JP2005052744A - Water-resistant adsorption sheet - Google Patents

Water-resistant adsorption sheet Download PDF

Info

Publication number
JP2005052744A
JP2005052744A JP2003286098A JP2003286098A JP2005052744A JP 2005052744 A JP2005052744 A JP 2005052744A JP 2003286098 A JP2003286098 A JP 2003286098A JP 2003286098 A JP2003286098 A JP 2003286098A JP 2005052744 A JP2005052744 A JP 2005052744A
Authority
JP
Japan
Prior art keywords
sheet
water
filter
adsorbent
adsorption sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP2003286098A
Other languages
Japanese (ja)
Inventor
Toyota Seki
豊太 関
Shinichi Minemura
愼一 峯村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyobo Co Ltd
Original Assignee
Toyobo Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyobo Co Ltd filed Critical Toyobo Co Ltd
Priority to JP2003286098A priority Critical patent/JP2005052744A/en
Publication of JP2005052744A publication Critical patent/JP2005052744A/en
Withdrawn legal-status Critical Current

Links

Landscapes

  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Separation Of Gases By Adsorption (AREA)
  • Filtering Materials (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To prepare an adsorption sheet for an air purifying filter, the shape and deodorizing/dust collecting performance of which can be maintained even under a severe condition such as water spray under ventilation and which has excellent water resistance particularly in the shape. <P>SOLUTION: This adsorption sheet has a small coefficient of water absorption with respect to its own weight (1), can be dehydrated quickly after absorbing water(2), and has fixed strength or higher after absorbing water when water is added to the adsorption sheet under ventilation. As a result, even when water is added to the filter which is obtained by pleating this adsorption sheet under the ventilation, the filter can be prevented from getting out of the shape by wind pressure and the water resistance of the filter can be improved. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、耐水・脱臭・除塵機能をあわせもつ空気清浄フィルターに関するものであって、特に本吸着シートをひだ折状に折り込んだ空気浄化用フィルターが、通風下における水噴霧にたいしても、風圧による変形が起こらないことを特徴とする耐水性吸着シートに関するものである。   The present invention relates to an air purification filter having both water resistance, deodorization and dust removal functions, and in particular, an air purification filter in which the present adsorption sheet is folded in a fold shape is deformed by wind pressure even for water spray under ventilation. The present invention relates to a water-resistant adsorbent sheet characterized in that no occurrence occurs.

空気清浄フィルターでは、活性炭・シリカゲル・ゼオライト・セピオライト等の粒子状吸着剤を含有したシートをプリーツ化したフィルターがよく使用される。特許文献1,特許文献2には活性炭を含有するシートをプリーツ状に成型したフィルターが開示されている。しかしながら水が取り込まれやすい環境下、例えば、自動車用空気浄化用フィルターに使用した場合においては、洗車時に使用する水が室内に侵入する可能性があり水吸収時にエアコンディショニング装置が稼働した際、その風圧によりシートが変形することによるフィルター構造抵抗の上昇でフィルター寿命が短くなるという欠点があった。このような空気清浄用フィルターの欠点を補う吸着性シートが望まれていた。
特開平2−135141 特開2000−24426
As an air cleaning filter, a filter pleated with a sheet containing a particulate adsorbent such as activated carbon, silica gel, zeolite, or sepiolite is often used. Patent Documents 1 and 2 disclose a filter obtained by forming a sheet containing activated carbon into a pleated shape. However, in an environment where water is easily taken up, for example, when used in an air purification filter for automobiles, there is a possibility that water used during car washing may enter the room. There is a drawback that the filter life is shortened due to an increase in the resistance of the filter structure due to the deformation of the sheet by the wind pressure. An adsorbent sheet that compensates for the drawbacks of such an air cleaning filter has been desired.
JP-A-2-135141 JP 2000-24426

本発明の課題は、通風下における水噴霧といった過酷な環境下においても、その形状・脱臭・除塵機能を維持することができ、特に形状面で耐水性に優れた空気清浄フィルター用吸着シートを提供することである。   An object of the present invention is to provide an adsorbing sheet for an air purifying filter that can maintain its shape, deodorization and dust removal function even in a harsh environment such as water spraying under ventilation, and is particularly excellent in water resistance in terms of shape. It is to be.

本発明は以上のような現状を考慮して、それらの問題を解決するために以下の手段を取る。請求項記載のように、1)自重に対する吸水率が小さく、2)更に吸水後すばやく脱水することができ、3)又、吸水後もある一定以上の強度を有している材料・シート構造を決定することにより、解決できることを見出した。更に付け加えると、クレム吸水度の規定により圧力損失を従来品並み以下に抑えた上で上記特徴を発現させることができることも見出した。   In consideration of the above-described present situation, the present invention takes the following means to solve these problems. As described in the claims, 1) the water absorption rate for its own weight is small, 2) it can be quickly dehydrated after water absorption, and 3) the material / sheet structure has a certain strength or more after water absorption. It was found that it can be solved by deciding. In addition, it has also been found that the above characteristics can be expressed while suppressing the pressure loss to the level of the conventional product or less according to the regulation of the water absorption of Krem.

本発明は、高湿度・高温度といった過酷な環境下においても、その形状・脱臭・除塵機能を維持することができ、特に形状面で耐水性に優れた空気清浄フィルター用吸着シートを提供するものである。   The present invention provides an adsorbent sheet for an air cleaning filter that can maintain its shape, deodorization, and dust removal function even under harsh environments such as high humidity and high temperature, and is particularly excellent in water resistance in terms of shape. It is.

本発明の吸着シートは、熱可塑性樹脂と粒状吸着材を混合し、熱可塑性樹脂を熱により融解させるのと同時に圧力をかけて、吸着材同士を一体的に形成させてなるシートであることが好ましい。   The adsorbing sheet of the present invention is a sheet formed by mixing a thermoplastic resin and a granular adsorbing material and melting the thermoplastic resin by heat and simultaneously applying pressure to integrally form the adsorbing materials. preferable.

ここで吸着材と混合する熱可塑性樹脂に小粒径と大粒径のものを混合するとより好ましい。なぜならば、大粒径の活性炭を混合することにより同じ接触面積でも複数点で活性炭同士を熱圧着させているものよりも1点で接触したほうが接着強度が高いためである。又、大粒径の熱可塑性樹脂を混合することにより吸着性シート内の充填率が下がり圧力損失を低くすることができるためである。   Here, it is more preferable to mix a small particle size and a large particle size into the thermoplastic resin mixed with the adsorbent. This is because, by mixing the activated carbon having a large particle size, the adhesive strength is higher when the activated carbon is contacted at one point than at the same contact area, even if the activated carbon is thermocompression bonded at a plurality of points. Moreover, it is because the filling rate in an adsorbent sheet | seat falls and pressure loss can be made low by mixing the thermoplastic resin of a large particle size.

熱可塑性樹脂として使用する材料の種類としては、ポリエステル系・ポリオレフィン系・ポリアミド・アクリル系をはじめ種々挙げられるが、水を吸収しにくい素材を使用することでより吸着シートの耐水性を向上させることができる。   There are various types of materials used as thermoplastic resins, including polyesters, polyolefins, polyamides, and acrylics. By using materials that do not easily absorb water, the water resistance of the absorbent sheet can be improved. Can do.

