JPH0487855A - Bumper beam and manufacture thereof - Google Patents
Bumper beam and manufacture thereofInfo
- Publication number
- JPH0487855A JPH0487855A JP2201684A JP20168490A JPH0487855A JP H0487855 A JPH0487855 A JP H0487855A JP 2201684 A JP2201684 A JP 2201684A JP 20168490 A JP20168490 A JP 20168490A JP H0487855 A JPH0487855 A JP H0487855A
- Authority
- JP
- Japan
- Prior art keywords
- bumper beam
- fiber
- elongated structure
- manufacturing
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 23
- 239000012783 reinforcing fiber Substances 0.000 claims abstract description 39
- 229920005992 thermoplastic resin Polymers 0.000 claims abstract description 20
- 239000011342 resin composition Substances 0.000 claims abstract description 19
- 239000000835 fiber Substances 0.000 claims abstract description 17
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 8
- 239000000057 synthetic resin Substances 0.000 claims abstract description 8
- -1 polypropylene Polymers 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 22
- 239000004743 Polypropylene Substances 0.000 claims description 10
- 239000003365 glass fiber Substances 0.000 claims description 10
- 229920001155 polypropylene Polymers 0.000 claims description 10
- 239000008188 pellet Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 6
- 239000004952 Polyamide Substances 0.000 claims description 5
- 229920002647 polyamide Polymers 0.000 claims description 5
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 5
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000155 melt Substances 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 2
- 238000000748 compression moulding Methods 0.000 abstract description 18
- 238000000465 moulding Methods 0.000 abstract description 17
- 229920005989 resin Polymers 0.000 abstract description 17
- 239000011347 resin Substances 0.000 abstract description 17
- 238000002347 injection Methods 0.000 abstract description 12
- 239000007924 injection Substances 0.000 abstract description 12
- 238000001746 injection moulding Methods 0.000 abstract description 12
- 239000000126 substance Substances 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 230000003014 reinforcing effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000013585 weight reducing agent Substances 0.000 description 4
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 239000002216 antistatic agent Substances 0.000 description 2
- 239000004760 aramid Substances 0.000 description 2
- 229920006231 aramid fiber Polymers 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 239000004014 plasticizer Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000003381 stabilizer Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003484 crystal nucleating agent Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 239000012756 surface treatment agent Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、主として繊維で強化された熱可塑性樹脂から
なるバンパービーム（ハンクアｙ ７’ビーム、バンパ
ーレインフォースメント等の呼称もある）およびその製
造法に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to bumper beams (sometimes called Hank Eye 7' beams, bumper reinforcements, etc.) mainly made of fiber-reinforced thermoplastic resin, and the like. Regarding manufacturing methods.
従来、自動車用のバンパービームとしては、主として金
属製のものが用いられていた。しかしながら、近年は、
自動車の燃費改善、走行性能向上環を目的として、各種
自動車部品の軽量化が求められる傾向にあり、バンパー
ビームにおいても、金属製のものではこの要求に応える
ことは難しい。また、金属製バンパービームは、加工工
程が煩雑であり、しかも錆の発生を防止するための表面
加工が必要である等、生産性の面で劣るという欠点も有
する。また、バンパーの空力抵抗、デザインの観点から
、バンパービームに課せられる種々の制約、例えば形状
の複雑化等に対し、金属製バンパービームでは対応する
のが困難な状況になりつつある。Conventionally, bumper beams for automobiles have mainly been made of metal. However, in recent years,
In order to improve the fuel efficiency and driving performance of automobiles, there is a trend to reduce the weight of various automobile parts, and it is difficult to meet this demand with bumper beams made of metal. Further, metal bumper beams have disadvantages in that they require complicated processing steps and require surface processing to prevent rust, resulting in poor productivity. Furthermore, it is becoming increasingly difficult for metal bumper beams to meet various constraints imposed on bumper beams from the viewpoint of aerodynamic resistance and design, such as increasingly complex shapes.
これに対し、特開昭６２−２４０５１４号には、スタン
パブルシートを用いスタンピング成形してなる繊維強化
樹脂製バンパービームが提案されている。これは、一方
向に引き揃えた補強用繊維と長繊維マットとの積層体に
熱可塑性樹脂を含浸させてなるスタンパブルシートをバ
ンパービームに必要なサイズに切取って金型に設置し、
これを加熱して溶融または軟化させて圧縮成形するもの
である。しかしながら、スタンパブルシートを用いたス
タンピング成形によるバンパービームでは、軽量化、耐
腐食性等の改善は可能となるものの、成形サイクルが長
く、また、パリが生じるため後加工が必要である等、生
産性、製造コストの面でなお不充分である。また、本来
シート状のものを用いるため、複雑な形状あるいは取付
は孔等を有するバンパービームに加工するのが困難であ
り、また、補強用のリブあるいはボス等を有するバンパ
ービームにおいては、リブあるいはボスの部分に繊維が
充填しにくいため、リブとしての補強効果あるいはボス
としての機能が充分に発揮されない等の欠点を有する。On the other hand, Japanese Patent Application Laid-Open No. 62-240514 proposes a fiber-reinforced resin bumper beam formed by stamping using a stampable sheet. This is done by cutting a stampable sheet made of a laminate of reinforcing fibers aligned in one direction and a long fiber mat impregnated with thermoplastic resin into the size required for the bumper beam, and placing it in a mold.
This is heated to melt or soften and then compression molded. However, although bumper beams made by stamping using stampable sheets can reduce weight and improve corrosion resistance, they require a long molding cycle and require post-processing due to the formation of cracks. However, it is still insufficient in terms of performance and manufacturing cost. In addition, since a sheet-like material is originally used, it is difficult to process a bumper beam with a complicated shape or mounting holes, etc. Also, in a bumper beam with reinforcing ribs or bosses, it is difficult to process the bumper beam with holes etc. Since it is difficult to fill the boss portion with fibers, there are drawbacks such as the reinforcing effect as a rib or the function as a boss not being fully demonstrated.
