JPH07178835A - Tubular body with flange and its molding method - Google Patents
Tubular body with flange and its molding methodInfo
- Publication number
- JPH07178835A JPH07178835A JP5324647A JP32464793A JPH07178835A JP H07178835 A JPH07178835 A JP H07178835A JP 5324647 A JP5324647 A JP 5324647A JP 32464793 A JP32464793 A JP 32464793A JP H07178835 A JPH07178835 A JP H07178835A
- Authority
- JP
- Japan
- Prior art keywords
- tubular body
- flange
- molding
- reinforcing fibers
- present
- 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.)
- Pending
Links
Landscapes
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、力学的に優れた強度を
有しながら容易に成形することが可能なフランジ付き管
状体、並びに、その成形方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tubular body with a flange, which has mechanically excellent strength and can be easily molded, and a molding method thereof.
【０００２】[0002]
【従来の技術】周知の通り、あらゆる産業分野において
管状体が用いられている。例えば、空気、窒素、都市ガ
ス等の気体、家庭用や工業用の給排水、熱媒体等の液
体、粉体、ペレット、さらにはコンクリートの破片など
の固体を移送するために管状体が用いられている。As is well known, tubular bodies are used in all industrial fields. For example, tubular bodies are used to transfer air, nitrogen, gas such as city gas, household and industrial water supply and drainage, liquid such as heat medium, powder, pellets, and solids such as concrete fragments. There is.
【０００３】従来、これらの管状体としては、鋳鉄やス
テンレスなどの金属製のものが用いられていた。しか
し、金属製の管状体は、重量が重く、管状体の大きさに
よっては配管時に運搬機械などを必要とする場合が多
く、また、金属でできているため腐食による劣化等を考
慮する必要がある。腐食による劣化については、特殊な
鋼材を用いたり、表面を塗装することによりある程度抑
制することができるが、根本的な解決には至っていな
い。Conventionally, as these tubular bodies, those made of metal such as cast iron and stainless steel have been used. However, the metal tubular body is heavy and often requires a transporting machine for piping depending on the size of the tubular body.Because it is made of metal, it is necessary to consider deterioration due to corrosion. is there. Deterioration due to corrosion can be suppressed to some extent by using a special steel material or coating the surface, but it has not been a fundamental solution.
【０００４】このため、セラミックなどの特殊な素材を
用いた管状体や塩化ビニルなどの汎用プラスチックを用
いた管状体が提供されているが、前者は高価なため一般
的には用いられておらず、後者は強度が不十分なため上
記金属製の管状体の代替品とはなっていない。Therefore, a tubular body made of a special material such as ceramics or a tubular body made of a general-purpose plastic such as vinyl chloride is provided, but the former is not generally used because it is expensive. However, the latter is not a substitute for the above metal tubular body because of insufficient strength.
【０００５】上記のような事情から、近年、繊維強化樹
脂複合材料（以下、ＦＲＰと称す）を用いた管状体が提
供されている。ＦＲＰ製の管状体は、上記金属製の管状
体に比べ重量が軽く、ある種の樹脂を用いることにより
耐腐食性を非常に高くすることが可能である上に、汎用
プラスチック製の管状体に比べ強く、金属と同程度の強
度を有するなど多くの優れた特徴を有する。Due to the above circumstances, in recent years, a tubular body using a fiber reinforced resin composite material (hereinafter referred to as FRP) has been provided. The FRP tubular body is lighter in weight than the metal tubular body described above, and it is possible to make the corrosion resistance extremely high by using a resin of a certain kind. It has many excellent features such as being stronger than other metals and having the same strength as metals.
【０００６】これらのＦＲＰには、樹脂として熱硬化性
樹脂と熱可塑性樹脂を用いたものがあるが、前者の熱硬
化性樹脂を用いたＦＲＰ製の管状体の場合は、熱硬化性
樹脂が脆性のためクラックが入り易く、また分解が困難
なため再利用することは不可能に近い。これに対して、
後者の熱可塑性樹脂を用いたＦＲＰ製の管状体の場合
は、熱可塑性樹脂が靭性に富むためクラックが入り難
く、溶融して再利用することも可能なため、環境保護の
面からも上記熱硬化性樹脂を用いたＦＲＰ製の管状体に
比べて優れる。Some of these FRPs use a thermosetting resin and a thermoplastic resin as the resin, but in the case of the former FRP tubular body using the thermosetting resin, the thermosetting resin is used. Since it is brittle, cracks are likely to occur, and it is difficult to disassemble, so it is almost impossible to reuse. On the contrary,
In the case of the latter tubular body made of FRP using the thermoplastic resin, since the thermoplastic resin is rich in toughness, cracks are less likely to occur, and the thermoplastic resin can be reused by melting, so that the above heat treatment is also taken from the viewpoint of environmental protection. It is superior to the FRP tubular body that uses a curable resin.
