JP2010094378A - Sheet-like material with adsorption decomposition layer formed on its surface and method of execution of the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sheet material with an adsorption decomposition function; this sheet has a uniform air purification function, is rich in design nature and can be used by being adhered to structure ceiling or wall surfaces. <P>SOLUTION: A paint containing a volatile organic substance (VOC) and having a function to adsorb and decompose odor ingredients, using the catalytic effects of bamboo charcoal, is produced by kneading and burning bamboo charcoal powder and clay together, and then crushing and mixing the resulting white porous burnt material in an inorganic paint. The subject sheet-like material with an adsorption decomposition layer formed on its surface is obtained by evenly applying this paint to the surface of a fibrous air-permeable flexible sheet and then drying it. This sheet is adhered to structure component surfaces with adhesives in order to purify the structure indoor air. It is also possible to form an adsorption decomposition layer on the back of this flexible sheet. The adsorption decomposition function can be added to the adhesives used by mixing the fine powder of this porous burnt material in the adhesives. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is composed of a volatile organic substance (hereinafter referred to as VOC) and a composition which is produced so that adsorption / decomposition / deodorization of odors can be efficiently and permanently performed and does not express harmful components upon destruction. The present invention relates to a sheet-like object having an air cleaning function in a building room and its construction.

  In recent years, various functions have been added to the wall surface or ceiling surface of a house. In addition to the traditional function of partitioning the space, (1) the living space is useful for health promotion, and (2) it does not generate harmful VOCs from the wall itself, but is also emitted from indoor building materials and housing equipment. VOC or the ability to absorb and decompose odors emitted by living humans and pet animals, (3) Antibacterial and antifungal performance, (4) Moisture adjustment, (5) Final destruction It is a situation where environmental destruction components such as dioxins are not generated or remain at the time of disposal.

  Recently, the effectiveness of bamboo charcoal has been demonstrated to have functions such as deodorization, decomposition, and antibacterial of VOC, and white products derived from bamboo charcoal have been developed. Furthermore, a technology for converting these products into powders is also disclosed. Although there are many paints on the market, these paints are generally applied on-site with rolls, brushes, sprays, etc., so the on-site curing and coating man-hours are 2-3 times. During that time, the room becomes unusable. In addition, since there is a painting work, a large amount of paint usage fee is used in order to make bamboo charcoal function more than a certain level. In particular, when used at a renovation site, the original wall color is diversified, and the amount of paint used tends to increase in order to ensure a certain color. Moreover, it is difficult to give the texture or pattern of the material, and it depends only on the painting, and the design is not considered much. Although the function of air cleaning can be secured, it is time-consuming and costly for manual work because of construction on site, and a simpler method is desired.

The main prior art is as follows, but the technology for converting to paint is the main, and there is no description of specific means for efficiently using these paints for buildings.
JP 2002-167287 A JP 2002-302635 A JP 2004-331682 A

In order to paint a paint using bamboo charcoal at a construction site or a renovation site, on-site curing is required so as not to contaminate a place other than the place to be painted. Also, the painted part is not limited to a smooth surface, and it is manually applied to ensure an air cleaning function, so a large amount of paint is used. If this type of water-based paint is applied many times at once, it will crack when dried. As a guide, the amount applied at one time is 200 g / m ² or less. Accordingly, two to three coatings are required, and approximately 2-3 times are required from curing to painting to drying. It is difficult and very expensive to apply patterns.

  As another technology, there is a functional wallpaper in which a titanium paste is kneaded into a vinyl chloride paste or a functional wallpaper in which a metal salt / nitrogen compound that decomposes by reacting with a specific organic substance is kneaded. It has a great impact on the global environment, such as generating dioxins during incineration. In order to solve these problems, there is a need for a technology that is inexpensive to provide an indoor space that is a material friendly to the global environment, has high design properties, and efficiently and permanently absorbs and decomposes VOC / bad odor components.

