JP2923306B2 - Helmet - Google Patents
HelmetInfo
- Publication number
- JP2923306B2 JP2923306B2 JP1203133A JP20313389A JP2923306B2 JP 2923306 B2 JP2923306 B2 JP 2923306B2 JP 1203133 A JP1203133 A JP 1203133A JP 20313389 A JP20313389 A JP 20313389A JP 2923306 B2 JP2923306 B2 JP 2923306B2
- Authority
- JP
- Japan
- Prior art keywords
- helmet
- resin
- layer
- strength
- reinforced
- 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
Links
- 229920005989 resin Polymers 0.000 claims description 37
- 239000011347 resin Substances 0.000 claims description 37
- 239000000835 fiber Substances 0.000 claims description 28
- 239000003365 glass fiber Substances 0.000 claims description 24
- 239000004744 fabric Substances 0.000 claims description 21
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 17
- 238000010521 absorption reaction Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 8
- 229920001187 thermosetting polymer Polymers 0.000 claims description 7
- 230000035699 permeability Effects 0.000 claims description 4
- 239000010410 layer Substances 0.000 description 24
- 230000035515 penetration Effects 0.000 description 16
- 239000004698 Polyethylene Substances 0.000 description 11
- -1 polyethylene Polymers 0.000 description 11
- 229920000573 polyethylene Polymers 0.000 description 11
- 102100040287 GTP cyclohydrolase 1 feedback regulatory protein Human genes 0.000 description 7
- 101710185324 GTP cyclohydrolase 1 feedback regulatory protein Proteins 0.000 description 7
- 230000035939 shock Effects 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 5
- 239000002759 woven fabric Substances 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920006337 unsaturated polyester resin Polymers 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 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
- 229920002978 Vinylon Polymers 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 238000007589 penetration resistance test Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/06—Impact-absorbing shells, e.g. of crash helmets
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、人体の頭部に与えられる衝撃を緩和して障
害から保護するヘルメットに関し、特に耐貫通性及び衝
撃吸収性が優れ、軽量且つ安価で優れた防護性能を発揮
するヘルメットに関するものである。Description: TECHNICAL FIELD The present invention relates to a helmet that alleviates the impact given to the head of a human body and protects it from obstacles. The present invention relates to a helmet that is inexpensive and has excellent protection performance.
［従来の技術］ 安全ヘルメット、殊に単車用ヘルメットとしてはガラ
ス繊維強化熱硬化性樹脂製（以下、GFRP製という）のも
のが汎用されているが、最近、ライダー装備のファッシ
ョン化が進むにつれて単車用ヘルメットも高級化してき
ており、且つ安全性向上の期待もあって徐々に大型化す
る傾向が見られる。ところがGFRPは比較的高重量である
ため大型化には限界がある。そこで軽量化を目的とし
て、高強力，高弾性率のアラミド繊維および汎用有機繊
維（ビニロン繊維等）等を強化材として併用し、ガラス
繊維の使用量を少なくすることにより軽量大型化を図っ
たFRP製ヘルメットが既に市販されている。[Prior art] As a safety helmet, especially a helmet for a motorcycle, a helmet made of glass fiber reinforced thermosetting resin (hereinafter, referred to as GFRP) is widely used. Helmets have also been upgraded, and there is a tendency to gradually increase in size due to expectations for improved safety. However, since GFRP is relatively heavy, there is a limit to its size. For the purpose of weight reduction, high strength and high elasticity aramid fiber and general-purpose organic fiber (vinylon fiber etc.) are used together as a reinforcing material, and the weight and size of the FRP is reduced by reducing the amount of glass fiber used. Helmets are already on the market.