又、本発明の吸着シートは、主に支持繊維と接着性繊維からなる繊維層と、繊維層を形成する支持繊維と接着性繊維の連続した部分により吸着材が接着固定されてなる吸着材層とが一体的に形成されてなるシートであることが好ましい。かような繊維層を有することにより、粒状吸着材にふれずに折り曲げ加工等が可能となり、また、かような吸着材層を有することにより、粒状吸着材は脱臭シートに強固に一体的に固定され、折り曲げ加工時の粒状吸着材脱落が極めて生じ難くなるためである。   The adsorbent sheet of the present invention is composed of a fiber layer mainly composed of support fibers and adhesive fibers, and an adsorbent layer in which an adsorbent is bonded and fixed by a continuous portion of the support fibers and adhesive fibers forming the fiber layer. Are preferably formed integrally with each other. By having such a fiber layer, it is possible to bend without touching the granular adsorbent, and by having such an adsorbent layer, the granular adsorbent is firmly and integrally fixed to the deodorizing sheet. This is because the granular adsorbent is not easily dropped during the bending process.

本発明の吸着シートは、さらに粒状吸着材が支持繊維により湿式接着固定されていればより好ましい。ここで、湿式接着固定とは、粒状吸着材、支持繊維、必要により接着性繊維を水中に分散させたスラリーから湿式抄紙することにより接着固定することをいう。このように、湿式接着固定すれば、本発明に用いられる吸着シートは、溶融させた接着性繊維や接着剤の使用を最小限とし、粒状吸着材本来の吸着性能を最大限に利用することを可能とすると同時に、吸着性シート全体の通気抵抗を低く維持することが可能となるからでる。   In the adsorbing sheet of the present invention, it is more preferable that the granular adsorbent is wet-bonded and fixed by supporting fibers. Here, wet adhesion fixation means adhesion fixation by wet papermaking from a slurry in which granular adsorbents, supporting fibers, and optionally adhesive fibers are dispersed in water. In this way, if wet-adhesion fixing is used, the adsorption sheet used in the present invention minimizes the use of melted adhesive fibers and adhesives and maximizes the original adsorption performance of the granular adsorbent. This is because, at the same time, the ventilation resistance of the entire adsorbent sheet can be kept low.

本発明の吸着シートに含まれる吸着材以外の材料としての繊維の繊維長は、3mm以上20mm以下であることが好ましい。3mm未満の場合には、通気性が悪くなり、20mmを超える場合には、通気抵抗、吸着性能のバラツキが大きくなるためである。   The fiber length of the fiber as a material other than the adsorbent contained in the adsorbent sheet of the present invention is preferably 3 mm or more and 20 mm or less. This is because if the diameter is less than 3 mm, the air permeability deteriorates, and if it exceeds 20 mm, the air resistance and the adsorption performance vary greatly.

本発明の吸着シートに含まれる粒状吸着材の平均粒子径は、通気性、吸着材の脱落、抄紙性等を考慮して、JIS標準ふるい(JISZ8801)による値で平均60μm以上600μm以下であることが好ましく、100μm以上500μm以下であればより好ましい。平均粒子径が60μm未満の場合には、一定の高吸着容量を得るのに通気抵抗が大きくなりすぎ、また、同時にシート充填密度が高くなりやすく、粉塵供給時に早期の通気抵抗上昇を引き起こす原因にもなる。平均粒子径が600μmを越える場合には、脱落が生じやすくなり、またワンパスでの初期吸着性能が極端に低くなり、更にはプリーツ形状及びハニカム状等の空気清浄フィルターとしたときの折り曲げ、及び波状加工時の加工性が悪くなる。なお、上記の粒状吸着材は、通常の分級機を使用して所定の粒度調整をすることにより、得ることが可能である。   The average particle diameter of the granular adsorbent contained in the adsorbent sheet of the present invention is an average value of 60 μm or more and 600 μm or less in terms of JIS standard sieve (JISZ8801) in consideration of air permeability, adsorbent dropout, papermaking property, etc. Is preferable, and more preferably 100 μm or more and 500 μm or less. When the average particle size is less than 60 μm, the airflow resistance becomes too large to obtain a certain high adsorption capacity, and at the same time, the sheet filling density tends to be high, which causes an early increase in airflow resistance when supplying dust. Also become. When the average particle diameter exceeds 600 μm, the drop-out is likely to occur, the initial adsorption performance in one pass is extremely low, and further, when the air purification filter is formed into a pleated shape or a honeycomb shape, the wave is bent. Workability at the time of processing deteriorates. In addition, said granular adsorbent can be obtained by carrying out predetermined particle size adjustment using a normal classifier.

本発明の吸着シートに含まれる粒状吸着材として、例えば粒状活性炭等を使用した場合、その種類は、特に限定されるものではなく、例えば、ヤシガラ系、木質系、石炭系等が好適に用いられる。また、上記の粒状吸着材は、形状的には破砕炭、造粒炭、ビーズ炭等が好適に用いられる。   For example, when granular activated carbon or the like is used as the granular adsorbent contained in the adsorption sheet of the present invention, the type thereof is not particularly limited, and for example, coconut husk type, wood type, coal type and the like are preferably used. . The granular adsorbent is preferably crushed charcoal, granulated charcoal, bead charcoal or the like in terms of shape.

本発明の吸着シートに含まれる粒状吸着材のJISK1474に準拠して測定したときのトルエン吸着量は、20重量%以上が好ましい。悪臭ガス等の無極性のガス状及び液状物質に対して高い吸着性能を必要とするためである。   As for the amount of toluene adsorption when measured based on JISK1474 of the granular adsorbent contained in the adsorbing sheet of the present invention, 20% by weight or more is preferable. This is because high adsorption performance is required for nonpolar gaseous and liquid substances such as malodorous gases.