本発明者は、上記の如き従来技術の課題に鑑み、軽量か
つ高剛性で耐腐食性等にも優れたバンパービームを提供
するこ七、及びその量産性に優れた製造法を提供するこ
とを目的として鋭意検討を重ねた結果、特定の繊維強化
構造を有する長尺構造物を樹脂製バンパービーム内に存
在させることが有効であり、かかるバンパービームを量
産性に優れた射出成形、射出溶融圧縮成形または押出溶
融圧縮成形により容易に得ることができることを見出し
、本発明に到達した。In view of the above-mentioned problems with the prior art, the inventor of the present invention set out to provide a bumper beam that is lightweight, highly rigid, and has excellent corrosion resistance, and to provide a manufacturing method for the same that is excellent in mass production. As a result of intensive studies, we found that it is effective to have a long structure with a specific fiber-reinforced structure inside a resin bumper beam. The present invention was achieved by discovering that it can be easily obtained by molding or extrusion melt compression molding.
即ち、本発明は合成樹脂と１０〜８０重量％の補強用繊
維とを含有してなる繊維強化長尺構造物（Ａ）ヲ、バン
パービーム成形金型内に部分的に配置したのち、射出成
形、射出溶融圧縮成形または押出溶融圧縮成形により熱
可塑性樹脂と補強用繊維０〜８０重量％とからなる樹脂
組成物（Ｂ）の溶融物を前記金型内に充填し、前記繊維
強化長尺構造物（Ａ）が実質的に内在し一体化したノλ
ンパービームに成形することを特徴とする２０〜８０重
量％の補強用繊維を含有するバンパービームの製造法、
およびかかる製造法によって得られる一バンパービーム
に関するものである。That is, in the present invention, a fiber-reinforced elongated structure (A) containing a synthetic resin and 10 to 80% by weight of reinforcing fibers is partially placed in a bumper beam forming mold, and then injection molded. , Filling the mold with a melt of the resin composition (B) consisting of a thermoplastic resin and 0 to 80% by weight of reinforcing fibers by injection melt compression molding or extrusion melt compression molding, and forming the fiber reinforced elongated structure. λ in which the thing (A) is substantially internal and integrated
A method for producing a bumper beam containing 20 to 80% by weight of reinforcing fibers, the method comprising forming a bumper beam into a bumper beam;
and a bumper beam obtained by such a manufacturing method.
以下、本発明について詳細に説明する。The present invention will be explained in detail below.
第１図はバンパービームの１例を示す斜視略示図、第２
図は第１図の１−１線における断面略示図であり、バン
パービームの多くは概ねこれに類似し、必要に応じて補
強用リブ、ボス、支持具、取付用孔等が設けられた構造
を有する。Fig. 1 is a schematic perspective view showing one example of a bumper beam;
The figure is a schematic cross-sectional view taken along line 1-1 in Figure 1, and most bumper beams are generally similar to this, with reinforcing ribs, bosses, supports, mounting holes, etc. provided as necessary. Has a structure.
勿論、本発明によって得られるバンパービームはこれら
の形状に限定されるものではなく、本発明の特徴の１つ
である優れた成形加工性とも相まって、更に複雑な形状
のバンパービームでも製造可能である。Of course, the bumper beam obtained by the present invention is not limited to these shapes, and combined with the excellent formability, which is one of the features of the present invention, it is possible to manufacture bumper beams with even more complicated shapes. .
さて、本発明はかかる如きバンパービームを樹脂を用い
て製造するにあたり、量産性に優れた射出成形、射出溶
融圧縮成形または押出溶融圧縮成形を利用したところに
特徴がある。しかしながら単に射出成形、射出溶融圧縮
成形または押出溶融圧縮成形を利用し、従来から知られ
た熱可塑性樹脂または繊維強化熱可塑性樹脂を成形した
だけでは、軽量化と高強度の両方を満足するバンパービ
ームは得られない。The present invention is characterized in that, in manufacturing such a bumper beam using resin, injection molding, injection melt compression molding, or extrusion melt compression molding, which is excellent in mass productivity, is utilized. However, simply using injection molding, injection melt compression molding, or extrusion melt compression molding to mold conventionally known thermoplastic resins or fiber-reinforced thermoplastic resins does not provide a bumper beam that satisfies both lightweight and high strength. cannot be obtained.
そこで、本発明のもう一つの大きな特徴は、合成樹脂と
１０〜８０重量％の補強用繊維とを含有してなる繊維強
化長尺構造物（Ａ）をバンパービーム内に存在させるこ
とにより、軽量化の目的を実質上積なうことなく補強し
強度を向上させたところにある。Therefore, another major feature of the present invention is that the fiber-reinforced elongated structure (A) containing synthetic resin and 10 to 80% by weight of reinforcing fibers is present in the bumper beam, making it lightweight. The purpose of this is to reinforce and improve strength without substantially building up.
かかる繊維強化長尺構造物（Ａ）は、例えば引き抜き成
形等の方法によって製造することができ、ロービング等
の連続繊維を引きながら樹脂を含浸させれば一方向に引
き揃えられた補強用繊維を含有するものが得られ、更に
これを樹脂が溶融又は軟化状態にあるときにクロスさせ
ながら引き取ることにより補強用繊維が網状に配置され
たものとなる。又、ロービングクロス等の織物状のもの
或いはランダムマットに樹脂を含浸させることにより補
強用繊維が織物状或いはランダム状に配置されたものが
得られる。又、これらを積層することも可能である。こ
れらの繊維強化長尺構造物（Ａ）の内、特に好ましいの
は一方向に引き揃えられた補強用繊維を含有するもので
ある。Such a fiber-reinforced elongated structure (A) can be manufactured, for example, by a method such as pultrusion molding, and by impregnating continuous fibers such as roving with resin, reinforcing fibers aligned in one direction can be produced. When the resin is in a molten or softened state, the reinforcing fibers are arranged in a net shape by removing the resin while crossing it. Further, by impregnating a woven material such as roving cloth or a random mat with resin, a material in which reinforcing fibers are arranged in a woven or random manner can be obtained. It is also possible to laminate these. Among these fiber-reinforced elongated structures (A), particularly preferred are those containing reinforcing fibers aligned in one direction.