［発明が解決しようとする課題］ ところがこの種の単車用ヘルメットは、従来のGFRP製
ヘルメットと比較しても遜色のない耐衝撃性や耐貫通性
を有しており、且つ軽量大型化の要請にも適合し得るも
のであるが、高価な繊維素材を大量に使用するため高価
につくと言う欠点があった。[Problems to be Solved by the Invention] However, this type of motorcycle helmet has impact resistance and penetration resistance comparable to that of a conventional GFRP helmet, and demands for a larger and lighter helmet. However, there is a drawback that it is expensive because a large amount of expensive fiber material is used.
本発明はこの様な問題点を解決しようとしてなされた
ものであって、その目的は、優れた耐貫通性および衝撃
吸収性を有し、且つ軽量大型でしかも安価なヘルメット
を提供しようとするものである。The present invention has been made to solve such problems, and an object thereof is to provide a lightweight, large, and inexpensive helmet having excellent penetration resistance and shock absorption. It is.
［課題を解決するための手段］ 上記課題を解決することのできた本発明ヘルメットガ
ラス繊維強化熱硬化性樹脂を主たる構成成分とするヘル
メットにおいて、該ヘルメットにおける少なくともJIS
T 8133（1982）で規定される衝撃吸収性試験の試験実施
範囲は、外層をガラス繊維層、内層を高強力・高弾性率
ポリエチレン繊維布帛層で強化してなり、且つ該高強力
・高弾性率ポリエチレン繊維布帛層の樹脂浸透率は、12
0℃の成型温度条件下で含浸樹脂液を0.2g布帛上に滴下
したときに、該樹脂液の鏡面が消失するまでに当該樹脂
が硬化し、内部まで完全に浸透しないものであるところ
に要旨を有するものである。[Means for Solving the Problems] In a helmet mainly comprising glass fiber reinforced thermosetting resin of the helmet of the present invention capable of solving the above problems, at least JIS
The test execution range of the shock absorption test specified in T 8133 (1982) is that the outer layer is reinforced with a glass fiber layer, the inner layer is reinforced with a high-strength, high-modulus polyethylene fiber fabric layer, and the high-strength, high-elasticity Resin penetration rate of polyethylene fiber fabric layer is 12
When 0.2 g of the impregnated resin liquid is dropped on the cloth under the molding temperature condition of 0 ° C., the resin is cured by the time the mirror surface of the resin liquid disappears and does not completely penetrate into the inside. It has.
［作用］ 上記の様に本発明のヘルメットはGFRP材を主たる構成
々分としてヘルメット本体を構成し、該ヘルメットにお
いて最も優れた耐貫通性及び衝撃吸収性が要求される領
域、即ち少なくともJIS T 8133（1982）で規定される衝
撃吸収性試験範囲（以下、JIS規格範囲という）の内面
側に、高強力・高弾性率ポリエチレン繊維布帛を含むガ
ラス繊維強化熱硬化性樹脂層を配設して強化したもので
あり、高強力・高弾性率ポリエチレン繊維布帛の有する
優れた強化作用によってヘルメットの耐貫通性及び衝撃
吸収性は著しく改善され、比較的軽量で且つ防護効果の
優秀なヘルメットを得ることができる。[Operation] As described above, the helmet of the present invention constitutes a helmet body mainly composed of GFRP material, and a region where the most excellent penetration resistance and shock absorption are required in the helmet, that is, at least JIS T 8133. A glass fiber reinforced thermosetting resin layer containing a high-strength, high-modulus polyethylene fiber cloth is reinforced on the inner surface of the shock absorption test range (hereinafter referred to as the JIS standard range) specified in (1982). The high strength and high modulus polyethylene fiber cloth has an excellent reinforcing effect that significantly improves the penetration resistance and shock absorption of the helmet, and makes it possible to obtain a helmet that is relatively lightweight and has an excellent protective effect. it can.
