【０００１】[0001]
【産業上の利用分野】本発明は、建築物における空調設
備の空調ダクトにおいて、特に結露水の落下が問題とな
る箇所に巻回される空調ダクト用紙に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air-conditioning duct for an air-conditioning facility in a building, and more particularly to an air-conditioning duct sheet wound around a place where condensation water falls.
【０００２】[0002]
【従来の技術】ブリキやアルミニウムなどの金属板を、
断面が正方形、長方形、円形等の筒体としたダクトは建
築物の空調用の配管材として不可欠である。こうした空
調ダクトには色々な種類があるが、角形ダクト、丸ダク
ト、スパイラルダクト、フレフレキシブルスパイラルダ
クト等がよく知られている。2. Description of the Related Art Metal plates, such as tin and aluminum,
A duct having a cylindrical section having a square, rectangular, or circular cross section is indispensable as a piping material for air conditioning of a building. There are various types of such air conditioning ducts, and rectangular ducts, round ducts, spiral ducts, flexible flexible spiral ducts, and the like are well known.
【０００３】角ダクトは、金属薄板を断面正方形または
長方形の筒状体に成形したものであり、金属製のＳ型ハ
ゼによって、筒状体が長手方向に連結されている。丸ダ
クトは金属薄板を曲折して断面円形の筒状体に成形し、
金属薄板の端縁を甲ハゼにより連結したものである。フ
レキシブルスパイラルダクトは周知のように、一定巾の
金属薄板を螺旋状に巻回しながら筒状体として成型した
ものであり、図１に例示したように筒状体の強度向上と
施工性の向上を主目的に、波型のコルゲート状リブを表
面に施したものである。図１は実公平３−１７１０５号
公報に記載されたフレキシブルスパイラルダクトを示す
ものであって、所定巾の金属薄板の端縁をハゼ合わせし
ながら螺旋状の巻回した筒状体１０よりなるものであ
る。この筒状体の互いに隣接するハゼ合わせ部１１，１
１の間には数本のコルゲート状リブ１２が形成されてい
て、これによりフレキシブルスパイラルダクトは筒状体
１０の軸線方向に伸縮自在となる。空調ダクト施工時に
は収縮させたダクトを必要長さに伸長して、必要により
固定するだけでよいため、屈曲配管もでき施工がきわめ
て簡単である等の利点がある。[0003] The square duct is formed by molding a thin metal plate into a tubular body having a square or rectangular cross section, and the tubular body is connected in the longitudinal direction by a metal S-shaped goby. The round duct is formed by bending a thin metal plate into a cylindrical body with a circular cross section.
The edges of thin metal plates are connected by insteps. As is well known, a flexible spiral duct is formed by forming a metal sheet having a fixed width into a cylindrical shape while spirally winding the same, and as shown in FIG. The main purpose is to provide corrugated ribs on the surface. FIG. 1 shows a flexible spiral duct described in Japanese Utility Model Publication No. 3-17105, which is formed of a spirally wound cylindrical body 10 while fitting the edges of a thin metal plate having a predetermined width. It is. Goby mating portions 11, 1 adjacent to each other of this cylindrical body
A plurality of corrugated ribs 12 are formed between the two, and thereby the flexible spiral duct can expand and contract in the axial direction of the tubular body 10. When the air-conditioning duct is constructed, the contracted duct may be simply extended to a required length and fixed if necessary, so that there is an advantage that the pipe can be bent and the construction is extremely simple.
【０００４】ところで、このような金属薄板よりなる空
調用ダクトをビルディングの冷房用配管や、通風管の吸
入側等の空調配管等に用いた場合には、ダクト内に冷気
を通した際に、ダクト内外の温度差によって、外気に含
まれる水分がダクトの外周面に凝結し、結露水が発生す
ることが知られている。こうして発生した結露水はダク
トを腐食させ、ダクトの寿命を低下させる原因となった
り、結露水が滴下し、天井裏、壁面、床面等を汚染しシ
ミ等の原因となったり、建築物の寿命を短縮させる原因
となる。また電気配線部分に滴下すると漏電の原因とな
ったりする。[0004] By the way, when such an air-conditioning duct made of a thin metal plate is used for a cooling pipe of a building or an air-conditioning pipe such as a suction side of a ventilation pipe, when cold air is passed through the duct, It is known that moisture contained in the outside air condenses on the outer peripheral surface of the duct due to a temperature difference between the inside and outside of the duct, and condensed water is generated. The condensed water generated in this way corrodes the duct and shortens the service life of the duct, and the condensed water drips and contaminates the ceiling, the walls, the floor, etc., causing stains, etc. It causes the life to be shortened. Also, if it is dropped on the electric wiring part, it may cause an electric leakage.
【０００５】結露を防止するために、従来は、ロックウ
ールやガラスウール、発泡ウレタン樹脂、不織布等の断
熱材をダクト外面に巻き付け、テープや金属板で覆って
固着する方法等がとられていた。Conventionally, in order to prevent dew condensation, a method of winding a heat insulating material such as rock wool, glass wool, urethane foam resin, or non-woven fabric around the outer surface of the duct and covering with a tape or a metal plate and fixing the same has been adopted. .
【０００６】しかしながら、このような断熱材を空調ダ
クトに固着する方法は、施工現場において空調ダクトを
配管して固定した後に行わざるを得ず、作業が煩雑とな
ることは免れない。また狭い場所での施工が多い、手間
が掛かり危険も伴う、費用が掛かる等の問題点もあっ
た。特に、空調ダクトとして前述したようなフレキシブ
ルスパイラルダクトを用いた場合には、当該ダクトによ
る施工の簡便性と言う特長が失われてしまうこととな
る。However, such a method of fixing the heat insulating material to the air-conditioning duct must be performed after the air-conditioning duct is piped and fixed at the construction site, so that the operation is inevitably complicated. In addition, there are also problems such as a lot of construction work in a narrow place, troublesome and dangerous, and a high cost. In particular, when the above-mentioned flexible spiral duct is used as the air-conditioning duct, the feature of simplicity of construction by the duct is lost.
