JP2002159826A - Moisture absorbing and desorbing material and method for manufacturing the same - Google Patents
Moisture absorbing and desorbing material and method for manufacturing the sameInfo
- Publication number
- JP2002159826A JP2002159826A JP2000359323A JP2000359323A JP2002159826A JP 2002159826 A JP2002159826 A JP 2002159826A JP 2000359323 A JP2000359323 A JP 2000359323A JP 2000359323 A JP2000359323 A JP 2000359323A JP 2002159826 A JP2002159826 A JP 2002159826A
- Authority
- JP
- Japan
- Prior art keywords
- moisture
- absorbing
- resin
- resin layer
- desorbing
- 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.)
- Granted
Links
Landscapes
- Paper (AREA)
- Building Environments (AREA)
- Drying Of Gases (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高湿時には環境空
気中の水分を吸収する一方、低湿時には吸収していた水
分を環境空気中に放散することにより、環境空気中の湿
度の変動を緩和する機能を有する吸放湿性材料に関する
ものであり、特に建築物の内装材などとして有用であ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention absorbs moisture in environmental air at high humidity, and disperses the absorbed moisture into environmental air at low humidity, thereby mitigating fluctuations in humidity in environmental air. The present invention relates to a moisture-absorbing and desorbing material having a function of performing, and is particularly useful as an interior material of a building.
【０００２】[0002]
【従来の技術】現代の建築物は、鉄筋コンクリート構造
やプレハブ工法の普及、樹脂加工合板等の合成材料から
なる新建材や扉及び窓における金属サッシの発達等によ
って、かつての純日本建築と比較すれば著しく気密性の
高いものとなっている。係る建築物の高気密性は、冷暖
房効果の向上によるエネルギー資源の節約や、防音性の
向上による近隣騒音公害の防止などの観点からは、大変
に望ましいものであると言うことができる。しかしその
反面、室内における居住者の生活活動（人間の呼気、炊
事、風呂・シャワー等）が発生する湿気が、室外に逃げ
られずに室内に籠もり易く、行き場を失った湿気が壁面
や窓ガラス、窓枠サッシ等の表面に結露して、美観上及
び触感上望ましくないのみならず、建築材料の汚損や腐
蝕の原因となって、建築物の寿命を縮める要因ともなり
兼ねないという問題がある。2. Description of the Related Art Modern buildings are compared with the former pure Japanese architecture due to the spread of reinforced concrete structures and prefabricated construction methods, the development of new building materials made of synthetic materials such as resin-processed plywood, and the development of metal sashes on doors and windows. It is extremely airtight. The high airtightness of such a building can be said to be very desirable from the viewpoint of saving energy resources by improving the cooling and heating effect, and preventing noise pollution in the vicinity by improving soundproofing. However, on the other hand, the moisture generated by the resident's living activities (human breath, cooking, bath / shower, etc.) in the room is not easily escaped to the outside and is easily trapped in the room. Condensation on the surface of glass, window frame sash, etc. is not only undesirable from the viewpoint of aesthetics and tactile sensation, but also causes soiling and corrosion of building materials and may shorten the life of the building. is there.
【０００３】この問題の解決策としては、建築物に強制
換気装置又は空気調和装置等を設置して、室内の湿度を
常に一定範囲内に保つ方法なども、一部で研究されては
いるが、廊下や収納空間等も含めた建築物内部全体を対
象に強制換気又は空気調和させる為には、初期の設備投
資負担が著しく重くなることに加えて、夜間や外出時も
含めて設備を２４時間稼働させると電気代の負担も重
く、設備の保守整備の手間や費用もかかることから、一
般家庭用としてはあまり現実的な方法であるとは考えら
れていない。As a solution to this problem, a method of installing a forced-ventilation device or an air-conditioning device in a building to keep the indoor humidity within a certain range has been studied in part. In order to apply forced ventilation or air conditioning to the entire interior of the building, including corridors and storage spaces, the initial capital investment burden becomes extremely heavy, and equipment must be installed at night and when going out. It is not considered to be a very practical method for ordinary households because operating the unit for a long time causes a heavy burden on electricity and requires labor and cost for equipment maintenance.
【０００４】そこで、上記の様な特殊な設備によらずに
室内の湿度を調節する方法として、高湿時には環境空気
中の水分を吸収する一方、低湿時には吸収していた水分
を環境空気中に放散する機能を有する、吸放湿性材料を
室内に設置することで、室内の湿度変動を緩和する方法
が考案されている。この吸放湿性材料の設置の態様とし
ては種々考えられるが、吸放湿機能を迅速且つ十分に発
揮するためには、環境空気と接触する表面積が大きいほ
ど有利であると考えられることから、建築物の室内にお
いて大きな表面積を占める壁面や天井面等を、吸放湿性
材料を使用した壁紙等の内装材で仕上げる方法が、最も
有望視されている。Therefore, as a method of adjusting the indoor humidity without using the special equipment as described above, the moisture in the environmental air is absorbed at high humidity, while the absorbed moisture is absorbed into environmental air at low humidity. A method has been devised in which a moisture absorbing / releasing material having a function of dissipating is installed in a room to reduce the humidity fluctuation in the room. There are various possible modes for installing the moisture absorbing and releasing material. However, in order to quickly and sufficiently exhibit the moisture absorbing and releasing function, it is considered that a larger surface area in contact with environmental air is more advantageous. A method of finishing a wall surface, a ceiling surface, or the like that occupies a large surface area in a room of an object with an interior material such as a wallpaper using a moisture-absorbing / desorbing material is most promising.
【０００５】上記の吸放湿性材料を使用した壁紙として
具体的には、例えば難燃紙等の裏打紙の上にポリ塩化ビ
ニル樹脂等の発泡樹脂層を設けた通常の壁紙において、
発泡樹脂層に例えばシリカゲル又はゼオライト等の吸湿
性無機粉体や、アクリル系樹脂又はポリビニルアルコー
ル系樹脂等の高吸水性ポリマー等を配合することによっ
て、吸放湿性を具備させたものなどが考案されている。
しかるに、吸湿性無機粉体を使用したものは、吸湿量の
絶対量が少ないために、室内の湿度変動の緩和能力が必
ずしも十分ではなく、その点では吸水量の絶対量の多い
高吸水性ポリマーの方が有利であるが、その反面、高吸
水性ポリマーは吸水により膨潤軟化するために、高湿時
には壁紙の表面がべとつき易いほか、吸水した状態で表
面を押したり擦ったりすると、皺状に変形したり傷が付
いたりし易い等の問題点がある。As a wallpaper using the above-mentioned moisture absorbing / releasing material, specifically, for example, a normal wallpaper in which a foamed resin layer such as a polyvinyl chloride resin is provided on a backing paper such as a flame retardant paper,
A foamed resin layer, for example, a hygroscopic inorganic powder such as silica gel or zeolite, or a highly water-absorbing polymer such as an acrylic resin or a polyvinyl alcohol-based resin is blended to provide a material having moisture absorption / release properties. ing.
However, those using a hygroscopic inorganic powder have a small absolute amount of moisture absorption, so the ability to mitigate indoor humidity fluctuations is not necessarily sufficient, and in that respect, a superabsorbent polymer with a large absolute amount of water absorption On the other hand, since the superabsorbent polymer swells and softens due to water absorption, the surface of the wallpaper tends to be sticky at high humidity, and when the surface is pressed or rubbed with water absorbed, it becomes wrinkled. There are problems such as easy deformation and scratching.
