JP2969568B2 - Breathable waterproof cloth - Google Patents
Breathable waterproof clothInfo
- Publication number
- JP2969568B2 JP2969568B2 JP33015290A JP33015290A JP2969568B2 JP 2969568 B2 JP2969568 B2 JP 2969568B2 JP 33015290 A JP33015290 A JP 33015290A JP 33015290 A JP33015290 A JP 33015290A JP 2969568 B2 JP2969568 B2 JP 2969568B2
- Authority
- JP
- Japan
- Prior art keywords
- moisture
- water
- waterproof cloth
- permeable
- sericin
- 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.)
- Expired - Fee Related
Links
Landscapes
- Laminated Bodies (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
Description
（産業上の利用分野） 本発明は防寒衣料に適した吸水性と、透湿性を有する
透湿防水布に関するものである。 （従来の技術） 従来から透湿性防水布は微多孔のフッ素樹脂やポリウ
レタン系の樹脂皮膜をポリアミド繊維などの編織物の片
面に形成し、撥水処理を併用することにより製造されて
いた。 しかしながらこれらの透湿性防水布は樹脂皮膜中に微
多孔が存在する場合でも着用時に身体から発汗する水蒸
気が樹脂皮膜表面に水滴となって結露し不快感を与えて
いた。 （発明が解決しようとする課題） 従来知られた透湿性防水布は微多孔皮膜が疎水性であ
るために結露した汗の水滴を吸収する能力が低い。一
方、親水性の無孔膜も開発されている。しかし従来知ら
れているものは汗の水滴を多少吸収する能力はあるが、
尚不十分であった。尚、体積の300〜1000倍の水分を吸
収する親水性高分子物質を添加することによりかなりの
汗の水滴を吸収させることができるが該高分子物質は一
旦水分を吸収すると、容易に水分を離さず樹脂皮膜面が
べとつき感のある状態になり、衣服としての用途には不
適切である。 このような欠点を改良するために水に溶解せず、水分
を吸収しても異状に膨潤しないレーヨンや絹などの天然
繊維の粉末を透湿性の樹脂皮膜に含有させることによ
り、適度の水分を吸収しなおかつ該皮膜表面がべとつき
感のある状態を呈することもなく、吸収した水分を容易
に放散させる機能を示すことが確認されているが、使用
する天然繊維の粉末は裁断、粉砕をしても繊維径に対し
てその長さが10〜３倍と長く、樹脂中に混入しても塗布
し難く、塗布面に種々の欠点が多発し、さらには耐水圧
が上がらないなどの不都合も生じ、商品価値の低いもの
であった。 （課題を解決するための手段） 本発明の目的は上記の問題点を解決することにあり、
その構成は、布帛の表面上に長軸と短軸の径比が1:1〜
1:3の比を持ち、長軸の長さが１〜30μからなるセリシ
ン粉末を含有する透湿性ポリウレタンを主体とする樹脂
皮膜を配したことを特徴とする透湿性防水布にある。 本発明で用いるセリシンは長軸と短軸の径比即ちアス
ペクト比が1:1〜1:3で長軸の長さが１〜30μである限
り、その製造法はいずれでもよい。たとえば絹繊維の精
練廃液をセリシンの等電点であるpH4.0〜5.0に調整した
後、必要に応じて濾過助剤の存在下、無機凝集剤および
／または有機高分子凝集剤を添加して生成して得られた
沈澱物を濾別し乾燥することによってセリシンの粉末を
得、これを適宜の手段で粉砕処理することにより所望の
セリシン粉末を得ることができる。上記した特定範囲の
大きさの通常円形ないし楕円形のセリシン粉末を用いる
ことにより、塗布操作が容易なだけでなく、塗布面への
欠点も現われず、十分な耐水圧をもつ品質良好な透湿性
防水布を得ることができる。 セリシンの使用量としては、ポリウレタン100部に対
して１〜10部が適量である。本発明で用いるポリウレタ
ンを主体とする樹脂とは、ポリウレタンを50〜100％含
む樹脂をいい、必要に応じてポリアミン酸やシリコーン
またはフッ素系モノマー又はポリマーなどを共重合ある
いは混合したものを指す。 さらに顔料、体質顔料、撥水剤、架橋剤または界面活
性剤等の添加剤も必要に応じ添加することができる。 樹脂膜の形成方法としては布帛に樹脂溶液を塗布・乾
燥する方法でも、また布帛に、ジメチルホルムアミド等
の溶剤に溶かした樹脂溶液を塗布してから水に浸漬し
て、樹脂溶液中の溶剤を水で置換して微多孔質を形成さ
せる湿式成膜法でもよい。 また、あらかじめ離型紙の上に樹脂溶液を塗布して樹
脂膜を作り、その上に接着剤を塗布して布帛とラミネー
トする方法でもよい。 本発明で用いる布帛としてはポリアミドやポリエステ
ルなどの合成繊維編織物や綿や綿とポリエステルなどの
合成繊維との混紡織物等があげられる。 また、本発明では布帛に対し撥水加工等の処理を行う
ことが好ましいが、用いる撥水剤としては通常ポリシロ
キサン系撥水剤やフッ素系撥水剤等の公知のものを用い
ることができる。 本発明の防水布における透湿性のポリウレタン樹脂膜
は前記したようにその製造条件により微多孔膜、無孔膜