本発明の吸着シートに含まれる粒状吸着材は、極性物質の吸着性能を向上することを目的として、薬品処理を施して用いてもよい。ガス薬品処理に用いられる薬品としては、アルデヒド系ガスやNOx等の窒素化合物、SOx等の硫黄化合物、酢酸等の酸性の極性物質に対しては、例えばエタノールアミン、ポリエチレンイミン、アニリン、p−アニシジン、スルファニル酸等のアミン系薬剤や水酸化ナトリウム、水酸化カリウム、炭酸グアニジン、リン酸グアニジン、アミノグアニジン硫酸塩、5,5−ジメチルヒダントイン、ベンゾグアナミン、2,2−イミノジエタノール、2,2,2−ニトロトリエタノール、エタノールアミン塩酸塩、2−アミノエタノール、2,2−イミノジエタノール塩酸塩、p−アミノ安息香酸、スルファニル酸ナトリウム、L−アルギニン、メチルアミン塩酸塩、セミカルバジド塩酸塩、ヒドラジン、ヒドロキノン、硫酸ヒドロキシルアミン、過マンガン酸塩、炭酸カリウム、炭酸水素カリウム等が好適に用いられ、アンモニア、メチルアミン、トリメチルアミン、ピリジン等の塩基性の極性物質に対しては、例えば、リン酸、クエン酸、リンゴ酸、アスコルビン酸等が好適に用いられる。なお、薬品処理は、例えば、粒状吸着材に薬品を担持させたり、添着することにより行う。また、吸着材に直接薬品を処理する以外に、シート面表面付近に通常のコーティング法等で添着加工する方法やシート全体に含浸添着することも可能である。   The granular adsorbent contained in the adsorbing sheet of the present invention may be used after chemical treatment for the purpose of improving the adsorption performance of polar substances. Examples of chemicals used in gas chemical treatment include aldehyde gases, nitrogen compounds such as NOx, sulfur compounds such as SOx, and acidic polar substances such as acetic acid such as ethanolamine, polyethyleneimine, aniline, and p-anisidine. , Amine drugs such as sulfanilic acid, sodium hydroxide, potassium hydroxide, guanidine carbonate, guanidine phosphate, aminoguanidine sulfate, 5,5-dimethylhydantoin, benzoguanamine, 2,2-iminodiethanol, 2,2,2 -Nitrotriethanol, ethanolamine hydrochloride, 2-aminoethanol, 2,2-iminodiethanol hydrochloride, p-aminobenzoic acid, sodium sulfanilate, L-arginine, methylamine hydrochloride, semicarbazide hydrochloride, hydrazine, hydroquinone , Hydroxyla sulfate , Permanganate, potassium carbonate, potassium hydrogen carbonate, etc. are preferably used. For basic polar substances such as ammonia, methylamine, trimethylamine, pyridine, phosphoric acid, citric acid, malic acid, etc. Ascorbic acid and the like are preferably used. The chemical treatment is performed, for example, by supporting or attaching a chemical to the granular adsorbent. In addition to directly treating the adsorbent with chemicals, it is also possible to impregnate the entire sheet, such as a method of applying an adhering process near the surface of the sheet by a normal coating method or the like.

本発明の吸着シートは、吸着材と熱融着性樹脂からなる吸着材粒子含有シートと通気性シートを積層一体化したシートである。   The adsorbent sheet of the present invention is a sheet in which an adsorbent particle-containing sheet made of an adsorbent and a heat-fusible resin and a breathable sheet are laminated and integrated.

本発明の吸着シートの全厚み中に占める吸着材の厚みの割合は、65%以上90%以下であることが好ましい。70%以上80%以下であればより好ましい。吸着シートの全厚み中に占める吸着材の厚みの割合が65%未満では、後述の吸着シートユニット化後の耐水性評価法で、吸着シートをひだ折したフィルターに通風下で水が加えられた場合、吸着シートを構成する吸着材以外の材料の吸水で風圧によりフィルター形状が崩れ通気抵抗が上昇し、フィルター寿命の低下につながる。90%より大きい場合は、その他の材料によって吸着材を保持する効果が薄れるため吸着シートの強度そのものが低くなり同様にしてフィルター寿命の低下につながる。吸着材は一般に固形物であり、水の吸収により変形することがないため、吸着シートの全厚み中に占める吸着材の厚みの割合が上記範囲内にあれば耐水性に優れたフィルターとなる。   The ratio of the thickness of the adsorbent in the total thickness of the adsorption sheet of the present invention is preferably 65% or more and 90% or less. More preferably, it is 70% or more and 80% or less. When the ratio of the thickness of the adsorbent to the total thickness of the adsorbing sheet was less than 65%, water was added to the filter in which the adsorbing sheet was folded under ventilation in the water resistance evaluation method after forming the adsorbing sheet unit described later. In this case, water absorption of materials other than the adsorbent constituting the adsorbent sheet causes the filter shape to collapse due to wind pressure, resulting in an increase in ventilation resistance, leading to a decrease in filter life. If it is larger than 90%, the effect of holding the adsorbent by other materials is weakened, so that the strength of the adsorbing sheet itself is lowered and the life of the filter is similarly reduced. Since the adsorbent is generally a solid material and is not deformed by water absorption, the adsorbent has a water resistance as long as the ratio of the adsorbent thickness in the total thickness of the adsorbent sheet is within the above range.

JISP8141記載の吸水度試験によるクレム吸水度が30mm以下であることが好ましい。10mm以上20mm以下であればより好ましい。なぜならば、クレム吸水度が30mm以上である吸着シートをひだ折したフィルターに、通風下で水が加えられた場合、風圧によりフィルター形状が崩れ通気抵抗が上昇しフィルター寿命の低下につながるためである。又、仮に、クレム吸水度が30mmより大きいが脱水速度の大きい吸着シートであったとしても、クレム吸水度が30mmより大きいということは、吸着シートとしての厚みが大きいため、ひだ折してフィルターとした時の構造抵抗が上昇し通気抵抗が高いフィルターとなってしまい実用的でない。クレム吸水度が10mm以下である場合、吸着シートを構成する吸着材の割合が高く吸着シートとしての強度が小さくなり、これをひだ折したフィルターに通風下で水が加えられた場合、風圧によりフィルター形状が崩れ通気抵抗が上昇しフィルター寿命の低下につながってしまう。   It is preferable that the water absorption by Klem according to JISP8141 is 30 mm or less. More preferably, it is 10 mm or more and 20 mm or less. This is because, when water is added under ventilation to a filter in which an adsorbent sheet with a Krem water absorption of 30 mm or more is folded, the filter shape collapses due to wind pressure and the ventilation resistance increases, leading to a decrease in filter life. . In addition, even if the adsorbing sheet has a Krem water absorption of greater than 30 mm but a high dehydration rate, the Klem water absorption of greater than 30 mm means that the thickness of the adsorbing sheet is large, so that the filter can be folded. In this case, the structural resistance rises and the ventilation resistance becomes high, which is impractical. When the water absorption of Klem is 10 mm or less, the ratio of the adsorbent constituting the adsorbing sheet is high, and the strength as the adsorbing sheet is reduced. When water is added to the folded filter under ventilation, it is filtered by the wind pressure. The shape collapses and the ventilation resistance increases, leading to a decrease in filter life.