  A white porous fired product obtained by kneading and firing bamboo charcoal powder and clay is pulverized and mixed in the paint to form a paint having a function of adsorbing and decomposing volatile organic substances (VOC) and odor components. The paint is applied at the factory using a coating machine such as a knife coater. The base fabric to be coated is preferably a fibrous flexible sheet having air permeability, and the paint is applied almost evenly on at least one side thereof and dried to adsorb and decompose volatile organic substances (VOC) and odor components. A sheet-like material having a layer formed thereon is obtained. Since the flexible sheet has air permeability, a more efficient sheet-like material can be provided by applying the paint to the back side of the sheet to form an adsorption / decomposition layer. The sheet-like material may be processed into a long shape, wound and stored in a roll shape. At the construction site, the VOC is adsorbed and / or decomposed and deodorized by applying an adhesive to the back of the sheet-like material and affixed to a building frame such as a wall or ceiling. A space is obtained.

  Since the surface of the adsorption / decomposition layer formed on the sheet-like material is smooth and a decorative surface can be formed by printing a pattern or the like in a multi-color with a printing machine, the design effect can be enhanced. The printing surface is air permeable and does not interfere with air cleaning. Further, the embossing machine can be used to finely emboss the adsorptive decomposition layer to give an uneven surface to the decorative surface, and the surface area can be increased to further enhance the adsorptive decomposition function. These processes can only be performed at a well-equipped processing plant and cannot be performed by on-site painting.

  In order to attach the sheet-like material on which the volatile organic substance (VOC) and the odor component of the present invention are adsorbed and decomposed in the field, they are stuck using an adhesive. The sheet-like material stored in a roll shape is cut into a desired length, and an adhesive is applied to the back side of the sheet-like material with a roll coating machine, and is adhered to a building frame such as a wall or a ceiling. If the construction area is large, place the ends close together. It is necessary to cut the width of the sheet-like material at a predetermined length in advance. Further, the porous fired product powder using bamboo charcoal or charcoal as an adhesive may be mixed and pasted. There is an effect of increasing the volume of the adsorption decomposition layer, and the function of absorbing and / or decomposing VOC and odor is increased. This effect is due to the fact that the base sheet is paper or non-woven fabric, so that moisture or odor particles pass between the fibers and reach the back surface. Photocatalytic action using fine powders such as TiO2 requires light including ultraviolet rays, but bamboo charcoal does not require light and is an adsorption and / or decomposition function due to the catalytic effect of fine pores, and its action is continuous. Done.

  The paint having the function of adsorbing and decomposing used in the present invention comprises a white porous fired powder obtained by kneading and baking bamboo charcoal powder and clay as a pigment, and porous particles such as activated carbon or barley stone. As the inorganic pigment and binder, those having a silica-based inorganic component as a main component are preferable. Not only bamboo charcoal but also charcoal is used, and as a paint, a moisture-permeable acrylic emulsion resin paint is also used. Therefore, environmental destruction components such as dioxins are not generated or remain at the time of final disposal. As the base sheet, paper or non-woven fabric made of wood pulp is used, and these are natural materials and environmentally friendly materials.

  Tables 1 and 2 show the effects obtained in the present invention by comparing the field construction and PVC wallpaper, which are conventional techniques.

  Adsorption / decomposition layer comprising a coating layer of a functional paint that adsorbs and / or decomposes VOCs, which is obtained by mixing powder of white porous fired product obtained by kneading and firing bamboo charcoal powder and clay. The best mode for forming the wall on the building surface of the building such as the ceiling or wall of the room is paper or paper made from wood pulp in advance in consideration of performance, workability, design, cost and adverse effects on the global environment. Coating the required amount on at least one side of the nonwoven fabric using a processing plant coating machine, printing and / or embossing as necessary, winding it into a sheet and storing it in a roll; It is also possible to appropriately coat the back surface of the sheet-like material.

  The structure of the sheet-like material in which the adsorptive decomposition layer of the present invention is formed will be described with reference to FIG. By applying a water-based adhesive 5 on the back surface of the sheet-like material 1 and attaching it to a building housing 6 such as a ceiling surface or a wall surface, the adsorption decomposition layers 2 and 4 containing the powder 7 of the porous fired product are made to have a constant thickness. It can be formed. It is possible to increase the ability to decompose VOC and its odor by mixing the porous fired powder 7 with the adhesive layer 5 as required. These effects are obtained by the presence of the powder particles 7 of the porous fired product in the upper and lower surfaces of the paper 3 made of wood pulp and in the adhesive and in the adhesive as shown in FIG. 1, and air 8 containing VOC and odor components. Is first absorbed by the adsorption / decomposition layer 2, a part that is not absorbed is adsorbed to the adsorption / decomposition layer 4 formed on the lower surface of the paper through the air-permeable paper 3, and a part that is not further adsorbed is the porous in the adhesive. It is adsorbed by the powder of the fired fired product, decomposed regardless of day and night, and decomposed into water and carbon dioxide gas.

