JP2013158613A - Care odor removal filter - Google Patents
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本発明は、家庭用または業務用のエアコン、空気清浄機等のフィルターや、あるいは病院の病室などにおける室内のいやな臭いを取り除くフィルター等として使用し、特に寝たきりなどの高齢者の介護に伴い人から発生する体臭や排泄臭、すなわち硫化水素、メチルメルカプタン、ノネナール等の悪臭を効率的に吸着浄化するフィルターに関する。 The present invention is used as a filter for household or commercial air conditioners, air purifiers, etc., or as a filter for removing unpleasant odors in rooms in hospital hospital rooms, etc. The present invention relates to a filter that efficiently adsorbs and purifies body odors and excretion odors generated from water, that is, bad odors such as hydrogen sulfide, methyl mercaptan, and nonenal.
消臭フィルターは、様々な用途に利用されており、その消臭方法は大きく分類して活性炭やゼオライト等の吸着材を利用した吸着タイプと、オゾンや光触媒、金属フタロシアニン錯体等により悪臭物質を分解除去する触媒タイプ、あるいはこの吸着タイプと触媒タイプを併用した併用タイプに分けられる。このうち例えば、活性炭の優れた吸着作用を利用した技術がよく知られているが、これらは悪臭成分を吸着し、周辺の臭気濃度を短期的に低下させる働きには優れている。 Deodorizing filters are used in various applications. Deodorizing methods can be broadly classified into adsorption types that use adsorbents such as activated carbon and zeolite, and decomposition of malodorous substances using ozone, photocatalysts, metal phthalocyanine complexes, etc. It can be divided into a catalyst type to be removed or a combined type in which the adsorption type and the catalyst type are used in combination. Among these, for example, techniques using the excellent adsorption action of activated carbon are well known, but these are excellent in the function of adsorbing malodorous components and reducing the ambient odor concentration in the short term.
特許文献１は、病院や家庭での失禁を伴う病人の存在する環境において、消臭効果を発揮する消臭繊維を３０重量％以上含む布帛からなるシート状空気清浄機用フィルターを開示している。 Patent Document 1 discloses a sheet-like air purifier filter made of a fabric containing 30% by weight or more of deodorizing fibers exhibiting a deodorizing effect in an environment where there is a sick person with incontinence at a hospital or at home. .
特許文献２は、種々の臭気成分、特にアルデヒド系ガスや低級脂肪酸等に対して効果のある、ヒドロキシアミン化合物が坦持された固体より構成される消臭フィルターを開示している。 Patent Document 2 discloses a deodorizing filter composed of a solid carrying a hydroxyamine compound, which is effective against various odor components, particularly aldehyde gases and lower fatty acids.
なお、出願人は特許文献３を出願しており、特に体臭や汗臭、あるいはペット臭、すなわちイソ吉草酸、酪酸、酢酸等の有機酸臭に大きな消臭効果があって、しかも圧力損失が低く、耐久性能の優れた有機酸臭除去フィルターを開示している。 In addition, the applicant has applied for Patent Document 3, and particularly has a great deodorizing effect on body odor, sweat odor, or pet odor, that is, organic acid odor such as isovaleric acid, butyric acid, acetic acid, etc. and pressure loss. An organic acid odor removal filter having a low and excellent durability performance is disclosed.
上記技術は、消臭繊維を含む布帛からなるフィルターや固体にヒドロキシアミン化合物を坦持させたフィルターであって、アンモニア、硫化水素、メチルメルカプタン、トリメチルアミン等の悪臭に効果のある中和反応型のフィルターであるが、さらに優れたフィルターで、圧力損失が低く、耐久性に優れる介護臭除去フィルターが求められていた。 The above technology is a filter made of a fabric containing deodorant fibers or a filter in which a hydroxyamine compound is supported on a solid, and is a neutralization reaction type that is effective against bad odors such as ammonia, hydrogen sulfide, methyl mercaptan, and trimethylamine. Although it is a filter, there has been a need for a care odor removal filter that is a superior filter, has low pressure loss, and is excellent in durability.
本発明は、かかる技術的背景に鑑みてなされたものであって、特に寝たきりなどの高齢者の介護に伴い人から発生する体臭や排泄臭、すなわち硫化水素、メチルメルカプタン、ノネナール等の悪臭に大きな消臭効果があって、しかも圧力損失が低く、さらに耐久性に優れる介護臭除去フィルターを提供することを目的とする。 The present invention has been made in view of such a technical background, and is particularly large in body odor and excretion odor generated from a person accompanying elderly care such as bedridden, that is, bad odor such as hydrogen sulfide, methyl mercaptan, nonenal etc. An object of the present invention is to provide a care odor removal filter that has a deodorizing effect, has low pressure loss, and is excellent in durability.
［１］発泡剤によって発泡したバインダー樹脂を介して不織布に銅化合物を坦持した無機ケイ素化合物とヒドラジド化合物とを固着させ、ＪＩＳ Ｂ９９０８規格で測定した圧力損失が、フィルターの通過風速が１．０ｍ／秒の条件下で、フィルターの厚さ１ｃｍ当たり３〜３０Ｐａであることに特徴のある介護臭除去フィルター。 [1] An inorganic silicon compound carrying a copper compound and a hydrazide compound are fixed to a nonwoven fabric through a binder resin foamed with a foaming agent, and the pressure loss measured according to JIS B9908 standard is such that the passing air velocity of the filter is 1.0 m. A care odor removal filter characterized by a pressure of 3 to 30 Pa per 1 cm thickness of the filter under the conditions of / sec.
