JPH07231822A - Highly hydroscopic seat material - Google Patents

Highly hydroscopic seat material

Info

Publication number
JPH07231822A
JPH07231822A JP6052845A JP5284594A JPH07231822A JP H07231822 A JPH07231822 A JP H07231822A JP 6052845 A JP6052845 A JP 6052845A JP 5284594 A JP5284594 A JP 5284594A JP H07231822 A JPH07231822 A JP H07231822A
Authority
JP
Japan
Prior art keywords
layer
hygroscopic
sheet material
moisture
powder
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
Application number
JP6052845A
Other languages
Japanese (ja)
Other versions
JP3443924B2 (en
Inventor
Kazuo Hironaka
和夫 弘中
Masao Hara
正雄 原
Hideo Katsuta
日出男 勝田
Hiroko Kajikawa
浩子 梶川
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.)
Mazda Motor Corp
Original Assignee
Mazda Motor Corp
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 Mazda Motor Corp filed Critical Mazda Motor Corp
Priority to JP05284594A priority Critical patent/JP3443924B2/en
Publication of JPH07231822A publication Critical patent/JPH07231822A/en
Application granted granted Critical
Publication of JP3443924B2 publication Critical patent/JP3443924B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Landscapes

  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Laminated Bodies (AREA)

Abstract

PURPOSE:To improve a hygroscopic characteristic as well as a dehumidifying characteristic by laying a skin material containing methyl-based or ethyl-based cellulose powder. CONSTITUTION:A mesh type moisture and gas permeable adhesive l layer 3 is used to bond a skin layer 2 having gas permeability and hygroscopicity, or moisture permeability and hygroscopicity, and a gas permeable and hygroscopic underlayer 4 having gas permeability and hygroscopicity, thereby forming a skin material 1. The layer 4 has two gas permeable and hygroscopic base materials 5 and 5, and a hygroscopic layer 6 containing ethyl-based or ethyl- based cellulose powder is inserted in a gap between the materials 5 and 5. Also, the base materials 5 and 5 are made of nonwoven fabric, raised fabric, felt or the like, while the lower surface of the lower base material 5 is covered with a wetting prevention film 7 formed out of a plastic film. Furthermore, the base materials 5 and 5, and the layer 6 are all subjected to a quilting process with yarn 8. As a result, a tough seat material having high hygroscopicity and dehumidifying function can be manufactured.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業の利用分野】この発明は、例えば自動車のシート
表皮材として使用されるような高吸湿性シート材に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a highly hygroscopic sheet material used as a seat skin material for automobiles.

【０００２】[0002]

【従来の技術】従来、上述例のシート表皮材に要求され
る物理特性は触感に関連するものとして圧縮仕事量、摩
擦係数、吸湿量、吸熱量の４つがあり、このうち吸湿量
を除く他の物理特性すなわち圧縮仕事量、摩擦係数およ
び吸熱量に関しては従前の材料で充分に満足する特性が
確保されている反面、吸湿量については従前の材料にお
いては目標とする値１００ｇ／ｍ2 に対しての約３５ｇ
／ｍ2 程度の特性が得られるにすぎない。2. Description of the Related Art Conventionally, there are four physical properties required for the sheet skin material of the above-mentioned example, which are related to the tactile sensation: compression work amount, friction coefficient, moisture absorption amount, and heat absorption amount. The physical properties of the above, that is, the compression work, the coefficient of friction, and the heat absorption amount are sufficiently satisfied by the conventional material, while the moisture absorption amount is 100 g / m 2 against the target value of the conventional material. About 35g
Only a characteristic of about / m 2 is obtained.

【０００３】すなわち図３５に従来の吸湿剤としてのキ
ト酸、コラーゲン、ゼオライトの経過時間に対する吸湿
量〔ｇ／ｇ〕のそれぞれの特性を示す。この特性は経過
時間４時間までは温度を３０℃に、湿度を８０％に保
ち、経過時間４時間以降は温度を２３℃に、湿度を３０
％に保った時の吸湿特性および放湿特性を示すものであ
る。That is, FIG. 35 shows the respective characteristics of the amount of moisture absorption [g / g] with respect to the elapsed time of chitoic acid, collagen and zeolite as conventional moisture absorbents. This characteristic is that the temperature is kept at 30 ° C and the humidity is kept at 80% until the elapsed time of 4 hours, and the temperature is kept at 23 ° C and the humidity of 30% after the elapsed time of 4 hours.
It shows the moisture absorption property and the moisture release property when kept at%.

【０００４】図３５から明らかなように吸湿剤としてキ
ト酸、コラーゲン、ゼオライトを用いた従来のものでは
経過時間４時間の時点における吸湿量〔ｇ／ｇ〕が何れ
も０．１０ｇ／ｇ未満と低いため、充分な吸湿量を確保
するためには使用量の増大に伴ってシート材の厚みが増
加する問題点があり、逆にシート材の厚みを所定厚に保
つためには充分な吸湿量が確保できない問題点があっ
た。As is apparent from FIG. 35, in the conventional one using chitoic acid, collagen or zeolite as a hygroscopic agent, the hygroscopic amount [g / g] at the time of 4 hours elapsed is less than 0.10 g / g. Since it is low, there is a problem that the thickness of the sheet material increases as the usage amount increases in order to secure a sufficient moisture absorption amount, and conversely, there is a sufficient moisture absorption amount to keep the thickness of the sheet material at a predetermined thickness. There was a problem that could not be secured.

【０００５】また図３６に従来の吸湿剤を用いたコラー
ゲン含有合成皮革と表面処理を施していない本皮との経
過時間に対する吸湿量〔ｇ／ｍ2 〕を示すように、これ
ら従来の各シート表皮材においては満足する吸湿量が確
保できない問題点があった。Further, FIG. 36 shows the moisture absorption amount [g / m 2 ] with respect to the elapsed time of the collagen-containing synthetic leather using the conventional moisture absorbent and the real leather not subjected to the surface treatment. The skin material has a problem that it cannot secure a sufficient moisture absorption amount.

【０００６】一方、天然セルロースを含有する複合繊維
としては特開平閉４−１１０１５号公報に記載のものが
ある。すなわち図３７に示すようにポリウレタン樹脂か
らなる芯部１０１と、鞘部１０２とを有し、この鞘部１
０２はポリウレタン樹脂繊維１０３からなる被覆中に微
粉砕した豚皮革１０４羊毛（天然セルロース）１０５と
が散在し、繊維の表面に顕出した複合繊維である。On the other hand, as a composite fiber containing natural cellulose, there is one described in JP-A-4-11015. That is, as shown in FIG. 37, a core portion 101 made of polyurethane resin and a sheath portion 102 are provided.
Reference numeral 02 denotes a composite fiber that is exposed on the surface of the fiber, in which finely pulverized pig leather 104 and wool (natural cellulose) 105 are scattered in a coating made of polyurethane resin fiber 103.

【０００７】この図３７の天然セルロース（羊毛１０５
参照）を含有する複合繊維の経過時間に対する吸湿量
〔ｇ／ｇ〕は図３８に示す如く過少であって、シート表
皮材として用いるには性能的に不充分であった。The natural cellulose of FIG. 37 (wool 105
As shown in FIG. 38, the amount of moisture absorption [g / g] of the conjugate fiber containing the reference material) was too small, and the performance was insufficient for use as a sheet skin material.

【０００８】そこで、本出願人は圧縮仕事量、摩擦係
数、吸熱量等の他の特性性能を低下させることなく、吸
湿量の大幅増加を図るための諸種の実験を行なった結
果、メチル系またはエチル系セルロース粉末を多量（例
えば５００〜６００ｇ／ｍ2 ）に含有させることで、吸
湿特性および除湿特性を著るしく向上させることができ
る高吸湿性シート材を発明するに至った。しかし上述の
メチル系またはエチル系セルロース粉末を含有させて具
体的にシート表皮を構成する場合には、次に示す２つの
問題点がある。Therefore, the present applicant has conducted various experiments to significantly increase the amount of moisture absorption without degrading other characteristic performances such as the work of compression, the coefficient of friction, and the amount of heat absorption. By containing a large amount (for example, 500 to 600 g / m 2 ) of ethyl cellulose powder, the inventors have invented a highly hygroscopic sheet material capable of significantly improving the hygroscopic property and dehumidifying property. However, in the case where the above-mentioned methyl-based or ethyl-based cellulose powder is contained to specifically form the sheet skin, there are the following two problems.

【０００９】第一に、上述のメチル系またはエチル系セ
ルロース粉末は粉であり、粉末それ自体には形状保持機
能がない関係上、これらの粉末が点在した場合には粉末
分布の不均一に起因して、片寄りが発生し、触感が悪化
（所謂ごわごわ感が発生）する問題点がある。First, the above-mentioned methyl-based or ethyl-based cellulose powder is a powder, and since the powder itself has no shape-retaining function, when these powders are scattered, the powder distribution becomes non-uniform. As a result, there is a problem that unevenness occurs and the tactile sensation deteriorates (a so-called rough feeling is generated).

【００１０】第二に、上述のメチル系またはエチル系セ
ルロース粉末が一度に多量の水分を吸収（具体的にはコ
ップの水を多量にこぼした様な時）すると、これら粉末
が溶けて固り（粉末から固体に変化し）、圧縮特性など
の他特性が悪化する問題点がある。Second, when the above-mentioned methyl-based or ethyl-based cellulose powder absorbs a large amount of water at once (specifically, when a large amount of water in a cup is spilled), these powders melt and solidify. (Change from powder to solid) and other characteristics such as compression characteristics deteriorate.

【００１１】ところで、従来の吸湿層メカニズムは図２
９乃至図３２（但し図２９は吸湿前の断面図、図３０は
図２９のＣ−Ｃ線矢視図、図３１は吸湿過程の断面図、
図３２は図３１のＤ−Ｄ線矢視図である）に示されるよ
うに吸湿または通気性の基布１１０，１１０に挟まれる
吸湿粉末１１１は吸湿前（図２９、図３０参照）にあっ
ては各吸湿粉末１１１，１１１相互の間に空気通路が形
成されており、これにより湿気を含んだ空気が各吸湿粉
末１１１…に達し、空気に含まれる湿気を各吸湿粉末１
１１が吸い取るものであった。By the way, the conventional moisture absorption layer mechanism is shown in FIG.
9 to 32 (however, FIG. 29 is a sectional view before moisture absorption, FIG. 30 is a sectional view taken along the line CC of FIG. 29, and FIG. 31 is a sectional view of the moisture absorption process,
32 is a view taken along the line DD in FIG. 31). As shown in FIG. 31, the hygroscopic powder 111 sandwiched between the hygroscopic or breathable base cloths 110, 110 exists before the hygroscopicity (see FIGS. 29 and 30). As a result, an air passage is formed between each of the hygroscopic powders 111, 111, whereby the air containing moisture reaches each of the hygroscopic powders 111 ... And the moisture contained in the air is absorbed by each of the hygroscopic powders 1.
Eleven was a sucker.

【００１２】しかしながら、このような吸湿層メカニズ
ムのものにあっては、吸湿または通気性の基布１１０に
近い側の吸湿粉末１１１が吸湿後に水分によって図３
１、図３２に示すように膨潤してしまい各吸湿粉末１１
１…相互の間に形成される空気通路の面積が減少するた
め、膨潤した吸湿粉末１１１よりも中側の吸湿粉末１１
１への空気の流通が悪化し、吸湿粉末１１１に効率的な
吸湿作用を行なわせることができない問題点があった。However, in the case of such a moisture absorbing layer mechanism, the moisture absorbing powder 111 on the side close to the moisture absorbing or breathable base fabric 110 is absorbed by the moisture and then, as shown in FIG.
1, each swelled powder as shown in FIG.
1 ... Since the area of the air passage formed between them decreases, the hygroscopic powder 11 on the inner side of the swollen hygroscopic powder 111
There was a problem that the air flow to No. 1 was deteriorated and the moisture absorbing powder 111 could not be made to perform an efficient moisture absorbing action.

【００１３】[0013]

【発明が解決しようとする課題】この発明の請求項１記
載の発明は、メチル系またはエチル系セルロース粉末
（具体的にはカルボキシメチルセルロース、メチルセル
ロース、ヒドロキシプロピルメチルセルロース、ヒドロ
キシエチルメチルセルロース、エチルセルロースなど）
を含有することで、吸湿特性および除湿特性の大幅な向
上を図ることができ、しかも必要な吸湿量を少ない吸湿
材使用量にて達成することができる高吸湿性シート材の
提供を目的とする。The invention according to claim 1 of the present invention is a methyl-based or ethyl-based cellulose powder (specifically, carboxymethylcellulose, methylcellulose, hydroxypropylmethylcellulose, hydroxyethylmethylcellulose, ethylcellulose, etc.).
By containing, it is possible to significantly improve the hygroscopic property and dehumidifying property, and to provide a highly hygroscopic sheet material that can achieve the necessary hygroscopic amount with a small amount of hygroscopic material used. .

【００１４】この発明の請求項２記載の発明は、上記請
求項１記載の発明の目的と併せて、通気・吸湿性または
透湿・吸湿性の表皮層と、通気・吸湿性の下層との間に
メチル系またはエチル系セルロース粉末を配設すること
で、上述の表皮層と下層とによりメチル系またはエチル
系セルロース粉末の形状保持機能を確保し、点在による
粉末分布の不均一化、片寄り、触感悪化を防止すること
ができ、しかも簡単な構造により上記粉末を保持できる
と共に、表皮材表面の触感をドライ感に保つことができ
る高吸湿性シート材の提供を目的とする。The invention according to claim 2 of the present invention, together with the object of the invention according to claim 1, comprises a breathable / hygroscopic or moisture-permeable / hygroscopic skin layer and a breathable / hygroscopic lower layer. By arranging the methyl-based or ethyl-based cellulose powder between them, the shape-retaining function of the methyl-based or ethyl-based cellulose powder is ensured by the above-mentioned skin layer and the lower layer, and the uneven distribution of the powder due to the scattering, It is an object of the present invention to provide a highly hygroscopic sheet material capable of preventing the touch feeling from deteriorating and maintaining the powder with a simple structure and keeping the surface material surface feeling dry.

【００１５】この発明の請求項３記載の発明は、上記請
求項１記載の発明の目的と併せて、通気・吸湿性または
透湿・吸湿性の表皮層と、通気・吸湿性の下層とを備
え、この下層にメチル系またはエチル系セルロース粉末
を担持させることで、上述のメチル系またはエチル系セ
ルロース粉末の下層への担持構造により、該粉末の形状
保持機能を確保し、点在による粉末分布の不均一化、片
寄り、触感悪化を防止することができ、特に下層におい
て上述の粉末を担持するので、表皮材表面の触感向上を
図ることができる高吸湿性シート材の提供を目的とす
る。According to a third aspect of the present invention, in addition to the object of the first aspect of the invention, a breathable / hygroscopic or moisture-permeable / hygroscopic skin layer and a breathable / hygroscopic lower layer are provided. By supporting a methyl-based or ethyl-based cellulose powder in this lower layer, the above-mentioned structure for supporting the methyl-based or ethyl-based cellulose powder in the lower layer ensures the shape-retaining function of the powder, and the powder distribution due to the dot distribution The object of the present invention is to provide a highly hygroscopic sheet material capable of preventing unevenness, unevenness, and deterioration of tactile sensation, and particularly supporting the above-mentioned powder in the lower layer, thereby improving the tactile sensation of the surface of the skin material. .

