JP3718422B2 - Waterproof fabric and method for producing the same - Google Patents
Waterproof fabric and method for producing the same Download PDFInfo
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Description
【０００１】
【発明の属する技術分野】
本発明はスポーツ用衣類および雨衣等に好適に使用される快適性を持つ防水加工布帛に関する。
【０００２】
【従来の技術】
防水加工布帛として、例えば特開昭６０−４７９５４号公報には、主としてポリウレン樹脂を水に可溶な溶剤に溶解させてなるポリウレタン溶液を布帛にコーティングし、これを湿式ゲル化させ、溶剤が水によって置換される時に布帛上に形成される多孔質のポリウレタン被膜が雨やその他の水は通さず、湿気（水蒸気）は通すといういわゆる透湿性を有するものが開示されている。
【０００３】
しかしながら、従来の多孔膜では、膜表面および多孔膜内に一度結露が発生するとべとつき感が生じ快適性が非常に低下する問題があった。
【０００４】
また、親水性樹脂を用いることにより、汗の水滴を吸収させることができるが、一旦水分を吸収すると容易に水分を放出しないため樹脂表面がべとつく欠点があった。
【０００５】
【発明が解決しようとする課題】
本発明の目的は上記のごとき従来の問題点を解決し、防水性に加えて快適性を併せ持つ新規な防水加工布帛およびその製造方法を提供しようとするものである。
【０００６】
【課題を解決するための手段】
本発明者らは、鋭意検収した結果、コーティング法または接合法によるウレタン樹脂膜の防水層であり、該防水層がウレタンを主成分とする微多孔質膜または透湿性を有するウレタンを主成分とする無孔質膜を含むものであって、その上に有機球状粒子を有する混合高分子樹脂層を部分的に積層することにより、樹脂面の滑り摩擦抵抗値の低下と視覚的感覚を含めた樹脂表面の心地よい肌触りとさらっとしたべとつきおよびタック感の少ないドライな防水加工布帛が得られることを見出した。
【０００７】
すなわち、上記の目的を達成するため本発明は以下の構成を採用する。
【０００８】
（１）布帛の片面にコーティング法または接合法によるウレタン樹脂膜の防水層を有し、該防水層がウレタンを主成分とする微多孔質膜または透湿性を有するウレタンを主成分とする無孔質膜を含むものであり、該防水層面側に粒径が５μｍから２００μｍの有機球状粒子を固形分比で２０％から２００％に分散した樹脂が部分的に積層され、有機球状粒子を分散した樹脂の表面のＫＥＳ法による平均摩擦係数（ＭＩＵ）がタテ方向およびヨコ方向ともに０．８以下であることを特徴とする防水加工布帛。
【０００９】
（２）耐水圧が１０ｋＰａ以上であることを特徴とする前記（１）に記載の防水加工布帛。
【００１２】
（３）コーティング法または接合法によるウレタン樹脂膜の防水層がウレタンを主成分とする微多孔質膜に透湿性を有する無孔質膜を積層してなることを特徴とする前記（１）または（２）のいずれかに記載の防水加工布帛。
【００１４】
（４）Ａ−１透湿度が２，５００ｇ／ｍ２・ｈｒ以上であることを特徴とする前記（１）〜（３）のいずれかに記載の防水加工布帛。
【００１５】
（５）有機球状粒子を分散した樹脂が透湿性を有するウレタンを主成分とすることを特徴とする前記（１）〜（４）のいずれかに記載の防水加工布帛。
【００１６】
（６）有機球状粒子がアクリル樹脂を主成分としてなることを特徴とする前記（１）〜（５）のいずれかに記載の防水加工布帛。
【００１７】
（７）有機球状粒子の重量分布が２以上のピークを有することを特徴とする前記（１）〜（６）のいずれかに記載の防水加工布帛。
【００１８】
（８）有機球状粒子を分散した高分子樹脂をグラビアコーティング方式により積層する工程を含み、前記（１）〜（７）のいずれかに記載の防水加工布帛を製造することを特徴とする防水加工布帛の製造方法。
【００１９】
【発明の実施の形態】
本発明の防水加工布帛に用いる布帛としては、使用目的等に応じて適宜なものを用いることができるが、例を挙げると、ナイロン繊維やポリエステル繊維、ポリアミド繊維の如き合成繊維、アセテート繊維の如き半合成繊維、綿や麻や羊毛の如き天然繊維を単独でまたは２種以上を混合して、織物や編物、不織布等特に限定なく用いることができる。
【００２０】
防水布帛の防水層を形成する樹脂については、例を挙げると、ポリエステル共重合系、ポリエーテル共重合系、あるいはポリカーボネート共重合系のポリウレタンシリコーン、フッ素、アミノ酸等を共重合したポリウレタンを用いることができる。
【００２１】
後述するような透湿性を付与させるためには、例えば、
（１）ウレタンを主成分とする微多孔質膜
（２）透湿性を有するウレタンを主成分とする無孔質膜
等がある。
【００２２】
また、上記（１）のような微多孔質膜に、透湿性を有する無孔質膜をさらに積層することも好ましい。
【００２３】
本発明の防水加工布帛は、防水面側にさらに粒子を分散した樹脂を積層してなる。