【０００７】また、上記のような管状体を接続する場
合、接続する管状体の接続部分の管径に差を持たせて差
し込む方法や接続部分にネジ部を設ける方法があるが、
これらの方法を用いた場合、接続部分の強度が弱く、そ
のため管状体内部の物質が漏れたり、また管径が大きい
場合にはこれらの方法を用いることができないという問
題がある。これらに対して、接続する管状体の接続部分
にフランジを設けて接続する方法があり、この方法の場
合、強度も大きく、管径のサイズに関係なく採用するこ
とができる。Further, in the case of connecting the above-mentioned tubular bodies, there are a method of inserting with a difference in the pipe diameter of the connecting portion of the tubular body to be connected, and a method of providing a screw portion at the connecting portion.
When these methods are used, there is a problem that the strength of the connecting portion is weak, and therefore the substance inside the tubular body leaks, and these methods cannot be used when the tube diameter is large. In contrast to this, there is a method of connecting by connecting a flange to the connecting portion of the tubular body to be connected, and in this method, the strength is large and it can be adopted regardless of the size of the pipe diameter.
【０００８】従来、ＦＲＰ製の管状体にフランジを付け
る方法としては、管状体に別途作製したフランジを樹脂
を接着剤として取り付ける方法や、管状体に直接テ−プ
状成形材料を巻き付けたりして局部加工によりフランジ
を形成する方法などが用いられてきた。しかし、これら
の方法を用いた場合には、管状体とフランジの接続部分
の強度が不充分であり、またフランジ取り付け時の加工
が煩雑であるため、実用的には問題であった。Conventionally, as a method of attaching a flange to a tubular body made of FRP, a method of attaching a separately prepared flange to the tubular body with an adhesive or a method of directly winding a tape-shaped molding material around the tubular body is used. A method of forming a flange by local processing has been used. However, when these methods are used, the strength of the connecting portion between the tubular body and the flange is insufficient, and the processing at the time of attaching the flange is complicated, which is a practical problem.
【０００９】このように、管状体とフランジの境界部分
の強度が充分であり、容易にフランジを取り付けられる
熱可塑性樹脂製のフランジ付き管状体、及び、その製造
方法は、未だ得られていないのが実状である。As described above, a tubular body with a flange made of a thermoplastic resin, which has a sufficient strength at the boundary portion between the tubular body and the flange and can be easily attached with a flange, and a manufacturing method thereof have not yet been obtained. Is the actual situation.
【００１０】[0010]
【発明が解決しようとする課題】本発明者らは、管状体
とフランジの境界部分の強度を上げるため、その部分に
用いる強化繊維の配列及び構成について鋭意検討した結
果、管状体とフランジの境界部分を介して連続した強化
繊維を存在させることにより、該境界部分の強度が飛躍
的に向上すること、さらに境界部分を介して連続した強
化繊維を管状体の軸と平行な位置関係に置いた場合に
は、該境界部分の強度がさらに向上すること、並びに、
これら強化繊維を織構造として用いることにより、フラ
ンジ及び管状体が全体として補強されることを見い出し
た。また、上記のようなフランジ付き管状体は、管状体
の一部をフランジとして用い、例えば管状体の端からあ
る一定の長さの部分をフランジとする場合には、その部
分に存在する管状体の周方向の強化繊維を切断したり、
間引いたりすることによって容易に作製することができ
ることを見い出した。DISCLOSURE OF THE INVENTION In order to increase the strength of the boundary portion between the tubular body and the flange, the inventors diligently studied the arrangement and configuration of the reinforcing fibers used in that portion, and as a result, the boundary between the tubular body and the flange was found. The presence of continuous reinforcing fibers through the portion dramatically improves the strength of the boundary portion, and further the continuous reinforcing fibers through the boundary portion are placed in a positional relationship parallel to the axis of the tubular body. In this case, the strength of the boundary portion is further improved, and
It has been found that by using these reinforcing fibers as a woven structure, the flange and the tubular body are reinforced as a whole. In addition, the tubular body with a flange as described above uses a part of the tubular body as a flange, for example, when a portion of a certain length from the end of the tubular body is used as the flange, the tubular body existing in that portion Cutting the reinforcing fibers in the circumferential direction of
It was found that they can be easily produced by thinning out.