【００１６】この発明の請求項４記載の発明は、上記請
求項３記載の発明の目的と併せて、上述の下層を通気性
吸湿性の２枚構造の基材とし、これら基材間に、メチル
系またはエチル系セルロース粉末を含有された吸湿層を
介設する所謂サンドイッチ構成とすることで、上下の基
材により上記粉末を挟持して、該粉末の形状保持機能の
向上を図ることができ、簡単な構成により上記目的を達
成することができる高吸湿性シート材の提供を目的とす
る。According to the invention of claim 4 of the present invention, in addition to the object of the invention of claim 3, the lower layer is a base material having a breathable and hygroscopic two-layer structure, and between the base materials, By using a so-called sandwich structure in which a hygroscopic layer containing a methyl-based or ethyl-based cellulose powder is interposed, the powder can be sandwiched between upper and lower base materials, and the shape retention function of the powder can be improved. An object of the present invention is to provide a highly hygroscopic sheet material capable of achieving the above object with a simple structure.

【００１７】この発明の請求項５記載の発明は、上記請
求項４記載の発明の目的と併せて、複数の基材間に複数
の吸湿層を介設する積層構造とし、吸湿材の吸湿面それ
自体を増大させ、吸湿材に効率的に吸湿を行なわせるよ
うにすることで、吸湿材の使用量減少を図って、触感の
さらなる向上を図り、所謂ごわごわ感をなくすことがで
きると共に、厚み変化防止により下層の厚みの均一化を
達成することができる高吸湿性シート材の提供を目的と
する。In addition to the object of the invention described in claim 4, the invention according to claim 5 of the present invention has a laminated structure in which a plurality of hygroscopic layers are provided between a plurality of base materials, and a hygroscopic surface of a hygroscopic material is provided. By increasing itself and allowing the moisture absorbent to efficiently absorb moisture, it is possible to reduce the usage amount of the moisture absorbent, further improve the tactile sensation, and eliminate the so-called rough feeling. It is an object of the present invention to provide a highly hygroscopic sheet material capable of achieving a uniform thickness of a lower layer by preventing change.

【００１８】この発明の請求項６記載の発明は、上記請
求項４もしくは５記載の発明の目的と併せて、キルティ
ング加工もしくは透湿樹脂による接着固定を施すことに
より、吸湿層を構成するメチル系またはエチル系セルロ
ース粉末の移動を防止して、該粉末の片寄りを一層良好
に防止して、触感の向上を図ることができ、特に経常的
な使用により粉末が移動するのを確実に防止することが
できる高吸湿性シート材の提供を目的とする。In addition to the object of the invention described in claim 4 or 5, the invention according to claim 6 of the present invention is a methyl-based material which constitutes a moisture absorption layer by performing quilting processing or adhesive fixing with a moisture-permeable resin. Alternatively, it is possible to prevent the movement of the ethyl cellulose powder, prevent the deviation of the powder even better, and improve the tactile sensation. It is possible to prevent the movement of the powder particularly with ordinary use. It is an object of the present invention to provide a highly hygroscopic sheet material that can be used.

【００１９】この発明の請求項７記載の発明は、上記請
求項１記載の発明の目的と併せて、メチル系またはエチ
ル系セルロース粉末が配設された部位より表皮側に防水
手段を設けることで、吸湿層よりも上部の層において水
分を遮断もしくは水の侵入スピード低下を図って、粉末
が溶けた後に固まって圧縮特性などの他特性が悪化する
のを防止することができる高吸湿性シート材の提供を目
的とする。According to the invention of claim 7 of the present invention, in addition to the object of the invention of claim 1, a waterproofing means is provided on the epidermis side from the portion where the methyl- or ethyl-based cellulose powder is disposed. , A highly hygroscopic sheet material capable of blocking moisture in the layer above the hygroscopic layer or reducing the intrusion speed of water to prevent the powder from solidifying after melting and deteriorating other properties such as compression properties. For the purpose of providing.

【００２０】この発明の請求項８記載の発明は、上記請
求項７記載の発明の目的と併せて、上記防水手段を水の
侵入を遮断する分離手段で構成することにより、吸湿層
への蒸気の侵入を許容しつつ同吸湿層への水の侵入を確
実に防止することができる高吸湿性シート材の提供を目
的とする。According to the invention of claim 8 of the present invention, in addition to the object of the invention of claim 7, the waterproof means is constituted by a separating means for blocking the intrusion of water, whereby vapor to the moisture absorption layer is It is an object of the present invention to provide a highly hygroscopic sheet material capable of reliably preventing the entry of water into the hygroscopic layer while permitting the entry of water.

【００２１】この発明の請求項９記載の発明は、上記請
求項７記載の発明の目的と併せて、上記防水手段を水の
侵入速度を遅らせる遅延手段で構成することにより、吸
湿層への水の侵入速度を遅延させ、例えば水をこぼした
様の場合には時間的に余裕を持って拭き取ることができ
る高吸湿性シート材の提供を目的とする。According to the invention of claim 9 of the present invention, in addition to the object of the invention of claim 7, the waterproof means is constituted by a delay means for delaying the intrusion speed of water, whereby water to the hygroscopic layer is absorbed. It is an object of the present invention to provide a highly hygroscopic sheet material which has a slower invasion speed and can be wiped off with sufficient time in the case of spilled water.

【００２２】この発明の請求項１０記載の発明は、上記
請求項８記載の発明の目的と併せて、分離手段として水
と水蒸気とを分離する分離膜を用いることで、簡単な構
成でありながら、この分離膜により吸湿層への蒸気の侵
入を許容しつつ同吸湿層への水の侵入を確実に禁止する
ことができる高吸湿性シート材の提供を目的とする。The invention according to claim 10 of the present invention has a simple structure in addition to the object of the invention according to claim 8 described above, by using a separation membrane for separating water and water vapor as a separating means. An object of the present invention is to provide a highly hygroscopic sheet material capable of permitting the invasion of vapor into the hygroscopic layer by this separation film and reliably prohibiting the invasion of water into the hygroscopic layer.

【００２３】この発明の請求項１１記載の発明は、上記
請求項９記載の発明の目的と併せて、孔径１０μｍ以下
の細孔により遅延手段を構成することで、簡単な構成で
ありながら、上述の細孔の通気抵抗により水の侵入速度
を遅らせることができる高吸湿性シート材の提供を目的
とする。According to the invention of claim 11 of the present invention, in addition to the object of the invention of claim 9, the delay means is constituted by pores having a pore diameter of 10 μm or less, so that the above-mentioned structure is simple. It is an object of the present invention to provide a highly hygroscopic sheet material capable of delaying the invasion rate of water due to the ventilation resistance of the pores.

【００２４】この発明の請求項１２記載の発明は、上記
請求項８もしくは９記載の発明の目的と併せて、表皮材
の最表面に透湿性樹脂層を形成し、かつこの樹脂層裏面
に凹凸部を形成することで、透湿性樹脂層の凹凸部にお
ける厚みが大の凸部により水分の侵入速度を遅延するこ
とができ、加えて凹凸構造により侵入された水分の分散
性向上を図ることができ、特に表面を平滑に保って触感
向上を図りつつ、水分の侵透防止と吸湿性確保の両立を
図ることができる高吸湿性シート材の提供を目的とす
る。The invention according to claim 12 of the present invention is, in addition to the object of the invention according to claim 8 or 9, wherein a moisture-permeable resin layer is formed on the outermost surface of the skin material and the back surface of the resin layer is uneven. By forming the part, the intrusion speed of moisture can be delayed by the protrusion having a large thickness in the uneven portion of the moisture-permeable resin layer, and in addition, the dispersibility of the invaded water can be improved by the uneven structure. An object of the present invention is to provide a highly hygroscopic sheet material capable of preventing moisture penetration and ensuring hygroscopicity, while maintaining a smooth surface to improve the touch.

【００２５】この発明の請求項１３記載の発明は、上記
請求項１１記載の発明の目的と併せて、表層上面に溌水
コーティング層を形成することで、上記細孔による遅延
効果に加えて、この最表面に位置する溌水コーティング
層により水をはじいて、水が吸湿層に達するのを確実に
防止するので、水の侵透速度をさらに低下させることが
できる高吸湿性シート材の提供を目的とする。According to the invention of claim 13 of the present invention, in addition to the object of the invention of claim 11, by forming a water repellent coating layer on the upper surface of the surface layer, in addition to the retarding effect by the pores, Since the water-repellent coating layer located on the outermost surface repels water and reliably prevents the water from reaching the moisture absorption layer, it is possible to provide a highly hygroscopic sheet material capable of further reducing the water permeation rate. To aim.

【００２６】この発明の請求項１４記載の発明は、上記
請求項１１記載の発明の目的と併せて、上記細孔の開口
率を１．０％〜５０．０％の範囲内とすることで、吸湿
性確保と強度維持による信頼性確保との両立を図ること
ができる高吸湿性シート材の提供を目的とする。The invention according to claim 14 of the present invention has the object of the invention according to claim 11 to set the aperture ratio of the pores within the range of 1.0% to 50.0%. It is an object of the present invention to provide a highly hygroscopic sheet material capable of achieving both hygroscopicity and reliability by maintaining strength.

【００２７】この発明の請求項１５記載の発明は、上記
請求項１記載の発明の目的と併せて、吸湿剤の表面を吸
湿粉末が吸湿し、膨潤した後においても吸湿層の通気抵
抗の増大を抑制することができ、各吸湿粉末の表面に確
実に吸湿を行なわせることができ、この結果、吸湿粉末
が効率的に使用されて、その目付量を減少させることが
でき、斯る目付量の減少によりシート材表面の触感向上
（所謂ごわごわ感を低減）を図ることができる高吸湿性
シート材の提供を目的とする。The invention according to claim 15 of the present invention, together with the object of the invention according to claim 1, increases the ventilation resistance of the hygroscopic layer even after the hygroscopic powder has absorbed and swelled the surface of the hygroscopic agent. Can be suppressed, and the surface of each hygroscopic powder can be reliably absorbed, and as a result, the hygroscopic powder can be used efficiently and its basis weight can be reduced. It is an object of the present invention to provide a highly hygroscopic sheet material capable of improving the tactile sensation on the surface of the sheet material (reducing the so-called "stiffness") by reducing the amount.

【００２８】この発明の請求項１６記載の発明は、上記
請求項１５記載の発明の目的と併せて、下層を積層構造
とすることで、吸湿粉末が吸湿し膨潤した後においても
吸湿層の通気抵抗の増大をより一層良好に抑制すること
ができる高吸湿性シート材の提供を目的とする。According to the sixteenth aspect of the present invention, in addition to the object of the above-mentioned fifteenth aspect, the lower layer has a laminated structure, so that the aeration of the hygroscopic layer even after the hygroscopic powder has absorbed and swelled. It is an object of the present invention to provide a highly hygroscopic sheet material capable of further effectively suppressing an increase in resistance.

【００２９】[0029]

【課題を解決するための手段】この発明の請求項１記載
の発明は、メチル系またはエチル系セルロース粉末が含
有された表皮材を備えた高吸湿性シート材であることを
特徴とする。The invention according to claim 1 of the present invention is characterized in that it is a highly hygroscopic sheet material provided with a skin material containing methyl-based or ethyl-based cellulose powder.

【００３０】この発明の請求項２記載の発明は、上記請
求項１記載の発明の構成と併せて、上記表皮材は通気・
吸湿性または透湿・吸湿性の表皮層と、通気・吸湿性の
下層とを備え、該下層と上記表皮層との間に、メチル系
またはエチル系セルロース粉末が含有された吸湿層を配
設した高吸湿性シート材であることを特徴とする。According to a second aspect of the present invention, in addition to the constitution of the first aspect of the invention, the skin material is aerated / ventilated.
A hygroscopic or moisture-permeable / hygroscopic skin layer and a breathable / hygroscopic lower layer are provided, and a hygroscopic layer containing a methyl- or ethyl-based cellulose powder is provided between the lower layer and the epidermal layer. The sheet material is a highly hygroscopic sheet material.

【００３１】この発明の請求項３記載の発明は、上記請
求項１記載の発明の構成と併せて、上記表皮材は通気・
吸湿性または透湿・吸湿性の表皮層と、通気・吸湿性の
下層とを備え、該下層にメチル系またはエチル系セルロ
ース粉末が担持された高吸湿性シート材であることを特
徴とする。According to a third aspect of the present invention, in addition to the constitution of the first aspect of the invention, the skin material is aerated
A highly hygroscopic sheet material comprising a hygroscopic or moisture-permeable / hygroscopic skin layer and a breathable / hygroscopic lower layer, and a methyl- or ethyl-based cellulose powder carried on the lower layer.

【００３２】この発明の請求項４記載の発明は、上記請
求項３記載の発明の構成と併せて、上記下層は通気性、
吸湿性を有する２枚の基材を備え、これら２枚の基材間
にメチル系またはエチル系セルロース粉末が含有された
吸湿層を介設した高吸湿性シート材であることを特徴と
する。According to a fourth aspect of the present invention, in addition to the constitution of the third aspect of the invention, the lower layer is breathable,
A highly hygroscopic sheet material having two hygroscopic base materials and a hygroscopic layer containing a methyl-based or ethyl-based cellulose powder interposed between the two base materials.

【００３３】この発明の請求項５記載の発明は、上記請
求項４記載の発明の構成と併せて、上記複数の基材と、
これら基材間に介設される複数の吸湿層とで積層構造と
成した高吸湿性シート材であることを特徴とする。According to a fifth aspect of the present invention, in addition to the constitution of the fourth aspect of the invention,
It is a highly hygroscopic sheet material having a laminated structure with a plurality of hygroscopic layers interposed between these base materials.

【００３４】この発明の請求項６記載の発明は、上記請
求項４もしくは５記載の発明の構成と併せて、通気性、
吸湿性を有する基材間に介設された吸湿層の基材間での
移動を防止するように、基材のキルティング加工手段も
しくは吸湿層の透湿樹脂による接着固定手段の何れか一
方の移動防止手段が施された高吸湿性シート材であるこ
とを特徴とする。According to a sixth aspect of the present invention, in addition to the structure of the fourth or fifth aspect of the invention, the breathability,
Movement of either the quilting processing means of the base material or the adhesive fixing means of the moisture permeable resin of the hygroscopic layer so as to prevent the movement of the hygroscopic layer interposed between the hygroscopic base materials It is a highly hygroscopic sheet material provided with a prevention means.

【００３５】この発明の請求項７記載の発明は、上記請
求項１記載の発明の構成と併せて、メチル系またはエチ
ル系セルロース粉末が配設された部位より表皮側に、メ
チル系またはエチル系セルロース粉末への水の到達を防
止し、かつ水蒸気の到達を許容する防水手段を設けた高
吸湿性シート材であることを特徴とする。The invention according to claim 7 of the present invention is, in addition to the constitution of the invention according to claim 1, a methyl-based or ethyl-based composition on the epidermis side from the site where the methyl-based or ethyl-based cellulose powder is disposed. It is a highly hygroscopic sheet material provided with a waterproof means for preventing water from reaching the cellulose powder and allowing water vapor to reach.

【００３６】この発明の請求項８記載の発明は、上記請
求項７記載の発明の構成と併せて、上記防水手段は水の
侵入を遮断する分離手段により構成した高吸湿性シート
材であることを特徴とする。According to the invention of claim 8 of the present invention, in addition to the constitution of the invention of claim 7, the waterproof means is a highly hygroscopic sheet material constituted by a separating means for blocking the intrusion of water. Is characterized by.

【００３７】この発明の請求項９記載の発明は、上記請
求項７記載の発明の構成と併せて、上記防水手段は水の
侵入速度を遅らせる遅延手段により構成した高吸湿性シ
ート材であることを特徴とする。According to a ninth aspect of the present invention, in addition to the structure of the seventh aspect of the invention, the waterproof means is a highly hygroscopic sheet material constituted by a delay means for delaying the intrusion speed of water. Is characterized by.

