JP4086476B2 - Moisture permeable waterproof fabric - Google Patents
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Description
【０００１】
【発明の属する技術分野】
本発明は、優れた透湿性と防水性とを有する透湿性防水布帛に関する。
【０００２】
【従来の技術】
従来より、透湿性防水布帛を得るために、繊維材料布帛に、ナイフオーバーロールコーター等の通常のコーティング機を使用して樹脂溶液を付与し、湿式凝固させて、ウレタン樹脂を主成分とする微多孔質膜を付与したり、またはさらに繊維材料布帛上やその微多孔質膜上に無孔質の樹脂膜をコーティングするかもしくは接着剤を点状にもしくは全面に付与し、接着させるラミネート法により付与することが行われている。これらの方法により得られる透湿性防水布帛は、樹脂の特性や加工方法に依存して、種々の透湿度および耐水圧を有している。例えば、耐水圧８００〜３０００ｍｍＨ２Ｏ、透湿度２５００〜４８００ｇ／ｍ２・２４ｈｒｓ（特公昭６０−４７９５４）、耐水圧１５００〜７０００ｍｍＨ２Ｏ、透湿度５０００〜８０００ｇ／ｍ２・２４ｈｒｓ（特公昭６０−４７９５５）、耐水圧１５００ｍｍＨ２Ｏ以上、透湿度７５００〜１００００ｇ／ｍ２・２４ｈｒｓ（特開平２−９９６７１）、耐水圧２５０００ｍｍＨ２Ｏ以上、透湿度３０００ｇ／ｍ２・２４ｈｒｓ以上（特公平１−３３５９２）などである。このように透湿度や耐水圧を向上させて、高透湿かつ高耐水圧の透湿性防水布帛が得られるようになり、そのため透湿性防水布帛を用いた衣服は快適性を増してきている。しかし、従来の透湿性防水布帛では、一般に、防水性能が大きければ透湿性は低下し、透湿性が大きければ防水性が低下し、風雨の厳しい場所での作業や激しい運動後では、やはり不快感が生じていた。
【０００３】
【発明が解決しようとする課題】
本発明は、上記の如き従来技術の問題点を解決し、風雨の厳しい環境下で作業を行ったり、激しい運動を行っても、ムレや漏水を発生しない優れた透湿性防水布帛を提供しようとするものである。
【０００４】
【課題を解決するための手段】
本発明は、上記課題を解決するため、繊維材料布帛とその少なくとも片面に形成された水膨潤性のポリウレタン樹脂を主成分とする無孔質樹脂膜層とからなり、結露量が３０ｇ／ｍ ２ ／ｈｒ以下であり、ＪＩＳ Ｌ １０９９（Ｂ−１）法による透湿度が１００００ｇ／ｍ ２ ・２４ｈｒｓ以上であり、耐水圧が１００００ｍｍＨ ２ Ｏ以上である透湿性防水布帛を提供する。
本発明に有用な繊維材料布帛の素材は、ポリエステル、ナイロン、アクリル、レーヨン等の化学繊維、綿、麻、羊毛等の天然繊維やこれらの混繊もしくは交織品のいずれであってもよく、特に限定されるものではない。また、それらは、織物、編物、不織布等のいかなる形態にあってもよい。
【０００５】
また、本発明に有用な水膨潤性のポリウレタン樹脂は、水膨潤性を有し、その水線膨潤度が５〜４０％であるものが好ましく用いられる。さらに、この材料は、熱圧着性を有しているとよい。熱圧着性の付与の手段としては、低融点のポリウレタン樹脂やイソシアネート系架橋剤の添加などが挙げられる。
かかる樹脂を用いて得られる防水布帛においては、ＪＩＳ Ｌ １０９９ 酢酸カリウム法で透湿度を測定すると１００００ｇ／ｍ２・２４ｈｒｓ以上の性能を示し、かつ、耐水圧は１００００ｍｍＨ２Ｏ以上である。しかるに、前述した如き従来の技術においては、透湿度は、主として、ＪＩＳ Ｚ ２０８またはＪＩＳ Ｌ １０９９ 塩化カルシウム法により測定されていたのであるが、しかし衣服の真の快適性という観点からすると、単に衣服内が多湿状態となっている着用条件からみて、乾燥した環境への水蒸気の移動を想定している塩化カルシウムを用いた方法では十分ではない。衣服を着用して運動を行っているときには、衣服内が多湿状態となっており、かつ、衣服の外表面温度は衣服内に比べ低くなっているので、衣服の内側には水滴が発生して付着する。このような状態では、いくら一定温度下（塩化カルシウム法）で著しい透湿性を示していても、外気と衣服内との温度差のある場合には、水滴が発生して付着し、よってこの付着した水滴を主として衣服外に効果的に放出する性能が必要となる。従って、酢酸カリウム法で測定した透湿度の大きさが、むしろ、衣服内の真の快適性とよく関連することとなる。このことはテントや寝袋等でも同様である。
