JP4122540B2 - Building material board that is mounted with a seat for environmental cleaning - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a building material board that is mounted with a cover sheet with an environmental purification function, and more particularly, a cover sheet for wallpaper, cloth, and the like that is used by being attached to the surface of a wall, partition, furniture, etc. of a house or office. A building material in which a cover sheet for adsorbing, decomposing and cleaning indoor volatile organic compounds such as formaldehyde, toluene and xylene, tobacco odor, mercaptan odor, etc. is attached to at least one side of the building material board. Regarding the board.
[0002]
[Prior art]
Plywood and various building material adhesives used as building materials for homes and offices contain volatile organic compounds (hereinafter abbreviated as VOC) such as formaldehyde, toluene and xylene. Harmful to humans. There is also a tendency of recent airtightness of houses and offices, and health damage called sick house syndrome and sick building syndrome caused by the VOC is a problem. In order to prevent such health damage, it is necessary to use building materials that do not contain VOCs or to remove VOCs after construction.
A bake out method is conventionally known as a method for removing VOC after construction. The bake-out method is a method of eliminating VOC intermittently in a short period of time. The room temperature is reduced to around 40 ° C in a state where the partitioned rooms (rooms) in the building (houses, buildings, etc.) are normally closed (unmanned). This is a method of raising and holding for a certain period of time to promote VOC emission, and then ventilating and exhausting by opening windows or using a blower.
Another method is to place a deodorant such as activated carbon in the room.
[0003]
[Problems to be solved by the invention]
Although the bakeout method has some effect on VOC removal, it is not always easy to efficiently remove VOC from the room. In addition, a heating device is required and the bake-out process is troublesome.
Moreover, it is difficult to effectively remove and decompose VOCs by a method in which a deodorant such as activated carbon is disposed indoors.
An object of the present invention is to provide a cover sheet that does not require a special device such as a heating device and can adsorb and decompose VOC existing in an indoor environment.
[0004]
[Means for Solving the Problems]
The present invention, mounting a single-sided (if there is a front and distinction of the back, the back surface) sheet building boards environmental purification function mounting sheet comprising been bonded together sheet-like environment purification material in having breathability building boards that are at least mounting on one side is provided.
The present invention is a building material board that is mounted with a cover sheet with an environmental purification function, in which a sheet-like environmental purification material is bonded to one side of a breathable cover sheet.
Further, the present invention is a cover sheet with an environmental purification function, in which a sheet-like environmental purification material is bonded to one side of a breathable surface attachment sheet, the sheet-like environmental purification material comprising: (a) a metal And / or metal oxide particles, (b) adsorbent particles, (c) thermoplastic resin particles, and (d) a fibrous base material of a breathable sheet, and metal and / or metal oxide particles (a) And the adsorbent particles (b) are bonded to the surface of the thermoplastic resin particles (c), the thermoplastic resin particles (c) are bonded at the contact portions of the particles, and the thermoplastic resin particles (c) are the breathable sheet. The building material board is bonded to the fibrous base material (d), and at least one surface of the building material board is mounted with the above-described sheet for mounting with an environmental purification function.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described with reference to the drawings. FIG. 1 is a front cover sheet (cross-sectional view) with an environmental purification function of the present invention. One surface (usually the back surface) of the air-permeable cover sheet 1 is bonded to and integrated with the sheet-like environmental purification material 2.
FIG. 2 is a building material board (cross-sectional view) that is mounted on the cover sheet with an environmental purification function of the present invention. The above-mentioned sheet for covering with an environmental purification function is laminated and integrated with the building material board 3 with the facing side outside (that is, with the environmental purification material inside).
Here, the cover sheet used in the present invention is a woven or non-woven fabric such as air-permeable paper or cloth, and one surface (front surface) is decorated with a pattern or the like that causes aesthetics. Is preferably used. It can be obtained from Aika Industry Co., Ltd., Asano Giken Co., Ltd., Asahi Kasei Kogyo Co., Ltd., Atom Chemical Co., Ltd.
[0006]
As a sheet-like environmental purification material,
(A) metal and / or metal oxide particles,
(B) adsorbent particles,
(C) thermoplastic resin particles, and (d) a fibrous base material of a breathable sheet,
The metal and / or metal oxide particles (a) and the adsorbent particles (b) are bonded to the surface of the thermoplastic resin particles (c) at the contact portions of the particles,
As the thermoplastic resin particles (c), a sheet-shaped environmental purification material bonded to the fibrous base material (d) of the breathable sheet is preferably used.