【００３８】この発明の請求項１０記載の発明は、上記
請求項８記載の発明の構成と併せて、上記分離手段は水
と水蒸気とを分離する分離膜により構成された高吸湿性
シート材であることを特徴とする。According to a tenth aspect of the present invention, in addition to the structure of the eighth aspect, the separating means is a highly hygroscopic sheet material constituted by a separation membrane for separating water and water vapor. It is characterized by being.

【００３９】この発明の請求項１１記載の発明は、上記
請求項９記載の発明の構成と併せて、表層に孔径が１０
μｍ以下の細孔を形成し、該細孔により遅延手段を構成
した高吸湿性シート材であることを特徴とする。According to the invention of claim 11 of the present invention, in addition to the structure of the invention of claim 9, the surface layer has a pore diameter of 10
It is characterized by being a highly hygroscopic sheet material in which pores having a size of μm or less are formed and the delay means is constituted by the pores.

【００４０】この発明の請求項１２記載の発明は、上記
請求項８もしくは９記載の発明の構成と併せて、表皮材
の最表面に透湿性樹脂層を形成すると共に、この透湿性
樹脂層の裏面に凹凸部を形成した高吸湿性シート材であ
ることを特徴とする。According to the twelfth aspect of the present invention, the moisture-permeable resin layer is formed on the outermost surface of the skin material in addition to the constitution of the eighth or ninth aspect of the invention, and the moisture-permeable resin layer It is characterized by being a highly hygroscopic sheet material having an uneven portion formed on the back surface.

【００４１】この発明の請求項１３記載の発明は、上記
請求項１１記載の発明の構成と併せて、孔径１０μｍ以
下の細孔が形成された表層の上面に溌水コーティング層
を形成し、該溌水コーティング層を遅延手段と成した高
吸湿性シート材であることを特徴とする。According to a thirteenth aspect of the present invention, in addition to the structure of the eleventh aspect of the present invention, a water repellent coating layer is formed on the upper surface of the surface layer in which pores having a pore diameter of 10 μm or less are formed, It is a highly hygroscopic sheet material having a water-repellent coating layer as a delay means.

【００４２】この発明の請求項１４記載の発明は、上記
請求項１１記載の発明の構成と併せて、上記細孔の開口
率を１．０％〜５０．０％の範囲内に設定した高吸湿性
シート材であることを特徴とする。According to a fourteenth aspect of the present invention, in combination with the structure of the eleventh aspect of the present invention, the aperture ratio of the pores is set within the range of 1.0% to 50.0%. It is a hygroscopic sheet material.

【００４３】この発明の請求項１５記載の発明は、上記
請求項１記載の発明の構成と併せて、通気性または吸湿
性を有する基布に吸湿粉末（コラーゲン、キト酸等の動
植物繊維または粉末やメチルセルロースなど）または短
繊維（合成樹脂で吸湿性を向上させた繊維状のものや、
ウール等の粉砕品すなわち粉になっていても性状は繊維
状のもの）と粉末バインダとを分散したものを噴霧し、
通気性または吸湿性を有する別基布が被覆されたものに
対して熱と圧力とを付勢して固定された下層と、表皮層
とを備えた高吸湿性シート材であることを特徴とする。According to a fifteenth aspect of the present invention, in addition to the constitution of the first aspect of the present invention, a moisture-absorbing powder (animal and vegetable fibers or powder such as collagen and chito acid is added to a breathable or hygroscopic base cloth. , Methyl cellulose, etc.) or short fibers (fibers with improved hygroscopicity made of synthetic resin,
Even if it is a crushed product such as wool, that is, even if it is a powder, the property is fibrous) and a powder binder is sprayed,
A highly hygroscopic sheet material comprising a lower layer fixed by applying heat and pressure to a material coated with another breathable or hygroscopic base fabric, and a skin layer. To do.

【００４４】この発明の請求項１６記載の発明は、上記
請求項１５記載の発明の構成と併せて、上記下層を積層
構造と成した高吸湿性シート材であることを特徴とす
る。According to a sixteenth aspect of the present invention, in addition to the constitution of the fifteenth aspect of the present invention, the lower layer is a highly hygroscopic sheet material having a laminated structure.

【００４５】[0045]

【発明の作用および効果】この発明の請求項１記載の発
明によれば、上記表皮材はメチル系またはエチル系セル
ロース粉末、具体的にはカルボキシメチルセルロース
（いわゆるＣＭＣ）、メチルセルロース、ヒドロキシプ
ロピルメチルセルロース、ヒドロキシエチルメチルセル
ロース、エチルセルロース等を含有するので、図３５に
経過時間に対する吸湿量〔ｇ／ｇ〕の特性（ＣＭＣの特
性参照）を、図３６に経過時間に対する吸湿量〔ｇ／ｍ
2 〕の特性（ＣＭＣの特性参照）をそれぞれ示すよう
に、吸湿特性および除湿特性の大幅な向上を図ることが
でき、特に目標とする吸湿量の値１００ｇ／ｍ2 （図３
６参照）を達成することができる効果がある。しかも従
前の吸湿剤を用いるものと比較して必要な吸湿量を少な
い吸湿剤使用量にて達成することができる効果がある。According to the invention described in claim 1 of the present invention, the skin material is a methyl- or ethyl-based cellulose powder, specifically carboxymethyl cellulose (so-called CMC), methyl cellulose, hydroxypropyl methyl cellulose, hydroxy. Since it contains ethyl methyl cellulose, ethyl cellulose, etc., FIG. 35 shows the characteristic of the moisture absorption amount [g / g] with respect to the elapsed time (see the characteristic of CMC), and FIG. 36 shows the moisture absorption amount with respect to the elapsed time [g / m].
2 ] (see CMC characteristics), the moisture absorption characteristics and dehumidification characteristics can be significantly improved. In particular, the target moisture absorption amount of 100 g / m 2 (see FIG. 3).
6) can be achieved. Moreover, there is an effect that a necessary amount of moisture absorption can be achieved with a smaller amount of moisture absorbent used as compared with the conventional one using the moisture absorbent.

【００４６】この発明の請求項２記載の発明によれば、
上記請求項１記載の発明の効果と併せて、通気性吸湿性
または透湿・吸湿性の表皮層と、通気性吸湿性の下層と
の間にメチル系またはエチル系セルロース粉末が含有さ
れた吸湿層を配設したので、上側の表皮層と下側の下層
とにより吸湿層を構成する上記粉末の形状保持機能を確
保することができ、粉末の点在による同粉末分布の不均
一化、片寄り、触感悪化を防止することができる効果が
ある。しかも簡単な構成により上記粉末を保持でき、水
蒸気が表皮のみを通過すればよいので、円滑な吸湿性が
得られ、表皮材表面の触感をドライ感に保つことができ
る。According to the second aspect of the present invention,
In addition to the effect of the invention according to claim 1, moisture absorption containing a methyl-based or ethyl-based cellulose powder between the breathable hygroscopic or moisture-permeable / hygroscopic skin layer and the breathable hygroscopic lower layer. Since the layers are arranged, it is possible to secure the shape retaining function of the above-mentioned powder that constitutes the moisture absorption layer by the upper skin layer and the lower lower layer, and the uneven distribution of the powder due to the scattered powder, There is an effect that it is possible to prevent leaning and deterioration of touch feeling. Moreover, since the powder can be retained with a simple structure and the water vapor only needs to pass through the epidermis, smooth hygroscopicity can be obtained and the feel of the surface of the epidermis material can be kept dry.

【００４７】この発明の請求項３記載の発明によれば、
上記請求項１記載の発明の効果と併せて、通気、吸湿性
または透湿・吸湿性の下層にメチル系またはエチル系セ
ルロース粉末を担持させたので、斯る担持構造により該
粉末の形状保持機能を確保し、粉末点在による粉末分布
の不均一化、片寄り、触感悪化を防止することができ、
特に下層において上記粉末を担持するので、表皮材表面
の触感向上（ざらつき防止）を図ることができる効果が
ある。According to the invention of claim 3 of the present invention,
In addition to the effect of the invention described in claim 1, since a methyl-based or ethyl-based cellulose powder is supported on the lower layer of the air-permeable, hygroscopic or moisture-permeable / moisture-absorbing layer, the shape-retaining function of the powder is achieved by the supporting structure. It is possible to prevent the non-uniformity of the powder distribution due to the scattered powder, unevenness, and deterioration of the tactile sensation.
In particular, since the powder is carried in the lower layer, there is an effect that it is possible to improve the feel of the surface of the skin material (prevent roughness).

【００４８】この発明の請求項４記載の発明によれば、
上記請求項３記載の発明の効果と併せて、上述の下層を
通気性吸湿性の上下２枚構造の基材とし、これら基材間
に、メチル系またはエチル系セルロース粉末が含有され
た吸湿層を介設して、所謂サンドイッチ構成となしたの
で、上下の基材により上記粉末を挟持して、該粉末の形
状保持機能の向上を図ることができ、簡単な構成により
所期の目的を達成することができる効果がある。According to the invention of claim 4 of the present invention,
In addition to the effect of the invention described in claim 3, a hygroscopic layer in which the lower layer is a base material having a breathable and hygroscopic upper and lower two-layer structure, and a methyl-based or ethyl-based cellulose powder is contained between the base materials. Since it has a so-called sandwich structure, the powder can be sandwiched between the upper and lower base materials, and the shape-retaining function of the powder can be improved, and the intended purpose can be achieved with a simple structure. There is an effect that can be.

【００４９】この発明の請求項５記載の発明によれば、
上記請求項４記載の発明の効果と併せて、複数の基材間
に複数の吸湿層を介設する積層構造と成したので、一層
に多量の粉末を配置する構造に対して必要量の粉末を複
数の吸湿層に分離して配設することができるので、上記
粉末分布をより一層均一にすることができると共に、吸
湿剤の吸湿面それ自体を増加させられるので、吸湿剤を
効果的に使えるため、吸湿剤の使用料を減少できる。According to the invention of claim 5 of the present invention,
In addition to the effect of the invention according to claim 4, a laminated structure in which a plurality of hygroscopic layers are provided between a plurality of base materials is provided, so that a required amount of powder is arranged for a structure in which a large amount of powder is arranged in one layer. Can be separated into a plurality of hygroscopic layers and disposed, so that the powder distribution can be made more uniform, and the hygroscopic surface itself of the hygroscopic agent can be increased, so that the hygroscopic agent can be effectively used. Since it can be used, the usage fee of the hygroscopic agent can be reduced.

【００５０】また、下層全体の厚み変化を防止して、下
層の厚みの均一化を図ることができる。さらに表皮材表
面のざらつきを防止することができる効果がある。Further, it is possible to prevent the thickness of the entire lower layer from changing and to make the thickness of the lower layer uniform. Further, there is an effect that the surface of the skin material can be prevented from being rough.

【００５１】この発明の請求項６記載の発明によれば、
上記請求項４もしくは５記載の発明の効果と併せて、上
述の基材のキルティング加工手段もしくは吸湿層の透湿
樹脂による接着固定手段を施したので、吸湿層を構成す
るメチル系またはエチル系セルロース粉末の経常的な使
用による移動を確実に防止することができ、この結果、
上記粉末の片寄りをより一層良好に防止して、触感の大
幅な向上を図ることができる効果がある。According to the invention of claim 6 of the present invention,
In addition to the effect of the invention described in claim 4 or 5, the quilting processing means for the base material or the adhesive fixing means for the moisture absorption layer by the moisture-permeable resin is applied, so that the methyl or ethyl cellulose constituting the moisture absorption layer is formed. It is possible to reliably prevent the movement of the powder due to regular use, and as a result,
There is an effect that the deviation of the powder can be prevented more satisfactorily, and the touch feeling can be significantly improved.

【００５２】この発明の請求項７記載の発明によれば、
上記請求項１記載の発明の効果と併せて、上述の防水手
段により吸湿層への水の到達を防止する一方、同吸湿層
への水蒸気の到達を許容するので、例えばコップの水を
多量にこぼした様な場合には、上記粉末が一度に多量の
水分を吸収して、圧縮特性などの他特性が悪化するが、
このような問題点を解消して、圧縮特性などの他特性が
悪化するのを防止することができる効果がある。According to the invention of claim 7 of the present invention,
In addition to the effect of the invention according to claim 1, while preventing the water from reaching the moisture absorption layer by the above-mentioned waterproofing means, the water vapor is allowed to reach the moisture absorption layer. In the case of spillage, the powder absorbs a large amount of water at once, and other characteristics such as compression characteristics deteriorate,
There is an effect that such problems can be solved and deterioration of other characteristics such as compression characteristics can be prevented.

【００５３】この発明の請求項８記載の発明によれば、
上記請求項７記載の発明の効果と併せて、上述の防水手
段が水の侵入を遮断する分離手段により構成されている
ので、吸湿層への蒸気の侵入を許容しつつ同吸湿層への
水の侵入を確実に防止することができる効果がある。According to the invention of claim 8 of the present invention,
In addition to the effect of the invention as set forth in claim 7, since the waterproof means is constituted by a separating means for blocking the invasion of water, water is allowed to enter the hygroscopic layer while allowing vapor to enter the hygroscopic layer. It is possible to reliably prevent the intrusion of

【００５４】この発明の請求項９記載の発明によれば、
上記請求項７記載の発明の効果と併せて、上述の防水手
段が水の侵入速度を遅らせる遅延手段により構成されて
いるので、吸湿層への水の侵入速度を遅延させて、例え
ば水をこぼした様の場合において時間的に余裕をもって
拭き取ることができる。According to the invention of claim 9 of the present invention,
In addition to the effect of the invention as set forth in claim 7, since the waterproof means is constituted by a delay means for delaying the water invasion speed, the water invasion speed to the moisture absorption layer is delayed to spill water, for example. In the case of such a situation, it can be wiped off with sufficient time.

【００５５】この発明の請求項１０記載の発明によれ
ば、上記請求項８記載の発明の効果と併せて、上述の分
離手段として水と水蒸気とを分離する分離膜を用いるの
で、簡単な構成でありながら、この分離膜により吸湿層
への蒸気の侵入を許容しつつ同吸湿層への水の侵入を確
実に禁止することができる効果がある。According to the invention described in claim 10 of the present invention, in addition to the effect of the invention described in claim 8, a separation membrane for separating water and water vapor is used as the above-mentioned separation means, so that a simple structure is provided. However, the separation membrane has an effect of permitting the invasion of water vapor into the moisture absorption layer and reliably inhibiting the intrusion of water into the moisture absorption layer.

【００５６】この発明の請求項１１記載の発明によれ
ば、上記請求項９記載の発明の効果と併せて、孔径が１
０μｍ以下の細孔により上述の遅延手段を構成したの
で、簡単な構成でありながら、この細孔の通気抵抗によ
り水の侵入速度を遅らせることができる。According to the invention of claim 11 of the present invention, in addition to the effect of the invention of claim 9, the pore diameter is 1
Since the above-mentioned retarding means is constituted by the pores of 0 μm or less, the permeation resistance of the pores can delay the water invasion speed even with a simple structure.

【００５７】この発明の請求項１２記載の発明によれ
ば、上記請求項８もしくは９記載の発明の効果と併せ
て、表皮材の最表面に透湿性樹脂層を形成し、かつ、こ
の樹脂層裏面に凹凸部を形成したので、透湿性樹脂層の
凹凸部における厚みが大の凸部により水分の侵入速度を
遅延させることができ、加えて上述の凹凸構造により侵
入された水分の分散性向上を図ることができ、特に表面
を平滑に保って触感向上を図りつつ、水分の浸透防止と
吸湿性確保との両立を図ることができる効果がある。According to the invention of claim 12 of the present invention, in addition to the effect of the invention of claim 8 or 9, a moisture-permeable resin layer is formed on the outermost surface of the skin material, and the resin layer is formed. Since the unevenness is formed on the back surface, the moisture penetration rate can be delayed by the unevenness of the moisture-permeable resin layer due to the large thickness of the unevenness of the moisture permeable resin layer. In particular, there is an effect that both the prevention of water permeation and the securing of hygroscopicity can be achieved while maintaining the surface smooth and improving the touch feeling.

