JP4138039B2 - NO ↓ 2 removal and allergy mask - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a NO ↓ 2 removal and allergy countermeasure mask that collects dust and allergens such as cedar pollen and house dust, and further removes nitrogen dioxide that increases the incidence of asthma and enhances the production of allergic antibodies. Is.
[0002]
[Prior art]
The relationship between allergies and air pollution has been attracting attention for a long time, and the Ministry of Health and Welfare is conducting measurements of air pollutants and investigating the incidence of allergies in various places. In particular, the relationship between NO ↓ 2 concentration in the atmosphere and health condition is attracting attention. The relationship between NO ↓ 2 concentration and asthma, rhinitis, pollen allergy, etc. There are reports that the prevalence of allergic predisposition is high. Regarding the relationship between NO ↓ 2 and hay fever, the correlation is becoming clear from studies using rats, and the production of specific IgE, an allergic antibody of hay fever, in the body is NO ↓ 2. There are reports that it increases with exposure. Dust collection filters and gas adsorption filters are being developed and put to practical use. In addition, NO ↓ 2 removal and allergy countermeasure masks for hay fever have been put to practical use in recent years. Filters or masks have not been developed as antiallergic measures that focus on the incentives such as attention, especially those who work outdoors on highways and main roads due to high concentrations of nitrogen oxides due to automobile exhaust Is always exposed to. In addition, there are masks with activated carbon etc. and a deodorizing function added. However, the amount is not effective due to insufficient amount, and when normal activated carbon is vented with NO ↓ 2, it is reduced by catalytic action on the surface. NO (nitrogen monoxide), which is ineffective against nitrogen oxides. There is also a mask that can remove nitrogen oxides, but the amount is insufficient.
[0003]
The removal agent that removes NO ↓ 2 includes polyamine as an active ingredient, adsorbent impregnated with polyamine on a carrier or adsorbent in the form of ion exchange resin, activated carbon with polyamine, alkali metal, alkaline earth metal And the like with a salt or oxide added thereto.
[0004]
[Problems to be solved by the invention]
With such a conventional pollen removal mask or a mask with a deodorizing function and a nitrogen oxide removing function, NO ↓ 2 cannot be removed with sufficient performance. Also, since people are exposed for a long time in high concentrations, such as those working outdoors on highways and main roads, NO ↓ 2 should be used to eliminate NO ↓ 2 and deal with allergies. There is a need for a mask that can simultaneously remove allergens with high performance.
[0005]
In addition, if a large amount of adsorbent is used in order to provide sufficient performance, there is a problem that pressure loss increases, and the fabric portion becomes thick or is not suitable as a mask. Further, there is a demand for a mask that has sufficient performance, has a low pressure loss, and has no problem in wearing feeling.
[0006]
In addition, the conventional method using two layers of the non-woven fabric part to remove allergen and NO ↓ 2 removal layer has a problem that the pressure loss becomes large and becomes unsuitable as a mask, and the pressure loss of the mask is reduced. Is required. Furthermore, there are conventional filters in which granular or powdery NO ↓ 2 remover is supported on a porous substrate such as polyurethane. However, when applying these filters, when they are used or placed, they are supported. There is a problem that the removing agent is easily detached from the base material, which is not suitable for a mask. Furthermore, when using normal granular or powdered activated carbon, there is a limit to the adsorption capacity. In order to improve the adsorption performance, the weight of the activated carbon must be increased, and the thickness of the NO ↓ 2 removal layer is There is a problem that the pressure loss increases. Moreover, when NO ↓ 2 removal agent is made to adhere directly to the nonwoven fabric for removing allergens, such as pollen, there exists a problem that dust collection performance falls. In the case of a normal activated carbon fiber filter, the fibers have a dense structure, there is a problem that the pressure loss is high, and only a small amount can be used for the mask, the pressure loss is low, and the adsorption capacity per unit volume is large. In addition, a filter having a collecting performance such as pollen is required.
[0007]
In addition, when chemicals are used as the NO ↓ 2 removal agent, there are cases in which the odor of chemicals may be felt depending on temperature conditions, and there is a problem with the feeling of wearing the mask, and a mask that does not smell is required.
[0008]
The present invention solves such conventional problems, and can simultaneously remove allergens such as cedar pollen and NO ↓ 2 that causes asthma and induces the development of allergy, and has sufficient performance. The object is to provide a low pressure loss NO ↓ 2 removal and allergy countermeasure mask even if a large amount of NO ↓ 2 removal agent is used.
[0009]
Another object of the present invention is to provide a NO ↓ 2 removal and allergy countermeasure mask that deodorizes the odor of the NO ↓ 2 remover and further deodorizes the odor of the inhaled air.
