JPH0481941B2 - - Google Patents
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- Publication number
- JPH0481941B2 JPH0481941B2 JP61152232A JP15223286A JPH0481941B2 JP H0481941 B2 JPH0481941 B2 JP H0481941B2 JP 61152232 A JP61152232 A JP 61152232A JP 15223286 A JP15223286 A JP 15223286A JP H0481941 B2 JPH0481941 B2 JP H0481941B2
- Authority
- JP
- Japan
- Prior art keywords
- protective equipment
- resin
- fabric
- weight
- thermosetting resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000004416 thermosoftening plastic Substances 0.000 description 2
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- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 239000004641 Diallyl-phthalate Substances 0.000 description 1
- 229910000737 Duralumin Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 208000027790 Rib fracture Diseases 0.000 description 1
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 1
- 210000001015 abdomen Anatomy 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 1
- 239000004841 bisphenol A epoxy resin Substances 0.000 description 1
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- 150000002739 metals Chemical class 0.000 description 1
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Landscapes
- Reinforced Plastic Materials (AREA)
- Laminated Bodies (AREA)
Description
（産業上の利用分野）
本発明は、防護具用の新規な部材およびその製
造方法に関わり、より詳細には、軽量でしかも耐
弾性、耐刃性にすぐれ、ヘルメツト、盾あるいは
防弾衣に於ける腹あて、すねあて、肩あて等の防
護具に使用して好適な部材およびその製造方法に
関する。
（従来の技術）
従来、銃弾、刃物等の凶器あるいは爆原物の破
片より身体を保護するための防護具ないしはその
部材としては、金属板、セラミツクス板、高強力
ナイロン織物、あるいはパラ系芳香族ポリアミド
（たとえばDu Pont社製ケブラー
）織物、又は
これらを組み合わせたものが使われて来た。しか
し、鉄やアルミ合金等の金属やセラミツクスは、
重く機動性に欠ける欠点があり、高強力ナイロン
織物は、耐弾性が劣るため積層枚数が増え嵩張る
欠点がある。これに対し、パラ系芳香族ポリアミ
ド繊維織物は、その高強度、高耐衝撃性により、
強力ナイロンより積層重量を減少でき、防弾チヨ
ツキ用の素材として好んで利用されている。しか
し、パラ系芳香族ポリアミド織物も、柔軟で着心
地が良い防弾性能の良好な防弾衣を得る事が出来
る反面、日本刃、出刃、アイスピツク、千枚通し
等による突き刺しには意外な程簡単に貫通を許す
という欠点を有している。さらに、銃弾の貫通は
許さないものの、織物が柔軟であるが故に裏面側
つまり人体側への変形量が大きく、死亡事故には
至らぬとも肋骨の骨折等の事故が起き易い欠点を
有していた。
一方、上記欠点を改良する為に、高強力ナイロ
ン織物、パラ系芳香族ポリアミド繊維織物等を多
層積層したものに熱硬化性樹脂を含浸し硬化せし
めた防護具ないしは防護具用部材も提案されてお
り、この場合は織物が樹脂によつて充填、固着さ
れている為、刃物の突き刺しにも抵抗力があり、
また構造的強度を付与せしめることも可能であつ
て、ヘルメツト、盾用としても有用である。しか
しながら、織物単独の積層物よりも30〜40％重量
が重くなる欠点があり、また樹脂の含浸量が40％
程度以上になると逆に銃弾が貫通し易くなる傾向
がある為、樹脂含浸量が均一となるように充分管
理をしないと、防弾性能に部分的なばらつきが生
ずるという難点もある。
（発明が解決しようとする問題点）
本発明者らは、上述の如き従来の防護具ないし
は防護具用部材にみられる諸難点、即ち高強力ナ
イロン織物やパラ系芳香族ポリアミド繊維織物等
の織物のみからなるソフトタイプの防護具（部
材）における耐刃性不良と被弾時の大きな変形、
そして金属板、セラミツクス板あるいは熱硬化性
樹脂含浸織物等のハードタイプの防護具（部材）
における過大重量などが悉く改善され、軽量でし
かも耐弾性、耐刃性の良好な防護具を与え得る新
規な防護具用部材を提供すべく鋭意研究を行つた
結果、高強度有機合成繊維織物の多層積層物に熱
硬化性樹脂を含浸し硬化せしめるようにする場合
に、該樹脂による含浸、硬化を積層物の表面層の
みに留めても、残余の織物を互いにその全面で接
合せしめることにより適度の剛性をもたせると共
に目ずれ等の織物組織の変位の発生を抑制するよ
うにすれば、積層物の全体を樹脂により含浸、硬
化せしめずとも、充分な耐刃性が得られ、かつま
た部分含浸の故に軽量化が計り得るのみならず、
耐弾性能に関しても、上記の適度な剛性（換言す
れば適度な可撓性）を有する非含浸層が存在する
ために、ハードタイプの樹脂含浸織物の場合のよ
うに樹脂量の部分的な過剰が原因で銃弾が貫通し
やすくなるといつたような問題がなく、また被弾
時の変形量も著しく減少することを見出し、かゝ
る知見に基づいてさらに検討をすすめ本研究を完
成するに至つた。
（問題点を解決する為の手段）
即ち本発明は、まず第一に、引張り強さが20
ｇ／ｄ以上の高強度有機合成繊維使いの織物を多
層積層した構造からなり、その表裏両外層部の少
