JP2004347143A

JP2004347143A - Protecting material and protecting clothing

Info

Publication number: JP2004347143A
Application number: JP2003141524A
Authority: JP
Inventors: Toshiji Moriwaki; 淑次森脇; Yuki Ninomiya; 有希二ノ宮; Naoki Imaeda; 直樹今枝
Original assignee: Toray Industries Inc
Current assignee: Toray Industries Inc
Priority date: 2003-05-20
Filing date: 2003-05-20
Publication date: 2004-12-09
Anticipated expiration: 2023-05-20
Also published as: JP4333217B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protecting material and a protecting clothing having superior protecting performance against a sharp cutter such as an icepick or a cleaver and superior flexibility and wearability. <P>SOLUTION: The protecting material has a laminated structure with highly strong fabrics laminated. Each of fibers constituting the highly strong fabrics has a single yarn strength of 20cN/dtex or more and a single yarn elongation of 5% or less. The laminated structure has at least two type highly strong fabrics which are satisfied with the following requirements: 110≤D<SB>A</SB>≤5500.05≤D<SB>A</SB>/D<SB>B</SB>≤0.5, where D<SB>A</SB>is the fineness (dtex) of the fabric A and D<SB>B</SB>is the fineness (dtex) of the fabric B. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、防護材に関するものであり、さらに詳しくは刃物等に対して優れた防護性能を有する防護材および防護衣に関するものである。
【０００２】
【従来の技術】
従来、防護衣としては、アイスピック、バタフライナイフ、出刃包丁のような鋭利な刃物から身を護るためには、鉄板、ステンレス板、チタン板などの金属板、ポリカーボネート樹脂、ナイロン樹脂などの特殊樹脂板、および高強力繊維を用いた布帛から構成された防刃衣が提案されている。例えば、小片の金属板あるいは特殊樹脂板を組み合わせた構造のものを制服の一部に用いた防刃服が開示されている（例えば、特許文献１参照。）。しかしながら、金属板や樹脂板を用いたものは、防刃性は認められるが、柔軟性、着用性の面に問題があった。また、高張力金属細線と高張力合成繊維を組み合わせて製織した防護衣（例えば、特許文献２参照。）、高強度・高弾性繊維織物と不織布層を設けた防護具（例えば、特許文献３参照。）が提案されている。これらについては、柔軟性の面ではかなりの向上が認められるが、防刃性、特に鋭利な刃物に対する耐突き刺し性や耐切創性が十分でないのが実状である。
【０００３】
【特許文献１】特開昭６４−４６５９４号公報
【０００４】
【特許文献２】特開平０５−０９９５９６号公報
【０００５】
【特許文献３】特開平０６−１２８４２１号公報
【０００６】
【発明が解決しようとする課題】