【０００６】係る問題点を解決するために、高吸水性ポ
リマーを含有させた吸放湿性樹脂層の表面に、高吸水性
ポリマーを含有せず高湿時にも強度低下を起こしにくい
樹脂組成物からなる保護層を設けることも考えられる。
但し、吸放湿性樹脂層の表面を耐水性に優れた疎水性の
樹脂からなる保護層で覆ってしまうと、この保護層が環
境空気中と吸放湿性樹脂層との間での水分の移動を阻害
し、十分な吸放湿性が得られ難いので、保護層は透湿性
の高い水性樹脂により形成することが望ましいと考えら
れる。しかしながら、吸放湿性樹脂層の表面に、水性樹
脂の水溶液ないし水分散液からなる水性塗工液を塗工し
て保護層を設けようとすると、該水性塗工液の塗工中
に、該水性塗工液に含まれる水を、吸放湿性樹脂層中の
高吸水性ポリマーが吸収して膨潤してしまうため、良好
な塗工状態が得られないという問題点があった。[0006] In order to solve such a problem, a resin composition containing no superabsorbent polymer and having a strength that does not easily decrease even at high humidity is provided on the surface of the moisture absorbent / desorbable resin layer containing the superabsorbent polymer. It is also conceivable to provide a protective layer with a different thickness.
However, if the surface of the moisture-absorbing / desorbing resin layer is covered with a protective layer made of a hydrophobic resin having excellent water resistance, this protective layer transfers moisture between ambient air and the moisture-absorbing / desorbing resin layer. Therefore, it is considered that it is desirable that the protective layer is formed of a water-permeable resin having high moisture permeability. However, if an attempt is made to provide a protective layer by applying an aqueous coating solution comprising an aqueous resin aqueous solution or aqueous dispersion on the surface of the moisture absorbing / releasing resin layer, The water contained in the aqueous coating liquid is absorbed by the superabsorbent polymer in the moisture absorbing / releasing resin layer and swells, so that there is a problem that a good coating state cannot be obtained.
【０００７】[0007]
【発明が解決しようとする課題】本発明は、従来の技術
における上記のような問題点に着目してなされたもの
で、その課題とするところは、優れた吸放湿性を有する
と共に、高湿時にあっても表面がべとついたり傷付き易
くなったりすることがなく、しかも表面状態の良好な製
品を簡便に製造可能な吸放湿性材料及びその製造方法を
提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems in the prior art, and it is an object of the present invention to provide excellent moisture absorption / release properties and high humidity. It is an object of the present invention to provide a moisture-absorbing / desorbing material and a method for producing the same, which can easily produce a product having a good surface condition without causing the surface to become sticky or easily damaged even in some cases.
【０００８】[0008]
【課題を解決するための手段】本発明の吸放湿性材料
は、基材上に、吸水性物質を含有する吸放湿性樹脂層
と、透湿性防水樹脂被膜と、水性樹脂層とを順次具備す
ることを特徴とするものであり、また特に、前記水性樹
脂層が発泡層であることを特徴とするものである。The moisture-absorbing and desorbing material of the present invention comprises a substrate having a moisture-absorbing and desorbing resin layer containing a water-absorbing substance, a moisture-permeable waterproof resin film, and an aqueous resin layer. In particular, the aqueous resin layer is a foamed layer.
【０００９】本発明の吸放湿性材料の製造方法は、基材
上に吸水性物質を含有する吸放湿性樹脂層を形成し、該
吸放湿性樹脂層上に透湿性防水樹脂被膜を形成し、しか
る後に、該透湿性防水樹脂被膜上に水性樹脂を含有する
水性塗工液を塗工して水性樹脂層を設けることを特徴と
するものであり、また特に、前記水性樹脂を含有する水
性塗工液には発泡剤が添加されており、前記透湿性防水
樹脂被膜上に塗工された後に加熱発泡させることによ
り、水性樹脂層を発泡層となすことを特徴とするもので
ある。In the method for producing a moisture-absorbing / desorbing material of the present invention, a moisture-absorbing / desorbing resin layer containing a water-absorbing substance is formed on a substrate, and a moisture-permeable waterproof resin film is formed on the moisture-absorbing / desorbing resin layer. Thereafter, an aqueous coating solution containing an aqueous resin is applied on the moisture-permeable waterproof resin coating to provide an aqueous resin layer, and in particular, an aqueous resin containing the aqueous resin is provided. A foaming agent is added to the coating liquid, and the aqueous resin layer is formed into a foamed layer by heating and foaming after being applied on the moisture-permeable waterproof resin film.
【００１０】[0010]
【発明の実施の形態】以下、図面を参照しつつ本発明を
詳細に説明する。図１は本発明の吸放湿性材料の実施の
形態を示す模式断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic cross-sectional view showing an embodiment of the moisture-absorbing and releasing material of the present invention.
【００１１】本発明の吸放湿性材料は、図１に示す様
に、支持体となる適宜の基材１の表面上に、高吸水性ポ
リマー等の吸水性物質２１を含有する樹脂組成物からな
る吸放湿性樹脂層２と、該吸放湿性樹脂層２と環境空気
中との間での水分の移動を妨げない程度の透湿性を有
し、なお且つ後述する水性樹脂層４の塗工時における前
記吸放湿性樹脂層２中への水分の浸透が防止できる程度
の防水性を有する透湿性防水樹脂被膜３と、吸放湿性樹
脂層２の吸放湿機能を妨げない高い透湿性を有する水性
樹脂組成物からなる保護層としての水性樹脂層４とが、
この順に設けられて構成されるものである。As shown in FIG. 1, the moisture-absorbing and desorbing material of the present invention comprises a resin composition containing a water-absorbing substance 21 such as a superabsorbent polymer on the surface of an appropriate substrate 1 serving as a support. And a water-absorbent resin layer 2 having a moisture permeability not to hinder the movement of moisture between the moisture-absorbent and desorbable resin layer 2 and the ambient air, and for coating an aqueous resin layer 4 to be described later. A moisture-permeable waterproof resin film 3 having a waterproof property enough to prevent the penetration of moisture into the moisture-absorbing / desorbing resin layer 2 at the time, and a high moisture-permeable property that does not hinder the moisture absorbing / discharging function of the moisture-absorbing / desorbing resin layer 2. An aqueous resin layer 4 as a protective layer made of an aqueous resin composition having
They are provided in this order.
【００１２】本発明の吸放湿性材料における基材１の具
体的な材質や形状については一切限定されるものではな
く、例えば紙、織布又は不織布等の繊維質シートや、ポ
リオレフィン系樹脂シートやポリエステル系樹脂シート
等の合成樹脂シート、合成ゴムシート、アクリル樹脂板
やポリカーボネート樹脂板、ＡＢＳ樹脂板、ＦＲＰ等の
合成樹脂系基材、合板や集成材、繊維板、パーティクル
ボード等の木質系基材、鋼鈑や真鍮板、アルミニウム板
等の金属系基材、石膏板や珪酸カルシウム板、セメント
板、コンクリート板等の無機質系基材等、任意のものを
使用することができ、その表面には必要に応じて、例え
ば目止め処理、ベースコート処理、プライマー処理、コ
ロナ放電処理、オゾン処理、火炎処理、研磨処理等の適
宜の表面処理が施されていてもよい。The specific material and shape of the substrate 1 in the moisture-absorbing and desorbing material of the present invention are not limited at all. For example, a fibrous sheet such as paper, woven fabric or nonwoven fabric, a polyolefin resin sheet, Synthetic resin sheet such as polyester resin sheet, synthetic rubber sheet, acrylic resin plate, polycarbonate resin plate, ABS resin plate, synthetic resin base material such as FRP, plywood, laminated wood, fiber board, wood board such as particle board Any material can be used, such as materials, metal base materials such as steel plates, brass plates, and aluminum plates, and inorganic base materials such as gypsum plates, calcium silicate plates, cement plates, and concrete plates. If necessary, an appropriate surface treatment such as a plugging treatment, a base coat treatment, a primer treatment, a corona discharge treatment, an ozone treatment, a flame treatment, a polishing treatment, or the like is applied. It may be.