なくとも一方の織物は熱硬化性樹脂によつて含
浸、硬化されており、残余の織物は接着剤により
相互にかつ実質的にその全面で接合されているこ
とを特徴とする防護具用部材であり、さらに第二
に、引張り強さが20ｇ／ｄ以上の高強度有機合成
繊維使いの織物の複数枚を、フイルム状接着剤を
介して積層したものの上下のいずれか一方もしく
は双方に、同じく引張り強さが20ｇ／ｄ以上の高
強度有機合成繊維織物に熱硬化性樹脂を含浸して
なるプリプレグを重ね合わせ、これを加熱加圧し
てプリプレグの硬化とフイルム状接着剤による熱
接着とを行わしめることを特徴とする防護具用部
材の製造方法である。
本発明に云う引張り強さが20ｇ／ｄ以上の高強
度有機合成繊維としては、従来より防護具用素材
として使用されているパラ系芳香族ポリアミド
〔例えば、Du Pont社製ケブラー
、帝人(株)製
HM−50など〕や芳香族ポリエステル〔例えば、
住友化学(株)製エコノール
など〕等を好ましいも
のとして挙げることができ、更に超高分子量ポリ
エチレン繊維等も用いることができる。
本発明で用いるこれら高強度有機合成繊維使い
の織物としては、その構成に特に制限はないも
のゝ、一般かつ好適には150〜2000d、特に1000
〜1500dのフイラメント糸を用い、これを平織も
しくは斜子織としたものが使用される。この場
合、打ち込み密度（織物重量）については、各織
設計に於ける限界密度近くまで打ち込まれたもの
が望ましく、例えば1500dの糸使いの２×２斜子
織であれば、経、緯の打ち込み密度が34×34本／
25mm程度（織物重量として460ｇ／m2程度）とな
るように、また1000dの糸使いの平織であれば同
じく31×31本／25mm程度（織物重量として280
ｇ／m2程度）となるようにしたものが好適に用い
られる。打ち込み密度が甘くなると、耐弾性が低
下する傾向が認められる。
本発明の防護具用部材は、上記の如き高強度有
機合成繊維織物を多層積層したものを基本構造体
とし、その外層部の織物に熱硬化性樹脂を含浸、
硬化（以下、このような場合に単に硬化というこ
とがある）せしめると共に残余の積層織物はこれ
を接着剤で全面接合せしめるようにした構成から
なるものである。
こゝで高強度有機合成繊維織物の積層量は、防
護具（部材）の用途等によつても異るが、例えば
38口径もしくは45口径の拳銃からの防護を目的と
する場合であれば、総重量で3500〜5000ｇ／m2の
範囲となるようにすることが望ましく、またかゝ
る範囲とすれば刃物による突き刺しに対しても充
分な抵抗性を付与することができる。
この織物積層体の外層部をどの範囲まで熱硬化
性樹脂で硬化せしめるかもまた防護具（部材）の
使用目的等によつて異なるが、一般的には織物重
量として200〜1000ｇ／m2に相当する量の外層部
を硬化せしめるようにすればよく、この範囲から
上記の使用目的等に応じて適宜の量が選択され
る。
積層体外層部の硬化に用いる熱硬化性樹脂とし
ては、エポキシ樹脂、不飽和ポリエステル樹脂、
ビニルエステル樹脂、フエノール樹脂など一般に
積層板用に用いられる熱硬化性樹脂が好適なもの
として挙げられる。
それら熱硬化性樹脂の使用量（含浸量）として
は、硬化層の重量（織物と樹脂の合計重量）に対
して30〜60重量％の範囲が適当である。樹脂使用
量が30重量％を下廻ると耐刃性が不充分となる傾
向が認められ、一方60重量％を超えて多くなると
耐弾性が低下する。
上記の熱硬化性樹脂による硬化層は、通常織物
積層体の表裏両外層部のいずれか一方（防護具と
した時凶器が当たる面）に形成されるが、場合に
よつては表裏両方にこれを形成せしめるようにす
ることもできる。また、熱硬化性樹脂で硬化され
る織物は、単層あるいは複数層のいずれであつて
もよく、要は前記した硬化さるべき織物重量の範
囲を満足するようにすればよい。唯、製造工程上
は、単層の方が一般に操作が簡便となる利点があ
る。
本発明の防護具用部材に於いて、上記の硬化層
以外の部分は、織物同志が接着剤で接合された構
造からなり、これによつて適度の剛性（換言すれ
ば適度の可撓性）が付与されている。この場合、
織物は実質的にその全面で相互に接合されている
ことが重要であり、かくすることにより全体的に
均斉な剛性が付与されるこゝとなることはもとよ
り、さらに被弾時あるいは刃物突き刺し時に於け
る目ずれ等の発生が抑制され、その結果耐弾性、
耐刃性が著しく向上する。また、この剛性付与、
さらには目ずれ等の防止の観点からは、接着剤は
織物の実質的に全面に施与されていることに加え
て、織物を構成している糸条にある程度浸透して
これを膠着せしめるようにしていることが望まし
い。
接着剤としては、熱可塑性（熱可融性）樹脂
系、熱硬化性樹脂系あるいはエラストマー系など
のいずれであつてもよいが、防護具用部材の製造
工程上からは熱可塑性（熱可融性）樹脂系が取り
扱いが容易であつて好ましく、なかでも前記硬化
層を構成する熱硬化性樹脂の硬化温度以下で可塑
化ないしは融解するものを使用すれば、硬化層の
硬化と接着剤による熱接着、さらには糸条の膠着
を同時に行わしめることが可能となる利点があ
る。
かゝる観点から好ましい接着剤を挙げると、例
えばポリエチレン、ポリプロピレン、低融点共重
合ポリエステルなどがあり、さらに全面接着が容
易に行なえるとの点からするとそれらのフイルム
状物の使用が特に望ましい。
接着剤の使用量は、固型分で、織物の重量（積
層接着される織物の１層の重量）に対して５〜15
重量％の範囲とするのがよい。接着剤量が５重量
％を下廻ると、織物の接合さらには織物を構成す
る糸条の膠着、固定が不充分となつて、被弾時の
変形量が増大する等の虞れがあり、一方15重量％
を上廻る場合には、それ以上耐弾性、耐刃性の向
上は認められず、たゞ単に重量増加を招くのみで
あつて好ましくない。
かゝる構成からなる本発明の防護具用部材を製
造するための方法としては種々の方法があるが、
銃器、凶器より生命、身体を保護するという防護
具の役割からして、防護具ひいては防護具用部材
には、ばらつきのない一定の品質が備わつている
ことが特に必要とされることゝ、さらに製造工程
に於ける操作の簡便さ、工程管理の容易さ等を考
え合わせると、前記した方法、即ち高強度有機合
成繊維織物とフイルム状接着剤との交互積層体に
プリプレグを配したものを加熱加圧する方法が最
も好ましい方法として例示される。
この方法を実施するに当たつて、プリプレグと
しては、好ましくは１層で前記した硬化層の織物
重量の範囲（200〜1000ｇ／m2）を満足する重量
からなる高強度有機合成繊維織物に、常法に従つ
て予め前記の如き熱硬化性樹脂を含浸させたもの
が使用される。このプリプレグは本発明の防護具
用部材に於いて外層部の硬化層を構成するもので
あるが、かゝるプリプレグの使用により、例えば