ここで用いられる合成樹脂としては特に制約はなく、熱
可塑性樹脂および熱硬化性樹脂（プレポリマー）の何れ
も使用できるが、加工性あるいは取扱いの容易さ等を考
慮すると熱可塑性樹脂を用いるのが好ましく、その具体
例としては、オレフィン系重合体（ポリエチレン、ポリ
プロピレン等）、ポリスチレン、Ａｓ Ｗｉ 脂、ＡＢ
Ｓ樹脂、アクリレート系あるいはメタクリレート系重合
体（ポリメチルメタクリレート等）、ポリアミド、ポリ
エステル（ポリエチレンテレフタレート、ポリブチレン
テレフタレート等）、ポリアセタール、ポリカーボネー
ト、ポリウレタン、ポリフェニレンサルファイド等の公
知の熱可塑性樹脂およびこれらの樹脂の変性体から選ば
れた１種または２種以上がいずれも使用できる。軽量化
、低コスト化、加工性、強度、剛性、耐腐食性等、バン
パービームに要求される緒特性を総合して考えると、ボ
（ノプロピレン、ポリエチレンテレフタレート、ポリブ
チレンテレフタレートまたはポリアミドを主体としたも
の、もしくはこれと他の熱可塑性樹脂とのアロイまたは
ブレンド物が好ましく、特に好ましいのはポリプロピレ
ンを主体としたものである。There are no particular restrictions on the synthetic resin used here, and both thermoplastic resins and thermosetting resins (prepolymers) can be used; however, in consideration of processability and ease of handling, it is preferable to use thermoplastic resins. Preferably, specific examples thereof include olefin polymers (polyethylene, polypropylene, etc.), polystyrene, AsWi fat, AB
Known thermoplastic resins such as S resin, acrylate or methacrylate polymers (polymethyl methacrylate, etc.), polyamides, polyesters (polyethylene terephthalate, polybutylene terephthalate, etc.), polyacetal, polycarbonate, polyurethane, polyphenylene sulfide, etc., and those of these resins. One or more types selected from modified products can be used. Considering the structural properties required for bumper beams, such as weight reduction, cost reduction, workability, strength, rigidity, and corrosion resistance, it is clear that the main materials used are polypropylene, polyethylene terephthalate, polybutylene terephthalate, or polyamide. or alloys or blends of this and other thermoplastic resins are preferred, and those mainly composed of polypropylene are particularly preferred.
また、配合される補強用繊維も特に限定されるものでは
ないが、−ｉ的にはガラス繊維、炭素繊維、アラミド繊
維等が用いられ、特に好ましくはコスト的にも有利なガ
ラス繊維である。Further, the reinforcing fibers to be blended are not particularly limited, but in terms of -i, glass fibers, carbon fibers, aramid fibers, etc. are used, and glass fibers are particularly preferred since they are advantageous in terms of cost.
かかる補強用繊維は公知の収束剤または表面処理剤で処
理されたものであってもよい。本発明において用いられ
る繊維強化長尺構造物（Ａ）において、かかる補強用繊
維の配合量は１０〜８０重量％（長尺構造物（Ａ）中）
である。補強用繊維の配合量が１０重量％未満では、繊
維強化長尺構造物（＾）によるバンパービームの十分な
補強効果は期待できず、軽量化と強度、剛性等の両方を
満足するバンパービームの製造は困難になる。Such reinforcing fibers may be treated with a known binding agent or surface treatment agent. In the fiber-reinforced elongated structure (A) used in the present invention, the blending amount of such reinforcing fibers is 10 to 80% by weight (in the elongated structure (A)).
It is. If the reinforcing fiber content is less than 10% by weight, the fiber-reinforced elongated structure (^) cannot be expected to have a sufficient reinforcing effect on the bumper beam, and it is difficult to create a bumper beam that satisfies both weight reduction, strength, and rigidity. Manufacturing becomes difficult.
また、補強用繊維の配合量が８０重量％を越えると繊維
強化長尺構造物（＾）自身の製造が困難になり、繊維も
剥離、飛散し易くなる。補強用繊維の配合量としては２
０〜７５重量％が好ましく、特に好ましくは３０〜７０
重量％である。Furthermore, if the amount of reinforcing fibers exceeds 80% by weight, it becomes difficult to manufacture the fiber-reinforced elongated structure (^) itself, and the fibers also tend to peel off and scatter. The blending amount of reinforcing fiber is 2
0 to 75% by weight is preferable, particularly preferably 30 to 70% by weight.
Weight%.
また、繊維強化長尺構造物（Ａ）には、一般に合成樹脂
に配合される公知の物質、例えば酸化防止剤や紫外線吸
収剤等の安定剤、難燃剤、可塑剤、結晶化促進剤、結晶
核剤、帯電防止剤、着色剤、板状あるいは粉粒状の充填
材等も目的に応じ適宜添加することも可能である。In addition, the fiber-reinforced elongated structure (A) may contain known substances that are generally blended into synthetic resins, such as stabilizers such as antioxidants and ultraviolet absorbers, flame retardants, plasticizers, crystallization promoters, crystallization promoters, etc. Nucleating agents, antistatic agents, coloring agents, plate-like or powder-like fillers, etc. can also be added as appropriate depending on the purpose.
上記の如くして得られ、本発明において用いられる繊維
強化長尺構造物（Ａ）の形状としては、バンパービーム
成形金型内に配置可能なものであれば特に制約はないが
、−船釣にはストランド状、棒状、リボン状、テープ状
またはシート状のものが使用される。The shape of the fiber-reinforced elongated structure (A) obtained as described above and used in the present invention is not particularly limited as long as it can be placed in the bumper beam forming mold. A strand-shaped, rod-shaped, ribbon-shaped, tape-shaped or sheet-shaped one is used.