【００１３】特に、本発明の吸放湿性材料を壁紙として
使用する場合には、従来より合成樹脂系壁紙の基材とし
て使用されていた任意のシート状の材料が使用可能であ
る。具体的には例えば、木質パルプ等のセルロース系繊
維からなる抄造紙にスルファニル酸グアナジン又はリン
酸グアナジン等の水溶性難燃剤を含浸させたパルプ紙系
難燃紙や、セルロース系繊維の抄紙時に炭酸カルシウ
ム、水酸化アルミニウム又は水酸化マグネシウム等の無
機質剤を混抄した無機混抄紙、ガラス繊維又はアルミナ
繊維等の無機繊維を抄造した無機繊維紙等の難燃紙乃至
不燃紙や、同じく難燃剤や無機質剤を添加し又は無機繊
維から製造した難燃性乃至不燃性の織布又は不織布等、
何れも使用可能である。In particular, when the moisture-absorbing and desorbing material of the present invention is used as wallpaper, any sheet-like material conventionally used as a base material of a synthetic resin-based wallpaper can be used. Specifically, for example, pulp paper-based flame-retardant paper in which a water-soluble flame retardant such as guanazine sulfanilate or guanazine phosphate is impregnated into paper-made paper made of cellulosic fibers such as wood pulp, Flame-retardant or non-flammable paper, such as inorganic mixed paper mixed with an inorganic agent such as calcium, aluminum hydroxide or magnesium hydroxide, inorganic fiber paper formed from inorganic fibers such as glass fiber or alumina fiber, or flame retardant or inorganic Flame-retardant or non-flammable woven or non-woven fabrics made by adding agents or manufactured from inorganic fibers,
Either can be used.
【００１４】本発明の吸放湿性材料における吸放湿性樹
脂層２は、基質樹脂２１中に吸水性物質２２が分散され
て構成されるものである。基質樹脂２１としては、被膜
形成性を有しつつ、吸水膨潤性が少なく、吸水性物質２
２の吸水時にも被膜の形態を維持可能な樹脂材料であれ
ば如何なる樹脂であっても良いが、吸水性物質２２の環
境空気中との間での水分の吸収や放出を妨げることのな
い様に、例えばアクリル系樹脂、ウレタン系樹脂、ＳＢ
Ｒ系樹脂、酢酸ビニル系樹脂、エチレン−酢酸ビニル共
重合体樹脂、シリコーン系樹脂、ポリアミド系樹脂、ポ
リブテン樹脂、ポリビニルアルコール樹脂等の様に、透
湿度の高い樹脂を使用することが好ましく、これらの内
いずれか１種を単独で使用してもよいし、２種以上の樹
脂混合物を使用することもできる。The moisture absorbing / releasing resin layer 2 of the moisture absorbing / releasing material of the present invention is formed by dispersing a water absorbing substance 22 in a base resin 21. The substrate resin 21 has a film-forming property, a low water-absorbing swelling property, and a water-absorbing substance 2
2, any resin may be used as long as it can maintain the form of the film even when absorbing water, but it does not hinder the absorption and release of water between the water-absorbing substance 22 and the ambient air. For example, acrylic resin, urethane resin, SB
It is preferable to use a resin having high moisture permeability, such as an R-based resin, a vinyl acetate-based resin, an ethylene-vinyl acetate copolymer resin, a silicone-based resin, a polyamide-based resin, a polybutene resin, and a polyvinyl alcohol resin. Any one of these may be used alone, or a mixture of two or more resins may be used.
【００１５】吸放湿性樹脂層２に添加される吸水性物質
２２としては、水酸基やカルボキシル基等の親水性の官
能基を多く含む比較的疎な構造の物質であって、自身の
体積を超える多量の水分を内部に吸収貯蔵可能な物質で
あれば良く、具体的には公知の一般的な高吸水性ポリマ
ー等が用いられ、例えば、デンプン−アクリル酸グラフ
ト重合体、デンプン−アクリロニトリルグラフト重合
体、セルロース−アクリロニトリルグラフト重合体、ポ
リビニルアルコール架橋重合体、ポリアクリル酸ナトリ
ウム架橋体、アクリル酸メチル−酢酸ビニル共重合体ケ
ン化物等が用いられる。また、馬鈴薯デンプンやデキス
トリン類等の天然物を用いることも可能であり、これら
の吸水性物質は単独、もしくは２種以上混合して使用す
ることもできる。The water-absorbing substance 22 added to the moisture-absorbing / releasing resin layer 2 is a substance having a relatively sparse structure containing many hydrophilic functional groups such as a hydroxyl group and a carboxyl group, and having a volume exceeding its own volume. Any substance capable of absorbing and storing a large amount of water therein may be used. Specifically, a known general super-absorbent polymer or the like is used. For example, starch-acrylic acid graft polymer, starch-acrylonitrile graft polymer And cellulose-acrylonitrile graft polymer, polyvinyl alcohol cross-linked polymer, sodium polyacrylate cross-linked product, saponified methyl acrylate-vinyl acetate copolymer and the like. It is also possible to use natural products such as potato starch and dextrins, and these water-absorbing substances can be used alone or in combination of two or more.
【００１６】吸放湿性樹脂層２における基質樹脂２１と
吸水性物質２２との配合比は、本発明において特に限定
されるものではないが、一般的には基質樹脂２１を２０
〜８０重量％、吸水性物質２２を８０〜２０重量％程度
とすることが望ましい。基質樹脂２１の含有量が２０重
量％未満であると、高湿時に吸水性物質２２の吸水膨潤
による著しい変形や強度低下を十分に抑えることが困難
であり、一方、吸水性物質２２の含有量が２０重量％未
満であると、十分な吸放湿機能を得ることが困難であ
る。吸放湿性樹脂層２の厚さは、本発明において特に限
定されるものではないが、十分な吸放湿機能の発現と、
製造時の加工性や取扱時の可撓性等を考慮すると、一般
的には１０〜１００μｍ程度の範囲内とすることが望ま
しい。The mixing ratio of the substrate resin 21 and the water-absorbing substance 22 in the moisture-absorbing / releasing resin layer 2 is not particularly limited in the present invention.
It is preferable that the content of the water-absorbing substance 22 is about 80 to 20% by weight. If the content of the substrate resin 21 is less than 20% by weight, it is difficult to sufficiently suppress a significant deformation and a decrease in strength due to water absorption and swelling of the water absorbing substance 22 at high humidity. Is less than 20% by weight, it is difficult to obtain a sufficient moisture absorbing / releasing function. The thickness of the moisture-absorbing / desorbing resin layer 2 is not particularly limited in the present invention.
In consideration of workability at the time of manufacturing, flexibility at the time of handling, and the like, it is generally desirable that the thickness be in the range of about 10 to 100 μm.