【００５８】この発明の請求項１３記載の発明によれ
ば、上記請求項１１記載の発明の効果と併せて、表層上
面に溌水コーティング層を形成したので、上記細孔によ
る遅延効果に加えて、この最表面に位置する溌水コーテ
ィング層により水をはじいて、水が吸湿層に達するのを
確実に防止するので、水の浸透速度をさらに低下させる
ことができる効果がある。According to the invention of claim 13 of the present invention, in addition to the effect of the invention of claim 11, since the water repellent coating layer is formed on the upper surface of the surface layer, in addition to the retarding effect by the pores. Since the water repellent coating layer located on the outermost surface repels water to reliably prevent the water from reaching the moisture absorption layer, the water permeation rate can be further reduced.

【００５９】この発明の請求項１４記載の発明によれ
ば、上記請求項１１記載の発明の効果と併せて、上述の
細孔の開口率を１．０％〜５０．０％の範囲内に設定し
たので、吸湿性確保と強度維持による信頼性確保との両
立を図ることができる。According to the fourteenth aspect of the present invention, in addition to the effect of the eleventh aspect of the invention, the aperture ratio of the above-mentioned pores is set within the range of 1.0% to 50.0%. Since it is set, it is possible to achieve both the hygroscopicity and the reliability by maintaining the strength.

【００６０】すなわち、それぞれの開口率をパラメータ
として経過時間に対する吸湿量の特性を図３４に示す如
く、開口率が１．０％未満では充分に吸湿量の確保が困
難となり、逆に開口率が５０．０％を超過する場合には
吸湿量確保は得られるものの、強度が低下することに起
因して、信頼性が悪化する。このため、上述の細孔の開
口率を１．０％〜５０．０％の範囲内に設定することに
より、吸湿性の確保と強度維持による信頼性の確保との
両立を図ることができる効果がある。That is, as shown in FIG. 34, the characteristics of the moisture absorption amount with respect to the elapsed time using each aperture ratio as a parameter, it is difficult to secure a sufficient moisture absorption amount when the aperture ratio is less than 1.0%. If it exceeds 50.0%, the moisture absorption amount can be secured, but the reliability is deteriorated due to the decrease in strength. Therefore, by setting the aperture ratio of the above-described pores within the range of 1.0% to 50.0%, it is possible to achieve both hygroscopicity and reliability by maintaining strength. There is.

【００６１】この発明の請求項１５記載の発明によれ
ば、上記請求項１記載の発明の効果と併せて、通気性ま
たは吸湿性を有する基布に吸湿粉末または短繊維と粉末
バインダとを分散したものを噴霧し、通気性または吸湿
性を有する別基布が被覆されたものに対して熱と圧力と
を付勢して固定された下層と、表皮層とを備えているの
で、吸湿剤の表面を吸湿粉末または短繊維（吸湿性を有
する短繊維）が吸湿し、膨潤した後においても吸湿層の
通気抵抗の増大を抑制することができ、各吸湿粉末の表
面に確実に吸湿を行なわせることができ、この結果、吸
湿粉末が効率的に使用されて、その目付量を減少させる
ことができ、斯る目付量の減少によりシート材表面の触
感向上（所謂ごわごわ感を低減）を図ることができる効
果がある。According to the invention of claim 15 of the present invention, in addition to the effect of the invention of claim 1, hygroscopic powder or short fibers and a powder binder are dispersed in a breathable or hygroscopic base cloth. Since it is provided with a lower layer fixed by applying heat and pressure to a material coated with another base cloth having air permeability or hygroscopicity, and a skin layer, The surface of each of the hygroscopic powders or short fibers (short fibers having hygroscopicity) absorbs moisture and can suppress the increase of the ventilation resistance of the hygroscopic layer even after swelling, so that the surface of each hygroscopic powder surely absorbs moisture. As a result, the hygroscopic powder is efficiently used, and the weight per unit area can be reduced. By reducing the weight per unit area, the tactile feel of the surface of the sheet material is improved (so-called rough feeling is reduced). There is an effect that can be.

【００６２】この発明の請求項１６の発明によれば、上
記請求項１５記載の発明の効果と併せて、上記下層を積
層構造と成したので、吸湿粉末が吸湿し膨潤した後にお
いても吸湿層の通気抵抗の増大をより一層良好に抑制す
ることができて、目付量のさらなる減少およびシート材
表面のより一層の触感向上を図ることができる効果があ
る。According to the sixteenth aspect of the present invention, in addition to the effect of the fifteenth aspect of the invention, since the lower layer has a laminated structure, the hygroscopic layer is absorbed even after the hygroscopic powder has absorbed and swelled. There is an effect that it is possible to more effectively suppress the increase of the ventilation resistance of the sheet, further reduce the weight per unit area, and further improve the feel of the surface of the sheet material.

【００６３】[0063]

【実施例】この発明の一実施例を以下図面に基づいて詳
述する。 （第１実施例）図１は高吸湿性シート材の第１実施例を
示し、この表皮材１は通気性および吸湿性または透湿
性、吸湿性を有する表皮層２と、この表皮層２に透湿性
および通気性を有する接着層３を介して接着された通気
性、吸湿性の下層４とを備えている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. (First Embodiment) FIG. 1 shows a first embodiment of a highly hygroscopic sheet material. The skin material 1 is a skin layer 2 having air permeability and hygroscopicity or moisture permeability and hygroscopicity. It is provided with a breathable and hygroscopic lower layer 4 adhered via an adhesive layer 3 having moisture permeability and breathability.

【００６４】また上述の下層４は通気性、吸湿性を有す
る２枚の基材５，５を備え、これら２枚の基材５，５間
にメチル系またはエチル系セルロース粉末が含有された
吸湿層６を介設している。The lower layer 4 is provided with two base materials 5 and 5 having air permeability and hygroscopicity, and a hygroscopic material containing methyl or ethyl cellulose powder between the two base materials 5 and 5. The layer 6 is interposed.

【００６５】ここで、上述の表皮層２としては例えば透
湿性を有するウレタン系合成樹脂を用いると共に、表皮
層２の層厚を約数１０μｍに設定する。また上述の接着
層３は具体的にはメッシュ状（網目状）の部分接着構造
になっている。Here, as the above-mentioned skin layer 2, for example, a urethane-based synthetic resin having moisture permeability is used, and the layer thickness of the skin layer 2 is set to about several tens of μm. Further, the above-mentioned adhesive layer 3 is specifically a mesh-shaped (mesh-shaped) partial adhesive structure.

【００６６】さらに上述の基材５，５としては例えば不
織布、起毛布、フェルトなどを用いて通気性および吸湿
性を確保する。しかも上述の吸湿層６を構成するメチル
系またはエチル系セルロース粉末としてはカルボキシメ
チルセルロース（いわゆるＣＭＣ）、メチルセルロー
ス、ヒドロキシプロピルメチルセルロース、ヒドロキシ
エチルメチルセルロース、エチルセルロースなどを用い
る。Further, as the above-mentioned base materials 5 and 5, for example, non-woven fabric, raised fabric, felt or the like is used to ensure the air permeability and hygroscopicity. Moreover, as the methyl-based or ethyl-based cellulose powder forming the moisture absorption layer 6, carboxymethyl cellulose (so-called CMC), methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl methyl cellulose, ethyl cellulose or the like is used.

【００６７】この実施例では２枚の基材５，５のうちの
下側の基材５の下面にプラスチックフィルムなどからな
る漏れ防止膜７を配設し、かつ中間に吸湿層６を介設し
た上下の基材５，５を糸８によりキルティング加工し
て、吸湿層６が上下の基材５，５で移動するのを防止す
べく構成している。In this embodiment, a leak preventive film 7 made of a plastic film or the like is arranged on the lower surface of the lower base material 5 of the two base materials 5, 5, and a moisture absorption layer 6 is interposed in the middle. The upper and lower base materials 5 and 5 are quilted with the thread 8 to prevent the moisture absorption layer 6 from moving on the upper and lower base materials 5 and 5.

【００６８】このように上述の表皮材１がメチル系また
はエチル系セルロース粉末を含有するので、吸湿特性お
よび除湿特性の大幅な向上を図ることができる。加えて
上述の下層４を通気性吸湿性の２枚構造の基材５，５間
に、メチル系またはエチル系セルロース粉末が含有され
た吸湿層６を介設する所謂サンドイッチ構成と成したの
で、上記粉末の形状保持機能を確保し、粉末の点在によ
る粉末分布の不均一化、片寄り、触感悪化（所謂ごわご
わ感の発生）を防止することができる。また上述のキル
ティング加工により吸湿層６の移動を防止するので上記
粉末の片寄りをより一層良好に防止して触感向上を図る
ことができ、さらには上述の漏れ防止膜７の配設により
表皮材１の裏面側に上記粉末が漏れるのを確実に防止す
ることができる効果がある。Since the above skin material 1 contains the methyl-based or ethyl-based cellulose powder as described above, the hygroscopic property and the dehumidifying property can be greatly improved. In addition, since the lower layer 4 has a so-called sandwich structure in which the moisture absorbing layer 6 containing the methyl-based or ethyl-based cellulose powder is interposed between the base materials 5 and 5 having a breathable and hygroscopic two-layer structure, The shape-retaining function of the powder can be secured, and it is possible to prevent nonuniformity of the powder distribution due to the scattering of the powder, unevenness, and deterioration of the tactile sensation (generation of so-called rough feeling). Further, the movement of the moisture absorption layer 6 is prevented by the above-mentioned quilting process, so that the deviation of the powder can be prevented more effectively and the tactile sensation can be improved. There is an effect that it is possible to reliably prevent the powder from leaking to the back surface side of No. 1.

【００６９】（第２実施例）図２は高吸湿性シート材の
第２実施例を示し、この表皮材９は下層４の構造を、複
数の基材５…と、これら基材５，５間にそれぞれ介設さ
れる複数の吸湿層６…とで積層構造となしたものであ
り、その他の構成は先の第１実施例と同様である。(Second Embodiment) FIG. 2 shows a second embodiment of a highly hygroscopic sheet material. This skin material 9 has a structure of the lower layer 4, a plurality of base materials 5, ... A plurality of moisture absorption layers 6 and the like are respectively interposed between them to form a laminated structure, and other configurations are the same as those of the first embodiment.

【００７０】このように構成すると、複数の各基材５，
５間に吸湿層６…を分離して配設することができるので
上記粉末分布をより一層均一にすることができると共
に、下層４全体の厚み変化の防止を図ることができる効
果がある。なおその他の点については先の第１実施例と
ほぼ同様の作用、効果を奏するので、図２において図１
と同一の部分は同一符号を付して、その詳しい説明を省
略する。With this structure, a plurality of base materials 5,
Since the hygroscopic layers 6 can be separately arranged between the layers 5, the above-mentioned powder distribution can be made more uniform, and the thickness change of the entire lower layer 4 can be prevented. In other respects, the same operation and effect as those of the first embodiment described above are obtained, and therefore, in FIG.
The same parts as those in FIG.

【００７１】（第３実施例）図３は高吸湿性シート材の
第３実施例を示し、この表皮材１０は通気性および吸湿
性または透湿性、吸湿性を有する表皮層２と、この表皮
層２に接着層３を介して接着された通気性、吸湿性の下
層４とを備えている。(Third Embodiment) FIG. 3 shows a third embodiment of a highly hygroscopic sheet material. This skin material 10 is a skin layer 2 having breathability and hygroscopicity or moisture permeability, and this skin. It has a breathable, hygroscopic lower layer 4 adhered to the layer 2 via an adhesive layer 3.

【００７２】また上述の下層４は通気性、吸湿性を有す
る２枚の基材５，５を備え、これら２枚の基板５，５間
にメチル系またはエチル系セルロース粉末が含有された
吸湿層６を介設している。The above-mentioned lower layer 4 is provided with two base materials 5 and 5 having air permeability and hygroscopicity, and a hygroscopic layer containing a methyl-based or ethyl-based cellulose powder between these two substrates 5 and 5. 6 are installed.

【００７３】この第３実例においては上記粉末と熱硬化
性の透湿樹脂（例えばウレタン系樹脂）とを混合し、こ
の混合物を上下の基材５，５間に挟持した後に、透湿樹
脂を熱硬化（熱プレスによる乾燥処理）させることで、
基材５，５間の吸湿層６が移動しないように構成してい
る。すなわち、第１、第２の各実例においては移動防止
手段としてキルティング加工手段を用いたが、この第３
実施例においては移動防止手段として吸湿層６の透湿樹
脂熱硬化による接着固定手段を用いたものである。In this third example, the powder and the thermosetting moisture-permeable resin (for example, urethane resin) are mixed, and the mixture is sandwiched between the upper and lower base materials 5 and 5, and then the moisture-permeable resin is added. By heat curing (drying with hot press),
The moisture absorption layer 6 between the base materials 5 and 5 is configured not to move. That is, in each of the first and second examples, the quilting processing means is used as the movement preventing means, but this third
In the embodiment, as the movement preventing means, an adhesive fixing means by thermosetting moisture-permeable resin of the moisture absorbing layer 6 is used.

【００７４】このように、上述の透湿樹脂の熱硬化によ
る接着固定手段を用いると、吸湿層６を構成する上記粉
末の移動を確実に防止することができるので、該粉末の
片寄りがなくなり、触感の向上を図ることができる効果
がある。As described above, when the adhesive fixing means by thermosetting the moisture-permeable resin is used, it is possible to reliably prevent the movement of the powder forming the moisture absorption layer 6, so that the powder is not offset. Therefore, there is an effect that the touch feeling can be improved.

【００７５】なお、その他の点については先の第１実施
例とほぼ同様の作用、効果を奏するので、図３において
は前図と同一の部分には同一符号を付して、その詳しい
説明を省略する。ここで、上述の透湿樹脂に代えてホッ
トメルト粉末を用いてもよいことは勿論である。In other respects, the same operation and effect as in the first embodiment are achieved in other points. Therefore, in FIG. 3, the same parts as those in the previous figure are designated by the same reference numerals, and detailed description thereof will be given. Omit it. Here, it goes without saying that hot-melt powder may be used instead of the above-mentioned moisture-permeable resin.

【００７６】（第４実施例）図４は高吸湿性シート材の
第４実施例を示し、この表皮材１１は下層４の構造を、
複数の基材５…と、これら基材５，５間にそれぞれ介設
される複数の吸湿層６…とで積層構造と成したものであ
り、その他の構成は先の第３実施例と同様である。(Fourth Embodiment) FIG. 4 shows a fourth embodiment of a highly hygroscopic sheet material, and this skin material 11 has the structure of the lower layer 4.
A plurality of base materials 5 ... and a plurality of moisture absorption layers 6 respectively interposed between the base materials 5 and 5 have a laminated structure, and other configurations are similar to those of the third embodiment. Is.

【００７７】このように構成すると、複数の各基材５，
５間に吸湿層６…を分離して配設することができるの
で、上記粉末分布をより一層均一にすることができると
共に、下層４全体の厚み変化の防止を図ることができる
効果がある。なお、その他の点については先の第３実施
例とほぼ同様の作用、効果を奏するので、図４において
図３と同一の部分には同一符号を付して、その詳しい説
明を省略する。With this structure, a plurality of base materials 5,
Since the moisture absorption layers 6 ... Can be disposed separately between the layers 5, the above-mentioned powder distribution can be made more uniform, and the thickness change of the entire lower layer 4 can be prevented. In other respects, the same operation and effect as in the third embodiment described above are obtained, and therefore, in FIG. 4, the same parts as those in FIG. 3 are designated by the same reference numerals, and detailed description thereof will be omitted.

