JP2018123980A - Humidification filter medium and humidification filter - Google Patents

Humidification filter medium and humidification filter Download PDF

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JP2018123980A
JP2018123980A JP2017014480A JP2017014480A JP2018123980A JP 2018123980 A JP2018123980 A JP 2018123980A JP 2017014480 A JP2017014480 A JP 2017014480A JP 2017014480 A JP2017014480 A JP 2017014480A JP 2018123980 A JP2018123980 A JP 2018123980A
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filter medium
acrylic resin
humidified
humidification
humidification filter
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憲吾 山根
Kengo Yamane
憲吾 山根
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Mitsubishi Paper Mills Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a humidification filter medium capable of obtaining a sufficient humidification amount, in a humidification filter medium that is used for a humidifier using a vaporization system, and to provide a humidification filter molded by using the humidification filter medium.SOLUTION: In a humidification filter medium in which a nonwoven fabric is impregnated with an acrylic resin, the acrylic resin includes 10 to 50 mass% of an acrylic resin with a glass-transition temperature of 90°C or higher.SELECTED DRAWING: None

Description

本発明は、加湿濾材及びそれを用いた加湿フィルターに関するものである。   The present invention relates to a humidified filter medium and a humidified filter using the same.

加湿機の加湿方式としては、気化式、加熱式、超音波式等がある。気化式は、水を含ませた加湿フィルターにファンで送風して、加湿フィルター中の水分を気化させる方式である。加熱式は、ヒーターで水を加熱し、沸騰させて蒸気に変える方式である。超音波式は、超音波を当てることで微粒子となった水をファンで送り出す方式である。また、通常は気化方式であるが、湿度が低下した場合に他の方式を併用するハイブリッド方式も知られている。気化方式を使用した気化式加湿機やハイブリッド式加湿機では、加湿フィルターの下部を水に浸漬させ、加湿フィルター全体が湿潤した状態とし、この加湿フィルターに通風を行うことにより、加湿フィルターを通過した空気が加湿され、室内へ供給される。加湿フィルターとしては、不織布からなる加湿濾材を使用して成形してなるフィルターが知られている。   As the humidifying system of the humidifier, there are a vaporization type, a heating type, an ultrasonic type and the like. The vaporization type is a method in which moisture in the humidification filter is vaporized by blowing air to the humidification filter containing water. The heating method is a method in which water is heated with a heater and boiled to change into steam. The ultrasonic type is a system in which water that has become fine particles by applying ultrasonic waves is sent out by a fan. Further, although a vaporization method is usually used, a hybrid method is also known in which another method is used in combination when the humidity decreases. In vaporizing humidifiers and hybrid humidifiers that use the vaporization method, the lower part of the humidifying filter is immersed in water so that the entire humidifying filter is moistened, and the humidifying filter is ventilated to pass through the humidifying filter. Air is humidified and supplied to the room. As a humidifying filter, a filter formed by using a humidifying filter medium made of a nonwoven fabric is known.

このため、気化方式を使用した気化式加湿機やハイブリッド式加湿機では、加湿フィルターの加湿濾材自体に水を早期に吸い上げ、加湿フィルター全体を常に湿潤し続ける性能が求められる。これに対し、加湿濾材に親水性多孔質微粉末を含んだ加湿器用気化促進材(例えば、特許文献1)が開示されているが、親水性多孔質微粉末を添加することで加湿濾材自体の吸水性は改善されるものの、吸い上げ速度という点では改善されず、加湿濾材の吸い上げ速度が、気化速度より遅く、十分な加湿量を得ることができなかった。また、剛性向上用の形状保持材Bを、吸水・保水繊維材Aに、重ね合わせて形成する加湿フィルター(例えば、特許文献2)が開示されているが、剛度向上用の形状保持材とその貼り合わせが必要なことから、非常に不経済であった。   For this reason, the vaporizing humidifier and the hybrid humidifier using the vaporization method are required to have a performance of sucking water into the humidifying filter medium itself of the humidifying filter at an early stage and constantly moistening the entire humidifying filter. On the other hand, a vaporization accelerator for a humidifier (for example, Patent Document 1) containing a hydrophilic porous fine powder in a humidified filter medium has been disclosed, but by adding a hydrophilic porous fine powder, the humidified filter medium itself Although the water absorption was improved, it was not improved in terms of the suction speed, and the suction speed of the humidified filter medium was slower than the vaporization speed, so that a sufficient amount of humidification could not be obtained. Further, a humidifying filter (for example, Patent Document 2) in which a shape retaining material B for improving rigidity is formed on a water absorption / water retaining fiber material A is disclosed. It was very uneconomical because it required pasting.