本発明において上記繊維強化材（ガラス繊維及びポリ
エチレン繊維）のマトリックス成分となる熱硬化性樹脂
としては、汎用のFRP材製造用熱硬化性樹脂が何れも支
障なく使用できるが、最も一般的なのは不飽和ポリエス
テル樹脂、エポキシ樹脂、ポリウレタン樹脂、ビニルエ
ステル樹脂等であり、これらは単独で使用してもよく、
あるいは必要により２種以上を併用することもできる。In the present invention, as the thermosetting resin serving as the matrix component of the fiber reinforcing material (glass fiber and polyethylene fiber), any general-purpose thermosetting resin for producing a FRP material can be used without any problem. Saturated polyester resin, epoxy resin, polyurethane resin, vinyl ester resin, etc., these may be used alone,
Alternatively, if necessary, two or more kinds can be used in combination.
次にヘルメット本体の強化材として用いられるガラス
繊維は、一般にはＥ・ガラスと称されている電気絶縁性
・化学耐久性ガラス繊維が使用されるが、勿論これに限
定されるものではない。又使用形態としては予めヘルメ
ット状に賦形化されたプリフォーム・セット及びチップ
ド・ストランドマットが使用される。この場合、本発明
は後述する高強力・高弾性率ポリエチレン繊維を用い
て、あまり重量を高めないで耐貫通性等を改善するとこ
ろに特徴を有するものであるから、使用するガラス繊維
の量は従来例に比べて少なめに抑えられる。Next, as a glass fiber used as a reinforcing material of the helmet body, an electrically insulating and chemically durable glass fiber generally called E. glass is used, but is not limited to this. Further, as a use form, a preform set and a tipped strand mat preformed into a helmet shape are used. In this case, the present invention is characterized by using a high-strength high-modulus polyethylene fiber to be described later and improving the penetration resistance and the like without increasing the weight so much. It can be suppressed to a small extent as compared with the conventional example.
そして該ヘルメット本体の内面側に配設される高強力
・高弾性率ポリエチレン繊維布帛は、ガラス繊維強化熱
硬化性樹脂層だけでは満足することのできない耐貫通性
及び衝撃吸収性を補い、あまり高重量化させないで優れ
た防護効果を得るために用いられるものであり、該ポリ
エチレン繊維に求められる強力及び弾性率は、その目的
に照らして引張強度が20g/d以上、より好ましくは25g/d
以上、引張弾性率が500g/d以上、より好ましくは1000g/
d以上のものがよい。布帛の形態も不織布及び織布の如
何を問わないが、布帛の方が耐貫通性改善効果は大き
い。織布組織にも平織、朱子織、綾織、バスケット織等
様々の種類があり、いずれも使用できるが、ヘルメット
製造時の型添え性を考慮すると朱子織が最も好ましい。
また該ポリエチレン繊維布帛の目付量は、目標とする耐
貫通性能等や製品重量及びコストを考慮して適宜定めれ
ばよく、通常は200〜1000g/m2の範囲の単層あるいは複
数枚の積層体として使用される。しかし同一目付量で比
較すると、積層体とした方が耐貫通性は優れたものとな
る。また該繊維布帛の樹脂浸透性は、成形温度条件（通
常120℃前・後）のもとで含浸樹脂液を0.2〜0.3g布帛上
に滴下したときに、樹脂液の鏡面が消失するまでに当該
樹脂が硬化し内部まで完全に浸透しない程度のものであ
ることが望まれる。その理由は、浸透性が良すぎて樹脂
が繊維布帛内へ完全に浸透して一体化すると、耐貫通性
が低下するからである。The high-strength, high-modulus polyethylene fiber cloth disposed on the inner surface side of the helmet body compensates for penetration resistance and shock absorption that cannot be satisfied only with the glass fiber reinforced thermosetting resin layer, and has a very high strength. It is used to obtain an excellent protective effect without increasing the weight, and the strength and elastic modulus required for the polyethylene fiber have a tensile strength of at least 20 g / d, more preferably 25 g / d in light of the purpose.
Above, the tensile modulus is 500 g / d or more, more preferably 1000 g / d.
d or more is better. The form of the fabric is not limited to a non-woven fabric or a woven fabric, but the fabric has a greater effect of improving penetration resistance. There are various types of woven fabrics such as plain weave, satin weave, twill weave, basket weave, and any of them can be used. However, satin weave is most preferable in consideration of moldability during helmet manufacture.