織物積層物形成後その外層部に熱硬化性樹脂を含
浸、硬化せしめる方法に比し、硬化層内に於ける
樹脂の分布をより均一なものとすることが可能と
なり、また樹脂含浸量の調節も容易となる。
織物接合層の形成に用いるフイルム状接着剤と
しては、前記したポリエチレンフイルム、ポリプ
ロピレンフイルム、低融点共重合ポリエステルフ
イルムなどの熱可塑性樹脂フイルムが最も好適で
あるが、場合によつてはエポキシ樹脂フイルムを
用いてもよい。これらフイルム状接着剤はプリプ
レグの硬化温度よりも低い軟化点ないしは融点を
有するものであることが特に望ましい。
本発明の方法は、例えば適宜の重量からなる高
強度有機合成繊維織物と上記の如きフイルム状接
着剤とを交互に積層しておき、この積層物の上面
もしくは場合によつては上下両面に、プリプレグ
を、一般にそれらの合計の織物重量が3500〜5000
ｇ／m2で、かつプリプレグ（硬化層）の織物重量
が200〜1000ｇ／m2となるような重量比で重ね合
わせ、これを熱プレス機等を用いて加熱加圧し、
プリプレグの硬化とフイルム状接着剤による熱接
着とを行わしめることによつて実施される。加熱
加圧は、プリプレグ（熱硬化性樹脂）の硬化温度
およびフイルム状接着剤の軟化ないしは融解温度
以上の温度にて、通常１〜30Kg／cm2の圧力下に10
〜60分間保持することによつて行われる。
かくして、外層部に織物硬化層を、また内層部
に織物接合層を配してなる本発明の防護具用部材
が得られるが、この防護具用部材を、腹あて、肩
あて、盾等３次曲面を有する形状からなる防護具
に適用する場合には、上記の加熱加圧工程をそれ
ら防護具の金型を用いて行い、外層部と内層部と
を該金型中で一体成型するようにすることが望ま
しい。
本発明の防護具用部材は、上記の方法のほか、
例えば外層部の織物硬化層と内層部の織物接合層
とを別々に製造しておきそれらを適宜の手段によ
り接着一体化する方法、あるいは織物をフイルム
状接着剤等を用いて多層接合積層しておき、その
外層部に熱硬化性樹脂を含浸硬化せしめる方法等
によつても製造することが可能である。唯、前者
の後接着法の場合は、工程が一工程増えるばかり
でなく、３次曲面を有する形状からなる防護具の
成型が厄介となる点で、また後者の後含浸法の場
合は含浸樹脂の分布の均一性等の点でいずれも前
に詳述した方法に及ばない。
（作用）
本発明の防護具用部材は、高強度有機合成繊維
織物の積層物の外層部を熱硬化性樹脂で硬化する
と共に、内層部を接着剤で全面接着して適度の剛
性を有する構造のものとしたことにより、積層物
の一部（外層部）のみの硬化にも拘らず、全体硬
化の場合と同様に貫通抵抗を充分高いレベルに保
持することが可能となつたばかりでなく、銃弾に
対する抵抗性についても、表面の硬化層と内部の
接合層との相乗作用により、その貫通を阻止する
と共に、適度の剛性（可撓性）を有する接合層の
働きによつて被弾エネルギーを分散、吸収し、人
体側への変形量を減ずるとの効果を奏し得たもの
であつて、部分硬化に基づく重量減とも相俟つ
て、こゝに軽量でしかも耐弾性、耐刃性のいずれ
にもすぐれた防護具用部材の提供がはじめて可能
となつたのである。
次に、実施例および比較例を挙げて本発明をさ
らに詳細に説明する。なお、それらに於いて、防
護具用部材の耐弾性および耐刃性の評価は以下の
ようにして行つた。
耐弾性：30cm角の試料を、厚さ20cmの油粘土壁に
垂直に貼り付け、これに、10ｍの距離より38口
径および45口径の拳銃をそれぞれ３発ずつ、か
つ各射撃点が10cm以上離れるように射撃し、そ
の時の銃弾の貫通の程度、および試料背部の粘
土のへこみ深さから耐弾性を評価した。
耐刃性：上記と同様にして油粘土壁に貼り付けた
試料に、日本刀およびアイスピツクを両手で用
いて勢いよく突き刺し、その際刃先が油粘土壁
に達するかどうかで耐刃性を評価した。
製造例
高強度有機合成繊維として、パラ系芳香族ポリ
アミド繊維であるケブラー
〔Du Pont社製〕を
用い、第１表に示す各種の織物を製織した。
(Field of Industrial Application) The present invention relates to a novel member for protective equipment and a method for manufacturing the same, and more specifically, it is lightweight and has excellent bullet resistance and cut resistance, and is suitable for use in helmets, shields, and bulletproof clothing. The present invention relates to a member suitable for use in protective equipment such as belly pads, shin pads, shoulder pads, etc., and a method for manufacturing the same. (Prior Art) Conventionally, protective equipment or its components for protecting the body from weapons such as bullets, knives, or fragments of explosives have been made of metal plates, ceramic plates, high-strength nylon fabrics, or para-aromatic materials. Polyamide (eg Du Pont Kevlar) fabrics or combinations thereof have been used. However, metals such as iron and aluminum alloys and ceramics
It has the disadvantage of being heavy and lacks maneuverability, and high-strength nylon fabrics have the disadvantage of being bulky due to the increased number of layers due to poor ballistic resistance. On the other hand, para-aromatic polyamide fiber fabrics have high strength and high impact resistance.