【００７８】（第５実施例）図５は高吸湿性シート材の
第５実施例を示し、この表皮材１２は通気性吸湿性また
は透湿性、吸湿性の表皮層２と、通気性吸湿性の下層４
とを備え、該下層４にメチル系またはエチル系セルロー
ス粉末を担持させて吸湿層６を構成したものである。(Fifth Embodiment) FIG. 5 shows a fifth embodiment of a highly hygroscopic sheet material. This skin material 12 is a breathable hygroscopic or moisture-permeable, hygroscopic skin layer 2, and a breathable hygroscopic material. Lower layer 4
And a lower layer 4 supporting a methyl-based or ethyl-based cellulose powder to form a moisture-absorbing layer 6.

【００７９】すなわち、上述の吸湿層６は、吸湿性およ
び透湿性を有する絹、綿、ウール等の短繊維１３と、メ
チル系またはエチル系セルロース粉末と、ウレタン系樹
脂等の熱硬化性の透湿樹脂との三者を混合し、熱プレス
接着により構成したものである。That is, the hygroscopic layer 6 is composed of short fibers 13 such as silk, cotton and wool having hygroscopicity and moisture permeability, methyl-based or ethyl-based cellulose powder, and thermosetting permeable material such as urethane resin. The wet resin and the wet resin are mixed and heat-bonded.

【００８０】このように構成すると、上述の短繊維１３
の混合により触感の向上を図ることができる効果があ
る。なお、その他の点に付いては先の実施例とほぼ同様
の作用、効果を奏するので、図５において前図と同一の
部分には同一符号を付して、その詳しい説明を省略す
る。With this structure, the above-mentioned short fibers 13 are formed.
There is an effect that the touch feeling can be improved by mixing Since the other points have substantially the same operation and effect as those of the previous embodiment, the same parts in FIG. 5 as those in the previous figure are designated by the same reference numerals, and detailed description thereof will be omitted.

【００８１】（第６実施例）図６は高吸湿性シート材の
第６実施例を示し、この表皮材１４は通気性および吸湿
性または透湿性、吸湿性を有する表皮層２と、この表皮
層２に接着層３を介して接着された通気性、吸湿性の下
層４とを備えて、該下層４は通気性、吸湿性を有する２
枚の基材５，５を備え、これら２枚の基材５，５間にメ
チル系またはエチル系セルロース粉末が含有された吸湿
層６を介設している。(Sixth Embodiment) FIG. 6 shows a sixth embodiment of a highly hygroscopic sheet material. This skin material 14 is a skin layer 2 having breathability and hygroscopicity or moisture permeability and hygroscopicity, and this skin. The lower layer 4 is provided with a breathable and hygroscopic lower layer 4 adhered to the layer 2 through an adhesive layer 3, and the lower layer 4 has breathable and hygroscopic properties.
A sheet of base material 5, 5 is provided, and a hygroscopic layer 6 containing a methyl-based or ethyl-based cellulose powder is interposed between these two sheets of base material 5, 5.

【００８２】この第６実施例では、上述のメチル系また
はエチル系セルロース粉末と、発泡ゴム１５（通気性を
有するゴム）とを混合して、上述の吸湿層６を構成し、
上下の基材５，５間に該吸湿層６を介設した状態下にお
いて、これらを糸８でキルティング加工している。In the sixth embodiment, the above-mentioned methyl-based or ethyl-based cellulose powder is mixed with the foamed rubber 15 (rubber having air permeability) to form the above-mentioned moisture absorption layer 6,
Under the condition that the moisture absorption layer 6 is interposed between the upper and lower base materials 5 and 5, these are quilted with the thread 8.

【００８３】このように構成すると、上述の発泡ゴム１
５の混合により触感向上（所謂ごわごわ感の解消）を図
ることができると共に、繰返し圧縮に対する耐久力の向
上を図って、圧縮特性および弾性を向上させることがで
きる効果がある。なお、その他の点に付いては先の第１
実施例とほぼ同様の作用、効果を奏するので、図６にお
いて前図と同一の部分には同一符号を付して、その詳し
い説明を省略する。With this structure, the foamed rubber 1 described above is used.
The mixture of No. 5 has the effects of improving the tactile sensation (eliminating the so-called rough feeling), improving the durability against repeated compression, and improving the compression characteristics and elasticity. Regarding other points, the first
Since the same actions and effects as the embodiment are obtained, the same parts in FIG. 6 as those in the previous figure are designated by the same reference numerals, and detailed description thereof will be omitted.

【００８４】（第７実施例）図７は高吸湿性シート材の
第７実施例を示し、この表皮材１６は上記下層４の構造
を次のように構成している。すなわち片面起毛状の基布
により上述の基材５…を構成し、この基材５の裏面つま
り起毛が立っていないフラットな面にウレタン樹脂等の
透湿性樹脂を塗布し、この塗布面にメチル系またはエチ
ル系セルロース粉末を噴霧して吸湿層６を形成したもの
を積層構造と成し、かつ上述同様に糸８を用いてキルテ
ィング加工を施したものである。(Seventh Embodiment) FIG. 7 shows a seventh embodiment of a highly hygroscopic sheet material, and the skin material 16 has the structure of the lower layer 4 as follows. That is, the above-mentioned base material 5 is constituted by a one-sided brushed base cloth, and a moisture-permeable resin such as urethane resin is applied to the back surface of the base material 5, that is, a flat surface on which no nap is raised, and the applied surface is methyl. A layered structure is formed by spraying a cellulose-based or ethyl-based cellulose powder to form the moisture absorption layer 6, and is quilted using the thread 8 as described above.

【００８５】このように基材５として片面起毛状の基布
を積層して用いたので、柔軟性向上を図ることができ、
また積層構造により粉末分布の均一化と粉末量確保の両
立を図ることができる。なお、その他の点については先
の第２実施例とほぼ同様の作用、効果を奏するので、図
７において前図と同一の部分には同一符号を付して、そ
の詳しい説明を省略する。Since the one-side raised fabric is used as the base material 5 in this manner, the flexibility can be improved.
Further, the layered structure makes it possible to make the powder distribution uniform and secure the powder amount at the same time. In other respects, substantially the same operation and effect as those of the second embodiment described above are achieved, and therefore, in FIG. 7, the same parts as those in the previous figure are designated by the same reference numerals, and detailed description thereof will be omitted.

【００８６】（第８実施例）図８、図９は高吸湿性シー
ト材の第８実施例を示し、この表皮材１９は通気性およ
び吸湿性または透湿性、吸湿性を有する表皮層２と、こ
の表皮層２に接着層３を介して接着された通気性、吸湿
性の下層４とを備え、該下層４は通気性、吸湿性を有す
る３枚の基材５…を備え、これら３枚の基材５…間にメ
チル系またはエチル系セルロース粉末が含有された各吸
湿層６，６を介設している。(Eighth Embodiment) FIGS. 8 and 9 show an eighth embodiment of a highly hygroscopic sheet material. This skin material 19 is a skin layer 2 having breathability and hygroscopicity or moisture permeability and hygroscopicity. And a breathable and hygroscopic lower layer 4 adhered to the skin layer 2 via an adhesive layer 3, and the lower layer 4 includes three base materials 5 having breathable and hygroscopic properties. The hygroscopic layers 6 and 6 containing methyl- or ethyl-based cellulose powder are interposed between the base materials 5 ...

【００８７】この第８実施例では、上述の基材５…を構
成する短繊維２０を図９に示すようにヒダ状に加工し
て、該短繊維２０の表面積を拡大すると共に、この短繊
維２０の表面にメチル系またはエチル系セルロース粉末
２１を分散させることで、基材５…の吸湿性を大幅に向
上させ、この分に対応して吸湿層６，６におけるメチル
系またはエチル系セルロース粉末の担持量を低減すべく
構成したものである。In the eighth embodiment, the short fibers 20 constituting the above-mentioned base material 5 are processed into a pleated shape as shown in FIG. 9 to increase the surface area of the short fibers 20 and at the same time. By dispersing the methyl-based or ethyl-based cellulose powder 21 on the surface of 20, the hygroscopicity of the base material 5 is significantly improved, and the methyl-based or ethyl-based cellulose powder in the moisture-absorbing layers 6 and 6 is correspondingly increased. It is configured to reduce the carried amount of.

【００８８】上述の吸湿層６は、メチル系またはエチル
系セルロース粉末と熱硬化性の透湿樹脂（例えばウレタ
ン系樹脂）とを混合して形成され、これら各吸湿層６，
６を基材５…間に挟持した後に、上述の透湿樹脂を熱硬
化（熱プレスによる乾燥処理）させることで、基材５…
間の吸湿層６が移動しないように構成されている。The above-mentioned moisture absorption layer 6 is formed by mixing methyl-based or ethyl-based cellulose powder and a thermosetting moisture-permeable resin (for example, urethane resin).
After sandwiching 6 between the base materials 5 ..., the above-mentioned moisture-permeable resin is thermoset (drying by hot press), so that the base materials 5 ...
The moisture absorption layer 6 between them is configured not to move.

【００８９】（第９実施例）図１０は高吸湿性シート材
の第９実施例を示し、この表皮材２２は通気性および吸
湿性または透湿性、吸湿性を有する表皮層２と、この表
皮層２に接着層３を介して接着された通気性、吸湿性の
下層４とを備え、この下層４を一層の吸湿層６により構
成している。(Ninth Embodiment) FIG. 10 shows a ninth embodiment of a highly hygroscopic sheet material. This skin material 22 is a skin layer 2 having breathability and hygroscopicity or moisture permeability and hygroscopicity, and this skin. The layer 2 is provided with a breathable and hygroscopic lower layer 4 which is adhered to the layer 2 via an adhesive layer 3, and the lower layer 4 is constituted by a single hygroscopic layer 6.

【００９０】すなわち、上述の吸湿層６は発泡前におい
てメチル系またはエチル系セルロース粉末と、セルロー
ス系発泡剤とを混合させ、この混合したものを発泡させ
ることで連通発泡層と成したものである。That is, the moisture absorption layer 6 is formed as a continuous foam layer by mixing methyl-based or ethyl-based cellulose powder and a cellulosic foaming agent before foaming and foaming the mixture. .

【００９１】このように上述の連通発泡層にメチル系ま
たはエチル系セルロース粉末を担持させても、該粉末の
形状保持機能を確保することができるので、粉末の点在
による粉末分布の不均一化、片寄り、触感悪化（所謂ご
わごわ感の発生）を防止することができる効果がある。
なお図１０において前図と同一の部分には同一符号を付
して、その詳しい説明を省略する。As described above, even if the above-mentioned continuous foam layer is loaded with the methyl-based or ethyl-based cellulose powder, the shape-retaining function of the powder can be ensured, so that the powder distribution becomes non-uniform due to the scattered powder. In addition, there is an effect that it is possible to prevent unevenness and deterioration of tactile sensation (generation of so-called rough feeling).
In FIG. 10, the same parts as those in the previous figure are designated by the same reference numerals, and detailed description thereof will be omitted.

【００９２】（第１０実施例）図１１は高吸湿性シート
材の第１０実施例を示し、この表皮材２３は通気性およ
び吸湿性または透湿性、吸湿性を有する表皮層２と、こ
の表皮層２に接着層３を介して接着された通気性、吸湿
性の下層４とを備え、この下層４は通気性、吸湿性を有
する３枚の基材５…を備え、これら３枚の基材５…間に
メチル系またはエチル系セルロース粉末が含有された各
吸湿層６，６を介設している。(Tenth Embodiment) FIG. 11 shows a tenth embodiment of a highly hygroscopic sheet material. This skin material 23 is a skin layer 2 having air permeability and hygroscopicity or moisture permeability, and this skin. The layer 2 is provided with a breathable and hygroscopic lower layer 4 which is adhered to the layer 2 via an adhesive layer 3. The lower layer 4 is provided with three breathable and hygroscopic base materials 5 ... The hygroscopic layers 6 and 6 containing methyl-based or ethyl-based cellulose powder are interposed between the materials 5.

【００９３】しかも、この第１０実施例においては３枚
の基材５，５，５のうち上側の基材５には大径の通気孔
５ａを、中間の基材５には中径の通気孔５ｂを、下側の
基材５には小径の通気孔５ｃをそれぞれ形成している。
すなわち湿気を取りたい対象に対して通気孔５ａの開孔
を大きくし、一度に多量の湿気をトラップした後に、順
次下側の層で吸湿させることで、吸湿量の大幅な改善を
図ったものである。一方、この構成の場合、性能の低い
他の吸湿剤（例えばコラーゲン、キト酸等）に代えた際
に吸湿材の性能を効率よく引き出せるので、上述のよう
な吸湿剤を用いる場合に有効である。なお、その他の点
については先の第２実施例とほぼ同様の作用、効果を奏
するので、図１１において図２と同一部分には同一符号
を付して、その詳しい説明を省略する。Moreover, in the tenth embodiment, the upper base material 5 of the three base materials 5, 5 and 5 has a large diameter vent hole 5a, and the intermediate base material 5 has a medium diameter vent hole 5a. The air holes 5b and the small-diameter air holes 5c are formed in the lower base material 5, respectively.
That is, by increasing the size of the vent hole 5a for the target to take moisture, trapping a large amount of moisture at a time, and then successively absorbing moisture in the lower layer, the moisture absorption amount is greatly improved. Is. On the other hand, in the case of this configuration, the performance of the hygroscopic material can be efficiently extracted when it is replaced with another hygroscopic agent having low performance (for example, collagen, chito acid, etc.), and therefore, it is effective when using the hygroscopic agent as described above. . In other respects, substantially the same operation and effect as those of the second embodiment described above are achieved, and therefore, in FIG. 11, the same parts as those in FIG. 2 are denoted by the same reference numerals, and detailed description thereof will be omitted.

【００９４】（第１１実施例）図１２，図１３，は高吸
湿性シート材の第１１実施例を示し、この表皮材２４は
通気性および吸湿性または透湿性、吸湿性を有する表皮
層２と、この表皮層２に接着層３を介して接着された通
気性、吸湿性の下層４とを備え、この下層４は通気性、
吸湿性を有する３枚の基材５…を備えている。(Eleventh Embodiment) FIGS. 12 and 13 show an eleventh embodiment of a highly hygroscopic sheet material. This skin material 24 is a skin layer 2 having breathability and hygroscopicity or moisture permeability and hygroscopicity. And a breathable, hygroscopic lower layer 4 adhered to the skin layer 2 via an adhesive layer 3, the lower layer 4 being breathable,
It is provided with three base materials 5 having a hygroscopic property.

【００９５】しかも、この第１１実施例においては各基
材５…に形成される通気孔２５…の大きさと、メチル系
またはエチル系セルロース粉末２６の外径とをほぼ同等
に設定し、基材５に透湿性バインダ２７を薄く塗布した
後に、上述の通気孔２５の開口位置と対向するようにメ
チル系またはエチル系セルロース粉末２６を付着させ、
積層構造に成した後に、熱プレス乾燥して上述の下層４
を構成したものである。Moreover, in the eleventh embodiment, the size of the vent holes 25 formed in each of the base materials 5 is set to be substantially equal to the outer diameter of the methyl-based or ethyl-based cellulose powder 26, and the base materials are set. After thinly applying the moisture-permeable binder 27 to 5, the methyl-based or ethyl-based cellulose powder 26 is attached so as to face the opening position of the vent hole 25,
After forming a laminated structure, it is hot-press dried to form the lower layer 4 described above.
Is configured.

