JP2003153990A - Filter material for deodorization and moisture adjustment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter material for deodorization and moisture adjustment for creating a comfortable, safe and sanitary building space by the deodorization/ resolution and moisture adjustment of vaporized organic compounds or odor gas in the building space by applying the filter material to an air-conditioner or a fan. SOLUTION: The filter material consists of a deodorizing/moisture adjusting base material folded in bellows with appropriate width and length or formed in the wave shape, or formed of three-dimensional woven fabrics or knitted woven fabrics or knit fabrics, or consists of an appropriate number of layers of the deodorizing/moisture adjusting base material. The deodorizing/moisture adjusting base material comprises thread with a prescribed diameter, woven or knitted with a knot of 0.5 to 10 mm, and an adhesive layer with an appropriate adhesive is formed on the surface of the thread of the base material. Further, artificial zeolite powder is homogeneously dispersed and bonded at a rate of at least 20 g/m<2> in weight to the outer surface of the adhesive layer. The average particle diameter of the zeolite powder is 30 μm or lower, the specific surface area is at least 70 g/m<2> , the base substitution capacity (meq/100 g) is at least 160 mg, and the moisture absorption capacity is at least 50%.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention provides a safe, hygienic and comfortable building space by accommodating a heating / cooling device, an air blower, etc. in a building space with high airtightness to deodorize and control humidity in the building space. The present invention relates to a deodorant and humidity control filter material that can be created.

[0002]

2. Description of the Related Art In recent years, office buildings, store buildings, and residential buildings have significantly improved hermeticity in combination with architectural structures and interior materials such as building hardware and new building materials.
As a result, the interior space itself warms up throughout the year due to volatilization and retention of volatile organic compounds that are volatilized from the adhesives and paints used during construction, as well as the increase in airtightness. Due to the difference, dew condensation occurs, the reproduction of bacteria, especially mold, is increased, and the collection of sanitary pests such as mites is caused by these reproductions, and these carcasses become allergens, causing atopic dermatitis and asthma. In addition, food residues and sweat of consumers in the residential building,
Due to the fact that body fluids, falling skin pieces, etc. rot and degenerate to generate specific odors, and these odors are mixed and become strange odors that adhere to the interior materials in the building space and permeate to diffuse and stay as living odors. It has become clear that the causes of so-called sick house syndrome in which workers and consumers in the building space suffer mental or physical illness, and thereby improve comfort, safety and hygiene in the building space. The challenge has been raised as a social issue.

By the way, volatile organic compounds such as formaldehyde, which is regarded as the most dangerous of such sick house syndromes, cannot be excluded from interior materials and construction materials in the current construction work, and therefore, as a countermeasure in the current situation. Is the most suitable means for periodically forcibly exchanging the air in the building space with the outside air. However, forcible exchange of air in a large-volume building space requires the installation cost of expensive replacement equipment in order to release warm air in the building space in winter or cooled air in summer and to supply outside air. In addition, a huge amount of energy is used each time for reheating or recooling, which results in a huge maintenance cost. Therefore, at present, the air in the building space is simply circulated by the air conditioner, the air blower, etc., and therefore no contribution is made to the countermeasures against the sick house syndrome.

The present inventor paid attention to the commercialization of artificial zeolite for the purpose of recycling the waste sand of casting containing silicon oxide and aluminum oxide as main components by the fund of the governmental technology development in 1999, and volatilized organic compounds and odors. Extremely large specific surface area capable of positively adsorbing a huge amount of gas or heavy metals, and large base displacement capacity (meq / 100) capable of decomposing and erasing adsorbed compounds and gases while maintaining high base displacement.
g) and an artificial zeolite having a moisture absorption capacity of 50 to 70% or more and a moisture absorption / desorption property, that is, a humidity control property, has been successfully developed. Therefore, the inventors of the present invention have paid attention to the large specific surface area, base substitution property and humidity control property of such artificial zeolite, and as a result of intensive research, the present invention has been accomplished.