のいずれもつくりうるが、微多孔膜にあってはその大部
分の孔が0.2〜２μである。 また無孔膜の場合は該皮膜の厚みが10μの時の透湿度
が120〜330g/m2/HRになる。 かくして容易に高品質の透湿性防水布が得られる。 次に本発明を実施例により説明する。(Industrial application field) The present invention relates to a moisture-permeable waterproof cloth having water absorbency and moisture permeability suitable for winter clothing. (Prior Art) Conventionally, a moisture-permeable waterproof cloth has been manufactured by forming a microporous fluororesin or polyurethane resin film on one surface of a knitted fabric such as polyamide fiber and using a water-repellent treatment together. However, even when the moisture-permeable waterproof cloth has microporosity in the resin film, water vapor sweating from the body when worn causes water droplets to condense on the surface of the resin film to give discomfort. (Problems to be Solved by the Invention) A conventionally known moisture-permeable waterproof cloth has a low ability to absorb water droplets of condensed sweat because the microporous film is hydrophobic. On the other hand, hydrophilic nonporous membranes have also been developed. However, what is known in the past has the ability to absorb some water droplets of sweat,
It was still insufficient. By adding a hydrophilic polymer substance that absorbs 300 to 1000 times the volume of water, a considerable amount of water droplets of sweat can be absorbed.However, once the polymer substance absorbs water, it easily absorbs water. Without release, the resin film surface becomes sticky and unsuitable for use as clothing. In order to improve such disadvantages, natural fiber powder such as rayon or silk that does not dissolve in water and does not swell abnormally even if it absorbs water is contained in the moisture-permeable resin film, so that an appropriate amount of water can be absorbed. It has been confirmed that the film surface has a function of easily dissipating the absorbed water without absorbing and still exhibiting a sticky feeling on the film surface, but the natural fiber powder used is cut and crushed. Also, its length is 10 to 3 times longer than the fiber diameter, and it is difficult to apply even if mixed into resin, there are many drawbacks on the coated surface, and there is also a problem that the water pressure does not increase , And had a low commercial value. (Means for Solving the Problems) An object of the present invention is to solve the above problems.