【００１７】吸放湿性樹脂層２には必要に応じて、例え
ばシリカゲル、ゼオライト、珪藻土、焼成タルク等の様
に、大きな比表面積を有する多孔質の親水性無機物質の
粒子からなる吸湿性物質２３を添加することによって、
環境空気中の湿度が変化した際の吸放湿速度を向上し、
湿度調整機能を更に有効に発揮させることもできる。そ
の理由は、高吸水性ポリマー等の吸水性物質２２は、そ
の周囲に自発的に結露した水分を吸収するに留まるのに
対し、吸湿性物質２３は、高湿時には気体状の水分子を
積極的に結露させてそれを吸水性物質２２に受け渡し、
一方低湿時には逆に吸水性物質２２が保有する水分を受
け取って気化蒸散させる機能を果たしているものと推察
される。The moisture-absorbing / desorbing resin layer 2 may include, if necessary, a moisture-absorbing substance 23 made of porous hydrophilic inorganic substance particles having a large specific surface area, such as silica gel, zeolite, diatomaceous earth, and calcined talc. By adding
Improves the moisture absorption and desorption rate when the humidity in the environmental air changes,
The humidity adjustment function can be exhibited more effectively. The reason is that the water-absorbing substance 22 such as a superabsorbent polymer only absorbs the moisture spontaneously condensed around it, whereas the hygroscopic substance 23 actively promotes gaseous water molecules at high humidity. And then pass it to the water-absorbing substance 22,
On the other hand, it is presumed that at the time of low humidity, on the other hand, it has a function of receiving moisture held by the water-absorbing substance 22 and vaporizing and evaporating it.
【００１８】吸湿性物質２３の添加量は、本発明におい
て特に制限されるものではないが、吸湿性物質２３自体
の水分の吸収量は吸水性物質２２と比較すれば少ないの
で、吸水性物質２２よりも吸湿性物質２３を多く配合す
れば、飽和吸水量は少ないが環境湿度変化時の吸放湿速
度は高くなり、逆に吸湿性物質２３よりも吸水性物質２
２を多く配合すれば、環境湿度変化への感度は低下する
が飽和吸水量は多くなるから、使用目的に応じて適宜設
計すればよい。一般的には、吸湿性物質２３は吸水性物
質２２の触媒的な意味で、吸水性物質２２より少量で良
く、吸水性物質２２の１００重量部に対して吸湿性物質
２３を３０〜１００重量部程度の配合とすることが望ま
しい。Although the amount of the hygroscopic substance 23 to be added is not particularly limited in the present invention, the amount of moisture absorption of the hygroscopic substance 23 itself is smaller than that of the water absorbent substance 22. If more moisture-absorbing substance 23 is blended, the saturated water absorption is small, but the rate of moisture absorption and desorption at the time of environmental humidity change becomes high.
If 2 is added in a large amount, the sensitivity to changes in environmental humidity is reduced, but the saturated water absorption is increased. Therefore, it may be appropriately designed according to the purpose of use. In general, the hygroscopic substance 23 may be a smaller amount than the water absorbing substance 22 in the catalytic sense of the water absorbing substance 22, and the hygroscopic substance 23 is used in an amount of 30 to 100 weight parts per 100 parts by weight of the water absorbing substance 22. It is desirable that the composition be about parts by weight.
【００１９】以上に説明した吸放湿性樹脂層２の上に設
けられる透湿性防水樹脂被膜３は、吸放湿性樹脂層２と
環境空気中との間での水分の移動を妨げない程度の透湿
性を有し、なお且つ後述する水性樹脂層４の塗工時にお
ける水性塗工液中に含まれる水分の前記吸放湿性樹脂層
２中への浸透が防止できる程度の防水性を有する、親水
性且つ耐水性の樹脂組成物からなる被膜であれば良く、
その組成は特に限定されるものではないが、具体的には
例えば上記吸放湿性樹脂層２の基質樹脂２１の例として
挙げたものと同様の、アクリル系樹脂、ウレタン系樹
脂、ＳＢＲ系樹脂、酢酸ビニル系樹脂、エチレン−酢酸
ビニル共重合体樹脂、シリコーン系樹脂、ポリアミド系
樹脂、ポリブテン樹脂、ポリビニルアルコール樹脂等を
使用することができ、これらのうちの１種の単独であっ
ても２種以上の混合物又は積層被膜であってもよい。The moisture-permeable waterproof resin film 3 provided on the moisture-absorbing and releasing resin layer 2 described above has a permeability that does not hinder the movement of moisture between the moisture-absorbing and releasing resin layer 2 and the ambient air. Hydrophilic, which has a wettability and has a water-repellent property enough to prevent the water contained in the aqueous coating solution from penetrating into the moisture-absorbing / desorbing resin layer 2 when the aqueous resin layer 4 described later is applied. Any film made of a water-resistant and water-resistant resin composition may be used.
The composition is not particularly limited, but specifically, for example, the same acrylic resin, urethane resin, SBR resin as those exemplified as the substrate resin 21 of the moisture absorbing / releasing resin layer 2, Vinyl acetate resin, ethylene-vinyl acetate copolymer resin, silicone resin, polyamide resin, polybutene resin, polyvinyl alcohol resin and the like can be used. It may be a mixture or a laminated film of the above.
【００２０】透湿性防水樹脂被膜３の厚さは、薄過ぎる
と防水性が不十分となって水性樹脂層４の塗工時に吸放
湿性樹脂層２中の吸水性物質２２の膨潤を十分に阻止す
ることができず、一方厚過ぎても透湿度が低下して吸放
湿性樹脂層２の吸放湿性能を減殺する原因となるので、
両者を勘案して適宜設定する必要がある。透湿性防水樹
脂被膜３を構成する樹脂組成物として例えば上掲の各種
の樹脂から選ばれるものを採用した場合には、透湿性防
水樹脂被膜３の厚さは一般に０．２〜２０μｍ程度の範
囲内とすることが好ましい。When the thickness of the moisture-permeable waterproof resin film 3 is too small, the waterproof property becomes insufficient, and the swelling of the water-absorbing substance 22 in the moisture-absorbing / releasing resin layer 2 at the time of coating the aqueous resin layer 4 is sufficient. On the other hand, even if it is too thick, the moisture permeability is reduced, which causes the moisture absorption / release performance of the moisture absorption / release resin layer 2 to be reduced.
It is necessary to set appropriately in consideration of both. When the resin composition constituting the moisture-permeable waterproof resin coating 3 is selected from the above-mentioned various resins, for example, the thickness of the moisture-permeable waterproof resin coating 3 is generally in the range of about 0.2 to 20 μm. It is preferred to be within.
【００２１】透湿性防水樹脂被膜３上に設けられる水性
樹脂層４は、吸放湿性樹脂層２の表面を覆って高湿時や
湿潤時の表面のべとつきや表面強度の低下を防止するた
めの保護層として設けられるものであり、吸放湿性樹脂
層２の吸放湿機能を阻害しないように、水溶液又は水分
散液等の水性塗工液の形で塗工可能であり、なお且つ、
塗工乾燥後には親水性でありながら非水溶性、耐水性の
被膜を形成可能な水性樹脂４１からなるものであればよ
く、同一若しくは相異なる材質からなる２層以上の積層
構造とすることも差し支えない。The water-based resin layer 4 provided on the moisture-permeable waterproof resin film 3 covers the surface of the moisture-absorbing and desorbing resin layer 2 to prevent the surface from sticking and reducing the surface strength in high humidity and wet conditions. It is provided as a protective layer, and can be applied in the form of an aqueous coating solution such as an aqueous solution or an aqueous dispersion so as not to impair the moisture absorbing / releasing function of the moisture absorbing / releasing resin layer 2.
After coating and drying, it is sufficient that the resin is formed of an aqueous resin 41 which can form a water-insoluble and water-resistant coating while being hydrophilic, and may have a laminated structure of two or more layers made of the same or different materials. No problem.