本発明の目的は、かかる従来技術の欠点に鑑み、アイスピックや出刃包丁のような鋭利な刃物に対し優れた防護性能を有するとともに、柔軟性および着用性にも優れた防護材および防護衣を提供せんとするものである。
【０００７】
【課題を解決するための手段】
本発明は、上記目的を達成するために、次のような構成を有する。すなわち、本発明の防護材は、高強力織物を積層してなる積層構造物を有する防護材であって、高強力織物を構成する繊維は、単糸強度が２０ｃＮ／ｄｔｅｘ以上、単糸伸度が５％以下であり、かつ、積層構造物は、下記要件を同時に満足する少なくとも２種の高強力織物を有していることを特徴とする。
【０００８】
１１０≦Ｄ_Ａ≦５５０
０．０５≦Ｄ_Ａ／Ｄ_Ｂ≦０．５
Ｄ_Ａ：織物Ａの繊度（ｄｔｅｘ）
Ｄ_Ｂ：織物Ｂの繊度（ｄｔｅｘ）
【０００９】
【発明の実施の形態】
本発明における高強力織物とは、芳香族ポリアミド繊維、芳香族ポリエステル繊維、高分子量ポリエチレン繊維、ポリパラフェニレンベンゾビスオキサゾール繊維、高強度ポリビニールアルコール繊維などから構成された織物を挙げることができる。織組織としては、薄さ、目ずれ等の面で平織組織が好ましく用いられる。また、これらの中でも刃物に対する防護性、耐熱性の面からパラ系芳香族ポリアミド繊維からなる織物が好ましく用いられる。パラ系芳香族ポリアミド繊維としては、モノマーとしてパラフェニレンジアミンとテレフタル酸ジクロライド、ジアミノジフェニルエーテルなどを用いて重合し、紡糸形成した繊維であり、例えばポリパラフェニレンテレフタルアミドからなる繊維、コポリパラフェニレン３，４−ジフェニレンエーテルテレフタルアミド繊維がある。
【００１０】
かかる高強力織物を構成する繊維の単糸強度は２０ｃＮ／ｄｔｅｘ以上、単糸伸度は５％以下であり、単糸強度が２０ｃＮ／ｄｔｅｘ未満であると刃物等に対する防護性が低下し、また伸度が５％を超えると、外力により目ずれが生じて間隙部が出現しやすくなり防護性、特に耐突き刺し性が損なわれる。とくに、伸度は２〜４％の範囲内にあるものが好ましく用いられる。単糸強度は、大きいほど好ましいが、４０ｃＮ／ｄｔｅｘ以下程度であるものが実用的に使用することができる。
【００１１】
また、本発明は、繊度の異なった高強力織物からなる積層構造物であって、少なくとも２種の織物の繊度が下記要件を同時に満足する必要がある。ここで言う繊度とは、織物を構成する繊維の総繊度を意味する。
【００１２】
１１０≦Ｄ_Ａ≦５５０
０．０５≦Ｄ_Ａ／Ｄ_Ｂ≦０．５
Ｄ_Ａ：織物Ａの繊度（ｄｔｅｘ）
Ｄ_Ｂ：織物Ｂの繊度（ｄｔｅｘ）
すなわち、一種の織物Ａの繊度（Ｄ_Ａ）は、１１０≦Ｄ_Ａ≦５５０の範囲内にあることが必要である。この範囲内の繊度を有する織物は、糸条間の緻密性に優れ、また織交点部の目合い部が小さく、防護性、特に耐突き刺し性に優れる。一方、１１０ｄｔｅｘ未満では、糸条間の緻密性は優れるが、強力が不足し、防護性に劣り、また５５０を超えると糸条間の緻密性が劣り、また織交点部の目合い部が大きくなり、防護性、特に耐突き刺し性に劣り好ましくない。
【００１３】
また、他の織物Ｂの繊度（Ｄ_Ｂ）は、織物Ａの繊度（Ｄ_Ａ）と次の関係にある。つまり、２種の織物の繊度の比率（Ｄ_Ａ／Ｄ_Ｂ）は、０．０５≦Ｄ_Ａ／Ｄ_Ｂ≦０．５の範囲内であることが必要である。０．０５未満でも、０．５を超えても本発明の効果は得られない。繊度の比率（Ｄ_Ａ／Ｄ_Ｂ）が、０．０５未満の積層構造物からなる防護材は、耐突き刺し性が劣り、０．５を超える防護材は、刃物に対する切創性が劣り、これらの繊度比率の積層構造物からなる防護材は、耐突き刺し性および耐切創性の防護特性を同時に満足したものは得られない。織物Ｂとしては、刃物に対する耐切創性の面から繊度が８８０〜３３００ｄｔｅｘの範囲内の織物であることが好ましい。
【００１４】
さらに、織物の緻密度を表わすカバーファクターが、１８００〜２４００の範囲内にあることが防護性に優れる。また、織物の経糸と緯糸の繊度差は、１０％以下であることが耐突き刺し性、耐切創性の面から好ましい。
なお、カバーファクターは、次のように求められる。
【００１５】
カバーファクター（ＣＦ）＝Ｄ_１ ^１／２×Ｎ_１＋Ｄ_２ ^１／２×Ｎ_２
Ｄ_１，Ｄ_２：経糸および緯糸の総繊度（ｄｔｅｘ）
Ｎ_１，Ｎ_２：経糸および緯糸の織密度（本／２．５４ｃｍ）
１８００未満では、織交点部の目合いが大きくる傾向があり、あまり好ましくない。また、２４００を超えるように必要以上に大きくなると製織性に劣り、安定した品位のものが得らず、また織物の風合いが硬化する傾向があり好ましくない。
