JP2005291542A - Protective screen body - Google Patents

Protective screen body Download PDF

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Publication number
JP2005291542A
JP2005291542A JP2004103508A JP2004103508A JP2005291542A JP 2005291542 A JP2005291542 A JP 2005291542A JP 2004103508 A JP2004103508 A JP 2004103508A JP 2004103508 A JP2004103508 A JP 2004103508A JP 2005291542 A JP2005291542 A JP 2005291542A
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dtex
strength
protective curtain
protective
fiber
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Shigeo Abiru
茂雄 阿比留
Kiyosuke Kamiyama
清佐 上山
Yukihiro Nomura
幸弘 野村
Masumi Yabuuchi
真澄 藪内
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Toyobo Co Ltd
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Toyobo Co Ltd
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  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Laminated Bodies (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a protective material having not only protective performance but also the flexibility of such a degree that can secure a folding or winding property, reduced in weight, compactly storable, easily and rapidly repaired and maintained if a repair material is prepared, and capable of providing both the protective performance and covenience for transportation and handling. <P>SOLUTION: This protective screen body is characterized in that both faces of a laminated body formed by laminating multiple layers of nonwoven fabrics formed of high strength and high elastic modulus fibers comprise bodies formed by laminating canvas. The high strength and high elastic modulus fiber has a tensile strength of 18 cN/dtex or higher and an initial tensile elastic modulus of 500 cN/dtex or higher. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、砲弾、榴弾、各種爆発物が炸裂した際に、その周囲に高速で飛散する破片等から、人命、車両、航空機、重要機器等を防護する機能を有し、敷設、撤収が迅速に行え、且つコンパクトに収納でき、軽易に輸送できる等の取り扱い上の利便性を兼備する防護幕体に関するものである。   The present invention has a function to protect human life, vehicles, aircraft, important equipment, etc. from the debris that scatters around at high speed when shells, grenades, and various explosives explode. It is related to a protective curtain body that is easy to handle, can be stored compactly, and can be easily transported.

高速で飛翔したり飛散する物体の直撃や落下から、人命、車両、航空機、重要機器等を防護するものとして、対人用には防弾チョッキ、防弾楯、防弾ヘルメット等の装具類があり、対物用には、車両、航空機、艦船等の外殻の一部を形成する装甲板等が広く知られている。これらの従来のものは、(イ)重く、嵩張る、(ロ)柔軟性に乏しい、(ハ)大面積を持つ製品の製造が困難である、(ニ)部分補修が困難である、などの問題点を有している。
ところで、天幕や航空機を一時的に収納するシェルター等においては、その内部に居る者が比較的無防備な状態である事が多いにも関わらず、外の状況を直接視認する事ができないため、有事を想定した場合の危険回避という観点から問題があった。
しかしながら、軽く嵩張らず、柔軟性があり、大面積の製品が製造でき、しかも部分補修ができるものであり、上記状態での使用に好適なものがないのが実状であった。
There are equipment such as bulletproof vests, bulletproof helmets, bulletproof helmets, etc. for personal use to protect human lives, vehicles, aircraft, important equipment, etc. from direct hits and falls of objects that fly or scatter at high speed. Is widely known as an armor plate that forms part of the outer shell of a vehicle, aircraft, ship, or the like. These conventional products are (i) heavy and bulky, (b) poor in flexibility, (c) difficult to manufacture products with large areas, and (d) difficult to repair partially. Has a point.
By the way, in shelters that temporarily store awnings and aircraft, there are many cases where the people inside are relatively unprotected, so it is not possible to see the outside situation directly. There was a problem from the viewpoint of avoiding danger when assuming
However, it is light and not bulky, flexible, capable of producing a large-area product, and can be partially repaired. In fact, there is nothing suitable for use in the above state.