次に、上記の如き繊維強化長尺構造物（Ａ）をバンパー
ビーム成形金型内に配置する。この時、繊維強化長尺構
造物（Ａ）として一方向に引き揃えられた補強用繊維を
含有するものを用いる場合においては、引き揃えられた
補強用繊維がノλンパービームの長手方向とほぼ平行と
なるように、金型内に配置するのが好ましい。また、繊
維強化長尺構造物（Ａ）がバンパービームの長手方向と
ほぼ同一長さのものであることが特に好ましい。かかる
繊維強化長尺構造物（Ａ）は、バンパービーム成形金型
内に部分的に配置される。Next, the fiber-reinforced elongated structure (A) as described above is placed in a bumper beam forming mold. At this time, when using a fiber-reinforced elongated structure (A) containing reinforcing fibers aligned in one direction, the aligned reinforcing fibers are approximately parallel to the longitudinal direction of the non-lambda beam. It is preferable to arrange it in the mold so that Furthermore, it is particularly preferable that the fiber-reinforced elongated structure (A) has substantially the same length as the longitudinal direction of the bumper beam. Such a fiber-reinforced elongated structure (A) is partially placed within a bumper beam forming mold.
ここで「部分的に」とは、次の工程で射出成形、射出溶
融圧縮成形または押出溶融圧縮成形によって充填される
樹脂が充分に流動できるだけの空間がおいている状態を
意味し、配置の状態にもよるが、バンパービーム（金型
）容量の概ね５０％以下である。繊維強化長尺構造物（
Ａ）を配置し補強するバンパービームの部位としては特
に制約はなく、−船釣にはバンパービーム全体に渡って
均一に補強されるように配置してもよいが、より補強効
果を高めるためには、バンパービームの中央部に荷重を
かけた時に変形が大きくなる部位、例えば第２図あるい
は第４図の如く断面形状が概ねＵ字状のバンパービーム
にあってはＵ字の先端（例えば第２図のＡ、第４図のＢ
）付近に、バンパービームの長手方向に沿って重点的に
配置し、補強するのが好ましい。Here, "partially" means a state in which there is enough space for the resin to be filled in the next step by injection molding, injection melt compression molding, or extrusion melt compression molding to flow sufficiently, and the arrangement state Although it depends on the situation, it is approximately 50% or less of the bumper beam (mold) capacity. Fiber-reinforced elongated structure (
There are no particular restrictions on the parts of the bumper beam where A) should be placed and reinforced;--For boat fishing, the bumper beam may be placed so that it is evenly reinforced over the entire length; however, in order to further enhance the reinforcing effect, is the part where the deformation becomes large when a load is applied to the central part of the bumper beam, for example, in the case of a bumper beam with a roughly U-shaped cross section as shown in Fig. 2 or 4, the tip of the U-shape (for example, the A in Figure 2, B in Figure 4
), it is preferable to place and reinforce the bumper beam intensively along the longitudinal direction of the bumper beam.
又、繊維強化長尺構造物（Ａ）を金型内に配置するにあ
たっては、金型の開閉あるいは次工程で射出成形等によ
り充填される樹脂の圧力と対応して作動するピンを設け
、これによって金型面から少し浮かせた状態で繊維強化
長尺構造物（Ａ）を保持するのがよい。In addition, when placing the fiber-reinforced elongated structure (A) in the mold, a pin is provided that operates in response to the opening and closing of the mold or the pressure of the resin filled in the next process by injection molding, etc. It is preferable to hold the fiber-reinforced elongated structure (A) in a state slightly lifted from the mold surface.
次に、繊維強化長尺構造物（Ａ）が配置された金型内に
、射出成形、射出溶融圧縮成形または押出溶融圧縮成形
により、熱可塑性樹脂と補強用繊維０〜８０重量％とか
らなる樹脂組成物（Ｂ）の溶融物を充填することにより
、前記繊維強化長尺構造物（Ａ）が実質的に内在し一体
化したバンパービームが得られる。Next, the fiber-reinforced elongated structure (A) made of a thermoplastic resin and reinforcing fibers of 0 to 80% by weight is placed in a mold in which the fiber-reinforced elongated structure (A) is placed by injection molding, injection melt compression molding, or extrusion melt compression molding. By filling the melted resin composition (B), a bumper beam in which the fiber-reinforced elongated structure (A) is substantially incorporated and integrated can be obtained.
ここで用いられる樹脂組成物（Ｂ）において、構成成分
である熱可塑性樹脂としては、繊維強化長尺構造物（Ａ
）の構成成分として前述した如き公知の熱可塑性樹脂お
よびその変性体が何れも使用できる。軽量化、低コスキ
化、加工性、強度、剛性、耐腐食性等の面から、好まし
くはポリプロピレン、ポリエチレンテレフタレート、ポ
リブチレンテレフタレートまたはポリアミドを主体とし
たもの、もしくはこれと他の熱可塑性樹脂とのアロイま
たはブレンド物であり、より好ましくはポリプロピレン
を主体としたものである。In the resin composition (B) used here, the thermoplastic resin as a component is a fiber-reinforced elongated structure (A
) Any of the known thermoplastic resins and modified products thereof as described above can be used. In terms of weight reduction, low cost, processability, strength, rigidity, corrosion resistance, etc., it is preferable to use polypropylene, polyethylene terephthalate, polybutylene terephthalate, or polyamide as a main component, or a combination of this and other thermoplastic resins. It is an alloy or a blend, and more preferably one mainly composed of polypropylene.