［２］前記不織布がケミカルボンド不織布であり、前記バインダー樹脂がアクリル系樹脂である請求項１に記載の介護臭除去フィルター。 [2] The care odor removal filter according to claim 1, wherein the nonwoven fabric is a chemical bond nonwoven fabric, and the binder resin is an acrylic resin.
［３］前記発泡剤がアルキルスルホン酸のアルカリ金属塩である請求項１または２に記載の介護臭除去フィルター。 [3] The care odor removal filter according to claim 1 or 2, wherein the foaming agent is an alkali metal salt of an alkyl sulfonic acid.
［４］前記不織布に銅化合物を坦持した無機ケイ素化合物を３０〜１２０ｇ／ｍ２、ヒドラジド化合物を５〜２０ｇ／ｍ２固着させた請求項１〜３のいずれか１項に記載の介護臭除去フィルター。 [4] The care odor according to any one of claims 1 to 3, wherein 30 to 120 g / m 2 of an inorganic silicon compound carrying a copper compound and 5 to 20 g / m 2 of a hydrazide compound are fixed to the nonwoven fabric. Removal filter.
［５］介護臭除去フィルターの厚さが１〜１０ｍｍである請求項１〜４のいずれか１項に記載の介護臭除去フィルター。 [5] The care odor removal filter according to any one of claims 1 to 4, wherein the care odor removal filter has a thickness of 1 to 10 mm.
［１］の発明では、不織布の通気性を生かしながら、発泡剤によって発泡したバインダー樹脂を介して不織布に銅化合物を坦持した無機ケイ素化合物とヒドラジド化合物とを固着させることができる。前記不織布に銅化合物を坦持した無機ケイ素化合物が固着されているので、硫化水素、メチルメルカプタン等の排泄臭を無機ケイ素化合物に坦持している銅化合物との化学反応によって消臭することができる。かつ、前記不織布にヒドラジド化合物が固着されているので、ノネナール等の加齢臭をヒドラジド化合物との化学反応によって消臭することができる。また、発泡剤によって発泡したバインダー樹脂を介して前記不織布に銅化合物を坦持した無機ケイ素化合物とヒドラジド化合物とを強力に固着させているので、消臭性能を持続することができる。さらに、ＪＩＳ Ｂ９９０８規格で測定した圧力損失が、フィルターの通過風速が１．０ｍ／秒の条件下で、フィルターの厚さ１ｃｍ当たり３〜３０Ｐａであるので例えば、病室などで寝たきりなどの高齢者の介護に伴い人から発生する体臭や排泄臭、すなわち硫化水素、メチルメルカプタン、ノネナール等の悪臭を素早く消臭することができる。 In the invention of [1], the inorganic silicon compound carrying the copper compound and the hydrazide compound can be fixed to the nonwoven fabric through the binder resin foamed by the foaming agent while taking advantage of the breathability of the nonwoven fabric. Since the inorganic silicon compound carrying the copper compound is fixed to the non-woven fabric, the excretion odor such as hydrogen sulfide and methyl mercaptan can be deodorized by a chemical reaction with the copper compound carrying the inorganic silicon compound. it can. Moreover, since the hydrazide compound is fixed to the nonwoven fabric, it is possible to deodorize the aging odor such as nonenal by a chemical reaction with the hydrazide compound. Moreover, since the inorganic silicon compound and the hydrazide compound which carry | supported the copper compound to the said nonwoven fabric are firmly fixed through the binder resin foamed with the foaming agent, deodorizing performance can be maintained. Furthermore, the pressure loss measured in accordance with JIS B9908 standard is 3 to 30 Pa per 1 cm thickness of the filter under the condition that the passing wind speed of the filter is 1.0 m / sec. It is possible to quickly deodorize body odors and excretion odors generated by humans with care, that is, malodors such as hydrogen sulfide, methyl mercaptan, and nonenal.
［２］の発明では、前記不織布がケミカルボンド不織布であるので、発泡剤によって発泡したバインダー樹脂を介して銅化合物を坦持した無機ケイ素化合物とヒドラジド化合物とを固着させても通気性の低下を抑制することができる。また、前記バインダー樹脂がアクリル系樹脂であるので、強固に固着することができ、消臭効果の耐久性に優れた介護臭除去フィルターを提供できる。 In the invention of [2], since the non-woven fabric is a chemical bond non-woven fabric, even if an inorganic silicon compound carrying a copper compound and a hydrazide compound are fixed via a binder resin foamed by a foaming agent, the air permeability is reduced. Can be suppressed. Moreover, since the binder resin is an acrylic resin, it can be firmly fixed, and a care odor removal filter having excellent deodorizing effect durability can be provided.
［３］の発明では、前記発泡剤がアルキルスルホン酸のアルカリ金属塩であるので、バインダー樹脂を均一に発泡することができ、しかも安定した発泡状態とすることができるので、前記不織布に銅化合物を十分均一に固着することができ、しかも通気性の低下を抑制することができる。 In the invention of [3], since the foaming agent is an alkali metal salt of an alkyl sulfonic acid, the binder resin can be uniformly foamed and a stable foamed state can be obtained. Can be sufficiently uniformly fixed, and a decrease in air permeability can be suppressed.