また、防護材として、高強度繊維を用いた織編物のテント地などが知られているが(例えば特許文献1)、耐弾性能を高めるには数十枚もの非常に多数枚の布帛を積層しなければならないことや、積層枚数が多くなるために柔軟性が損われるなどの問題点があった。
特開平7−133547号公報
Further, tents of woven and knitted fabrics using high-strength fibers are known as protective materials (for example, Patent Document 1), but in order to improve the ballistic resistance, a very large number of dozens of fabrics are laminated. There is a problem that flexibility has been lost due to the increase in the number of stacked layers.
Japanese Patent Laid-Open No. 7-133547

本発明は、前述の実情に鑑み、一人の人力で運搬が可能な重量で、且つ、抱えられる程度のコンパクトさを有する事、適宜な折畳性、或いは巻取り性が確保される程度の柔軟性を有する事、一般的な天幕の一面(5m×2m)を1枚若しくは2枚でカバーできる形状寸法の製品である事、補修材料さえ常備しておけば軽易に応急的な補修整備ができる事、などが可能であり、防護性能と取り扱い上の利便性とを兼備する新しい防護材、即ち防護幕体を提供しようとするものである。   In view of the above-described circumstances, the present invention has a weight that can be transported by one person and is compact enough to be held, and is flexible enough to ensure proper folding or winding. It is a product with a shape and dimensions that can cover one or two general awnings (5m x 2m) with one or two sheets, and if repair materials are always available, it can be easily and quickly repaired. It is an object of the present invention to provide a new protective material, that is, a protective curtain body that has both protective performance and convenience in handling.

本発明者らは上記課題を解決するため、鋭意研究した結果、遂に本発明を完成するに到った。即ち本発明は、下記の構成からなる。
(1)高強度高弾性率繊維からなる不織布が複数層積層された積層体の両面に、帆布が積層されてなる本体を有することを特徴とする防護幕体。
(2)前記高強度高弾性率繊維が、引張強度が18cN/dtex以上、初期引張弾性率が500cN/dtex以上であることを特徴とする第1に記載の防護幕体。
(3)前記高強度高弾性率繊維の単糸繊度が11dtex以下であることを特徴とする第1又は2に記載の防護幕体。
(4)前記本体の外縁部に、鳩目孔等が設けられた幅25mm以上のテープ類が縫着されてなることを特徴とする第1〜3のいずれかに記載の防護幕体。
(5)前記不織布の厚みが1〜8mmであることを特徴とする第1〜4のいずれかに記載の防護幕体。
(6)前記不織布がニードルパンチ加工によって繊維が3次元交絡された構造を有することを特徴とする第1〜5のいずれかに記載の防護幕体。
(7)前記高強度高弾性率繊維が重量平均分子量が50万以上、極限粘度が5dl/g以上である超高分子量ポリエチレン繊維であることを特徴とする第1〜6のいずれかに記載の防護幕体。
As a result of intensive studies to solve the above problems, the present inventors have finally completed the present invention. That is, this invention consists of the following structures.
(1) A protective curtain having a main body in which canvases are laminated on both sides of a laminate in which a plurality of nonwoven fabrics made of high-strength and high-modulus fibers are laminated.
(2) The protective curtain according to the first aspect, wherein the high-strength and high-modulus fiber has a tensile strength of 18 cN / dtex or more and an initial tensile modulus of 500 cN / dtex or more.
(3) The protective curtain according to 1 or 2, wherein the high-strength and high-modulus fiber has a single yarn fineness of 11 dtex or less.
(4) The protective curtain body according to any one of the first to third aspects, wherein tapes having a width of 25 mm or more provided with eyelet holes or the like are sewn on the outer edge of the main body.
(5) The protective curtain according to any one of (1) to (4), wherein the nonwoven fabric has a thickness of 1 to 8 mm.
(6) The protective curtain according to any one of (1) to (5), wherein the nonwoven fabric has a structure in which fibers are three-dimensionally entangled by needle punching.
(7) The high-strength, high-modulus fiber is an ultrahigh molecular weight polyethylene fiber having a weight average molecular weight of 500,000 or more and an intrinsic viscosity of 5 dl / g or more. Protective curtain.

