JP4251083B2 - Interior decorative board - Google Patents

Description

  The present invention relates to a decorative board. More specifically, the present invention relates to a decorative board for interior use that has a moisture control function such as moisture absorption and desorption and has an ability to adsorb chemical substances such as formaldehyde and has an excellent surface decoration effect.

  In recent years, airtightness of houses has been promoted from the viewpoint of energy saving, and therefore, moisture has accumulated in the room, which is one of the causes of condensation and mold. For example, in a house with a concrete outer wall, moisture can easily enter through the concrete and heat insulation is difficult. It causes stains and dirt, and there are concerns about health problems.

In addition, volatile chemicals such as formaldehyde generated from adhesives used for interior cloths and decorative sheets, furniture used in furniture, paints, etc. are combined with the high airtightness of the above houses. It stays in the environment and causes sick house syndrome that causes problems in the eyes, nose, throat, etc., which is a serious social problem. Various proposals have already been made to solve such problems, but this is not necessarily satisfactory.
Japanese Unexamined Patent Publication No. 2000-43221 (page 1-5, FIG. 1) JP-A-9-324062 (page 1-3) JP 2002-235382 A (page 1-4) JP 2003-25310 A (page 1-4, FIGS. 1-2)

  The present invention solves the above-mentioned problems, and when the humidity in the room is high, it can absorb moisture and condensed water in the air, and when dried, it can release the absorbed moisture to adjust the humidity. In addition, an object of the present invention is to provide an interior decorative board that can adsorb and remove volatile chemical substances such as formaldehyde and has an excellent surface decoration effect.

The present invention has been devised to solve the above-described problems, and has the following technical means. That is, according to the present invention, in the interior board formed by attaching the humidity-controlling substrate and the decorative sheet, the adhesive surface of the humidity-controlling substrate is treated with a sealer containing a chemical substance adsorbent, and then the solvent adhering the decorative sheet by system adhesive, further, with drilling pore diameter 0.5~2.0mm by punches, Ri their porosity is from 0.5 to 2.0 percent der, solvent Interior decoration, characterized in that pores are perforated on the surface after the decorative sheet is bonded with a base adhesive so as to reach a humidity-controlling base material layer treated with a sealer containing a chemical substance adsorbent A board is provided.

  The shape of the hole to be perforated is not particularly limited, such as circular or rectangular, and the hole diameter is preferably 0.5 to 1.5 mm. The hole diameter is a diagonal line in the case of a rectangle and a diameter in the case of a circle. If the pore diameter and the area ratio are smaller than the above ranges, it is difficult to maintain the humidity control function, and if it is larger than the above ranges, the appearance is poor and the design is poor.

  The sealer is not particularly limited as long as it is familiar with inorganic materials and is a permeable liquid, but an acrylic resin-based, urethane resin-based emulsion paint or solvent-based paint is preferably used. The chemical adsorbent contained in the sealer includes, for example, activated carbon, zeolite, diatomaceous earth and other chemical substance adsorbents, or imidazoles, amines, amides, etc. that are chemically fixed by reacting with formaldehyde. Various compounds are used alone or in combination. The adhesive surface of the humidity-controlling substrate is treated with a sealer containing the chemical substance adsorbing material and attached to a decorative sheet. As an adhesive used at this time, known solvent-based adhesives such as vinyl acetate, modified resins thereof, and urethane resins are used, and are preferably used with a solid content of 30 to 70%.

While the said decorative sheet consists of designed paper or a nonwoven fabric, the basic weight shall be 30-100 g / m < ² >. The moisture permeability is preferably 200 g / m ² · 24 hours (JISZ-0208, 40 ° C., 90% RH) or more. Furthermore, in order to prevent the decorative surface from being stained or scratched, it is preferable that a surface protective coating is applied. When the basis weight exceeds 100 g / m ² , the moisture permeability of the decorative sheet itself is deteriorated, so that the intended humidity control effect cannot be obtained by the above perforation, and the basis weight is less than 30 g / m ^2. In this case, there is a problem in strength, which is not preferable.