【０００７】また、このような断熱材を巻き付けた場合
でも、結露の発生を完全に防ぐことはきわめて困難であ
る。このため、ダクト内に冷気を通した際に、わずかな
がらダクト外面に結露水が凝結することが避けられず、
結露水は断熱材に吸収されてしまうこととなる。[0007] Even when such a heat insulating material is wound, it is extremely difficult to completely prevent the occurrence of dew condensation. For this reason, when cold air is passed through the duct, it is inevitable that condensation will condense slightly on the outer surface of the duct,
Condensed water will be absorbed by the insulation.
【０００８】ところが、これらの断熱材は一般に水分の
放散性が良好でないためと、また断熱材の外周は前述の
ようにテープや金属板でほぼ全面を被覆されているた
め、ダクトへの冷気の供給を停止した後も、吸収された
水分は放散されずに断熱材に保持されたままとなる。こ
れが原因となりダクトが腐食してしまう問題が起こる。
また、結露水は徐々に断熱材の中に蓄積されるためその
断熱効果を低下させ、さらには断熱材から結露水が滴下
し、天井裏、壁面、床面等を汚染しシミ等の原因となっ
たり、建築物の寿命を短縮させる原因となる。また電気
配線部分に滴下すると漏電の原因となったりする。However, these heat insulating materials are generally not good at dissipating moisture, and because the outer periphery of the heat insulating material is almost entirely covered with a tape or a metal plate as described above, the cooling air flowing into the duct is not circulated. Even after the supply is stopped, the absorbed water is not diffused but remains held by the heat insulating material. This causes a problem that the duct is corroded.
In addition, the dew condensation water gradually accumulates in the heat insulating material, thereby lowering the heat insulating effect.Furthermore, the dew water drops from the heat insulating material, contaminating the ceiling, the wall surface, the floor surface, etc., causing stains and the like. Or shorten the life of the building. Also, if it is dropped on the electric wiring part, it may cause an electric leakage.
【０００９】また、前記フレキシブルスパイラルダクト
に断熱材を巻き付けた場合には、断熱材と筒状体に形成
されたコルゲート状リブとの間に隙間ができてしまうこ
とは避けられない。そして、このような隙間に上記断熱
材に吸収された水分が滞留してダクトの腐食を促進して
しまうおそれがあった。When a heat insulating material is wound around the flexible spiral duct, it is inevitable that a gap is formed between the heat insulating material and the corrugated rib formed in the cylindrical body. Then, there is a possibility that the moisture absorbed by the heat insulating material stays in such gaps to accelerate the corrosion of the duct.
【００１０】結露による弊害は、結露水が滴下して天井
裏等を汚染すること等により起こることは前述の通りで
ある。すなわち結露が生じても結露水が滴下しなければ
これらの弊害は起こらないこととなる。本発明者らは、
結露水を何等かの方法で吸収してしまえば滴下は起こら
なくなるとの発想のもとで種々検討を行い、特願平４−
１２０２９３号で「空調ダクト用紙及びこれを使用した
空調ダクト」の提案を行った。As described above, the adverse effects of dew condensation are caused by, for example, condensed water dripping and contaminating the ceiling and the like. That is, even if dew condensation occurs, these adverse effects do not occur unless the dew water drops. We have:
Various studies were conducted based on the idea that dripping would not occur if the dew water was absorbed by any method.
No. 120293 proposed "Air Conditioning Duct Paper and Air Conditioning Ducts Using It".
【００１１】上記出願の空調ダクト用紙は、製紙用パル
プから抄造され、耐水強度が０．３ｋｇｆ／１５ｍｍ以
上、水滴落下限界能力値が４５ｇ／ｍ2以上、および坪
量が４０〜５０００ｇ／ｍ2であることを特徴とする。
このような用紙を空調ダクトの外面に取り付けること
で、結露した水は用紙に吸収され保持されるので、滴下
することを防止できる。空調機稼働後はダクト周辺の雰
囲気の温度、湿度が低下するに従い吸収された水は用紙
から蒸発する。The air-conditioning duct paper of the above application is made from pulp for papermaking, has a water resistance of 0.3 kgf / 15 mm or more, a water drop falling capacity value of 45 g / m 2 or more, and a basis weight of 40 to 5000 g / m 2. It is characterized by the following.
By attaching such a sheet to the outer surface of the air conditioning duct, dewed water is absorbed and held by the sheet, so that dripping can be prevented. After the operation of the air conditioner, the absorbed water evaporates from the paper as the temperature and humidity of the atmosphere around the duct decrease.
【００１２】空調ダクトは使用する場所により、難燃性
を要求されることがある。前記出願では難燃性を付与し
た空調ダクト用紙の提案も行ったが、より高度の難燃性
を要求される場合が出てきた。また、その他の性能もよ
り向上する必要が出てきた。[0012] The air-conditioning duct may be required to have flame retardancy depending on the place where it is used. In the above-mentioned application, an air-conditioning duct paper provided with flame retardancy was also proposed. However, there have been cases where higher flame retardancy is required. In addition, other performance needs to be further improved.
【００１３】[0013]
【発明が解決しようとする課題】即ち、本発明が解決し
ようとする課題は、下記に述べるように諸性能をより向
上した空調ダクト用紙を開発することにある。 １）難燃性があり、燃焼後の灰の形状保持性に優れるこ
と。 ２）弱塩基性を示し、中和剤としての効果があること。
こうすることでダクトを構成する金属の腐食を防止する
ことができる。 ３）吸水量が多く、水の保持性に優れること。 ４）吸湿、放湿性に優れること。 ５）成型加工適性に優れること。That is, the problem to be solved by the present invention is to develop an air-conditioning duct sheet with further improved various performances as described below. 1) It has flame retardancy and is excellent in shape retention of ash after burning. 2) It shows weak basicity and has an effect as a neutralizing agent.
By doing so, corrosion of the metal constituting the duct can be prevented. 3) A large amount of water absorption and excellent water retention. 4) Have excellent moisture absorption and release properties. 5) Being excellent in molding workability.
【００１４】[0014]
【課題を解決するための手段】本発明者らは前述したよ
うに先に特願平４−１２０２９３号の特許出願を行っ
た。これにはパルプに自己消火性のある無機粉体や、吸
放湿性のある無機粉体を添加する技術を開示している。
本発明者はさらにこれら無機粉体の種類及び添加量を変
化させて子細に検討した結果、次のような結果を得た。The present inventors previously filed a patent application for Japanese Patent Application No. 4-120293 as described above. This discloses a technique in which a self-extinguishing inorganic powder or a moisture absorbing / releasing inorganic powder is added to pulp.