［４］の発明では、前記不織布に銅化合物を坦持した無機ケイ素化合物を３０〜１２０ｇ／ｍ２固着しているので、硫化水素、メチルメルカプタンの悪臭を十分消臭でき、前記不織布にヒドラジド化合物を５〜２０ｇ／ｍ２固着しているので、ノネナール等の加齢臭を十分消臭できる。 In the invention of [4], since the inorganic silicon compound carrying a copper compound is fixed to the nonwoven fabric in an amount of 30 to 120 g / m 2 , the bad odors of hydrogen sulfide and methyl mercaptan can be sufficiently eliminated, and the hydrazide compound is applied to the nonwoven fabric. Since 5 to 20 g / m 2 is fixed, it is possible to sufficiently deodorize aging odors such as Nonenal.
［５］の発明では、介護臭除去フィルターの厚さが１〜１０ｍｍであるので、消臭性能を確保しながらかさばらず省スペースであり、しかも圧力損失が抑制された介護臭除去フィルターを提供できる。 In the invention of [5], since the thickness of the care odor removal filter is 1 to 10 mm, it is possible to provide a care odor removal filter that is compact and space-saving while ensuring deodorization performance, and that suppresses pressure loss. .
本発明の介護臭除去フィルターは、特に寝たきりなどの高齢者の介護に伴い人から発生する体臭や排泄臭、すなわち硫化水素、メチルメルカプタン、ノネナール等の悪臭に大きな消臭効果があって、しかも圧力損失が低く、さらに耐久性に優れる介護臭除去フィルターである。 The care odor removal filter of the present invention has a great deodorizing effect on body odors and excretion odors generated by people accompanying care for elderly people such as bedridden persons, i.e., hydrogen sulfide, methyl mercaptan, nonenal etc. It is a care odor removal filter with low loss and excellent durability.
本発明の銅化合物としては、例えば銅（II）の硫酸塩、硝酸塩、ギ酸塩、シュウ酸塩などの銅化合物が挙げられるが、これら例示のものに特に限定されるものではない。これら銅化合物は、硫化水素、メチルメルカプタンの悪臭の分解に優れた効果を発揮する。 Examples of the copper compound of the present invention include copper compounds such as copper (II) sulfate, nitrate, formate, and oxalate, but are not particularly limited to these examples. These copper compounds exhibit an excellent effect in the decomposition of malodor of hydrogen sulfide and methyl mercaptan.
本発明の無機ケイ素化合物としては、例えば二酸化ケイ素、アルミノケイ酸、ゼオライトが挙げられる。そして、無機ケイ素化合物に銅化合物を坦持させるには、前記無機ケイ素化合物のアルカリ塩に銅化合物の分散液を混合すればよい。 Examples of the inorganic silicon compound of the present invention include silicon dioxide, aluminosilicate, and zeolite. And in order to make a copper compound carry on an inorganic silicon compound, what is necessary is just to mix the dispersion liquid of a copper compound with the alkali salt of the said inorganic silicon compound.
本発明のヒドラジド化合物としては、例えばアジピン酸ジヒドラジド、セバシン酸ジヒドラジド、ドデカン二酸ジヒドラジド、マレイン酸ジヒドラジドが挙げられる。 Examples of the hydrazide compound of the present invention include adipic acid dihydrazide, sebacic acid dihydrazide, dodecanedioic acid dihydrazide, and maleic acid dihydrazide.
本発明の介護臭除去フィルターの不織布は、特に限定されることなくどのようなものも使用でき、例えばケミカルボンド不織布、サーマルボンド不織布、ニードルパンチ不織布、ウォーターニードル不織布、スパンボンド不織布などが用いられ、不織布の素材は、特に限定されるものではなく、ポリエステル繊維、ポリアミド繊維、ポリプロピレン繊維、アクリル繊維等の合成繊維、あるいは、麻、綿、羊毛等の天然繊維等の繊維から構成されるが、圧力損失の観点からは、ケミカルボンド不織布が好ましく、不織布の素材は耐久性の点で合成繊維からなるのが好ましい。 Non-woven fabric of the care odor removal filter of the present invention can be used without any particular limitation, such as chemical bond nonwoven fabric, thermal bond nonwoven fabric, needle punch nonwoven fabric, water needle nonwoven fabric, spunbond nonwoven fabric, etc. The material of the nonwoven fabric is not particularly limited and is composed of synthetic fibers such as polyester fibers, polyamide fibers, polypropylene fibers, acrylic fibers, or fibers such as natural fibers such as hemp, cotton, wool, etc. From the viewpoint of loss, a chemical bond nonwoven fabric is preferable, and the material of the nonwoven fabric is preferably made of synthetic fibers in terms of durability.