The humidity control substrate is preferably composed of inorganic fibers and a humidity control inorganic material, and the moisture absorption, which is a measure of humidity control, is 200 to 300 g / m ² · 24 hours. The method for measuring the amount of moisture absorption will be described in detail in Examples. As the inorganic fibers, rock wool, glass wool and the like are preferably used, and as the humidity control inorganic material, zeolite, diatomaceous earth, silica gel, charcoal, bamboo charcoal and the like are preferably used.

  If necessary, add inorganic binders such as aluminum hydroxide, gypsum, water glass, etc., or organic binders such as vinyl acetate, starch, corn starch, casein, funari, etc. A humidity-controlling substrate is used.

  It is preferable that a moisture-proof treatment is further applied to the back surface of the humidity-controlling substrate. In this moisture-proof treatment, a paint may be applied or a sheet may be stuck. As the paint, acrylic resin-based and urethane resin-based paints are preferably used, and as the sheet, olefin resin-based and polyester resin-based sheets are preferably used, and a composite sheet obtained by laminating metal foil on paper or nonwoven fabric is pasted. You may wear it.

  The perforation is preferably performed by a mechanical perforation method. For example, a method using a music box type drilling machine having a round bar-like pin, or a method using a drilling machine in which conical and square pyramidal projections are provided on the circumference of a gear, and these projections are rotated to continuously drill. Various known mechanical drilling methods can be applied.

  The invention according to claim 1 is as described above, and in particular, the pores having a diameter of 0.5 to 2.0 mm are perforated by a perforator, and the aperture ratio is 0.5 to 2.0%. Therefore, when the humidity of the indoor space is high, moisture is absorbed by the humidity control substrate through the pores, and when the indoor space is dry, moisture is released from the humidity control substrate through the pores. Humidity adjustment can be performed reversibly. Furthermore, since the adhesive surface of the humidity control substrate is treated with a sealer containing a chemical substance adsorbent, harmful chemical substances in the adhesive or indoor air can be adsorbed and removed.

Together consist of the decorative sheet designed paper or nonwoven fabric, since its basis weight of 30 to 100 g / m ^2, and is the amount of moisture permeation is 200g / m ² · 24 hours (JIS method) or more, the Humidity can be effectively controlled in combination with moisture absorption / release from the pores.

While the humidity control substrate is composed of inorganic fibers and a humidity control inorganic material, and the moisture absorption is 200 to 300 g / m ² · 24 hours, humidity control can be performed effectively. Further, since the moisture-proofing treatment is further applied to the back surface of the humidity-controlling substrate, it is possible to prevent moisture from entering from the base and improve the back-surface adhesion to the base. Further, since the above-described drilling is performed by a mechanical drilling method, it is possible to continuously drill with good workability.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic diagram showing an outline of the production process of the interior decorative board A according to the present invention. First, as shown in FIG. 1, a sealer 2 containing a chemical substance adsorbent is applied to the adhesive surface of the humidity control substrate 1 with the decorative sheet 4, dried, and an adhesive 3 is applied on the sealer 2. A decorative sheet 4 is attached, and a moisture-proof paint 5 is applied to the back surface of the humidity control substrate 1 to form a composite board B.

  Next, with the music box type drilling machine S having a round bar type punching pin, holes 6 having a hole diameter of 0.5 to 1.5 mm are continuously drilled, and the hole area ratio becomes 0.5 to 2.0%. Thus, the interior decorative board A according to the present invention is obtained. Since the above-described pores 6 reach the humidity control substrate 1 layer, when the humidity of the indoor space is high, moisture is absorbed by the humidity control substrate 1 through the pores 6 and the indoor space is dry. The moisture is released from the humidity control substrate 1 through the pores 6, and the humidity control in the room is effectively performed by reversibly absorbing and releasing moisture. Further, harmful substances such as formaldehyde contained in the adhesive 3 are adsorbed and removed in contact with a chemical adsorbent such as activated carbon mixed in the sealer 2.