本発明の防護幕体は、一人の人力で運搬が可能な重量で、且つ、抱えられる程度のコンパクトさを有する事、適宜な折畳性、或いは巻取り性が確保される程度の柔軟性を有する事、一般的な天幕の一面(5m×2m)を1枚若しくは2枚でカバーできる形状寸法の製品である事、補修材料さえ常備しておけば軽易に応急的な補修整備ができる事、などが可能であり、防護性能と取り扱い上の利便性とを兼備する新しい防護材である。   The protective curtain of the present invention has a weight that can be transported by one person and is compact enough to be held, flexible enough to ensure proper folding or winding. It has a shape and dimension that can cover one side of a general awning (5m x 2m) with one or two sheets, and if repair materials are always available, it can be easily and quickly repaired. It is a new protective material that has both protective performance and convenience in handling.

以下、本発明を詳細に説明する。
本発明における高強度高弾性率繊維としては、全芳香族ポリアミド繊維(パラ・アラミド)、超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(PBO)、ポリパラフェニレンベンゾジアゾール繊維(PBT)、高強力ポリプロピレン、ポリ(フッ化)ビニリデン繊維(UHMw-PE)、高強力PVA繊維、全芳香族ポリエステル繊維などが挙げられ、これらの繊維は単独であっても混合して使用してもよい。
Hereinafter, the present invention will be described in detail.
The high-strength and high-modulus fiber in the present invention includes wholly aromatic polyamide fiber (para-aramid), ultrahigh molecular weight polyethylene fiber, polyparaphenylene benzobisoxazole fiber (PBO), polyparaphenylene benzodiazole fiber (PBT). , High-strength polypropylene, poly (fluorinated) vinylidene fibers (UHMw-PE), high-strength PVA fibers, wholly aromatic polyester fibers, and the like. These fibers may be used alone or in combination. .

これらの中では重量平均分子量が50万以上、極限粘度ηが5dl/g以上である超高分子量ポリエチレン繊維が最も好適である。
超高分子量ポリエチレン繊維は、比重が0.97で前記高強度高弾性率繊維の中では最も小さく、且つ引張強度等の力学的特性も卓越しているので、繊維の比表面積も他の繊維に比して大きく、特に単糸繊度を、11dtex以下、好ましくは5.5dtex以下となるように繊維化する事で、不織布において必要とされる絡合点の数を極大化する事ができ、布帛形態が不織布であっても結果的に繊維自身の持つ高い力学的な特性が高い効率で発現させる事が可能となるためである。
Among these, ultrahigh molecular weight polyethylene fibers having a weight average molecular weight of 500,000 or more and an intrinsic viscosity η of 5 dl / g or more are most preferable.
Ultra high molecular weight polyethylene fiber has a specific gravity of 0.97, which is the smallest among the high-strength and high-modulus fibers, and has excellent mechanical properties such as tensile strength. The number of entanglement points required in the nonwoven fabric can be maximized by making the fiber so that the single yarn fineness is 11 dtex or less, preferably 5.5 dtex or less. This is because even if the form is a non-woven fabric, the high mechanical properties of the fiber itself can be expressed with high efficiency.