It can reduce the laminated weight compared to strong nylon, and is preferred as a material for bulletproof armor. However, although para-aromatic polyamide fabrics can provide bulletproof clothing that is flexible and comfortable to wear, and has good bulletproof performance, it is surprisingly easy to penetrate with Japanese blades, deba, ice picks, awls, etc. It has the disadvantage of being forgiving. Furthermore, although it does not allow bullets to penetrate, the fabric is flexible, so the amount of deformation toward the back side, that is, the human body side, is large, and it has the drawback that accidents such as rib fractures are likely to occur even if it does not result in death. Ta. On the other hand, in order to improve the above-mentioned drawbacks, protective equipment or members for protective equipment have been proposed, which are made by impregnating and hardening a thermosetting resin into a multi-layer lamination of high-strength nylon fabrics, para-aromatic polyamide fiber fabrics, etc. In this case, the fabric is filled and fixed with resin, so it is resistant to being punctured by a knife.
It is also possible to impart structural strength, making it useful for helmets and shields. However, it has the disadvantage that it is 30 to 40% heavier than a laminate made of woven fabric alone, and the amount of resin impregnated is 40%.
On the other hand, if it exceeds this level, bullets tend to penetrate more easily, so if the amount of resin impregnated is not sufficiently controlled to be uniform, there will be local variations in bulletproof performance. (Problems to be Solved by the Invention) The present inventors have solved the problems found in conventional protective equipment or members for protective equipment as described above, namely, fabrics such as high-strength nylon fabrics and para-aromatic polyamide fiber fabrics. Poor blade resistance and large deformation when hit by bullets in soft type protective equipment (components) made of
And hard protective equipment (members) such as metal plates, ceramic plates, or thermosetting resin-impregnated fabrics.
As a result of intensive research in order to provide a new protective equipment component that is lightweight and has good bullet resistance and cut resistance, the excessive weight of the fabric has been improved. When impregnating and curing a laminate with a thermosetting resin, even if the impregnation and curing with the resin is limited to only the surface layer of the laminate, the remaining fabrics can be bonded to each other on their entire surface to achieve a moderate level of hardening. By providing rigidity and suppressing the occurrence of displacement of the fabric structure such as misalignment, sufficient edge resistance can be obtained without impregnating and curing the entire laminate with resin, and also because of partial impregnation. Not only is it possible to reduce weight, but
Regarding ballistic performance, because there is a non-impregnated layer with moderate rigidity (in other words, moderate flexibility) mentioned above, there is a possibility that the amount of resin may be partially excessive as in the case of hard type resin-impregnated fabrics. We found that there was no problem such as the bullet penetration caused by bullets, and that the amount of deformation when hit was significantly reduced.Based on these findings, we conducted further studies and completed this research. . (Means for solving the problems) That is, the present invention first of all has a tensile strength of 20
It consists of a multi-layered structure of fabrics made of high-strength organic synthetic fibers of g/d or higher, and at least one of the outer layers, both the front and back, is impregnated and hardened with a thermosetting resin, and the remaining fabric is A protective equipment member characterized by being bonded to each other and substantially over the entire surface thereof with an adhesive, and secondly, a fabric made of high-strength organic synthetic fibers having a tensile strength of 20 g/d or more. A high-strength organic synthetic fiber fabric with a tensile strength of 20 g/d or more is impregnated with a thermosetting resin on either or both of the upper and lower sides of a plurality of sheets laminated with a film adhesive. This is a method for manufacturing a member for protective equipment, characterized by stacking prepregs and heating and pressurizing them to cure the prepregs and thermally bond them with a film adhesive. The high-strength organic synthetic fibers with a tensile strength of 20 g/d or more referred to in the present invention include para-aromatic polyamides conventionally used as materials for protective equipment (e.g., Kevlar manufactured by Du Pont, Teijin Ltd.). made
HM-50, etc.] and aromatic polyesters [e.g.
Preferred examples include ECONOL manufactured by Sumitomo Chemical Co., Ltd., and ultra-high molecular weight polyethylene fibers and the like can also be used. There are no particular restrictions on the composition of the woven fabrics using these high-strength organic synthetic fibers used in the present invention, but generally and preferably 150 to 2000 d, particularly 1000 d
A filament yarn of ~1500 d is used, which is made into a plain weave or a diagonal weave. In this case, it is desirable that the weaving density (fabric weight) be close to the critical density for each weave design.For example, for a 2x2 basket weave using 1500d thread, the weaving density (fabric weight) should be Density is 34 x 34 pieces/
If it is a plain weave using 1000d yarn, it will be about 31 x 31 threads/25mm (the weight of the fabric is about 280g/ m2 ).
g/ m2 ) is preferably used. There is a tendency for ballistic resistance to decrease as the driving density decreases. The protective equipment member of the present invention has a basic structure composed of multiple layers of high-strength organic synthetic fiber fabrics as described above, and the outer layer of the fabric is impregnated with a thermosetting resin.