Hereinafter, the present invention will be described in more detail with reference to examples. In addition, the performance evaluation in an Example and a comparative example was performed by the method shown below.
[Humidity control]
The humidity control was evaluated by the amount of moisture absorption. That is, the surface other than the surface of the test sample was sealed with aluminum tape at 25 ° C. and a humidity of 50%, and was allowed to absorb moisture in an atmosphere of 25 ° C. and a humidity of 90% for 24 hours. Moisture absorption (g / m ² · 24 hours) = {W2g (weight after moisture absorption at 25 ° C., humidity 90%, 24 hours) −W 1 g (weight after curing at 25 ° C., humidity 50%)} / test sample Surface area (m ² ). The moisture absorption 150g / m ² · 24 hours or more Humidity good time ○, was determined the humidity conditioning Average △ As Humidity When 100~150g / m ² · 24 hours.

[Surface wipeability]
A 10 cm long line was drawn with a crayon, and it was evaluated whether it could be easily wiped off after 24 hours. The case where it was easy to wipe off was marked with ◯, the case where it was difficult to wipe off was marked with ×, and the middle was marked with Δ.

[Appearance design]
Judgment was made by visual observation, and the case where it was excellent was rated as “◯”, the case where it was inferior as “×”, and the middle as “Δ”.

[Surface dust]
Judgment was made by visual observation, and a case where almost no powder fall was observed was marked with ◯, a case where powder fall was severe was marked with X, and an intermediate between them was marked with Δ.

[Deodorization]
Adjust the acetic acid concentration in the space to 100 ppm, and place the test sample in the space so that the volume (sample volume (cm ³ ) / space volume (cm ³ )) is 5.6%. The odor after 24 hours was subjected to sensory evaluation. The case where the odor of acetic acid was not detected was indicated as ◯, the case where it was detected as ×, and the middle as △.

[Back side adhesion]
The gypsum board and the test sample that had not been moisture-proofed on the back surface were adhered with a vinyl acetate adhesive, and after curing for 1 week, the adhesive strength was measured. When the plane tensile strength is 1 kgf / cm ² or more, it is indicated as “◯”, and when it is less than 1 kgf / cm ^2, it is indicated as “x”.

10% by weight of B-type silica gel was blended with 50% by weight of rock wool, aluminum hydroxide, starch and the like were added and mixed well. First, when the moisture absorption amount of the humidity control substrate 1 itself was measured by the method described above, it was 250 g / m ² · 24 hours. Next, an acrylic emulsion paint added with 5% by weight of activated carbon as the sealer 2 was applied to the adhesive surface of the humidity control substrate 1 at a coating amount of 200 g / m ² and dried at 150 ° C. for 20 minutes. At the same time, only the acrylic emulsion paint was applied to the back surface of the humidity-controlling substrate 1 at a coating amount of 200 g / m ² to give a moisture-proof treatment and dried in the same manner.