今回評価法に採用している、JISP8141、JISP8111は、平成8年3月1日に改正された方法である。詳細は、規格本文に譲るが、JISP8141の概略を以下に示す。
クレム吸水度の定義:
紙の下端を垂直に水の中に浸漬し、毛管現象によって、10分間に水が上昇した高さ(mm)。
操作:
1) 操作はJISP8111に規定する標準条件で行う。
2) 装置を水平に調節する。
3) 浸漬容器に入れる水は、20±1℃の蒸留水を用いる。
4) 試験片は、短辺から15mmのところに平行に鉛筆で標線を引き、標線を目盛板の0位置に合わせてつり下げ具に固定し、垂直に保持する。
5) 標線まで素早く水に入れ、タイマーをスタートさせる。10分間(*)に上昇した水の幅方向の平均的な高さを、mm単位で読み取る。[(*)吸水の多い試験片の場合は、時間を短縮できるが、その旨報告に記録する。]
前述の吸着シートを、JISP8111に規定する方法にて前処理し自重を測定後、通過風速0.15m/s下で2.5kg/(min・m2)の水を1分間散布し、1分間通過風速0.15m/s下で通風乾燥した後の水吸収量が自重の3倍以下であることが好ましい。2倍以下であればより好ましい。この範囲にある吸着シートをひだ折したフィルターは、通風下で水が加えられてもフィルター形状を維持し通気抵抗の上昇が起こらない。なぜならば、吸着シートの脱水力が高いため通風下で水を加えられたとしても吸着シートの総重量の増加を小さく抑えることができ、フィルターにかかる力を小さくすることができるためである。
JISP8141 and JISP8111 adopted in this evaluation method are methods revised on March 1, 1996. Details are given in the standard text, but the outline of JISP8141 is shown below.
Definition of Krem absorbency:
The height (mm) at which the lower end of the paper was vertically immersed in water and the water rose for 10 minutes by capillary action.
operation:
1) Operation is performed under the standard conditions specified in JISP8111.
2) Adjust the device horizontally.
3) Use 20 ± 1 ° C distilled water as the water in the immersion container.
4) Draw a marked line with a pencil in parallel at a distance of 15 mm from the short side, fix the marked line to the 0 position of the scale plate, and fix it to the hanging tool and hold it vertically.
5) Pour water quickly to the marked line and start the timer. Read the average height in the width direction of the water that rose for 10 minutes (*) in mm. [(*) In the case of a specimen with a lot of water absorption, the time can be shortened, but this is recorded in the report. ]
After pre-treating the above adsorbing sheet by the method specified in JISP8111 and measuring its own weight, water of 2.5 kg / (min · m 2 ) is sprayed for 1 minute under a passing wind speed of 0.15 m / s for 1 minute. It is preferable that the water absorption after drying by ventilation at a passing air velocity of 0.15 m / s is not more than 3 times its own weight. Two times or less is more preferable. A filter that has folded an adsorbing sheet in this range maintains the filter shape and does not increase the ventilation resistance even if water is added under ventilation. This is because, since the dewatering power of the adsorbing sheet is high, an increase in the total weight of the adsorbing sheet can be suppressed even if water is added under ventilation, and the force applied to the filter can be reduced.

前述の試験を実施した吸着シートについて、1分以内にJISL1096B記載内容に従って剛軟度を測定した値が、10gfcm以上であることが好ましい。20gfcm以上であればより好ましい。10gf未満であるならば、脱水力に優れていたとしても吸着シート自体の強度が小さいため、この吸着シートをひだ折したフィルターに、通風下で水が加えられた場合、風圧によりフィルター形状が崩れ通気抵抗が上昇しフィルター寿命の低下につながってしまう。   It is preferable that the value of the bending resistance measured in accordance with the contents described in JISL1096B within 1 minute is 10 gfcm or more for the adsorption sheet subjected to the above test. More preferably, it is 20 gfcm or more. If it is less than 10 gf, the strength of the adsorbing sheet itself is small even if it has excellent dewatering power. Therefore, if water is added to the filter that has folded the adsorbing sheet under ventilation, the filter shape will collapse due to the wind pressure. Ventilation resistance increases and the filter life is reduced.

今回評価法に採用している、JISL1096Bは、平成2年1月1日に改正された方法である。詳細は、規格本文に譲るが、JISL1096Bの概略を以下に示す。
操作:
1) 試料は、試験片の採取に十分な大きさとし、原則として織物の端末から100cm以上、耳のあるものは耳端から10cm以上離れた部分から採取し、標準状態とする。
2) 1)によって採取した試料から、2×約15cmの試験片を縦方向及び横方向にそれぞれ5枚採取し、図1に示す試験機を用い、まず試験機本体と移動台の上面が一致するようにしてから、その上に試験片及びウエイトを取り付ける。
3) ウエイトは試験片上に試験機本体と移動台の境界からわずかに移動台側にでるように置く。
4) 次に静かにハンドルを回して移動台を降下させ、試験片の自由端が移動台から離れるときのσの値をスケールによって読む。試験片の単位面積当たりの質量(g/cm2)を量り、次の式によって剛軟度(N・cm{gf・cm})を求め、それぞれ5枚の表裏について測り、縦方向及び横方向の平均値で表す。
JISL1096B adopted in this evaluation method is a method revised on January 1, 1990. Details are given in the main text of the standard, but an outline of JISL1096B is shown below.
operation:
1) The sample should be large enough to collect the test piece. In principle, the sample should be taken from a part 100 cm or more away from the end of the fabric, and 10 cm or more away from the end of the ear.
2) From the sample collected in 1), 5 x 2 x 15 cm test specimens were collected in the vertical and horizontal directions, and using the tester shown in Fig. 1, the top surface of the tester body and the moving table were first aligned. Then, attach a test piece and weight on it.
3) Place the weight on the test piece so that it slightly protrudes from the boundary between the main body of the tester and the moving table.
4) Next, gently turn the handle to lower the moving table, and read the value of σ when the free end of the specimen moves away from the moving table using the scale. The mass per unit area (g / cm 2 ) of the test piece is measured, the bending resistance (N · cm {gf · cm}) is obtained by the following formula, and the front and back are measured for each of the five front and back sides. It is expressed as an average value.

剛軟度(N・cm{gf・cm})=WL4/(8σ)
W:試験片の単位面積当たりの重力 (N・cm{gf・cm})
L:試験片の長さ(cm)
σ:試験片のたわみ(cm)
吸着シートを構成する吸着材以外の材料として使用する繊維は、シースコア構造でもサイドバイサイド構造、あるいは捲縮のある繊維でもよい。
Flexibility (N · cm {gf · cm}) = WL 4 / (8σ)
W: Gravity per unit area of the test piece (N · cm {gf · cm})
L: Length of test piece (cm)
σ: Deflection of specimen (cm)
The fiber used as a material other than the adsorbent constituting the adsorbing sheet may be a seascore structure, a side-by-side structure, or a crimped fiber.

本発明の吸着材粒子含有シートは、抗菌剤・抗かび剤・抗ウィルス剤・難燃剤等の付随的機能を有する成分等を含めて構成してもよい。これらの成分は繊維類中に練りこんでも、後加工で添着、及び担持して付与してもよい。例えば、難燃剤を含めて構成することにより、FMVSS.302で規定されている遅燃性の基準やUL難燃規格に合致した吸着性シートを製造することが可能である。又、繊維類に吸着性能を有する繊維、例えば、イオン交換繊維等を用いることにより、吸着機能を強化することも可能である。   The adsorbent particle-containing sheet of the present invention may include a component having an incidental function such as an antibacterial agent, an antifungal agent, an antiviral agent, or a flame retardant. These components may be kneaded into the fibers, or may be added and supported by post-processing. For example, by including a flame retardant, FMVSS. It is possible to manufacture an adsorbent sheet that meets the standards for retarding flame retardancy defined in 302 and UL flame retardant standards. Moreover, it is also possible to reinforce the adsorption function by using fibers having adsorption performance, such as ion exchange fibers.