【０００６】
さらに、結露性の評価のために、４０℃の湯を５００ｍｌ入れた５００ｍｌのビーカーを、試料の樹脂皮膜面（両面が繊維材料の場合は衣服等で使用する場合の内側）がビーカー側になるようにして、ビーカーの上側から試料で覆い、輪ゴムで固定する。このビーカーを１０℃、６０％ＲＨの条件下の恒温恒湿機中に１時間放置する。１時間後における樹脂皮膜面に付着した水滴量を測定して結露量を求め、単位をｇ／ｍ２／ｈｒに換算した。この方法で測定される本発明の透湿性防水布帛の結露量は、３０ｇ／ｍ２／ｈｒ以下である。
【０００７】
即ち、本発明の透湿性防水布帛では、酢酸カリウム法で測定した透湿度が１００００ｇ／ｍ２・２４ｈｒｓ以上であり、塩化カルシウム法で測定した透湿度が３０００ｇ／ｍ２・２４ｈｒｓ以上であり、さらに外部からの水の浸透を防止する性能を示す耐水圧は１００００ｍｍＨ２Ｏ以上である。また、その結露量は３０ｇ／ｍ２／ｈｒ以下である。
【０００８】
本発明の透湿性防水布帛は、例えば、次の如き方法により製造することができる。
（１） 繊維材料布帛に水膨潤性のポリウレタン樹脂を主成分とする混合樹脂溶液を塗布し、乾燥することによるコーティング法を用いる方法。
（２） 離型紙上に水膨潤性のポリウレタン樹脂を主成分とする混合樹脂溶液を塗布し、乾燥し、次いで接着剤を付与した後に、繊維材料布帛に熱圧着することによるラミネート法を用いる方法。
（３） 離型紙上に水膨潤性を有し、かつ熱圧着性のポリウレタン樹脂を主成分とする混合樹脂溶液を塗布し、乾燥した後、繊維材料布帛に熱圧着することによるラミネート法を用いる方法。
【０００９】
ラミネート法においては、まず離型紙上に有機溶剤で希釈された水膨潤性のポリウレタン樹脂を主成分とする混合樹脂液を全面に塗布する。この際用いることのできる有機溶剤としては、メチルエチルケトン、ジメチルホルムアミド、トルエン、酢酸エチル、イソプロピルアルコールなどが挙げられる。この混合樹脂溶液中には、イソシアネート系架橋剤や界面活性剤、酢酸エチルジオクチルフタレート等の可塑剤、炭酸カルシウム、コロイダルシリカ、セルロース、プロテイン等の無機もしくは有機物質の微粉末などを添加してもよい。また、このときの樹脂膜の厚さは、３〜２０μｍ程度であるのがよい。膜厚が３μｍ以下であると、離型紙を使用するため均一な膜面および厚みが得られにくい。２０μｍ以上では、透湿度が著しく低下する。混合樹脂溶液の塗布は、ナイフオーバーロールコーターなどの公知の手段により行うことがでる。
【００１０】
離型紙に塗布された混合樹脂液を、エアーオーブンなどにより、１００〜１６０℃程度の温度で乾燥して無孔質膜を形成する。次に、無孔質膜が熱圧着性を有している場合には、この無孔質膜を２０〜１４０℃の温度で予備加熱し、これを２０〜１４０℃の温度で予備加熱された繊維材料布帛の一面に、繊維材料または無孔質膜の耐熱性等により適宜選択される１００〜１６０℃の温度および１ｋｇ／ｃｍ２以上の圧力において、熱圧着する。無孔質膜が熱圧着性を有していない場合には、得られた無孔質膜上に透湿性を有する接着剤を点状もしくは線状にまたは全面に付与し、１００〜１６０℃の温度で乾燥し、または半乾燥し、次いでこれを、上記と同様に、予備加熱された繊維材料布帛の一面に、１００〜１６０℃の温度および１ｋｇ／ｃｍ２以上の圧力において、熱圧着する。次に、熱圧着された材料を、０〜２０時間エージングした後、離型紙を剥ぎ取る。熱圧着前の予備加熱は、必要に応じて行えばよく、常に必要となるものではない。
【００１１】
次いで、所望により、フッ素系撥水剤、シリコン系撥水剤などを用いて常法により撥水処理を行い、１００〜１５０℃でしわ取りおよび規格調整のため仕上げセットを行い、透湿性防水布帛を得る。また、必要に応じ、撥水処理後にペーパー処理等を行ってもよい。 また、コーティング法による無孔質膜の付与においては、ラミネート法で用いるのと同様の混合樹脂溶液をナイフオーバーロールコーター等のコーティング機により直接、繊維材料布帛上に塗布し、塗布された混合樹脂液をエアーオーブンなどにより１００〜１６０℃の温度で乾燥して、無孔質膜を得る。布帛の前処理および後処理もラミネート法の場合と同様に行えばよい。
【００１２】