【００１６】
また、かかる織物の積層方法、すなわち積層順、積層交叉角、積層比率および積層枚数などは、特に制約する必要はないが、繊度（Ｄ_Ａ）が１１０≦Ｄ_Ａ≦５５０の範囲内にある織物が、積層構造物の重量に対して、３０％以上積層されていること、繊度（Ｄ_Ａ）を有する織物が、防護材の表面側、すなわち、刃物に接触する側に積層されていること、また複数枚の積層において、それぞれを４５度ずらして積層することが、より優れた防護性を発揮する。通常、織物は１０〜５０枚積層され、防護材の厚さは、５〜２０ｍｍの範囲内が、防護性、柔軟性および着用性の面から好ましい。また、必要に応じて、柔軟性、着用性を阻害しない程度に、アルミニウム、チタン、ステンレスなどの金属および熱硬化性樹脂や熱可塑性樹脂から構成されるプラスチック等の材料も併用することもできる。例えば、金属の場合は微孔を有する薄板、または金属細線を挿入した金属含有織物を積層して用いることもできる。
【００１７】
また、かかる防護材は発泡構造体、スポンジ、ゴムなどの緩衝材からなるシートと適宜併用してもよい。
【００１８】
一方、本発明の防護衣は、かかる防護材を少なくとも前身頃部に取り付けられた防護衣であって、取り付け構造としては、防護材を袋状を有する布帛に挿入する構造、２枚の布帛間に狭持する構造、または脱着自在の構造など適宜採用することができる。布帛は軽量および通気性の面等からメッシュ状構造のものが好ましい。また、必要に応じ、面ファスナー、ファスナー、ストラップ等も適宜使用することもできる。
【００１９】
かかる防護衣としては、チョッキおよび上衣、ズボン類などが挙げられる。
【００２０】
次に本発明の防護材および防護衣を図面により説明する。図１は本発明の防護材の構成の一例を示す概略図であり、縫糸１で縫合された細繊度を有する織物２（織物Ａ）を２５枚、太繊度を有する織物３（織物Ｂ）を１０枚積層してなる防護材４（図１では積層枚数は省略）である。また、図２は防護材４を前身頃形状に裁断し、ナイロンタフタで包み縫いをした前部用防護材５である。また、図３は防護衣を構成するメッシュ状布帛からなる前身頃部６を内側から示す概略図であり、防護材を挿入するため袋状物を、縫糸１と面ファスナー７で構成したものであり、図４は本発明の防護材を挿入した防護衣８の全体を示す概略図である。
【００２１】
【実施例】
次に実施例により、本発明をさらに詳しく説明する。
【００２２】
なお、実施例中における防護特性は、刃物としてアイスピックおよび出刃包丁を用い、下記方法により評価した。
（１）単糸強度および単糸伸度
ＪＩＳＬ１０１３の８．５．１法に基づき、単糸の引張強さおよび伸び率を求めた。
（２）貫通抵抗
オートグラフ（島津製作所製）を用い、上部ロードセル部に刃物を取り付け、下方のスリットを有する鋼板上に試料を設置し、１０ｍｍ／ｍｉｎで刃物を押し下げた時の貫通する最大応力を測定した。
（３）落下衝撃試験機（大栄科学精機製）を用い、落下治具に刃物を取り付け、下方に油粘土を敷き、その上に試料を設置し、仕事量が２０ジュールとなるように荷重と高さを調整し、自然落下させた時の刃物の貫通長さを測定した。
【００２３】
実施例１
原糸強力２４．４ｃＮ／ｄｔｅｘ、伸度３．１％のパラ系芳香族ポリアミド（ポリパラフェニレンテレフタルアミド）［東レデュポン製］繊維を用い、繊度２２２ｄｔｅｘ、経密度および緯密度が共に７０本／２．５４ｃｍの平織物（カバーファクター：２０８６）を製織し、精練、乾燥したものを織物Ａとした。一方、同パラ系芳香族ポリアミド繊維を用い、繊度１１１１ｄｔｅｘ、経密度および緯密度が共に３１本／２．５４ｃｍの平織物（カバーファクター：２０６５）を製織し、精練、乾燥したものを織物Ｂとした。しかる後、それぞれの平織物を複数枚に重ね、０．１ｍ^２の前身頃形状に縦刃裁断機で裁断した。次いで、織物Ａを２５枚積層、織物Ｂを１０枚積層し、ミシンにて周縁を縫合し、一体化した。織物Ａを表面側に出現させるように配列した織物積層構造物からなる防護材を２ｍｍ角の目合い（空隙部間隔）を有するナイロンメッシュ地で包み込み前身頃を縫製し、後身頃はメッシュ地のみで縫製し、前身頃と後身頃を合わせて防護チョッキを作製した。
【００２４】