The present inventor further studied the present invention by changing the types and amounts of these inorganic powders, and obtained the following results.
【００１５】１）セピオライトを紙に高充填していく
と、吸水量は低下して行くが２０℃、６５％ＲＨ環境下
での乾燥速度は他の粉体より早い。 ２）セピオライト混抄紙は水滴拡散速度がいちばん小さ
い。これは結露水を吸収した場合、ダクトの下部への過
剰な水の移動を防止し、天井等へ水滴が落下し難くなる
ことを示す。 ３）用紙の難燃化には水酸化アルミニウムとセピオライ
トの混抄が良い。これは加熱時に２００〜４００℃の温
度で水酸化アルミニウムの結晶水が放出されると、一時
的にセピオライトがその水を自分自身の結晶構造中に取
り込み、その結果セピオライト自身の結晶水の放出温度
（３００〜５００℃）までに発火点を上昇させるためと
推定した。 ４）セピオライトは乾燥固結性があるため、高充填化し
ても紙力の低下が少ない。 ５）セピオライトは弱塩基性であるため、酸を中和する
働きに優れ、防錆効果に優れる。このことは金属製のダ
クトの腐食を防止できる利点につながる。1) When paper is filled with sepiolite at a high level, the amount of water absorption decreases, but the drying rate in a 20 ° C., 65% RH environment is faster than other powders. 2) Sepiolite mixed paper has the lowest water droplet diffusion rate. This indicates that, when the dew condensation water is absorbed, excessive movement of water to the lower part of the duct is prevented, and it is difficult for water droplets to fall to the ceiling or the like. 3) Mixing aluminum hydroxide and sepiolite is good for making the paper flame-retardant. This is because when crystallization water of aluminum hydroxide is released at a temperature of 200 to 400 ° C. during heating, sepiolite temporarily incorporates the water into its own crystal structure, and as a result, the release temperature of the crystallization water of sepiolite itself (300 to 500 ° C.). 4) Sepiolite has a dry-consolidation property, so that even if it is highly filled, a decrease in paper strength is small. 5) Since sepiolite is weakly basic, it is excellent in neutralizing acids and excellent in rust prevention. This leads to the advantage of preventing corrosion of the metal duct.
【００１６】本発明者らはこれらの知見を得、ついに本
発明を完成させたものである。即ち本発明は、セルロー
ス繊維を主体とする繊維１０〜３５重量％と無機粉体が
９０〜６５重量％の混合物からなり、無機粉体の１０〜
４０重量％がセピオライトで構成される混合物１００重
量部に対してサイズ剤０．２〜３重量部、有機結合剤２
〜１０重量部、湿潤紙力増強剤０．２〜２重量部、定着
剤０．０２〜１重量部を添加して抄造された坪量１５０
〜７５０ｇ／ｍ2、耐水強度が０．３ｋｇｆ／１５ｍｍ
以上、水滴落下限界能力値が７０〜１０００ｇ／ｍ2で
あることを特徴とする空調ダクト用紙である。なお本発
明では種々の使用材料の歩留りはいずれも１００％とし
て示してあり、重量部、重量％、ｇ／ｍ2はいずれも乾
燥換算で示してある。The present inventors have obtained these findings and have finally completed the present invention. That is, the present invention comprises a mixture of 10 to 35% by weight of a fiber mainly composed of cellulose fiber and 90 to 65% by weight of an inorganic powder.
0.2 to 3 parts by weight of a sizing agent and 100 parts by weight of an organic binder 2 per 100 parts by weight of a mixture composed of 40% by weight of sepiolite
10 to 10 parts by weight, 0.2 to 2 parts by weight of a wet strength agent, and 0.02 to 1 part by weight of a fixing agent.
~ 750g / m2, water resistance 0.3kgf / 15mm
As described above, the air-conditioning duct paper is characterized in that the water droplet dropping limit capacity value is 70 to 1000 g / m2. In the present invention, the yields of various materials used are all shown as 100%, and all parts by weight, weight% and g / m2 are shown on a dry basis.
【００１７】本発明で使用するセルロース繊維として
は、通常、針葉樹未晒クラフトパルプ（ＮＵＫＰ）、針
葉樹晒クラフトパルプ（ＮＢＫＰ），広葉樹晒クラフト
パルプ（ＬＢＫＰ），針葉樹晒サルファイトパルプ（Ｎ
ＢＳＰ）、などの木材パルプが使用され、これを主体に
して必要により、麻、木綿、ワラパルプ、靱皮繊維、合
成繊維、ＰＶＡ系繊維状バインダー、さらにはガラス繊
維，ロックウール，シリカ・アルミナシリケート繊維，
アルミナ繊維，ジルコニア繊維，チタン酸カルシウム繊
維等の無機繊維等を適宜混合することもできる。As the cellulose fibers used in the present invention, softwood unbleached kraft pulp (NUKP), softwood bleached kraft pulp (NBKP), hardwood bleached kraft pulp (LBKP), softwood bleached sulphite pulp (N
Wood pulp such as BSP) is used, and hemp, cotton, straw pulp, bast fiber, synthetic fiber, PVA-based fibrous binder, glass fiber, rock wool, silica / alumina silicate fiber are mainly used as necessary. ,
Inorganic fibers such as alumina fiber, zirconia fiber and calcium titanate fiber may be appropriately mixed.