The fabric is cured (hereinafter sometimes simply referred to as curing in such cases), and the remaining laminated fabric is bonded on its entire surface with an adhesive. The amount of lamination of high-strength organic synthetic fiber fabric varies depending on the use of the protective equipment (components), but for example,
If the purpose is to protect against 38 caliber or 45 caliber handguns, it is desirable that the total weight is in the range of 3500 to 5000 g/m 2 , and if it is in such a range, it will be difficult to pierce with a knife. It is also possible to provide sufficient resistance to. The extent to which the outer layer of this woven fabric laminate is hardened with thermosetting resin varies depending on the purpose of use of the protective equipment (member), but generally the weight of the woven fabric corresponds to 200 to 1000 g/ m2. The amount of the outer layer portion to be cured may be selected from this range depending on the above-mentioned purpose of use. The thermosetting resin used for curing the outer layer of the laminate includes epoxy resin, unsaturated polyester resin,
Suitable examples include thermosetting resins commonly used for laminates, such as vinyl ester resins and phenol resins. The amount of the thermosetting resin used (the amount of impregnation) is suitably in the range of 30 to 60% by weight based on the weight of the cured layer (total weight of the fabric and resin). When the amount of resin used is less than 30% by weight, there is a tendency for the blade resistance to become insufficient, while when it exceeds 60% by weight, the ballistic resistance decreases. The above-mentioned hardened layer of thermosetting resin is usually formed on either the front or back outer layer of the textile laminate (the side that would be hit by a weapon when used as a protective device), but in some cases it is formed on both the front and back. It is also possible to cause the formation of Further, the fabric to be cured with the thermosetting resin may be a single layer or a multilayer fabric, as long as it satisfies the weight range of the fabric to be cured as described above. However, in terms of the manufacturing process, a single layer generally has the advantage of being easier to operate. In the protective equipment member of the present invention, the portion other than the above-mentioned hardened layer has a structure in which woven fabrics are bonded together with an adhesive, thereby providing appropriate rigidity (in other words, appropriate flexibility). has been granted. in this case,
It is important that the fabric be joined to each other on substantially its entire surface, which not only gives uniform rigidity to the entire fabric, but also provides resistance when being hit by a bullet or being pierced by a knife. The occurrence of misalignment, etc. is suppressed, resulting in improved ballistic resistance and
Blade resistance is significantly improved. In addition, this rigidity imparting,
Furthermore, from the perspective of preventing misalignment, adhesives are applied not only to virtually the entire surface of the fabric, but also to a certain extent to penetrate into the threads that make up the fabric and make them stick together. It is preferable to do so. The adhesive may be thermoplastic (thermofusible) resin, thermosetting resin, or elastomer, but thermoplastic (thermofusible) Resin-based resins are preferred because they are easy to handle, and in particular, if a resin that plasticizes or melts at a temperature below the curing temperature of the thermosetting resin constituting the cured layer is used, the cure of the cured layer and the heat generated by the adhesive can be avoided. There is an advantage that adhesion and further thread sticking can be performed at the same time. Preferred adhesives from this point of view include polyethylene, polypropylene, and low-melting point copolymer polyester, and it is particularly desirable to use film-like materials of these adhesives since they can be easily bonded over the entire surface. The amount of adhesive used is 5 to 15% of the weight of the fabric (the weight of one layer of fabric to be laminated and bonded) in terms of solid content.
It is preferable to set it in the range of % by weight. If the amount of adhesive is less than 5% by weight, there is a risk that the bonding of the fabric, as well as the sticking and fixing of the threads that make up the fabric, will be insufficient, and the amount of deformation when hit by a bullet will increase. 15% by weight
If it exceeds this value, no further improvement in ballistic resistance or edge resistance will be observed, and this will simply result in an increase in weight, which is not preferable. There are various methods for manufacturing the protective equipment member of the present invention having such a configuration.
Considering the role of protective equipment in protecting lives and bodies from firearms and other deadly weapons, it is particularly important that protective equipment and, by extension, protective equipment components have a consistent quality. Furthermore, considering the ease of operation and ease of process control in the manufacturing process, we decided to use the method described above, in which prepreg is arranged on an alternate laminate of high-strength organic synthetic fiber fabric and film adhesive. The method of applying heat and pressure is exemplified as the most preferable method. In carrying out this method, the prepreg is preferably a high-strength organic synthetic fiber fabric having a weight that satisfies the above-mentioned range of weight of the cured layer fabric (200 to 1000 g/m 2 ). A material that has been impregnated with the above-mentioned thermosetting resin in accordance with a conventional method is used. This prepreg constitutes the hardened outer layer in the protective equipment member of the present invention, and by using such prepreg, for example, after forming a textile laminate, the outer layer can be impregnated with a thermosetting resin. Compared with the curing method, it is possible to make the distribution of the resin in the cured layer more uniform, and it is also easier to adjust the amount of resin impregnated. As the film adhesive used for forming the textile bonding layer, thermoplastic resin films such as the above-mentioned polyethylene film, polypropylene film, and low melting point copolymerized polyester film are most suitable; however, in some cases, epoxy resin films may also be used. May be used. It is particularly desirable that these film adhesives have a softening point or melting point lower than the curing temperature of the prepreg. In the method of the present invention, for example, high-strength organic synthetic fiber fabrics of appropriate weights and film-like adhesives as described above are alternately laminated, and on the upper surface of this laminate, or on both upper and lower surfaces as the case may be, prepregs, generally their total fabric weight is 3500~5000
g/m 2 and the weight ratio of the prepreg (cured layer) fabric is 200 to 1000 g/m 2 , and heat and press this using a heat press machine etc.
This is carried out by curing the prepreg and thermally bonding it with a film adhesive. Heat and pressure is applied at a temperature higher than the curing temperature of the prepreg (thermosetting resin) and the softening or melting temperature of the film adhesive, usually under a pressure of 1 to 30 kg/ cm2 .
This is done by holding for ~60 minutes. In this way, the protective equipment member of the present invention, which has a hardened fabric layer on the outer layer and a textile bonding layer on the inner layer, is obtained. When applied to protective equipment that has a curved shape, the heating and pressurizing process described above is performed using a mold for the protective equipment, and the outer layer and the inner layer are integrally molded in the mold. It is desirable to do so. The member for protective equipment of the present invention can be used in addition to the above method.
For example, a method may be used in which the outer fabric hardening layer and the inner fabric bonding layer are manufactured separately and then bonded and integrated by appropriate means, or the fabrics are laminated in multiple layers using a film adhesive or the like. It can also be manufactured by a method in which the outer layer is soaked and hardened by impregnating the outer layer with a thermosetting resin. However, in the case of the former post-adhesion method, not only does it add one step to the process, but it is also difficult to mold the protective equipment with a cubic curved surface, and in the latter post-impregnation method, the impregnated resin None of these methods are as good as the previously detailed methods in terms of uniformity of distribution, etc. (Function) The protective equipment member of the present invention has a structure in which the outer layer of a laminate of high-strength organic synthetic fiber fabric is hardened with a thermosetting resin, and the inner layer is fully bonded with an adhesive to have appropriate rigidity. This not only makes it possible to maintain penetration resistance at a sufficiently high level even though only a portion (the outer layer) of the laminate is cured, as in the case of hardening the entire laminate, but it also makes it possible to maintain penetration resistance at a sufficiently high level. As for resistance to bullets, the synergistic effect of the hardened surface layer and the internal bonding layer prevents the bullet from penetrating, and the bonding layer has an appropriate degree of rigidity (flexibility) to disperse the energy of the bullet. It has the effect of reducing the amount of deformation toward the human body by absorbing it, and combined with the weight reduction due to partial hardening, it is lightweight and has excellent ballistic and blade resistance. For the first time, it became possible to provide components for protective equipment. Next, the present invention will be explained in more detail by giving Examples and Comparative Examples. In addition, in these cases, the bullet resistance and blade resistance of the members for protective equipment were evaluated as follows. Bullet resistance: A 30cm square sample is pasted vertically on a 20cm thick oil clay wall, and three shots each are fired from a 38 caliber and 45 caliber handgun at a distance of 10m, with each firing point at least 10cm away. The bullet resistance was evaluated based on the degree of bullet penetration and the depth of the dent in the clay on the back of the sample. Blade resistance: A sample attached to an oil clay wall in the same manner as above was stabbed vigorously with a Japanese sword and an ice pick using both hands, and blade resistance was evaluated by determining whether the cutting edge reached the oil clay wall. Production Example Various fabrics shown in Table 1 were woven using Kevlar (manufactured by Du Pont), which is a para-aromatic polyamide fiber, as a high-strength organic synthetic fiber.