【００２４】
分散する粒子は、球状であることが重要である。球状であるとは、針状や破片状など、鋭角的な角を有する粒子は除外する趣旨である。鋭角的な角を有する粒子は、本発明に採用した場合、引っかかり感の原因となり、滑らかさやさらっとしたドライ感を得ることができない。
【００２５】
また、粒子の粒径は５μｍから２００μｍとし、分散させる樹脂に対する比率は固形分比で２０％から２００％とすることが重要である。粒子の粒径が５μｍ未満では粒子が小さすぎてドライな触感が得られず、また、２００μｍを越えると粒子が大きすぎてザラザラ感が顕著になるからである。また、配合量が２０％未満では粒子が少なすぎ滑り性が得られず、また、２００％を越えるとそれ以上の効果が得られず、逆に洗濯等による脱落が顕著になってくる。
【００２６】
また粒子についてはさらに、重量分布が２以上のピークを有することが好ましい。さらにまた、重量分布で正規分布させた粒径のものを少なくとも２種類以上配合することが望ましい。重量分布で正規分布させると、個数分布では平均的な分布になり、かつ２種類以上配合させることにより、樹脂へのより均一な分散が可能となる。粒子径の大きいものでドライなタッチ感が発現し、粒子径の小さいもので摩擦係数がより低下するものと考えられ、これによりざらざら感がなくなり、より快適性に優れる防水布帛が得られる。
【００２７】
球状粒子の組成については、球状の有機粒子であり、水または塗布工程やクリーニングで用いるような溶剤に不溶であり、かつ膨潤が少ないことが望ましい。水に溶解または膨潤しやすいと汗や洗濯により脱落が生じ、また、塗布工程で用いるジメチルホルムアミドやメチルエチルケトン等の溶剤に溶解すると樹脂に配合する際溶解し、所用の目的が果たせなくなる。また、ドライクリーニングに用いる石油系溶剤やパーク連等の溶剤に溶けると洗濯耐久性がなくなる。特にアクリル樹脂を中心とするものは樹脂へのなじみ、分散性に優れており、空洞がないため、破損の危険性が少ない。また、透明性が高く、意匠性の点から顔料を配合した場合も発色性が高い特徴があり特に有効である。
【００２８】
粒子を分散する樹脂については特に限定しないが、快適性の点から透湿性を有することが望ましい。
【００２９】
粒子を分散した樹脂は、防水層上に部分的に積層する。部分的に積層した場合には、防水層が透湿性をも有するものである場合には透湿性による快適性も損なわず、またコスト的にも好ましい。部分的に積層する場合、上記のような点から、点状、格子状、ストライプ状など、効率よい分布状態であることが好ましい。
【００３０】
粒子を分散した樹脂の表面のＫＥＳ法による平均摩擦係数（ＭＩＵ）はタテ方向およびヨコ方向とも０．８以下である。０．８以下とすることで、着用時に摩擦抵抗による不快感がなくなる。さらには、摩擦により膜面に傷が入り防水性が低下することもない。好ましくは、洗濯後も０．８以下を維持するものであることが望ましい。
【００３１】
本発明の防水性加工布帛は、実用上の防水性の点から耐水圧が１０ｋＰａ以上であることが好ましい。
【００３２】
また、本発明の防水性加工布帛は、透湿性としてＡ−１法で２，５００ｇ／ｍ2・hr以上、もしくはＢ−１法で４，０００ｇ／ｍ2・hr以上を有することが望ましい。これを満たすことにより着用時に蒸れ感を感じないようになる。
【００３３】
次に、本発明の防水加工布帛の製造方法について説明する。
【００３４】
布帛へのポリウレタン膜の防水層の積層方法としては、布帛にダイレクトにコーティングしたり、離型紙にコーティング等で形成した防水層を接着剤を用いてドットもしくは、全面接着で布帛に接合させた後離型紙を剥離する方法があるが、これらに限定されない。
【００３５】
特に前述のように透湿性をも有する防水層を積層するには、
（１）ポリウレタンを主成分とする樹脂を水に可溶な溶剤に溶解させてなるポリウレタン溶液を布帛にコーティングし、これを湿式ゲル化させて透湿性と防水性を併せ持つ微多孔質膜を形成する方法、
（２）透湿性を有するポリウレタンを主成分とする樹脂を布帛にコーティングし、これを乾燥させることにより透湿性と防水性を併せ持つ無孔質膜を形成する方法、
等があるが特に限定されるものではない。
【００３６】
なお、コーティング方式としてはナイフコーティング、ナイフオーバーロールコーティング、リバースロールコーティングなど各種のコーティング法を実施できる。
【００３７】
有機球状粒子を分散したウレタン樹脂を防水層面に部分的に積層する方法としては、例えば、コーティングする方法がある。コーティング方式としては、グラビアコーティング、ナイフコーティング、ナイフオーバーロールコーティング、リバースロールコーティングなど各種のコーティング法を実施できるが、有機球状粒子を含む混合高分子樹脂を点状に塗布積層するにはグラビア（凹版）コーティング方式を用いてコーティングするのが、均一に分散させるのに優れている。また意匠性を重視する場合は、顔料等を配合しても良いのはもちろんのこと、柄状にプリントしたり、多色塗りをしても構わない。
【００３８】
【実施例】
以下、本発明を実施例で詳細に説明するが本発明はこれらに限定されるものではない。