本発明における高強度高弾性率繊維は、引張強度が18cN/dtex以上、好ましくは25cN/dtex以上であり、初期引張弾性率が500cN/dtex以上、好ましくは800cN/dtex以上である。さらには、切断伸度は8%以下が好ましく、より好ましくは5%以下である。
これは、高速で飛翔する物体を停める事、言い換えるならばその運動エネルギーをゼロ(無)にするために、面方向及び厚み方向に一定の範囲に亘って、繊維が効率よく切断し、且つ相互に絡合する繊維が高速飛翔体に引き抜かれる現象を発現させ、繊維の切断及び引き抜きに要するエネルギーと高速飛翔体の運動エネルギーを相殺させるためには、前述の繊維の力学的特性は一定値以上必要であるためである。また、引き抜かれた繊維が飛翔体に絡みついて、その大きさ(断面積)を増加させることにより、飛翔体の運動エネルギーが面方向及び厚み方向により広範囲に伝播することとなり、更に好都合である。これらの力学的特性が満足されない場合、相殺させるに相当するエネルギーを得るために必要とする繊維量(質量及び厚み)が膨大なものとなり、軽量で且つ柔軟な幕体を得ようとする本発明の目的を満足できないことは明白である。
The high strength and high modulus fiber in the present invention has a tensile strength of 18 cN / dtex or more, preferably 25 cN / dtex or more, and an initial tensile modulus of 500 cN / dtex or more, preferably 800 cN / dtex or more. Furthermore, the cut elongation is preferably 8% or less, more preferably 5% or less.
In order to stop an object flying at high speed, in other words, to make its kinetic energy zero (no), the fibers are efficiently cut over a certain range in the surface direction and the thickness direction, and mutual In order to express the phenomenon that the fiber entangled with the high-speed flying object is drawn, and to cancel the energy required for cutting and drawing the fiber and the kinetic energy of the high-speed flying object, the above-mentioned mechanical properties of the fiber are above a certain value. This is because it is necessary. Further, when the drawn fibers are entangled with the flying object and its size (cross-sectional area) is increased, the kinetic energy of the flying object is propagated over a wide range in the plane direction and the thickness direction, which is further advantageous. If these mechanical characteristics are not satisfied, the amount of fibers (mass and thickness) required to obtain energy equivalent to offsetting becomes enormous, and the present invention seeks to obtain a lightweight and flexible curtain. It is clear that the purpose of can not be satisfied.

本発明における不織布は、製造方法は特に規定するものではないが、繊維の持つ力学的特性に相応する程度に、強固に三次元交絡された構造を有する事が望ましい。例えば、捲縮加工を施した高強度高弾性率繊維ステープルをカード機に投入し、ウェブを作成した後、所定の目付けとなる様に積層(クロスレイヤー)し、次いでニードルパンチ機にてパンチング加工を実施して所定の目付の不織布を得る方法がある。   The non-woven fabric in the present invention is not particularly defined for the production method, but it is desirable that the non-woven fabric has a strongly three-dimensionally entangled structure corresponding to the mechanical properties of the fiber. For example, high-strength and high-modulus fiber staples that have been crimped are put into a card machine, a web is created, then laminated (cross-layer) so as to have a predetermined basis weight, and then punched with a needle punch machine There is a method for obtaining a non-woven fabric having a predetermined basis weight.

不織布(ウェブ)の積層枚数は、製品に求められる重量、及び対象脅威のレベルに応じて任意に選択されるものであるが、適宜な折畳性、或いは巻取り性が確保される程度の柔軟性を有するために、2枚以上、好ましくは5枚以上となるように積層することが好ましい。単層の場合は、厚みが増すにつれて柔軟性が阻害されてしまうことがあるためである。積層された不織布が層間で著しいズレや、特定箇所への皺等の発生を回避するために、任意の箇所を通し縫い等によって固定することが望ましいが、その手法及び箇所等については特に規定するものではない。   The number of laminated nonwoven fabrics (webs) is arbitrarily selected according to the weight required for the product and the level of the target threat, but is flexible enough to ensure proper folding or winding properties. In order to have the property, it is preferable to laminate so that there are two or more, preferably five or more. This is because in the case of a single layer, flexibility may be hindered as the thickness increases. In order to avoid the occurrence of significant misalignment between the laminated nonwoven fabrics and wrinkles at specific locations, it is desirable to fix any location by through stitching, etc., but the method and location are specified in particular. It is not a thing.

本発明の防護幕体は、不織布の表裏両面に帆布が積層された本体を有している。不織布はその構造上、空隙部を内在するため、実用上の耐久性及び、雨水等の侵入による著しい重量増を回避すると共に、美観の維持確保、天幕本体との調和等を考慮して防水帆布などでその表裏を覆う。   The protective curtain of the present invention has a main body in which canvas is laminated on both front and back surfaces of a nonwoven fabric. The non-woven fabric has a void in its structure, so it is practically durable and avoids a significant increase in weight due to the intrusion of rainwater, etc. Cover the front and back with etc.