【００１８】本発明ではセルロース繊維を主体とする繊
維１０〜３５重量％と無機粉体が９０〜６５重量％の混
合物からなるが、無機粉体の１０〜４０重量％がセピオ
ライトであることが必要である。セピオライトは化学式
Ｍｇ8Ｓｉ12Ｏ30（ＯＨ2）4・６〜８Ｈ2Ｏで示され、一
般には繊維性を持ったケイ酸マグネシウムとして入手で
きる。無機粉体の量が９０重量％を越えると、用紙の物
理的強度が不足するので好ましくなく、６５重量％以下
であると、高度な難燃性を付与することが出来ない。
又、セピオライトを無機粉体の４０重量％を越えて使用
すると、燃焼後の灰の形状保持性等は優れたものになる
が、ダクト用紙の抄造時に抄紙用金網からの脱水速度が
遅くなり、生産効率を著しく低下させ、かつ高坪量の紙
の製造に支障を来すことになる。更に１０重量％以下で
使用すると、生産効率は向上するが、前述した特性を失
ってしまうので好ましくない。In the present invention, a mixture of 10 to 35% by weight of a fiber mainly composed of cellulose fiber and 90 to 65% by weight of an inorganic powder is required, but it is necessary that 10 to 40% by weight of the inorganic powder is sepiolite. It is. Sepiolite is represented by the chemical formula Mg8Si12O30 (OH2) 4.6-8H2O, and is generally available as fibrous magnesium silicate. If the amount of the inorganic powder exceeds 90% by weight, the physical strength of the paper becomes insufficient, which is not preferable. If the amount is less than 65% by weight, high flame retardancy cannot be imparted.
When sepiolite is used in an amount exceeding 40% by weight of the inorganic powder, the shape retention of the ash after combustion becomes excellent, but the rate of dehydration from the papermaking wire mesh during the papermaking of duct paper becomes slow. This significantly reduces production efficiency and hinders the production of high basis weight paper. Further, when used at 10% by weight or less, the production efficiency is improved, but the above-mentioned characteristics are lost, which is not preferable.
【００１９】本発明ではこの混合物１００重量部に対し
てサイズ剤を０．２〜３重量部添加する。使用可能なサ
イズ剤は、強化ロジンサイズ剤、エマルション型ロジン
サイズ剤、合成サイズ剤、合成樹脂サイズ剤等の酸性抄
紙用サイズ剤やアルキルケテンダイマーサイズ剤、アル
ケニル無水コハク酸サイズ剤、カチオンポリマー型サイ
ズ剤等の中性抄紙用サイズ剤のいずれも使用出来るが、
特に硫酸バンドを定着剤として使用しない中性抄紙用の
内添サイズ剤が望ましい。添加量は、０．２重量％以下
だとサイズ度が出にくいし、３重量％以上添加してもサ
イズ度は向上しないので、０．２〜３重量％が望まし
い。In the present invention, 0.2 to 3 parts by weight of a sizing agent is added to 100 parts by weight of the mixture. Usable sizing agents include reinforced rosin sizing agents, emulsion-type rosin sizing agents, synthetic sizing agents, sizing agents for acidic paper such as synthetic resin sizing agents, alkyl ketene dimer sizing agents, alkenyl succinic anhydride sizing agents, and cationic polymer sizing agents. Any neutral paper sizing agent such as sizing agent can be used,
In particular, an internal sizing agent for neutral papermaking that does not use a sulfuric acid band as a fixing agent is desirable. If the addition amount is 0.2% by weight or less, the sizing degree is difficult to be obtained, and if the addition amount is 3% by weight or more, the sizing degree is not improved.
【００２０】本発明に使用される有機結合剤としては、
ＳＢＲ、ＭＢＲ等の合成ゴムラテックス、アクリルエマ
ルション、酢酸ビニルエマルション、エチレン酢ビエマ
ルション、塩化ビニルエマルション、塩化ビニリデンエ
マルション、及びこれらの共重合エマルション等、澱
粉、ポリビニルアルコール等々を適宜組み合わせて添加
するが、難燃性や水滴落下限界能力値を低下させずに、
かつ所望の物理的強度を得る為には、１００重量部に対
して固形分で、２〜１０重量部を添加することが望まし
い。The organic binder used in the present invention includes:
SBR, synthetic rubber latex such as MBR, acrylic emulsion, vinyl acetate emulsion, ethylene acetic acid bi-emulsion, vinyl chloride emulsion, vinylidene chloride emulsion, and copolymer emulsions thereof, starch, polyvinyl alcohol, etc. are added in appropriate combination, Without lowering the flame retardancy and water drop limit capability
In addition, in order to obtain a desired physical strength, it is desirable to add 2 to 10 parts by weight as a solid content to 100 parts by weight.
【００２１】湿潤紙力増強剤としては、メラミン樹脂、
尿素樹脂、ポリアミド・エピクロルヒドリン樹脂、ポリ
アクリルアミド系樹脂等の公知の湿潤紙力増強剤がいず
れも使用でき、０．３ｋｇｆ／１５ｍｍ以上の耐水強度
を出すために必要な量が添加される。通常、パルプ絶乾
重量に対して０．２〜２重量％の範囲で湿潤紙力増強剤
を添加する。As the wet paper strength enhancer, melamine resin,
Any known wet paper strength enhancer such as a urea resin, a polyamide / epichlorohydrin resin, and a polyacrylamide-based resin can be used, and an amount necessary for obtaining a water resistance of 0.3 kgf / 15 mm or more is added. Usually, a wet strength agent is added in the range of 0.2 to 2% by weight based on the absolute dry weight of the pulp.
【００２２】本発明においては、前述のセルロース繊維
を主体とする繊維に無機粉体を定着剤を用いて定着させ
る。定着剤としては、ポリアクリルアミド類、変性ポリ
アクリルアミド類、ポリアクリル酸ソーダ類、アクリル
アミド・アクリル酸ソーダ共重合物、ポリエチレングリ
コール類等の高分子凝集剤、硫酸アルミニウム、塩化ア
ルミニウム等のアルミニウム塩類、塩化第二鉄、硝酸第
二鉄等の第二鉄塩類、ポリエチレンイミン、ポリエピク
ロルヒドリン等、公知の凝集剤や定着剤が適宜１種以上
使用できる。定着剤の使用量は０．０２〜１重量部が好
適である。In the present invention, an inorganic powder is fixed to the above-mentioned fibers mainly composed of cellulose fibers using a fixing agent. Examples of the fixing agent include polyacrylamides, modified polyacrylamides, sodium polyacrylate, copolymers of acrylamide and sodium acrylate, polymer flocculants such as polyethylene glycols, aluminum salts such as aluminum sulfate and aluminum chloride, and chlorides. One or more known coagulants and fixing agents such as ferric salts such as ferric and ferric nitrate, polyethyleneimine, and polyepichlorohydrin can be used as appropriate. The amount of the fixing agent used is preferably 0.02 to 1 part by weight.