[0005]

That is, the present invention is comfortable, safe and hygienic by deodorizing, decomposing and eliminating volatile organic compounds and odorous gases in a building space by accommodating and ventilating them with an air conditioner and a blower. The purpose is to provide a deodorant and humidity control filter material that can create a dynamic building space.

[0006]

Means for Solving the Problems The technical means adopted by the present invention for solving the above-mentioned problems are such that a wire having a required wire diameter can be used to sufficiently ventilate the mesh. A woven or knitted fabric having a mesh of 0.5 to 10 mm is used as a base material, and the artificial zeolite powder is adhered to the outer surface of the filament forming the base material, so that appropriate adhesion is performed. In addition to forming an adhesive layer by dip coating or spray coating of the agent, the outer surface of this adhesive layer has a large contact area ratio with the air in which volatile organic compounds, odorous gases or humidity are diffused and mixed. Since they are brought into contact with each other, the average particle diameter is 30 μm or less at the maximum and a large amount of adsorption is achieved. Therefore, the specific surface area is 70 m ² / g or more, and the adsorbed volatile organic compounds and odorous gas are decomposed and eliminated. At the very least prevent deodorization and adsorption saturation In order to stop it, its base substitution capacity (meq / 100 g) is at least 160 mg or more,
Further, in order to control the humidity by absorbing excess moisture and releasing it during drying, the artificial zeolite powder having a moisture absorption capacity of 50% or more is used in a weight ratio of 20 g or more per 1 m ^{2 of the} base material. It is uniformly dispersed and adhered to form a deodorant and humidity controlled substrate.

The deodorizing and humidity-controlling base material is provided with a required width and a desired width in order to sufficiently adsorb, decompose and eliminate the moisture, and to absorb and desorb moisture by sufficiently contacting the organic volatilized compound, the odorous gas or the air containing moisture which is ventilated. It exists in a structure formed by folding it in a bellows shape or forming a corrugated shape with a length, more preferably, a base material is woven by a three-dimensional woven structure such as a woven weave, a pile weave, and a weave weave, or a Russell knit, By using a woven fabric or a knitted fabric with a three-dimensional knitting structure such as Milanese knitting, the contact frequency is increased to further promote adsorption decomposition decomposition and moisture absorption / release, or an appropriate number of deodorant humidity control base materials are laminated. In this configuration, a large amount of reliable adsorption / decomposition and elimination and moisture absorption / release are provided.

[0008]

The present invention has the above-mentioned structure and uses a wire having a required wire diameter and has a mesh size of 0.5.
Since a woven fabric or a knitted fabric woven to 10 mm is used as a base material, and an adhesive layer is formed by an appropriate adhesive on the outer surface of the filament forming the base material, the formation of the adhesive layer Since the mesh size of the base material is fixed, and the artificial zeolite powder having an average particle size of 30 μm or less is bonded to the outer surface of the adhesive layer, the mesh size is not narrowed during ventilation. There is no increase in negative pressure. The artificial zeolite powder adhered to the outer surface of the adhesive layer has an extremely small average particle size of 30 μm or less, and therefore has a very large contact surface area ratio related to adsorption and a specific surface area of 70 m ² / g or more. It has an extremely large number of micropores and the artificial zeolite powder is ² per 1 m ^{2 of the} base material.
The deodorizing and humidity-controlling base material is formed by adhering at a weight ratio of 0 g or more.

For this reason, the volatilized organic compounds and odorous gases mixed in the air ventilated through the deodorizing and humidity-controlled substrate are positively adsorbed, and the adsorbed volatilized organic compounds and odorous gases are largely replaced by bases. Since it is decomposed and erased by the property, it is deodorized and the adsorption amount is prevented from being saturated, and the adsorption property is maintained for a long time. Further, moisture that is mixed is positively absorbed and the moisture is retained in the structural gaps of the artificial zeolite powder, so that moisture is released with drying, which is a so-called humidity control action.