【００２２】水性樹脂層４の主成分である水性樹脂４１
として具体的には、例えば水溶塩型アクリル系樹脂、ポ
リアクリルアミド、ポリビニルアルコール、ポリビニル
ピロリドン、カゼイン、セルロース誘導体、デキストリ
ン類等の水溶性樹脂を例えばメラミン化合物、ブロック
イソシアネート化合物、エポキシ化合物、ヒドラジン誘
導体、アジリジン、有機過酸化物等の架橋剤の添加若し
くは電離放射線照射等の手段により架橋させて非水溶化
したものや、例えばアクリル系樹脂、ポリウレタン系樹
脂、ＳＢＲ系樹脂、酢酸ビニル系樹脂、エチレン酢酸ビ
ニル共重合体樹脂、シリコーン系樹脂、ポリブテン樹脂
等の非水溶性樹脂粒子を水中に分散してなる水性エマル
ジョン系樹脂などの少なくとも１種または２種以上の樹
脂混合物を使用することができる。塗工液の安定性や塗
工乾燥後の表面物性、微多孔状態となることによる高透
湿性などの面では、水性エマルジョン系樹脂の採用が望
ましい。水性エマルジョン系樹脂を架橋剤の配合又は電
離放射線照射等により架橋させても良いことも勿論であ
る。Aqueous resin 41 which is a main component of aqueous resin layer 4
Specifically, for example, water-soluble salt type acrylic resin, polyacrylamide, polyvinyl alcohol, polyvinylpyrrolidone, casein, cellulose derivatives, dextrins such as water-soluble resins such as melamine compounds, blocked isocyanate compounds, epoxy compounds, hydrazine derivatives, Addition of a cross-linking agent such as aziridine or an organic peroxide or cross-linking by means of irradiation with ionizing radiation or the like to make it water-insoluble, for example, acrylic resin, polyurethane resin, SBR resin, vinyl acetate resin, ethylene acetate At least one or a mixture of two or more resins such as an aqueous emulsion resin obtained by dispersing water-insoluble resin particles such as a vinyl copolymer resin, a silicone resin and a polybutene resin in water can be used. It is desirable to use an aqueous emulsion resin in terms of the stability of the coating liquid, the surface properties after coating and drying, and the high moisture permeability due to the microporous state. Needless to say, the aqueous emulsion resin may be crosslinked by blending a crosslinking agent or irradiating with ionizing radiation.
【００２３】水性樹脂層４は必要に応じて、機械発泡法
又は発泡剤４２を配合する方法等の公知の適宜の手段に
より、多孔質の細胞状に発泡させても良く、そうするこ
とによって、水性樹脂層４の透湿性を更に向上し、吸放
湿性樹脂層２の吸放湿機能を更に存分に発揮させること
もできる。また、本発明の吸放湿性材料を住宅等の建築
物における壁紙等の内装材として使用する場合には、水
性樹脂層４を発泡させることでエンボスによる凹凸模様
６の形成を容易にし、意匠性にも優れた内装材を容易に
得ることができる利点もある。If necessary, the aqueous resin layer 4 may be foamed into a porous cell by a known appropriate means such as a mechanical foaming method or a method of blending a foaming agent 42. The moisture permeability of the aqueous resin layer 4 can be further improved, and the moisture absorbing / releasing function of the moisture absorbing / releasing resin layer 2 can be further exerted. When the moisture-absorbing and desorbing material of the present invention is used as an interior material such as a wallpaper in a building such as a house, the water-based resin layer 4 is foamed to facilitate the formation of the embossed pattern 6 by embossing, and Another advantage is that an excellent interior material can be easily obtained.
【００２４】上記発泡剤４２としては、例えばアゾジカ
ルボンアミド（ＡＤＣＡ）等のアゾ系化合物、Ｐ、Ｐ'
−オキシビス（ベンゼンスルホニルヒドラジッド）（Ｏ
ＢＳＨ）等のニトロソ化合物等の有機発泡剤又は炭酸水
素ナトリウム等の無機発泡剤等の熱分解化学発泡剤や、
例えばポリアクリロニトル系樹脂、フェノール系樹脂、
エポキシ系樹脂等の熱軟化性柔軟性殻体の内部にイソブ
タン等の低沸点液体を内包してなる膨張型マイクロカプ
セル発泡剤等を使用することができる。Examples of the foaming agent 42 include azo compounds such as azodicarbonamide (ADCA), and P and P ′.
-Oxybis (benzenesulfonyl hydrazide) (O
A thermal decomposition chemical blowing agent such as an organic blowing agent such as a nitroso compound such as BSH) or an inorganic blowing agent such as sodium hydrogen carbonate;
For example, polyacrylonitrile resin, phenol resin,
An expandable microcapsule foaming agent containing a low-boiling liquid such as isobutane in a heat-softening flexible shell such as an epoxy resin can be used.
【００２５】上記発泡剤４２の添加量は、本発明におい
て特に制限されるものではないが、一般的には水性樹脂
層４の主成分である水性樹脂４１の固形分１００重量部
に対して２〜２０重量部を添加することが好ましく、更
に好ましくは４〜１０部である。２重量部未満の場合に
は、発泡倍率が低く、吸放湿性向上の効果があまり期待
できない他、エンボスの凹凸模様６による意匠性の向上
も困難である。一方、２０重量部より多い場合には、発
泡セルが著しく粗雑な状態となり、シートの表面強度が
弱くなってしまう恐れがある。Although the amount of the foaming agent 42 is not particularly limited in the present invention, it is generally 2 parts by weight based on 100 parts by weight of the solid content of the aqueous resin 41 which is the main component of the aqueous resin layer 4. It is preferable to add -20 parts by weight, more preferably 4-10 parts. If the amount is less than 2 parts by weight, the foaming ratio is low and the effect of improving the moisture absorption / release properties cannot be expected much, and it is also difficult to improve the design property by the embossed uneven pattern 6. On the other hand, if the amount is more than 20 parts by weight, the foamed cells may be extremely coarse and the surface strength of the sheet may be weakened.
【００２６】水性樹脂層４には、その他必要に応じて、
例えば炭酸カルシウム、硫酸バリウム、水酸化アルミニ
ウム、水酸化マグネシウム等の無機質系充填剤や、酸化
チタン、酸化亜鉛等の着色顔料を始め、分散剤、消泡
剤、湿潤剤、難燃剤、防炎剤、抗菌剤、防黴剤、紫外線
吸収剤、光安定剤、熱安定剤、滑剤、艶調整剤、帯電防
止剤、ブロッキング防止剤、増粘剤等の各種の添加剤か
ら選ばれる１種以上を適宜添加することもできる。In the aqueous resin layer 4, if necessary,
For example, inorganic fillers such as calcium carbonate, barium sulfate, aluminum hydroxide, and magnesium hydroxide, and coloring pigments such as titanium oxide and zinc oxide, as well as dispersants, defoamers, wetting agents, flame retardants, and flame retardants. At least one selected from various additives such as antibacterial agents, antifungal agents, ultraviolet absorbers, light stabilizers, heat stabilizers, lubricants, gloss adjusters, antistatic agents, antiblocking agents, thickeners, etc. It can be added as appropriate.
【００２７】水性樹脂層４の厚さは、本発明において特
に制限されるものではないが、薄過ぎるとべとつき防止
や表面保護の効果に乏しく、逆に厚過ぎても透湿性が低
下して吸放湿性樹脂層２の吸放湿機能を減殺するので、
これらを勘案して適宜設計する必要がある。一般的に
は、非発泡の場合には５〜１００μｍ程度、発泡されて
いる場合には２０〜２０００μｍ程度の範囲内とするこ
とが好ましい。Although the thickness of the aqueous resin layer 4 is not particularly limited in the present invention, if it is too thin, the effect of preventing stickiness and surface protection is poor. Since the moisture absorption / release function of the moisture release resin layer 2 is reduced,
It is necessary to appropriately design in consideration of these. In general, the thickness is preferably in the range of about 5 to 100 μm when non-foamed and about 20 to 2000 μm when foamed.