The basis weight of the polyethylene fiber fabric may be appropriately determined in consideration of the penetration resistance and the like, product weight and cost of the target, usually a stack of single layer or a plurality of ranges of 200 to 1000 g / m 2 Used as body. However, when compared at the same basis weight, the laminate has better penetration resistance. In addition, the resin permeability of the fiber cloth is determined by the fact that when 0.2 to 0.3 g of the impregnated resin liquid is dropped on the cloth under molding temperature conditions (usually before and after 120 ° C.), the mirror surface of the resin liquid disappears. It is desired that the resin is cured and does not completely penetrate into the interior. The reason is that if the resin has a good permeability and the resin completely penetrates and integrates into the fiber cloth, the penetration resistance decreases.
この様に本発明では、ヘルメットにおいて最も強度の
要求されるJIS規格範囲が、外層をガラス繊維層、内層
を高強力・高弾性率ポリエチレン繊維布帛層で強化して
なるところに最大の特徴があるが、この様なヘルメット
では、内面側に穿孔、切削等の仕上げ加工を施すとき
に、ポリエチレン繊維が完全に切断されないでひげ状に
露出することがある。しかしこのポリエチレン繊維布帛
強化樹脂層の内面側に、内面仕上げ層として薄肉のガラ
ス繊維強化樹脂層を形成しておけば、上記の様な仕上げ
加工時の問題もなくなるので好ましい。尚、高強力・高
弾性率ポリエチレン繊維布帛をヘルメットの外面側へ配
置して強化することも可能であるが、この場合は耐貫通
性が劣るので好ましくない また本発明では、ヘルメットの内面全体を高強力・高
弾性率ポリエチレン繊維布帛で強化してもよいが、最も
優れた性能の要求される前記JIS規格範囲を集中的に補
強するだけで所期の目的は十分達成されるし、コスト面
でも有利である。またヘルメットの縁部については、仕
上げカット性を考慮するならばむしろ該強化繊維布帛を
配設しない方がよく、これによって防護性能上の問題を
起こす様なことはない。As described above, in the present invention, the JIS standard range in which the highest strength is required in a helmet is characterized by the fact that the outer layer is reinforced with a glass fiber layer and the inner layer is reinforced with a high-strength, high-modulus polyethylene fiber cloth layer. However, in such a helmet, when the inner surface is subjected to finish processing such as perforation or cutting, the polyethylene fiber may not be completely cut and may be exposed in a beard shape. However, it is preferable to form a thin glass fiber reinforced resin layer as an inner surface finishing layer on the inner surface side of the polyethylene fiber cloth reinforced resin layer, since the above-mentioned problem at the time of finishing is eliminated. It is also possible to arrange a high-strength, high-modulus polyethylene fiber cloth on the outer surface side of the helmet to reinforce it, but in this case, it is not preferable because the penetration resistance is poor. Although it may be reinforced with a high-strength, high-modulus polyethylene fiber cloth, the intended purpose is sufficiently achieved only by intensively reinforcing the JIS standard range where the most excellent performance is required. But it is advantageous. In addition, it is better not to provide the reinforcing fiber fabric for the edge portion of the helmet in consideration of the finish cut property, and this does not cause a problem in the protective performance.