Since the deodorizing and humidity-controlling base material is formed by folding or corrugating in a bellows shape having a required width and length, it contains a volatile organic compound, odorous gas, or moisture that is ventilated. Good contact with air is achieved, and adsorption, decomposition elimination and moisture absorption / release are significantly enhanced. Furthermore, by using a woven or knitted fabric having a three-dimensional structure as the base material, or by laminating an appropriate number of deodorant and humidity control base materials, the volatile organic compounds and the air mixed with odorous gas or humidity are turbulent. Since the contact frequency is significantly increased, adsorption, decomposition and elimination, and moisture absorption / release are further enhanced.

[0011]

EXAMPLE An example of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a partial sketch of a base material 1 made of a woven fabric. The base material 1 has a filament 1A having a required wire diameter. make use of,
The mesh size 1B is at least 0.5 mm up to 10 mm
A woven or knitted fabric that is woven to a certain extent is used, and the material of the filament 1A has excellent adhesiveness and retains heat resistance, cold resistance, or water resistance. It is desired to have excellent workability, and specific examples thereof include polyamide-based and polyester-based synthetic fiber monofilaments.

The wire diameter of the filament 1A is specifically determined by the size of the mesh 1B to be woven or knitted, the size of the substrate 1 used, etc., but in the case of general use When the mesh 1B is about 0.5 mm, the wire diameter is preferably about 0.07 to 0.1 mm, and the mesh 1B is about 1 mm.
When the thickness is about 0 mm, it is desired that the thickness is about 1.0 to 2.0 mm. In addition, the mesh size 1B of the base material 1 is 0.5 to 3 because the sending amount and the blowing pressure are small when it is used as an accessory to the cooling and heating equipment and the blower used in the residential building space.
Although it can be used with a mesh size of about 0 mm, it is approximately 6 for a large air volume and air pressure blower in an office or store building.
It is desired that the mesh size is about 10 mm. Of course, the woven fabric and knitted fabric used for the base material 1 also include non-woven fabrics, and in the non-woven fabrics, the wire diameter of the single yarn is about 0.01 to 0.05 mm as a raw material due to the characteristics of the manufacturing method. The fineness of synthetic fiber multifilament is used.

Then, as shown in FIG. 2, an adhesive layer 2 made of an appropriate adhesive is formed on the outer surface of the filament 1A forming the substrate 1.
Thus, the artificial zeolite powder 3 is uniformly dispersed and adhered. There is no particular restriction on this adhesive, but naturally, since the filament 1A and the artificial zeolite powder 3 need to be firmly adhered to each other via the adhesive layer 2, the adhesiveness between the materials is mutually improved. The thing to be equipped is selected, and since the artificial zeolite powder 3 is an inorganic substance and is a porous substance having a large number of fine pores on the entire outer surface thereof, it maintains physical and chemical adhesiveness. Therefore, it is only necessary to use an adhesive having good adhesiveness with polyamide-based or polyester-based synthetic fibers.

What is important in forming the adhesive layer 2 is that the artificial zeolite powder 3 adhered to the outer surface of the adhesive layer 2 is
An extremely fine particle having an average particle size of 30 μm or less is used, and the outer surface of the artificial zeolite powder 3 is covered with the adhesive of the adhesive layer 2 or embedded deeply in the adhesive layer 2. If adhered, the adsorbability and hygroscopicity with respect to the volatile organic compounds, odorous gas, or humidity will be significantly reduced, making it impossible to achieve the desired deodorization and humidity control. In order to achieve this, the adhesive layer should be formed as thin as possible, so that at most 1/3 of the diameter of the artificial zeolite powder 3 to be adhered
The following are desired: In addition, examples of means for forming the adhesive layer 2 include a method of immersing the base material 1 in an adhesive agent tank and a method of spraying an adhesive agent.