（測定方法）
（１）耐水圧ＪＩＳ規格Ｌ−１０９２による。
（２）透湿度の測定は、ＪＩＳ規格Ｌ−１０９９（Ａ−１及びＢ−１）による。
（３）ＫＥＳ法による平均摩擦係数（ＭＩＵ）
カトーテック（株）製のＫＥＳ−ＦＢ４を用いて測定した。糸目を通した２０ｃｍ×２０ｃｍの試料を平滑な金属表面上におき、１９．６ｃＮ／ｃｍの一軸張力をかけて０．５ｍｍのピアノ線を移動軸方向に垂直に１０本並べた摩擦面寸法が５ｍｍ×５ｍｍの接触子を５０ｇｆの荷重で試料の膜面に圧着し、試料を０．１ｃｍ／ｓｅｃの速度で水平に２ｃｍ移動させたときの摩擦抵抗力から平均摩擦係数（ＭＩＵ）を求めた。ＭＩＵは次式により求められる。
【００３９】
ＭＩＵ＝（１／Ｘ）∫0 X μdx
ここでμ＝摩擦力／試料を圧する力（５０ｇｆ）
ｘ：試料表面上の位置
Ｘ：移動距離（２ｃｍ）
（４）肌触り
肌触りについては樹脂面を手の平および甲、上腕部の皮膚の触感を４段階で評価した。
【００４０】
◎：タック感なくドライ
○：ほとんどタック感なくドライ
△：ややタック感あり
×：タック感あり。
（５）洗濯
ＪＩＳ規格Ｌ−０２１７の（番号）１０３の方法に準じた。
【００４１】
［実施例１］
７０デニールのナイロンフィラメントヤーンで構成されたナイロンタフタを、フッ素系撥水剤アサヒガードＡＧ７１０（明成化学（株）製）を３重量％に含有した水分散液に浸漬し、絞り率４０％にピックアップしヒートセッターにて１３０℃×３０秒の乾燥熱処理を施すことにより、撥水処理を行った。
ここで、下記処方１に示す組成でポリウレタン溶液をナイフオーバーロールコーターにて１３０ｇ／ｍ2 の割合で塗工し、ＤＭＦを１０重量％含有した水溶液を凝固液とする浴槽中に３０℃にて３分間浸漬してポリウレタン塗布液を湿式凝固させ、ついで８０℃の温湯にて１０分間水洗し、１４０℃にて熱風乾燥し微多孔質膜加工品を得た。
つぎに、下記処方２に示す組成でポリウレタン溶液を上記微多孔質膜上にグラビアコーター（３２メッシュ、開孔率５０％）にて塗工し、ついで８０℃にて熱風乾燥し、さらに１６０℃にて３分間熱処理をして、本発明の防水加工布帛を得た。得られた布帛について、耐水圧、透湿度および膜面の平均摩擦係数（ＭＩＵ）を測定し、触感にて肌触りを評価（初期、洗濯１０回後）した。結果を、表１に示した。
【００４２】
（処方１）
クリスボン８１６６：１００部（大日本インキ化学工業株式会社製、ポリエステル系ポリウレタン）
バーノックＤ５００： １部（大日本インキ化学工業株式会社製、ブロックイソシアネート）
サイリシア＃３５０： ５部（富士デヴィソン化学株式会社製、多孔質シリカゲル）
ＤＭＦ ： ５０部。
【００４３】
（処方２）
ハイムレンＹ−２６２：１００部（大日精化製、ポリエーテル系ポリウレタン、（厚さ12μｍの透湿度（Ａ−１）５,５００ｇ／ｍ2・hr））
架橋アクリル粒子Ａ： １５部（平均重量粒子径２８μｍ、粒子径５〜５０μｍ）
架橋アクリル粒子Ｂ： １５部（平均重量粒子径４０μｍ、粒子径１０〜８０μｍ）
ＭＥＫ： ７５部
トルエン： ７５部。
【００４４】
［実施例２］
上記実施例１と同処方にて得られた微多孔質膜に、下記処方３に示す組成でポリウレタン溶液をナイフオーバーロールを使用してクリアランス５０μで塗工し、ついで８０℃にて熱風乾燥して、微多孔質膜に無孔質皮膜を積層した２層膜を有する透湿性防水膜加工品を得た。
つぎに、上記記処方２に示す組成でポリウレタン溶液を上記微多孔質膜上にグラビアコーター（３２メッシュ、開孔率５０％）にて塗工し、ついで８０℃にて熱風乾燥し、さらに１６０℃にて３分間熱処理をして、本発明の防水加工布帛を得た。得られた布帛について、耐水圧、透湿度及び膜面の平均摩擦係数（ＭＩＵ）を測定し、触感にて肌触りを評価（初期、洗濯１０回後）した。結果を、表１に示した。
【００４５】
（処方３）
ハイムレンＹ−２６２：１００部（大日精化製、ポリエーテル系ポリウレタン、（厚さ12μｍの透湿度（Ａ−１）５,５００ｇ／ｍ2・hr））
ＭＥＫ： ２５部
トルエン： ２５部。
【００４６】
［実施例３］
上記実施例１と同処方にてナイロンタフタの基布に撥水前処理を行なった。
つぎに、下記処方４に示す組成でポリウレタン溶液をナイフオーバーロールを使用してクリアランス２００μで塗工し、ついで８０℃にて熱風乾燥して、更に上記処方３に示す組成でポリウレタン溶液をナイフオーバーロールを使用してクリアランス５０μで塗工し、ついで８０℃にて熱風乾燥して、無孔質膜透湿性防水加工品を得た。
つぎに、上記記処方２に示す組成でポリウレタン溶液を上記透湿性防水膜上にグラビアコーター（３２メッシュ、開孔率５０％）にて塗工し、ついで８０℃にて熱風乾燥し、さらに１６０℃にて３分間熱処理をして、本発明の防水加工布帛を得た。得られた布帛について、耐水圧、透湿度および膜面の平均摩擦係数（ＭＩＵ）を測定し、触感にて肌触りを評価（初期、洗濯１０回後）した。結果を、表１に示した。
【００４７】
（処方４）
ハイムレンＹ−２６５：１００部（大日精化製、ポリエーテル系ポリウレタン（厚さ12μｍの透湿度（Ａ−１）６,３００ｇ／ｍ2 ・hr））