【００２３】さらに本発明では、セピオライト以外の無
機粉体が水酸化アルミニウムであり、その含有量が無機
粉体の９０〜６０重量％であることが好ましい。水酸化
アルミニウムの含有量は、多ければ多いほど高度な難燃
性が得られるが、燃焼後の灰の形状保持性は９０重量％
を越えると著しく低下する。６０重量％以下であると前
述の抄紙上の理由により不適となる。Further, in the present invention, the inorganic powder other than sepiolite is aluminum hydroxide, and its content is preferably 90 to 60% by weight of the inorganic powder. The higher the content of aluminum hydroxide, the higher the flame retardancy is obtained, but the shape retention of the ash after burning is 90% by weight.
If it exceeds, it will decrease significantly. If it is less than 60% by weight, it is unsuitable for the above-mentioned papermaking reasons.
【００２４】抄紙するに際しては、セルロース繊維に無
機填料、サイズ剤、有機結合剤、湿潤紙力増強剤、定着
剤、必要に応じてその他の副資材を適宜添加し、通常フ
リーネス３００〜６２０ｍｌ Ｃ．Ｓ．Ｆ．で円網抄紙
機、長網抄紙機等を使用して常法により坪量１５０〜７
５０ｇ／ｍ2、水滴落下限界能力値が７０〜１０００ｇ
／ｍ2で抄紙する。In papermaking, an inorganic filler, a sizing agent, an organic binder, a wet paper strength enhancer, a fixing agent, and if necessary, other auxiliary materials are appropriately added to the cellulose fiber, and usually 300 to 620 ml of freeness. S. F. Using a round paper machine, fourdrinier paper machine, etc., in the usual manner, with a basis weight of 150 to 7
50 g / m 2, water drop limit capability 70-1000 g
/ M2.
【００２５】本発明ではこのようにして抄造した原紙に
対して難燃化剤を含浸させることもできる。含浸は抄紙
機上（即ちオンマシン加工）のサイズプレス装置やビル
ブレードコーター、ゲートロールコーター等で行う。含
浸させる難燃剤としては、スルファミン酸グアニジン、
リン酸グアニジン、スルファミン酸アンモニウム、縮合
リン酸アルキルエステル誘導体、硫酸グアニジン、リン
酸アンモニウム、硫酸アンモニウム、等の水溶液もしく
は水に分散が可能なものを使用することができる。また
これに、澱粉、サイズ剤、染料等の製紙用副資材やジシ
アンジアミド，メラミンのメチロール化物，ジシアンジ
アミドのメチロール化物等の耐熱助剤を併用してもよ
い。含浸量は対原紙重量の５〜１５重量％が望ましい。
５重量％以下だと難燃効果が乏しく、１５重量％以上で
あると燃焼時の発煙量が多くなりすぎて好ましくない。In the present invention, the base paper thus formed can be impregnated with a flame retardant. The impregnation is performed by a size press device on a paper machine (that is, on-machine processing), a bill blade coater, a gate roll coater, or the like. As the flame retardant to be impregnated, guanidine sulfamate,
Guanidine phosphate, ammonium sulfamate, a condensed phosphoric acid alkyl ester derivative, guanidine sulfate, ammonium phosphate, ammonium sulfate, and the like that can be dispersed in an aqueous solution or water can be used. Further, a paper-making auxiliary material such as starch, a sizing agent and a dye, and a heat-resistant auxiliary such as dicyandiamide, a methylol compound of melamine, and a methylol compound of dicyandiamide may be used in combination. The impregnation amount is desirably 5 to 15% by weight based on the weight of the base paper.
If it is less than 5% by weight, the flame-retardant effect is poor, and if it is more than 15% by weight, the amount of smoke generated during combustion becomes too large, which is not preferable.
【００２６】さらに必要に応じて、用紙の表面、裏面あ
るいは表裏両面に水酸化アルミニウムとバインダーを主
体とする塗工液を塗工してもよい。これらの加工は、原
紙を抄造後（即ちオフマシン加工）に行ってもよい。こ
の加工によりダクト成型時の成型性や難燃性、印刷適性
等を向上できる。Further, if necessary, a coating liquid mainly composed of aluminum hydroxide and a binder may be coated on the front surface, the back surface, or both the front and back surfaces of the paper. These processes may be performed after the base paper is made (ie, off-machine processing). By this processing, moldability, flame retardancy, printability and the like at the time of duct molding can be improved.
【００２７】かくして抄造された用紙は、本発明の空調
ダクト用紙として要求される優れた水滴落下限界能力
値、耐水性、強度、成形性、結露水の放散性、断熱性、
難燃性、燃焼後の形状保持性等を具備したものとなる。The paper thus formed has excellent water drop limit capability, water resistance, strength, moldability, dew condensation water dissipation, heat insulation, and the like, which are required as the air conditioning duct paper of the present invention.
It has flame retardancy, shape retention after burning, and the like.
【００２８】[0028]
実施例１ ＮＢＫＰ１０重量部を叩解し、フリーネス４００ｍｌ
Ｃ．Ｓ．Ｆに調整した。これに水酸化アルミニウム（商
品名［Ｂ−１５３］、日本軽金属（株）製）８１重量部
及びセピオライト（商品名［セピオライトＴＭ］水沢化
学工業（株）製造）９重量部を混合し、耐水化剤（商品
名［エピノックスＰ−１３０］、ディックハーキュレス
（株）製造）１重量部、サイズ剤（商品名［サイズパイ
ンＫ−９０２］、荒川化学工業（株）製造）０．３重量
部、塩化ビニリデンエマルション（商品名［サランＸ−
１０６］、旭化成（株）製造）３重量部、定着剤（商品
名［ハイホルダー３５１］、栗田工業（株）製造）０．
０５重量部を加え、長網抄紙機を使用して常法により坪
量１６０ｇ／ｍ2のダクト用紙を抄造した。Example 1 10 parts by weight of NBKP was beaten and 400 ml of freeness was used.