本発明で積層する帆布は、実用上問題ないレベルの引張強度、引裂強度、防水性、耐水圧を有するものであれば、その素材、構造を特に規定するものではないが、例えばナイロン、ビニロン、ポリエステル及びそれらと綿との混紡糸などを用いたテント地、トラック幌材、シート材、ターポリンなどの市販の一般的素材を使用することができる。必要とする防護性能との兼ね合いによるが、用途、目的に応じて、できるだけ薄く軽量である事が好ましい。さらに、難燃性、耐熱性であることがより好ましい。   The canvas to be laminated in the present invention is not particularly specified for its material and structure as long as it has a level of tensile strength, tear strength, waterproofness, and water pressure that is not problematic in practice, but for example, nylon, vinylon, Commercially available general materials such as tents using polyester and blended yarns of them with cotton, truck hoods, sheet materials, tarpaulins and the like can be used. Although it depends on the protection performance required, it is preferable that it be as thin and light as possible depending on the application and purpose. Furthermore, it is more preferable that it is flame retardancy and heat resistance.

本発明の防護幕体は、高強度高弾性率繊維からなる不織布を多層枚数積層して適宜の部位を縫製し、その表裏を防水帆布等でカバーして構成された本体を有し、さらに、その外縁部に、鳩目孔等が設けられた幅25mm以上のテープ類が強固に縫着されてなる構造を有する事が特に好ましい。この時の不織布の厚みは1〜8mmで、且つ不織布の積層枚数が少なくとも2枚以上、好ましくは5枚以上である事が好ましい。   The protective curtain body of the present invention has a main body configured by laminating a plurality of non-woven fabrics made of high-strength and high-modulus fibers, sewing appropriate portions, and covering the front and back with waterproof canvas, etc. It is particularly preferable that the outer edge has a structure in which tapes having a width of 25 mm or more provided with eyelet holes or the like are firmly sewn. The thickness of the nonwoven fabric at this time is 1 to 8 mm, and the number of laminated nonwoven fabrics is preferably at least 2 or more, preferably 5 or more.

本発明の防護幕体は、具体的には天幕や航空機を一時的に収納するシェルター等の補強を行い、その内部に居る者及び物の防護を目的としているが、そのためには、例えば天幕の内側に吊り下げて展張する等の敷設方法が考えられる。このため防護幕体には天幕等に簡易に取付け出来る機能を付与することが好ましく、本発明においては防護幕体の外縁部に、鳩目孔を設けた幅25mm以上、好ましくは40mm以上の織テープを逢着し、当該鳩目孔を利用して、天幕の骨格に結束帯等を用いて簡便に固着できるようにすることが好ましい。この他にも、ベルクロ(マジックテープ)等を適宜の箇所に施したテープ類を当該外縁部に逢着し、ベルクロ等を活用して固着する方法もあるが、要は外縁部に逢着した織テープを、防護幕体本体を天幕骨格に固着する際に有効活用するものであり、その固着方法については特に規定するものではない。   Specifically, the protection curtain body of the present invention reinforces a tent or a shelter for temporarily storing an aircraft, and is intended to protect persons and objects inside it. A laying method such as hanging and expanding inside is conceivable. For this reason, it is preferable to provide the protective curtain body with a function that can be easily attached to a awning or the like. In the present invention, a woven tape having a width of 25 mm or more, preferably 40 mm or more, provided with an eyelet hole at the outer edge of the protective curtain body. It is preferable that the eyelet is attached to the awning skeleton using a cable tie or the like so that it can be easily fixed. In addition to this, there is a method of attaching velcro (magic tape) etc. to an appropriate place on the outer edge part and fixing it using velcro etc., but the woven tape attached to the outer edge part is important. Is effectively used when the protective curtain body is fixed to the awning skeleton, and the fixing method is not particularly specified.