【表】
＊ 以下の各実施例では、各織物をこの
品番で示す。
実施例 １
K735に、不飽和ポリエステル〔商品名ポリマ
ール6288、武田薬品工業(株)製〕、ジアリルフタレ
ートおよびベンゾイルパーオキサイドの100：
15：２（重量比）の混合物を含浸して、樹脂含量
40重量％（織物と樹脂の合計量に対して。以下同
じ）の不飽和ポリエステルプリプレグ（以下、
K735UPという）を調製した。
別に、K735と重量40ｇ／m2のポリエチレンフ
イルム（フイルム状接着剤）とを交互に積層して
K735、８枚とフイルム７枚とからなる積層物を
作成し、その上から前記のK735UPを１枚重ね合
わせ、熱プレスにより、130℃、10Kg／cm2の条件
下に30分間加熱加圧成型して板状の防護具用部材
を得た（本発明例１）。
この防護具用部材について、耐弾性および耐刃
性の評価試験を行い、その結果を第２表に示し
た。
なお、第２表には比較のため、下記の各試料
（比較例１〜５）について同様の評価試験を行つ
た結果を併記した。
比較例 １
ジユラルミン（Ａ−2024−T6）、厚さ2.7mm
比較例 ２
K735、10枚を重ね合わせたもの
比較例 ３
K735UP10枚を重ね合わせ、上記本発明例１と同
様の条件下に熱プレスしたもの。
比較例 ４
K735UP8枚を重ね合わせ、上記本発明例１と同
様の条件下に熱プレスしたもの。
比較例 ５
K735とポリエチレンフイルム（重量40ｇ／m2）
を交互に積層してk735、10枚とフイルム９枚と
からなる積層物を作成し、これを上記の本発明例
１と同様の条件下に熱プレスしたもの。[Table] * In the following examples, each fabric is indicated by this product number.
Example 1 K735, unsaturated polyester [trade name Polymer 6288, manufactured by Takeda Pharmaceutical Co., Ltd.], diallyl phthalate and benzoyl peroxide 100:
Impregnated with a 15:2 (weight ratio) mixture to reduce the resin content.
40% by weight (based on the total amount of fabric and resin; the same applies hereinafter) of unsaturated polyester prepreg (hereinafter referred to as
K735UP) was prepared. Separately, K735 and polyethylene film (film adhesive) with a weight of 40 g/m 2 were laminated alternately.
A laminate consisting of 8 sheets of K735 and 7 sheets of film was created, one sheet of the above-mentioned K735UP was placed on top of the laminate, and then heated and pressure molded for 30 minutes at 130℃ and 10Kg/cm 2 using a heat press. A plate-shaped member for protective equipment was obtained (Example 1 of the present invention). This protective equipment member was subjected to evaluation tests for ballistic resistance and blade resistance, and the results are shown in Table 2. For comparison, Table 2 also lists the results of similar evaluation tests for the following samples (Comparative Examples 1 to 5). Comparative example 1 Duralumin (A-2024-T6), thickness 2.7 mm Comparative example 2 K735, 10 sheets stacked Comparative example 3 10 sheets of K735UP were stacked and hot pressed under the same conditions as the above-mentioned invention example 1 What I did. Comparative Example 4 Eight sheets of K735UP were stacked and hot pressed under the same conditions as in Invention Example 1 above. Comparative example 5 K735 and polyethylene film (weight 40g/m 2 )
A laminate consisting of 10 sheets of K735 and 9 sheets of film was prepared by laminating them alternately, and this was hot pressed under the same conditions as in Example 1 of the present invention.