The configuration is such that the diameter ratio of the long axis and the short axis on the surface of the fabric is 1: 1 to
A moisture-permeable waterproof cloth characterized in that a resin film mainly composed of moisture-permeable polyurethane containing sericin powder having a ratio of 1: 3 and a major axis of 1 to 30 μm is provided. Sericin used in the present invention may be produced by any method as long as the ratio of the major axis to the minor axis, that is, the aspect ratio, is 1: 1 to 1: 3 and the length of the major axis is 1 to 30 μm. For example, after adjusting the pH of the refining waste liquid of silk fiber to pH 4.0 to 5.0, which is the isoelectric point of sericin, adding an inorganic coagulant and / or an organic polymer coagulant in the presence of a filter aid as needed. The resulting precipitate is separated by filtration and dried to obtain a sericin powder, which is pulverized by an appropriate means to obtain a desired sericin powder. The use of sericin powder in the above-mentioned specific range, which is usually circular or elliptical, not only facilitates the coating operation but also does not cause any defects on the coating surface and has good water pressure and good moisture permeability. You can get a waterproof cloth. An appropriate amount of sericin is 1 to 10 parts per 100 parts of polyurethane. The resin mainly composed of polyurethane used in the present invention refers to a resin containing 50 to 100% of polyurethane, and is a resin obtained by copolymerizing or mixing polyamine acid, silicone, or a fluorine-based monomer or polymer as required. Further, additives such as a pigment, an extender, a water repellent, a cross-linking agent or a surfactant can be added as necessary. As a method of forming a resin film, a method of applying and drying a resin solution on a cloth, or a method of applying a resin solution dissolved in a solvent such as dimethylformamide to a cloth and then immersing the resin in water to remove the solvent in the resin solution A wet film forming method of forming microporous material by substituting with water may be used. Alternatively, a method may be used in which a resin solution is applied on release paper in advance to form a resin film, and an adhesive is applied thereon and laminated with a fabric. Examples of the fabric used in the present invention include a synthetic fiber knitted fabric such as polyamide and polyester, and a blended fabric of cotton or cotton and a synthetic fiber such as polyester. Further, in the present invention, it is preferable to perform a treatment such as water repellent treatment on the cloth, but as the water repellent to be used, a known material such as a polysiloxane-based water repellent or a fluorine-based water repellent can be used. . As described above, the moisture-permeable polyurethane resin membrane in the waterproof cloth of the present invention can be made into a microporous membrane or a nonporous membrane depending on the production conditions, but in the microporous membrane, most of the pores are 0.2 to 0.2. 2μ. In the case of a non-porous film, the moisture permeability when the film thickness is 10 μm is 120 to 330 g / m 2 / HR. Thus, a high-quality moisture-permeable waterproof cloth can be easily obtained. Next, the present invention will be described with reference to examples.
ナイロンクロデニールの210本タフタの通常の染色品
アサヒカード730（旭硝子（株）製）５％水溶液に浸漬
しマングルで絞って（絞り率30％）から乾燥し、次いで
150℃１分間の熱処理を行った。セリシン粉末を次のよ
うにして作った。 （セリシンの製造法） 実施例No.1 絹糸1kgに対して、炭酸ナトリウム50g、マルセル石鹸
80gを溶かした熱水20（pH＝11.2）に入れ、３時間煮
沸して精錬し、ついで20の水で２回水洗した。 精練排水を合わせ冷却、濾過し、これを6N塩酸でpH4.
5に調整後、ポリ塩化アルミニウム800ppm、カチオン系
高分子凝集剤100ppm添加し、セリシン凝集物を得る。こ
の後にフィルタープレスによって沈澱だけを回収し（含
水率約80％）乾燥することによってセリシンの粉末を得
た。ここで得られたセリシンの粉末を粉砕処理し平均長
軸25μ、平均短軸10μの粉末とした。 実施例No.2 絹糸1kgを、蛋白質分解酵素アルカリ性プロテアーゼ
の20ppm濃度の弱アルカリ水溶液（pH9.5）20で精錬
し、廃水から実施例No.1に殉じてセリシンを回収した。
このときのセリシンの収量は約50gであった。この後に
実施例No.1と同様にして平均長軸25μ、平均短軸10μの
セリシン粉末を調整した。 実施例No.3 絹糸1kgを、炭酸ナトリウム50gを溶かした熱水20
（pH11.5）に入れ、３時間30分煮沸して精錬し、ついで
20の水で２回水洗した。 精錬排水に合わせ冷却、濾過し、これを6N塩酸でpH4.