次に実施例及び比較例を用いて、本発明を具体的に説明する。なお、実施例中における特性は、下記の方法により求めた。
1)耐弾性能(Vp50)
得られた試料に対して、質量1.1g、直径φ5.5mmの模擬破片弾(FSP:flagment simulated projectile)を任意の速度で発射し、試料の耐弾性能(Vp50:貫通/不貫通の出現確立が50%の弾速)を評価した。
2)耐弾性能(Specific Energy Absorption)
得られた試料に対して、質量1.1g、直径φ5.5mmの模擬破片弾(FSP:flagment simulated projectile)を試料を貫通するに十分な速度で発射し、試料前後のFSPの速度差から、試料が吸収したエネルギーを算出し、試料の重量当りに換算して比較した。当該値が大きい程、良好なる耐弾性能を示す。
3)柔軟性
5名のパネラーによる官能検査により、以下の3段階に評価した。
◎:非常に柔軟である、 ○:やや硬さがある、 ×:硬い。
4)折畳性
5名のパネラーによる官能検査により、以下の3段階に評価した。
◎:非常に折り畳みやすい、 ○:やや折り畳みにくい、 ×:折り畳みが困難。
Next, the present invention will be specifically described using examples and comparative examples. In addition, the characteristic in an Example was calculated | required with the following method.
1) Ballistic resistance (Vp50)
The specimen was fired at an arbitrary speed with an FSP (fragment simulated projectile) with a mass of 1.1 g and a diameter of 5.5 mm, and the specimen's ballistic performance (Vp50: establishment of penetration / non-penetration appearance) (50% velocity).
2) Specific energy absorption
For the obtained sample, a mass simulated projectile (FSP) with a mass of 1.1 g and a diameter of φ5.5 mm was fired at a speed sufficient to penetrate the sample. From the difference in velocity of the FSP before and after the sample, The energy absorbed by was calculated and compared per sample weight. The larger the value, the better the ballistic performance.
3) Flexibility The following three levels were evaluated by sensory inspection by five panelists.
A: Very flexible, B: Somewhat hard, B: Hard.
4) Foldability The following three levels were evaluated by a sensory test with five panelists.
◎: Very easy to fold, ○: Slightly difficult to fold, ×: Difficult to fold.

[実施例1]
超高分子量ポリエチレン繊維(東洋紡績社製、単糸繊度1.1dtex、引張強度31cN/dtex、初期引張弾性率1000cN/dtex、切断伸度4%)を使用素材とし、押し込み捲縮機(クリンパー)によって捲縮加工を施したトウを作成し、ロータリーカッターを使用して長さ51mmのステープルを作成した。当該ステープルをカード機に投入し、ウェブを作成した後、所定の目付けとなる様に積層(クロスレイヤー)した後、ニードルパンチ機にてパンチング加工を実施して目付重量が約200g/m2の不織布を作成した。タテ30cm、ヨコ30cmに裁断した当該不織布を8枚積層し、表裏に同サイズの防水帆布を配してから全周を30番手のポリエステルミシン糸で通し縫いして試料を作成した。
得られた試料に対して、耐弾性能、柔軟性、折畳性を評価した。その結果を表1に示した。耐弾性能、柔軟性、折畳性はいずれも良好であった。
[Example 1]
Ultra high molecular weight polyethylene fiber (manufactured by Toyobo Co., Ltd., single yarn fineness 1.1dtex, tensile strength 31cN / dtex, initial tensile elastic modulus 1000cN / dtex, cutting elongation 4%) A crimped tow was produced by using a rotary cutter to produce a staple having a length of 51 mm. After the staple is put into a card machine, a web is formed, and then laminated (cross layer) so as to have a predetermined weight, punching is performed with a needle punch machine, and the weight per unit weight is about 200 g / m 2 . A non-woven fabric was created. Eight sheets of the non-woven fabric cut into a length of 30 cm and a width of 30 cm were laminated, and a waterproof canvas of the same size was placed on the front and back, and then the entire circumference was stitched with 30th polyester sewing thread to prepare a sample.
The obtained samples were evaluated for ballistic performance, flexibility, and foldability. The results are shown in Table 1. The ballistic performance, flexibility and foldability were all good.

[実施例2]
不織布積層枚数を10枚とした他は実施例1に同じ試料を作成し、同じ試験を実施した。
その結果を表1に示した。耐弾性能、柔軟性、折畳性はいずれも良好であった。
[Example 2]
The same sample was prepared in Example 1 except that the number of laminated nonwoven fabrics was 10, and the same test was performed.
The results are shown in Table 1. The ballistic performance, flexibility and foldability were all good.