【表】
(2) ○貫通せず、△一部貫通、×全部貫通
第２表の結果から、本発明の防護具用部材（本
発明例１）が軽量でしかも耐弾性、耐刃性のいず
れにもすぐれるのに対し、従来の防護具用部材
（比較例１〜４）によつては、軽量性、耐弾性お
よび耐刃性のすべてを満足せしめることは困難で
あることが判る。また、比較例５の結果から明ら
かなように、織物接合層のみからなり硬化層を欠
く防護具用部材によつては、本発明同様の効果は
期待し得ない。
実施例 ２
実施例１の本発明例１に準じて以下の各防護具
用部材を調製した。
(1) プリプレグとしてK735UPに代えて下記のエ
ポキシプリプレグ（K735EP）を用い、加熱加
圧条件を170℃、20Kg／cm2、45分間とするほか
は本発明例１と同様にして防護具用部材を得た
（本発明例２）。
K735EP：K735に、エポキシ樹脂〔エポキシ
当量450のビスフエノールＡ系エポキシ樹脂〕、
硬化剤（ジシアンジアミド）および硬化促進剤
（ベンジルジメチルアミン）の100：3.5：１（重
量比）の混合物を含浸した樹脂含量40重量％の
エポキシプリプレグ。
(2) K735EP（プリプレグ）を、K735とポリエチ
レンフイルムの積層物（但し、積層数はK735
８枚、ポリエチレンフイルム７枚）の表裏両面
にそれぞれ１枚宛重ね合わせるようにするほか
は本発明例２と同様にして防護具用部材を得た
（本発明例３）。
(3) フイルム状接着剤としてポリエチレンフイル
ムに代えてエポキシ樹脂フイルム（重量60ｇ／
cm2）を用いるほかは本発明例２と同様にして防
護具用部材を得た（本発明例４）。
ここに得られた各防護具用部材について、その
性能評価を行つた結果を第３表に示す。[Table] (2) ○ Not penetrated, △ Partially penetrated, × Fully penetrated From the results in Table 2, it can be seen that the protective equipment member of the present invention (Invention Example 1) is lightweight and has both bullet resistance and blade resistance. However, it is found that it is difficult for conventional protective equipment members (Comparative Examples 1 to 4) to satisfy all of the requirements of lightness, bullet resistance, and blade resistance. Moreover, as is clear from the results of Comparative Example 5, the same effects as those of the present invention cannot be expected from a protective equipment member consisting only of a textile bonding layer and lacking a hardened layer. Example 2 The following protective equipment members were prepared according to Invention Example 1 of Example 1. (1) Protective equipment members were prepared in the same manner as in Invention Example 1, except that the following epoxy prepreg (K735EP) was used instead of K735UP as the prepreg, and the heating and pressurizing conditions were 170°C, 20Kg/cm 2 , and 45 minutes. (Example 2 of the present invention). K735EP: K735, epoxy resin [bisphenol A epoxy resin with epoxy equivalent of 450],
Epoxy prepreg with a resin content of 40% by weight impregnated with a mixture of a curing agent (dicyandiamide) and a curing accelerator (benzyldimethylamine) in a ratio of 100:3.5:1 (by weight). (2) K735EP (prepreg) is a laminate of K735 and polyethylene film (however, the number of layers is K735
A member for protective equipment was obtained in the same manner as Example 2 of the present invention, except that one sheet was stacked on each of the front and back surfaces of 8 sheets of polyethylene film and 7 sheets of polyethylene film (Example 3 of the present invention). (3) Epoxy resin film (weight 60g/
A member for a protective equipment was obtained in the same manner as in Inventive Example 2, except that 2 cm 2 ) was used (Inventive Example 4). Table 3 shows the results of performance evaluation of each of the protective equipment members obtained here.
【表】
実施例 ３
硬化層形成用のプリプレグとして、K735UPに
代えて、下記の２種のプリプレグを、第４表に示
す如く単独でもしくは組み合わせて用いるほかは
実施例１の本発明例１と同様にして、表面硬化層
の重量の異なる３種の防護具用部材を得た。
(a) K289に本発明例１と同様の不飽和ポリエス
テル樹脂を含浸した樹脂含量40重量％の不飽和
ポリエステルプリプレグ（K289UP）。
(b) K328に本発明例１と同様の不飽和ポリエス
テル樹脂を含浸した樹脂含量40重量％の不飽和
ポリエステルプリプレグ（K328UP）。
各防護具用部材について性能評価を行つた結果
を第４表に示す。[Table] Example 3 Same as Invention Example 1 of Example 1 except that the following two types of prepregs were used alone or in combination as shown in Table 4 instead of K735UP as the prepreg for forming the hardened layer. Similarly, three types of protective equipment members having different weights of hardened surface layers were obtained. (a) Unsaturated polyester prepreg (K289UP) with a resin content of 40% by weight, obtained by impregnating K289 with the same unsaturated polyester resin as in Example 1 of the present invention. (b) Unsaturated polyester prepreg (K328UP) with a resin content of 40% by weight, obtained by impregnating K328 with the same unsaturated polyester resin as in Example 1 of the present invention. Table 4 shows the performance evaluation results for each protective equipment member.
【表】
実施例 ４
実施例２の本発明例２に於いて、内層の
KE735／ポリエチレンフイルム積層物の構成
（KE735とフイルムの積層枚数）を第５表に示す
如くとするほかは、本発明例２と同様にしてそれ
ぞれ防護具用部材を得た。
それらの性能評価結果を第５表に示す。なお、
第５表には本発明例２の結果を再掲した。[Table] Example 4 In Invention Example 2 of Example 2, the inner layer
Protective equipment members were obtained in the same manner as in Invention Example 2, except that the structure of the KE735/polyethylene film laminate (the number of layers of KE735 and film laminated) was as shown in Table 5. The performance evaluation results are shown in Table 5. In addition,
In Table 5, the results of Inventive Example 2 are listed again.
【表】
実施例 ５
表面硬化層形成用のプリプレグとして、K1033
に実施例１と同様の不飽和ポリエステル樹脂を含
浸した樹脂量40重量％の不飽和ポリエステルプリ
プレグ（K1033UP）を、また内層用の織物とし
て同じくK1033を用いるほかは実施例１の本発明
例１と同様にして防護具用部材を調製した（本発
明例10）。
またこの時、内層用の接着剤を第６表の如く
種々変えて、防護具用部材を調製し、それらの性
能を比較した。結果を第６表に示す。[Table] Example 5 K1033 as a prepreg for forming a hardened surface layer
Inventive Example 1 of Example 1 except that an unsaturated polyester prepreg (K1033UP) with a resin amount of 40% by weight was impregnated with the same unsaturated polyester resin as in Example 1, and K1033 was also used as the fabric for the inner layer. A protective equipment member was prepared in the same manner (Inventive Example 10). At this time, members for protective equipment were prepared using various adhesives for the inner layer as shown in Table 6, and their performances were compared. The results are shown in Table 6.
【表】
この結果から、本発明の防護具用部材に於いて
内層部（織物接合層）の織物はその全面で接着さ
れていることが重要であることが判る。[Table] From these results, it is clear that in the protective equipment member of the present invention, it is important that the inner layer portion (fabric bonding layer) of the fabric is bonded over its entire surface.