C. S. Adjusted to F. To this, 81 parts by weight of aluminum hydroxide (trade name [B-153], manufactured by Nippon Light Metal Co., Ltd.) and 9 parts by weight of sepiolite (trade name [Sepiolite TM] manufactured by Mizusawa Chemical Industry Co., Ltd.) were mixed to obtain water resistance. 1 part by weight of agent (trade name [Epinox P-130], manufactured by Dick Hercules Co., Ltd.), 0.3 part by weight of sizing agent (trade name [Size Pine K-902], manufactured by Arakawa Chemical Industry Co., Ltd.), chloride Vinylidene emulsion (trade name [Saran X-
106], 3 parts by weight, a fixing agent (trade name [High Holder 351], manufactured by Kurita Industry Co., Ltd.)
After adding 05 parts by weight, duct paper having a basis weight of 160 g / m 2 was formed by a conventional method using a fourdrinier paper machine.
【００２９】実施例２ ＮＢＫＰ１０重量部を叩解し、フリーネス４００ｍｌ
Ｃ．Ｓ．Ｆに調整した。これに実施例１と同様な水酸化
アルミニウム５４重量部とセピオライト３６重量部を添
加混合した後、実施例１と同様なる薬剤を加え、常法に
より坪量７４０ｇ／ｍ2のダクト用紙を得た。Example 2 NBKP (10 parts by weight) was beaten to obtain a freeness of 400 ml.
C. S. Adjusted to F. After adding and mixing 54 parts by weight of aluminum hydroxide and 36 parts by weight of sepiolite as in Example 1, the same agent as in Example 1 was added, and duct paper having a basis weight of 740 g / m2 was obtained by a conventional method.
【００３０】実施例３ ＮＢＫＰ３０重量部を叩解し、フリーネス４００ｍｌ
Ｃ．Ｓ．Ｆに調製した。これに水酸化アルミニウム（商
品名「Ｂ−１５３」、日本軽金属（株）製）５０重量部
および、セピオライト（商品名「セピオライトＴＭ」水
沢化学工業（株）製造）２０重量部を混合し、サイズ剤
（商品名「サイズパインＫ−９０２」、荒川化学工業
（株）製造）０．３重量部、湿潤紙力増強剤剤（商品名
「エピノックスＰ−１３０」、ディックハーキュレス
（株）製）１重量部、塩化ビニリデンエマルジョン（商
品名「サランＸ−１０６」、旭化成（株）製造）５重量
部、定着剤（商品名「ハイホルダー３５１」、栗田工業
（株）製）０．０５重量部を加え、長網抄紙機を使用し
て常法により５００ｇ／ｍ2の原紙を抄造した。抄造途
中のサイズプレス装置により難燃剤（商品名「リン酸グ
アニジン」、チッソ（株）製造）を５０ｇ／ｍ2含浸さ
せた。Example 3 30 parts by weight of NBKP was beaten and 400 ml of freeness was obtained.
C. S. F. This was mixed with 50 parts by weight of aluminum hydroxide (trade name "B-153", manufactured by Nippon Light Metal Co., Ltd.) and 20 parts by weight of sepiolite (trade name "Sepiolite TM" manufactured by Mizusawa Chemical Industry Co., Ltd.) to obtain a size. 0.3 parts by weight (trade name “Size Pine K-902”, manufactured by Arakawa Chemical Industry Co., Ltd.), wet paper strength agent (trade name “Epinox P-130”, manufactured by Dick Hercules Co., Ltd.) 1 Parts by weight, 5 parts by weight of vinylidene chloride emulsion (trade name "Saran X-106", manufactured by Asahi Kasei Corporation), and 0.05 parts by weight of fixing agent (trade name "High Holder 351", manufactured by Kurita Industry Co., Ltd.) In addition, a base paper of 500 g / m 2 was formed by a conventional method using a fourdrinier paper machine. A flame retardant (trade name “guanidine phosphate”, manufactured by Chisso Corporation) was impregnated with 50 g / m 2 by a size press device during the papermaking.
【００３１】実施例４ ＮＢＫＰ３５重量部を叩解し、フリーネス４３０ｍｌ
Ｃ．Ｓ．Ｆに調整した。これに実施例１と同じ水酸化ア
ルミニウム５８．５重量部とセピオライト６．５重量部
を添加混合した後、塩化ビニリデンエマルション（商品
名［サランＸ−１０６］、旭化成（株）製造）７重量部
を加え、他は実施例１と同量・同薬剤を加え、常法によ
り坪量１５５ｇ／ｍ2のダクト用紙を得た。Example 4 NBKP (35 parts by weight) was beaten to obtain a freeness of 430 ml.
C. S. Adjusted to F. After adding and mixing 58.5 parts by weight of aluminum hydroxide and 6.5 parts by weight of sepiolite as in Example 1, 7 parts by weight of vinylidene chloride emulsion (trade name [Saran X-106], manufactured by Asahi Kasei Corporation) And the same amounts and the same chemicals as in Example 1 were added to obtain duct paper having a basis weight of 155 g / m 2 by a conventional method.
【００３２】実施例５ 前記実施例４のうち、水酸化アルミニウム３９重量部と
セピオライト２６重量部に変えて、実施例４と同様なる
方法で坪量７４５ｇ／ｍ2のダクト用紙を得た。Example 5 Duct paper having a basis weight of 745 g / m 2 was obtained in the same manner as in Example 4, except that 39 parts by weight of aluminum hydroxide and 26 parts by weight of sepiolite were used.
【００３３】比較例１ ＮＢＫＰ４０重量部を叩解し、フリーネス４２０ｍｌ
Ｃ．Ｓ．Ｆに調整した。これに実施例１と同じ薬品を用
いて、水酸化アルミニウム５５重量部、セピオライト５
重量部を加え、更にサイズパインＫ−９０２を０．３重
量部、サランＸ−１０６を１５重量部、エピノックスＰ
−１３０を１重量部、ハイホルダー３５１を０．０５重
量部添加した後、常法により１２０ｇ／ｍ2のダクト用
紙を得た。Comparative Example 1 40 parts by weight of NBKP were beaten and freeness was 420 ml.
C. S. Adjusted to F. Using the same chemicals as in Example 1, 55 parts by weight of aluminum hydroxide, sepiolite 5
Parts by weight, 0.3 parts by weight of size pine K-902, 15 parts by weight of Saran X-106, and Epinox P
After adding 1 part by weight of -130 and 0.05 part by weight of the high holder 351, duct paper of 120 g / m 2 was obtained by a conventional method.