【００９６】このように構成すると、メチル系またはエ
チル系セルロース粉末２６が湿気に対して接触する面積
の拡大を図ることができるので、吸湿性能のさらなる向
上を図ることができる効果がある。一方、この構成の場
合、性能の低い他の吸湿剤（例えばコラーゲン、キト酸
等）に代えた際に吸湿材の性能を効率よく引き出せるの
で、上述のような吸湿剤を用いる場合に有効である。な
お、その他の点については先の第３実施例とほぼ同様の
作用、効果を奏するので、図１２、図１３において前図
と同一の部分には同一符号を付して、その詳しい説明を
省略する。According to this structure, the area in which the methyl-based or ethyl-based cellulose powder 26 comes into contact with moisture can be increased, so that the moisture absorption performance can be further improved. On the other hand, in the case of this configuration, the performance of the hygroscopic material can be efficiently extracted when it is replaced with another hygroscopic agent having low performance (for example, collagen, chito acid, etc.), and therefore, it is effective when using the hygroscopic agent as described above. . In addition, in other respects, the same operation and effect as those of the third embodiment described above are achieved, and therefore, in FIGS. 12 and 13, the same parts as those in the previous drawings are designated by the same reference numerals and detailed description thereof will be omitted. To do.

【００９７】（第１２実施例）図１４は高吸湿性シート
材の第１２実施例を示し、この表皮材２８は通気性およ
び吸湿性または透湿性、吸湿性を有する表皮層２と、こ
の表皮層２に接着層３を介して接着された通気性、吸湿
性の下層４とを備え、一方の基材５に対してメチル系ま
たはエチル系セルロース粉末２６と非吸湿粉末バインダ
２９とを混合分散したものを噴霧し、この上に他方の基
材５を重ねた後に、熱および圧力を付加して、上述の下
層４を構成したものである。(Twelfth Embodiment) FIG. 14 shows a twelfth embodiment of a highly hygroscopic sheet material. This skin material 28 is a skin layer 2 having breathability and hygroscopicity or moisture permeability and hygroscopicity, and this skin material. An air-permeable and hygroscopic lower layer 4 adhered to the layer 2 through an adhesive layer 3 is provided, and a methyl- or ethyl-based cellulose powder 26 and a non-hygroscopic powder binder 29 are mixed and dispersed in one base material 5. The above-mentioned lower layer 4 is formed by spraying the above-mentioned material, superposing the other base material 5 thereon, and then applying heat and pressure.

【００９８】このように構成すると、粉末２６すなわち
吸湿粉末は吸湿前から吸湿後にかけて順次湿気を吸収
し、表面側から内部へ序々に膨潤して、通気孔が小とな
るが、非吸湿粉末バインダ２９は吸湿粉末２６と比較し
て膨潤しにくいため、吸湿粉末２６が膨潤しても通気孔
が小さくなりにくいので、下層４全体における吸湿粉末
２６の性能を効果的に引き出すことができる。With this structure, the powder 26, that is, the hygroscopic powder, sequentially absorbs moisture from before moisture absorption to after moisture absorption, and gradually swells from the surface side to the inside to reduce the ventilation holes, but the non-hygroscopic powder binder. Since 29 is less likely to swell than the hygroscopic powder 26, even if the hygroscopic powder 26 swells, the vent holes are unlikely to become small, so that the performance of the hygroscopic powder 26 in the entire lower layer 4 can be effectively brought out.

【００９９】本構造のものを試作して得られたデータを
図３３に示す。試作品１（点線の特性参照）は吸湿粉末
としてメチル系セルロースを７００ｇ／ｍ2 目付したも
のであり、試作品２（実線の特性参照）は吸湿粉末１７
９ｇ／ｍ2 と粉末バインダ１７９ｇ／ｍ2 とを目付した
ものである。試作品２の粉末バインダは非透湿性のもの
であれば熱可塑性、熱硬化性の何れの樹脂でもよい。例
えばメラミン樹脂フェノール粉末等が好ましい。FIG. 33 shows the data obtained by making a prototype of this structure. Prototype 1 (see dotted line characteristics) has a weight of 700 g / m 2 of methyl cellulose as a hygroscopic powder, and Prototype 2 (see solid line characteristics) is hygroscopic powder 17
And 9 g / m 2 and powder binder 179 g / m 2 is obtained by basis weight. The powder binder of prototype 2 may be either a thermoplastic resin or a thermosetting resin as long as it is impermeable to moisture. For example, melamine resin phenol powder and the like are preferable.

【０１００】すなわち図２４に吸湿粉末２６のみを用い
た比較例の吸湿前後の通気抵抗変化を点線で、吸湿粉末
２６と非吸湿粉末バインダ２９の双方を用いた実施例の
吸湿前後の通気抵抗変化を実線でそれぞれ示すように、
この実施例の通気抵抗変化は比較例のものに対して変化
量が小となり、この分、吸湿粉末２６の性能を効果的に
引き出すことができる。That is, in FIG. 24, the change in ventilation resistance before and after moisture absorption in the comparative example using only the moisture absorption powder 26 is indicated by a dotted line, and the ventilation resistance change before and after moisture absorption in the embodiment using both the moisture absorption powder 26 and the non-hygroscopic powder binder 29. As indicated by solid lines,
The air flow resistance change of this example is smaller than that of the comparative example, and the performance of the moisture absorbing powder 26 can be effectively brought out by this amount.

【０１０１】この点を図２５乃至図２８（但し図２５は
吸湿前の断面図、図２６は図２５のＡ−Ａ線矢視図、図
２７は吸湿過程の断面図、図２８は図２７のＢ−Ｂ線矢
視図である）に基づいて、さらに詳述すると、上下の基
材５，５間に挟まれる吸湿粉末２６…相間には上述の粉
末バインダ２９が位置して、これら各吸湿粉末２６，２
６間に空気通路が形成されていて、これにより湿気を含
んだ空気が各吸湿粉末２６…に達し、空気に含まれる湿
気を各吸湿粉末２６…が吸い取る。25 to 28 (where FIG. 25 is a sectional view before moisture absorption, FIG. 26 is a sectional view taken along the line AA of FIG. 25, FIG. 27 is a sectional view of the moisture absorption process, and FIG. 28 is FIG. 27). Based on the BB line of FIG. 2), the moisture absorbing powder 26 sandwiched between the upper and lower base materials 5 and 5 has the above-mentioned powder binder 29 positioned between the phases. Hygroscopic powder 26,2
An air passage is formed between 6 and the air containing moisture reaches each of the moisture absorbing powders 26 ... And the moisture absorbing powders 26 absorb the moisture contained in the air.

【０１０２】しかも、本実施例の吸湿層メカニズムは、
吸湿または通気性の基材５に近い側の吸湿粉末２６が図
２７、図２８に示すように吸湿後に水分によって膨潤し
ても、各吸湿粉末２６，２６相互間には非吸湿粉末バイ
ンダ２９…が位置しているため、空気通路の面積が減少
することを充分に抑制することができる。この結果、吸
湿粉末２６が効率的に使用されて、その目付量を減少さ
せることができ、斯る目付量の減少によりシート材非表
面の触感向上いわゆるごわごわ感の低減を図ることがで
きる効果がある。Moreover, the moisture absorbing layer mechanism of this embodiment is
27 and 28, even if the hygroscopic powder 26 on the side close to the hygroscopic or air-permeable base material 5 swells with moisture after moisture absorption, the non-hygroscopic powder binder 29 ... Is located, the reduction of the area of the air passage can be sufficiently suppressed. As a result, the moisture-absorbing powder 26 can be used efficiently, and the weight per unit area can be reduced, and the reduction in the weight per unit area has the effect of improving the tactile feel of the non-surface of the sheet material, that is, reducing the so-called rough feeling. is there.

【０１０３】一方、この構成の場合、性能の低い他の吸
湿剤（例えばコラーゲン、キト酸等）に代えた際に吸湿
材の性能を効率よく引き出せるので、上述のような吸湿
剤を用いる場合に有効である。On the other hand, in the case of this constitution, the performance of the hygroscopic material can be efficiently brought out when it is replaced with another hygroscopic material having low performance (eg, collagen, chito acid, etc.). It is valid.

【０１０４】また上述の基材５と粉末２６およびバイン
ダ２９の層とを上下積層構造に成して、さらなる性能向
上を図ってもよい。加えて最表層の表皮層２により触感
向上（所謂ごわごわ感低減）を図ることができる。な
お、上述の吸湿粉末２６に代えて吸湿性の短繊維（合成
樹脂で吸湿性を向上させた繊維状のものや、ウール等の
粉砕品すなわち粉になっていても性状は繊維状のもの）
を用いてもよい。Further, the above-mentioned base material 5 and the layers of the powder 26 and the binder 29 may be formed in a vertically laminated structure to further improve the performance. In addition, the outermost skin layer 2 can improve the tactile sensation (so-called reduction of stiffness). It should be noted that, instead of the above-described hygroscopic powder 26, hygroscopic short fibers (fibrous material having improved hygroscopicity with a synthetic resin, or pulverized product such as wool, that is, fibrous even if powdered)
May be used.

【０１０５】（第１３実施例）図１５は高吸湿性シート
材の第１３実施例を示し、この表皮材３０はメチル系ま
たはエチル系セルロース粉末が配設された下層４（但し
同図乃至図２３においては下層４の構造を概略的に示し
ている）の上側に水の侵入を遮断する分離手段として、
水と水蒸気とを分離する分離膜３１を配設し、さらに、
この分離膜３１の上側に非透湿性膜３２を配設してい
る。(Thirteenth embodiment) FIG. 15 shows a thirteenth embodiment of a highly hygroscopic sheet material, and this skin material 30 is a lower layer 4 on which a methyl-based or ethyl-based cellulose powder is provided (however, the same drawings to FIG. 23, the structure of the lower layer 4 is schematically shown) as a separating means for blocking the invasion of water on the upper side,
A separation membrane 31 for separating water and water vapor is provided, and further,
A moisture impermeable membrane 32 is arranged above the separation membrane 31.

【０１０６】ここで、上述の非透湿性膜３２としてはポ
リプロピレンや塩化ビニール等の膜を用い、この非透湿
性膜３２それ自体は吸湿性がないので、この膜３２に孔
径が１０μｍ以下で可及的小さい細孔３３…を形成し、
多数の細孔３３…の開孔率を１．０〜５０．０％の範囲
内で可及的１．０％に近づける。一方、上述の分離膜３
１としてはセロハンやフッ素系不織布等を用いる。Here, a film of polypropylene, vinyl chloride or the like is used as the above-mentioned non-moisture permeable film 32. Since the non-moisture permeable film 32 itself does not have a hygroscopic property, the film 32 can have a pore diameter of 10 μm or less. Forming the smallest pores 33 ...
The open area ratio of the large number of pores 33 is made as close to 1.0% as possible within the range of 1.0 to 50.0%. On the other hand, the separation membrane 3 described above
As 1 is used cellophane, fluorine-based non-woven fabric or the like.

【０１０７】また上述の非透湿性膜３２の裏側には下向
きの凸部３２ａを一体形成する一方、上述の分離膜３１
の上部には上向きの凹部３１ａを形成して、凸部３２ａ
および凹部３１ａを互に嵌合させている。A downward convex portion 32a is integrally formed on the back side of the moisture impermeable membrane 32, while the separation membrane 31 is formed.
An upward concave portion 31a is formed on the upper part of the convex portion 32a
And the concave portions 31a are fitted to each other.

【０１０８】このように上述の下層４より上側にメチル
系またはエチル系セルロース粉末への水の到達を防止
し、かつ水蒸気の到達を許容する防水手段（さらに詳し
くは水の侵入を遮断する分離手段としての分離膜３１）
を設けたので、吸湿層６（前図参照）を含む下層４より
上部の層で水を遮断することができる。この結果、例え
ばコップの水を多量にこぼした様な場合にはメチル系ま
たはエチル系セルロース粉末が一度に多量の水分を吸収
して、これら粉末が溶けて固り、圧縮特性などの他特性
が悪化するが、このような問題点を解消することができ
る。As described above, a waterproofing means for preventing the water from reaching the methyl-based or ethyl-based cellulose powder above the lower layer 4 and allowing the water vapor to reach (more specifically, a separating means for blocking the intrusion of water). Separation membrane 31)
Since it is provided, water can be blocked by the layer above the lower layer 4 including the moisture absorption layer 6 (see the previous figure). As a result, for example, when a large amount of water in a cup is spilled, the methyl-based or ethyl-based cellulose powder absorbs a large amount of water at once, and the powder is melted and solidified. Although worse, it is possible to solve such a problem.

【０１０９】また最表層に位置する非透湿性膜３２に対
して形成された細孔３３の孔径を１０μｍ以下に設定し
たので、水分の侵入速度を遅くすることができる。さら
に上述の細孔３３の開口率を１．０〜５０．０％の範囲
内に設定したので、吸湿性の確保と強度維持による信頼
性の確保との両立を図ることができる。すなわち、それ
ぞれの開口率をパラメータとして経過時間に対する吸湿
量の特性を図３４に示すように、開口率が１．０％未満
では充分な吸湿量の確保が困難となり。逆に開口率が５
０．０％を超過する場合には吸湿量の確保はできても、
強度が低下することにより、信頼性が悪化する。このた
め、細孔３３の開口率を１．０〜５０．０％の範囲内に
おいて可及的１，０％に近づけることで、吸湿性の確保
と強度維持による信頼性の確保との両立を図ることがで
きる。Further, since the pore diameter of the pores 33 formed in the moisture impermeable film 32 located at the outermost layer is set to 10 μm or less, the moisture infiltration rate can be slowed down. Furthermore, since the aperture ratio of the pores 33 is set within the range of 1.0 to 50.0%, it is possible to achieve both hygroscopicity and reliability by maintaining strength. That is, as shown in FIG. 34, which shows the characteristics of the moisture absorption amount with respect to the elapsed time using each aperture ratio as a parameter, it is difficult to secure a sufficient moisture absorption amount when the aperture ratio is less than 1.0%. Conversely, the aperture ratio is 5
If it exceeds 0.0%, it is possible to secure the amount of moisture absorption,
The reduction in strength deteriorates reliability. Therefore, by making the aperture ratio of the pores 33 as close as possible to 1.0% within the range of 1.0 to 50.0%, it is possible to secure both hygroscopicity and reliability by maintaining strength. Can be planned.

【０１１０】しかも、この第１３実施例においては、上
述の如き凹凸構造と成したので、細孔３３から侵入速度
が遅延されながら侵入する水は分離膜３１でそれ以下の
層への侵入が遮断されると共に、上記凹凸構造により蒸
気の分散性が向上する効果がある。すなわち、蒸気は分
離膜３１上面において分散するので、分散性の向上を図
ることができる。Moreover, in the thirteenth embodiment, since the uneven structure is formed as described above, the water that invades from the pores 33 while the invasion speed is delayed is blocked by the separation membrane 31 from invading the layers below it. At the same time, the concavo-convex structure has an effect of improving vapor dispersibility. That is, since the vapor is dispersed on the upper surface of the separation membrane 31, the dispersibility can be improved.

【０１１１】（第１４実施例）図１６は高吸湿性シート
材の第１４実施例を示し、この表皮材３４は上述の非透
湿性膜３２の裏側に一体形成された下向きの凸部３２ａ
を下層４に直接接触させたものである。このように構成
しても先の第１３実施例とほぼ同様の作用、効果を奏す
るので、図１６において図１５と同一の部分には同一符
号を付して、その詳しい説明を省略する。(Fourteenth Embodiment) FIG. 16 shows a fourteenth embodiment of a highly hygroscopic sheet material, and this skin material 34 is a downward convex portion 32a integrally formed on the back side of the above-mentioned moisture impermeable film 32.
Is in direct contact with the lower layer 4. Even with this structure, substantially the same operation and effect as those of the thirteenth embodiment described above can be obtained. Therefore, in FIG. 16, the same parts as those in FIG. 15 are designated by the same reference numerals, and detailed description thereof will be omitted.