1に調整し、セリシン凝集物を得る。この後にフィルタ
ープレスによって沈澱だけを回収し（含水率約85％）乾
燥することによってセリシンの粉末を得た。この後に実
施例No.1と同様にして平均長軸25μ、平均短軸10μのセ
リシン粉末を調整した。 次に前記の撥水処理したナイロンタフタに次の樹脂処
法の樹脂液を80g/m2塗布し、15℃の水に２分間浸漬し、
次いで60℃の湯に10分間浸漬してジメチルホルムアミド
を完全に除した。 クリスボン8006HV（大日本（株）製） 100部 炭酸カルシウム ５ セリシン ５ ダイラックＬ−1500（酸化チタン） ５ 次に、アサヒガード650（旭硝子（株）製）１％のタ
ーペン溶液に浸漬しマングルで絞ってから乾燥し、150
℃、１分の熱処理を行った。このものを40℃の湯を500m
l入れたビーカーに樹脂面を下にして覆せて、周りをゴ
ムチューブで止めて、温度10℃、湿度60％の恒温恒湿機
の中に１時間置いた後に、取り出して布帛の樹脂面を濾
紙でふき、水分の重量増加を測定したところ12％増加し
ていた。さらに、この布帛を、先程の恒温恒湿機の中に
１時間置いた後に、取り出し、水分の重量変化を測った
ところ５％に低下していた。なお、この布帛の耐水圧は
200cm、透湿度は210g/m2/Hであった。またこの布帛表面
にはべとつき感は全くなかった。 比較のために前述の処法からセリシンを抜き、同じよ
うにして試験をしたところ、最初の水分増加は５％で、
１時間後の水分率の低下は３％であり、耐水圧は200c
m、透湿度は190g/m2/Hであった。耐水圧の測定はJIS L1
096、透湿度の測定はJIS L1099に拠った。またゼラチン
を用いた場合には非常に強いべとつき感が生じた。210 dyed ordinary nylon taffeta dyed nylon Asahi Card 730 (manufactured by Asahi Glass Co., Ltd.), dipped in 5% aqueous solution, squeezed with a mangle (30% squeezing rate), and then dried
Heat treatment was performed at 150 ° C. for 1 minute. Sericin powder was made as follows. (Production method of sericin) Example No. 1 1 kg of silk thread, 50 g of sodium carbonate, Marcel soap
80 g was dissolved in hot water 20 (pH 11.2) and boiled for 3 hours for refining, and then washed twice with 20 water. The scouring wastewater was combined, cooled, and filtered.
After adjustment to 5, 800 ppm of polyaluminum chloride and 100 ppm of a cationic polymer flocculant are added to obtain a sericin aggregate. Thereafter, only the precipitate was collected by a filter press (water content: about 80%) and dried to obtain a sericin powder. The sericin powder thus obtained was pulverized to obtain a powder having an average major axis of 25 μ and an average minor axis of 10 μ. Example No. 2 1 kg of silk thread was refined with a 20 ppm concentration of a weak alkaline aqueous solution (pH 9.5) 20 of a protease which is an alkaline protease, and sericin was recovered from wastewater by rushing to Example No. 1.
At this time, the yield of sericin was about 50 g. Thereafter, a sericin powder having an average major axis of 25 μ and an average minor axis of 10 μ was prepared in the same manner as in Example No. 1. Example No. 3 1 kg of silk thread was dissolved in 50 g of sodium carbonate in hot water 20
(PH 11.5) and boil for 3 hours and 30 minutes for refining.
Washed twice with 20 pieces of water. Cooled and filtered according to the smelting wastewater, filtered with 6N hydrochloric acid to pH 4.
Adjust to 1 to obtain sericin aggregates. Thereafter, only the precipitate was recovered by a filter press (water content: about 85%) and dried to obtain a sericin powder. Thereafter, a sericin powder having an average major axis of 25 μ and an average minor axis of 10 μ was prepared in the same manner as in Example No. 1. Next, 80 g / m 2 of a resin solution of the following resin treatment was applied to the water-repellent treated nylon taffeta, and immersed in water at 15 ° C. for 2 minutes.