前記不織布の厚さは、１〜１０ｍｍであるのが好ましい。１ｍｍ未満では、銅化合物を坦持した無機ケイ素化合物とヒドラジド化合物の固着量を確保するのが難しくなるので、十分な消臭性能が得られなくなる。１０ｍｍを超えると十分な空気の通過量を確保することが難しくなり、消臭性能の低下を招くおそれがあり、またコスト的にも好ましくない。 The nonwoven fabric preferably has a thickness of 1 to 10 mm. If the thickness is less than 1 mm, it is difficult to secure a fixed amount of the inorganic silicon compound carrying the copper compound and the hydrazide compound, so that sufficient deodorizing performance cannot be obtained. If it exceeds 10 mm, it is difficult to ensure a sufficient amount of air passing, which may cause a reduction in deodorizing performance, and is not preferable in terms of cost.
前記不織布の見掛け密度は０．０１〜０．１ｇ／ｃｍ３であるのが好ましい。０．０１ｇ／ｃｍ３未満では、銅化合物を坦持した無機ケイ素化合物とヒドラジド化合物の固着量を確保するのが難しくなるので、十分な消臭性能が得られなくなる。０．１ｇ／ｃｍ３を超えると十分な空気の通過量を確保することが難しくなり、消臭性能の低下を招くおそれがあり、好ましくない。 The apparent density of the nonwoven fabric is preferably 0.01 to 0.1 g / cm 3 . If it is less than 0.01 g / cm 3 , it becomes difficult to secure a fixed amount of the inorganic silicon compound carrying the copper compound and the hydrazide compound, so that sufficient deodorizing performance cannot be obtained. If it exceeds 0.1 g / cm 3 , it is difficult to ensure a sufficient amount of air passage, which may cause a decrease in deodorizing performance, which is not preferable.
前記不織布を構成する繊維の繊度は５〜５０ｄｔｅｘの範囲であるものを用いるのが好ましく、５ｄｔｅｘ未満では、通気性を確保し難く、消臭性能も低下することからも好ましくない。５０ｄｔｅｘを超えると、銅化合物の固着量を確保するのが難しくなるので、十分な消臭性能が得られなくなる。中でも、繊度は１０〜３０ｄｔｅｘの範囲とするのがより好ましい。 The fineness of the fibers constituting the nonwoven fabric is preferably in the range of 5 to 50 dtex, and if it is less than 5 dtex, it is difficult to ensure air permeability and the deodorizing performance is also deteriorated. If it exceeds 50 dtex, it will be difficult to ensure the amount of copper compound fixed, so that sufficient deodorizing performance cannot be obtained. Among these, the fineness is more preferably in the range of 10 to 30 dtex.
銅化合物を坦持した無機ケイ素化合物の不織布への固着量は３０〜１２０ｇ／ｍ２が好ましい。３０ｇ／ｍ２を下回ると消臭性能の低下を招き、１２０ｇ／ｍ２を越えると圧力損失の増加を招くおそれがあり、好ましくない。ヒドラジド化合物の不織布への固着量は５〜２０ｇ／ｍ２が好ましい。５ｇ／ｍ２を下回ると消臭性能の低下を招くおそれがあり、２０ｇ／ｍ２を越えても圧力損失を増加させるおそれがあり、好ましくない。 The adhesion amount of the inorganic silicon compound carrying the copper compound to the nonwoven fabric is preferably 30 to 120 g / m 2 . If it is less than 30 g / m 2 , the deodorizing performance is lowered, and if it exceeds 120 g / m 2 , there is a risk of an increase in pressure loss, which is not preferable. The amount of the hydrazide compound fixed to the nonwoven fabric is preferably 5 to 20 g / m 2 . If it is less than 5 g / m 2 , the deodorizing performance may be lowered, and if it exceeds 20 g / m 2 , the pressure loss may be increased, which is not preferable.
本発明で用いるバインダ−樹脂として、どのような樹脂でも使用することができる。例えば、アクリル樹脂、ウレタン樹脂、メタアクリル樹脂、シリコン樹脂、グリオキザ−ル樹脂、酢酸ビニル樹脂、塩化ビニリデン樹脂、ブタジエン樹脂、メラミン樹脂、エポキシ樹脂、アクリル−シリコン共重合体樹脂、エチレン−酢酸ビニル共重合体樹脂、イソブチレン無水マレイン酸共重合体樹脂、エチレン−スチレン−アクリレート−メタアクリレ−ト共重合体樹脂などが挙げられる。また、これらの樹脂を２種類以上混合してバインダ−樹脂としてもよい。中でも、アクリル樹脂がヒドラジド化合物と相性がよく好ましい。 Any resin can be used as the binder resin used in the present invention. For example, acrylic resin, urethane resin, methacrylic resin, silicone resin, glyoxal resin, vinyl acetate resin, vinylidene chloride resin, butadiene resin, melamine resin, epoxy resin, acrylic-silicone copolymer resin, ethylene-vinyl acetate copolymer Examples thereof include a polymer resin, an isobutylene maleic anhydride copolymer resin, and an ethylene-styrene-acrylate-methacrylate copolymer resin. Two or more of these resins may be mixed to form a binder resin. Of these, acrylic resins are preferred because of their good compatibility with hydrazide compounds.