また、樹脂組成物（Ｂ）において、補強用繊維の存在は
必須ではないが、バンパービームの重量増加を極力抑え
ながら強度を高めるためには、一般には２０〜８０重量
％の補強用繊維を含有するものが好ましく、中でも樹脂
組成物（Ｂ）がペレント状であり、ペレットと実質的に
同一長さでペレットの長さ方向にほぼ平行に配列した２
０〜８０重量％の補強用繊維を含有する長さ３〜１００
ｍ１ＲＩのものが好ましい。かかる特定構造のペレット
状樹脂組成物（Ｂ）は、例えば引き抜き成形等の方法に
よって得ることができる。配合される補強用繊維として
は特に限定はないが、−船釣にはガラス繊維、炭素繊維
、アラミド繊維等が用いられ、特に好ましいのはガラス
繊維である。In the resin composition (B), although the presence of reinforcing fibers is not essential, in order to increase the strength while minimizing the weight increase of the bumper beam, it generally contains 20 to 80% by weight of reinforcing fibers. It is preferable that the resin composition (B) is in the form of pellets, and the resin composition (B) has substantially the same length as the pellets and is arranged approximately parallel to the length direction of the pellets.
Length 3-100 containing 0-80% by weight reinforcing fibers
m1RI is preferred. The pellet-like resin composition (B) having such a specific structure can be obtained, for example, by a method such as pultrusion molding. The reinforcing fibers to be blended are not particularly limited, but glass fibers, carbon fibers, aramid fibers, etc. are used for boat fishing, and glass fibers are particularly preferred.
また、上記の如き樹脂組成物（Ｂ）には、一般に熱可塑
性樹脂に配合される公知の物質、例えば酸化防止剤や紫
外線吸収剤等の安定剤、難燃剤、可塑剤、結晶化促進剤
、結晶核剤、帯電防止剤、着色剤、板状あるいは粉粒状
の充填材等も目的に応じ適宜添加することも可能である
。In addition, the resin composition (B) as described above may contain known substances that are generally blended into thermoplastic resins, such as stabilizers such as antioxidants and ultraviolet absorbers, flame retardants, plasticizers, crystallization promoters, Crystal nucleating agents, antistatic agents, coloring agents, plate-like or powder-like fillers, etc. can also be added as appropriate depending on the purpose.
かかる樹脂組成物（Ｂ）を用い、その溶融物を繊維強化
長尺構造物（Ａ）が配置された金型内に充填しバンパー
ビームを成形するにあたっては、前述した如く射出成形
、射出溶融圧縮成形または押出溶融圧縮成形が用いられ
る。ここで、射出成形については特に説明を要しないで
あろう。In order to form a bumper beam by using the resin composition (B) and filling the melt into a mold in which the fiber-reinforced elongated structure (A) is arranged, injection molding, injection melt compression, etc. are used as described above. Molding or extrusion melt compression molding is used. Here, injection molding does not require any particular explanation.
射出溶融圧縮成形とは、射出成形機内で溶融した樹脂を
、成形品（本発明の場合はバンパービーム）を成形する
に必要な量だけ金型に送り込んだのち圧縮成形するもの
であり、押出溶融圧縮成形とは、押出機で溶融させた樹
脂を、成形品を成形するに必要な量だけ金型に送り込ん
だのち圧縮成形するものである。かかる成形法の内、本
発明において用いられるのが特に好ましいのは射出成形
および射出溶融圧縮成形である。Injection melt compression molding is a process in which the amount of resin melted in an injection molding machine is fed into a mold in the amount necessary to form a molded product (in the case of the present invention, a bumper beam), and then compression molded. Compression molding is a process in which resin is melted in an extruder and fed into a mold in the amount necessary to form a molded product, and then compression molded. Among such molding methods, injection molding and injection melt compression molding are particularly preferred for use in the present invention.
これらの成形法は生産性、成形加工性に優れ、得られた
バンパービームの表面状態及び物性の均−性等も良好で
あるという特徴を有する。These molding methods are characterized by excellent productivity and molding processability, and the resulting bumper beams have good surface conditions and good uniformity of physical properties.
かかる如く成形して得られた本発明のバンパービームに
おいて、補強用繊維の総含有量は２０〜８０重量％（バ
ンパービーム中）とする必要があり、繊維強化長尺構造
物（Ａ）及び樹脂組成物（Ｂ）に含有される補強用繊維
の割合、及び（Ａ）成分と（Ｂ）成分の配合比率をコン
トロールし、上記の条件を満足させる必要がある。補強
用繊維の総含有量が２０重量％未満では軽量化と強度、
剛性等の両方を満足するバンパービームを得ることがで
きない。即ち、軽量化を図れば強度、剛性等が不足し、
逆に、必要な強度、剛性等を得ようとすると厚肉となり
軽量化が不可能になる。また、補強用繊維の総含有量が
８０重量％を越えるとバンパービームの成形加工性、外
観等が著しく劣るものとなる。補強用繊維の総含有量と
しては３０〜７０重量％が好ましく、特に好ましくは３
５〜６５重量％である。In the bumper beam of the present invention obtained by molding as described above, the total content of reinforcing fibers must be 20 to 80% by weight (in the bumper beam), and the fiber-reinforced elongated structure (A) and the resin It is necessary to control the proportion of reinforcing fibers contained in composition (B) and the blending ratio of components (A) and (B) to satisfy the above conditions. If the total content of reinforcing fibers is less than 20% by weight, weight reduction and strength,
It is not possible to obtain a bumper beam that satisfies both rigidity and other requirements. In other words, if you try to reduce the weight, the strength, rigidity, etc. will be insufficient,
On the other hand, if you try to obtain the necessary strength, rigidity, etc., the wall will become thicker, making it impossible to reduce the weight. Furthermore, if the total content of reinforcing fibers exceeds 80% by weight, the moldability, appearance, etc. of the bumper beam will be significantly inferior. The total content of reinforcing fibers is preferably 30 to 70% by weight, particularly preferably 3% by weight.
It is 5 to 65% by weight.
本発明において、樹脂組成物（Ｂ） として補強用繊維
を含有するものを用いた場合、上記の如く成形して得ら
れたバンパービームにおいて、樹脂組成物（Ｂ）からの
補強用繊維は１〜３０ｍｍの重量平均繊維長で分散して
いるのが好ましい。In the present invention, when a resin composition (B) containing reinforcing fibers is used, in the bumper beam obtained by molding as described above, the reinforcing fibers from the resin composition (B) are 1 to 1. Preferably, the fibers are dispersed with a weight average fiber length of 30 mm.
