JPWO2020053956A1 - ウエットスーツ用生地及び該生地を用いたウエットスーツ - Google Patents
ウエットスーツ用生地及び該生地を用いたウエットスーツ Download PDFInfo
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Abstract
Description
これは、着脱時に体に密着する内層の滑りを良くして着用の際の改善を志向する内層の提案であるが、表層の下には吸水性のあるナイロン層が基層として存在しており、内部のナイロン層まで一旦水分が浸透してしまえば、依然として乾燥しにくいものとなっており、濡れること自体を回避しきっておらず、ナイロン層同様にフッ素樹脂繊維層の伸縮性等が得られるのかも明らかではないため十分ではなく、依然として実用上の課題を抱えている。
この提案は、肌に接触する面の肌あたりの改善のために内層表面にポリエステル中空糸を設けているが、病院のシーツ等への転用が主であって、ウエットスーツとしての具体的特性は明らかではない。そして、ポリエステルの表層は、肌あたりのためであり、隙間が多くナイロン層へ伝わらせることを前提としているので、ナイロン織物が濡れるものである。また、この提案はナイロン織物との組合せであることから伸縮性に乏しいものであり、ウエットスーツとしての実用性は十分とはいえない。
もちろん、飽和蒸気を用いる以外に、風合いを犠牲にしない範囲で、乾熱として130℃や140℃といった熱を付与してヒートセット加工させることもできる。
本発明の実施品であるポリプロピレンベア天竺編物(P.P.ジャージ)を貼り合わせた2mm厚の発泡ゴム製スポンジシートのウエットスーツ生地と、ナイロンジャージを2mm厚の発泡ゴム製スポンジシートと貼り合わせたウエットスーツ生地を用いたフルスーツのウエットスーツを水洗後の重量変化を観察した。結果を表1に示す。
実施例の吸水率は15%、比較例のナイロンジャージの吸水率は28%であり、P.P.ジャージのほうが吸水しないことが確認された。
表2に示すように、本発明の実施品であるP.P.ジャージと、比較例のW/Nジャージ(ウーリーナイロン)について、抗菌性を確認した。P.P.ジャージのほうがナイロンジャージよりも抗菌性に優れている。
実施例のP.P.ジャージと比較例のW/Nジャージ(ウーリーナイロン製ジャージ、表面に撥水コーティングがされている。)に対して、JIS L1092に基づき、摩耗試験後の撥水性能の変化の様子を確認した。
摩耗処理10回、50回、100回、500回後、生地に水滴を噴霧するスプレー試験によって、撥水度を1〜3級の等級で評価した(試験は3回実施した)。3級はより撥水性が高いことを示し、1級は撥水性を伴っていないことを意味する。
1級:表面全体に湿潤を示すもの。
2級:表面の半分が湿潤し、小さな個々の湿潤は布を浸透する状態を呈しているもの。
3級:表面に小さな個々の水滴状の湿潤を示すもの
ナイロンジャージでは、摩耗処理10回でも撥水性がやや劣っており、摩耗処理100回では、ほぼ撥水性が失われた。500回も同様の結果であった。このナイロンジャージは、表面が撥水加工でコーティングされているが、ナイロンジャージは、摩耗や劣化により、急激に撥水性が失われることから、より吸水しやすく、乾きにくくなることが確認された。
他方、本発明のP.P.ジャージでは、500回試験後も撥水性は3級のまま変化がなく、撥水性が当初のままに維持されていた。
ウエットスーツを着用して50分ほど海水に入ってサーフィンに用いた際の実施品のPPジャージのウェットスーツとナイロンジャージの比較品とでの体温の保持具合を調べた。
着水後海水により26℃まで下がったウエットスーツ直下の体表面温度は、4分ほどで32℃まで上昇する。その後、実施品では、31.5℃をキープしたが、ナイロンジャージでは、30.5℃となった。このように、着用状態での体表面温度に差が生じるのは、ナイロンジャージの外層が濡れていることから、気化熱によって冷やされ易いからである。
本発明の実施品のポリプロピレンジャージにおいて、さらに熱融着ポリウレタン弾性繊維の弾性糸の伸長度を2倍以下で編みこんでヒートセットにより弾性糸同士を熱融着させたものは、伸長させる際に力を要せず引き伸ばすことができる。
たとえば、熱融着ポリウレタン弾性繊維が33デシテックス、ポリプロピレンマルチフィラメント糸が33デシテックス24本フィラメントのベア天竺編物を貼り合わしたウエットスーツ生地では、50%伸長させる際に必要な力が、編地のウェール方向(縦方向の伸び)では0.8N、コース方向(横方向の伸び)では0.2Nであった。(JIS 1096B法に基づき、幅5cmの試験片を自長さの50%伸長に要す力(低伸長時伸長力)を測定した。引張速度:20cm/min、つかみ間隔:20cm。)。非常によく伸長しており、ナイロンと同程度の伸びが十分に確保されることが確認された。
また、ポリプロピレンマルチフィラメント糸が56デシテックス、48本フィラメントのベア天竺編物を貼り合わしたウエットスーツ生地では、2.9倍に伸長した編地では、ウェール方向が1.8N、コース方向が0.8Nで伸長した。
2 クロロプレン発泡ゴム性スポンジシート
3 ベア天竺編物
4 外層面
5 内層面
6 ポリプロピレンマルチフィラメント糸
7 熱融着ポリウレタン弾性繊維
Claims (8)
- クロロプレン発泡ゴム製スポンジシートのいずれか一方の面あるいは双方の面に、ポリプロピレンマルチフィラメント糸と弾性糸とをプレーティング編した緯編地の布地を貼り合わせたウエットスーツ用生地。
- クロロプレン発泡ゴム製スポンジシートの少なくとも外層の面に、ポリプロピレンマルチフィラメント糸と弾性糸とをプレーティング編した緯編地の布地を貼り合わせたウエットスーツ用生地。
- 弾性糸が熱融着ポリウレタン弾性繊維であって、かつ緯編地の弾性糸が相互に熱融着されていること、を特徴とする請求項1又は2に記載のウエットスーツ用生地。
- 100〜140℃のヒートセットによって弾性糸が相互に熱融着された状態であることを特徴とする、請求項1から3のいずれか1項に記載のウエットスーツ用生地。
- 弾性糸が1.5〜2.3倍に伸長された状態でプレーティング編されていること、を特徴とする請求項1から4のいずれか1項に記載のウエットスーツ用生地。
- ポリプロピレンマルチフィラメント糸が20〜56デシテックスの太さで30本以内のフィラメント数であること、を特徴とする請求項1から5のいずれか1項に記載のウエットスーツ用生地。
- ポリプロピレンマルチフィラメント糸が20〜56デシテックスの太さであり、フィラメント1本あたりの太さが1デシテックス以上であること、を特徴とする請求項1から6のいずれか1項に記載のウエットスーツ用生地。
- 請求項1から7のいずれか1項に記載のウエットスーツ用生地を用いたウエットスーツ。
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JPH0650496Y2 (ja) * | 1992-11-10 | 1994-12-21 | シンギー株式会社 | ウェットスーツ用素材 |
JP3072358B2 (ja) * | 1993-04-30 | 2000-07-31 | 株式会社タンク | ウエットスーツ |
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JP2007182650A (ja) * | 2006-01-10 | 2007-07-19 | Nisshinbo Ind Inc | 熱融着ポリウレタン弾性繊維混用緯編地及び該緯編地を使用した衣類、並びに該緯編地の製造方法 |
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