[0010]
[Means for Solving the Problems]
One means of the present invention for solving the above problem is to apply a NO ↓ 2 remover processed into a slurry into a nonwoven fabric constituting a mask so that the slurry NO ↓ 2 remover takes a coarse-dense structure in the nonwoven fabric. It is carried in multiple times .
[0011]
Another means is that a deodorizing filter is arranged in the mask.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 of the present invention is a NO ↓ 2 remover that adsorbs NO ↓ 2, which is said to cause asthma and increase production of allergic antibodies, on a nonwoven fabric that collects allergens such as cedar pollen. Is a mask in which slurry-like NO ↓ 2 remover is carried in a slurry form so as to have a dense structure in the nonwoven fabric, and the slurry-like NO ↓ 2 remover is carried in multiple times Since it has a dense structure, it removes allergens such as Japanese cedar pollen and has the effect of adsorbing NO ↓ 2, which causes asthma and enhances the production of allergic antibodies, with low pressure loss and high performance.
[0013]
The invention according to claim 2 has a deodorizing filter disposed behind the mask, and has the effect of removing the odor of the NO ↓ 2 removing agent using chemicals and the like, and further deodorizing the sucked air. .
[0014]
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0015]
(Embodiment 1)
FIG. 1 shows the NO ↓ 2 removal and allergy countermeasure mask according to the first embodiment. For example, as shown in the figure, the non-woven fabric 2 in which the slurry-like NO ↓ 2 remover 1 is dispersed and supported by a binder is covered with a thin non-woven fabric 3 with a small pressure loss so as not to directly touch the skin and the appearance. To do. There are various porous substrates, such as polyurethane foam, that support the slurry-like NO ↓ 2 removal agent. Among them, the substrate is particularly rough and has low dust collection performance. Particularly preferred are non-woven fabrics having a dense and dense structure and charged non-woven fabrics. As the material, various materials such as polyester, polypropylene, nylon, acrylic, and polyethylene are applied. In the above configuration, by loading a slurry-like NO ↓ 2 remover on a nonwoven fabric having a collection performance such as cedar pollen, the remover is dispersed in the nonwoven fabric, so that the asthma is highly efficient without increasing pressure loss. NO ↓ 2, which causes the cause of pollinosis, can be removed, and since it has a dense structure, allergens such as cedar pollen can be removed with high performance. The NO ↓ 2 removal agent includes an adsorbent in the form of an ion exchange resin (Japanese Patent Laid-Open No. 6-296824), a mixture of activated carbon and titanium dioxide, an adsorbent in which an alkali metal salt, a cement material and activated carbon are combined (special No. 58-5699), an adsorbent in which an amino compound having a primary amine or an amino compound having a secondary amine or an alkali metal or alkaline earth metal salt or hydroxide is attached to activated carbon (Japanese Patent Application Laid-Open No. Hei 7). No. -299326), and other supports such as activated carbon and alumina that have been subjected to an addition treatment for increasing the reactivity, as long as they can adsorb NO ↓ 2 and can be processed in a slurry state. As a supporting method, first, a base material such as a non-woven fabric serving as a base material is impregnated in a binder tank while feeding with a roller, and excess binder is squeezed with a roll. Next, a mixture of a small amount of binder dispersed in water and a mixture of NO ↓ 2 remover is poured between the base material and the roll while being impregnated into the base material by applying pressure with the roll and then dried. Let If the substrate is thick, this step is performed from both sides in order to uniformly impregnate the substrate. According to this method, since the amount of the binder directly covering the NO ↓ 2 removing agent is small, there is no problem that the surface of the removing agent is covered with the binder and the adsorption performance is deteriorated. In addition, the base material is impregnated in advance with the binder as well as in the slurry, so that the dispersibility in the base material is good, and since it is firmly supported on the base material, the removal agent is prevented from being detached from the base material. can do. Furthermore, since the slurry has a dense structure in the substrate, there is almost no decrease in the collection performance of pollen and the like due to the loading of the NO ↓ 2 remover. In particular, in order to develop a dense structure, it is better to carry a small amount in several batches. For example, when using an activated carbon base that has been subjected to surface treatment such as adhesion for adsorbing NO ↓ 2, the NO ↓ 2 removal agent is fine when preparing the NO ↓ 2 removal agent. There are a method in which powdered charcoal is subjected to an adhesion treatment and then mixed with a binder, and a method in which finely powdered coal, an additive and a binder are directly mixed and supported. There is no big difference in NO ↓ 2 adsorption performance with the former and the latter. In the latter case, for example, for an activated carbon compound with an amino compound having a primary amine or an amino compound having a secondary amine, or an alkali metal or alkaline earth metal salt or hydroxide, Since it is water-soluble and exhibits alkali, a water-dispersed binder is suitable, such as vinyl chloride and acrylic. The particle size of the removing agent is desirably smaller than 100 mesh, and in particular, about 200 to 300 mesh is most suitable in consideration of dispersibility and workability. In the above configuration, NO ↓ 2 can be removed with low pressure loss and high performance as compared with the conventional one, and allergens such as cedar pollen can be collected.