本発明の発泡剤として、どのような発泡剤でも使用することができる。例えば、アルキルスルホン酸のアルカリ金属塩、アルキルフェノールエチレンオキシド付加物、アルキルスルホコハク酸のアルカリ金属塩などを挙げることができる。中でも、アルキルスルホン酸のアルカリ金属塩が好ましい。アルキルスルホン酸のアルカリ金属塩として、例えば、ラウリル硫酸ナトリウムを挙げることができる。 Any foaming agent can be used as the foaming agent of the present invention. For example, an alkali metal salt of alkyl sulfonic acid, an alkylphenol ethylene oxide adduct, an alkali metal salt of alkyl sulfosuccinic acid and the like can be mentioned. Of these, alkali metal salts of alkylsulfonic acid are preferable. Examples of the alkali metal salt of alkylsulfonic acid include sodium lauryl sulfate.
発泡剤によるバインダー樹脂の発泡倍率は４〜８倍にするのが好ましい。すなわち、発泡剤をバインダー樹脂に加えたのち、例えばミキサーによって、機械的に泡立てて嵩を大きくした状態で不織布に塗布するのであるが、その際の発泡倍率は４〜８倍に設定する。そうすると、バインダー樹脂が発泡されているから、少ないバインダー樹脂でありながら不織布に銅化合物を十分均一に固着することができ、しかも通気性の低下を抑制することができる。中でも、バインダー樹脂の発泡倍率は５〜７倍にするのがより好ましい。 The expansion ratio of the binder resin with the foaming agent is preferably 4 to 8 times. That is, after adding a foaming agent to binder resin, it applies to a nonwoven fabric in the state which made it foamed mechanically, for example with a mixer, and increased the volume, but the foaming ratio in that case is set to 4-8 times. As a result, since the binder resin is foamed, the copper compound can be sufficiently uniformly fixed to the nonwoven fabric while the amount of the binder resin is small, and a decrease in air permeability can be suppressed. Among these, the expansion ratio of the binder resin is more preferably 5 to 7 times.
発泡剤によって発泡したバインダー樹脂を介して不織布に銅化合物を坦持した無機ケイ素化合物とヒドラジド化合物とを固着させるには、例えば次のようにして固着させることができる。あらかじめ銅化合物を水に均一に分散させた銅化合物分散液を用意し、銅化合物分散液に無機ケイ素化合物を加え均一に分散させ反応させた後、吸引ろ過してから水洗・乾燥することで銅化合物を坦持した無機ケイ素化合物を得る。次に、銅化合物を坦持した無機ケイ素化合物とヒドラジド化合物とを水に加え均一に分散させた後、バインダー樹脂を加えた後に発泡剤を加え、例えばミキサーによって、機械的に泡立てて嵩を大きく発泡させた処理液を用意する。この処理液には、発泡させる前に分散剤などの各種添加剤を、各種特性向上のため配合してもよい。前記処理液を不織布に塗布する手段としては、特に限定されるものではないが、例えば浸漬法、コーティング法等が挙げられる。中でも、コーティング法が好ましい。 In order to fix the inorganic silicon compound carrying the copper compound and the hydrazide compound on the nonwoven fabric through the binder resin foamed by the foaming agent, for example, the fixing can be performed as follows. Prepare a copper compound dispersion liquid in which the copper compound is uniformly dispersed in water beforehand, add the inorganic silicon compound to the copper compound dispersion liquid, uniformly disperse and react, then suction filter, wash with water and dry. An inorganic silicon compound carrying the compound is obtained. Next, an inorganic silicon compound carrying a copper compound and a hydrazide compound are added to water and uniformly dispersed, and then a binder resin is added and then a blowing agent is added. Prepare a foamed treatment solution. Various additives such as a dispersant may be added to the treatment liquid to improve various characteristics before foaming. The means for applying the treatment liquid to the nonwoven fabric is not particularly limited, and examples thereof include a dipping method and a coating method. Of these, the coating method is preferable.
上記のように、処理液を塗布した後に乾燥させるが、乾燥手段としては、加熱処理する方法が乾燥効率から好ましい。加熱処理温度は、１００〜１８０℃とするのが好ましい。この温度での加熱処理によって、固着性をより高め、悪臭除去性能の持続耐久性を一層向上させることができる。 As described above, the treatment liquid is applied and then dried. As a drying means, a heat treatment method is preferable from the viewpoint of drying efficiency. The heat treatment temperature is preferably 100 to 180 ° C. By heat treatment at this temperature, it is possible to further improve the sticking property and further improve the durability of the malodor removal performance.
本発明の介護臭除去フィルターの圧力損失は、フィルターの厚さ１ｃｍ当たり３〜３０Ｐａである。３Ｐａ未満では、不織布に対する銅化合物を坦持した無機ケイ素化合物とヒドラジド化合物の固着量を確保するのが難しくなるので、十分な消臭性能が得られなくなる。３０Ｐａを超えると十分な空気の通過量を確保することが難しくなり、消臭性能の低下を招くおそれがある。 The pressure loss of the care odor removal filter of the present invention is 3 to 30 Pa per 1 cm thickness of the filter. If it is less than 3 Pa, it becomes difficult to secure the fixed amount of the inorganic silicon compound and the hydrazide compound carrying the copper compound on the nonwoven fabric, so that sufficient deodorizing performance cannot be obtained. If it exceeds 30 Pa, it will be difficult to ensure a sufficient amount of air passage, and the deodorizing performance may be reduced.