本発明の吸着シートの厚みは、0.3mm以上2.5mm以下が好ましい。通気性や加工性を良好にするためである。   The thickness of the suction sheet of the present invention is preferably 0.3 mm or more and 2.5 mm or less. This is for improving air permeability and workability.

本発明の吸着シートの充填密度は、0.15g/cc以上0.30g/cc以下であれば好ましく、0.17g/cc以上0.25g/cc以下であればより好ましい。0.15g/cc未満の場合には、粉塵除去効率が低くなり、0.3g/ccを超える場合には、目詰まりにより早期の通気抵抗上昇を引き起こし、フィルターとしては好ましくない。   The packing density of the adsorption sheet of the present invention is preferably 0.15 g / cc or more and 0.30 g / cc or less, and more preferably 0.17 g / cc or more and 0.25 g / cc or less. If it is less than 0.15 g / cc, the dust removal efficiency becomes low, and if it exceeds 0.3 g / cc, it causes an early increase in ventilation resistance due to clogging, which is not preferable as a filter.

本発明の吸着性シートは、プリーツ状や波状に成型することによりフィルターユニット化が可能となる。この際のフィルター厚みはカーエアコン内部装着をはじめとする車載用途や家庭用空気清浄機であれば、通常の内部スペースの関係から、10mm以上60mm以下程度、ビル空調用途へよく設置される大型のフィルターユニットであれば40mm以上400mm以下程度が収納スペースから考えると適している。ひだ山頂点間隔は2mm以上30mm以下程度が適している。2mm以下ではひだ山間が密着しすぎでデッドスペースが多く、効率的にシートを活用できなくなる。一方、30mm以上ではシート展開面積が小さくなるためフィルター厚みに応じた除去効果を得ることができなくなる。   The adsorptive sheet of the present invention can be formed into a filter unit by molding it into a pleated shape or a wave shape. The filter thickness at this time is about 10mm to 60mm, which is a large size that is often installed in building air conditioning applications, because of the normal internal space, if it is installed in a car air conditioner such as a car air conditioner. If it is a filter unit, about 40 mm or more and 400 mm or less are suitable from the viewpoint of storage space. A suitable interval between the fold peaks is about 2 mm to 30 mm. If it is 2 mm or less, the ridges are too close together and there is a lot of dead space, making it impossible to use the sheet efficiently. On the other hand, if it is 30 mm or more, the sheet development area becomes small, so that it is impossible to obtain a removal effect corresponding to the filter thickness.

本発明に用いられる吸着シートに含まれる吸着材以外の材質は、例えば、ポリエステル・ポリアクリロニトリル・ポリアミド・ポリオレフィン・ビニロン等の合成繊維の他、リンター・木綿・麻・木材パルプ・レーヨン・ガラス繊維等が用いられる。これらのなかでも、疎水性であるポリエステル・ポリアクリロニトリル・ポリアミド・ポリオレフィン・ビニロン・ガラス繊維等を用いることがより好ましい。   Materials other than the adsorbent contained in the adsorbent sheet used in the present invention include, for example, synthetic fibers such as polyester, polyacrylonitrile, polyamide, polyolefin, vinylon, linter, cotton, hemp, wood pulp, rayon, glass fiber, etc. Is used. Of these, it is more preferable to use hydrophobic polyester, polyacrylonitrile, polyamide, polyolefin, vinylon, glass fiber or the like.

通気性シートは、エレクトレット化された通気性シートであっても良い。エレクトレット化された通気性シートを積層すれば、タバコ煙粒子・カーボン粒子・海塩粒子をはじめとするサブミクロン粒子に対する除去効果を増大させることも可能である。   The breathable sheet may be an electret breathable sheet. If the electret breathable sheet is laminated, it is possible to increase the removal effect on submicron particles such as tobacco smoke particles, carbon particles, and sea salt particles.

本発明の吸着シートにおいて、吸着材と熱融着性樹脂からなる吸着材粒子含有シートと、通気性シートを積層一体化する方法は特に限定されるものではない。
単純に重ね合わせるだけでもよく、また少量の接着剤の塗布、あるいは熱融着性を利用した接着法、たとえば、接着繊維を被接着体に吹きかける方法、接着性シートをシート間に挿入し接着する方法や、超音波により融着させ接着する方法、ニードルパンチ、エアーパンチ等の機械的交絡法を使用すればより強固に一体化できるため好ましい。
In the adsorbing sheet of the present invention, the method for laminating and integrating the adsorbent particle-containing sheet composed of the adsorbing material and the heat-fusible resin and the breathable sheet is not particularly limited.
It can be simply overlapped, or a small amount of adhesive can be applied, or a bonding method using heat-fusibility, for example, a method in which adhesive fibers are sprayed onto the adherend, and an adhesive sheet is inserted between the sheets to be bonded. It is preferable to use a method, a method of fusing and bonding with ultrasonic waves, or a mechanical entanglement method such as a needle punch or an air punch because it can be integrated more firmly.

本発明の吸着シートを使用した空気清浄フィルターは、高い強度をもつ通気性シート側を上流側に配置するほうが好ましい。こうすることにより、この吸着シートをひだ折したフィルターに、通風下で水が加えられた場合、風圧によりフィルター形状が崩れることを防ぐ効果があり、耐水性を有するフィルターとすることができるためである。   In the air purifying filter using the adsorbing sheet of the present invention, it is preferable to arrange the breathable sheet side having high strength on the upstream side. By doing this, when water is added under ventilation to the filter that folded the adsorbing sheet, it has the effect of preventing the filter shape from collapsing due to wind pressure, and it can be made a filter having water resistance. is there.

以下本発明を実施例によって更に詳細に説明するが、下記実施例は本発明を限定する性質のものではなく、前・後記の趣旨に沿って設計変更することはいずれも本発明の技術的範囲に含まれるものである。尚、実施例中の数値は以下のような方法で測定した値である。
1) 吸着シート吸水度評価法:
JISP8141記載の「紙及び板紙のクレム法による吸水度試験方法」に従い、吸着シートを測定した。
2) 吸着シート吸脱水度評価法:
JISP8111の方法にて吸着シートを前処理し自重Aを測定後、通過風速0.15m/s下で2.5kg/(min・m2) の水を1分間散布し、1分間通過風速0.15m/s下で通風乾燥した後1分以内に吸着シートBを測定した。水分吸収量C (=B−A)としたときの以下の値Xを計算した。
Hereinafter, the present invention will be described in more detail with reference to examples. However, the following examples are not intended to limit the present invention, and any design changes in accordance with the gist of the preceding and following descriptions are all within the technical scope of the present invention. Is included. In addition, the numerical value in an Example is the value measured by the following methods.
1) Adsorption sheet water absorption evaluation method:
The adsorbing sheet was measured according to “Paper and paperboard Krem method water absorption test method” described in JISP8141.
2) Adsorption sheet absorption and desorption degree evaluation method:
After pretreatment of the adsorbing sheet by the method of JISP8111 and measuring its own weight A, 2.5 kg / (min · m 2 ) of water was sprayed for 1 minute under a passing wind speed of 0.15 m / s, and the passing wind speed was 0. The adsorption sheet B was measured within 1 minute after being dried by ventilation at 15 m / s. The following value X was calculated when the water absorption amount C (= BA).