[0016]
( Reference form 1 )
In FIG. 2, as an example in which the NO ↓ 2 removing agent in Embodiment 1 is processed into a nonwoven fabric, a nonwoven fabric NO ↓ 2 removal filter 4 is applied to Reference Embodiment 1 . In the manufacturing method of the non-woven fabric NO ↓ 2 removal filter 4, the carbon fiber is first processed into a thin non-woven fabric having a thickness of about 2 mm, and the laminated product is steam-activated in order to have a fine pore structure. The specific surface area of the activated carbon fiber after activation can be adjusted to 700 to 2000 m ↑ 2 / g, but considering the cost, chemical adhesion, strength as a filter, and performance, the vicinity of 1000 to 1500 m ↑ 2 / g is most suitable. ing. Furthermore, in order to give NO ↓ 2 adsorption performance, the adsorbent (about 30 to 40% of the weight of the filter), which is an amount that is efficiently adsorbed by the activated carbon fiber in the activated carbon fiber and does not require waste water ( An amino compound having a primary amine or an amino compound having a secondary amine, or a salt or hydroxide of an alkali metal or alkaline earth metal) is sprayed and impregnated for surface treatment. Unlike felts and sheets made of conventional activated carbon fibers, it has a dense structure, and since the pressure loss is low, a thin non-woven fabric layer of about 2 mm can be stacked, so that high pollen collection performance can be obtained. In the above structure, the NO ↓ 2 removal layer itself has a non-woven fabric-like density structure, so it not only has a high NO ↓ 2 removal performance, but also has a high collection performance of pollen, etc., and a low pressure loss. The form is suitable for a mask.
[0017]
【The invention's effect】
As described above, according to the mask of the present invention, the nonwoven fabric carrying the slurry-like NO ↓ 2 remover in a plurality of times so that the slurry-like NO ↓ 2 remover takes a coarse-dense structure in the nonwoven fabric . The structure is developed , NO ↓ 2 can be removed with high performance with low pressure loss, and allergens such as Japanese cedar pollen can be collected, and NO ↓ 2 and allergens enter the body when breathing. A large practical effect is obtained that an NO ↓ 2 removal and allergy countermeasure mask can be provided.
[0018]
【The invention's effect】
As described above, according to the mask of the present invention, the slurry-like NO ↓ 2 remover has a high-density performance with low pressure loss by the nonwoven fabric supporting the slurry-like NO ↓ 2 remover so that it takes a dense structure in the nonwoven fabric. NO ↓ 2 can be removed, allergens such as cedar pollen can be collected, NO ↓ 2 when breathing, and allergens are prevented from entering the body. A great practical effect that a mask can be provided is obtained.
[0019]
Further, it is possible to provide a NO ↓ 2 removal and allergy countermeasure mask having not only high NO ↓ 2 removal performance but also high dust collection performance and low pressure loss, and a form more suitable for a mask.
[0020]
Also, to provide a NO ↓ 2 removal and allergy countermeasure mask that can deodorize NO ↓ 2 remover and removal layer odors and bad odors in the air with a deodorizing filter and suck clean and odorless air. Can do.
[Brief description of the drawings]
FIG. 1 is a perspective view of an NO ↓ 2 removal and allergy countermeasure mask according to Embodiment 1 of the present invention. FIG. 2 is a perspective view of an NO ↓ 2 removal and allergy countermeasure mask according to Reference Embodiment 1 of the present invention. 3. Perspective view of NO ↓ 2 removal and allergy countermeasure mask according to Embodiment 2 of the present invention [Explanation of Symbols]
1 Slurry NO ↓ 2 Remover 2 Non-woven fabric 5 Deodorizing filter

Claims (2)

A NO ↓ 2 removal and allergy countermeasure mask in which the NO ↓ 2 remover is dispersed and supported on the nonwoven fabric in a plurality of times so that the slurry NO ↓ 2 remover has a dense structure in the nonwoven fabric.    2. The NO ↓ 2 removal and allergy countermeasure mask according to claim 1, wherein a deodorizing filter is disposed after the NO ↓ 2 removal layer.

Images