【００１１】[0011]
【課題を解決するための手段】すなわち、本発明は、強
化繊維と熱可塑性樹脂からなる複合材料により構成され
ているフランジ付き管状体、及び、該フランジ付き管状
体であって下記の要件を満たすフランジ付き管状体、 １．強化繊維の一部が管状体部分とフランジ部分に連続
して存在する ２．強化繊維の一部が管状体の軸と平行な位置関係にあ
る ３．強化繊維の一部が織構造を構成している ４．強化繊維の一部が管状体部分とフランジ部分に連続
して存在し、且つ、管状体の軸と平行な位置関係にある ５．強化繊維の一部が管状体部分とフランジ部分に連続
して存在し、且つ、織構造を構成している ６．強化繊維の一部が管状体部分とフランジ部分に連続
して存在し、且つ、管状体の軸と平行な位置関係にあ
り、且つ、織構造を構成している 並びに、管状体を成形する工程と該管状体の一部をフラ
ンジに成形する工程とからなる上記のフランジ付き管状
体の成形方法、及び、該フランジ付き管状体の成形方法
であって下記の要件を満たすフランジ付き管状体の成形
方法を提供するものである。 １．フランジに成形する管状体の一部に存在し、且つ、
管状体の周方向に位置する強化繊維を切断する ２．フランジに成形する管状体の一部に存在し、且つ、
管状体の周方向に位置する強化繊維を間引くThat is, the present invention provides a flanged tubular body made of a composite material composed of reinforcing fibers and a thermoplastic resin, and the flanged tubular body which satisfies the following requirements. Tubular body with flange, 1. A part of the reinforcing fiber is continuously present in the tubular body portion and the flange portion. 2. A part of the reinforcing fibers is in a positional relationship parallel to the axis of the tubular body. 3. A part of the reinforcing fibers constitutes the woven structure. 4. A part of the reinforcing fibers continuously exists in the tubular body portion and the flange portion, and is in a positional relationship parallel to the axis of the tubular body. 5. A part of the reinforcing fibers is continuously present in the tubular body portion and the flange portion and constitutes a woven structure. A part of the reinforcing fibers is continuously present in the tubular body portion and the flange portion, is in a positional relationship parallel to the axis of the tubular body, and constitutes a woven structure, and a step of molding the tubular body And a method for forming the above-mentioned flanged tubular body, which comprises a step of forming a part of the tubular body into a flange, and a method for forming the above-mentioned flanged tubular body, wherein the flanged tubular body satisfies the following requirements: It provides a method. 1. It exists in a part of the tubular body to be molded into the flange, and
1. Cut the reinforcing fibers located in the circumferential direction of the tubular body. It exists in a part of the tubular body to be molded into the flange, and
Thinning out the reinforcing fibers located in the circumferential direction of the tubular body
【００１２】本発明のフランジ付き管状体に用いられる
熱可塑性樹脂としては、例えばナイロン６、ナイロン６
６、ナイロン１２に代表されるポリアミド樹脂、ポリエ
チレンテレフタレ−ト、ポリブチレンテレフタレ−トな
どのポリエステル樹脂、ポリエチレンやポリプロピレン
などのポリオレフィン系樹脂、ポリエ−テルエ−テルケ
トン樹脂、ポリフェニレンサルファイド樹脂、ポリカ−
ボネ−ト樹脂、ポリエ−テルイミド樹脂などが挙げられ
るが、特にこれらに限定されるものではない。なお、こ
れらの繊維を２種類以上組合わせて用いてもよく、また
用途に応じて、例えば物性や価格の点からはポリオレフ
ィン系樹脂、靭性の点からはナイロン６、耐熱性の点か
らはポリエ−テルエ−テルケトン樹脂やポリエ−テルイ
ミド樹脂を用い、必要に応じて添加剤を加えたり、変性
して用いるのが好ましい。Examples of the thermoplastic resin used in the flanged tubular body of the present invention include nylon 6 and nylon 6
6, polyamide resin represented by nylon 12, polyester resin such as polyethylene terephthalate and polybutylene terephthalate, polyolefin resin such as polyethylene and polypropylene, polyether ether ketone resin, polyphenylene sulfide resin, polycarbonate
Examples thereof include, but are not limited to, a Bonnet resin and a polyetherimide resin. Two or more kinds of these fibers may be used in combination, and depending on the application, for example, polyolefin resin from the viewpoint of physical properties and price, nylon 6 from the viewpoint of toughness, and polyester from the viewpoint of heat resistance. -It is preferable to use a terether-terketone resin or a polyetherimide resin, and to add or modify an additive as necessary before use.