本発明の介護臭除去フィルターの厚さは、１〜１０ｍｍであるのが好ましい。１ｍｍ未満では、不織布に対する銅化合物を坦持した無機ケイ素化合物とヒドラジド化合物の固着量を確保するのが難しくなるので、十分な消臭性能が得られなくなる。１０ｍｍを超えると十分な空気の通過量を確保することが難しくなるおそれがあり、消臭性能の低下を招くおそれがあり、またコスト的にも好ましくない。 The thickness of the care odor removal filter of the present invention is preferably 1 to 10 mm. If it is less than 1 mm, it becomes difficult to ensure the amount of fixing of the inorganic silicon compound and hydrazide compound carrying the copper compound to the nonwoven fabric, so that sufficient deodorizing performance cannot be obtained. If it exceeds 10 mm, it may be difficult to ensure a sufficient amount of air passage, which may cause a reduction in deodorizing performance, and is not preferable in terms of cost.
次に、実施例により本発明を具体的に説明する。なお、実施例における各種ガス除去性能（初期性能試験、繰り返し耐久性能試験）、圧力損失試験の測定は次のように行った。 Next, the present invention will be described specifically by way of examples. The various gas removal performance (initial performance test, repeated durability performance test) and pressure loss test in the examples were measured as follows.
（初期性能試験）
介護臭除去フィルターから切り出した試験片（４５０×２５０ｍｍ）を毎分８０００リットルの通気を行なうファンをセットした空気清浄機のフィルターホルダーに固定し、内容量１ｍ３のアクリルボックス内に入れた後、ボックス内において濃度が１０ｐｐｍとなるように硫化水素とチルメルカプタンとノネナールを１：１：１の割合で混合したガスを注入し、３０分経過後にこの混合ガスの残存濃度を測定し、混合ガスの除去率（％）を算出し初期性能とした。除去率９０％以上であるものを「◎」、除去率が８０％以上９０％未満であるものを「○」、除去率が７０％以上８０％未満であるものを「△」、除去率が７０％未満であるものを「×」とし、「○」以上を合格とした。
(Initial performance test)
After the fan for performing the ventilation per minute 8000 l test piece cut from the care odor removing filter (450 × 250 mm) was fixed to the filter holder of the set air purifier was placed in an acrylic box having an inner volume of 1 m 3, A gas in which hydrogen sulfide, tilmercaptan, and nonenal were mixed at a ratio of 1: 1: 1 so as to have a concentration of 10 ppm in the box was injected, and after 30 minutes, the residual concentration of the mixed gas was measured. The removal rate (%) was calculated and used as the initial performance. “◎” if the removal rate is 90% or more, “◯” if the removal rate is 80% or more and less than 90%, “△” if the removal rate is 70% or more and less than 80%, What was less than 70% was set as “x”, and “○” or more was set as pass.
（繰り返し耐久性能試験）
上記性能試験を５回繰り返し行ったあと、そのまま空気清浄機を動かし３０分間経過してこの混合ガスの残存濃度を測定し、混合ガスの除去率（％）を算出し耐久性能とした。除去率６０％以上であるものを「◎」、除去率が５０％以上６０％未満であるものを「○」、除去率が４０％以上５０％未満であるものを「△」、除去率が４０％未満であるものを「×」とし、「○」以上を合格とした。
(Repeated durability test)
After the above performance test was repeated five times, the air cleaner was moved as it was, and after 30 minutes, the residual concentration of the mixed gas was measured, and the removal rate (%) of the mixed gas was calculated to be the durability performance. “◎” if the removal rate is 60% or more, “◯” if the removal rate is 50% or more and less than 60%, “△” if the removal rate is 40% or more and less than 50%, What was less than 40% was set to “x”, and “○” or more was set to pass.
（圧力損失試験）
ＪＩＳ Ｂ９９０８形式３に準拠し測定した。すなわち、介護臭除去フィルターを風洞のユニット固定部に保持し、送風機を作動させフィルター面風速が１．０ｍ／秒になるように調整した。次に静圧測定孔に接続されたマノメーターによって、フィルターの上流側と下流側の静圧を測定しフィルターの厚み１ｃｍ当たりの圧力損失を算出した。評価基準は、圧力損失３０Ｐａ以下が合格で「○」、３０Ｐａ超３５Ｐａ以下を「△」、３５Ｐａ超を「×」とした。
(Pressure loss test)
Measured according to JIS B9908 format 3. That is, the care odor removal filter was held in the unit fixing portion of the wind tunnel, and the air blower was operated to adjust the filter surface wind speed to 1.0 m / sec. Next, the pressure loss per 1 cm thickness of the filter was calculated by measuring the static pressure upstream and downstream of the filter with a manometer connected to the static pressure measurement hole. The evaluation criteria were “◯” when the pressure loss was 30 Pa or less, “Δ” when more than 30 Pa and 35 Pa or less, and “X” when more than 35 Pa.
次に、本発明の実施例について説明するが、本発明はこれらの実施例のものに特に限定されるものではない。なお、不織布、銅化合物を坦持した無機ケイ素化合物、ヒドラジド化合物及びバインダー樹脂の種類、不織布への固着量、発泡倍率、フィルターの厚さを表１に、各種ガス除去性能（初期、繰り返し耐久）及び圧力損失試験の結果を表２に示す。 Next, examples of the present invention will be described, but the present invention is not particularly limited to these examples. In addition, Table 1 shows the types of non-woven fabrics, inorganic silicon compounds carrying copper compounds, hydrazide compounds and binder resins, the amount fixed to the non-woven fabrics, the expansion ratio, and the filter thickness. Various gas removal performance (initial, repeated durability) The results of the pressure loss test are shown in Table 2.