レザミンＸ−１００架橋剤： １部（大日精化製、イソシアネート系架橋剤）
ＭＥＫ： ２５部
トルエン： ２５部。
【００４８】
［比較例１］
上記実施例１と同処方にてナイロンタフタの基布上に微多孔質膜を作製し、さらに１６０℃にて３分間熱処理をして、透湿性防水加工布帛を得た。得られた布帛について、耐水圧、透湿度および膜面の平均摩擦係数（ＭＩＵ）を測定し、触感にて肌触りを評価（初期、洗濯１０回後）した。結果を、表１に示した。
【００４９】
［比較例２］
上記実施例１と同処方にて得られた微多孔質膜加工品に、下記処方５に示す組成でポリウレタン溶液を上記微多孔質膜上にグラビアコーター（３２メッシュ、開孔率５０％）にて塗工し、ついで８０℃にて熱風乾燥し、さらに１６０℃にて３分間熱処理をして、透湿性防水加工布帛を得た。得られた布帛について、耐水圧、透湿度および膜面の平均摩擦係数（ＭＩＵ）を測定し、触感にて肌触りを評価（初期、洗濯１０回後）した。結果を、表１に示した。
【００５０】
（処方５）
ハイムレンＹ−２６２：１００部（大日精化製、ポリエーテル系ポリウレタン（厚さ12μｍの透湿度（Ａ−１）５,５００ｇ／ｍ2・hr））
ＭＥＫ： ７５部
トルエン： ７５部。
【００５１】
［比較例３］
上記実施例２と同処方にて得られた透湿性防水膜加工品に、さらに１６０℃にて３分間熱処理をして、透湿性防水加工布帛を得た。得られた布帛について、耐水圧、透湿度および膜面の平均摩擦係数（ＭＩＵ）を測定し、触感にて肌触りを評価（初期、洗濯１０回後）した。結果を、表１に示した。
【００５２】
［比較例４］
上記実施例３と同処方にて得られた透湿性防水膜加工品に、さらに１６０℃にて３分間熱処理をして、透湿性防水加工布帛を得た。得られた布帛について、耐水圧、透湿度および膜面の平均摩擦係数（ＭＩＵ）を測定し、触感にて肌触りを評価（初期、洗濯１０回後）した。結果を、表１に示した。
【００５３】
【表１】
【発明の効果】
本発明によって、樹脂面の滑り摩擦係数の低下と感覚的な樹脂表面の心地よい肌触りとさらっとしたべとつきおよびタックの少ないドライな防水加工布帛を得ることができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a waterproof fabric having comfort that is preferably used in sports clothing, rain clothing, and the like.
[0002]
[Prior art]
As a waterproof fabric, for example, in Japanese Patent Laid-Open No. 60-47954, a polyurethane solution obtained by dissolving a polyurene resin in a water-soluble solvent is coated on the fabric, and this is wet-gelled. The porous polyurethane film formed on the fabric when it is replaced by water has a so-called moisture permeability property that does not allow rain and other water to pass therethrough and allows moisture (water vapor) to pass therethrough.
[0003]
However, the conventional porous membrane has a problem that once the condensation occurs on the membrane surface and in the porous membrane, a feeling of stickiness is generated and the comfort is greatly reduced.
[0004]
Further, by using a hydrophilic resin, water droplets of sweat can be absorbed. However, once moisture is absorbed, moisture is not easily released, so that there is a drawback that the resin surface is sticky.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to solve the conventional problems as described above, and to provide a novel waterproof fabric having a comfort in addition to a waterproof property and a manufacturing method thereof.