  It is necessary for the environment surrounding the earth that the adsorptive decomposition layer and paper or non-woven fabric do not discharge harmful components when incinerated or landfilled as a final treatment, and the paint used in the present invention is mainly natural components and inorganic The pigment is mainly composed of white porous fired powder obtained by kneading and baking bamboo charcoal powder and clay and inorganic pigment as pigment, and silica-based inorganic component and methacrylic ester polymer emulsion as binder. It is an ingredient. Therefore, environmental destruction components such as dioxins are not generated or remain at the time of final disposal.

  Tables 3 and 4 show examples of tests for environmental destruction.

As an example of a fibrous flexible substrate sheet, paper made from wood pulp of KP125 (manufacturer name: AHLSTROM FINLAND 125 g / m ² ) is used, and the paint is white obtained by kneading and baking bamboo charcoal powder and clay. The porous fired product powder is mixed and used in a paint mainly composed of a silica-based inorganic component and a methacrylic ester polymer emulsion. An example of such a paint is a paint (trade name: for Landex Super Cloth) manufactured by Dainichi Giken Kogyo Co., Ltd. The paint 100 prepared in a beige color was adjusted by blending sodium acrylate 1, mineral fluorine-based water repellent 0.6, defoaming agent 0.5, and water 25. The prepared paint was uniformly applied to the surface of the paper 3 at a rate of 160 to 165 g / m ² wet using a knife coater. The work was continuously applied to the upper surface of a roll paper having a width of 1 m, passed through an atmosphere of a dryer (total length 30 m, 80 ° C.) for 2 minutes, dried to form the adsorptive decomposition layer 2 and wound up into a roll.

  Next, using a gravure printing machine, the texture pattern was printed with one head on the surface coated with the beige color paint, dried and wound up. Next, a texture plate was placed on the embossing machine, and the texture was embossed and wound up. Finally, inspection was performed, and the rolls were rolled into 50 m rolls.

  The wall of the old room was remodeled using the sheet-like material produced in the above process. First, all existing PVC wallpaper was removed. The part with unevenness was repaired with a putty. The sheet A was cut according to the height of the wall.

Next, wallpaper bond (manufactured by Yazawa Chemical Co., Ltd.) is applied to the back side of the sheet-like material A at a rate of 150 g / m ² and cured for 15 to 30 minutes. Went.

  As a result, it was possible to form a uniform coating film with high designability by applying a sheet-like material on which an adsorption decomposition layer containing a powder of a porous fired product containing bamboo charcoal powder was blended. Such work does not require on-site curing like painting work, and does not require paint drying work, so it is possible to ensure fast construction and uniform function. In terms of design, wall surfaces with higher design were obtained compared to on-site painting. The test specimen A is a test specimen for VOC adsorption / decomposition ability according to this specification. The test body adhered an acrylic resin plate on the back side to eliminate the influence from the back side.

In the preparation of the sheet-like material of Example 1, after applying and drying a paint mixed with a porous fired powder containing bamboo charcoal powder on the surface, it was further applied to the back surface at a rate of 80 g / m ² and dried on both sides. The sheet-like material on which 2 and 4 are formed is printed and embossed and wound up. This sheet is constructed in the same manner as in Example 1. A specimen for VOC adsorption / decomposition ability according to this specification is designated as specimen B. The test body adhered an acrylic resin plate on the back side to eliminate the influence from the back side.

Indoor construction was performed using the sheet-like material produced in Example 2. The sheet-like product 1 was bonded to the wallpaper bond (manufactured by Yazawa Chemical) 100 with an adhesive layer 5 in which 3% of a porous fired product powder containing bamboo charcoal powder was mixed. The amount of adhesive applied to the sheet was 150 g / m ² . A specimen for VOC adsorption / decomposition ability according to this specification is designated as specimen C. The test body adhered an acrylic resin plate on the back side to eliminate the influence from the back side.

