JP2005048439A - Humidity conditioning building material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a humidity conditioning building material superior in an outward appearance of a surface, maintenability, and humidity conditioning performance. <P>SOLUTION: This humidity conditioning building material is constituted by adhering a moisture permeable decorative sheet 4 to a humidity conditioning base material 1 having humidity conditioning performance by an adhesive 3a blended with a humidity conditioning material 2. The humidity conditioning building material of such a constitution allows the humidity conditioning material 2 to exist in an adhesive layer 3 between the humidity conditioning base material 1 and the moisture permeable decorative sheet 4, and does not impair the humidity conditioning performance of the humidity conditioning base material 1 by allowing moisture to pass through the humidity conditioning material 2 blended into the moisture permeable decorative sheet 4 and the adhesive layer 3. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a humidity control building material used as a building material for a house such as a wall material or a ceiling material.

  In recent years, Japanese houses have become highly humid because of the increased airtightness in recent years. As a result, condensation is likely to occur, and the present situation is that it has adverse effects on health, such as the occurrence of mold and mites that cause allergies.

  On the other hand, in order to prevent this high humidity state, an air conditioner, a dehumidifier or the like is excessively used, and as a result, the room may be overdried.

  Therefore, in order to solve such problems, humidity control building materials having increased humidity control ability by using a wall material containing a humidity control material such as diatomaceous earth have been used.

  A surface decorative material such as a decorative veneer or a vinyl chloride cloth is pasted on the surface of the base material having humidity control properties from the viewpoint of appearance and maintenance. For example, Patent Document 1 discloses a decorative veneer pasted on the surface of a substrate having humidity control properties via an adhesive.

  However, as described above, if a vinyl chloride cloth or the like is pasted on the surface of the base material having humidity control properties from the viewpoint of appearance and maintenance, the humidity control property of the base material is impaired. As such a surface decorative material, a material having moisture permeability is used.

However, even if a moisture-permeable surface cosmetic material is used, the adhesive layer forms a resin layer between the base material and the surface cosmetic material, and the resin layer inhibits the passage of moisture. There was a problem that the humidity control function of the substrate did not work sufficiently.
JP 2002-178444 A

  The present invention was invented in view of the above-described conventional problems, and it is an object of the present invention to provide a humidity control building material having a good surface appearance, good maintainability, and excellent humidity control. is there.

  In order to solve the above-mentioned problems, a humidity control building material according to the present invention is formed by adhering a moisture-permeable decorative sheet 4 to a humidity control substrate 1 having humidity control properties by using an adhesive 3a containing the humidity control material 2. It is characterized by this.

  By adopting such a configuration, the humidity control material 2 is present in the adhesive layer 3 between the humidity control substrate 1 and the decorative sheet 4 having moisture permeability, and the decorative sheet 4 and adhesive layer having moisture permeability are present. Therefore, moisture can pass through the humidity control material 2 blended in No. 3, and the humidity control property of the humidity control substrate 1 is not impaired.

  Moreover, it is preferable that 10-50 weight% of humidity control materials 2 are mix | blended with the adhesive agent 3. FIG.

  By setting it as such a structure, the moisture permeability between the humidity control base material 1 and the decorative sheet 4 which has moisture permeability can be ensured, without reducing the original adhesive function of the adhesive agent 3a.

  Moreover, it is preferable that the particle diameter of the humidity control material 2 mix | blended with the adhesive agent 3a is substantially the same as the thickness of the adhesive bond layer 3. FIG.

  By adopting such a configuration, the humidity control material 2 present in the adhesive layer 3 becomes a moisture bridge that transmits moisture between the humidity control base material 1 and the decorative sheet 4 having moisture permeability, and the humidity control base The humidity control property of the material 1 can be reliably exhibited.