かかる繊維長での分散は、樹脂組成物（Ｂ）としてペレ
ットと実質的に同一長さでペレットの長さ方向にほぼ平
行に配列した補強用繊維を含有するペレット状のものを
用いた時、より容易に得られる。Such dispersion in fiber length is achieved when a pellet-like resin composition (B) containing reinforcing fibers having substantially the same length as the pellets and arranged approximately parallel to the length direction of the pellets is obtained. more easily obtained.
また、本発明においては、強度、剛性等を維持しつつバ
ンパービームを更に薄肉軽量化するため、バンパービー
ムの背面に補強用のリブを設けたり、バンパービーム重
量の大幅な増大をもたらさない範囲で、所望の部位に金
属等の長尺物をインサート成形により埋設することも有
効である。また、バンパービーム取付けのための支持具
を一体的に成形したり、取付用孔を設けることも可能で
ある。本発明においては、バンパービームの成形に用い
る材料に特徴があり、成形加工性に優れているため、上
記の如き点を含め、かなり自由な形状設計に対応するこ
とが可能である。In addition, in the present invention, in order to further reduce the thickness and weight of the bumper beam while maintaining strength, rigidity, etc., reinforcing ribs are provided on the back of the bumper beam, and within the range of not significantly increasing the weight of the bumper beam. It is also effective to bury a long object such as metal in a desired location by insert molding. Further, it is also possible to integrally mold a support for mounting the bumper beam or to provide a mounting hole. In the present invention, the material used to form the bumper beam has characteristics and is excellent in formability, so it is possible to accommodate fairly free shape design, including the points mentioned above.
以下、実施例により本発明を更に具体的に説明するが、
本発明はこれに限定されるものではない。Hereinafter, the present invention will be explained in more detail with reference to Examples.
The present invention is not limited to this.
実施例１〜２
引き抜き成形によって得られ、ポリプロピレンと一方向
に引き揃えられたガラス繊維６０重量％からなる輻１０
ｍｍ、厚さ３ｍのリボン状長尺構造物を、第４図に示し
た位置で、且つバンパービームの長手方向のほぼ全長に
わたって内在させるよう、金型内に配置した。次に引き
抜き成形によって得られたガラス繊維４０重量％を含有
する１２ｍｍのベレット状ポリプロピレン樹脂組成物（
ガラス繊維の繊維長も実質的に１２ａ＋＋で、ペレント
の長さ方向に配列）を用い、射出溶融圧縮成形により第
３図及び第４図の如き形状のバンパービームを成形した
（実施例１）。Examples 1-2 A thread 10 made of 60% by weight of glass fibers obtained by pultrusion and aligned in one direction with polypropylene
A ribbon-like elongated structure having a diameter of 3.0 mm and a thickness of 3 m was placed in the mold at the position shown in FIG. 4 and so as to be contained over almost the entire length of the bumper beam in the longitudinal direction. Next, a 12 mm pellet-shaped polypropylene resin composition containing 40% by weight of glass fiber obtained by pultrusion molding (
A bumper beam having a shape as shown in FIGS. 3 and 4 was formed by injection melt compression molding using glass fibers having a fiber length of substantially 12a++ and arranged in the longitudinal direction of the pellet (Example 1).
又、長尺構造物として実施例１と同しものを用い、これ
を同様に金型内に配置したのち、チョツプドガラス繊維
３０重量％とポリプロピレンを押出機で溶融混練してな
るペレット状組成物を用い、射出成形することにより同
様のバンパービームを成形した（実施例２）。Further, the same elongated structure as in Example 1 was used, and after placing it in the mold in the same manner, a pellet-like composition obtained by melt-kneading 30% by weight of chopped glass fiber and polypropylene in an extruder was added. A similar bumper beam was formed by using and injection molding (Example 2).
尚、実施例１、実施例２のバンパービームにおいて分散
したガラス繊維の平均繊維長（長尺構造物に含まれる繊
維以外のもの）は各々３．２閣、０．４ ｍｍであった
。Incidentally, the average fiber length of the glass fibers dispersed in the bumper beams of Examples 1 and 2 (other than fibers contained in the elongated structure) was 3.2 mm and 0.4 mm, respectively.
得られたバンパービームの重量及び、第３図の如く２点
（スパン間距離１０００＋＋＋ｏ＋）を支持し、静的曲
げ試験を行った時の破壊荷重を測定し、結果を第１表に
示す。The weight of the obtained bumper beam and the breaking load when a static bending test was performed while supporting it at two points (distance between spans 1000+++o+) as shown in FIG. 3 were measured, and the results are shown in Table 1.
このように、本発明によるバンパービームは軽量であり
、かつ、充分な強度、剛性、耐腐食性、表面状態等を有
するものであった。また、成形法も簡便で、生産性に優
れたものであった。As described above, the bumper beam according to the present invention was lightweight and had sufficient strength, rigidity, corrosion resistance, surface condition, etc. Furthermore, the molding method was simple and had excellent productivity.
以上の説明並びに実施例により明らかな如く、特定の繊
維強化長尺構造物を内在させ一体化してなる本発明の樹
脂製バンパービームは、軽量で、かつ、実用に耐え得る
剛性、耐腐食性等を有するものである。しかも、成形加
工性に優れ、射出成形、射出溶融圧縮成形等の簡便な成
形法により製造可能であるため、形状設計の自由度が高
く、生産性に優れ、コスト的にも有利であり、極めて実
用価値の高いものである。As is clear from the above description and examples, the resin bumper beam of the present invention, which incorporates and integrates a specific fiber-reinforced elongated structure, is lightweight and has practical rigidity, corrosion resistance, etc. It has the following. Moreover, it has excellent moldability and can be manufactured using simple molding methods such as injection molding and injection melt compression molding, so it has a high degree of freedom in shape design, has excellent productivity, and is extremely cost-effective. It has high practical value.