[0006]
[Means for Solving the Problems]
As a result of earnest inspection, the inventors of the present invention have a waterproof layer of a urethane resin film by a coating method or a bonding method , and the waterproof layer has a microporous film containing urethane as a main component or urethane having moisture permeability as a main component. nonporous membrane comprise a, by laminating the mixed polymer resin layer having an organic spherical particles over its part, including the reduction and visual sense of sliding friction resistance of the resin surface which It has been found that a dry waterproof fabric with a pleasant feel on the surface of the resin, a smooth stickiness and a feeling of tackiness can be obtained.
[0007]
That is, in order to achieve the above object, the present invention adopts the following configuration.
[0008]
(1) A waterproof layer of a urethane resin film formed by a coating method or a bonding method is provided on one side of the fabric, and the waterproof layer is a microporous film mainly composed of urethane or non-porous composed mainly of urethane having moisture permeability. is intended to include a Shitsumaku, resin particle size is dispersed organic spherical particles of 200μm from 5μm and 20% by solid content ratio to 200% to the waterproof layer side is partially laminated, dispersed organic spherical particles A waterproof fabric characterized in that the average friction coefficient (MIU) of the resin surface by the KES method is 0.8 or less in both the vertical and horizontal directions.
[0009]
(2) The waterproof fabric according to (1) above, wherein the water pressure resistance is 10 kPa or more.
[0012]
( 3 ) The above-mentioned ( 1) or ( 3), wherein the waterproof layer of the urethane resin film formed by a coating method or a bonding method is formed by laminating a nonporous film having moisture permeability on a microporous film mainly composed of urethane. The waterproof fabric according to any one of (2) .
[0014]
( 4 ) The waterproof fabric according to any one of (1) to ( 3 ), wherein A-1 moisture permeability is 2,500 g / m 2 · hr or more.
[0015]
( 5 ) The waterproof fabric according to any one of the above (1) to ( 4 ), wherein the resin in which the organic spherical particles are dispersed contains urethane having moisture permeability as a main component.
[0016]
( 6 ) The waterproof fabric according to any one of (1) to ( 5 ), wherein the organic spherical particles are mainly composed of an acrylic resin.
[0017]
( 7 ) The waterproof fabric according to any one of (1) to ( 6 ), wherein the weight distribution of the organic spherical particles has two or more peaks.
[0018]
( 8 ) A waterproofing process characterized by producing the waterproof fabric according to any one of (1) to ( 7 ), including a step of laminating a polymer resin in which organic spherical particles are dispersed by a gravure coating method. Fabric manufacturing method.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
As the fabric used for the waterproof fabric of the present invention, an appropriate fabric can be used according to the purpose of use. For example, synthetic fibers such as nylon fiber, polyester fiber and polyamide fiber, and acetate fiber can be used. Semi-synthetic fibers, natural fibers such as cotton, hemp, and wool can be used alone or in admixture of two or more without any particular limitation, such as woven fabrics, knitted fabrics, and non-woven fabrics.
[0020]
The resin for forming the waterproof layer of waterproof fabric, by way of example, a polyester copolymer based, polyether-copolymer-based, or polycarbonate copolymer based polyurethane silicones, fluorine, be used a polyurethane obtained by copolymerizing amino acids it can.
[0021]
In order to impart moisture permeability as described below, for example,
(1) Microporous membrane mainly composed of urethane (2) Nonporous membrane mainly composed of urethane having moisture permeability
Etc.
[0022]
It is also preferable to further laminate a non-porous film having moisture permeability on the microporous film as described in (1) above.
[0023]
The waterproof fabric of the present invention is formed by laminating a resin in which particles are further dispersed on the waterproof surface side.
[0024]
It is important that the dispersed particles are spherical. The term “spherical” is intended to exclude particles having sharp corners such as needles and fragments. When the particles having acute corners are employed in the present invention, they cause a feeling of catching and cannot obtain smoothness or a dry feeling.
[0025]
In addition, it is important that the particle diameter of the particles is 5 μm to 200 μm, and the ratio to the resin to be dispersed is 20% to 200% in terms of solid content. This is because if the particle size is less than 5 μm, the particles are too small to obtain a dry tactile sensation, and if the particle size exceeds 200 μm, the particles are too large and the rough feeling becomes remarkable. On the other hand, if the blending amount is less than 20%, the amount of particles is too small to obtain slipperiness. If the blending amount exceeds 200%, no further effect can be obtained, and conversely, falling off due to washing or the like becomes remarkable.
[0026]
The particles preferably further have a peak with a weight distribution of 2 or more. Furthermore, it is desirable to blend at least two kinds of particles having a particle size that is normally distributed by weight distribution. When the normal distribution is used for the weight distribution, the number distribution is an average distribution, and by mixing two or more types, more uniform dispersion into the resin is possible. It is considered that a dry touch feeling is developed with a large particle diameter, and a friction coefficient is further lowered with a small particle diameter, thereby eliminating a rough feeling and providing a waterproof fabric with more excellent comfort.
[0027]
As for the composition of the spherical particles, it is desirable that they are spherical organic particles, insoluble in water or a solvent used in the coating process or cleaning, and less swelled. If it is easily dissolved or swelled in water, it will fall off due to sweat or washing, and if dissolved in a solvent such as dimethylformamide or methyl ethyl ketone used in the coating process, it will dissolve when blended into the resin and will not serve its intended purpose. In addition, when it is dissolved in a petroleum solvent used for dry cleaning or a solvent such as Park Ream, washing durability is lost. In particular, those mainly made of acrylic resin are familiar to the resin and have excellent dispersibility, and since there is no cavity, there is little risk of breakage. In addition, when pigments are blended from the viewpoint of high transparency and design properties, they are also particularly effective because of their high color developability.