  In order to test the adsorption / decomposition performance of this sheet-like material, the ammonia gas 13 adjusted to 200 ppm is filled in a closed container 10 of 5? Shown in FIG. 2, and a test body 12 is put therein to gas every predetermined time. The gas concentration was measured using the detection tube 11. This test is called adsorption / decomposition performance test 1. As a comparative test specimen for testing adsorption / decomposition performance, PVC wallpaper without VOC adsorption / decomposition ability is attached to a 5cm x 10cm acrylic board with wallpaper bond (manufactured by Yazawa Chemical Co., Ltd.) and a blank specimen for adsorption / decomposition test It was. The test results are shown in Table 5. It can be seen that the daily decomposition ability increases from test body A to test body C.

  After the lapse of 24 hours, the same specimen was placed in a container with an ammonia gas concentration of 200 ppm, which was separately adjusted, and the ammonia concentration after 24 hours was examined. This test was repeated five times to examine changes in adsorption / decomposition ability. The test results are shown in Table 6 with this test as adsorption / decomposition performance test 2.

  From this test result, it can be seen that the disassembly capability of the C specification is the highest. White porous firing containing bamboo charcoal powder in places where there are many recesses / projections that cannot be bonded, although a coating with a design applied in advance is laid on the ceiling or wall surface of the room by means of bonding. Functionality can also be imparted by a combination of a work of applying and applying a paint mixed with a product powder on site and an application work.

  The sheet-like material on which the adsorptive decomposition layer of the present invention is formed is attached to a building housing such as a ceiling surface or a wall surface of a building via an adhesive, and is volatile organic substance (VOC) that stays in the room or a person or pet. It continues to absorb and / or decompose semi-permanently the unpleasant odors and the like produced by living small animals. It also has antibacterial and antifungal functions and generates negative ions to create a comfortable space. Therefore, it is also preferably used for new construction or renovation of wall surfaces in hospitals and nursing homes. It is an environmentally friendly material that does not generate harmful gases such as dioxin even when it is incinerated at low temperature, even when it is disposed of at a low temperature.

It is structure explanatory drawing of the sheet-like material in which the adsorption decomposition layer of this invention was formed. (Example 1) It is explanatory drawing of an ammonia gas concentration test container. Example 4

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sheet-like material 2 Adsorption decomposition layer 3 Paper 4 Adsorption decomposition layer 5 Adhesive layer 6 Building housing 7 Porous fired powder 8 Air containing VOC 10 Sealed container 11 Gas detector tube 12 Specimen 13 Ammonia gas 200 ppm environment

Claims (8)

  A white porous fired product obtained by kneading and firing bamboo charcoal powder and clay is pulverized and mixed in the paint to form a paint having the function of adsorbing and decomposing volatile organic substances (VOC) and odor components. A sheet-like product in which the coating material is applied onto at least one side of a breathable fibrous flexible sheet and dried to form an adsorptive decomposition layer.   2. The sheet-like material having an adsorptive decomposition layer according to claim 1, wherein the air-permeable fibrous flexible sheet is paper or non-woven fabric made of wood pulp.   The sheet-like material in which the adsorption / decomposition layer according to claim 1 or 2 is formed on both the front side and the back side of the flexible sheet.   The sheet-like object in which the adsorption decomposition layer of any one of Claims 1-3 which formed the decorative surface by printing on the surface of the said adsorption decomposition layer was formed.   The sheet-like object in which the adsorption / decomposition layer according to any one of claims 1 to 4 is provided with an uneven surface formed by embossing on the adsorption / decomposition layer.   The sheet-like material having the adsorption / decomposition layer according to any one of claims 1 to 5, wherein the adsorption / decomposition layer and the flexible sheet are made of a natural or inorganic material.   The construction method of the sheet-like object which formed the adsorption decomposition layer of any one of Claims 1-6 which affix on the housing of a building using an adhesive agent, and clean indoor air.   The sheet | seat which formed the adsorption decomposition layer of any one of Claims 1-6 which affix on the housing of a building using the adhesive agent which grind | pulverized and mixed the said porous baked material, and cleans indoor air Construction method of the object.

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