第１図はバンパービームの一例を示す斜視略示図、第２
図は第１図のＩＩ線における断面略示図である。また、
第３図は実施例において成形したバンパービームと、そ
の静的曲げ試験方法を示す正面略示図、第４図は、第３
図のバンパービームの■−■線における断面略示図であ
る。
３８１図
第２図
１ バンパービーム
２ ペンデュラム
３ 支持点
４ 繊維強化長尺構造物
出願人代理人 古 谷 馨
（外３名）Figure 1 is a schematic perspective view showing an example of a bumper beam, Figure 2 is a schematic perspective view showing an example of a bumper beam;
The figure is a schematic cross-sectional view taken along line II in FIG. 1. Also,
Figure 3 is a schematic front view showing the bumper beam formed in the example and its static bending test method, and Figure 4 is the bumper beam formed in the example.
FIG. 3 is a schematic cross-sectional view of the bumper beam in the figure taken along the line ■-■. Figure 381 Figure 2 1 Bumper beam 2 Pendulum 3 Support point 4 Fiber-reinforced long structure applicant's agent Kaoru Furuya (3 others)
Claims (1)
してなる繊維強化長尺構造物（Ａ）を、バンパービーム
成形金型内に部分的に配置したのち、射出成形、射出溶
融圧縮成形または押出溶融圧縮成形により熱可塑性樹脂
と補強用繊維０〜８０重量％とからなる樹脂組成物（Ｂ
）の溶融物を前記金型内に充填し、前記繊維強化長尺構
造物（Ａ）が実質的に内在し一体化したバンパービーム
に成形することを特徴とする２０〜８０重量％の補強用
繊維を含有するバンパービームの製造法。 ２ 繊維強化長尺構造物（Ａ）が、一方向に引き揃えら
れた補強用繊維を含有するものである請求項１記載のバ
ンパービームの製造法。 ３ 引き揃えられた補強用繊維がバンパービームの長手
方向とほぼ平行となるように、繊維強化長尺構造物（Ａ
）をバンパービーム成形金型内に配置する請求項２記載
のバンパービームの製造法。 ４ 繊維強化長尺構造物（Ａ）が、織物状、網状又はラ
ンダム状に配置された補強用繊維を含有するものである
請求項１記載のバンパービームの製造法。 ５ 繊維強化長尺構造物（Ａ）が、バンパービームの長
手方向とほぼ同一長さを有するものである請求項１記載
のバンパービームの製造法。 ６ 繊維強化長尺構造物（Ａ）が、ストランド状、棒状
、リボン状、テープ状またはシート状のものである請求
項１〜５の何れか１項記載のバンパービームの製造法。 ７ 繊維強化長尺構造物（Ａ）の構成成分である合成樹
脂が熱可塑性樹脂である請求項１〜６の何れか１項記載
のバンパービームの製造法。 ８ 繊維強化長尺構造物（Ａ）の構成成分である合成樹
脂がポリプロピレン、ポリエチレンテレフタレート、ポ
リブチレンテレフタレートまたはポリアミドを主体とす
るもの、もしくはこれと他の熱可塑性樹脂とのアロイま
たはブレンド物である請求項７記載のバンパービームの
製造法。 ９ 樹脂組成物（Ｂ）がペレット状であり、ペレットと
実質的に同一長さでペレットの長さ方向にほぼ平行に配
列した２０〜８０重量％の補強用繊維を含有する長さ３
〜１００ｍｍのものである請求項１〜８の何れか１項記
載のバンパービームの製造法。 １０ 樹脂組成物（Ｂ）の構成成分である熱可塑性樹脂
がポリプロピレン、ポリエチレンテレフタレート、ポリ
ブチレンテレフタレートまたはポリアミドを主体とする
もの、もしくはこれと他の熱可塑性樹脂とのアロイまた
はブレンド物である請求項１〜９の何れか１項記載のバ
ンパービームの製造法。 １１ 繊維強化長尺構造物（Ａ）および樹脂組成物（Ｂ
）に含有される補強用繊維が何れもガラス繊維である請
求項１〜１０の何れか１項記載のバンパービームの製造
法。 １２ 請求項１〜１１の何れか１項記載の製造法により
得られるバンパービーム。[Claims] 1. After partially placing a fiber-reinforced elongated structure (A) containing a synthetic resin and 10 to 80% by weight of reinforcing fibers in a bumper beam forming mold, A resin composition (B
20-80% by weight reinforcement, characterized in that the melt of (A) is filled into the mold and formed into a bumper beam in which the fiber-reinforced elongated structure (A) is substantially embedded and integrated. A method for manufacturing bumper beams containing fibers. 2. The method for manufacturing a bumper beam according to claim 1, wherein the fiber-reinforced elongated structure (A) contains reinforcing fibers aligned in one direction. 3 The fiber-reinforced elongated structure (A
) in a bumper beam forming mold. 4. The method for manufacturing a bumper beam according to claim 1, wherein the fiber-reinforced elongated structure (A) contains reinforcing fibers arranged in a woven, net-like, or random manner. 5. The method for manufacturing a bumper beam according to claim 1, wherein the fiber-reinforced elongated structure (A) has approximately the same length as the longitudinal direction of the bumper beam. 6. The method for manufacturing a bumper beam according to any one of claims 1 to 5, wherein the fiber-reinforced elongated structure (A) is in the form of a strand, a rod, a ribbon, a tape, or a sheet. 7. The method for manufacturing a bumper beam according to any one of claims 1 to 6, wherein the synthetic resin that is a component of the fiber-reinforced elongated structure (A) is a thermoplastic resin. 8. The synthetic resin that is a component of the fiber-reinforced elongated structure (A) is mainly composed of polypropylene, polyethylene terephthalate, polybutylene terephthalate, or polyamide, or is an alloy or blend of this and other thermoplastic resins. The method for manufacturing a bumper beam according to claim 7. 9 Length 3 in which the resin composition (B) is in the form of pellets and contains 20 to 80% by weight of reinforcing fibers that are substantially the same length as the pellets and arranged substantially parallel to the length direction of the pellets.