［実施例］ 実施例１ 繊度1600d、引張強度30g/d、引張弾性率1100g/dの高
強力・高弾性率ポリエチレン繊維（ダイニーマ・ジャパ
ン社製、商品名「ダイニーマSK−60」）を使用し、糊付
け後経糸密度18本／インチ、緯糸密度14本／インチの５
枚朱子を製織し強化織布とした。織目付量は248g/m2で
あった。また樹脂浸透性は、成形温度条件（120℃前・
後）のもとで含浸樹脂液を0.2〜0.3g布帛上に滴下した
ときに、樹脂液の鏡面が消失するまでに当該樹脂が硬化
し、内部まで完全に浸透しない程度のものである。[Example] Example 1 A high-strength, high-modulus polyethylene fiber having a fineness of 1600 d, a tensile strength of 30 g / d, and a tensile modulus of 1100 g / d (trade name “Dyneema SK-60” manufactured by Dyneema Japan) is used. 5 after warping with a warp density of 18 threads / inch and a weft density of 14 threads / inch
Wet sash was made into a reinforced woven fabric. The textured amount was 248 g / m 2 . In addition, the resin permeability depends on the molding temperature conditions (120 ° C before
When 0.2 to 0.3 g of the impregnated resin liquid is dropped on the cloth under (after), the resin is cured before the mirror surface of the resin liquid disappears and does not completely penetrate into the interior.
ヘルメットの成形に当たっては、115℃程度に加熱さ
れた雌金型内にガラス繊維プリフォームセットを装填
し、内面側に第１〜３図（第１図は概略底面図、第２図
は概略側面図、第３図は強化部の概略断面図であり、１
はヘルメット本体、２はポリエチレン強化樹脂層とガラ
ス繊維樹脂層の複合強化領域、３はGFRP層、４はポリエ
チレン強化樹脂層を夫々示す）に示す様な配置で少なく
ともJIS規格範囲の内面側に上記強化織布を２枚重ねて
積層し、更に最内層に薄いガラス繊維マットを当てがっ
た。In molding a helmet, a glass fiber preform set is loaded into a female mold heated to about 115 ° C., and the inner side is shown in FIGS. 1 to 3 (FIG. 1 is a schematic bottom view, FIG. 2 is a schematic side view). FIG. 3 is a schematic sectional view of the reinforcing portion, and FIG.
Is a helmet body, 2 is a composite reinforced area of a polyethylene reinforced resin layer and a glass fiber resin layer, 3 is a GFRP layer, and 4 is a polyethylene reinforced resin layer). Two reinforced woven fabrics were stacked and laminated, and a thin glass fiber mat was applied to the innermost layer.
次いで不飽和ポリエステル樹脂100部に対し、ベンゾ
イルパーオキサイドペースト（50％）を1.5部配合した
樹脂液を金型内に注入し、直ちに雌・雄金型を締め付け
115℃で10分間加圧形成して樹脂を硬化せしめ、710gの
大型ジェット型ヘルメット帽体を製造した。Next, a resin solution containing 1.5 parts of benzoyl peroxide paste (50%) per 100 parts of unsaturated polyester resin is injected into the mold, and the female and male molds are immediately tightened.
The resin was cured by press forming at 115 ° C. for 10 minutes to produce a large jet type helmet cap of 710 g.
このヘルメットについて、JIS T 8133のＣ種に準拠し
て耐貫通性試験及び衝撃吸収試験を行なったところ、い
ずれの規格にも合格した。When the helmet was subjected to a penetration resistance test and an impact absorption test in accordance with Class C of JIS T 8133, it passed all the standards.
比較例１ 実施例１で使用したのと同じ高強力・高弾性率ポリエ
チレン繊維及びガラス繊維プリフォームセット及び樹脂
を使用し、ガラス繊維プリフォームセットの外面側に高
強力・高弾性率ポリエチレン繊維層を形成すると共に、
その最外面側に薄いガラス繊維マットを薄く当てがった
ほかは実施例１と同様にして710gのヘルメットを作製し
た。Comparative Example 1 The same high-strength, high-modulus polyethylene fiber and glass fiber preform set and resin as used in Example 1 were used, and a high-strength, high-modulus polyethylene fiber layer was formed on the outer surface of the glass fiber preform set. Together with
A 710 g helmet was prepared in the same manner as in Example 1 except that a thin glass fiber mat was applied thinly on the outermost surface side.