特開平06−74500号公報JP 06-74500 A 特開2003−4266号公報JP 2003-4266 A

本発明の課題は、気化方式を使用した加湿機に用いられる加湿濾材において、従来技術の欠点を解消し、十分な加湿量が得られる、加湿性能に優れた加湿濾材と、該加湿濾材を使用して成形してなる加湿フィルターを提供することである。   The subject of the present invention is a humidified filter medium used in a humidifier using a vaporization method, which eliminates the drawbacks of the prior art and obtains a sufficient amount of humidification, and uses a humidified filter medium excellent in humidification performance and the humidified filter medium And providing a humidified filter formed by molding.

本発明は、不織布にアクリル樹脂を含有させた加湿濾材において、該アクリル樹脂中に、ガラス転移温度が90℃以上のアクリル樹脂が、10〜50質量%含まれることを特徴とする加湿濾材と、該加湿濾材を使用して成形してなる加湿フィルターに関するものである。   The present invention relates to a humidified filter medium comprising an acrylic resin in a nonwoven fabric, wherein the acrylic resin contains 10 to 50% by mass of an acrylic resin having a glass transition temperature of 90 ° C. or higher, The present invention relates to a humidifying filter formed by using the humidified filter medium.

本発明の加湿濾材は、気化方式を使用した加湿機に用いられる加湿濾材において、十分な加湿量が得られる特徴を有している。   The humidified filter medium of the present invention has a feature that a sufficient amount of humidification can be obtained in a humidified filter medium used in a humidifier using a vaporization method.

以下、本発明の加湿濾材について詳細に説明する。   Hereinafter, the humidified filter medium of the present invention will be described in detail.

本発明の加湿濾材は、不織布にアクリル樹脂を含有させた加湿濾材において、該アクリル樹脂中に、ガラス転移温度が90℃以上のアクリル樹脂が、10〜50質量%含まれることを特徴とする。   The humidified filter medium of the present invention is a humidified filter medium in which an acrylic resin is contained in a nonwoven fabric, and the acrylic resin contains 10 to 50% by mass of an acrylic resin having a glass transition temperature of 90 ° C. or higher.

本発明の加湿濾材の坪量は、40〜160g/mであることが好ましく、50〜140g/mであることがより好ましく、60〜130g/mであることが更に好ましい。坪量が40g/m未満の場合、十分な剛直性を発現させることができず、水に浸漬させたとき、加湿フィルターが変形する場合がある。坪量が160g/mより大きい場合、加湿濾材を構成する繊維本数が増えたり、接着剤の添加量が増えたりして、繊維間の空隙が少なくなり、加湿量が悪くなる場合がある。 The basis weight of the humidification filter medium of the present invention is preferably 40~160g / m 2, more preferably from 50~140g / m 2, and still more preferably from 60~130g / m 2. When the basis weight is less than 40 g / m 2 , sufficient rigidity cannot be exhibited, and the humidifying filter may be deformed when immersed in water. If the basis weight is larger than 160 g / m 2 , the number of fibers constituting the humidified filter medium increases or the amount of adhesive added increases, resulting in a decrease in voids between the fibers and a decrease in the humidification amount.