【００３４】比較例２ 比較例１と全く同様なる方法で、坪量８００ｇ／ｍ2の
ダクト用紙を得た。Comparative Example 2 Duct paper having a basis weight of 800 g / m 2 was obtained in exactly the same manner as in Comparative Example 1.
【００３５】比較例３ 比較例１と同じ材料を用いて、ＮＢＫＰ７重量部、水酸
化アルミニウム４３重量部、セピオライト５０重量部
に、サイズパインＫ−９０２を０．３重量部、サランＸ
−１０６を１０重量部、エピノックスＰ−１３０を１重
量部、ハイホルダー３５１を０．０５重量部を加え、常
法により８１０ｇ／ｍ2のダクト用紙を得た。Comparative Example 3 Using the same materials as in Comparative Example 1, 7 parts by weight of NBKP, 43 parts by weight of aluminum hydroxide, 50 parts by weight of sepiolite, 0.3 parts by weight of size pine K-902, Saran X
Then, 10 parts by weight of -106, 1 part by weight of Epinox P-130, and 0.05 part by weight of High Holder 351 were added to obtain 810 g / m 2 of duct paper by a conventional method.
【００３６】各用紙の構成、及び評価結果を表１に示
す。坪量はＪＩＳ Ｐ８１２４、耐水強度はＪＩＳ Ｐ
８１３５に規定する方法で測定した。抄紙性は長網抄紙
機を使用して抄紙した際の抄紙網上の紙匹の脱水性を目
視により判断し、５点法で評価した。３点以上が実用上
問題の無い範囲である。水滴落下限界能力値は、Ｗａ
（ｇ／ｍ2）の絶乾した紙の試験片を水に浸漬し、４時
間後に引き上げてこれを垂直に吊し、試験片表面に付着
した過剰水の滴下が終了した後秤量してこの重量をＷｂ
（ｇ／ｍ2）とし、絶乾紙単位面積当りの飽和吸収水量
を計算した（即ち、水滴落下限界能力値は［Ｗｂ−Ｗ
ａ］（ｇ／ｍ2）により定義される）。Table 1 shows the structure of each sheet and the evaluation results. Basis weight is JIS P8124, water resistant strength is JIS P
It was measured by the method specified in 8135. The papermaking property was determined by visually observing the dewatering property of the paper web on the papermaking net when making the papermaking using a fourdrinier paper machine, and evaluated by a five-point method. Three or more points are in the range where there is no practical problem. The water drop limit capability value is Wa
(G / m 2) of a test piece of absolutely dried paper was immersed in water, pulled up after 4 hours, suspended vertically, and weighed after dripping of excess water adhering to the test piece surface was completed. To Wb
(G / m 2), and the saturated absorbed water amount per unit area of the absolutely dried paper was calculated (that is, the water drop falling limit value was [Wb-W
a] (defined by g / m2)).
【００３７】さらに、ドライラミネーション法によりポ
リウレタン系接着剤を５ｇ／ｍ2使用して、各用紙を厚
さ１２０μｍのアルミニウム薄板に貼合し、用紙を貼合
したアルミニウム薄板について、ＪＩＳ Ａ １３２１
に基づく難燃性を評価した。また目視と触診により灰の
形状保持性を５点法で評価した。３点以上が実用上問題
の無い範囲である。Further, each paper was bonded to a 120 μm-thick aluminum thin plate by a dry lamination method using a polyurethane-based adhesive at 5 g / m 2, and the aluminum thin plate to which the paper was bonded was subjected to JIS A 1321.
Was evaluated for flame retardancy. The shape retention of the ash was visually evaluated and palpated by a five-point method. Three or more points are in the range where there is no practical problem.
【００３８】さらに、用紙を貼合したアルミニウム薄板
を用い、フレキシブルスパイラルダクト製造機で、筒の
直径１６０ｍｍ、コルゲート状リブの間隔７ｍｍ、リブ
の山の高さ３ｍｍに成形しダクト成型加工性を５点法で
評価した。３点以上が実用上問題の無い範囲である。Further, using a thin aluminum sheet on which paper was bonded, a flexible spiral duct manufacturing machine was used to form a cylinder having a diameter of 160 mm, a corrugated rib interval of 7 mm, and a rib peak height of 3 mm, and a duct formability of 5 mm. It was evaluated by the point method. Three or more points are in the range where there is no practical problem.
【００３９】結露防止性は、温度２２〜３０℃、湿度５
０〜７０％に変化させた可変空調室で、ダクト内に温度
１４℃の冷気を連続的に流し、表面に結露する結露水の
状態や水滴の落下の有無を観察した。観察時間は最大３
時間である。５点法により評価し、３点以上が実用上問
題の無い範囲である。The anti-condensing properties are as follows: temperature 22 to 30 ° C., humidity 5
In a variable air-conditioning room where the temperature was changed to 0 to 70%, cold air at a temperature of 14 ° C. was continuously flown in the duct, and the condition of dew condensation water condensed on the surface and the presence or absence of water droplets were observed. Up to 3 observation times
Time. Evaluation was made by a five-point method, and three or more points were in a range where there was no practical problem.
【００４０】各実施例及び比較例の構成、及び評価結果
を表１に示す。Table 1 shows the structures and evaluation results of the examples and comparative examples.
【００４１】[0041]
【表１】[Table 1]
【００４２】表１から明らかのように、本発明の実施例
１〜５の用紙は灰の形状保持性に優れ、またいずれも結
露防止性およびダクト成型加工性ともに良好であったの
に対し、パルプ比率が多く、有機結合剤の添加量も多い
比較例１においては水滴落下限界能力値が７０ｇ／ｍ2
に達せず、灰の形状保持性が悪い。また、坪量が７５０
ｇ／ｍ2を越える比較例２ではダクト成型加工性も悪い
ことが判る。また、無機粉体の比率が９０重量％を越え
る比較例３ではダクト成型加工性が悪いことが判る。As is clear from Table 1, the papers of Examples 1 to 5 of the present invention were excellent in the shape retention of ash, and were excellent in both dew condensation prevention and duct moldability. In Comparative Example 1 in which the pulp ratio was large and the amount of the organic binder added was large, the water droplet dropping limit value was 70 g / m 2.