Claims (1)
繊維使いの織物を多層積層した構造からなり、そ
の表裏両外層部の少なくとも一方の織物は熱硬化
性樹脂によつて含浸、硬化されており、残余の織
物は接着剤により相互にかつ実質的にその全面で
接合されていることを特徴とする防護具用部材。 ２ 積層織物の総重量が3500〜5000ｇ／m2であ
り、そのうち表裏両外層部の少なくとも一方の
200〜1000ｇ／m2相当の織物が熱硬化性樹脂によ
つて含浸、硬化されている特許請求の範囲第１項
に記載の防護具用部材。 ３ 外層部の硬化部分に於ける熱硬化性樹脂の量
が、織物と樹脂の合計量に対して30〜60重量％の
範囲にある特許請求の範囲第１項または第２項に
記載の防護具用部材。 ４ 熱硬化性樹脂がエポキシ樹脂、不飽和ポリエ
ステル樹脂、ビニルエステル樹脂もしくはフエノ
ール樹脂である特許請求の範囲第１項ないし第３
項のいずれかに記載の防護具用部材。 ５ 織物接合部分に於いて、各織物同志は一層の
織物重量の５〜15重量％に相当する量の接着剤に
よつて接合されている特許請求の範囲第１項に記
載の防護具用部材。 ６ 接着剤が低融点熱可塑性樹脂からなるもので
ある特許請求の範囲第１項または第５項に記載の
防護具用部材。 ７ 低融点熱可塑性樹脂がポリエチレンである特
許請求の範囲第６項に記載の防護具用部材。 ８ 引張り強さ20ｇ／ｄ以上の高強度有機合成繊
維がパラ系芳香族ポリアミド繊維である特許請求
の範囲第１項に記載の防護具用部材。 ９ 引張り強さが20ｇ／ｄ以上の高強度有機合成
繊維使いの織物の複数枚を、フイルム状接着剤を
介して積層したものの上下のいずれか一方もしく
は双方に、同じく引張り強さが20ｇ／ｄ以上の高
強度有機合成繊維使いの織物に熱硬化性樹脂を含
浸してなるプリプレグを重ね合わせ、これを加熱
加圧してプリプレグの硬化とフイルム状接着剤に
よる熱接着とを行わしめることを特徴とする防護
具用部材の製造方法。[Scope of Claims] 1. Consisting of a multi-layered structure of fabrics made of high-strength organic synthetic fibers with a tensile strength of 20 g/d or more, at least one of the outer layers on the front and back sides is made of thermosetting resin. 1. A member for protective equipment, characterized in that it has been impregnated and cured, and the remaining fabrics are joined to each other and substantially over their entire surface by an adhesive. 2 The total weight of the laminated fabric is 3,500 to 5,000 g/ m2 , of which at least one of the front and back outer layers is
2. The member for protective equipment according to claim 1, wherein the fabric weighing 200 to 1000 g/m 2 is impregnated and cured with a thermosetting resin. 3. Protection according to claim 1 or 2, wherein the amount of thermosetting resin in the hardened portion of the outer layer is in the range of 30 to 60% by weight based on the total amount of the fabric and resin. Tool parts. 4 Claims 1 to 3 in which the thermosetting resin is an epoxy resin, an unsaturated polyester resin, a vinyl ester resin, or a phenol resin
A member for protective equipment according to any of paragraphs. 5. The member for protective equipment according to claim 1, wherein the woven fabrics are joined together at the woven fabric joint portion with an adhesive in an amount corresponding to 5 to 15% by weight of the weight of one layer of woven fabric. . 6. The protective equipment member according to claim 1 or 5, wherein the adhesive is made of a low melting point thermoplastic resin. 7. The protective equipment member according to claim 6, wherein the low melting point thermoplastic resin is polyethylene. 8. The protective equipment member according to claim 1, wherein the high-strength organic synthetic fiber having a tensile strength of 20 g/d or more is a para-aromatic polyamide fiber. 9 Multiple sheets of woven fabric made of high-strength organic synthetic fibers with a tensile strength of 20 g/d or more are laminated via a film adhesive, and either or both of the top and bottom have a tensile strength of 20 g/d or more. A prepreg made by impregnating a thermosetting resin with the fabric made of the above-mentioned high-strength organic synthetic fibers is superimposed, and this is heated and pressed to cure the prepreg and thermally bond it with a film adhesive. A method for manufacturing a member for protective equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15223286A JPS635937A (en) | 1986-06-27 | 1986-06-27 | Member for protection tool and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15223286A JPS635937A (en) | 1986-06-27 | 1986-06-27 | Member for protection tool and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS635937A JPS635937A (en) | 1988-01-11 |
| JPH0481941B2 true JPH0481941B2 (en) | 1992-12-25 |
Family
ID=15535974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15223286A Granted JPS635937A (en) | 1986-06-27 | 1986-06-27 | Member for protection tool and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS635937A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019058599A1 (en) * | 2017-09-22 | 2019-03-28 | 日本毛織株式会社 | Stab-proof laminate and stab-proof implement using same, and nonwoven fabric for stab-proof implement |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8829063D0 (en) * | 1988-12-13 | 1989-01-25 | British Telecomm | Predictive coding and decoding |
| JP4844908B2 (en) * | 2010-03-29 | 2011-12-28 | 東レ株式会社 | Impact resistant fiber reinforced plastic and multilayer structure |
| CN102933652A (en) * | 2010-06-11 | 2013-02-13 | 纳幕尔杜邦公司 | Polymeric blends useful in ballistic applications |
| JP7242358B2 (en) * | 2019-03-15 | 2023-03-20 | 東レ株式会社 | Composite materials, laminates and protective articles using them |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4181768A (en) * | 1974-10-31 | 1980-01-01 | E. I. Du Pont De Nemours And Company | Body armor laminate |
| US4457985A (en) * | 1982-03-19 | 1984-07-03 | Allied Corporation | Ballistic-resistant article |
| JPS5928838U (en) * | 1982-08-18 | 1984-02-22 | 松下電器産業株式会社 | reel stand |
| JPS60178296A (en) * | 1984-02-24 | 1985-09-12 | 東洋紡績株式会社 | Bulletproof article |
| JPS61101799A (en) * | 1984-10-22 | 1986-05-20 | 株式会社 白山製作所 | Substrate for protective tool |
-
1986
- 1986-06-27 JP JP15223286A patent/JPS635937A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019058599A1 (en) * | 2017-09-22 | 2019-03-28 | 日本毛織株式会社 | Stab-proof laminate and stab-proof implement using same, and nonwoven fabric for stab-proof implement |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS635937A (en) | 1988-01-11 |
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