本発明の加湿濾材におけるアクリル樹脂について説明する。アクリル樹脂は、アクリル酸系モノマー化合物を単独重合又は共重合して得られる樹脂である。単独重合体としてのガラス転移温度の高いモノマー化合物又はガラス転移温度の低いモノマー化合物を共重合することで、ガラス転移温度を自由に調整することができる。本発明において、アクリル酸系モノマー化合物とは、アクリル酸、メタクリル酸、アクリル酸塩、メタクリル酸塩、アクリル酸エステル及びメタクリル酸エステルからなる群からから選ばれるモノマー化合物であり、アクリルアミドやメタクリルアミドも含まれる。アクリル酸エステル及びメタクリル酸エステルの場合では、炭素数1以上5以下の短鎖脂肪族系のエステルが好ましい。本発明におけるアクリル樹脂の具体例としては、ジャパンコーティングレジン製のリカボンド(登録商標)シリーズ、日本合成化学工業製のモビニール(登録商標)シリーズ、三井化学製ボンロン(登録商標)シリーズ、サイデン化学製のサイビノール(登録商標)シリーズ、DIC製のボンコート(登録商標)シリーズ等が挙げられる。   The acrylic resin in the humidified filter medium of the present invention will be described. The acrylic resin is a resin obtained by homopolymerizing or copolymerizing an acrylic acid monomer compound. By copolymerizing a monomer compound having a high glass transition temperature or a monomer compound having a low glass transition temperature as a homopolymer, the glass transition temperature can be freely adjusted. In the present invention, the acrylic acid monomer compound is a monomer compound selected from the group consisting of acrylic acid, methacrylic acid, acrylate, methacrylate, acrylate and methacrylate, and acrylamide and methacrylamide are also included. included. In the case of acrylic esters and methacrylic esters, short chain aliphatic esters having 1 to 5 carbon atoms are preferred. Specific examples of the acrylic resin in the present invention include Rikabond (registered trademark) series manufactured by Japan Coating Resin, Movinyl (registered trademark) series manufactured by Nippon Synthetic Chemical Industry, Bonron (registered trademark) series manufactured by Mitsui Chemicals, and Seiden Chemical Examples include the Cybinol (registered trademark) series and the DIC's Boncoat (registered trademark) series.

本発明の加湿濾材は、不織布にアクリル樹脂を含有させてなり、アクリル樹脂中にガラス転移温度が90℃以上のアクリル樹脂が、10〜50質量%含まれることを特徴とする。ガラス転移温度が90℃以上のアクリル樹脂が10質量%より少ない場合、水を効果的に吸い上げる指標である吸い上げ性能が不足し、従って、十分な加湿量が得られない。50質量%より多い場合は、アクリル樹脂が加湿濾材から剥がれる現象である粉落ちが発生する。ガラス転移温度が90℃以上のアクリル樹脂を含有することで、吸い上げ性能が向上する理由としては、明らかにされた訳ではないが、ガラス転移温度が高いアクリル樹脂を含有させることで、アクリル樹脂からなる膜にミクロな亀裂が生じ、その部分が毛細管となり、水を早く吸い上げる効果を生み出しているものと想像している。アクリル樹脂中にガラス転移点が90℃以上のアクリル樹脂は、30〜50質量%含まれることがより好ましい。また、ガラス転移温度が90℃以上のアクリル樹脂のガラス転移温度は、90〜120℃であることがより好ましい。   The humidified filter medium of the present invention is characterized in that an acrylic resin is contained in a nonwoven fabric, and the acrylic resin contains 10 to 50% by mass of an acrylic resin having a glass transition temperature of 90 ° C. or higher. When the acrylic resin having a glass transition temperature of 90 ° C. or higher is less than 10% by mass, the sucking performance, which is an index for effectively sucking water, is insufficient, and therefore a sufficient amount of humidification cannot be obtained. When the amount is more than 50% by mass, powder falling, which is a phenomenon in which the acrylic resin is peeled off from the humidified filter medium, occurs. The reason why the wicking performance is improved by containing an acrylic resin having a glass transition temperature of 90 ° C. or higher is not clarified, but by containing an acrylic resin having a high glass transition temperature, I imagine that a micro-crack occurs in the resulting film, and that part becomes a capillary, creating the effect of sucking up water quickly. The acrylic resin having a glass transition point of 90 ° C. or higher in the acrylic resin is more preferably contained in an amount of 30 to 50% by mass. The glass transition temperature of the acrylic resin having a glass transition temperature of 90 ° C. or higher is more preferably 90 to 120 ° C.