このようなコーティング法により得られる無孔質膜は、その膜面が繊維材料の凹凸の影響を受けやすく、膜厚も不均一になりやすいために、ラミネート法により得られた膜に比べて、耐久性にやや劣る場合が多い。また、タックも発生しやすい。ラミネート法による場合には、離型紙上で製膜するために膜面が平滑であり、かつ膜厚も均一である無孔質膜が得られるので、耐久性があり、品質の安定した布帛を安定的に製造できるようになる。さらに、透湿性のある接着剤を点状または線状に付与し、接着を行う方法では、全面接着する場合に比べて優れた透湿性を有する布帛を得ることができ、また接着剤を用いずに熱圧着により得られる透湿性防水布帛は、防水性、透湿性および耐久性ともに著しく優れた性能を示し、耐久性に関しては１０回洗濯後においても９０％以上の耐水圧保持率を有する。
【００１３】
【発明の効果】
よって、本発明に係る透湿性防水布帛は、優れた水蒸気透過性能を有するので、衣服として用いる場合に、身体から発生する水蒸気を衣服外に素早く放出し、かつ衣服内と外気温との差より発生する水滴をも衣服外に放出し、さらに高い防水性能を持っているため漏水を防ぎ、厳しい環境下での作業や、運動時であっても衣服内がムレたりベトついたりしなくなり、快適な作業環境下での作業や運動を可能にするものである。
【００１４】
本明細書に述べる品質評価は、次の方法に依った。
１）透湿性
ＪＩＳ Ｌ １０９９ Ａ−１法（塩化カルシウム法）およびＢ−１法（酢酸カリウム法）により測定した。ただし、表示を２４時間に換算して行った。
２）耐水圧
ＪＩＳ Ｌ １０９２ Ｂ法により測定した。また、洗濯後の耐水圧の保持率を測定する場合の洗濯方法はＪＩＳ Ｌ ０２１７ １０３法を使用し、洗濯前と１０回洗濯後の耐水圧を比較した。
３）結露性
前述の方法で結露量を求め、ｇ／ｍ２／ｈｒの単位で表示した。
【００１５】
【実施例】
以下に実施例を挙げて本発明をさらに説明する。なお、例中「部」は重量部を表す。
実施例１
ポリエステル織物（糸使い：７５デニール／７２フィラメント、密度：縦１８０本／吋、横９４本／吋の平織物）を常法により精練、染色し、アサヒガードＡＧ７１０（フッ素系撥水剤、旭硝子（株）製）の５％溶液を織物に含浸させ、マングルで絞り、乾燥した後、１５０℃で３０秒間熱処理した。
【００１６】
無孔質膜用に下記混合樹脂溶液、
無孔質膜用混合樹脂溶液
熱圧着性ポリウレタン樹脂（固形分３０％） ２０部
水膨潤性ポリウレタン樹脂 ８０部
（水線膨潤度１７％、固形分３０％）
メチルエチルケトン ７０部
ジメチルホルムアミド １０部
を用意し、ナイフオーバーロールコーターを使用し、フルダル離型紙ＥＶ１３０ＴＰＤ（リンテック（株）製）上に全面塗布した。離型紙上の樹脂をエアーオーブンを用いて１００℃で乾燥し、樹脂膜厚１０μｍの無孔質膜を得た。
【００１７】
次に、透湿性を有する下記組成の接着剤、
二液型ポリウレタン樹脂（固形分６０％） １００部
イソシアネート架橋剤 １０部
メチルエチルケトン １０部
トルエン ７０部
を、グラビアロールコーターを用いて無孔質膜上に点状に付与した後、１００℃で乾燥し、これを１００℃で予備加熱された前記ポリエステル平織物と１２０℃、４ｋｇ／ｃｍ２で熱圧着した。２０時間エージングした後、離型紙を剥離し、次いでアサヒガードＡＧ６９０（フッ素系撥水剤、旭硝子（株）製）を用いて撥水処理を行い、１４０℃で仕上げセットを行い、ペーパー処理し、透湿性防水布帛を得た。得られた透湿性防水布帛の各種物性を表１に記す。
【００１８】
比較例１
水膨潤性のポリウレタン樹脂を用いないようにするために、無孔質膜用混合樹脂溶液の組成を下記の通りにした以外は実施例１と同様に処理した。
無孔質膜用混合樹脂溶液
エーテル系ポリウレタン樹脂 １００部
（水膨潤度１％、固形分３０％）
メチルエチルケトン ７０部
トルエン １０部
得られた透湿性防水布帛の各種物性を表１に記す。
【００１９】
【表１】
BACKGROUND OF THE INVENTION
The present invention relates to a moisture-permeable waterproof fabric having excellent moisture permeability and waterproofness.
[0002]
[Prior art]