Using a paper (basis weight 30 g / m ² ) on which a pattern was printed as the decorative sheet 4, a urethane two-component solvent-based adhesive was applied to the adhesive surface of the paper at a coating amount of 100 g / m ² and the sealer treatment was performed. The composite board B was obtained by bonding to the humidity control substrate 1 and pressing for 24 hours at 0.5 kg / cm ² . The composite board B thus obtained was perforated with a music box type drilling machine having a round bar type punching pin so that the hole diameter was 0.8 mm and the hole area ratio was 1.5%. A decorative board A was obtained. The moisture absorption of the interior decorative board A thus obtained was 160 g / m ² · 24 hours. Table 1 summarizes the performance evaluation.
[Comparative Example 1]
A test sample was obtained in the same manner as in Example 1 except that an olefin sheet printed with a pattern having a thickness of 4 μm was used as the decorative sheet 4. The moisture absorption of this sample was 100 g / m ² · 24 hours. Table 1 summarizes the performance evaluation.
[Comparative Example 2]
A test sample was prepared in the same manner as in Example 1 except that a 4 μm thick olefin sheet printed with a pattern was used as the decorative sheet 4 and the hole diameter was 0.8 mm and the hole area ratio was 5.0%. Got. The moisture absorption of this sample was 160 g / m ² · 24 hours. Since the pores were conspicuous, the appearance was not good. Table 1 summarizes the performance evaluation.
[Comparative Example 3]
Instead of the urethane two-component solvent adhesive in Example 1, PUR (reactive hot melt) was applied at a coating amount of 40 g / m ² , heated to 60 ° C., and pressed with a roll to control the humidity control group. A test sample was obtained in the same manner as in Example 1 except that the material 1 and the decorative sheet 4 were bonded together. The moisture absorption of this sample was 120 g / m ² · 24 hours. Table 1 summarizes the performance evaluation.
[Comparative Example 4]
As the sealer 2 in Example 1, only the acrylic emulsion paint without activated carbon was applied to the adhesive surface of the humidity-controlling substrate 1 at a coating amount of 200 g / m ² and dried at 150 ° C. for 20 minutes. A test sample was obtained in the same manner as in Example 1. This sample was evaluated for deodorizing properties. The performance evaluation is shown in Table 2.
[Comparative Example 5]
In Example 1, a test sample was obtained in the same manner as in Example 1 except that the back surface of the humidity-controlling substrate 1 was not coated and no moisture-proofing treatment was performed. About this sample, back surface adhesiveness evaluation was performed. Table 3 shows the performance evaluation.
[Comparative Example 6]
A test sample was prepared by a conventional method in which a moisture-adjusted coating wall material containing diatomaceous earth was applied to the surface of the gypsum board at an application amount of 1500 g / m ² and dried. The moisture absorption of this sample was 100 g / m ² · 24 hours. Table 1 summarizes the performance evaluation.

  From the above results, it is clear that the interior decorative board A according to the present invention is excellent in moisture absorption and desorption, and is also excellent in the adsorption of malodorous components such as deodorizing properties. Furthermore, since the surface wiping property is also good, it can be seen that dirt and scratches are difficult to be attached, and that the adhesion to the ground is good. Therefore, when it is used as a decorative board for interiors such as walls and ceiling materials, it is possible to create a comfortable living environment because it controls moisture while preventing condensation and has an excellent surface decoration effect.

It is a schematic diagram which shows the outline of the manufacturing process of the decorative board for interiors concerning this invention.

Explanation of symbols

A decorative board for interior according to the present invention B composite board 1 humidity control substrate 2 sealer 3 adhesive 4 decorative sheet 5 moisture-proof coating 6 pore S music box type punch

Claims (5)

In an interior board formed by adhering a humidity control substrate and a decorative sheet, the adhesive surface of the humidity control substrate is treated with a sealer containing a chemical substance adsorbent, and then the decorative sheet is coated with a solvent-based adhesive. adhered, further with drilling pore diameter 0.5~2.0mm by punches, the opening ratio is Ri 0.5 to 2.0% der, is decorative sheet by a solvent based adhesive bonding A decorative board for interiors , wherein pores are perforated on the surface after reaching the humidity control substrate layer treated with a sealer containing a chemical substance adsorbing material . The decorative sheet with consists designed paper or nonwoven fabric, the basis weight of 30 to 100 g / m ^2, and claim 1 volume moisture permeation is 200g / m ² · 24 hours (JIS method) or An interior decorative board as described in 1. The interior decorative board according to claim 1, wherein the humidity-controlling substrate comprises inorganic fibers and a humidity-controlling inorganic material, and has a moisture absorption of 200 to 300 g / m ² · 24 hours.   The interior decorative board according to claim 1, wherein a moisture-proof treatment is further applied to the back surface of the humidity-controlling substrate. The interior decorative board according to claim 1, wherein the perforation is performed by a mechanical perforation method.

Images