アクリル樹脂のガラス転移温度(Tg)の設定は、下記のFox式に従い、各アクリル樹脂の単量体の質量比率を設定することにより行なうことができる。   The glass transition temperature (Tg) of the acrylic resin can be set by setting the mass ratio of each acrylic resin monomer according to the following Fox equation.

<Fox式>
1/Tg=(W1/Tg1)+(W2/Tg2)+…+(Wm/Tgm)
W1+W2+…+Wm=1
<Fox formula>
1 / Tg = (W1 / Tg1) + (W2 / Tg2) + ... + (Wm / Tgm)
W1 + W2 + ... + Wm = 1

式中、Tgはアクリル樹脂のガラス転移温度を表す。Tg1、Tg2、…、Tgmは各単量体の単重合体のガラス転移温度を表す。また、W1、W2、…、Wmは各単量体の質量比率を表す。前記Fox式における各単量体のガラス転移温度は、例えば、Polymer Handbook Third Edition(Wiley−Interscience、1989)記載の値を用いればよい。 In the formula, Tg represents the glass transition temperature of the acrylic resin. Tg1, Tg2,..., Tgm represent the glass transition temperature of each monomer homopolymer. W1, W2,..., Wm represent the mass ratio of each monomer. As the glass transition temperature of each monomer in the Fox formula, for example, a value described in Polymer Handbook Third Edition (Wiley-Interscience, 1989) may be used.

本発明の加湿濾材におけるアクリル樹脂の乾燥含有量は、不織布基材に対し、10〜50g/mであることが好ましく、20〜40g/mであることがより好ましい。10g/mより少ないと、十分な吸い上げ性能が得られない場合があり、50g/mより多いと、十分な吸い上げ性能は得られるものの、頭打ちになることと、加湿濾材の剛性が高くなり、フィルター素子に組み立てるまでの後加工が難しくなる。 Dry content of the acrylic resin in the humidifying filter medium of the present invention, with respect to the nonwoven fabric substrate is preferably from 10 to 50 g / m 2, and more preferably 20 to 40 g / m 2. If it is less than 10 g / m 2 , sufficient suction performance may not be obtained. If it is more than 50 g / m 2 , sufficient suction performance will be obtained, but it will reach a peak and the humidified filter medium will have high rigidity. Post-processing is difficult until the filter element is assembled.

不織布基材にアクリル樹脂を含有させる方法としては、該成分を不織布基材にできるだけ均一に含有させることができる方法であれば特に制限はない。アクリル樹脂を含む溶液又は分散液を、塗工、含浸又はスプレー等の方法によって不織布基材に付与し、溶媒や分散媒を乾燥等の方法で除去し、該アクリル樹脂を不織布基材に含有させる方法が例示される。   The method for allowing the nonwoven fabric substrate to contain the acrylic resin is not particularly limited as long as the component can be contained in the nonwoven fabric substrate as uniformly as possible. A solution or dispersion containing an acrylic resin is applied to the nonwoven fabric substrate by a method such as coating, impregnation or spraying, the solvent or dispersion medium is removed by a method such as drying, and the acrylic resin is contained in the nonwoven fabric substrate. A method is illustrated.

本発明で使用される不織布基材としては、特に制限はないが、スパンボンド法、メルトブロー法、乾式法(サーマルボンド法、レジンボンド法、ニードルパンチ法、スパンレース法、ステッチボンド法)、湿式法、静電紡糸法等の方法から少なくとも一つの方法を選択して製造された不織布を用いることができる。必要に応じて、これらの複数の方法を組み合わせて製造された不織布を用いることができる。   The nonwoven fabric substrate used in the present invention is not particularly limited, but a spunbond method, a melt blow method, a dry method (thermal bond method, resin bond method, needle punch method, spunlace method, stitch bond method), wet method A nonwoven fabric produced by selecting at least one method from the methods such as the method and the electrospinning method can be used. If necessary, a nonwoven fabric produced by combining these plural methods can be used.