X=C/A
3) 吸脱水度評価後の吸着シート強度評価法:
上記Xを測定後、1分以内にJISL1096B記載内容に従い、剛軟度を測定した。
なお試験片の幅は15mm、有効試験片の長さは10cmとして測定した。
4) 吸着シートユニット化後の耐水性評価法:
210mm×200mm×28mmのフィルター枠内に脱臭シートを0.339m2折り込んだ空気浄化用フィルターに、100g/min×1min の水を風量560m3/hour下で噴霧しその際の通気抵抗を測定した。その後、自然乾燥にて5時間放置した。この工程を15回繰り返し、初期圧力損失から15回の水噴霧を繰り返した後の通気抵抗上昇率を計算し、上昇率が小さい程、耐水性に優れている吸着シートとした。(図2)

通気抵抗上昇率(%)={(15回の水噴霧を繰り返した後の通気抵抗)/(初期通気抵抗)−1}×100
5) 吸着シート厚み
吸着シート厚みは7gf/cm2の荷重下で測定した。
X = C / A
3) Adsorption sheet strength evaluation method after the absorption / dehydration degree evaluation:
After measuring the above X, the bending resistance was measured within 1 minute according to the contents described in JISL1096B.
The width of the test piece was 15 mm, and the length of the effective test piece was 10 cm.
4) Water resistance evaluation method after adsorption sheet unit:
100 g / min × 1 min of water was sprayed under an air volume of 560 m 3 / hour on an air purification filter in which a deodorizing sheet was folded into 0.339 m 2 in a 210 mm × 200 mm × 28 mm filter frame, and the ventilation resistance at that time was measured. . Then, it was left for 5 hours by natural drying. This step was repeated 15 times, and the rate of increase in ventilation resistance after repeating 15 times of water spraying from the initial pressure loss was calculated. The smaller the rate of increase, the better the water-absorbent sheet. (Figure 2)

Ventilation resistance increase rate (%) = {(Ventilation resistance after repeating 15 times of water spraying) / (Initial ventilation resistance) -1} × 100
5) Adsorption sheet thickness The adsorption sheet thickness was measured under a load of 7 gf / cm 2 .

[実施例1]
平均粒径140μmである粒状活性炭を70重量部、6デニール×繊維長5mmのポリエステルを10重量部、2デニール×繊維長5mmのポリエステル製芯鞘複合繊維を8重量部、水膨潤性熱溶融性繊維である1デニール×繊維長3mmのポリビニルアルコールを12重量部とを水中で混合、分散させ湿式抄紙用原液を作成した。これを長網式抄紙法にて抄紙して湿潤ウェッブをつくり、その後プレスローラーで軽く絞り140℃で回転乾燥ドラムにて乾燥し、目付170g/m2、シート充填密度0.21g/ccの吸着材粒子含有シートを得た。通気性シートには、15デニール×51mm、20デニール×51mm、4デニール×51mmを重量比で60:30:10に混合して作製した目付60g/m2、厚み0.3mm、通過風速30cm/sでの通気抵抗3Paのポリエステル製サーマルボンド不織布を使用した。これらの吸着材粒子含有シートと通気性シート間に、融点が110℃・目付10g/m2であるポリアミド系不織布を挟んで、130℃下で熱プレスを実施し一体化した吸着シート1を製造した。この吸着シートを使って、評価を実施した。(表1参照)
[実施例2]
平均粒径200μmである粒状活性炭を100重量部、熱可塑性エチレン−アクリル酸共重合樹脂を10重量部、混合し、目付が30g/m2であるエチレン−ポリエステル複合不織布上にこの混合物を目付が130g/m2となるように均一に散布後、更に実施例1に記載した通気性シートを上から被せ、120℃で熱プレスを実施し一体化した吸着シート2を製造した。吸着シートの充填密度は、0.20g/ccであった。この吸着シートを使って、評価を実施した。(表1参照)
[比較例1]
平均粒径140μmである粒状活性炭を70重量部、8デニール×繊維長8mmのレーヨン繊維を6重量部、4デニール×繊維長4mmのレーヨン繊維を6重量部、4デニール×4mmのレーヨン繊維を4重量部、水膨潤性熱溶融性繊維である1デニール×繊維長3mmのポリビニルアルコールを12重量部とを水中で混合、分散させ湿式抄紙用原液を作成した。これを長網式抄紙法にて抄紙して湿潤ウェッブをつくり、その後プレスローラーで軽く絞り140℃で回転乾燥ドラムにて乾燥し、目付170g/m2、シート充填密度0.21g/ccの吸着材粒子含有シートを得た。通気性シートには、15デニール×51mm、20デニール×51mm、4デニール×51mmを重量比で60:30:10に混合して作製した目付60g/m2、厚み0.3mm、通過風速30cm/sでの通気抵抗3Paのポリエステル製サーマルボンド不織布を使用した。これらの吸着材粒子含有シートと通気性シート間に、融点が110℃・目付10g/m2であるポリアミド系不織布を挟んで、130℃下で熱プレスを実施し一体化した吸着シート3を製造した。この吸着シートを使って、評価を実施した。(表1参照)
[比較例2]
平均粒径300μmである粒状活性炭を、熱可塑性ポリアミド系樹脂からなる20g/m2のホットメルト不織布を予め積層したポリエステルからなる30g/m2の不織布上に150g/m2散布し熱プレスを実施した。この上からもう一度、熱可塑性ポリアミド系樹脂からなる20g/m2のホットメルト不織布を積層し、平均粒径300μmである粒状活性炭を150g/m2散布した。更に、熱可塑性ポリアミド系樹脂からなる20g/m2のホットメルト不織布を予め積層したポリエステルからなる30g/m2の不織布を、ホットメルト不織布側が、散布した粒状活性炭側と重なるように積層して熱プレスを実施し一体化した吸着シート4を製造した。吸着シートの充填密度は、0.35g/ccであった。この吸着シートを使って、評価を実施した。(表1参照)
[Example 1]
70 parts by weight of granular activated carbon having an average particle size of 140 μm, 10 parts by weight of polyester having 6 denier × 5 mm fiber length, 8 parts by weight of polyester-sheath composite fiber having 2 denier × 5 mm fiber length, water-swellable heat-fusible A fiber stock solution for wet papermaking was prepared by mixing and dispersing 12 parts by weight of polyvinyl alcohol of 1 denier fiber × 3 mm fiber length in water. This is made by a long net paper making method to form a wet web, and then lightly drawn by a press roller and dried by a rotary drying drum at 140 ° C., and adsorbed with a basis weight of 170 g / m 2 and a sheet filling density of 0.21 g / cc. A material particle-containing sheet was obtained. The breathable sheet was prepared by mixing 15 denier x 51 mm, 20 denier x 51 mm, 4 denier x 51 mm in a weight ratio of 60:30:10, a basis weight of 60 g / m 2 , a thickness of 0.3 mm, and a passing wind speed of 30 cm / A polyester thermal bond nonwoven fabric having a ventilation resistance of 3 Pa at s was used. The adsorbent sheet 1 is manufactured by sandwiching a polyamide non-woven fabric having a melting point of 110 ° C. and a basis weight of 10 g / m 2 between the adsorbent particle-containing sheet and the air permeable sheet, and performing a heat press at 130 ° C. did. Evaluation was performed using this adsorption sheet. (See Table 1)
[Example 2]
100 parts by weight of granular activated carbon having an average particle size of 200 μm and 10 parts by weight of thermoplastic ethylene-acrylic acid copolymer resin are mixed, and this mixture is weighted on an ethylene-polyester composite nonwoven fabric having a basis weight of 30 g / m 2. After uniformly spraying to 130 g / m 2 , the breathable sheet described in Example 1 was further covered from above, and heat pressing was performed at 120 ° C. to produce an integrated adsorption sheet 2. The packing density of the adsorption sheet was 0.20 g / cc. Evaluation was performed using this adsorption sheet. (See Table 1)
[Comparative Example 1]
70 parts by weight of granular activated carbon having an average particle size of 140 μm, 6 parts by weight of rayon fiber having 8 denier × 8 mm fiber length, 6 parts by weight of rayon fiber having 4 denier × 4 mm fiber length, 4 parts of rayon fiber having 4 denier × 4 mm fiber length A stock solution for wet papermaking was prepared by mixing and dispersing 12 parts by weight of polyvinyl alcohol having a weight of 1 denier and a fiber length of 3 mm, which are water-swellable heat-meltable fibers, in water. This is made by a long net paper making method to form a wet web, and then lightly drawn by a press roller and dried by a rotary drying drum at 140 ° C., and adsorbed with a basis weight of 170 g / m 2 and a sheet filling density of 0.21 g / cc. A material particle-containing sheet was obtained. The breathable sheet was prepared by mixing 15 denier x 51 mm, 20 denier x 51 mm, 4 denier x 51 mm in a weight ratio of 60:30:10, a basis weight of 60 g / m 2 , a thickness of 0.3 mm, and a passing wind speed of 30 cm / A polyester thermal bond nonwoven fabric having a ventilation resistance of 3 Pa at s was used. A polyamide-based non-woven fabric having a melting point of 110 ° C. and a basis weight of 10 g / m 2 is sandwiched between the adsorbent particle-containing sheet and the air-permeable sheet, and heat pressing is performed at 130 ° C. to produce an integrated adsorbing sheet 3. did. Evaluation was performed using this adsorption sheet. (See Table 1)
[Comparative Example 2]
The granular activated carbon having an average particle diameter of 300 [mu] m, implementing the 150 g / m 2 spraying hot pressed onto the nonwoven thermoplastic polyamide of 20 g / m 2 made of resin hot melt nonwoven fabric made of pre-laminated polyester 30 g / m 2 did. From above, another 20 g / m 2 hot melt nonwoven fabric made of thermoplastic polyamide resin was laminated, and granular activated carbon having an average particle size of 300 μm was sprayed at 150 g / m 2 . Further, a 30 g / m 2 non-woven fabric made of polyester on which a 20 g / m 2 hot-melt non-woven fabric made of a thermoplastic polyamide resin was previously laminated was laminated so that the hot-melt non-woven fabric side overlapped with the dispersed granular activated carbon side. The integrated suction sheet 4 was manufactured by pressing. The packing density of the adsorption sheet was 0.35 g / cc. Evaluation was performed using this adsorption sheet. (See Table 1)