And the shape retention of the ash is poor. In addition, the basis weight is 750
It can be seen that in Comparative Example 2 exceeding g / m 2, duct moldability was poor. In Comparative Example 3 in which the ratio of the inorganic powder exceeds 90% by weight, the duct moldability is found to be poor.
【００４３】[0043]
【発明の効果】以上説明したように本発明の難燃性に優
れた空調ダクト用紙は構成され下記に述べるような顕著
な効果が得られる。 １）難燃性があり、燃焼後の灰の形状保持性に優れる。 ２）用紙は弱塩基性を示す。これによりダクトを構成す
る金属の腐食を防止することができる。 ３）吸水量が多く、水の保持性に優れる。 ４）吸湿、放湿性に優れる。 ５）セピオライトを併用することで、有機結合剤の定着
を向上させ、用紙の強度は向上し、廃水の負荷を低減さ
せる。 ６）セピオライトは抄造時の泡立ちを防止する効果に優
れる。 ７）成型加工性に優れた用紙が得られる。As described above, the air-conditioning duct paper having excellent flame retardancy of the present invention is constituted, and the following remarkable effects can be obtained. 1) It has flame retardancy and is excellent in shape retention of ash after burning. 2) Paper shows weak basicity. Thereby, corrosion of the metal constituting the duct can be prevented. 3) High water absorption and excellent water retention. 4) Excellent moisture absorption and release properties. 5) By using sepiolite in combination, the fixation of the organic binder is improved, the strength of the paper is improved, and the load on the wastewater is reduced. 6) Sepiolite is excellent in preventing foaming during papermaking. 7) Paper with excellent moldability can be obtained.
【図１】 断面長方形の角ダクトの連結部分を示す一部
破断斜視図である。FIG. 1 is a partially broken perspective view showing a connecting portion of a rectangular duct having a rectangular cross section.
１０ 螺旋状に巻回した筒状体 １１ ハゼ合わせ部 １２ コルゲート状リブ DESCRIPTION OF SYMBOLS 10 Tubular body wound spirally 11 Goby fitting part 12 Corrugated rib
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5240404AJP2965833B2 (en) | 1993-08-31 | 1993-08-31 | Air-conditioning duct paper with excellent flame retardancy |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5240404AJP2965833B2 (en) | 1993-08-31 | 1993-08-31 | Air-conditioning duct paper with excellent flame retardancy |
| Publication Number | Publication Date |
|---|---|
| JPH0770992A JPH0770992A (en) | 1995-03-14 |
| JP2965833B2true JP2965833B2 (en) | 1999-10-18 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5240404AExpired - Fee RelatedJP2965833B2 (en) | 1993-08-31 | 1993-08-31 | Air-conditioning duct paper with excellent flame retardancy |
| Country | Link |
|---|---|
| JP (1) | JP2965833B2 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2155320B1 (en)* | 1998-02-16 | 2001-12-01 | Guerrero Felix Canada | A NEW COMPONENT OF THE PASTA FOR THE MANUFACTURE OF PAPER OR CARTON. |
| JP4963146B2 (en)* | 2001-09-14 | 2012-06-27 | 旭化成建材株式会社 | Nonflammable soft face material |
| ATE525528T1 (en)* | 2005-02-11 | 2011-10-15 | Int Paper Co | PAPER SUBSTRATES FOR WALLBOARD STRIPS |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2624229B2 (en) | 1992-01-09 | 1997-06-25 | 特種製紙株式会社 | Air conditioning duct paper and air conditioning duct using this |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2624229B2 (en) | 1992-01-09 | 1997-06-25 | 特種製紙株式会社 | Air conditioning duct paper and air conditioning duct using this |
| Publication number | Publication date |
|---|---|
| JPH0770992A (en) | 1995-03-14 |
| Publication | Publication Date | Title |
|---|---|---|
| US5325893A (en) | Air duct and paper therefor | |
| CN1958948B (en) | Base paper for total heat exchanger element | |
| JP3791726B2 (en) | Total heat exchanger paper and total heat exchanger element using the same | |
| JPH0127198B2 (en) | ||
| JP2965833B2 (en) | Air-conditioning duct paper with excellent flame retardancy | |
| JP6571894B1 (en) | Total heat exchange element paper and total heat exchange element | |
| JP7252435B2 (en) | Method for producing low-density fiber paper containing hydrophobic nanofibers | |
| JP4401240B2 (en) | Total heat exchange element paper | |
| CA3094715C (en) | Base sheet for total heat exchanger element | |
| JP2624229B2 (en) | Air conditioning duct paper and air conditioning duct using this | |
| JP4696343B2 (en) | Rock wool board | |
| JP2000073265A (en) | Fiber structure having water absorption and evaporation properties | |
| JP3445951B2 (en) | Flameproof shoji paper and method for producing the same | |
| JPH10212691A (en) | Paper for total enthalpy heat exchanger | |
| JP2014163623A (en) | Total heat exchange element | |
| JP3136301B2 (en) | Metal plate with condensation water drop prevention function | |
| JP2002267245A (en) | duct | |
| JP2015059286A (en) | Total heat exchange element paper | |
| JP3738079B2 (en) | Air conditioning duct putty for preventing condensation and air conditioning duct using the putty | |
| JPH06207398A (en) | Moisture absorbing and releasing fiber sheet and its production | |
| JP7665281B2 (en) | Heat exchanger | |
| JP2020085336A (en) | Spacer for total heat exchange element, and total heat exchange element | |
| JPS6226498A (en) | Total heat exchanging element | |
| JP2003113598A (en) | Base paper for honeycomb core and honeycomb core | |
| WO2025177922A1 (en) | Inorganic fiber sheet |
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees | Free format text:JAPANESE INTERMEDIATE CODE: R250 | |
| R250 | Receipt of annual fees | Free format text:JAPANESE INTERMEDIATE CODE: R250 | |
| R250 | Receipt of annual fees | Free format text:JAPANESE INTERMEDIATE CODE: R250 | |
| FPAY | Renewal fee payment (event date is renewal date of database) | Free format text:PAYMENT UNTIL: 20070813 Year of fee payment:8 | |
| FPAY | Renewal fee payment (event date is renewal date of database) | Free format text:PAYMENT UNTIL: 20080813 Year of fee payment:9 | |
| LAPS | Cancellation because of no payment of annual fees |