Conventionally, in order to obtain a moisture-permeable waterproof fabric, a resin solution is applied to a fiber material fabric using a normal coating machine such as a knife over roll coater, and is wet-coagulated to obtain a fine resin mainly composed of a urethane resin. By applying a porous film, or by coating a non-porous resin film on the fiber material fabric or on the microporous film, or by applying an adhesive in the form of dots or over the entire surface, and by laminating to adhere Giving is done. The moisture-permeable waterproof fabric obtained by these methods has various moisture permeability and water pressure resistance depending on the characteristics of the resin and the processing method. For example, the water pressure resistance is 800 to 3000 mmH 2 O, the water vapor transmission rate is 2500 to 4800 g / m 2 · 24 hrs (JP-B 60-47954), the water pressure resistance is 1500 to 7000 mmH 2 O, and the water vapor transmission rate is 5000 to 8000 g / m 2 · 24 hrs (JPB 60). -47955), water pressure resistance 1500 mmH 2 O or more, water vapor transmission rate 7500-10000 g / m 2 · 24 hrs (Japanese Patent Laid-Open No. 2-99671), water pressure resistance 25000 mmH 2 O or more, water vapor transmission rate 3000 g / m 2 · 24 hrs or more 33592). Thus, moisture permeability and water pressure resistance are improved, and a moisture-permeable waterproof fabric with high moisture permeability and high water pressure can be obtained. For this reason, clothes using moisture-permeable waterproof fabric have increased comfort. However, conventional moisture-permeable waterproof fabrics generally have poor moisture permeability if the waterproof performance is large, and if the moisture permeability is large, the waterproof performance decreases, and it is still uncomfortable after work in severe weather or after intense exercise. Has occurred.