【００１３】本発明のフランジ付き管状体に用いられる
強化繊維としては、例えばガラス繊維、炭素繊維などの
無機繊維、アラミド繊維、ポリエチレン繊維などの有機
繊維、更に、ボロン繊維、アルミナ繊維などの金属繊維
などが挙げられるが、特にこれらに限定されるものでは
ない。なお、これらの繊維を２種類以上組合わせて用い
てもよく、また用途に応じて、例えば性能ならびに価格
の点からガラス繊維、非磁性が必要な場合には炭素繊
維、静電性が必要な場合には金属繊維を用いるのが好ま
しい。Examples of the reinforcing fibers used in the flanged tubular body of the present invention include inorganic fibers such as glass fibers and carbon fibers, organic fibers such as aramid fibers and polyethylene fibers, and metal fibers such as boron fibers and alumina fibers. However, the present invention is not limited to these. In addition, two or more kinds of these fibers may be used in combination, and depending on the application, for example, glass fiber from the viewpoint of performance and price, carbon fiber when non-magnetic is required, electrostatic property is required. In this case, it is preferable to use metal fibers.
【００１４】本発明のフランジ付き管状体に用いられる
強化繊維の一部は、管状体部分とフランジ部分に連続し
て存在することが必要である叉は好ましい。全ての強化
繊維が管状体とフランジとの境界部分において、非連続
となっている場合には、境界部分の強度は熱可塑性樹脂
のみに依存することとなるため、境界部分の強度は極端
に小さくなり、破壊され易くなるためである。なお、管
状体部分とフランジ部分に連続して存在する強化繊維の
割合は、本発明のフランジ付き管状体の素材（熱可塑性
樹脂及び強化繊維）の種類や組成及び該管状体の使用方
法により大きく異なるので、ここにいう強化繊維の一部
とは目的とするフランジと管状体の境界部分の強度を得
るに充分な該強化繊維の量以上という意味である。It is preferable or preferable that some of the reinforcing fibers used in the flanged tubular body of the present invention are present continuously in the tubular body portion and the flange portion. When all the reinforcing fibers are discontinuous at the boundary between the tubular body and the flange, the strength of the boundary depends only on the thermoplastic resin, so the strength of the boundary is extremely small. It is because it becomes easy to be destroyed. The ratio of the reinforcing fibers continuously present in the tubular body portion and the flange portion depends largely on the type and composition of the material (thermoplastic resin and reinforcing fibers) of the flanged tubular body of the present invention and the method of using the tubular body. Since they are different, a part of the reinforcing fibers as used herein means that the amount of the reinforcing fibers is sufficient to obtain the desired strength at the boundary between the flange and the tubular body.
【００１５】本発明のフランジ付き管状体に用いられる
強化繊維の一部は、管状体の軸と平行な位置関係にある
ことが必要である叉は好ましい。全ての強化繊維が管状
体の軸と平行な位置関係にない場合には、管状体部分の
長さ方向やフランジ部分の平面方向の剛性及び強度が低
下するためである。ここで管状体の軸と平行な位置関係
にあるとは、管状体部分においては管状体の軸方向に対
して±１０°以内、より好ましくは±３°以内の範囲に
位置することをいい、フランジ部分においてはフランジ
の平面方向に対して±１０°以内、より好ましくは±３
°以内の範囲に位置することをいう。なお、上記と同様
な理由から、ここにいう強化繊維の一部とは目的とする
管状体部分の長さ方向やフランジ部分の平面方向の剛性
及び強度を得るに充分な該強化繊維の量以上という意味
である。It is preferable or preferable that some of the reinforcing fibers used in the tubular body with a flange of the present invention have a positional relationship parallel to the axis of the tubular body. This is because if all the reinforcing fibers are not in a positional relationship parallel to the axis of the tubular body, the rigidity and strength in the lengthwise direction of the tubular body portion and the plane direction of the flange portion will decrease. Here, being in a positional relationship parallel to the axis of the tubular body means that the tubular body portion is located within ± 10 ° with respect to the axial direction of the tubular body, more preferably within ± 3 °, In the flange portion, within ± 10 ° with respect to the plane direction of the flange, more preferably ± 3
It is located within the range of °. For the same reason as described above, the part of the reinforcing fiber referred to here is an amount of the reinforcing fiber sufficient to obtain the rigidity and strength in the longitudinal direction of the tubular portion and the plane direction of the flange portion. It means that.