このようにして得られた防護材および防護チョッキを評価し、表１に示した。表１からも判るように、実施例１の防護材は、アイスピック、出刃包丁に対する防護性に優れ、また防護チョッキは、着用性、運動性に優れていた。
【００２５】
比較例１〜４
原糸強力２４．４ｃＮ／ｄｔｅｘ、伸度６．０％のパラ系芳香族ポリアミド繊維を用いた他は、実施例１と同様に２種類の織物を作製し、防護材および防護チョッキを作製した［比較例１］。
【００２６】
一方、原糸強力１５．８ｃＮ／ｄｔｅｘ、伸度３．０％のパラ系芳香族ポリアミド繊維を用いた他は、実施例１と同様に２種類の織物を作製し、防護材および防護チョッキを作製した。［比較例２］。
【００２７】
また、実施例１と同一の平織物をそれぞれ単独に用い、織物Ａを４６枚積層した防護材を用いた防護チョッキを比較例３、織物Ｂを２２枚積層した防護材を用いた防護チョッキを比較例４とした。
【００２８】
このようにして得られた防護材および防護チョッキを実施例１と同様に評価し、表１に示した。表１からも判るように、比較例１，４の防護材は、アイスピックに対する防護性がやや劣り、比較例２，３の防護材は、出刃包丁に対する防護性が十分でなかった。
【００２９】
実施例２
原糸強力２５．２ｃＮ／ｄｔｅｘ、伸度２．８％のパラ系芳香族ポリアミド（ポリパラフェニレンテレフタルアミド）［東レデュポン製］繊維を用い、繊度４４４ｄｔｅｘ、経密度および緯密度が共に４８本／２．５４ｃｍの平織物（カバーファクター：２０２３）を製織し、精練、乾燥したものを織物Ａとした。一方、同パラ系芳香族ポリアミド繊維を用い、繊度３３３３ｄｔｅｘ、経密度および緯密度が共に１７本／２．５４ｃｍの平織物（カバーファクター：１９６２）を製織し、精練、乾燥したものを織物Ｂとした。しかる後、それぞれの平織物を複数枚に重ね、０．１ｍ^２の前身頃形状に縦刃裁断機で裁断した。次いで、織物Ａを２７枚積層、織物Ｂを７枚積層し、ミシンにて周縁を縫合し、一体化した。一方、目付が１５５ｇ／ｍ^２のポリエステル織物からなる面ファスナーを備えた袋構造を有する前身頃を縫製し、その中に織物Ａを表面側に出現させるように配列した織物積層構造物からなる防護材を挿入し、後身頃は織物のみで縫製し、前身頃と後身頃を合わせて防護衣を作製した。
【００３０】
このようにして得られた防護材および防護衣を評価し、表１に示した。
表１からも判るように、実施例２の防護材は、アイスピック、出刃包丁に対する防護性に優れ、また防護衣は、着用性、運動性に優れていた。
【００３１】
比較例５
実施例２と同一のパラ系芳香族ポリアミド繊維を用い、繊度１１１１ｄｔｅｘ、経密度および緯密度が共に３１本／２．５４ｃｍの平織物（カバーファクター：２０６５）を製織し、精練、乾燥したものを織物Ａとした。一方、同パラ系芳香族ポリアミド繊維を用い、繊度３３３３ｄｔｅｘ、経密度および緯密度が共に１７本／２．５４ｃｍの平織物（カバーファクター：１９６２）を製織し、精練、乾燥したものを織物Ｂとした。しかる後、それぞれの平織物を複数枚に重ね、０．１ｍ^２の前身頃形状に縦刃裁断機で裁断した。次いで、前者平織物を１２枚積層、後者平織物を７枚積層し、ミシンにて周縁を縫合し、一体化した後は、実施例２と同様に構成して、防護衣を作製した。
【００３２】
比較例６
厚さ２．５ｍｍのアルミ合金板を前身頃形状になるように４分割に打ち抜いた防護材を用い、実施例２と同様に防護衣を作製した。
【００３３】
比較例５および６で得られた防護材および防護衣を実施例１と同様に評価し、表１に示した。表１からも判るように、比較例５の防護材は、アイスピックに対する防護性が劣り、比較例６の防護衣は、着用性に問題があった。
【００３４】
実施例３
実施例２と同一の２種の平織物（織物Ａ、織物Ｂ）を前身頃形状に裁断した。次いで、織物Ａを２０枚と織物Ｂを１０枚積層する際に、織物Ａ２枚に対し、織物Ｂが１枚積層された構造になるように逐次積層する。積層後、ミシンにて周縁を縫合一体化し、防護材とした（６７９ｇｒ）。一方、実施例２と同一のポリエステル織物からなる面ファスナーを備えた袋構造を有する前身頃を縫製し、その中に、得られた防護材を織物Ａを表面側に出現させるように挿入し、後身頃は織物のみで縫製し、前身頃と後身頃を合わせて防護衣を作製した。
【００３５】
このようにして得られた防護材および防護衣を評価し、表１に示した。
表１からも判るように、実施例３の防護材は、アイスピック、出刃包丁に対する防護性に優れ、また防護衣は、着用性、運動性に優れていた。
【００３６】
【表１】