  In the present invention, the humidity control material is present in the adhesive layer between the humidity control substrate and the decorative sheet having moisture permeability, and moisture can pass through the moisture control material blended in the moisture permeable sheet and the adhesive layer. The humidity-controlling property of the humidity-controlling substrate is not impaired, and this makes it possible to provide a humidity-controlling building material that has a good surface appearance, good maintainability, and excellent humidity-controlling properties.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  Although various things can be considered as the humidity control substrate 1, any material may be used as long as it has a high humidity control performance and has strength that can be used as a building material for a house such as a wall material or a ceiling material. . For example, inorganic materials such as gypsum board, cement board, calcium silicate board, rock wool fiber board, etc. that have moisture conditioning by blending humidity conditioning materials such as activated carbon, diatomaceous earth, silica gel, zeolite, allophane, activated clay, sepiolite, etc. Wood materials such as wood fiber board, plywood and particle board can be considered.

  The decorative sheet 4 is laminated on the surface of the humidity control substrate 1 to make up the surface of the humidity control substrate 1, and this decorative sheet 4 has moisture permeability, such as paper and nonwoven fabric. Of course, a material with high moisture permeability can be used, but it is possible to make many fine holes even in materials that are not originally moisture permeable, such as synthetic resin sheets such as vinyl chloride resin sheets. It can have moisture permeability.

  The adhesive 3a for adhering the decorative sheet 4 to the humidity control substrate 1 is familiar to the humidity control substrate 1 and the decorative sheet 4, and has its own humidity control (moisture absorption and desorption). Is preferably used. For example, a vinyl acetate resin, PVA, etc. can be mentioned.

  And in this invention, what mix | blended the humidity control material 2 with this adhesive agent 3a is used, and the way of the mixing of the humidity control material 2 mix | blends the humidity control material 2 beforehand with the adhesive agent 3a. It may be applied, or the adhesive 3a may be applied to either the humidity control substrate 1 or the decorative sheet 4 and the humidity control material 2 may be sprayed on the adhesive 3a. Activated carbon, diatomaceous earth, silica gel, zeolite, allophane, activated clay, sepiolite, etc. can be used as the humidity control material 2 to be blended in the adhesive 3a. The amount of the humidity conditioning material 2 added to the adhesive 3a increases as the amount of the humidity conditioning material 2 increases. However, if the amount is too large, the adhesive strength decreases. However, 10 to 50% by weight is desirable, and if it is within this range, moisture permeability between the humidity control substrate 1 and the moisture-permeable decorative sheet 4 is ensured without deteriorating the original adhesive function of the adhesive 3a. be able to.

  Moreover, the particle diameter of the humidity control material 2 mix | blended with the adhesive agent 3a uses a thing of 200 micrometers or less. Here, it is preferable that the particle diameter of the humidity control material 2 blended in the adhesive 3a is substantially the same as the thickness of the adhesive layer 3 to which the adhesive 3a is applied. That is, the thickness of the adhesive layer 3 is set to about 100 to 200 μm, and the particle diameter of the humidity control material 2 is also set to 100 to 200 μm.

  Thus, the humidity-control building material of the present invention has a moisture-permeable decorative sheet 4 bonded to the humidity-control base material 1 having the humidity-control property, as shown in FIG. With such a configuration, the humidity control material 2 is present in the adhesive layer 3 between the humidity control substrate 1 and the decorative sheet 4 having moisture permeability, and has moisture permeability. Moisture can pass through the humidity control material 2 blended in the decorative sheet 4 and the adhesive layer 3 so that the humidity control property of the humidity control substrate 1 is not impaired.

  In the case where the particle diameter of the humidity control material 2 blended in the adhesive 3a is substantially the same as the thickness of the adhesive layer 3 to which the adhesive 3a is applied, as shown in FIG. One end of the wet material 2 contacts or bites into the humidity control substrate 1 and the other end of the humidity control material 2 abuts or bites into the decorative sheet 4, so that the humidity control material 2 present in the adhesive layer 3 is present. It is a moisture bridge that allows moisture to permeate between the humidity control substrate 1 and the decorative sheet 4 having moisture permeability, and the humidity control property of the humidity control substrate 1 can be more reliably exhibited. .