本発明で使用される不織布基材の材料としては、ポリアミド系繊維、ポリエステル系繊維、ポリアルキレンパラオキシベンゾエート系繊維、ポリウレタン系繊維、ポリビニルアルコール系繊維、ポリ塩化ビニリデン系繊維、ポリ塩化ビニル系繊維、ポリアクリロニトリル系繊維、ポリオレフィン系繊維、フェノール系繊維等の合成繊維、ガラス繊維、金属繊維、アルミナ繊維、炭素繊維、活性炭素繊維等の無機繊維、木材パルプ、竹パルプ、麻パルプ、ケナフパルプ、藁パルプ、バガスパルプ、コットンリンターパルプ、木綿、羊毛、絹等の天然繊維、古紙再生パルプ、レーヨン等の再生セルロース繊維やコラーゲン等のタンパク質、アルギン酸、キチン、キトサン、澱粉等の多糖類等を原料とした再生繊維等、あるいは、これらの繊維に親水性や難燃性等の機能を付与した繊維等を単独又は組み合わせて使用することができる。   Nonwoven fabric base materials used in the present invention include polyamide fibers, polyester fibers, polyalkylene paraoxybenzoate fibers, polyurethane fibers, polyvinyl alcohol fibers, polyvinylidene chloride fibers, polyvinyl chloride fibers, Synthetic fibers such as polyacrylonitrile fiber, polyolefin fiber and phenol fiber, glass fiber, metal fiber, alumina fiber, carbon fiber, activated carbon fiber and other inorganic fiber, wood pulp, bamboo pulp, hemp pulp, kenaf pulp, straw pulp Recycled from natural fibers such as bagasse pulp, cotton linter pulp, cotton, wool, silk, etc., recycled cellulose fibers such as recycled paper, rayon, etc., proteins such as collagen, alginic acid, chitin, chitosan, starch and other polysaccharides Fibers, etc., or parents to these fibers Fibers imparted with functions such as resistance and flame retardance and the like can be used alone or in combination.

本発明の加湿フィルターは、本発明の加湿濾材を成形してなる。形状としては、例えば立体形状のものがあり、コルゲート状、プリーツ状などが例示される。   The humidifying filter of the present invention is formed by molding the humidified filter medium of the present invention. Examples of the shape include a three-dimensional shape, and examples thereof include a corrugated shape and a pleated shape.

以下に実施例を挙げて本発明を更に具体的に説明するが、本発明は、実施例に限定されるものでない。なお、実施例中の「%」及び「部」は特に断りのない限り、それぞれ「質量%」及び「質量部」を表す。   The present invention will be described more specifically with reference to the following examples. However, the present invention is not limited to the examples. In the examples, “%” and “part” represent “% by mass” and “part by mass”, respectively, unless otherwise specified.

(実施例1)
アクリル樹脂であるリカボンド(登録商標)FK−68(ジャパンコーティングレジン製:ガラス転移温度(Tg)24℃)とリカボンド(登録商標)ES−90(ジャパンコーティングレジン製:ガラス転移温度108℃)を乾燥質量比90:10の割合で混合し、アクリル樹脂の分散液を得た。次に、坪量90g/mのポリエチレンテレフタレート(PET):レーヨン=50:50(乾燥質量比)のスパンレース不織布を不織布基材として、アクリル樹脂の乾燥含有量が30g/mとなるように、該分散液を含浸加工した。含浸後、内部温度150℃の熱風乾燥機中で10分間乾燥させ、加湿濾材を得た。
Example 1
Ricabond (registered trademark) FK-68 (manufactured by Japan Coating Resin: glass transition temperature (Tg) 24 ° C.) and Ricabond (registered trademark) ES-90 (manufactured by Japan Coating Resin: glass transition temperature 108 ° C.), which are acrylic resins, are dried. Mixing at a mass ratio of 90:10, an acrylic resin dispersion was obtained. Next, using a spunlace nonwoven fabric of polyethylene terephthalate (PET): rayon = 50: 50 (dry mass ratio) having a basis weight of 90 g / m 2 as a nonwoven fabric base material, the dry content of the acrylic resin is 30 g / m 2. Then, the dispersion was impregnated. After impregnation, it was dried for 10 minutes in a hot air dryer with an internal temperature of 150 ° C. to obtain a humidified filter medium.