[0028]
The resin in which the particles are dispersed is not particularly limited, but it is desirable to have moisture permeability from the viewpoint of comfort.
[0029]
The resin in which the particles are dispersed is partially laminated on the waterproof layer. When partially laminated, if the waterproof layer also has moisture permeability, comfort due to moisture permeability is not impaired, and it is preferable in terms of cost. If partially stacked, from a point above, point-like, grid-like, etc. stripe, it is preferable efficiency is good distribution.
[0030]
The average coefficient of friction by KES method on the surface of the resin containing dispersed particles (MIU) is Ru der 0.8 both longitudinal direction and transverse direction. By making it 0.8 or less, there is no discomfort due to frictional resistance during wearing. Further, the film surface is not damaged by friction and the waterproof property is not lowered. Preferably, it is desirable to maintain 0.8 or less even after washing.
[0031]
The waterproof fabric of the present invention preferably has a water pressure resistance of 10 kPa or more from the viewpoint of practical waterproofness.
[0032]
Further, the waterproof fabric of the present invention desirably has a moisture permeability of 2,500 g / m 2 · hr or more by the A-1 method or 4,000 g / m 2 · hr or more by the B-1 method. Satisfying this will prevent you from feeling stuffy when worn.
[0033]
Next, the manufacturing method of the waterproof fabric of this invention is demonstrated.
[0034]
As a method for laminating a waterproof layer of a polyurethane film on a fabric, after the waterproof layer formed by coating the fabric directly or by coating the release paper is bonded to the fabric by dots or full adhesion using an adhesive Although there is a method of peeling the release paper, it is not limited to these methods.
[0035]
In particular, in order to laminate a waterproof layer having moisture permeability as described above,
(1) A polyurethane solution prepared by dissolving a polyurethane-based resin in a water-soluble solvent is coated on a fabric, and this is gelled to form a microporous film having both moisture permeability and waterproofness. how to,
(2) A method of forming a nonporous film having both moisture permeability and waterproof properties by coating a fabric with a moisture-permeable polyurethane-based resin as a main component and drying the fabric.
There are equal but not particularly limited.
[0036]
As a coating method, various coating methods such as knife coating, knife over roll coating, and reverse roll coating can be performed.
[0037]
As a method of partially laminating urethane resin in which organic spherical particles are dispersed on the waterproof layer surface, for example, there is a coating method. Various coating methods such as gravure coating, knife coating, knife over roll coating, and reverse roll coating can be applied as the coating method, but gravure (intaglio) is used for coating and laminating mixed polymer resins containing organic spherical particles. ) Coating using the coating method is excellent for uniform dispersion. In addition, when emphasizing the design property, it is possible to add a pigment or the like, as well as to print in a pattern or to apply multicolor.
[0038]
【Example】
EXAMPLES Hereinafter, although an Example demonstrates this invention in detail, this invention is not limited to these.
(Measuring method)
(1) Water pressure resistance According to JIS standard L-1092.
(2) Measurement of moisture permeation degree, according to JIS Standard L-1099 (A-1 and B-1).
(3) Average friction coefficient (MIU) by KES method
Measurement was performed using KES-FB4 manufactured by Kato Tech Co., Ltd. A 20 cm x 20 cm sample passed through the thread is placed on a smooth metal surface, and a friction surface dimension is obtained by arranging 10 piano wires of 0.5 mm perpendicular to the moving axis direction by applying a uniaxial tension of 19.6 cN / cm. An average friction coefficient (MIU) was obtained from the frictional resistance when a 5 mm × 5 mm contact was pressed against the membrane surface of the sample with a load of 50 gf and the sample was moved 2 cm horizontally at a speed of 0.1 cm / sec. . MIU is obtained by the following equation.
[0039]
MIU = (1 / X) ∫ 0 X μdx
Where μ = friction force / force to press the sample (50 gf)
x: Position on the sample surface X: Movement distance (2 cm)
(4) Feeling The feel of the skin on the palm and back of the resin surface and the upper arm was evaluated in four stages.
[0040]
◎: Tacky dry ○: Almost tacky dry △: Slightly tacky ×: Tacky.
(5) Washing Conforms to the method of (number) 103 of JIS standard L-0217.
[0041]
[Example 1]
Nylon taffeta composed of 70 denier nylon filament yarn is dipped in an aqueous dispersion containing 3% by weight of a fluorine-based water repellent Asahi Guard AG710 (manufactured by Meisei Chemical Co., Ltd.) and picked up to a drawing ratio of 40%. A water repellent treatment was performed by performing a drying heat treatment at 130 ° C. for 30 seconds with a heat setter.
Here, a polyurethane solution having the composition shown in the following prescription 1 was applied at a rate of 130 g / m 2 with a knife over roll coater, and at 30 ° C. in a bath having an aqueous solution containing 10% by weight of DMF as a coagulating liquid. The polyurethane coating solution was wet coagulated by dipping for 3 minutes, then washed with hot water at 80 ° C. for 10 minutes and dried with hot air at 140 ° C. to obtain a microporous membrane processed product.