【０１１２】（第１５実施例）図１７は高吸湿性シート
材の第１５実施例を示し、この表皮材３５はメチル系ま
たはエチル系セルロース粉末が配設された下層４の上側
に上述同様に水の侵入を遮断する分離手段として、水と
水蒸気とを分離する分離膜３１を配設し、さらに、この
分離膜３１の上側に透湿ウレタン樹脂などの透湿性膜３
６を配設している。(Fifteenth Embodiment) FIG. 17 shows a fifteenth embodiment of a highly hygroscopic sheet material, and this skin material 35 is formed on the upper side of the lower layer 4 on which the methyl-based or ethyl-based cellulose powder is disposed in the same manner as described above. As a separating means for blocking the invasion of water, a separation membrane 31 for separating water and water vapor is provided, and a moisture permeable membrane 3 such as a moisture permeable urethane resin is provided above the separation membrane 31.
6 are arranged.

【０１１３】また上述の透湿性膜３６の裏側には下向き
の凸部３６ａを一体形成する一方、上述の分離膜３１の
上部には上向きの凹部３１ａを形成して、凸部３６ａお
よび凹部３１ａを互に嵌合させている。Further, a downward convex portion 36a is integrally formed on the back side of the moisture permeable film 36, while an upward concave portion 31a is formed on the upper portion of the separation film 31 to form the convex portion 36a and the concave portion 31a. They are fitted together.

【０１１４】さらに上述の透湿性膜３６において凸部３
６ａが形成されていない部位の膜厚を１０μｍ〜５０μ
ｍの範囲内に設定して透湿性を確保する一方、凸部３６
ａが形成された部位においては水分の透湿抵抗を増大さ
せることで、水の侵入速度を遅らせる遅延手段を構成し
ている。Further, in the moisture permeable film 36, the convex portion 3 is formed.
The thickness of the portion where 6a is not formed is 10 μm to 50 μm.
While the moisture permeability is ensured by setting it within the range of m, the convex portion 36
By increasing the moisture permeation resistance of water at the portion where a is formed, a delay means for delaying the water intrusion speed is configured.

【０１１５】このように上述の下層４より上側にメチル
系またはエチル系セルロース粉末への水の到達を防止
し、かつ水蒸気の到達を許容する防水手段（さらに詳し
くは水の侵入を遮断する分離手段としての分離膜３１）
を設けたので、吸湿層６（前図参照）を含む下層４より
上部の層で水を遮断することができる。この結果、メチ
ル系またはエチル系セルロース粉末が一度に多量の水分
を吸収して、これら粉末が溶けて固り、圧縮特性が悪化
するという問題点を解消することができる。[0115] As described above, a waterproofing means for preventing water from reaching the methyl-based or ethyl-based cellulose powder above the lower layer 4 and allowing water vapor to reach (more specifically, a separating means for blocking intrusion of water). Separation membrane 31)
Since it is provided, water can be blocked by the layer above the lower layer 4 including the moisture absorption layer 6 (see the previous figure). As a result, it is possible to solve the problem that the methyl-based or ethyl-based cellulose powder absorbs a large amount of water at a time, the powder melts and solidifies, and the compression characteristics deteriorate.

【０１１６】また上述の透湿性膜３６の凸部３６ａが形
成された部位を、水の侵入速度を遅らせる遅延手段に設
定したので、水分の侵入速度を遅くすることができる。
加えて、この第１５実施例においては上述の如き凹凸構
造と成したので、透湿性膜３６から侵入速度が遅延され
ながら侵入する水は分離膜３１でそれ以下の層への侵入
が遮断されると共に、上記凹凸構造により蒸気の分散性
が向上する効果がある。Further, since the portion of the moisture permeable film 36 where the convex portion 36a is formed is set as the delay means for delaying the water invasion speed, the water invasion speed can be slowed down.
In addition, in the fifteenth embodiment, since the uneven structure is formed as described above, water that infiltrates from the moisture permeable membrane 36 while the invasion speed is delayed is blocked by the separation membrane 31 from entering the layers below it. At the same time, the uneven structure has the effect of improving the dispersibility of steam.

【０１１７】（第１６実施例）図１８は高吸湿性シート
材の第１６実施例を示し、この表皮材３７は上述の透湿
性膜３６の裏側に一体形成された下向きの凸部３６ａを
下層４に直接接触させたものである。このように構成し
ても先の第１５実施例とほぼ同様の作用、効果を奏する
ので、図１８において図１７と同一部分には同一符号を
付して、その詳しい説明を省略する。(Sixteenth Embodiment) FIG. 18 shows a sixteenth embodiment of a highly hygroscopic sheet material, and this skin material 37 has a downward convex portion 36a integrally formed on the back side of the moisture permeable film 36 as a lower layer. 4 was brought into direct contact. Even with this structure, substantially the same operation and effect as those of the 15th embodiment described above can be obtained. Therefore, in FIG. 18, the same parts as those in FIG. 17 are designated by the same reference numerals, and the detailed description thereof will be omitted.

【０１１８】（第１７実施例）図１９は高吸湿性シート
材の第１７実施例を示し、この表皮材３８はメチル系ま
たはエチル系セルロース粉末が配設された下層４の上面
部に凹凸部４６を形成する一方、透湿ウレタン樹脂など
の透湿性膜３６を設け、この透湿性膜３６の裏面側に凹
凸部３６ｂを一体形成し、これら各凹凸部４ｂ，３６ｂ
が互に嵌合されるように上述の下層４の上側に透湿性膜
３６を配設して、一体化したものである。(Seventeenth Embodiment) FIG. 19 shows a seventeenth embodiment of a highly hygroscopic sheet material, and this skin material 38 is a concavo-convex portion on the upper surface of the lower layer 4 on which the methyl-based or ethyl-based cellulose powder is provided. While forming 46, a moisture permeable film 36 such as a moisture permeable urethane resin is provided, and an uneven portion 36b is integrally formed on the back surface side of the moisture permeable film 36, and these uneven portions 4b and 36b are formed.
The moisture permeable film 36 is provided on the upper side of the lower layer 4 so that they are fitted to each other and are integrated.

【０１１９】ここで、上述の透湿性膜３６の凹部の厚さ
は１０〜５０μｍの範囲に設定し、凸部を、水の侵入速
度を遅らせる遅延手段に設定している。このように上述
の下層４より上側にメチル系またはエチル系セルロース
粉末への水の到達を防止し、かつ水蒸気の到達を許容す
る防水手段（さらに詳しくは水の侵入速度を遅らせる遅
延手段）としての透湿性膜３６の凸部を形成したので、
水の侵入速度を遅らせて、メチル系またはエチル系セル
ロース粉末の圧縮特性悪化を防止することができる効果
がある。Here, the thickness of the concave portion of the moisture permeable film 36 is set in the range of 10 to 50 μm, and the convex portion is set as the delay means for delaying the water intrusion speed. As described above, as a waterproofing means (more specifically, a delaying means for delaying the water intrusion speed) that prevents water from reaching the methyl-based or ethyl-based cellulose powder above the lower layer 4 and allows the water vapor to reach. Since the convex portion of the moisture permeable film 36 is formed,
There is an effect that the penetration speed of water can be delayed to prevent the compression characteristics of the methyl-based or ethyl-based cellulose powder from being deteriorated.

【０１２０】また侵入速度が遅延されながら透湿する水
分を上述の凹凸構造により分散させるので、分散性の向
上を図ることができる。さらに上述の透湿性膜３６にお
ける凸部の厚さを任意に設定することで、水分透湿量を
制御することができる。Further, since the moisture that permeates while the invasion speed is delayed is dispersed by the uneven structure described above, the dispersibility can be improved. Further, the moisture permeation amount can be controlled by arbitrarily setting the thickness of the convex portion of the moisture permeable film 36 described above.

【０１２１】（第１８実施例）図２０は高吸湿性シート
材の第１８実施例を示し、この表皮材３９は下側に接着
層（図示せず）を介してメチル系またはエチル系セルロ
ース粉末が配設された下層４を一体的に備えた表皮層２
の上面に、水接触角（contact angle)が大きいシリコン
樹脂、フッ素樹脂などの溌水コーティング層４０を形成
すると共に、この溌水コーティング層４０それ自体には
透湿性がない関係上、上述の溌水コーティング層４０お
よび表皮層２に孔径が１０μｍ以下で可及的小径の細孔
４１…を形成し、さらに、複数の細孔４１…の開口率を
１．０％〜５０．０％の範囲内で可及的１．０％に近づ
けたものである。(Eighteenth Embodiment) FIG. 20 shows an eighteenth embodiment of a highly hygroscopic sheet material. This skin material 39 is a methyl-based or ethyl-based cellulose powder with an adhesive layer (not shown) on the lower side. Skin layer 2 integrally provided with a lower layer 4 in which
A water repellent coating layer 40 such as a silicone resin or a fluororesin having a large water contact angle is formed on the upper surface of the water repellent coating layer 40. Since the water repellent coating layer 40 itself has no moisture permeability, In the water coating layer 40 and the skin layer 2, pores with a pore diameter of 10 μm or less and a diameter as small as possible are formed, and the aperture ratio of the plurality of pores 41 is in the range of 1.0% to 50.0%. It is as close as possible to 1.0%.

【０１２２】このように上述の下層４により上側にメチ
ル系またはエチル系セルロース粉末への水の到達を防止
し、かつ水蒸気の到達を許容する防水手段（さらに詳し
くは水接触角が大きい溌水コーティング層４０を設けた
ので、吸湿層６を含む下層４より上部の層すなわち溌水
コーティング層４０）で水を遮断することができる。こ
の結果、例えばコップの水を多量にこぼした様な場合に
はメチル系またはエチル系セルロース粉末が一度に多量
の水分を吸収して、これら粉末が溶けて固り、圧縮特性
が悪化するが、このような問題点を解消することができ
る。As described above, the lower layer 4 prevents water from reaching the methyl-based or ethyl-based cellulose powder on the upper side and allows water vapor to reach (more specifically, a water repellent coating having a large water contact angle). Since the layer 40 is provided, water can be blocked by the layer above the lower layer 4 including the moisture absorption layer 6, that is, the water repellent coating layer 40). As a result, for example, when a large amount of water in a cup is spilled, the methyl-based or ethyl-based cellulose powder absorbs a large amount of water at once, and the powder is melted and solidified, but the compression property is deteriorated, Such a problem can be solved.

【０１２３】また孔径が１０μｍ以下の細孔４１を形成
したで、この細孔４１を通して侵入する一部の水分の侵
入速度を遅くすることがでる。さらに上述の細孔４１の
開口率を１．０〜５０．０％の範囲内に設定したので、
吸湿性の確保と強度維持による信頼性の確保との両立を
図ることができる。Further, since the pores 41 having a pore diameter of 10 μm or less are formed, it is possible to slow down the penetration rate of a part of the moisture that penetrates through the pores 41. Furthermore, since the aperture ratio of the pores 41 is set within the range of 1.0 to 50.0%,
It is possible to achieve both hygroscopicity and reliability by maintaining strength.

【０１２４】（第１９実施例）図２１は高吸湿性シート
材の第１９実施例を示し、この表皮材４２はメチル系ま
たはエチル系セルロース粉末が配設された下層４を構成
する上側の基材５（図１参照）の上面に対して水接触角
が大きいシリコン樹脂、フッ素樹脂などの溌水コーティ
ング層４０を形成し、この溌水コーティング層４０の上
面に表皮層２を一体的に配設すると共に、この表皮層２
に孔径が１０μｍ以下で可及的小径の細孔４３…を形成
し、さらに複数の細孔４３…の開口率を１．０％〜５
０．０％の範囲内で可及的１．０％に近づけたものであ
る。(Nineteenth Embodiment) FIG. 21 shows a nineteenth embodiment of a highly hygroscopic sheet material, and this skin material 42 is an upper substrate which constitutes a lower layer 4 in which a methyl-based or ethyl-based cellulose powder is disposed. A water repellent coating layer 40 having a large water contact angle with respect to the upper surface of the material 5 (see FIG. 1) is formed, and the skin layer 2 is integrally disposed on the water repellent coating layer 40. It is installed and this skin layer 2
To form pores 43 having a pore diameter of 10 μm or less and having the smallest possible diameter. Further, the aperture ratio of the plurality of pores 43 is 1.0% to 5%.
It is as close to 1.0% as possible within the range of 0.0%.

【０１２５】このように構成しても、図２０で示した第
１８実施例とほぼ同様の作用、効果を奏するので、図２
１において図２０と同一の部分には同一符号を付して、
その詳しい説明を省略する。Even with this structure, the same action and effect as those of the eighteenth embodiment shown in FIG. 20 can be obtained.
20, the same parts as those in FIG.
The detailed description is omitted.

【０１２６】（第２０実施例）図２２は高吸湿性シート
材の第２０実施例を示し、この表皮材４２は上述の細孔
４３を有する表皮層２と、メチル系またはエチル系セル
ロース粉末が配設された下層４との間に、例えば不織布
などの合計３層の基布層４５…を介設し、この積層構造
の基布層４５…に対して上側層から下側層にいくに従っ
て順次小径となる細孔径の孔（図示せず）を形成したも
のである。(Twentieth Embodiment) FIG. 22 shows a twentieth embodiment of a highly hygroscopic sheet material. This skin material 42 is composed of the skin layer 2 having the pores 43 and the methyl-based or ethyl-based cellulose powder. A total of three base fabric layers 45, such as a non-woven fabric, are interposed between the lower layer 4 and the lower layer 4. The base fabric layers 45 of this laminated structure are arranged from the upper layer to the lower layer. The holes (not shown) each having a smaller diameter are formed.

【０１２７】このように構成すると、上述の細孔４３か
ら基布層４５に侵入した水は順次通気抵抗が大となる基
布層４５の孔により、順次侵入速度が遅延されると共
に、侵入途中において遮断されるので、メチル系または
エチル系セルロース粉末の圧縮特性悪化を防止すること
ができる効果がある。With this structure, the water that has entered the base cloth layer 45 through the above-described pores 43 has a gradually increasing airflow resistance, and the holes in the base cloth layer 45 gradually delay the invasion speed while the water is in the process of entering. Since it is blocked in step 1, there is an effect that it is possible to prevent the compression characteristic of the methyl-based or ethyl-based cellulose powder from being deteriorated.

【０１２８】（第２１実施例）図２３は高吸湿性シート
材の第２１実施例を示し、この表皮材４６は、表皮層２
と、メチル系またはエチル系セルロース粉末が配設され
た下層４との間に、例えばポリプロピレンやポリエチレ
ン等の熱可塑性フィルム層４７を介設し、このフィルム
層４７に孔径が１０μｍ以下で可及的小径の細孔４８を
形成し、かつ細孔４８の開口率を１．０〜５０．０％の
範囲内で可及的１．０％に近づける一方、上述の表皮層
２の層厚を５０μｍ以下に設定したものである。(Twenty-first Embodiment) FIG. 23 shows a twenty-first embodiment of a highly hygroscopic sheet material, and the skin material 46 is the skin layer 2.
And a lower layer 4 on which a methyl-based or ethyl-based cellulose powder is disposed, a thermoplastic film layer 47 made of, for example, polypropylene or polyethylene is interposed, and the film layer 47 has a pore diameter of 10 μm or less as much as possible. The small-diameter pores 48 are formed, and the opening ratio of the pores 48 is made as close as possible to 1.0% within the range of 1.0 to 50.0%, while the layer thickness of the skin layer 2 is 50 μm. It is set as follows.

【０１２９】このように構成すると、上述の表皮層２と
しての所定の摩擦係数を有する材料が使用でき、かつフ
ィルム層４７に形成した細孔４８により水の侵入速度を
遅らせることができるので、メチル系またはエチル系セ
ルロース粉末の圧縮特性悪化を防止することができる効
果がある。With this structure, a material having a predetermined coefficient of friction can be used as the above-mentioned skin layer 2, and the pores 48 formed in the film layer 47 can slow the water penetration rate. It is possible to prevent the compression characteristics of the cellulose-based or ethyl-based cellulose powder from being deteriorated.