(実施例2)
リカボンド(登録商標)FK−68とリカボンド(登録商標)ES−90を乾燥質量比70:30の割合で混合する以外は、実施例1と同様の方法で、加湿濾材を得た。
(Example 2)
A humidified filter medium was obtained in the same manner as in Example 1 except that Ricabond (registered trademark) FK-68 and Ricabond (registered trademark) ES-90 were mixed at a dry mass ratio of 70:30.

(実施例3)
リカボンド(登録商標)FK−68とリカボンド(登録商標)ES−90を乾燥質量比50:50の割合で混合する以外は、実施例1と同様の方法で、加湿濾材を得た。
(Example 3)
A humidified filter medium was obtained in the same manner as in Example 1 except that Ricabond (registered trademark) FK-68 and Ricabond (registered trademark) ES-90 were mixed at a dry mass ratio of 50:50.

(比較例1)
リカボンド(登録商標)FK−68とリカボンド(登録商標)ES−90を乾燥質量比95:5の割合で混合する以外は、実施例1と同様の方法で、加湿濾材を得た。
(Comparative Example 1)
A humidified filter medium was obtained in the same manner as in Example 1 except that Ricabond (registered trademark) FK-68 and Ricabond (registered trademark) ES-90 were mixed at a dry mass ratio of 95: 5.

(比較例2)
リカボンド(登録商標)FK−68とリカボンド(登録商標)ES−90を乾燥質量比45:55の割合で混合する以外は、実施例1と同様の方法で、加湿濾材を得た。
(Comparative Example 2)
A humidified filter medium was obtained in the same manner as in Example 1 except that Ricabond (registered trademark) FK-68 and Ricabond (registered trademark) ES-90 were mixed at a dry mass ratio of 45:55.

(比較例3)
リカボンド(登録商標)FK−68とアクリル樹脂であるJE−1056(星光PMC製:ガラス転移温度82℃)を乾燥質量比90:10の割合で混合する以外は、実施例1と同様の方法で、加湿濾材を得た。
(Comparative Example 3)
Ricabond (registered trademark) FK-68 and acrylic resin JE-1056 (manufactured by Starlight PMC: glass transition temperature 82 ° C.) were mixed in a ratio of 90:10 by dry mass ratio in the same manner as in Example 1. A humidified filter medium was obtained.

(比較例4)
リカボンド(登録商標)FK−68とJE−1056を乾燥質量比70:30の割合で混合する以外は、実施例1と同様の方法で、加湿濾材を得た。
(Comparative Example 4)
A humidified filter medium was obtained in the same manner as in Example 1 except that Rikabond (registered trademark) FK-68 and JE-1056 were mixed at a dry mass ratio of 70:30.

(比較例5)
リカボンド(登録商標)FK−68とJE−1056を乾燥質量比50:50の割合で混合する以外は、実施例1と同様の方法で、加湿濾材を得た。
(Comparative Example 5)
A humidified filter medium was obtained in the same manner as in Example 1 except that Ricabond (registered trademark) FK-68 and JE-1056 were mixed at a dry mass ratio of 50:50.

実施例1〜3及び比較例1〜5の加湿濾材について、以下に示す方法により評価を行い、評価結果を表1に示した。   The humidified filter media of Examples 1 to 3 and Comparative Examples 1 to 5 were evaluated by the following method, and the evaluation results are shown in Table 1.

[加湿量の評価方法]
加湿量の評価としては、濾材が効率よく水を吸い上げる性能に依存することから、水の吸い上げ性能としての評価を行った。吸い上げ性能は、JIS L 1907のバイレック法に準じて測定した。評価基準としては、以下の通りである。
◎:吸い上げ性能がかなり高い。
○:吸い上げ性能が高い。
△:吸い上げ性能がやや低いが、実用可能である。
×:吸い上げ性能が低く、実用上問題である。
[Method of evaluating the amount of humidification]
As the evaluation of the amount of humidification, since the filter medium depends on the performance of efficiently sucking up water, it was evaluated as the performance of sucking up water. The siphoning performance was measured in accordance with the birec method of JIS L 1907. The evaluation criteria are as follows.
A: The sucking performance is considerably high.
○: High suction performance.
Δ: Suction performance is slightly low, but is practical.
X: The sucking performance is low, which is a practical problem.