表1のように、請求項記載の範囲内にある実施例1、実施例2の吸着シートをひだ折したフィルターに、通風下で水が加えられた場合、風圧によりフィルター形状が崩れることがなく、フィルター通気抵抗は水が加えられる前後で変化しないことが分かる。一方、比較例1、比較例2の吸着シートをひだ折したフィルターに、通風下で水が加えられた場合、比較例1では吸着シートの変形によりフィルター通気抵抗が水が加えられる前後で大きく上昇しフィルターとしての寿命が短くなる。比較例2では、水が加えられる前後でフィルターの通気抵抗は変化しないものの、もともとのフィルター通気抵抗が高いものとなる。 As shown in Table 1, when water is added under ventilation to the filter in which the adsorption sheets of Examples 1 and 2 within the scope of the claims are folded, the filter shape does not collapse due to wind pressure. It can be seen that the filter ventilation resistance does not change before and after water is added. On the other hand, when water is added under ventilation to the filter in which the adsorption sheets of Comparative Examples 1 and 2 are folded, in Comparative Example 1, the filter ventilation resistance greatly increases before and after water is added due to deformation of the adsorption sheet. The life as a filter is shortened. In Comparative Example 2, although the airflow resistance of the filter does not change before and after water is added, the original airflow resistance of the filter is high.

本発明の吸着シートをひだ折したフィルターは、通風下における水噴霧といった過酷な環境下においても変形することがなく、フィルターとしての機能を維持することができるものであり、幅広い用途分野で使用可能である。   The filter made by folding the adsorption sheet of the present invention can be used in a wide range of applications because it can maintain its function as a filter without being deformed even under harsh environments such as water spray under ventilation. It is.

剛軟度を測定するスライド形試験機を模式図。A schematic diagram of a slide type testing machine for measuring bending resistance. 吸着シートユニット化後の耐水性評価法の模式図。The schematic diagram of the water resistance evaluation method after adsorption sheet unitization.

Claims (2)

JIS8141吸水度試験によるクレム吸水度が30mm以下であり、JIS8141の方法にて前処理し自重を測定後、通過風速0.15m/s下で2.5kg/(min/m2)の水を1分間散布し、1分間通過風速0.15m/s下で通風乾燥した後の水吸収量が自重の3倍以下であることを特徴とする吸着シート。 The Krem water absorption by the JIS 8141 water absorption test is 30 mm or less. After pre-processing by the method of JIS 8141 and measuring its own weight, 2.5 kg / (min / m 2 ) of water is passed under a passing wind speed of 0.15 m / s. An adsorbing sheet characterized in that the water absorption after spraying for 1 minute and passing and drying at a passing air velocity of 0.15 m / s for 1 minute is not more than 3 times its own weight. 請求項1記載の試験後、JISL1096B(スライド法)による最大剛軟度が10gf/cm以上であり、平均粒子径が60〜600μmの吸着材を支持部材に接着固定してなることを特徴とする請求項1記載の吸着シート。
After the test according to claim 1, an adsorbent having a maximum bending resistance of 10 gf / cm or more according to JISL1096B (slide method) and an average particle diameter of 60 to 600 μm is bonded and fixed to a support member. The adsorption sheet according to claim 1.
JP2003286098A 2003-08-04 2003-08-04 Water-resistant adsorption sheet Withdrawn JP2005052744A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003286098A JP2005052744A (en) 2003-08-04 2003-08-04 Water-resistant adsorption sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003286098A JP2005052744A (en) 2003-08-04 2003-08-04 Water-resistant adsorption sheet