このヘルメットを実施例１と同様の性能試験に供した
ところ、衝撃吸収性の規格には合格したが耐貫通性の規
格には不合格であった。When this helmet was subjected to the same performance test as in Example 1, the helmet passed the impact absorption standard but failed the penetration resistance standard.
比較例２ 高強力・高弾性率ポリエチレン繊維強化織布による強
化を省略し、ガラス繊維強化不飽和ポリエステル樹脂の
みによってヘルメットを作製した。その場合１つはガラ
ス繊維の使用量を増やして重さ920gのものを得、もう１
つは軽量化のためガラス繊維の使用量を若干少なくして
重さ850gのものを得た。Comparative Example 2 A helmet was made using only glass fiber reinforced unsaturated polyester resin without reinforcing with a high-strength, high-modulus polyethylene fiber-reinforced woven fabric. In that case, one is to increase the amount of glass fiber used to obtain a weight of 920 g,
In the first case, a glass fiber with a weight of 850 g was obtained by slightly reducing the amount of glass fiber used for weight reduction.
得られた各ヘルメットについて同様の性能試験を行な
ったところ、前者は耐貫通性及び衝撃吸収性とも規格に
合格したが、実施例のヘルメットに比べて非常に重く、
一方後者のヘルメットは若干軽量化されているものの耐
貫通性の規格に不合格であった。When the same performance test was performed on each of the obtained helmets, the former passed the standards in both the penetration resistance and the shock absorption, but was much heavier than the helmet of the example,
On the other hand, the latter helmet was slightly lighter, but failed the penetration resistance standard.
［発明の効果］ 本発明は以上の様に構成されており、GFRP製ヘルメッ
トの少なくともJIS規格範囲を高強力・高弾性率ポリエ
チレン繊維で強化することにより、軽量且つ安価でしか
も耐貫通性及び衝撃吸収性の優れた大型ヘルメットを提
供し得ることになった。[Effects of the Invention] The present invention is configured as described above. By reinforcing at least the JIS standard range of a GFRP helmet with high-strength and high-modulus polyethylene fibers, it is lightweight, inexpensive, and has penetration resistance and impact resistance. It is possible to provide a large helmet with excellent absorbency.
第1,2図は実施例で得たヘルメットの概略底面図及び概
略側面図、第３図はポリエチレン繊維強化部分の概略断
面図である。 １……ヘルメット本体 ２……ポリエチレン繊維強化層とガラス繊維樹脂層の複
合強化領域 ３……GFRP層 ４……ポリエチレン強化樹脂層1 and 2 are a schematic bottom view and a schematic side view of a helmet obtained in an example, and FIG. 3 is a schematic sectional view of a polyethylene fiber reinforced portion. 1. Helmet body 2. Composite reinforced area of polyethylene fiber reinforced layer and glass fiber resin layer 3. GFRP layer 4. Polyethylene reinforced resin layer
フロントページの続き (56)参考文献 特開 昭56−96905（ＪＰ，Ａ) 特開 昭61−138706（ＪＰ，Ａ) 実開 昭63−140027（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) A42B 3/06 Continuation of the front page (56) References JP-A-56-96905 (JP, A) JP-A-61-138706 (JP, A) JP-A-63-140027 (JP, U) (58) Fields investigated (Int) .Cl. 6 , DB name) A42B 3/06
Claims (1)
成分とするヘルメットにおいて、 該ヘルメットにおける少なくともJIS T 8133（1982）で
規定される衝撃吸収性試験の試験実施範囲は、外層をガ
ラス繊維層、内層を高強力・高弾性率ポリエチレン繊維
布帛層で強化してなり、 且つ該高強力・高弾性率ポリエチレン繊維布帛層の樹脂
浸透性は、120℃の成型温度条件下で含浸樹脂液を0.2g
布帛上に滴下したときに、該樹脂液の鏡面が消失するま
でに当該樹脂が硬化し、内部まで完全に浸透しないもの
であることを特徴とする繊維強化樹脂製ヘルメット。1. A helmet containing a glass fiber reinforced thermosetting resin as a main component, wherein the outer layer is made of a glass fiber layer at least in an impact absorption test specified in JIS T 8133 (1982). The inner layer is reinforced with a high-strength, high-modulus polyethylene fiber cloth layer, and the resin permeability of the high-strength, high-modulus polyethylene fiber cloth layer is such that the impregnated resin liquid is 0.2 wt. g