[粉落ちの評価方法]
製造した加湿濾材2枚を擦り合わせて、含浸したアクリル樹脂が不織布基材から剥離した量を測定した。評価基準としては、以下の通りである。
◎:剥離が全く無く、粉落ちが非常に良好。
○:剥離が僅かであり、粉落ちが良好。
△:剥離が少し見られるが、実用上問題がない。
×:剥離があり、実用上問題がある。
[Evaluation method of powder omission]
Two manufactured humidified filter media were rubbed together, and the amount of the impregnated acrylic resin peeled from the nonwoven fabric substrate was measured. The evaluation criteria are as follows.
(Double-circle): There is no peeling at all and powder fall off is very favorable.
○: Peeling is slight and powder falling off is good.
Δ: Some peeling is observed, but there is no practical problem.
X: There is peeling and there is a problem in practical use.

Figure 2018123980
Figure 2018123980

表1の結果から、不織布にアクリル樹脂を含有させた加湿濾材において、該アクリル樹脂中に、ガラス転移温度が90℃以上のアクリル樹脂が、10〜50質量%含まれることを特徴とする加湿濾材(実施例1〜3)は、十分な加湿量が得られる加湿濾材であることがわかる。ガラス転移温度が90℃以上のアクリル樹脂の含有量が、10%より少ない場合(比較例1)は、十分な加湿量が得られず、50質量%より多く含まれる場合(比較例2)は、粉落ちが発生する場合があり、好ましくない。ガラス転移温度が90℃より低い場合(比較例3〜5)は、十分な加湿量が得られなくなる。   From the results shown in Table 1, in the humidified filter medium in which the nonwoven fabric contains an acrylic resin, the acrylic resin contains 10 to 50% by mass of an acrylic resin having a glass transition temperature of 90 ° C. or higher. It turns out that (Examples 1-3) is a humidification filter medium from which sufficient humidification amount is obtained. When the content of the acrylic resin having a glass transition temperature of 90 ° C. or higher is less than 10% (Comparative Example 1), a sufficient humidification amount cannot be obtained, and when the content is more than 50% by mass (Comparative Example 2) In some cases, powder falling may occur. When the glass transition temperature is lower than 90 ° C. (Comparative Examples 3 to 5), a sufficient amount of humidification cannot be obtained.

本発明の加湿濾材及び加湿フィルターは、加湿機、加湿機能付き空気清浄機(加湿空気
清浄機)、エアワッシャー、冷風扇などに利用することができる。
The humidification filter medium and the humidification filter of the present invention can be used for a humidifier, an air cleaner with a humidifying function (humidified air cleaner), an air washer, a cold air fan, and the like.

Claims (2)

不織布にアクリル樹脂を含有させた加湿濾材において、該アクリル樹脂中に、ガラス転移温度が90℃以上のアクリル樹脂が、10〜50質量%含まれることを特徴とする加湿濾材。   A humidified filter medium comprising an acrylic resin in a nonwoven fabric, wherein the acrylic resin contains 10 to 50% by mass of an acrylic resin having a glass transition temperature of 90 ° C. or higher. 請求項1記載の加湿濾材を使用して成形されてなる加湿フィルター。   A humidifying filter formed using the humidified filter medium according to claim 1.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020235310A1 (en) * 2019-05-21 2020-11-26 星光Pmc株式会社 Method for producing resin composition, and resin composition

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020235310A1 (en) * 2019-05-21 2020-11-26 星光Pmc株式会社 Method for producing resin composition, and resin composition
JPWO2020235310A1 (en) * 2019-05-21 2021-12-23 星光Pmc株式会社 Resin composition manufacturing method and resin composition
JP7031089B2 (en) 2019-05-21 2022-03-08 星光Pmc株式会社 Resin composition manufacturing method and resin composition

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