【００３７】
【発明の効果】
本発明によれば、優れた耐突き刺し性および耐切創性を有すると共に、防護材が柔軟であるため、運動性、着用性に優れた防護衣を提供することができる。また、防護材が脱着自在の構造であるため、洗濯が容易である。
【図面の簡単な説明】
【図１】本発明の防護材の構成の一例を示す概略図である。
【図２】本発明の防護材を前身頃形状に裁断し、ナイロンタフタで包み縫いをした前部用防護材の概略図である。
【図３】本発明の防護衣を構成するメッシュ状布帛からなる前身頃部６を内側から示す概略図であり、防護材を挿入するため袋状物を、縫糸と面ファスナーで構成したものである。
【図４】本発明の防護衣の全体概略図である。
【符号の説明】
１縫糸
２太繊度からなる織物
３細繊度からなる織物
４防護材
５前身頃形状の防護材
６メッシュ状布帛
７面ファスナー
８防護衣[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a protective material, and more particularly, to a protective material and a protective garment having excellent protection performance against a blade or the like.
[0002]
[Prior art]
Conventionally, as protective clothing, to protect yourself from sharp blades such as ice picks, butterfly knives, and knife blades, metal plates such as iron plates, stainless steel plates, and titanium plates, and special resins such as polycarbonate resins and nylon resins A blade-proof garment composed of a board and a fabric using high-strength fiber has been proposed. For example, a blade-proof garment using a combination of a small piece of a metal plate or a special resin plate as a part of a uniform is disclosed (for example, see Patent Document 1). However, those using a metal plate or a resin plate have a problem in terms of flexibility and wearability, although the blade-proof property is recognized. In addition, a protective garment woven by combining a high-tensile metal wire and a high-tensile synthetic fiber (for example, see Patent Document 2), a protective device provided with a high-strength, high-elastic fiber woven fabric and a nonwoven fabric layer (for example, see Patent Document 3) .) Has been proposed. Regarding these, although a considerable improvement is observed in terms of flexibility, the actual condition is that the blade-proofing property, particularly the piercing resistance and the cut resistance against sharp blades, is not sufficient.
[0003]
[Patent Document 1] JP-A-64-46594
[Patent Document 2] Japanese Patent Application Laid-Open No. 05-099596
[Patent Document 3] Japanese Patent Application Laid-Open No. 06-128421
[Problems to be solved by the invention]
An object of the present invention is to provide a protective material and a protective garment which have excellent protection performance against sharp blades such as an ice pick and a blade knife, and also have excellent flexibility and wearability in view of the drawbacks of the conventional technology. It will not be provided.
[0007]
[Means for Solving the Problems]
The present invention has the following configuration to achieve the above object. That is, the protective material of the present invention is a protective material having a laminated structure formed by laminating high-strength woven fabrics. The fibers constituting the high-strength woven fabric have a single yarn strength of 20 cN / dtex or more, and a single yarn elongation. Is not more than 5%, and the laminated structure has at least two kinds of high-strength woven fabrics that simultaneously satisfy the following requirements.
[0008]
110 ≦ _{D A} ≦ 550
_{_{0.05 ≦ D A / D B ≦}} 0.5
D _A : Fineness of fabric A (dtex)
D _B: fineness of the fabric B (dtex)
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
The high-strength woven fabric in the present invention includes a woven fabric composed of an aromatic polyamide fiber, an aromatic polyester fiber, a high-molecular-weight polyethylene fiber, a polyparaphenylenebenzobisoxazole fiber, a high-strength polyvinyl alcohol fiber and the like. As the woven structure, a plain woven structure is preferably used in terms of thinness, misalignment and the like. Among them, a woven fabric made of para-aromatic polyamide fibers is preferably used from the viewpoint of protection against blades and heat resistance. The para-based aromatic polyamide fiber is a fiber formed by polymerizing using para-phenylenediamine and terephthalic acid dichloride and diaminodiphenyl ether as monomers, and forming a spun fiber.For example, a fiber made of polyparaphenylene terephthalamide, copolyparaphenylene 3, There are 4-diphenylene ether terephthalamide fibers.
[0010]
The fibers constituting such a high-strength woven fabric have a single yarn strength of 20 cN / dtex or more and a single yarn elongation of 5% or less. If the single yarn strength is less than 20 cN / dtex, the protection against a blade or the like decreases, and If the elongation exceeds 5%, misalignment occurs due to an external force, and a gap portion is likely to appear, thereby deteriorating the protection, particularly the piercing resistance. In particular, those having an elongation in the range of 2 to 4% are preferably used. The single yarn strength is preferably as high as possible, but a single yarn strength of about 40 cN / dtex or less can be practically used.
[0011]
Further, the present invention is a laminated structure composed of high-strength woven fabrics having different finenesses, and the fineness of at least two kinds of woven fabrics must simultaneously satisfy the following requirements. The fineness here means the total fineness of the fibers constituting the woven fabric.
[0012]
110 ≦ _{D A} ≦ 550
_{_{0.05 ≦ D A / D B ≦}} 0.5
D _A : Fineness of fabric A (dtex)
D _B: fineness of the fabric B (dtex)
That is, it is necessary that the fineness (D _A ) of the kind of the woven fabric A is in a range of 110 ≦ D _A ≦ 550. A woven fabric having a fineness in this range has excellent denseness between the yarns, a small mesh portion at the intersection of the woven fabrics, and has excellent protective properties, particularly excellent piercing resistance. On the other hand, if it is less than 110 dtex, the denseness between the yarns is excellent, but the strength is insufficient, and the protective property is inferior. If it exceeds 550, the denseness between the yarns is inferior, and the mesh portion at the weave intersection is large. It is not preferable because the protective property, especially the piercing resistance is inferior.
[0013]