Publications (1)

Publication Number Publication Date
JP2005052744A true JP2005052744A (en) 2005-03-03

Family

ID=34365517

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003286098A Withdrawn JP2005052744A (en) 2003-08-04 2003-08-04 Water-resistant adsorption sheet

Country Status (1)

Country Link
JP (1) JP2005052744A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008206550A (en) * 2007-02-23 2008-09-11 Toyobo Co Ltd Absorbent sheet
JP2020081529A (en) * 2018-11-28 2020-06-04 ロイヤルネットワーク株式会社 Exhaust heat guard device for finishing device of clothes
CN111495052A (en) * 2020-05-09 2020-08-07 朱丛江 Dust treatment water suction type discharge assembly of exhaust duct system

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6211528A (en) * 1985-07-08 1987-01-20 Toppan Printing Co Ltd Deodorizing sheet
JPS63278515A (en) * 1987-05-12 1988-11-16 Yahata Bussan Kk Fluid cleaning sheet inserted with adsorptive powder
JPH08281030A (en) * 1995-04-19 1996-10-29 Toyobo Co Ltd Filter sheet for air cleaning
JPH09209298A (en) * 1996-01-30 1997-08-12 Oji Paper Co Ltd Base paper for electrical insulating laminated board
JPH10296021A (en) * 1997-04-24 1998-11-10 Zexel Corp Deodorizing filter for vehicle air-conditioning equipment
JPH11217510A (en) * 1997-11-29 1999-08-10 Yasuhiro Miyoshi Oil-absorbing sheet composition and production of oil-absorbing sheet from the composition, oil-absorbing float, production of oil-absorbing textile, oil-absorbing mat
JP2000024426A (en) * 1998-05-08 2000-01-25 Toyobo Co Ltd Adsorption sheet, its production and air purifying filter
JP2000117024A (en) * 1998-10-09 2000-04-25 Toyobo Co Ltd Air cleaning filter
JP2000117023A (en) * 1998-10-09 2000-04-25 Toyobo Co Ltd Air cleaning filter
JP2000242065A (en) * 1999-02-23 2000-09-08 Toshiba Corp Electrophotographic recording device
JP2001070418A (en) * 1999-09-06 2001-03-21 Mitsubishi Paper Mills Ltd Water resistant photocatalyst corrugated filter
JP2002066223A (en) * 2000-08-28 2002-03-05 Mitsubishi Paper Mills Ltd Dust removing deodorization filter which is regenerated by washing with water
JP2002136815A (en) * 2000-10-31 2002-05-14 Hokuetsu Paper Mills Ltd Filter medium for air filter
JP2002273123A (en) * 2001-03-22 2002-09-24 Toyobo Co Ltd Chemical filter
JP2002346380A (en) * 2001-05-24 2002-12-03 Asahi Kasei Corp Oil adsorption sheet for grease interceptor

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6211528A (en) * 1985-07-08 1987-01-20 Toppan Printing Co Ltd Deodorizing sheet
JPS63278515A (en) * 1987-05-12 1988-11-16 Yahata Bussan Kk Fluid cleaning sheet inserted with adsorptive powder
JPH08281030A (en) * 1995-04-19 1996-10-29 Toyobo Co Ltd Filter sheet for air cleaning
JPH09209298A (en) * 1996-01-30 1997-08-12 Oji Paper Co Ltd Base paper for electrical insulating laminated board
JPH10296021A (en) * 1997-04-24 1998-11-10 Zexel Corp Deodorizing filter for vehicle air-conditioning equipment
JPH11217510A (en) * 1997-11-29 1999-08-10 Yasuhiro Miyoshi Oil-absorbing sheet composition and production of oil-absorbing sheet from the composition, oil-absorbing float, production of oil-absorbing textile, oil-absorbing mat
JP2000024426A (en) * 1998-05-08 2000-01-25 Toyobo Co Ltd Adsorption sheet, its production and air purifying filter
JP2000117024A (en) * 1998-10-09 2000-04-25 Toyobo Co Ltd Air cleaning filter
JP2000117023A (en) * 1998-10-09 2000-04-25 Toyobo Co Ltd Air cleaning filter
JP2000242065A (en) * 1999-02-23 2000-09-08 Toshiba Corp Electrophotographic recording device
JP2001070418A (en) * 1999-09-06 2001-03-21 Mitsubishi Paper Mills Ltd Water resistant photocatalyst corrugated filter
JP2002066223A (en) * 2000-08-28 2002-03-05 Mitsubishi Paper Mills Ltd Dust removing deodorization filter which is regenerated by washing with water
JP2002136815A (en) * 2000-10-31 2002-05-14 Hokuetsu Paper Mills Ltd Filter medium for air filter
JP2002273123A (en) * 2001-03-22 2002-09-24 Toyobo Co Ltd Chemical filter
JP2002346380A (en) * 2001-05-24 2002-12-03 Asahi Kasei Corp Oil adsorption sheet for grease interceptor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008206550A (en) * 2007-02-23 2008-09-11 Toyobo Co Ltd Absorbent sheet
JP2020081529A (en) * 2018-11-28 2020-06-04 ロイヤルネットワーク株式会社 Exhaust heat guard device for finishing device of clothes
CN111495052A (en) * 2020-05-09 2020-08-07 朱丛江 Dust treatment water suction type discharge assembly of exhaust duct system

Similar Documents

Publication Publication Date Title
JP4944540B2 (en) FILTER ELEMENT, MANUFACTURING METHOD THEREOF, AND USE METHOD
KR102129457B1 (en) Gas adsorbent, gas adsorbing sheet, and air filter
JP2008138300A (en) Fibrous sheet, method for producing the same, deodorant, and air filter
JP6988477B2 (en) Filter media for air purification
JP2007069198A (en) Filter medium for gas removal, composite filter and filter element
JP5082292B2 (en) Adsorbent sheet
CN111971105A (en) Wet-type nonwoven fabric for filter, filter medium for filter, and filter
JP5712598B2 (en) Air filter media and air filter
JP2013094367A (en) Air cleaning filter material
JP2008086841A (en) Gas-removing filtration medium, composite filter, and filter element
JP2013154269A (en) Filter material
JP2008206550A (en) Absorbent sheet
JP2004050151A (en) Gas purifying material
JP2015044183A (en) Filter medium for deodorization filter
JP2005052744A (en) Water-resistant adsorption sheet
JP2013220375A (en) Filter medium
JP2014100654A (en) Filter material for air cleaning, and filter unit
JP6115413B2 (en) Filter element
JP2002292227A (en) Filter unit
JP4477186B2 (en) Filter and filter member
JP6194579B2 (en) Air cleaning media
JP2019166515A (en) Air filter filter-material and air filter
CN113795323B (en) Filter medium for filter and filter
JPH11156124A (en) Honeycomb-shaped air cleaning filter
JP3767722B2 (en) Adsorbent sheet and air purification filter

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20060711

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20080523

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20091203

A761 Written withdrawal of application

Free format text: JAPANESE INTERMEDIATE CODE: A761

Effective date: 20100118