Thus, the artificial zeolite powder 3 adhered to the outer surface of the adhesive layer 2 is contacted in order to actively adsorb and absorb volatile organic compounds, odorous gases or moisture diffused and mixed in the air to be ventilated. Since a material having a large surface area ratio is effective, an average particle diameter of 30 μm or less, preferably about 10 to 20 μm is preferable from the viewpoint of adhesion workability and handleability, and the building space is also used in a residential building. Its internal volume is extremely large, and in order to efficiently adsorb and absorb volatilized organic compounds, odorous gases, or moisture diffused and mixed in the air of this large internal volume, a so-called large specific surface area with a large adsorption capacity is required. But
On the other hand, when the adhesive layer 2 is adhered to the outer surface, a part of the outer surface of the artificial zeolite powder 3 is adhered to the adhesive layer 2 and blocked, so that the substantial specific surface area may be reduced by about 10 to 20%. Considering that, at least the specific surface area is 70 m ² / g
The above are selected.

Furthermore, as the artificial zeolite powder 3, even if it volatilizes organic compounds and odorous gases positively and efficiently due to its large contact surface area ratio and specific surface area, it can be found in activated carbon etc. simply by adsorbing them. In addition, it falls into adsorption saturation in a short period of time, and not only deodorant effect but also decomposition and elimination of volatile organic compounds, which is said to be the most dangerous causative agent of sick house syndrome, cannot be achieved at all. Therefore, in order to decompose and eliminate the adsorbed volatile organic compounds and odorous gases to eliminate adsorption saturation and ensure deodorization, the decomposition and elimination action due to its strong base substitution property is utilized. And its base substitution capacity (meq / 100 g) is at least 160 mg or more, preferably 200 to 240.
mg artificial zeolite powder 3 is preferred. Furthermore, even if the cations retained as artificial zeolite powder are Na, Ca
It can also be used with Mg or K.

On the other hand, since the building space with high airtightness is kept warm throughout the year, a temperature difference from the outside temperature is likely to occur, and this temperature difference frequently causes dew condensation, which causes bacteria and particularly mold. As hygiene pests such as mites gather as the bacteria and mold grow, and these dead bodies become allergens and cause the development of atopic dermatitis and asthma, which is an important cause of sick house syndrome. Has become. By the way, the breeding conditions of bacteria and mold are temperature, nutrient source, and water (humidity), and the breeding is most promoted under the condition that the humidity is about 60 to 80%. Therefore, it absorbs excess moisture in the building space and releases it when it is dry to suppress the growth of bacteria and mold and maintain the health of residents and workers by about 45 to 55%.
From the standpoint of exerting a humidity control action capable of holding a certain degree of humidity, the artificial zeolite powder 3 used has a moisture absorption capacity of at least 50% or more, preferably 60 to 70%.

The zeolite powder 3 thus selected is
Adsorbs and decomposes and eliminates volatile organic compounds and odorous gases that are diffused and mixed in the air in a large-volume building space, or absorbs and desorbs excessive moisture to make the building space comfortable, safe, and hygienic. Therefore, 1 for the base material 1
At least 20 g or more per m ^2, preferably 30 to 40
By uniformly dispersing and adhering g, the deodorant and humidity controlled substrate 4 as shown in FIG. 3 is formed.

The deodorizing and humidity-controlling base material 4 thus obtained is attached to an air conditioner, a blower or the like to adsorb and decompose and eliminate volatile organic compounds and odorous gas, or to absorb excessive moisture and release moisture during drying. From the standpoint of efficient and efficient control, the contact property with the air passing through the deodorant and humidity-controlling base material 4 is increased. Therefore, the deodorant and humidity-controlling base material 4 is used by folding it into a bellows shape 4A with a required width and length as shown in FIG. 4, or by forming it into a corrugated shape 4B as shown in FIG. In such a case, the apparent thickness 4C due to the bellows-like fold 4A or the corrugated 4B is determined by the kind of incidental air-conditioning equipment or blower, and the filter space 40. However, it is about 5 to 50 mm in the case of general cooling and heating equipment and blowers.