【００１６】本発明のフランジ付き管状体に用いられる
強化繊維の一部は、織構造を構成していることが必要で
ある叉は好ましい。全ての強化繊維が織構造を構成しな
い場合、フランジ付き管状体の全体的な強度が不十分と
なるためである。ここで織構造とはいわゆる平織、綾
織、朱子織などをいうが、本発明においては、例えば織
物特有のクリンプを持たず且つ一方向に配列した強化繊
維やテ−プ状の繊維強化複合材料などを二方向以上に積
層した後に、各積層間を該強化繊維やテ−プ状材料で拘
束したものや、樹脂で接着させた多軸積層体や、組物を
構成する強化繊維やテ−プ状の繊維強化複合材料以外の
繊維やテ−プ状材料などで軸方向を強化した組物などを
含むものとする。さらに、織物の端末は、本発明のフラ
ンジ付き管状体に用いられる熱可塑性樹脂と同一または
同種の熱可塑性樹脂により、少なくとも一部が接着され
ていることが好ましい。接着されていない場合、織物を
取り扱う際に織物の端末に解れを生じたり、強化繊維が
よれてることがあるためである。ここで接着する方法と
しては、予め熱可塑性樹脂が強化繊維に含浸されている
テ−プ状の繊維強化複合材料によって織物が構成されて
いるような場合には、織物の端末を半田こてのようなも
ので押さえつけ、少なくとも一部を接着させる方法等を
用いればよく、織物の構造や素材に適した方法を選択す
ればよい。なお、上記と同様な理由から、ここにいう強
化繊維の一部とは目的とするフランジ付き管状体の全体
的な強度を得るに充分な該強化繊維の量以上という意味
である。It is preferable or preferable that a part of the reinforcing fibers used in the flanged tubular body of the present invention has a woven structure. This is because if all the reinforcing fibers do not form a woven structure, the overall strength of the flanged tubular body becomes insufficient. Here, the woven structure means so-called plain weave, twill weave, satin weave, etc., but in the present invention, for example, reinforced fibers or tape-like fiber reinforced composite material having no crimp peculiar to the woven fabric and arranged in one direction, etc. After being laminated in two or more directions, each of the layers is constrained by the reinforcing fiber or tape-shaped material, a multiaxial laminate bonded with a resin, or a reinforcing fiber or tape forming a braid. A fiber-reinforced composite material other than the fiber-shaped composite material, a tape-shaped material, and the like, which are reinforced in the axial direction, are included. Further, it is preferable that at least a part of the end of the woven fabric is bonded with the same or the same thermoplastic resin as the thermoplastic resin used for the flanged tubular body of the present invention. This is because when they are not bonded, the ends of the woven fabric may be loosened when handling the woven fabric, or the reinforcing fibers may be twisted. Here, as a method of bonding, when the woven fabric is made of a tape-shaped fiber-reinforced composite material in which a reinforcing resin is impregnated in advance with a thermoplastic resin, the end of the woven fabric is treated with a soldering iron. A method of pressing with such a material and adhering at least a part thereof may be used, and a method suitable for the structure and material of the woven fabric may be selected. For the same reason as above, a part of the reinforcing fibers as used herein means an amount of the reinforcing fibers which is sufficient to obtain the overall strength of the target tubular body with a flange.