【０１３０】また上述の細孔４８の開口率を１．０〜５
０．０％の範囲内に設定したので、吸湿性の確保と強度
維持による信頼性の確保との両立を図ることができる。Further, the aperture ratio of the above-mentioned pores 48 is set to 1.0-5.
Since it is set within the range of 0.0%, it is possible to secure both hygroscopicity and reliability by maintaining strength.

【０１３１】この発明の構成と、上述の実施例との対応
において、この発明の透湿性樹脂層（請求項１２参照）
は、実施例の透湿性膜３６に対応するも、この発明は、
上述の実施例の構成のみに限定されるものではない。In the correspondence between the constitution of the present invention and the above-mentioned embodiment, the moisture-permeable resin layer of the present invention (see claim 12).
Corresponds to the moisture permeable membrane 36 of the embodiment, but the present invention
It is not limited to the configuration of the above embodiment.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の高吸湿性シート材の第１実施例を示す
断面図。FIG. 1 is a cross-sectional view showing a first embodiment of a highly hygroscopic sheet material of the present invention.

【図２】本発明の高吸湿性シート材の第２実施例を示す
断面図。FIG. 2 is a cross-sectional view showing a second embodiment of the highly hygroscopic sheet material of the present invention.

【図３】本発明の高吸湿性シート材の第３実施例を示す
断面図。FIG. 3 is a sectional view showing a third embodiment of the highly hygroscopic sheet material of the present invention.

【図４】本発明の高吸湿性シート材の第４実施例を示す
断面図。FIG. 4 is a sectional view showing a fourth embodiment of the highly hygroscopic sheet material of the present invention.

【図５】本発明の高吸湿性シート材の第５実施例を示す
断面図。FIG. 5 is a sectional view showing a fifth embodiment of the highly hygroscopic sheet material of the present invention.

【図６】本発明の高吸湿性シート材の第６実施例を示す
断面図。FIG. 6 is a sectional view showing a sixth embodiment of the highly hygroscopic sheet material of the present invention.

【図７】本発明の高吸湿性シート材の第７実施例を示す
断面図。FIG. 7 is a cross-sectional view showing a seventh embodiment of the highly hygroscopic sheet material of the present invention.

【図８】本発明の高吸湿性シート材の第８実施例を示す
断面図。FIG. 8 is a sectional view showing an eighth embodiment of the highly hygroscopic sheet material of the present invention.

【図９】短繊維の拡大図。FIG. 9 is an enlarged view of short fibers.

【図１０】本発明の高吸湿性シート材の第９実施例を示
す断面図。FIG. 10 is a sectional view showing a ninth embodiment of the highly hygroscopic sheet material of the present invention.

【図１１】本発明の高吸湿性シート材の第１０実施例を
示す断面図。FIG. 11 is a sectional view showing a tenth embodiment of the highly hygroscopic sheet material of the present invention.

【図１２】本発明の高吸湿性シート材の第１１実施例を
示す断面図。FIG. 12 is a sectional view showing an eleventh embodiment of a highly hygroscopic sheet material of the present invention.

【図１３】通気孔と粉末との対応関係を示す部分拡大
図。FIG. 13 is a partially enlarged view showing a correspondence relationship between ventilation holes and powder.

【図１４】本発明の高吸湿性シート材の第１２実施例を
示す断面図。FIG. 14 is a sectional view showing a twelfth embodiment of a highly hygroscopic sheet material of the present invention.

【図１５】本発明の高吸湿性シート材の第１３実施例を
示す断面図。FIG. 15 is a sectional view showing a thirteenth embodiment of a highly hygroscopic sheet material of the present invention.

【図１６】本発明の高吸湿性シート材の第１４実施例を
示す断面図。FIG. 16 is a sectional view showing a fourteenth embodiment of a highly hygroscopic sheet material of the present invention.

【図１７】本発明の高吸湿性シート材の第１５実施例を
示す断面図。FIG. 17 is a sectional view showing a fifteenth embodiment of the highly hygroscopic sheet material of the present invention.

【図１８】本発明の高吸湿性シート材の第１６実施例を
示す断面図。FIG. 18 is a sectional view showing a sixteenth embodiment of a highly hygroscopic sheet material of the present invention.

【図１９】本発明の高吸湿性シート材の第１７実施例を
示す断面図。FIG. 19 is a sectional view showing a seventeenth embodiment of a highly hygroscopic sheet material of the present invention.

【図２０】本発明の高吸湿性シート材の第１８実施例を
示す断面図。FIG. 20 is a sectional view showing an eighteenth embodiment of a highly hygroscopic sheet material of the present invention.

【図２１】本発明の高吸湿性シート材の第１９実施例を
示す断面図。FIG. 21 is a sectional view showing a nineteenth embodiment of a highly hygroscopic sheet material of the present invention.

【図２２】本発明の高吸湿性シート材の第２０実施例を
示す断面図。FIG. 22 is a sectional view showing a twentieth embodiment of the highly hygroscopic sheet material of the present invention.

【図２３】本発明の高吸湿性シート材の第２１実施例を
示す断面図。FIG. 23 is a sectional view showing a 21st embodiment of the highly hygroscopic sheet material of the present invention.

【図２４】吸湿前後における通気抵抗変化を示す特性
図。FIG. 24 is a characteristic diagram showing changes in ventilation resistance before and after moisture absorption.

【図２５】本発明の吸湿層メカニズムを示す吸湿前の断
面図。FIG. 25 is a cross-sectional view showing a moisture absorbing layer mechanism of the present invention before moisture absorption.

【図２６】図２５のＡ−Ａ線矢視断面図。26 is a cross-sectional view taken along the line AA of FIG. 25.

【図２７】吸湿過程における断面図。FIG. 27 is a cross-sectional view in the moisture absorption process.

【図２８】図２７のＢ−Ｂ線矢視断面図。28 is a cross-sectional view taken along the line BB of FIG.

【図２９】比較例の吸湿層メカニズムを示す吸湿前の断
面図。FIG. 29 is a cross-sectional view showing a moisture absorbing layer mechanism of a comparative example before moisture absorption.

【図３０】図２９のＣ−Ｃ線矢視断面図。30 is a cross-sectional view taken along the line CC of FIG. 29.

【図３１】比較例の吸湿過程における断面図。FIG. 31 is a cross-sectional view showing a moisture absorption process of a comparative example.

【図３２】図３１のＤ−Ｄ線矢視断面図。32 is a cross-sectional view taken along the line DD of FIG.

【図３３】第１２実施例の吸湿特性を示す説明図。FIG. 33 is an explanatory diagram showing the moisture absorption characteristics of the twelfth embodiment.

【図３４】開口率に対する吸湿量の関係を示す特性図。FIG. 34 is a characteristic diagram showing the relationship between the opening ratio and the amount of moisture absorption.

【図３５】各吸湿剤の吸湿および放湿特性図。FIG. 35 is a characteristic diagram of moisture absorption and moisture release of each moisture absorbent.

【図３６】経過時間に対する吸湿量の関係を示す特性
図。FIG. 36 is a characteristic diagram showing the relationship between the amount of moisture absorption and the elapsed time.

【図３７】従来の天然セルロース含有複合繊維を示す断
面図。FIG. 37 is a cross-sectional view showing a conventional natural cellulose-containing conjugate fiber.

【図３８】従来の天然セルロース含有複合繊維の吸湿、
放湿特性図。FIG. 38: Moisture absorption of conventional natural cellulose-containing composite fiber,
Dehumidification characteristic diagram.

【符号の説明】[Explanation of symbols]

１，９，１０，１１，１２，１４，１６，１９，２２，
２３，２４，２８…表皮材 ３０，３４，３５，３７，３８，３９，４２，４４，４
６…表皮材 ２…表皮層 ４…下層 ５…基材 ６…吸湿層 ２６…吸湿粉末 ２９…粉末バインダ ３１…分離膜 ３３，４１．４３，４８…細孔 ３６…透湿性膜 ４０…溌水コーティング層1, 9, 10, 11, 12, 14, 16, 19, 22,
23, 24, 28 ... Skin material 30, 34, 35, 37, 38, 39, 42, 44, 4
6 ... Skin material 2 ... Skin layer 4 ... Lower layer 5 ... Base material 6 ... Hygroscopic layer 26 ... Hygroscopic powder 29 ... Powder binder 31 ... Separation membrane 33, 41.43, 48 ... Pore 36 ... Moisture permeable membrane 40 ... Water repellent Coating layer

───────────────────────────────────────────────────── フロントページの続き (72)発明者 梶川 浩子 広島県安芸郡府中町新地３番１号 マツダ 株式会社内 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Hiroko Kajikawa 3-1, Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Mazda Motor Corporation

Claims (16)

【特許請求の範囲】[Claims] 【請求項１】メチル系またはエチル系セルロース粉末が
含有された表皮材を備えた高吸湿性シート材。1. A highly hygroscopic sheet material provided with a skin material containing a methyl-based or ethyl-based cellulose powder. 【請求項２】上記表皮材は通気・吸湿性または透湿・吸
湿性の表皮層と、通気・吸湿性の下層とを備え、該下層
と上記表皮層との間に、メチル系またはエチル系セルロ
ース粉末が含有された吸湿層を配設した請求項１記載の
高吸湿性シート材。2. The skin material comprises a breathable / hygroscopic or moisture-permeable / hygroscopic skin layer and a breathable / hygroscopic lower layer, and a methyl-based or ethyl-based skin layer is provided between the lower layer and the skin layer. The highly hygroscopic sheet material according to claim 1, wherein a hygroscopic layer containing cellulose powder is provided. 【請求項３】上記表皮材は通気・吸湿性または透湿・吸
湿性の表皮層と、通気・吸湿性の下層とを備え、該下層
にメチル系またはエチル系セルロース粉末が担持された
請求項１記載の高吸湿性シート材。3. The skin material comprises a breathable / hygroscopic or moisture-permeable / hygroscopic skin layer and a breathable / hygroscopic lower layer, and the lower layer carries a methyl-based or ethyl-based cellulose powder. The highly hygroscopic sheet material according to 1. 【請求項４】上記下層は通気性、吸湿性を有する２枚の
基材を備え、これら２枚の基材間にメチル系またはエチ
ル系セルロース粉末が含有された吸湿層を介設した請求
項３記載の高吸湿性シート材。4. The lower layer comprises two base materials having air permeability and hygroscopicity, and a hygroscopic layer containing a methyl-based or ethyl-based cellulose powder is interposed between the two base materials. The highly hygroscopic sheet material according to item 3. 【請求項５】上記複数の基材と、これら基材間に介設さ
れる複数の吸湿層とで積層構造と成した請求項４記載の
高吸湿性シート材。5. The highly hygroscopic sheet material according to claim 4, wherein the plurality of base materials and a plurality of moisture absorption layers interposed between the base materials have a laminated structure. 【請求項６】通気性、吸湿性を有する基材間に介設され
た吸湿層の基材間での移動を防止するように、基材のキ
ルティング加工手段もしくは吸湿層の透湿樹脂による接
着固定手段の何れか一方の移動防止手段が施された請求
項４もしくは５記載の高吸湿性シート材。6. A quilting means for substrates or a moisture-permeable resin for bonding the moisture absorption layers so as to prevent movement of the moisture absorption layers interposed between the substrates having air permeability and hygroscopicity. The highly hygroscopic sheet material according to claim 4 or 5, which is provided with a movement preventing means of either one of the fixing means. 【請求項７】メチル系またはエチル系セルロース粉末が
配設された部位より表皮側に、メチル系またはエチル系
セルロース粉末への水の到達を防止し、かつ水蒸気の到
達を許容する防水手段を設けた請求項１記載の高吸湿性
シート材。7. A waterproofing means is provided on the epidermal side of the portion where the methyl-based or ethyl-based cellulose powder is disposed to prevent water from reaching the methyl-based or ethyl-based cellulose powder and to permit water vapor to reach. The highly hygroscopic sheet material according to claim 1. 【請求項８】上記防水手段は水の侵入を遮断する分離手
段により構成した請求項７記載の高吸湿性シート材。8. The highly hygroscopic sheet material according to claim 7, wherein said waterproofing means is constituted by a separating means for blocking intrusion of water. 【請求項９】上記防水手段は水の侵入速度を遅らせる遅
延手段により構成した請求項７記載の高吸湿性シート
材。9. The highly hygroscopic sheet material according to claim 7, wherein said waterproofing means is constituted by a delaying means for delaying the invasion speed of water. 【請求項１０】上記分離手段は水と水蒸気とを分離する
分離膜により構成された請求項８記載の高吸湿性シート
材。10. The highly hygroscopic sheet material according to claim 8, wherein said separating means is composed of a separation membrane for separating water and water vapor. 【請求項１１】表層に孔径が１０μｍ以下の細孔を形成
し、該細孔により遅延手段を構成した請求項９記載の高
吸湿性シート材。11. The highly hygroscopic sheet material according to claim 9, wherein pores having a pore diameter of 10 μm or less are formed in the surface layer, and the delay means is constituted by the pores. 【請求項１２】表皮材の最表面に透湿性樹脂層を形成す
ると共に、この透湿性樹脂層の裏面に凹凸部を形成した
請求項８もしくは９記載の高吸湿性シート材。12. The highly hygroscopic sheet material according to claim 8, wherein a moisture permeable resin layer is formed on the outermost surface of the skin material, and an uneven portion is formed on the back surface of the moisture permeable resin layer. 【請求項１３】孔径１０μｍ以下の細孔が形成された表
層の上面に溌水コーティング層を形成し、該溌水コーテ
ィング層を遅延手段と成した請求項１１記載の高吸湿性
シート材。13. The highly hygroscopic sheet material according to claim 11, wherein a water repellent coating layer is formed on the upper surface of the surface layer having pores having a pore diameter of 10 μm or less, and the water repellent coating layer serves as a delay means. 【請求項１４】上記細孔の開口率を１．０％〜５０．０
％の範囲内に設定した請求項１１記載の高吸湿性シート
材。14. The aperture ratio of the pores is 1.0% to 50.0.
The highly hygroscopic sheet material according to claim 11, which is set in the range of%. 【請求項１５】通気性または吸湿性を有する基布に吸湿
粉末または短繊維と粉末バインダとを分散したものを噴
霧し、通気性または吸湿性を有する別基布が被覆された
ものに対して熱と圧力とを付勢して固定された下層と、
表皮層とを備えた請求項１記載の高吸湿性シート材。15. A base cloth having breathability or hygroscopicity, sprayed with a hygroscopic powder or short fibers and a powder binder dispersed therein, and coated with another breathable or hygroscopic base cloth. A lower layer fixed by energizing heat and pressure,
The highly hygroscopic sheet material according to claim 1, further comprising a skin layer. 【請求項１６】上記下層を積層構造と成した請求項１５
記載の高吸湿性シート材。16. The lower layer has a laminated structure.
The highly hygroscopic sheet material described.
JP05284594A 1994-02-24 1994-02-24 High hygroscopic sheet material Expired - Fee Related JP3443924B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP05284594A JP3443924B2 (en) 1994-02-24 1994-02-24 High hygroscopic sheet material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP05284594A JP3443924B2 (en) 1994-02-24 1994-02-24 High hygroscopic sheet material

Publications (2)

Publication Number Publication Date
JPH07231822A true JPH07231822A (en) 1995-09-05
JP3443924B2 JP3443924B2 (en) 2003-09-08

Family

ID=12926187

Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019216582A1 (en) * 2018-05-09 2019-11-14 Cho Sung Ah Cooling fabric

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019216582A1 (en) * 2018-05-09 2019-11-14 Cho Sung Ah Cooling fabric

Also Published As

Publication number Publication date
JP3443924B2 (en) 2003-09-08

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