[0007]
Such a sheet-like environmental purification material is
(A) metal and / or metal oxide particles,
(B) adsorbent particles,
(C) thermoplastic resin particles,
(E) a water absorbent resin, and (f) water,
To make a uniformly dispersed suspension, and a predetermined amount of this suspension
(D) The fibrous base material of the breathable sheet is held,
The metal and / or metal oxide particles (a) and the adsorbent particles (b) are removed from the thermoplastic resin particles (c) while removing water by heating at a temperature not lower than the melting point of the thermoplastic resin or not higher than the thermal decomposition temperature. ) To be bonded to the fibrous base material (d).
[0008]
Here, as the metal particles and / or metal oxide particles (a), manganese, copper, zinc, iron, vanadium, nickel, magnesium, aluminum, titanium, palladium, platinum, cerium, silicon, silver, calcium, barium And metal particles such as strontium, and metal oxide (including metal peroxide) particles thereof. The metal oxide may be a metal complex oxide. Metal particles or metal oxide particles having an average particle size of 0.01 to 10 μm can be preferably used.
[0009]
Examples of the adsorbent particles (b) include activated carbon, zeolite, silica gel, sepiolite, activated alumina, hydroxyapatite, and activated clay. Use these adsorbent particles that carry aluminum sulfate, iodine, ferrous sulfate, calcium phosphate, sodium carbonate, magnesium silicate, boric acid, phosphoric acid, ascorbic acid, tartaric acid, oxalic acid, tannic acid, gallic acid, etc. be able to. The adsorbent particles may be used alone or in combination of two or more.
[0010]
Activated carbon includes plant carbonaceous matter (coconut shell, almond shell, etc.), charcoal, bituminous coal, etc., and synthetic resin carbonaceous matter (phenolic resin, etc.).
[0011]
The adsorbent particles preferably have such a size that particles passing through a 48 mesh screen (300 μm in particle size) occupy 50% or more of the adsorbent particles on a weight basis.
[0012]
The thermoplastic resin particles (c) are particles selected from ultrahigh molecular weight polyethylene, polyethylene, polycarbonate, polyamide ABS resin, polyimide, polyvinyl chloride, polysulfone, polystyrene phthalate, polypropylene, cellulose acetate and the like. These thermoplastic resin particles (c) have a role as a binder for bonding the metal particles and / or metal oxide particles (a) and the adsorbent particles (b) to the fibrous base material (d).
[0013]
As the thermoplastic resin particles, ultra high molecular weight polyethylene having an average molecular weight (measured by a viscosity method) of 1 million to 9 million is particularly preferably used. There are few monomer components, it has high stability against acids, alkalis, and organic chemicals, and it does not damage the surfaces of metal particles and / or metal oxide particles and adsorbent particles (a), and has an excellent removal function. This is because a porous structure having an appropriate strength can be obtained. As the thermoplastic resin particles, those having an average particle size of 20 to 150 μm are preferably used.
[0014]
As the fibrous base material (d) of the breathable sheet, a fibrous base material having a porosity of 60% to 99% is used. For example, a plastic woven material such as glass woven fabric / nonwoven fabric, polyethylene, polypropylene, polyamide, polyester, etc. Cloth / nonwoven fabric, paper, etc.
[0015]
The amount of the thermoplastic resin particles is usually 10 to 80 parts by weight with respect to 100 parts by weight of the total of the metal particles and / or metal oxide particles (a) and the adsorbent particles (b).
[0016]
As the water-absorbing resin (e) to be used, a resin that absorbs tens to thousands of times its own weight of water is preferably used. Acrylic acid-vinyl acetate copolymer saponified product, polyvinyl alcohol crosslinked polymer, polyacrylonitrile-based polymer saponified product, polyacrylate crosslinked polymer, starch-acrylonitrile graft copolymer, starch-acrylic acid graft copolymer, Starch-vinyl sulfonic acid graft copolymer, starch-styrene sulfonic acid graft copolymer, cellulose-acrylonitrile graft copolymer, cellulose-styrene sulfonic acid graft copolymer, carboxymethyl cellulose cross-linked polymer, polyethylene glycol diacrylate cross-linked polymer And polyvinylpyrrolidone-based crosslinked polymers.