The fineness (D _B ) of the other woven fabric B has the following relationship with the fineness (D _A ) of the woven fabric A. That is, the ratio of the fineness of the two fabrics _{_(D} A / D _B) is required to be in the range of _{_{0.05 ≦ D A / D B ≦}} 0.5. Even if it is less than 0.05 or more than 0.5, the effect of the present invention cannot be obtained. Fineness ratio of _(D A _/ D _B) is, the protective material comprising a laminate structure of less than 0.05, the penetration resistance is inferior, armor greater than 0.5, the poor incision against blade, these A protective material comprising a laminated structure having a fineness ratio of 1 cannot satisfy the piercing resistance and cut wound resistance protective properties at the same time. The woven fabric B is preferably a woven fabric having a fineness in the range of 880 to 3300 dtex from the viewpoint of cut resistance to the blade.
[0014]
Further, when the cover factor indicating the denseness of the woven fabric is in the range of 1800 to 2400, the protection is excellent. Further, the difference in fineness between the warp and the weft of the woven fabric is preferably 10% or less from the viewpoint of piercing resistance and cut resistance.
Note that the cover factor is obtained as follows.
[0015]
Cover factor (CF) = D ₁ ^1/2 × N ₁ + D ₂ ^1/2 × N ₂
D ₁ , D ₂ : total fineness of warp and weft (dtex)
_N _1, N _2: Woven warp and weft density (the per 2.54 cm)
If it is less than 1800, the texture at the weaving intersection tends to be large, which is not preferred. On the other hand, if it is larger than 2400, the weaving property is inferior, stable quality cannot be obtained, and the texture of the fabric tends to harden, which is not preferable.
[0016]
The method of laminating the fabrics, that is, the lamination order, the crossing angle, the lamination ratio, and the number of laminations need not be particularly limited, but the fabric having a fineness (D _A ) in the range of 110 ≦ D _A ≦ 550 is required. Is laminated on the surface of the protective material, that is, on the side in contact with the blade, that the woven fabric having a fineness (D _A ) is laminated by 30% or more based on the weight of the laminated structure; In addition, in a case where a plurality of sheets are stacked, each of them is shifted at an angle of 45 degrees, thereby exhibiting better protection. Usually, 10 to 50 woven fabrics are laminated, and the thickness of the protective material is preferably in the range of 5 to 20 mm from the viewpoint of protective properties, flexibility and wearability. If necessary, a metal such as aluminum, titanium, and stainless steel, and a material such as a plastic made of a thermosetting resin or a thermoplastic resin can also be used together as long as the flexibility and wearability are not impaired. For example, in the case of metal, a thin plate having fine holes or a metal-containing woven fabric into which a thin metal wire is inserted can be used.
[0017]
Further, such a protective material may be appropriately used in combination with a sheet made of a cushioning material such as a foamed structure, a sponge, and rubber.
[0018]
On the other hand, the protective garment of the present invention is a protective garment in which such a protective material is attached to at least a front body portion, and has a structure in which the protective material is inserted into a bag-shaped cloth, between two cloths. Or a structure that can be freely attached and detached. The cloth preferably has a mesh-like structure from the viewpoint of light weight and air permeability. Further, if necessary, a hook-and-loop fastener, a fastener, a strap, and the like can be appropriately used.
[0019]
Examples of such protective clothing include waistcoats and upper garments, pants and the like.
[0020]
Next, the protective material and protective clothing of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing an example of the configuration of the protective material of the present invention, in which 25 woven fabrics 2 (woven fabrics A) sewn with sewing threads 1 and 25 woven fabrics 3 (woven fabric B) having large fineness are sewn. The protective material 4 is formed by laminating 10 sheets (the number of layers is omitted in FIG. 1). FIG. 2 shows a front protective material 5 in which the protective material 4 is cut into a front body shape and wrapped and sewn with nylon taffeta. FIG. 3 is a schematic diagram showing from the inside a front body portion 6 made of a mesh-like fabric constituting a protective garment, in which a bag-like material for inserting a protective material is composed of a sewing thread 1 and a hook-and-loop fastener 7. FIG. 4 is a schematic view showing the entire protective garment 8 into which the protective material of the present invention is inserted.
[0021]
【Example】
Next, the present invention will be described in more detail with reference to examples.
[0022]
The protective properties in the examples were evaluated by the following method using an ice pick and a blade knife as a knife.
(1) Single yarn strength and single yarn elongation Tensile strength and elongation of a single yarn were determined based on the 8.5.1 method of JIS L1013.
(2) Using a penetration resistance autograph (manufactured by Shimadzu Corporation), attach a knife to the upper load cell part, place the sample on a steel plate with a lower slit, and push down the knife at 10 mm / min. Was measured.
(3) Using a drop impact tester (manufactured by Daiei Kagaku Seiki Co., Ltd.), attach a knife to the drop jig, spread oil clay underneath, place the sample on it, and set the load so that the work amount becomes 20 joules. The height was adjusted, and the penetration length of the blade when dropped naturally was measured.
[0023]
Example 1
Using a para-aromatic polyamide (polyparaphenylene terephthalamide) [manufactured by Toray DuPont] fiber having a yarn strength of 24.4 cN / dtex and an elongation of 3.1%, a fineness of 222 dtex, a density of 70 and a density of weft of 70 / A plain fabric (cover factor: 2086) of 2.54 cm was woven, scoured and dried to obtain a fabric A. On the other hand, a plain woven fabric (cover factor: 2065) having the fineness of 1111 dtex, both of the warp density and the weft density of 31 yarns / 2.54 cm was woven using the same para-aromatic polyamide fiber, and the woven fabric was refined and dried to obtain a woven fabric B. did. Thereafter, each plain fabric was stacked on a plurality of sheets, and cut into a front body shape of 0.1 m ^{2 by} a vertical blade cutting machine. Next, 25 woven fabrics A and 10 woven fabrics B were laminated, and the periphery was sewn with a sewing machine to be integrated. A protective material consisting of a woven fabric laminated structure arranged so that the woven fabric A appears on the surface side is wrapped in a nylon mesh fabric having a 2 mm square mesh (a space between gaps), and the front body is sewn. And a protective vest was made by combining the front and back bodies.