Next, a polyurethane solution having the composition shown in the following prescription 2 is coated on the microporous film with a gravure coater (32 mesh, 50% porosity), then dried with hot air at 80 ° C., and further 160 ° C. Was subjected to heat treatment for 3 minutes to obtain a waterproof fabric of the present invention. With respect to the obtained fabric, the water pressure resistance, moisture permeability and average friction coefficient (MIU) of the film surface were measured, and the touch was evaluated by tactile sensation (initial, after 10 washes). The results are shown in Table 1.
[0042]
(Prescription 1)
Crisbon 8166: 100 parts (Dainippon Ink Chemical Co., Ltd., polyester polyurethane)
Burnock D500: 1 part (Dainippon Ink Chemical Co., Ltd., blocked isocyanate)
Silicia # 350: 5 parts (Fuji Devison Chemical Co., Ltd., porous silica gel)
DMF: 50 parts.
[0043]
(Prescription 2)
Heimlen Y-262: 100 parts (manufactured by Dainichi Seika Co., Ltd., polyether polyurethane, (moisture permeability of 12 μm thick (A-1) 5,500 g / m 2 · hr))
Cross-linked acrylic particles A: 15 parts (average weight particle size 28 μm, particle size 5 to 50 μm)
Cross-linked acrylic particles B: 15 parts (average weight particle size 40 μm, particle size 10-80 μm)
MEK: 75 parts Toluene: 75 parts.
[0044]
[Example 2]
A polyurethane solution having the composition shown in Formula 3 below was applied to the microporous membrane obtained by the same formulation as in Example 1 above using a knife over roll with a clearance of 50μ, and then dried with hot air at 80 ° C. Thus, a moisture-permeable waterproof membrane processed product having a two-layer film obtained by laminating a nonporous film on a microporous film was obtained.
Next, a polyurethane solution having the composition shown in the above-mentioned prescription 2 is coated on the microporous membrane with a gravure coater (32 mesh, 50% porosity), then dried with hot air at 80 ° C., and 160 Heat treatment was performed at 0 ° C. for 3 minutes to obtain a waterproof fabric of the present invention. With respect to the obtained fabric, the water pressure resistance, moisture permeability, and average friction coefficient (MIU) of the film surface were measured, and the touch was evaluated by tactile sensation (initial, after 10 washes). The results are shown in Table 1.
[0045]
(Prescription 3)
Heimlen Y-262: 100 parts (manufactured by Dainichi Seika Co., Ltd., polyether polyurethane, (moisture permeability of 12 μm thick (A-1) 5,500 g / m 2 · hr))
MEK: 25 parts Toluene: 25 parts.
[0046]
[Example 3]
A water repellent pretreatment was performed on a nylon taffeta base fabric in the same formulation as in Example 1 above.
Next, a polyurethane solution having the composition shown in the following formula 4 is applied with a clearance of 200 μm using a knife over roll, then dried with hot air at 80 ° C., and the polyurethane solution having a composition shown in the above formula 3 is knife over. Coating was performed with a clearance of 50 μ using a roll, followed by hot air drying at 80 ° C. to obtain a non-porous membrane moisture-permeable waterproof processed product.
Next, a polyurethane solution having the composition shown in the above-mentioned prescription 2 is coated on the moisture-permeable waterproof membrane with a gravure coater (32 mesh, 50% porosity), then dried with hot air at 80 ° C., and 160 Heat treatment was performed at 0 ° C. for 3 minutes to obtain a waterproof fabric of the present invention. With respect to the obtained fabric, the water pressure resistance, moisture permeability and average friction coefficient (MIU) of the film surface were measured, and the touch was evaluated by tactile sensation (initial, after 10 washes). The results are shown in Table 1.
[0047]
(Prescription 4)
Heimlen Y-265: 100 parts (manufactured by Dainichi Seika Co., Ltd., polyether-based polyurethane (moisture permeability of 12 μm in thickness (A-1) 6,300 g / m 2 · hr))
Rezamin X-100 crosslinking agent: 1 part (manufactured by Dainichi Seika Co., Ltd., isocyanate crosslinking agent)
MEK: 25 parts Toluene: 25 parts.
[0048]
[Comparative Example 1]
A microporous membrane was prepared on a nylon taffeta base fabric in the same formulation as in Example 1, and heat treated at 160 ° C. for 3 minutes to obtain a moisture-permeable waterproof fabric. With respect to the obtained fabric, the water pressure resistance, moisture permeability and average friction coefficient (MIU) of the film surface were measured, and the touch was evaluated by tactile sensation (initial, after 10 washes). The results are shown in Table 1.
[0049]
[Comparative Example 2]
In the microporous membrane processed product obtained by the same formulation as in Example 1 above, a polyurethane solution with a composition shown in Formula 5 below is applied to the gravure coater (32 mesh, 50% porosity) on the microporous membrane. And then dried with hot air at 80 ° C. and further heat treated at 160 ° C. for 3 minutes to obtain a moisture-permeable waterproof fabric. With respect to the obtained fabric, the water pressure resistance, moisture permeability and average friction coefficient (MIU) of the film surface were measured, and the touch was evaluated by tactile sensation (initial, after 10 washes). The results are shown in Table 1.