Then, it was immersed in hot water at 60 ° C. for 10 minutes to completely remove dimethylformamide. Crisbon 8006HV (Dainippon Co., Ltd.) 100 parts Calcium carbonate 5 Sericin 5 Dirac L-1500 (Titanium oxide) 5 Next, dipped in a 1% terpen solution of Asahi Guard 650 (Asahi Glass Co., Ltd.) and squeezed with a mangle And then dry, 150
A heat treatment was performed at 1 ° C. for 1 minute. Put this thing in hot water at 40 ℃ for 500m
l Cover the beaker with the resin surface facing down, fix the surroundings with a rubber tube, place it in a thermo-hygrostat at a temperature of 10 ° C and a humidity of 60% for 1 hour, take it out and remove the resin surface of the fabric. The cloth was wiped with a filter paper, and the increase in water content was measured. Further, the cloth was placed in the thermo-hygrostat for one hour, taken out, and the change in weight of water was measured to be 5%. The water pressure resistance of this fabric is
200 cm, and the moisture permeability was 210 g / m 2 / H. Also, there was no stickiness on the surface of the fabric. For comparison, sericin was omitted from the above procedure and tested in the same way. The initial increase in water was 5%.
After 1 hour, the moisture reduction is 3% and the water pressure is 200c
m, and the moisture permeability was 190 g / m 2 / H. JIS L1 for water pressure measurement
096, the measurement of moisture permeability was based on JIS L1099. When gelatin was used, a very strong sticky feeling was produced.
Claims (3)
〜1:3で、長軸の長さが１〜30μであるセリシン粉末を
含有する透湿性ポリウレタンを主体とする樹脂皮膜を配
したことを特徴とする透湿性防水布。(1) The diameter ratio of the major axis to the minor axis is 1: 1 on the surface of the fabric.
A moisture-permeable waterproof cloth comprising a resin film mainly composed of moisture-permeable polyurethane containing sericin powder having a major axis length of 1 to 30 and a length of 1 to 30 μm.
〜２μの微多孔膜であることを特徴とする請求項１記載
の透湿性防水布。2. The moisture-permeable polyurethane resin membrane has a majority of 0.2
The moisture-permeable waterproof cloth according to claim 1, wherein the waterproof cloth is a microporous membrane having a thickness of 2 µm.
って、該皮膜の厚みが10μの時の透湿度が120〜330g/m2
/HRであることを特徴とする請求項１記載の透湿性防水
布。3. The moisture-permeable polyurethane resin film is nonporous and has a moisture permeability of 120 to 330 g / m 2 when the thickness of the film is 10 μm.
2. The moisture-permeable waterproof cloth according to claim 1, wherein the waterproof cloth is / HR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33015290A JP2969568B2 (en) | 1990-11-30 | 1990-11-30 | Breathable waterproof cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33015290A JP2969568B2 (en) | 1990-11-30 | 1990-11-30 | Breathable waterproof cloth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04202857A JPH04202857A (en) | 1992-07-23 |
| JP2969568B2 true JP2969568B2 (en) | 1999-11-02 |
Family
ID=18229397
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33015290A Expired - Fee Related JP2969568B2 (en) | 1990-11-30 | 1990-11-30 | Breathable waterproof cloth |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2969568B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100295274B1 (en) * | 1992-10-12 | 2001-10-24 | 히라이 가쯔히꼬 | High pressure resistant and moisture-permeable waterproof sheet and its manufacturing method |
| CN103061139B (en) * | 2012-12-28 | 2015-03-18 | 浙江理工大学 | Ternary complex waterproof moisture-permeable coating agent and use thereof |
| CN112375203B (en) * | 2020-12-14 | 2022-07-22 | 嘉兴学院 | Sericin modified waterborne polyurethane waterproof moisture-permeable coating and preparation method thereof |
-
1990
- 1990-11-30 JP JP33015290A patent/JP2969568B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04202857A (en) | 1992-07-23 |
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