[0024]
The protective material and protective vest thus obtained were evaluated and are shown in Table 1. As can be seen from Table 1, the protective material of Example 1 was excellent in protection against ice picks and knife blades, and the protective vest was excellent in wearability and mobility.
[0025]
Comparative Examples 1-4
Except for using a para-aromatic polyamide fiber having a raw yarn strength of 24.4 cN / dtex and an elongation of 6.0%, two types of fabrics were produced in the same manner as in Example 1 to produce a protective material and a protective vest. [Comparative Example 1].
[0026]
On the other hand, except for using para-aromatic polyamide fiber having a yarn strength of 15.8 cN / dtex and an elongation of 3.0%, two types of woven fabrics were prepared in the same manner as in Example 1, and a protective material and a protective vest were used. Produced. [Comparative Example 2].
[0027]
Further, a protective vest using a protective material obtained by laminating 46 woven fabrics A was used in Comparative Example 3 and a protective vest using a protective material obtained by laminating 22 woven fabrics B was used alone using the same plain woven fabric as in Example 1. Comparative Example 4 was set.
[0028]
The protective material and protective vest thus obtained were evaluated in the same manner as in Example 1, and are shown in Table 1. As can be seen from Table 1, the protective materials of Comparative Examples 1 and 4 were slightly inferior to the ice pick, and the protective materials of Comparative Examples 2 and 3 were not sufficiently protective against the blade knife.
[0029]
Example 2
Using a para-aromatic polyamide (polyparaphenylene terephthalamide) [manufactured by Toray DuPont] fibers having a fiber strength of 25.2 cN / dtex and an elongation of 2.8%, a fineness of 444 dtex, a density of 48 and a density of weft are 48 / A 2.54 cm plain woven fabric (cover factor: 2023) was woven, scoured and dried to obtain a woven fabric A. On the other hand, a plain woven fabric (cover factor: 1962) having the same fineness of 3333 dtex, both of a warp density and a weft density of 17 yarns / 2.54 cm using the same para-aromatic polyamide fiber was woven, refined and dried to obtain a woven fabric B. did. Thereafter, each plain fabric was stacked on a plurality of sheets, and cut into a front body shape of 0.1 m ^{2 by} a vertical blade cutting machine. Next, 27 woven fabrics A and 7 woven fabrics B were stacked, and the periphery was sewn with a sewing machine to be integrated. On the other hand, a front body having a bag structure provided with a hook-and-loop fastener made of a polyester fabric having a basis weight of 155 g / m ² is sewn, and a protective fabric comprising a fabric laminated structure arranged so that the fabric A appears on the surface side is sewn therein. The material was inserted, the back body was sewn with only fabric, and the front body and the back body were combined to make protective clothing.
[0030]
The protective material and protective clothing thus obtained were evaluated and are shown in Table 1.
As can be seen from Table 1, the protective material of Example 2 was excellent in protection against ice picks and knife blades, and the protective clothing was excellent in wearability and mobility.
[0031]
Comparative Example 5
Using the same para-aromatic polyamide fiber as in Example 2, weaving a plain woven fabric (cover factor: 2065) having a fineness of 1111 dtex, a warp density and a weft density of 31 / 2.54 cm, and scouring and drying Fabric A was used. On the other hand, a plain woven fabric (cover factor: 1962) having the same fineness of 3333 dtex, both of a warp density and a weft density of 17 yarns / 2.54 cm using the same para-aromatic polyamide fiber was woven, refined and dried to obtain a woven fabric B. did. Thereafter, each plain fabric was stacked on a plurality of sheets, and cut into a front body shape of 0.1 m ^{2 by} a vertical blade cutting machine. Next, 12 sheets of the former plain fabric and 7 sheets of the latter plain fabric were laminated, and the periphery was sewn together with a sewing machine. After integration, a protective garment was produced in the same manner as in Example 2.
[0032]
Comparative Example 6
A protective garment was produced in the same manner as in Example 2 using a protective material obtained by punching a 2.5 mm-thick aluminum alloy plate into four parts so as to have a front body shape.
[0033]
The protective materials and protective clothing obtained in Comparative Examples 5 and 6 were evaluated in the same manner as in Example 1, and are shown in Table 1. As can be seen from Table 1, the protective material of Comparative Example 5 was inferior in protection against ice picks, and the protective clothing of Comparative Example 6 had a problem in wearability.
[0034]
Example 3
The same two types of plain woven fabric (woven fabric A and woven fabric B) as in Example 2 were cut into a front body shape. Next, when 20 woven fabrics A and 10 woven fabrics B are stacked, two woven fabrics A are sequentially stacked so that one woven fabric B is stacked. After lamination, the periphery was sewn and integrated with a sewing machine to provide a protective material (679 gr). On the other hand, a front body having a bag structure provided with a hook-and-loop fastener made of the same polyester fabric as in Example 2 was sewn, and the obtained protective material was inserted into the body so that the fabric A appeared on the surface side, The back body was sewn with only fabric, and the front and back bodies were combined to make protective clothing.
[0035]
The protective material and protective clothing thus obtained were evaluated and are shown in Table 1.
As can be seen from Table 1, the protective material of Example 3 was excellent in protection against ice picks and knife blades, and the protective clothing was excellent in wearability and mobility.
[0036]
[Table 1]