  Of course, when the humidity control material 2 is smaller than the thickness of the adhesive layer 3, the humidity control material 2 in contact with the decorative sheet 4 and the humidity control material 2 in contact with the humidity control substrate 1 are directly applied in the adhesive 3 a. By contacting or contacting with each other via another humidity control material 2, a moisture bridge that transmits moisture between the humidity control substrate 1 and the decorative sheet 4 having moisture permeability is formed. Further, even if the humidity control materials 2 are not in contact with each other, if the humidity control materials 2 are close to each other, when the adhesive 3a itself has a humidity control (moisture absorption / release property), the close humidity control materials 2 Moisture can be transmitted through each other.

(Example 1)
Applying 150 g / cm ^{2 of} a 12 mm thick gypsum board containing 30% by weight of diatomaceous earth and 10% by weight of silica gel having a particle size of 180 μm to be used as a humidity control material to an emulsion type vinyl acetate resin adhesive, 170 μm A thick adhesive layer was formed, and an olefin sheet having φ2 mm holes formed at intervals of 5 mm was pasted to obtain the humidity control building material of Example 1.

(Example 2)
Applying 150 g / cm ^{2 of} a 12-mm thick gypsum board containing 30% by weight of diatomaceous earth and 30% by weight of silica gel having a particle size of 180 μm to be used as a humidity control material to an emulsion type vinyl acetate resin adhesive, 170 μm A thick adhesive layer was formed, and an olefin sheet with φ2 mm holes formed at intervals of 5 mm was attached to obtain the humidity-controlling building material of Example 2.

(Example 3)
Applying 150 g / cm ^{2 of} a 12 mm thick gypsum board containing 30% by weight of diatomaceous earth and 50% by weight of silica gel having a particle size of 180 μm to be used as a humidity control material to an emulsion type vinyl acetate resin adhesive, 170 μm A thick adhesive layer was formed, and an olefin sheet having φ2 mm holes formed at intervals of 5 mm was pasted to obtain the humidity-control building material of Example 3.

(Comparative example)
Humidity control of a comparative example by applying 150 g / cm ^{2 of} emulsion type vinyl acetate resin adhesive to a 12 mm thick gypsum board containing 30% by weight of diatomaceous earth and pasting an olefin sheet with φ2 mm holes at 5 mm intervals A building material was obtained.

  Table 1 below shows the results of the evaluation of humidity control and the evaluation of beating strength of the humidity control building materials of Examples 1 to 3 and Comparative Examples.

In addition, evaluation of humidity control property is sealed with aluminum tape except for the decorative sheet surface of each sample of the humidity-controlled building materials of Examples 1 to 3 and Comparative Example, 25 ° C., 50% RH → 90% RH → 50%. from absorbing moisture of RH each 24 hours, the required 100 g / ^{m 2} or more as the humidity material, a 100 to 200 g / ^{m 2} ○, and 200 g / ^{m 2} or more double ◎ with. Moreover, less than 100 g / m < ² > was set as x.

  In addition, as for the evaluation of the beering strength, as the beering strength necessary for the interior wall material to which the decorative sheet is stuck, 2 kg or more is given as ◯, and 5 kg or more as double ◎.

  As is clear from Table 1 above, Examples 1 to 3 in which a decorative sheet having moisture permeability is bonded to a humidity-controlling substrate having humidity-controlling properties by an adhesive containing a humidity-controlling material are all beer strength. However, the comparative example shows poor humidity control.

It is sectional drawing of the humidity control building material of one Embodiment of this invention. It is a principal part expanded sectional view same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Humidity control base material 2 Humidity control material 3 Adhesive layer 3a Adhesive 4 Cosmetic sheet

Claims (3)

  A humidity control building material comprising a humidity control base material having a humidity control property, and a moisture-permeable decorative sheet bonded to the humidity control base material with an adhesive containing the humidity control material.   2. The humidity control building material according to claim 1, wherein 10 to 50% by weight of a humidity control material is blended in the adhesive. The humidity control building material according to claim 1 or 2, wherein the particle size of the humidity control material blended in the adhesive is substantially the same as the thickness of the adhesive layer.

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