A helmet made of fiber reinforced resin, wherein the resin hardens by the time the mirror surface of the resin liquid disappears when dropped on a fabric, and does not completely penetrate into the interior.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1203133A JP2923306B2 (en) | 1989-08-05 | 1989-08-05 | Helmet |
| US07/560,995 US5075904A (en) | 1989-08-05 | 1990-08-01 | Helmet with reinforcement |
| EP19900114952 EP0412452A3 (en) | 1989-08-05 | 1990-08-03 | Helmet |
| KR1019900011986A KR910004131A (en) | 1989-08-05 | 1990-08-04 | helmet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1203133A JP2923306B2 (en) | 1989-08-05 | 1989-08-05 | Helmet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0369603A JPH0369603A (en) | 1991-03-26 |
| JP2923306B2 true JP2923306B2 (en) | 1999-07-26 |
Family
ID=16468961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1203133A Expired - Lifetime JP2923306B2 (en) | 1989-08-05 | 1989-08-05 | Helmet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2923306B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0521982U (en) * | 1991-09-10 | 1993-03-23 | 住友ゴム工業株式会社 | Sports competition hat |
| US9631898B2 (en) * | 2007-02-15 | 2017-04-25 | Honeywell International Inc. | Protective helmets |
| US8853105B2 (en) * | 2007-12-20 | 2014-10-07 | Honeywell International Inc. | Helmets for protection against rifle bullets |
| US9163335B2 (en) * | 2011-09-06 | 2015-10-20 | Honeywell International Inc. | High performance ballistic composites and method of making |
| CN115181405B (en) * | 2022-08-12 | 2024-01-12 | 琉璃河防护科技(大连)有限公司 | High-protection impact-resistant cap and processing technology thereof |
-
1989
- 1989-08-05 JP JP1203133A patent/JP2923306B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0369603A (en) | 1991-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4550044A (en) | Ballistic resistant armor panel and method of constructing the same | |
| US5075904A (en) | Helmet with reinforcement | |
| EP0650333B1 (en) | Safety helmets | |
| US9572387B2 (en) | Helmet edge band | |
| JPH0823095B2 (en) | Reinforcing fiber fabric | |
| JPH05507635A (en) | Baseball composite bat | |
| JP3737925B2 (en) | Laminated structure of the cap body in the helmet | |
| JP2923306B2 (en) | Helmet | |
| US2766453A (en) | Plastic impregnated fabric material and method for making same | |
| JPH07198299A (en) | Bullet-proof shield and bullet-proof helmet | |
| EP0188747B1 (en) | Caps of composite material for personal protection, such as helmets and the like | |
| JP2831711B2 (en) | Helmet | |
| KR102629704B1 (en) | Golf club head | |
| JP2831710B2 (en) | Helmet made of fiber reinforced resin | |
| JP2006320529A (en) | Bat and cap for ball game | |
| JPH0577368A (en) | Impact-resistant permeable laminate | |
| JPH07241846A (en) | Preform and production of the same | |
| JPH08269809A (en) | Helmet | |
| JPH0978331A (en) | Safety helmet | |
| JP3558177B2 (en) | Helmet | |
| JPS635937A (en) | Member for protection tool and manufacture thereof | |
| JPH0941213A (en) | Helmet | |
| WO2002043949A2 (en) | Contour rigid composite structure and method | |
| JP2000160423A (en) | Composition helmet | |
| JPH068971Y2 (en) | Helmet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090430 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090430 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100430 Year of fee payment: 11 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100430 Year of fee payment: 11 |