[0017]
The amount of the water absorbent resin to be used varies depending on the type of the water absorbent resin. What is necessary is just to determine suitably about each. At this time, the property that serves as an index for determining the amount of water-absorbent resin used is the viscosity of the mixed particle suspension. The amount may be determined in advance so that the measured value at 25 ° C. is 10 to 500 cp, preferably 50 to 200 cp. Usually, it is about 0.01-1.0 weight part with respect to 100 weight part of water.
[0018]
The use of water as a solvent is that the characteristics of each particle can be maintained, there is no environmental pollution, and safety is high in preventing fire due to static electricity.
[0019]
As a method for retaining a certain amount of the aqueous suspensions (a), (b), (c) and (d) described above on the fibrous base material (d) of the breathable sheet, a dip impregnation method, a gravure A constant amount of suspension can be applied to or held on the fibrous base material by using a commonly used coating method (or coating machine) such as a coater method or a die head coater method.
[0020]
After a certain amount of the suspension is held on the fibrous base material, it is heated for a predetermined time at a temperature not lower than the melting point of the thermoplastic resin and not higher than its thermal decomposition temperature. By this heat treatment, moisture is evaporated and removed, and the surface layer portion of the thermoplastic resin particles becomes soft and has a bonding force. The thermoplastic resin particles whose surface layer portion has been softened and have a binding force retain the spherical particle shape, capture and bond the particles (a) and (b) on the surface, and the thermoplastic resin particles ( c) The two are bonded to the fibrous base material while being bonded to each other at the contact portion.
[0021]
The heating time is a time during which moisture is evaporated and removed, the surface layer softens while the thermoplastic resin particles keep their spherical shape, and has a binding force. It is important not to overheat until the thermoplastic resin melts and becomes liquid. When the thermoplastic resin to be used is ultra high molecular weight polyethylene, the heating temperature is usually 130 to 200 ° C, preferably 140 to 180 ° C.
[0022]
In order to attach the sheet-like environmental purification material thus obtained to one side (back side) of the air-permeable cover sheet, the back surface of the cover sheet and one surface of the sheet-form environmental purification material are in contact with each other. It is only necessary to stack and heat and press between two end plates. The heating and pressing conditions vary depending on the thermoplastic resin used, but in the case of ultra high molecular weight polyethylene, it is 130 to 200 ° C. and 490 to 4900 KPa (5 to 50 kg / cm ² ) for 5 to 120 minutes, preferably The treatment is performed at 140 to 170 ° C. and 980 to 2940 KPa (10 to 30 kg / cm ² ) for 10 to 60 minutes.
[0023]
The thus obtained cover sheet with an environmental purification function is used as wallpaper (wall cloth) on the wall surface of a house or office, or as a cover sheet (or cloth) that decorates the surface of a partition or furniture. Available. To attach to the wall surface or partition, press the cover sheet with the front side facing up and the sheet-like environmental purification material facing the adherend side, using an electric iron or the like while heating to an appropriate temperature, for example, 80 to 150 ° C. That's fine. Therefore, it is not necessary to prepare an adhesive separately, and there is no occurrence of VOC based on the solvent of the adhesive.
[0024]
The present invention also provides a building material board in which at least one surface of the building material board is mounted with the above-described sheet for mounting with an environmental purification function.
Here, the building material board includes veneer plywood, particle board, chip board, wood board, gypsum board, and the like. In order to attach a cover sheet with an environmental purification function to a building material board, the above conditions, that is, 130 to 200 ° C., 490 to 4900 KPa (5 to 50 kg / cm ² ) for 5 to 120 minutes, preferably 140 to 170 ° C. What is necessary is just to process for 10 to 60 minutes at 980-2940 KPa (10-30 kg / cm < ² >). Also in this case, it is not necessary to prepare an adhesive separately, and there is no occurrence of VOC based on the solvent of the adhesive.