【００２８】以上に説明した吸放湿性樹脂層２、透湿性
防水樹脂被膜３及び水性樹脂層４の形成方法は、本発明
において特に制限されるものではないが、吸放湿性樹脂
層２及び透湿性防水樹脂被膜３は疎水性の有機溶剤を分
散媒とする油性塗工液を用い、水性樹脂層４は水又は水
とアルコール類との混合物等を分散媒とする水性塗工液
を用いて、それぞれ塗工法により順次形成する方法によ
るのが一般的である。塗工方法としては、例えばナイフ
コート法、ノズルコート法、グラビアコート法、マイク
ログラビアコート法、ロータリースクリーンコート法、
リバースロースコート法、コンマコート法、リップコー
ト法、ダイコート法、スプレーコート法、ディップコー
ト法、フローコート法等の従来公知の任意の塗工方法が
採用可能であり、各層の塗工後の乾燥方法としては、例
えば熱風または赤外線ヒーター等の熱源をそれぞれ単独
もしくはこれらの複数種を組合せて用いることもでき
る。The method for forming the moisture-absorbing / desorbing resin layer 2, the moisture-permeable waterproof resin coating 3, and the aqueous resin layer 4 described above is not particularly limited in the present invention. The wet waterproof resin coating 3 uses an oil-based coating liquid using a hydrophobic organic solvent as a dispersion medium, and the aqueous resin layer 4 uses an aqueous coating liquid using water or a mixture of water and alcohols as a dispersion medium. It is common to use a method in which each is sequentially formed by a coating method. Examples of the coating method include a knife coating method, a nozzle coating method, a gravure coating method, a microgravure coating method, a rotary screen coating method,
Conventionally known coating methods such as a reverse coating method, a comma coating method, a lip coating method, a die coating method, a spray coating method, a dip coating method, and a flow coating method can be adopted, and drying after coating each layer. As a method, for example, a heat source such as hot air or an infrared heater may be used alone or in combination of two or more.
【００２９】本発明の吸放湿性材料には必要に応じて、
水性樹脂層４の表面に絵柄印刷層５を設けて絵柄による
意匠性を付与することもできる。絵柄印刷層５の印刷方
法としては、例えばグラビア印刷法、ロータリースクリ
ーン印刷法、フレキソ印刷法、インクジェット印刷法、
転写印刷法等の通常の印刷法を用いることができる。ま
た、立体的な意匠性を付与するために、メカニカルエン
ボス法又はケミカルエンボス法等により凹凸模様６加工
を設けたり、表面強度を更に向上させるために、表面に
透湿性の樹脂組成物からなる表面保護層を設けたりする
ことも、任意に行うことができる。The moisture-absorbing and desorbing material of the present invention may optionally contain
A design printing layer 5 may be provided on the surface of the aqueous resin layer 4 to impart a design with a design. As a printing method of the picture print layer 5, for example, a gravure printing method, a rotary screen printing method, a flexographic printing method, an inkjet printing method,
A normal printing method such as a transfer printing method can be used. Also, in order to impart a three-dimensional design property, an uneven pattern 6 is provided by a mechanical embossing method, a chemical embossing method, or the like, or a surface made of a moisture-permeable resin composition is used to further improve the surface strength. Provision of a protective layer can also be performed arbitrarily.
【００３０】[0030]
【実施例】以下に本発明の実施例及び比較例を示し、本
発明を更に詳細に説明する。The present invention will be described in more detail with reference to the following Examples and Comparative Examples.
【００３１】＜実施例１＞坪量９０ｇ／ｍ2の無機質紙
を基材としてその表面上に、まず下記組成の吸放湿性樹
脂組成物をコンマコート法により塗布して約９０℃で乾
燥し、乾燥後の塗布量約２０ｇ／ｍ2の吸放湿性樹脂層
を設けた。続いて該吸放湿性樹脂層上に、溶剤系ウレタ
ン樹脂をグラビアコート法により乾燥後の塗布量約１ｇ
／ｍ2に塗布、乾燥して透湿性防水樹脂被膜を形成し、
更に該透湿性防水樹脂被膜上に、マイクロカプセル発泡
剤を固形分比６重量部添加したエチレン−酢酸ビニル共
重合体系水性エマルジョン樹脂をコンマコート法により
乾燥後の塗布量約１４０ｇ／ｍ2に塗布して約９０℃で
乾燥させて水性樹脂層を形成した。そして、該水性樹脂
層の表面にグラビア印刷法により抽象柄の絵柄を印刷し
た後、炉内温度約１５０℃の発泡加熱炉にて水性樹脂層
を約５倍に発泡させてから、発泡した水性樹脂層の表面
に冷却エンボスロールを使用してエンボス模様を形成し
て、本発明の吸放湿性材料である壁紙を作製した。Example 1 An inorganic paper having a basis weight of 90 g / m 2 was used as a base material, and a moisture-absorbing / desorbing resin composition having the following composition was first applied on the surface thereof by a comma coating method and dried at about 90 ° C. Then, a moisture-absorbing / releasing resin layer having a coating amount of about 20 g / m 2 after drying was provided. Subsequently, about 1 g of a solvent-based urethane resin was dried on the moisture-absorbing and desorbing resin layer by a gravure coating method.
/ M 2 and dried to form a moisture-permeable waterproof resin film,
Further, on the moisture-permeable waterproof resin film, an ethylene-vinyl acetate copolymer-based aqueous emulsion resin containing a microcapsule foaming agent in a solid content ratio of 6 parts by weight was applied by a comma coat method to a coating amount of about 140 g / m 2 after drying. And dried at about 90 ° C. to form an aqueous resin layer. After printing an abstract pattern on the surface of the aqueous resin layer by a gravure printing method, the aqueous resin layer is foamed about 5 times in a foaming heating furnace at a furnace temperature of about 150 ° C. An embossed pattern was formed on the surface of the resin layer using a cooling embossing roll, and a wallpaper as a moisture absorbing and releasing material of the present invention was produced.
【００３２】 ［吸放湿性樹脂組成物の配合表］ 吸水性物質 ウレタン系高吸水性ポリマー ４０重量部 吸湿性物質 コロイド状合成シリカ ３０重量部 基質樹脂 ポリウレタン ９０重量部[Blending Table of Hygroscopic Resin Composition] Water-absorbing substance Urethane-based superabsorbent polymer 40 parts by weight Hygroscopic substance Colloidal synthetic silica 30 parts by weight Base resin polyurethane 90 parts by weight
【００３３】得られた壁紙は、各層の塗工ムラ等の欠陥
もなく、外観上良好な意匠性を有するものであった。ま
た、この壁紙について、市販の塩化ビニル系結露防止壁
紙（裏打紙上に高吸水性ポリマーが添加されたポリ塩化
ビニル樹脂発泡層が設けられたもの）及び結露防止加工
の施されていない市販の通常の塩化ビニル系壁紙（裏打
紙上に高吸水性ポリマーが添加されていないポリ塩化ビ
ニル樹脂発泡層が設けられたもの）と共に、下記の試験
方法にて吸放湿性能を測定した結果、本発明の吸放湿性
材料である実施例１の壁紙は、図２に示される様に非常
に優れた吸放湿性能を有するものであることが確認され
た。The obtained wallpaper had no defects such as coating unevenness of each layer and had good appearance in appearance. As for the wallpaper, a commercially available vinyl chloride-based dew-prevention wallpaper (a backing paper provided with a foamed polyvinyl chloride resin layer to which a superabsorbent polymer is added) and a commercially available non-dew-prevention-treated normal Of the present invention together with a vinyl chloride-based wallpaper (a backing paper provided with a foamed polyvinyl chloride resin layer to which no superabsorbent polymer was added) by the following test method, As shown in FIG. 2, it was confirmed that the wallpaper of Example 1 which is a moisture-absorbing / desorbing material had very excellent moisture-absorbing / desorbing performance.