＜実施例１＞
硫酸銅５水和物２０重量部を水１００質量部に加えた後、攪拌機により攪拌を行い、均一に分散させた硫酸銅分散液を用意した。続いて、該硫酸銅分散液にケイ酸ナトリウム５０重量部を加えた後、攪拌機により攪拌を行い、均一に分散させ２時間反応させた後、吸引ろ過してから水洗し、１２０℃×３０分乾燥することで硫酸銅を坦持した二酸化ケイ素を得た。次に、該硫酸銅を坦持した二酸化ケイ素６０質量部と、アジピン酸ジヒドラジド１０質量部とを水２００質量部に加えた後、攪拌機により攪拌を行い、均一に分散させた後、アクリル系バインダー樹脂（固形分６０％）２質量部を加えよく攪拌したのちに発泡剤としてラウリル硫酸ナトリウム０．２重量部を加え、ミキサーによって機械的に泡立てて嵩を大きくし６倍発泡させた処理液を得た。この処理液をケミカルボンド不織布（ポリエステル繊維、目付５０ｇ／ｍ２、厚み５ｍｍ）にドクターナイフを用いてコーティングし、１００℃×２０分乾燥して、厚さ５ｍｍの介護臭除去フィルターを得た。
<Example 1>
After 20 parts by weight of copper sulfate pentahydrate was added to 100 parts by weight of water, stirring was performed with a stirrer to prepare a uniformly dispersed copper sulfate dispersion. Subsequently, 50 parts by weight of sodium silicate was added to the copper sulfate dispersion, followed by stirring with a stirrer, uniformly dispersing, reacting for 2 hours, suction filtration, washing with water, and 120 ° C. × 30 minutes. By drying, silicon dioxide carrying copper sulfate was obtained. Next, after adding 60 parts by mass of silicon dioxide carrying the copper sulfate and 10 parts by mass of adipic acid dihydrazide to 200 parts by mass of water, the mixture is stirred and uniformly dispersed, and then an acrylic binder is used. After adding 2 parts by mass of resin (solid content 60%) and stirring well, 0.2 parts by weight of sodium lauryl sulfate was added as a foaming agent, and the processing liquid was foamed mechanically with a mixer to increase the bulk and foam 6 times. Obtained. The treatment liquid was coated on a chemical bond nonwoven fabric (polyester fiber, basis weight 50 g / m 2 , thickness 5 mm) using a doctor knife and dried at 100 ° C. for 20 minutes to obtain a care odor removal filter having a thickness of 5 mm.
＜実施例２＞
次に、実施例１において、ケミカルボンド不織布（ポリエステル繊維、目付２０ｇ／ｍ２、厚み２ｍｍ）を用いた以外は実施例１と同様にして、厚さ２ｍｍの介護臭除去フィルターを得た。
<Example 2>
Next, a care odor removal filter having a thickness of 2 mm was obtained in the same manner as in Example 1 except that a chemical bond nonwoven fabric (polyester fiber, basis weight 20 g / m 2 , thickness 2 mm) was used.
＜実施例３＞
次に、実施例１において、ケミカルボンド不織布（ポリエステル繊維、目付８０ｇ／ｍ２、厚み８ｍｍ）を用いた以外は実施例１と同様にして、厚さ８ｍｍの介護臭除去フィルターを得た。
<Example 3>
Next, a care odor removal filter having a thickness of 8 mm was obtained in the same manner as in Example 1 except that a chemical bond nonwoven fabric (polyester fiber, basis weight 80 g / m 2 , thickness 8 mm) was used.
＜実施例４＞
次に、実施例１において、スパンボンド不織布（ポリエステル繊維、目付５０ｇ／ｍ２、厚み５ｍｍ）を用いた以外は実施例１と同様にして、厚さ５ｍｍの介護臭除去フィルターを得た。
<Example 4>
Next, a care odor removal filter having a thickness of 5 mm was obtained in the same manner as in Example 1 except that a spunbonded nonwoven fabric (polyester fiber, basis weight 50 g / m 2 , thickness 5 mm) was used.
＜実施例５＞
次に、実施例１において、硫酸銅５水和物に代えて酢酸銅（II）１水和物を用いた以外は実施例１と同様にして、厚さ５ｍｍの介護臭除去フィルターを得た。
<Example 5>
Next, a care odor removal filter having a thickness of 5 mm was obtained in the same manner as in Example 1 except that copper acetate (II) monohydrate was used instead of copper sulfate pentahydrate. .
＜実施例６＞
次に、実施例１において、ウレタン系バインダー樹脂（固形分５０％）を用いた以外は実施例１と同様にして、厚さ５ｍｍの介護臭除去フィルターを得た。
<Example 6>
Next, a care odor removal filter having a thickness of 5 mm was obtained in the same manner as in Example 1 except that the urethane-based binder resin (solid content 50%) was used.