[実施礼3]
不織布積層枚数を12枚とした他は実施例1に同じ試料を作成し、同じ試験を実施した。
その結果を表1に示した。耐弾性能、柔軟性、折畳性はいずれも良好であった。
[Tour 3]
The same test was performed in Example 1 except that the number of laminated nonwoven fabrics was 12, and the same test was performed.
The results are shown in Table 1. The ballistic performance, flexibility and foldability were all good.

[比較例1]
超高分子量ポリエチレン繊維(東洋紡績社製ダイニーマ、単糸繊度1.1dtex、総繊度440dtex)を使用素材とし、目付重量が175g/m2の高密度織物を作成した。タテ30cm、ヨコ30cmに裁断した当該織物を27枚積層し、表裏に同サイズの防水帆布を配してから全周を30番手のポリエステルミシン糸で通し縫いして試料を作成した。得られた試料に対して、実施例1と同じ評価を実施した。その結果を表1に示した。実施例1〜3のほぼ倍の質量であるにもかかわらず、耐弾性能は、これらと同程度の性能を示すに止まった。また、実施例1〜3に比して柔軟性に乏しく、折畳はやや困難であった。
[Comparative Example 1]
An ultrahigh molecular weight polyethylene fiber (Dyneema made by Toyobo Co., Ltd., single yarn fineness 1.1 dtex, total fineness 440 dtex) was used as a material, and a high-density woven fabric having a basis weight of 175 g / m 2 was prepared. Twenty-seven pieces of the woven fabric cut into a length of 30 cm and a width of 30 cm were laminated, and a waterproof canvas of the same size was placed on the front and back, and then the entire circumference was threaded and sewn with 30th polyester sewing thread to prepare a sample. The same evaluation as Example 1 was implemented with respect to the obtained sample. The results are shown in Table 1. Despite the mass almost double that of Examples 1 to 3, the ballistic performance was only as high as these. Moreover, compared with Examples 1-3, the flexibility was poor and folding was somewhat difficult.

[比較例2]
全芳香族ポリアミド繊維(単糸繊度1.6dtex、引張強度21cN/dtex、初期引張弾性率700cN/dtex)を使用素材とした他は実施例1に同じ処方で不織布を作成し、当該不織布を12枚積層した他は実施例1に同じ試料を作成し、同じ試験を実施した。その結果を表1に示した。耐弾性能は、低い性能を示すに止まった。
[Comparative Example 2]
A non-woven fabric was prepared with the same formulation as in Example 1 except that a wholly aromatic polyamide fiber (single yarn fineness 1.6 dtex, tensile strength 21 cN / dtex, initial tensile elastic modulus 700 cN / dtex) was used. The same test was performed in Example 1 except that the sheets were laminated. The results are shown in Table 1. The ballistic performance was only low.

[比較例3]
全芳香族ポリアミド繊維(単糸繊度1.6dtex、総繊度3300dtex、引張強度21cN/dtex、初期引張弾性率700cN/dtex)を使用素材とし、目付重量が470g/m2の高密度織物を作成した。タテ30cm、ヨコ30cmに裁断した当該織物を枚積層し、表裏に同サイズの防水帆布を配してから全周を30番手のポリエステルミシン糸で通し縫いして試料を作成した。得られた試料に対して、実施例1と同じ評価を実施した。その結果を表1に示した。耐弾性能は、低い性能を示すに止まった。また柔軟性に乏しく、折畳は困難であった。
[Comparative Example 3]
Wholly aromatic polyamide fiber and (fineness 1.6Dtex, total fineness 3300 dtex, a tensile strength 21CN / dtex, an initial tensile modulus 700 cN / dtex) to use material, weight per unit area creates a high density fabric 470 g / m 2 . A sample was prepared by laminating sheets of the woven fabric cut into a length of 30 cm and a width of 30 cm, arranging a waterproof canvas of the same size on the front and back, and sewing the entire circumference with 30th polyester sewing thread. The same evaluation as Example 1 was implemented with respect to the obtained sample. The results are shown in Table 1. The ballistic performance was only low. In addition, it was not flexible and was difficult to fold.