[0003]
[Problems to be solved by the invention]
The present invention solves the problems of the prior art as described above, and provides an excellent moisture-permeable waterproof fabric that does not cause stuffiness or water leakage even when working in severe wind and rain environments or exercising vigorously. To do.
[0004]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention comprises a fiber material fabric and a nonporous resin film layer mainly composed of a water-swellable polyurethane resin formed on at least one surface thereof, and the amount of condensation is 30 g / m 2. A moisture permeable waterproof fabric having a water permeability of 10000 g / m 2 · 24 hrs or more and a water pressure resistance of 10000 mmH 2 O or more is provided.
The material of the fiber material fabric useful for the present invention may be any of chemical fibers such as polyester, nylon, acrylic and rayon, natural fibers such as cotton, hemp and wool, and mixed or woven fabrics thereof. It is not limited. Moreover, they may be in any form such as a woven fabric, a knitted fabric, and a non-woven fabric.
[0005]
The water-swellable polyurethane resin useful in the present invention preferably has water-swellability and a water-line swelling degree of 5 to 40%. Furthermore, this material may have thermocompression bonding. Examples of means for imparting thermocompression bonding include addition of a low melting point polyurethane resin or an isocyanate-based crosslinking agent.
A waterproof fabric obtained using such a resin exhibits a performance of 10,000 g / m 2 · 24 hrs or more when measured for moisture permeability by the JIS L 1099 potassium acetate method, and has a water pressure resistance of 10,000 mmH 2 O or more. However, in the conventional technology as described above, the moisture permeability is mainly measured by the JIS Z 208 or JIS L 1099 calcium chloride method, but simply from the viewpoint of the true comfort of the garment, In view of wearing conditions in which the inside is in a humid state, a method using calcium chloride that assumes the movement of water vapor to a dry environment is not sufficient. When exercising while wearing clothes, the inside of the clothes is humid and the outer surface temperature of the clothes is lower than that in the clothes, so water droplets are generated inside the clothes. Adhere to. In such a state, no matter how much moisture permeability is exhibited at a constant temperature (calcium chloride method), if there is a temperature difference between the outside air and the inside of the clothes, water droplets are generated and adhered, and thus this adhesion It is necessary to have a capability of effectively discharging the water droplets mainly out of the clothes. Therefore, the magnitude of moisture permeability measured by the potassium acetate method is rather closely related to the true comfort in clothing. The same applies to tents and sleeping bags.
[0006]
Furthermore, for the evaluation of the dew condensation property, a 500 ml beaker containing 500 ml of 40 ° C. hot water is placed on the beaker side of the resin film surface of the sample (in the case where both surfaces are made of fiber material when used for clothes). In this way, the sample is covered with the sample from the upper side of the beaker and fixed with a rubber band. This beaker is left in a thermo-hygrostat under conditions of 10 ° C. and 60% RH for 1 hour. The amount of water droplets adhered to the resin film surface after 1 hour was measured to determine the amount of condensation, and the unit was converted to g / m 2 / hr. The condensation amount of the moisture-permeable waterproof fabric of the present invention measured by this method is 30 g / m 2 / hr or less.
[0007]
That is, in the moisture-permeable waterproof fabric of the present invention, the moisture permeability measured by the potassium acetate method is at 10000g / m 2 · 24hrs or more, moisture permeability was measured by the calcium chloride method is 3000g / m 2 · 24hrs more, further The water pressure resistance showing the performance of preventing the penetration of water from the outside is 10000 mmH 2 O or more. In addition, the amount of condensation is 30 g / m 2 / hr or less.
[0008]
The moisture-permeable waterproof fabric of the present invention can be produced, for example, by the following method.
(1) mixing a resin solution to the fiber material fabric 帛 mainly of water-swellable polyurethane resin was applied, a method of using a coating method by drying.
(2) a mixed resin solution mainly composed of water-swellable polyurethane resin on a release paper and drying the coating, and then after applying the adhesive, using a lamination method by thermocompression bonding to the fiber material fabric 帛 Method.
(3) has a water-swellable onto release paper, and the thermocompression bonding of the polyurethane resin is coated a mixed resin solution containing as a main component, after drying, laminating method by thermocompression bonding to the fiber material fabric 帛 The method to use.