＜実施例７＞
次に、実施例１において、発泡倍率を４倍にし、ドクターナイフを用いてコーティングの付着量を調整した以外は実施例１と同様にして、厚さ５ｍｍの介護臭除去フィルターを得た。
<Example 7>
Next, a care odor removal filter having a thickness of 5 mm was obtained in the same manner as in Example 1, except that the expansion ratio was set to 4 in Example 1 and the amount of coating adhered was adjusted using a doctor knife.
＜実施例８＞
次に、実施例１において、発泡倍率を８倍にし、ドクターナイフを用いてコーティングの付着量を調整した以外は実施例１と同様にして、厚さ５ｍｍの介護臭除去フィルターを得た。
<Example 8>
Next, in Example 1, a care odor removal filter having a thickness of 5 mm was obtained in the same manner as in Example 1 except that the expansion ratio was 8 times and the amount of coating was adjusted using a doctor knife.
＜実施例９＞
次に、実施例１において、アジピン酸ジヒドラジドに代えてセバシン酸ジヒドラジド１０質量部を用いた以外は実施例１と同様にして、厚さ５ｍｍの介護臭除去フィルターを得た。
<Example 9>
Next, a care odor removal filter having a thickness of 5 mm was obtained in the same manner as in Example 1 except that 10 parts by mass of sebacic acid dihydrazide was used instead of adipic acid dihydrazide.
＜実施例１０＞
次に、実施例１において、ケミカルボンド不織布（ポリエステル繊維、目付１２０ｇ／ｍ２、厚み１２ｍｍ）を用いた以外は実施例１と同様にして、厚さ１２ｍｍのフィルターを得た。
<Example 10>
Next, a filter having a thickness of 12 mm was obtained in the same manner as in Example 1 except that a chemical bond nonwoven fabric (polyester fiber, basis weight 120 g / m 2 , thickness 12 mm) was used.
＜実施例１１＞
次に、実施例１において、ケミカルボンド不織布（ポリエステル繊維、目付６００ｇ／ｍ２、厚み６０ｍｍ）を用いた以外は実施例１と同様にして、厚さ６０ｍｍのフィルターを得た。
<Example 11>
Next, a filter having a thickness of 60 mm was obtained in the same manner as in Example 1 except that a chemical bond nonwoven fabric (polyester fiber, basis weight 600 g / m 2 , thickness 60 mm) was used.
＜比較例１＞
次に、実施例１において、硫酸銅５水和物を用いなかった以外は実施例１と同様にして、厚さ５ｍｍのフィルターを得た。
<Comparative Example 1>
Next, a filter having a thickness of 5 mm was obtained in the same manner as in Example 1 except that copper sulfate pentahydrate was not used.
＜比較例２＞
次に、実施例１において、発泡剤を用いず、すなわちバインダー樹脂を発泡させなかった以外は実施例１と同様にして、厚さ５ｍｍのフィルターを得た。
<Comparative example 2>
Next, a filter having a thickness of 5 mm was obtained in the same manner as in Example 1 except that the foaming agent was not used, that is, the binder resin was not foamed.
＜比較例３＞
次に、実施例１において、硫酸銅を坦持した二酸化ケイ素の代わりに硫酸銅５水和物を用いた以外は実施例１と同様にして、厚さ５ｍｍのフィルターを得た。
<Comparative Example 3>
Next, a filter having a thickness of 5 mm was obtained in the same manner as in Example 1, except that copper sulfate pentahydrate was used instead of silicon dioxide carrying copper sulfate.
＜比較例４＞
次に、実施例１において、ヒドラジド化合物を用いなかった以外は実施例１と同様にして、厚さ５ｍｍのフィルターを得た。
<Comparative example 4>
Next, a filter having a thickness of 5 mm was obtained in the same manner as in Example 1 except that the hydrazide compound was not used.
表２から明らかなように、本発明の介護臭除去フィルターは、硫化水素、メチルメルカプタン、ノネナール等の悪臭に優れた消臭効果を発揮するとともに、圧力損失が低く、耐久性に優れたフィルターである。 As is clear from Table 2, the care odor removal filter of the present invention exhibits a deodorizing effect excellent in bad odors such as hydrogen sulfide, methyl mercaptan, nonenal, etc., and has a low pressure loss and excellent durability. is there.
本発明の技術は、家庭用または業務用のエアコン、空気清浄機等のフィルターや、あるいは病院の病室などにおける室内のいやな臭いを取り除くフィルター等として使用し、特に寝たきりなどの高齢者の介護に伴い人から発生する体臭や排泄臭、すなわち硫化水素、メチルメルカプタン、ノネナール等を効率的に吸着浄化するフィルターとして広く利用される。 The technology of the present invention is used as a filter for household or commercial air conditioners, air purifiers, etc., or as a filter for removing unpleasant odors in hospital hospital rooms, etc., especially for elderly people who are bedridden etc. Accordingly, it is widely used as a filter for efficiently adsorbing and purifying body odor and excretion odor generated from humans, that is, hydrogen sulfide, methyl mercaptan, nonenal and the like.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015056486A1 (en) * | 2013-10-17 | 2015-04-23 | 東亞合成株式会社 | Deodorizing filter |
| WO2016158013A1 (en) * | 2015-03-31 | 2016-10-06 | 住江織物株式会社 | Deodorant composition, deodorant fabric, and fiber product |
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| KR20160071428A (en) * | 2013-10-17 | 2016-06-21 | 도아고세이가부시키가이샤 | Deodorizing filter |
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