It is used for the substrate 1 as a means for turbulently ventilating volatile organic compounds, odorous gas or air containing moisture to enhance the contact property and further promote the humidity control by adsorption decomposition decomposition and moisture absorption and desorption. It is proposed to construct a woven fabric or knitted fabric with a three-dimensional woven structure or a three-dimensional knitted structure. Specific woven fabrics of the three-dimensional woven structure include weft double weave, warp double weave, and double weave. Pile woven fabrics such as weft velvet, warp velvet, etc., or dull woven fabrics such as sachet weave, gauze weave, and gauze weave are used. Even in the case of non-woven fabrics, the same effect can be expected with needles and felts.

When volatile organic compounds and odorous gases are generated or are expected to be generated at high concentrations in the building space,
As shown in FIG. 6, it is possible to use a laminate in which an appropriate number of deodorant / humidity-controlling base materials 4 which are folded in a bellows shape 4A or formed in a corrugated shape 4B with a required width and length are laminated. It is extremely suitable, and naturally, a negative pressure against ventilation is increased by stacking a large number of sheets, so that each deodorant and humidity control substrate 4 is
The mesh B is larger than the mesh 1B when one sheet is used.

The following will report the test results of adsorptive decomposability and humidity control in the present invention. The test was conducted under the same conditions as the actual building space, and the test space was the first floor of a reinforced concrete 4-story residential building. Volume of 6 mats 26.2m
^This was done using ³ spaces. In the adsorptive decomposability test, a blower with an air flow rate of 0.5 m ³ / min was installed in the center of the sealed test space, and formaldehyde gas, ammonia gas and isovaleric acid gas were diffused and filled to the required concentrations, The sample of the present invention was placed on the front surface of the blower, and the residual concentration was measured depending on the elapsed time to determine the adsorptive decomposability. The sample used for the test is a polyamide-based synthetic fiber monofilament 4
00d (wire diameter of approximately 0.2 mm) is meshed with plain weave design 2.
An acrylic resin adhesive was used to form an adhesive layer having an average thickness of 8 μm on a 5 mm woven base material, and an average particle size of 20 μm, a specific surface area of 90 m ² / g and a base substitution capacity ( Meq / 100 g) was 200 mg and an artificial zeolite powder having a moisture absorption capacity of 65% was added to 10 per m ^2.
g, 15 g, 20 g, and 25 g of the deodorizing and humidity-controlling base material uniformly dispersed and adhered with a basis weight of 5 g, the folding width of which is 5 mm, and the folding angle of which is 45 °. It is formed in a width of 50 cm and a height of 50 cm (substantial area 355 cm ² ), and a 10 g basis weight is sample 1, a 15 g basis weight is sample 2, 20
The unit weight of g is sample 3, the unit weight of 25 g is sample 4, and further sample 1
Samples 5 to 8 in which two sheets of No. 4 to No. 4 were laminated were used as controls, and those not using the present invention were used as controls.
The results are shown in Table 1.

[0023]

[Table 1]

In the humidity control test, the humidity is set to 95% by using the same test space as the adsorption decomposition test, the humidity decrease with time is measured, the hygroscopicity is judged, and the humidity in the test space is set to 35%. The humidity increase was measured with the passage of time, and the moisture release property was judged. The results are shown in Table 2.