【００３４】＜吸放湿性能試験方法＞試料を６ｃｍ×２
７ｃｍの大きさに裁断し、アルミテープにより表面の小
口１ｃｍ四方及び裏面全面を覆い側面及び裏面からの透
湿防止処置を施す。以上の処置より試料の透湿可能表面
積を４ｃｍ×２５ｃｍの１００ｍ2とする。こうして作
製した試験片を、温度２５℃、相対湿度５０％の条件に
設定された恒温恒湿試験機内に４日間放置した後、試験
片の重量（ａ）を測定し、これを初期値とする。次に、
試験片を温度２５℃、相対湿度９０％の条件に設定され
た恒温恒湿試験機内で１４４時間放置した後、温度２５
℃、相対湿度５０％に設定された恒温高湿試験機内で１
４４時間放置し、その間、適宜の時間間隔で試験片の重
量（ｂ）を測定する。各々の時刻における試験片の吸湿
量は、次式（１）により算出する。 吸湿量［ｇ／ｍ2］＝（試験片重量（ｂ）［ｇ］−試験片重量（ａ）［ｇ］） ／透湿可能表面積［ｍ2］ ・・・・・・（１）<Test method for moisture absorption / release performance>
The sheet is cut into a size of 7 cm, and a small edge of 1 cm square on the front surface and the entire back surface are covered with an aluminum tape, and a treatment for preventing moisture permeation from the side surface and the back surface is performed. From the above treatment, the moisture permeable surface area of the sample is set to 100 cm 2 of 4 cm × 25 cm. The test piece thus prepared was allowed to stand in a thermo-hygrostat set at a temperature of 25 ° C. and a relative humidity of 50% for 4 days, and then the weight (a) of the test piece was measured and used as an initial value. . next,
The test piece was left for 144 hours in a thermo-hygrostat set at a temperature of 25 ° C. and a relative humidity of 90%.
1 ℃ in a constant temperature and high humidity tester set at 50 ° C and 50% relative humidity
The specimen is left for 44 hours, during which time the weight (b) of the test piece is measured at appropriate time intervals. The moisture absorption of the test piece at each time is calculated by the following equation (1). Moisture absorption [g / m 2 ] = (test piece weight (b) [g] −test piece weight (a) [g]) / moisture permeable surface area [m 2 ] (1)
【００３５】＜比較例１＞上記実施例１において、透湿
性防水樹脂被膜の形成工程を省略し、その他は上記実施
例１と全く同一の条件で吸放湿性材料である壁紙を作製
しようとしたところ、吸放湿性樹脂層上に水性樹脂層用
の水性エマルジョン樹脂の水性塗工液を塗工した直後、
水性塗工液中の水分により吸放湿性樹脂層が厚み比で５
〜１０倍程度膨潤してしまい、表面状態の良好な吸放湿
性材料を得ることができなかった。<Comparative Example 1> In the above-described Example 1, the process of forming the moisture-permeable waterproof resin film was omitted, and the other conditions were the same as those in the above-mentioned Example 1 in order to produce wallpaper as a moisture-absorbing and releasing material. However, immediately after applying the aqueous coating solution of the aqueous emulsion resin for the aqueous resin layer on the moisture absorbing and releasing resin layer,
Due to the moisture in the aqueous coating solution, the moisture absorbing / releasing resin layer has a thickness ratio of 5
It swelled about 10 to 10 times, and it was not possible to obtain a hygroscopic material having a good surface condition.
【００３６】[0036]
【発明の効果】以上詳細に説明した様に、本発明の吸放
湿性材料は、吸水性物質を含有した吸放湿性樹脂層上
に、透湿性防水樹脂被膜を介して水性樹脂層を設けた構
成としたことにより、水性樹脂層を形成するための水性
塗工液の塗工時に、該水性塗工液に含有される水分によ
って吸放湿性樹脂層中の吸水性物質が吸水膨潤する現象
の発生を効果的に防止し、表面状態の良好な吸放湿性材
料を安定的に得ることができる。しかも、得られた吸放
湿性材料は、高湿時には環境空気中の水分を吸収し、一
方低湿時には吸収していた水分を放出することにより、
優れた湿度調整機能を果たし、しかも、表面層には吸水
性物質を含有していないので、高湿時に表面がべとつい
たり表面強度が低下したりすることがなく、例えば従来
の一般的な壁紙と全く同等の表面物性や意匠性を有する
吸放湿性材料を容易に得ることができるという優れた効
果を奏するものである。As described in detail above, the moisture-absorbing and desorbing material of the present invention has an aqueous resin layer provided on a moisture-absorbing and desorbing resin layer containing a water-absorbing substance via a moisture-permeable waterproof resin film. Due to the configuration, at the time of application of the aqueous coating solution for forming the aqueous resin layer, the phenomenon of the water-absorbing substance in the moisture-absorbing and desorbing resin layer by water absorption and swelling due to the moisture contained in the aqueous coating solution. Generation can be effectively prevented, and a hygroscopic material having a good surface condition can be stably obtained. Moreover, the obtained moisture absorbing / releasing material absorbs moisture in the environmental air at high humidity, and releases the absorbed moisture at low humidity,
Performs excellent humidity control function, and since the surface layer does not contain water-absorbing substances, the surface does not become sticky or decrease in surface strength at high humidity, for example, conventional general This is an excellent effect that a moisture-absorbing / desorbing material having the same surface physical properties and design as the wallpaper can be easily obtained.
【図１】本発明の吸放湿性材料の実施の形態を示す模式
断面図である。FIG. 1 is a schematic sectional view showing an embodiment of a moisture-absorbing and releasing material of the present invention.
【図２】本発明の吸放湿性材料の実施例の吸放湿性能試
験結果を示すグラフである。FIG. 2 is a graph showing the results of a moisture absorption / release performance test of an example of the moisture absorption / release material of the present invention.