[0037]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, since it has excellent piercing resistance and cut resistance, and the protective material is flexible, it is possible to provide a protective garment having excellent mobility and wearability. Further, since the protective material has a detachable structure, washing is easy.
[Brief description of the drawings]
FIG. 1 is a schematic view showing an example of the configuration of a protective material of the present invention.
FIG. 2 is a schematic view of a front protective material obtained by cutting the protective material of the present invention into a front body shape and wrapping and sewing it with nylon taffeta.
FIG. 3 is a schematic diagram showing, from the inside, a front body portion 6 made of a mesh-like cloth constituting a protective garment of the present invention, in which a bag-like material for inserting a protective material is constituted by sewing threads and a hook-and-loop fastener. is there.
FIG. 4 is an overall schematic diagram of the protective clothing of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Sewing thread 2 Woven cloth of fineness 3 Woven cloth of fineness 4 Protective material 5 Protective material of front body shape 6 Mesh cloth 7 Surface fastener 8 Protective clothing

Claims

A protective material having a laminated structure obtained by laminating high-strength woven fabrics, wherein the fibers constituting the high-strength woven fabric have a single yarn strength of 20 cN / dtex or more, a single yarn elongation of 5% or less, and A protective material characterized in that the laminated structure has at least two types of high-strength fabrics that simultaneously satisfy the following requirements.
110 ≦ _{D A} ≦ 550
_{_{0.05 ≦ D A / D B ≦}} 0.5
D _A : Fineness of fabric A (dtex)
D _B: fineness of the fabric B (dtex)

The protective material according to claim 1, wherein the cover factor of the high-strength fabric is in the range of 1800 to 2400.

Fabric with fineness D _A is, relative to the weight of the stacked structure are stacked more than 30%, protection material according to claim 1 or 2.

The protective material according to any one of claims 1 to 3, wherein the thickness of the laminated structure is 5 to 20 mm.

Fabric with fineness D _A is laminated to emerge on the surface side, protective material according to claim 1.

The protective material according to any one of claims 1 to 5, wherein the high-strength woven fabric is a plain woven fabric.

The protective material according to any one of claims 1 to 6, wherein the high-strength fabric is made of para-aromatic polyamide fiber.

A protective garment, wherein the protective material according to any one of claims 1 to 7 is attached to at least a front body portion.

The protective clothing according to claim 8, wherein the protective material is inserted and attached to the bag-like cloth.

The protective clothing according to claim 8 or 9, wherein the protective material is attached to the fabric in a detachable structure.

The protective clothing according to claim 9 or 10, wherein the fabric is a mesh-like material.