[0025]

[Table 2]

[0026]

As described above, according to the present invention, a suitable adhesive is applied to the outer surface of a filament of a base material woven or knitted with a filament having a required diameter to have a mesh size of 0.5 to 10 mm. Since the adhesive layer is formed by the adhesive layer, the mesh of the base material woven or knitted is firmly fixed by the adhesive layer, and the artificial zeolite powder having an average particle size of 30 μm or less is uniformly formed on the outer surface. Since the particles are dispersed and adhered, the mesh size is not substantially narrowed and held, and even when air containing volatilized organic compounds, odorous gas or moisture is ventilated, it can be ventilated with a very small load. Since the artificial zeolite powder to be adhered has an average particle size of 30 μm or less, its contact surface area ratio is extremely large and the specific surface area related to adsorption or moisture absorption is at least 70 m ² / g or more, which is a huge number. Since it has pores, the volatile organic compounds, odorous gases, or moisture mixed in the ventilated air are absorbed and absorbed positively and efficiently. In addition, the artificial zeolite powder has a base substitution capacity (meq
/ 100 g) retains a strong base substitution property of at least 160 mg or more, so the adsorbed volatile organic compounds and odorous gases are easily decomposed and erased, and a high deodorizing effect is exerted, and dangerous chemicals such as formaldehyde and organic solvent gases are exhibited. Since the substance is decomposed and erased, a safe building space can be maintained, and since the moisture absorption capacity of the artificial zeolite powder rises to at least 50% or more, the humidity is maintained at about 45 to 55% throughout the year, and the dew condensation is prevented. Generation, bacteria, and mold growth are suppressed, and moisture that has been absorbed is retained in the crystalline structure of the artificial zeolite powder, and is released when it is dried, so stable humidity is maintained throughout the year, and excessive humidity during summer and Hygienic and comfortable building space is realized by preventing excessive humidity in winter. Furthermore, in the present invention, when used, the deodorant and humidity-controlled base material is used by being folded in a bellows shape or formed into a corrugated shape with a required width and length, or by being used in an appropriate number of laminated layers. Since the contact time during ventilation is long and turbulent, the contact frequency is further increased, so that volatilized organic compounds and odorous gases are effectively adsorbed, decomposed and eliminated, or moisture is absorbed and released to provide an excellent humidity control effect. It is a deodorant and humidity control filter with many features such as being exhibited.

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a base material.

FIG. 2 is an explanatory diagram of a formation state of an adhesive layer.

FIG. 3 is an explanatory diagram of a deodorant and humidity-controlled substrate.

FIG. 4 is an explanatory view of the present invention folded in a bellows shape.

FIG. 5 is an explanatory view of the present invention formed in a wave shape.

FIG. 6 is a diagram illustrating a stacked use mode of the present invention.

[Explanation of symbols]

1 base material 1A line 1B eyes 2 Adhesive layer 3 Artificial zeolite powder 4 Deodorant humidity control base material 4A folding 4B wave shape 4C Apparent thickness 40 filter space

Continued front page    (72) Inventor Kazunori Kageyama             3-17 Harayama, Saitama City, Saitama Prefecture 5             Ihome Urawa No. 107 F term (reference) 4C080 AA07 BB01 CC01 HH05 JJ06                       KK08 LL03 MM02

Claims (3)

[Claims] 1. An adhesive layer made of an appropriate adhesive is formed on the outer surface of a filament of a base material woven or knitted to have a mesh size of 0.5 to 10 mm by a filament having a required diameter. And the average particle size is 30μ on the outer surface of this adhesive layer.
m or less, the specific surface area is 70 m ² / g or more, and the base substitution capacity (meq / 100 g) is 160 mg or more,
Moreover, artificial zeolite powder with a moisture absorption capacity of 50% or more
A deodorant characterized by being formed by corrugating or forming a corrugated shape of a deodorizing and humidity-controlling base material uniformly dispersed and adhered at a weight ratio of 20 g or more per m ² with an appropriate width and length. And humidity control filter material. 2. The base material is woven or knitted with a three-dimensional knitting structure composed of a layered weave, a pile weave, and a weaving weave, or a three-dimensional knitting structure consisting of Russell knitting and Milanese knitting.
The deodorant and humidity control filter material according to claim 1. 3. The deodorizing and humidity controlling filter material according to claim 1, wherein an appropriate number of deodorizing and humidity controlling base materials are laminated.