１……基材 ２……吸放湿性樹脂層 ２１…基質樹脂 ２２…吸水性物質 ２３…吸湿性物質 ３……透湿性防水樹脂皮膜 ４……水性樹脂層 ４１…水性樹脂 ４２…発泡剤 ５……絵柄印刷層 ６……凹凸模様 DESCRIPTION OF SYMBOLS 1 ... Base material 2 ... Hygroscopic resin layer 21 ... Substrate resin 22 ... Water absorbing substance 23 ... Hygroscopic substance 3 ... Moisture-permeable waterproof resin film 4 ... Water-based resin layer 41 ... Water-based resin 42 ... Foaming agent 5 …… Pattern printing layer 6 …… Uneven pattern
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｂ０５Ｄ 5/00 Ｂ０５Ｄ 5/00 Ｆ 7/24 ３０１ 7/24 ３０１Ｌ Ｂ３２Ｂ 5/18 Ｂ３２Ｂ 5/18 27/00 27/00 Ｋ Ｅ０４Ｂ 1/64 Ｅ０４Ｂ 1/64 Ｄ (72)発明者 矢賀部 裕 東京都台東区台東１丁目５番１号 凸版印 刷株式会社内 Ｆターム(参考） 2E001 DB03 FA10 GA24 GA27 GA28 HA01 HA03 HA04 HA21 HB02 HB04 HC02 HC04 HC07 HD11 HD12 HD14 HE01 JA00 JA06 JA22 JC02 JC03 JD02 4D052 AA08 CE00 DA01 DB01 GB17 GB18 HA00 HA27 HA35 HA49 HB02 HB05 4D075 AE03 CA02 CA38 CA40 CB34 DA04 DA06 DB02 DB06 DB07 DB12 DB18 DB20 DB22 DB24 DB25 DB35 DB36 DB37 DB43 DB48 DB61 DC02 EA06 EB07 EB12 EB14 EB19 EB22 EB32 EB33 EB38 EB39 EB42 EB45 EC41 4F100 AA20H AK01B AK01C AK01D AK51 AK51H AK68 AT00A BA04 BA10A BA10D CA30B DG10 DJ01D EG001 EH461 EH462 EJ023 EJ423 GB08 HB21 HB31 JB05D JD04C JD05C JD15B JD15H JD16B JD16H JL07 4G066 AA22B AA80C AC13D AC17D AC24B AC24C AE06B AE20D BA03 BA05 BA36 CA43 DA03 FA21 FA25 GA06 Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat II (reference) B05D 5/00 B05D 5/00 F 7/24 301 7/24 301L B32B 5/18 B32B 5/18 27/00 27 / 00 K E04B 1/64 E04B 1/64 D (72) Inventor Hiroshi Yagabe 1-5-1, Taito, Taito-ku, Tokyo Letterpress Printing Co., Ltd. F-term (reference) 2E001 DB03 FA10 GA24 GA27 GA28 HA01 HA03 HA04 HA21 HB02 HB04 HC02 HC04 HC07 HD11 HD12 HD14 HE01 JA00 JA06 JA22 JC02 JC03 JD02 4D052 AA08 CE00 DA01 DB01 GB17 GB18 HA00 HA27 HA35 HA49 HB02 HB05 4D075 AE03 CA02 CA38 CA40 CB34 DA04 DA06 DB22 DB37 DB23 DB18 DB18 DB48 DB61 DC02 EA06 EB07 EB12 EB14 EB19 EB22 EB32 EB33 EB38 EB39 EB42 EB45 EC41 4F100 AA20H AK01B AK01C AK01D AK51 AK51H AK68 AT00A BA04 BA10A BA10D CA30B DG10 DJ01D EG001 EH461 EH462 EJ023 EJ423 GB08 HB21 HB31 JB05D JD04C JD05C JD15B JD15H JD16B JD16H JL07 4G066 AA22B AA80C AC13D AC17D AC24B AC24C AE06B AE20D BA0 3 BA05 BA36 CA43 DA03 FA21 FA25 GA06
Claims (4)
樹脂層と、透湿性防水樹脂被膜と、水性樹脂層とを順次
具備することを特徴とする吸放湿性材料。1. A moisture-absorbing / desorbing material characterized by comprising a moisture-absorbing / desorbing resin layer containing a water-absorbing substance, a moisture-permeable waterproof resin coating, and an aqueous resin layer on a substrate in that order.
とする請求項１に記載の吸放湿性材料。2. The moisture absorbing and releasing material according to claim 1, wherein said aqueous resin layer is a foamed layer.
脂層を形成し、該吸放湿性樹脂層上に透湿性防水樹脂被
膜を形成し、しかる後に、該透湿性防水樹脂被膜上に水
性樹脂を含む水性塗工液を塗工して水性樹脂層を設ける
ことを特徴とする吸放湿性材料の製造方法。3. A moisture-absorbing and desorbing resin layer containing a water-absorbing substance is formed on a substrate, and a moisture-permeable and waterproof resin film is formed on the moisture-absorbing and desorbing resin layer. A method for producing a moisture-absorbing / desorbing material, comprising applying an aqueous coating liquid containing an aqueous resin thereon to provide an aqueous resin layer.
が添加されており、前記透湿性防水樹脂被膜上に塗工さ
れた後に加熱発泡させることにより、水性樹脂層を発泡
層となすことを特徴とする請求項３に記載の吸放湿性材
料の製造方法。4. A foaming agent is added to the aqueous coating liquid containing the aqueous resin, and the aqueous resin layer is formed on the moisture-permeable waterproof resin coating and then heated and foamed to form the aqueous resin layer with the foamed layer. The method for producing a moisture-absorbing / desorbing material according to claim 3, wherein the method comprises:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000359323A JP3783555B2 (en) | 2000-11-27 | 2000-11-27 | Hygroscopic material and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000359323A JP3783555B2 (en) | 2000-11-27 | 2000-11-27 | Hygroscopic material and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002159826A true JP2002159826A (en) | 2002-06-04 |
| JP3783555B2 JP3783555B2 (en) | 2006-06-07 |
Family
ID=18831103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000359323A Expired - Fee Related JP3783555B2 (en) | 2000-11-27 | 2000-11-27 | Hygroscopic material and method for producing the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3783555B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004023500A1 (en) * | 2002-08-29 | 2004-03-18 | Matsushita Electric Industrial Co., Ltd. | Coated varistor |
| JP2007044614A (en) * | 2005-08-09 | 2007-02-22 | Dainippon Toryo Co Ltd | Method for manufacturing building material having decorative design |
| KR100977187B1 (en) * | 2010-02-19 | 2010-08-20 | 주식회사 두리이앤씨 | An artificial sculpture for prevention water percolation and method of fabricating for the same |
-
2000
- 2000-11-27 JP JP2000359323A patent/JP3783555B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004023500A1 (en) * | 2002-08-29 | 2004-03-18 | Matsushita Electric Industrial Co., Ltd. | Coated varistor |
| US6943659B2 (en) | 2002-08-29 | 2005-09-13 | Matsushita Electric Industrial Co., Ltd. | Coated varistor |
| JP2007044614A (en) * | 2005-08-09 | 2007-02-22 | Dainippon Toryo Co Ltd | Method for manufacturing building material having decorative design |
| KR100977187B1 (en) * | 2010-02-19 | 2010-08-20 | 주식회사 두리이앤씨 | An artificial sculpture for prevention water percolation and method of fabricating for the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3783555B2 (en) | 2006-06-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3941465B2 (en) | Hygroscopic material and method for producing the same | |
| JP4122704B2 (en) | Hygroscopic material and method for producing the same | |
| JP3783555B2 (en) | Hygroscopic material and method for producing the same | |
| JP2003062949A (en) | Moisture absorbing/discharging material and method for manufacturing the same | |
| JP4348948B2 (en) | Method for producing hygroscopic material | |
| JP2000141581A (en) | Antidewing decorative material | |
| JP2000177088A (en) | Decoration sheet | |
| JPH0222045A (en) | Moisture permeable and moisture condensation preventive wallpaper, and preparation thereof | |
| JP2002159828A (en) | Moisture absorbing and desorbing material | |
| JP2001001479A (en) | Decorative material having moisture absorbing/releasing performance | |
| JP3312567B2 (en) | Method for producing foam sheet having moisture absorption and moisture release properties | |
| JP2001199030A (en) | Decorative sheet and wall material using the same | |
| JP7255294B2 (en) | incombustible sheet | |
| JPH1086259A (en) | Expanded wall paper | |
| JP3951849B2 (en) | Roll screen | |
| JP4114401B2 (en) | Flame-retardant moisture-absorbing and releasing foam cosmetic material and method for producing the same | |
| JPH0421840Y2 (en) | ||
| JP2001096656A (en) | Decorative board for interior finish work | |
| JPH11198268A (en) | Formaldehyde trapping wall paper | |
| JPH0478759B2 (en) | ||
| JPH11207852A (en) | Facing material having moisture-absorbing and releasing function | |
| JP2003301675A (en) | Blind | |
| JPH0428840B2 (en) | ||
| JPS63210147A (en) | Production of nondripping expanded decorative material having ruggedness | |
| JP2000117916A (en) | Decorative material having moisture absorbing/desorbing performance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20040916 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20060208 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20060221 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20060306 |
|
| R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100324 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100324 Year of fee payment: 4 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110324 Year of fee payment: 5 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120324 Year of fee payment: 6 |
|
| LAPS | Cancellation because of no payment of annual fees |