[0025]
【Example】
Reference example 1
Manganese dioxide (average particle size: 2.0 μm, specific surface area: 60 m ² / g), cupric oxide (average particle size: 1.9 μm, specific surface area: 60 m ² / g) and activated carbon (particle size: 96 55 g of mesh (150 μm pass) was mixed in a ball mill. To this was added 30 g of ultra high molecular weight polyethylene particles [(molecular weight by viscosity method: 2,000 K, particle size: 20 to 40 μm (average particle size: 30 μm)]] and further mixed, and 1 liter of water was added to the mixed particles. This was put into a 2 liter container, and 2 g of sodium acrylate polymer was further added, stirred and mixed, and this suspension was dipped in a glass nonwoven fabric having a thickness of 0.3 mm (30 g / m ² ). After applying and impregnating by the method, it was heated and dried to 165 ° C. to obtain a sheet-like environmental purification material.The amount of particles (manganese dioxide, cupric oxide, activated carbon and polyethylene particles) applied per unit weight of this sheet was It was 56% by weight.
[0026]
Next, the sheet-like environmental purification material and a breathable wall cloth (40 g / m ² decorative non-woven fabric manufactured by Aika Kogyo Co., Ltd.) are connected to the back surface of the breathable wall cloth and the sheet-like environmental purification material. They were stacked so that one surface was in contact with each other, squeezed between two end plates, and treated at a molding temperature of 150 ° C. and a pressure of 1960 KPa for 30 minutes to integrate them to obtain a sheet-like wall material (FIG. 1).
The integrated sheet-like wall material was cut into a size of 100 mm in length and 150 mm in width and placed in a 3 liter sealed container. Thereafter, 30 ppm of formaldehyde gas was charged into the container, and the formaldehyde gas measured 30 minutes later was 5 ppm or less. The concentration of formaldehyde gas was measured with a gas detector tube.
[0027]
Example 1
The sheet-like environmental purification material obtained in Reference Example 1 is cut into a size of 500 mm in length and 500 mm in width, and this is placed with the outer side facing outward (that is, with the environmental purification material inside), 500 mm in length, 500 mm in width, The sheet-like environmental purification material and the veneer plywood were integrated by stacking with a veneer plywood having a thickness of 10 mm, and then squeezed between two end plates and processed at a molding temperature of 130 ° C. and a pressure of 1960 KPa for 30 minutes (FIG. 2). . The integrated product was cut into a size of 100 mm in length and 150 mm in width, and this was placed in a 3 liter sealed container. Thereafter, 20 ppm of formaldehyde gas was put into this container, and when the formaldehyde gas was measured 30 minutes later, it was 5 ppm or less.
[0028]
Example 2
Chipboard (Tokyo Bond Co., Ltd., thickness: 9.0 mm) in place of plywood addition to the 145 ° C. The molding temperature used is carried out in the same manner as in Example 1, a sheet-like environment purification material and chipboard Integrated. The integrated product was cut into a size of 100 mm in length and 150 mm in width, and this was placed in a 3 liter sealed container. Thereafter, 10 ppm of formaldehyde gas was charged into the container, and the formaldehyde gas measured 30 minutes later was 5 ppm or less.
[0029]
【The invention's effect】
The cover sheet with an environmental purification function used in the present invention and the building material board according to claims 1 and 2 contain various environmental pollutants (hazardous substances) such as tobacco odor and mercaptan odor in addition to VOCs emitted from other building materials. Can be adsorbed and removed. In addition, since the cover sheet with an environmental purification function used in claims 1 and 2 can be thermally bonded to the wall surface using an iron or the like without using an organic solvent-containing adhesive, VOC is generated by the adhesive. There is no.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a cover sheet with an environmental purification function used in the present invention.
FIG. 2 is a cross-sectional view of a building material board that is mounted with a sheet for mounting with an environmental purification function of the present invention.

Claims (2)

A building material board that is mounted with an environmental purification function-equipped surface sheet in which a sheet-like environmental purification material is bonded to one side of a breathable surface sheet. A surface mounting sheet with an environmental purification function, in which a sheet-shaped environmental purification material is bonded to one side of a breathable surface mounting sheet, the sheet-shaped environmental purification material comprising: (a) metal and / or metal oxide Particles, (b) adsorbent particles, (c) thermoplastic resin particles, and (d) a fibrous base material of a breathable sheet, and metal and / or metal oxide particles (a) and adsorbent particles (b ) Is bonded to the surface of the thermoplastic resin particle (c), and the thermoplastic resin particle (c) is bonded at the contact portion between the particles, and the thermoplastic resin particle (c) is a fibrous base material ( d) A building material board that is coupled to d), and at least one side of the building material board is mounted with the sheet for mounting with an environmental purification function .

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