9. The method for manufacturing a bumper beam according to any one of claims 1 to 8, wherein the bumper beam has a thickness of 100 mm. 10. A claim in which the thermoplastic resin that is a component of the resin composition (B) is mainly composed of polypropylene, polyethylene terephthalate, polybutylene terephthalate, or polyamide, or is an alloy or blend of this and other thermoplastic resins. 10. The method for manufacturing a bumper beam according to any one of 1 to 9. 11 Fiber-reinforced elongated structure (A) and resin composition (B
11. The method for manufacturing a bumper beam according to claim 1, wherein all of the reinforcing fibers contained in the bumper beam are glass fibers. 12. A bumper beam obtained by the manufacturing method according to any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2201684A JP2938528B2 (en) | 1990-07-30 | 1990-07-30 | Bumper beam and its manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2201684A JP2938528B2 (en) | 1990-07-30 | 1990-07-30 | Bumper beam and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0487855A true JPH0487855A (en) | 1992-03-19 |
| JP2938528B2 JP2938528B2 (en) | 1999-08-23 |
Family
ID=16445192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2201684A Expired - Fee Related JP2938528B2 (en) | 1990-07-30 | 1990-07-30 | Bumper beam and its manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2938528B2 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993022122A1 (en) * | 1992-04-29 | 1993-11-11 | Davidson Textron Inc. | Improved bumper preform and method of forming same |
| JPH05318472A (en) * | 1992-05-22 | 1993-12-03 | Sekisui Chem Co Ltd | Fiber-reinforced thermoplastic resin sheet |
| US6569273B1 (en) * | 1998-06-22 | 2003-05-27 | Cole H. Beadon | Process for manufacturing fibre reinforced plastic masts, spars or columns |
| JP2005538864A (en) * | 2002-09-15 | 2005-12-22 | アールシーシー リージョナル コンパクト カー アーゲー | Method for manufacturing structural parts from fiber reinforced thermoplastic materials |
| JP2006220245A (en) * | 2005-02-14 | 2006-08-24 | Honda Motor Co Ltd | Energy absorbing structure |
| JP2008073938A (en) * | 2006-09-21 | 2008-04-03 | Daikyo Nishikawa Kk | Composite resin molding and its molding method |
| JP2010520081A (en) * | 2007-03-01 | 2010-06-10 | シーエーエス ホールディングス オーストラリア プロプライエタリー リミテッド | Materials used for platform, parts, and manufacturing method thereof |
| WO2013089228A1 (en) * | 2011-12-16 | 2013-06-20 | 東レ株式会社 | Frame structure and automobile component using same |
| JP2015504812A (en) * | 2011-12-21 | 2015-02-16 | エルジー・ハウシス・リミテッドＬｇ Ｈａｕｓｙｓ，Ｌｔｄ． | Bumper back beam incorporating fiber composite reinforcing material having hollow cross section and bumper having the same |
| US20160221519A1 (en) * | 2015-02-02 | 2016-08-04 | GM Global Technology Operations LLC | Carbon glass fiber pultrussion bumper beams |
| KR20190017442A (en) * | 2017-08-11 | 2019-02-20 | 주식회사 캠스 | Manufacturing Method For beam |
| JP2021045865A (en) * | 2019-09-18 | 2021-03-25 | 株式会社八木熊 | Plastic frame, rack gear and slide rail |
-
1990
- 1990-07-30 JP JP2201684A patent/JP2938528B2/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993022122A1 (en) * | 1992-04-29 | 1993-11-11 | Davidson Textron Inc. | Improved bumper preform and method of forming same |
| JPH05318472A (en) * | 1992-05-22 | 1993-12-03 | Sekisui Chem Co Ltd | Fiber-reinforced thermoplastic resin sheet |
| US6569273B1 (en) * | 1998-06-22 | 2003-05-27 | Cole H. Beadon | Process for manufacturing fibre reinforced plastic masts, spars or columns |
| JP2005538864A (en) * | 2002-09-15 | 2005-12-22 | アールシーシー リージョナル コンパクト カー アーゲー | Method for manufacturing structural parts from fiber reinforced thermoplastic materials |
| JP2006220245A (en) * | 2005-02-14 | 2006-08-24 | Honda Motor Co Ltd | Energy absorbing structure |
| JP2008073938A (en) * | 2006-09-21 | 2008-04-03 | Daikyo Nishikawa Kk | Composite resin molding and its molding method |
| JP2010520081A (en) * | 2007-03-01 | 2010-06-10 | シーエーエス ホールディングス オーストラリア プロプライエタリー リミテッド | Materials used for platform, parts, and manufacturing method thereof |
| WO2013089228A1 (en) * | 2011-12-16 | 2013-06-20 | 東レ株式会社 | Frame structure and automobile component using same |
| JP2015504812A (en) * | 2011-12-21 | 2015-02-16 | エルジー・ハウシス・リミテッドＬｇ Ｈａｕｓｙｓ，Ｌｔｄ． | Bumper back beam incorporating fiber composite reinforcing material having hollow cross section and bumper having the same |
| US9233656B2 (en) | 2011-12-21 | 2016-01-12 | Lg Hausys, Ltd. | Bumper back beam with a fiber composite reinforcing material |
| US20160221519A1 (en) * | 2015-02-02 | 2016-08-04 | GM Global Technology Operations LLC | Carbon glass fiber pultrussion bumper beams |
| CN105835810A (en) * | 2015-02-02 | 2016-08-10 | 通用汽车环球科技运作有限责任公司 | Carbon glass fiber pultrussion bumper beams |
| KR20190017442A (en) * | 2017-08-11 | 2019-02-20 | 주식회사 캠스 | Manufacturing Method For beam |
| JP2021045865A (en) * | 2019-09-18 | 2021-03-25 | 株式会社八木熊 | Plastic frame, rack gear and slide rail |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2938528B2 (en) | 1999-08-23 |
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