[0009]
In the laminating method, first, a mixed resin liquid mainly composed of a water-swellable polyurethane resin diluted with an organic solvent is applied on the entire surface of a release paper. Examples of the organic solvent that can be used at this time include methyl ethyl ketone, dimethylformamide, toluene, ethyl acetate, and isopropyl alcohol. In this mixed resin solution, an isocyanate-based crosslinking agent, a surfactant, a plasticizer such as ethyl acetate dioctyl phthalate, a fine powder of an inorganic or organic substance such as calcium carbonate, colloidal silica, cellulose, or protein may be added. Good. The thickness of the resin film at this time is preferably about 3 to 20 μm. When the film thickness is 3 μm or less, since a release paper is used, it is difficult to obtain a uniform film surface and thickness. If it is 20 μm or more, the moisture permeability is remarkably lowered. Application of the mixed resin solution can be performed by a known means such as a knife over roll coater.
[0010]
The mixed resin liquid applied to the release paper is dried at a temperature of about 100 to 160 ° C. by an air oven or the like to form a nonporous film. Next, when the nonporous film has thermocompression bonding, the nonporous film was preheated at a temperature of 20 to 140 ° C., and preheated at a temperature of 20 to 140 ° C. Thermocompression bonding is performed on one surface of the fiber material fabric at a temperature of 100 to 160 ° C. and a pressure of 1 kg / cm 2 or more, which is appropriately selected depending on the heat resistance of the fiber material or the nonporous membrane . When the nonporous film does not have thermocompression bonding property, an adhesive having moisture permeability is applied to the obtained nonporous film in a dotted or linear shape or on the entire surface, and the temperature is 100 to 160 ° C. Dry at temperature or semi-dry, and then thermocompression bond to one side of a preheated fiber material fabric at a temperature of 100-160 ° C. and a pressure of 1 kg / cm 2 or more as above. . Next, after aging the thermocompressed material for 0 to 20 hours, the release paper is peeled off. The preheating prior to thermocompression bonding may be performed as necessary and is not always necessary.
[0011]
Then, if desired, a water-repellent treatment is performed by a conventional method using a fluorine-based water repellent, a silicon-based water repellent, etc., and a finishing set is performed for wrinkle removal and standard adjustment at 100 to 150 ° C. Get. Moreover, you may perform a paper process etc. after a water repellent process as needed. In the application of non-porous film by coating method, a mixed resin solution the same as used in the laminating method directly by coating machine such as a knife-over-roll coater, it was coated on the fiber material fabric, coated mixed resin The liquid is dried by an air oven or the like at a temperature of 100 to 160 ° C. to obtain a nonporous film. What is necessary is just to perform the pre-processing and post-processing of a fabric similarly to the case of the lamination method.
[0012]
Nonporous membrane obtained by such a coating method, the film surface susceptible to concave convex of the fiber material, in order to film thickness also tends to be uneven, as compared with the film obtained by lamination In many cases, the durability is slightly inferior. Tack is also likely to occur. In the case of the laminating method, a non-porous film having a smooth film surface and a uniform film thickness is obtained for forming a film on a release paper, so that a durable and stable quality fabric can be obtained. It becomes possible to manufacture stably. Furthermore, in a method in which a moisture-permeable adhesive is applied in the form of dots or lines and is adhered, a fabric having superior moisture permeability can be obtained as compared with the case where the entire surface is adhered, and an adhesive is not used. In addition, the moisture-permeable waterproof fabric obtained by thermocompression shows remarkably excellent performance in terms of waterproofness, moisture permeability and durability, and has a water pressure retention rate of 90% or more even after washing 10 times.
[0013]
【The invention's effect】
Therefore, the moisture-permeable waterproof fabric according to the present invention has excellent water vapor transmission performance, so that when used as clothes, it quickly releases water vapor generated from the body to the outside of the clothes and the difference between the temperature inside and outside the clothes. Water droplets that are generated are also released to the outside of the garment, and since it has a high waterproof performance, it prevents water leakage and prevents the inside of the garment from becoming stuffy or sticky even when working in harsh environments or during exercise. It enables work and exercise in a rough working environment.