Figure 2005291542
Figure 2005291542

本発明の防護幕体は、優れた防護性能のみならず、折畳性、或いは巻取り性が確保される程度の柔軟性を有し、軽量でコンパクトに収納でき、しかも補修材料さえ常備しておけば軽易に応急的な補修整備ができ、防護性能と輸送や取り扱い上の利便性とを兼備する新しい防護材である。砲弾、榴弾、各種爆発物が炸裂した際に、高速で飛散する破片等から、人命、車両、航空機、重要機器等を防護するために、予め設営、敷設し、用済み後は撤収が迅速に行うことができる防護幕体であり、各種爆発物を処理したり取り扱う産業界に寄与することが大である。   The protection curtain of the present invention has not only excellent protection performance but also flexibility enough to ensure folding or winding, can be stored in a lightweight and compact manner, and even has repair materials. This is a new protective material that can be easily repaired quickly and has both protective performance and convenience in transportation and handling. In order to protect human lives, vehicles, aircraft, important equipment, etc. from debris that scatters at high speed when a shell, grenade, or various explosives explode, they are installed and laid in advance, and they can be quickly withdrawn after use. It is a protective curtain that can be performed and contributes greatly to the industry that handles and handles various explosives.

Claims (7)

高強度高弾性率繊維からなる不織布が複数層積層された積層体の両面に、帆布が積層されてなる本体を有することを特徴とする防護幕体。   A protective curtain having a main body in which canvases are laminated on both sides of a laminate in which a plurality of nonwoven fabrics made of high-strength and high-modulus fibers are laminated. 前記高強度高弾性率繊維が、引張強度が18cN/dtex以上、初期引張弾性率が500cN/dtex以上であることを特徴とする請求項1に記載の防護幕体。   The protective curtain according to claim 1, wherein the high-strength and high-modulus fiber has a tensile strength of 18 cN / dtex or more and an initial tensile modulus of 500 cN / dtex or more. 前記高強度高弾性率繊維の単糸繊度が11dtex以下である事を特徴とする請求項1又は2に記載の防護幕体。   The protective curtain according to claim 1 or 2, wherein the single yarn fineness of the high-strength and high-modulus fiber is 11 dtex or less. 前記本体の外縁部に、鳩目孔等が設けられた幅25mm以上のテープ類が縫着されてなることを特徴とする請求項1〜3のいずれかに記載の防護幕体。    The protective curtain body according to any one of claims 1 to 3, wherein tapes having a width of 25 mm or more provided with eyelet holes or the like are sewn on an outer edge portion of the main body. 前記不織布の厚みが1〜8mmであることを特徴とする請求項1〜3のいずれかに記載の防護幕体。    The protective curtain according to any one of claims 1 to 3, wherein the nonwoven fabric has a thickness of 1 to 8 mm. 前記不織布がニードルパンチ加工によって繊維が3次元交絡された構造を有することを特徴とする請求項1〜5のいずれかに記載の防護幕体。    The protective curtain according to any one of claims 1 to 5, wherein the nonwoven fabric has a structure in which fibers are three-dimensionally entangled by needle punching. 前記高強度高弾性率繊維が重量平均分子量が50万以上、極限粘度が5dl/g以上である超高分子量ポリエチレン繊維であることを特徴とする請求項1に記載の防護幕体。    The protective curtain according to claim 1, wherein the high-strength and high-modulus fiber is an ultrahigh molecular weight polyethylene fiber having a weight average molecular weight of 500,000 or more and an intrinsic viscosity of 5 dl / g or more.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016053470A (en) * 2010-04-19 2016-04-14 ハネウェル・インターナショナル・インコーポレーテッド Enhanced ballistic performance of polymer fibers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016053470A (en) * 2010-04-19 2016-04-14 ハネウェル・インターナショナル・インコーポレーテッド Enhanced ballistic performance of polymer fibers

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