[0050]
(Prescription 5)
Heimlen Y-262: 100 parts (manufactured by Dainichi Seika Co., Ltd., polyether-based polyurethane (moisture permeability of 12 μm in thickness (A-1) 5,500 g / m 2 · hr))
MEK: 75 parts Toluene: 75 parts.
[0051]
[Comparative Example 3]
The moisture-permeable waterproof membrane processed product obtained in the same formulation as in Example 2 was further heat-treated at 160 ° C. for 3 minutes to obtain a moisture-permeable waterproof fabric. With respect to the obtained fabric, the water pressure resistance, moisture permeability, and average friction coefficient (MIU) of the film surface were measured, and the touch was evaluated by tactile sensation (initial, after 10 washings). The results are shown in Table 1.
[0052]
[Comparative Example 4]
The moisture-permeable waterproof membrane processed product obtained in the same formulation as in Example 3 was further heat-treated at 160 ° C. for 3 minutes to obtain a moisture-permeable waterproof fabric. With respect to the obtained fabric, the water pressure resistance, moisture permeability, and average friction coefficient (MIU) of the film surface were measured, and the touch was evaluated by tactile sensation (initial, after 10 washings). The results are shown in Table 1.
[0053]
[Table 1]
【The invention's effect】
According to the present invention, it is possible to obtain a dry waterproof fabric with a reduced sliding friction coefficient on the resin surface, a pleasant feel on the resin surface, a smooth stickiness, and less tack.
Claims (8)
Priority Applications (11)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000240935A JP3718422B2 (en) | 2000-08-09 | 2000-08-09 | Waterproof fabric and method for producing the same |
| US10/089,768 US6774065B2 (en) | 2000-08-09 | 2001-08-03 | Waterproof-finished fabric and waterproof clothing |
| EP20010954422 EP1283295B1 (en) | 2000-08-09 | 2001-08-03 | Waterproof-finished fabric and waterproof clothing |
| PCT/JP2001/006681 WO2002012617A1 (en) | 2000-08-09 | 2001-08-03 | Waterproof-finished fabric and waterproof clothing |
| KR1020027004554A KR100793188B1 (en) | 2000-08-09 | 2001-08-03 | Waterproof-finished fabric and waterproof clothing |
| CA 2386870 CA2386870C (en) | 2000-08-09 | 2001-08-03 | Waterproofed fabric and waterproof article of clothing |
| AT01954422T ATE465651T1 (en) | 2000-08-09 | 2001-08-03 | WATER REPELLENT FABRIC AND WATER REPELLENT CLOTHING |
| DE60141953T DE60141953D1 (en) | 2000-08-09 | 2001-08-03 | WATER-REPELLENT FABRIC AND WATER-REPELLENT CLOTHING |
| CNB018023495A CN1210456C (en) | 2000-08-09 | 2001-08-03 | Waterproof-finished fabric and waterproof clothing |
| TW90119126A TWI302958B (en) | 2000-08-09 | 2001-08-06 | |
| NO20021632A NO331363B1 (en) | 2000-08-09 | 2002-04-05 | Waterproof textiles, waterproof garments, sealing tape and their use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000240935A JP3718422B2 (en) | 2000-08-09 | 2000-08-09 | Waterproof fabric and method for producing the same |
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| Publication Number | Publication Date |
|---|---|
| JP2002061077A JP2002061077A (en) | 2002-02-28 |
| JP3718422B2 true JP3718422B2 (en) | 2005-11-24 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007296798A (en) * | 2006-05-02 | 2007-11-15 | Teijin Fibers Ltd | Waterproof humidity permeable clothing |
| JP2007296797A (en) * | 2006-05-02 | 2007-11-15 | Teijin Fibers Ltd | Waterproof humidity permeable fabric for clothing |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4809048B2 (en) * | 2005-12-09 | 2011-11-02 | 平松産業株式会社 | Waterproof and breathable fabric |
| JP4767012B2 (en) * | 2005-12-28 | 2011-09-07 | 小松精練株式会社 | Moisture permeable waterproof fabric |
| JP4949066B2 (en) | 2007-02-21 | 2012-06-06 | 帝人ファイバー株式会社 | Waterproof and breathable fabric for clothing |
| JP6545473B2 (en) * | 2015-02-04 | 2019-07-17 | ユニチカトレーディング株式会社 | Bleeding prevention processing cloth |
| KR101898915B1 (en) * | 2017-02-21 | 2018-09-14 | (주)빗살무늬 | Manufacturing Method and production thereof of textile for cycling-wear by functional laminating |
-
2000
- 2000-08-09 JP JP2000240935A patent/JP3718422B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007296798A (en) * | 2006-05-02 | 2007-11-15 | Teijin Fibers Ltd | Waterproof humidity permeable clothing |
| JP2007296797A (en) * | 2006-05-02 | 2007-11-15 | Teijin Fibers Ltd | Waterproof humidity permeable fabric for clothing |
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| JP2002061077A (en) | 2002-02-28 |
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