[0014]
The quality evaluation described in this specification was based on the following method.
1) Moisture permeability Measured by JIS L 1099 A-1 method (calcium chloride method) and B-1 method (potassium acetate method). However, the display was converted into 24 hours.
2) Water pressure resistance Measured according to JIS L 1092 B method. Moreover, the washing method in the case of measuring the retention rate of the water pressure resistance after washing used JIS L 0217 103 method, and compared the water pressure resistance before washing and after 10 times washing.
3) Condensation Dew amount was calculated | required by the above-mentioned method, and was displayed in the unit of g / m < 2 > / hr.
[0015]
【Example】
The following examples further illustrate the present invention. In the examples, “parts” represents parts by weight.
Example 1
Polyester woven fabric (thread use: 75 denier / 72 filament, density: 180 pcs / 吋, horizontal 94 横 / flat woven fabric) is scoured and dyed in the usual manner, and Asahi Guard AG710 (fluorinated water repellent, Asahi Glass ( The fabric was impregnated with a 5% solution, manufactured by Sangyo Co., Ltd., wrung with mangle, dried, and then heat treated at 150 ° C. for 30 seconds.
[0016]
The following mixed resin solution for non-porous membrane,
Non-porous membrane mixed resin solution thermocompression bonding polyurethane resin (solid content 30%) 20 parts Water-swellable polyurethane resin 80 parts (water-line swelling degree 17%, solid content 30%)
70 parts of methyl ethyl ketone 10 parts of dimethylformamide were prepared and coated on the entire surface of full dull release paper EV130TPD (manufactured by Lintec Corporation) using a knife over roll coater. The resin on the release paper was dried at 100 ° C. using an air oven to obtain a nonporous film having a resin film thickness of 10 μm.
[0017]
Next, an adhesive having the following composition having moisture permeability,
Two-part polyurethane resin (solid content 60%) 100 parts Isocyanate cross-linking agent 10 parts Methyl ethyl ketone 10 parts Toluene 70 parts were applied on a nonporous membrane using a gravure roll coater, and then dried at 100 ° C. This was thermocompression bonded to the polyester plain fabric preheated at 100 ° C. at 120 ° C. and 4 kg / cm 2 . After aging for 20 hours, the release paper was peeled off, then water-repellent treatment was performed using Asahi Guard AG690 (fluorinated water repellent, manufactured by Asahi Glass Co., Ltd.), finishing set at 140 ° C., paper treatment, A moisture-permeable waterproof fabric was obtained. Various physical properties of the obtained moisture-permeable waterproof fabric are shown in Table 1.
[0018]
Comparative Example 1
In order not to use the water-swellable polyurethane resin , the same treatment as in Example 1 was performed except that the composition of the mixed resin solution for nonporous membrane was changed as follows.
100 parts of mixed resin solution ether type polyurethane resin for non-porous membrane (water swelling degree 1%, solid content 30%)
Methyl ethyl ketone 70 parts Toluene 10 parts Various physical properties of the obtained moisture-permeable waterproof fabric are shown in Table 1.
[0019]
[Table 1]
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001074937A JP4086476B2 (en) | 2001-03-15 | 2001-03-15 | Moisture permeable waterproof fabric |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001074937A JP4086476B2 (en) | 2001-03-15 | 2001-03-15 | Moisture permeable waterproof fabric |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15932693A Division JP3212418B2 (en) | 1993-04-28 | 1993-06-29 | Breathable waterproof fabric |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001239624A JP2001239624A (en) | 2001-09-04 |
| JP4086476B2 true JP4086476B2 (en) | 2008-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001074937A Expired - Lifetime JP4086476B2 (en) | 2001-03-15 | 2001-03-15 | Moisture permeable waterproof fabric |
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| JP (1) | JP4086476B2 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006168304A (en) * | 2004-12-20 | 2006-06-29 | Teijin Nestex Ltd | Moisture-permeable waterproof cloth and protective garment for cardiac pacemaker |
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2001
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| JP2001239624A (en) | 2001-09-04 |
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