressing was performed for 60 minutes under the conditions to obtain a melamine decorative board.

The decorative board of the present invention thus obtained and the conventional decorative board produced without blending the antibacterial particles are cut into approximately squares each having a side of 1 cm, and the cut surface is coated with a resin to formalin. A sample was prepared to prevent elution of E. coli, and phosphate buffer solution 1 in which E. coli was suspended at about 1.0 × 10 ⁵ cells / ml was prepared.
0 ml and Staphylococcus aureus 7.0 × 10 ⁴ cells / m
1) Immerse each in 10 ml of suspended phosphate buffer and
After culturing at 5 ° C for 24 hours, the number of E. coli and the number of Staphylococcus aureus were measured, and the results are shown in Table 1.

[0022]

[Table 1]

From the results shown in Table 1, it was confirmed that the decorative board of the present invention has an extremely excellent antibacterial effect.

Further, the decorative board of the present invention was not only excellent in antibacterial effect, but also had a clear pattern and excellent designability as a decorative board. Furthermore, JIS-K6902
Table 2 shows the results of the heat resistance evaluation conducted in accordance with the above and the light transmittance by visual evaluation. It is shown in Table 2. From the results shown in Table 2, it was confirmed that the decorative board of the present invention has an excellent function as a decorative board.

(Examples 2 to 5, Comparative Examples 1 to 3) Example 1
As shown in Table 2, as antibacterial particles, zeolite particles with silver ions attached, calcium phosphate particles with silver ions attached, and silica particles with silver complex pairs attached. Table 2 shows the results of the evaluation of the physical properties of a decorative board by using ceramic particles and the like, varying the particle size, the amount of adhesion, and the thickness of the resin coating layer to manufacture a decorative board.

[0026]

[Table 2]

It is recognized that all of the decorative boards of these Examples are excellent in the function as a decorative board as shown in the physical property evaluation results in Table 2, and also have excellent antibacterial effect and fungicidal effect. Was given.

[0028]

As described above, according to the present invention, it is possible to provide an antibacterial decorative board which is excellent in the function as a decorative board and also has an excellent antibacterial effect and fungicidal effect, and contributes to industry. The effect of doing is extremely large.

Claims (5)

[Claims] 1. A pattern coat has a resin coat layer on its surface, and the resin coat layer has 0.3% of antibacterial particles near the surface.
The antibacterial decorative board is characterized in that it is contained in an amount of ˜8% by weight and has a thickness of 3 to 50 μm. 2. The antibacterial particles have a particle size of 0.2 to
The antibacterial decorative board according to claim 1, wherein the antibacterial decorative board is a ceramic particle having a surface of 5 μm and silver adhered thereto. 3. A pattern layer impregnated with a resin is coated with a coating layer on the surface of the resin, antibacterial particles are attached to the surface of the resin coating layer, and then the pattern paper, the resin-impregnated core paper and plywood. A method for producing an antibacterial decorative board, which comprises laminating and hot pressing. 4. The production of an antibacterial decorative board according to claim 3, wherein the surface of the resin coating layer is sprinkled with antibacterial particles or a suspension of antibacterial particles is applied to adhere the antibacterial particles. Method. 5. The method for producing an antibacterial decorative board according to claim 3, wherein the resin forming the resin coat layer is at least one selected from melamine resin, polyester resin, acrylic resin and diallyl phthalate resin.