【００１７】本発明のフランジ付き管状体に用いられる
強化繊維の一部は、上記の３つ要件、つまり下記のＡ〜
Ｃの３つの要件について、Ａ及び／叉はＢ及び／叉はＣ
を満たすことが必要である叉は好ましい。 Ａ．強化繊維の一部が管状体部分とフランジ部分に連続
して存在する Ｂ．強化繊維の一部が管状体の軸と平行な位置関係にあ
る Ｃ．強化繊維の一部が織構造を構成している Ａ乃至Ｃの要件を単独に満たす場合も、上記で説明した
ような効果が得られるが、これらの要件２つ以上を組み
合わせて満たすことにより、本発明のフランジ付き管状
体は相乗的にその効果増すためである。A part of the reinforcing fiber used in the flanged tubular body of the present invention has the above-mentioned three requirements, that is, the following items A to A:
For the three requirements of C, A and / or B and / or C
It is necessary or desirable to satisfy A. Part of the reinforcing fiber is continuously present in the tubular body portion and the flange portion. B. A part of the reinforcing fibers is in a positional relationship parallel to the axis of the tubular body. Even when the requirements A to C in which a part of the reinforcing fiber constitutes the woven structure are solely satisfied, the effects as described above can be obtained, but by satisfying a combination of two or more of these requirements, This is because the flanged tubular body of the present invention synergistically increases its effect.
【００１８】本発明のフランジ付き管状体の成形方法
は、管状体を成形する工程と該管状体の一部をフランジ
に成形する工程とからなることが必要である。つまり、
本発明のフランジ付き管状体は、予め成形された管状体
の一部を用いてフランジ部分を成形することが必要であ
る。これは上記の強化繊維の一部が管状体部分とフラン
ジ部分に連続して存在するという要件を満たすためにも
必要であるが、このことによって、フランジ部分は管状
体部分と一体となり、優れた強度が得られることなるか
らである。The method for forming a tubular body with a flange of the present invention must include a step of forming a tubular body and a step of forming a part of the tubular body into a flange. That is,
In the flanged tubular body of the present invention, it is necessary to mold the flange portion by using a part of the tubular body which is previously molded. This is also necessary to satisfy the requirement that a part of the above-mentioned reinforcing fibers be present continuously in the tubular body portion and the flange portion, but this makes the flange portion integral with the tubular body portion, which is excellent. This is because strength can be obtained.
【００１９】本発明のフランジ付き管状体の成形方法に
おいては、フランジに成形する管状体の一部に存在し、
且つ、管状体の周方向に位置する強化繊維を、切断し叉
は間引くことが必要である叉は好ましい。該強化繊維が
切断され叉は間引かれてない場合、周方向に存在する強
化繊維によって拘束されるため、フランジを形成するこ
とが困難となるためである。In the method for forming a tubular body with a flange according to the present invention, it exists in a part of the tubular body to be formed into a flange,
Moreover, it is preferable or preferable that the reinforcing fibers located in the circumferential direction of the tubular body need to be cut or thinned. This is because when the reinforcing fibers are cut or not thinned, they are constrained by the reinforcing fibers existing in the circumferential direction, and it becomes difficult to form a flange.
【００２０】本発明のフランジ付き管状体の成形方法と
しては、一般に知られるプレス成形、内圧成形、シート
ワインディング成形等が挙げられるが、特にこれらに限
定されるものではない。また、本発明のフランジ付き管
状体の成形時に用いる型の材質としては、耐熱性及び耐
熱変形性等の観点から熱間ダイズ鋼やステンレスが好ま
しいが、これらに限定されるものではなく、成形温度や
使用頻度等の成形条件によっては、アルミ、樹脂叉は木
等を用いてもよい。また、成形品の表面性を良好とする
ため、型の表面はメッキ処理やテフロンシートのコート
などにより型表面の離型性を向上させるのが好ましい。
なお、本発明のフランジ付き管状体の成形材料は、成形
時間を短くするために、嵩を小さくしたり、予熱した
り、予備賦形しておくことが好ましい。Examples of the method for molding the tubular body with a flange of the present invention include generally known press molding, internal pressure molding, sheet winding molding, etc., but are not particularly limited thereto. Further, as the material of the mold used at the time of molding the flanged tubular body of the present invention, hot soybean steel and stainless steel are preferable from the viewpoint of heat resistance and heat distortion resistance, but the molding temperature is not limited to these. Aluminum, resin or wood may be used depending on the molding conditions such as the frequency of use and the frequency of use. Further, in order to improve the surface property of the molded product, it is preferable to improve the mold release property of the mold surface by plating the surface of the mold or coating a Teflon sheet.
The molding material for the flanged tubular body of the present invention preferably has a reduced bulk, is preheated, or is preshaped in order to shorten the molding time.
【００２１】[0021]
【実施例】以下、実施例を挙げて、具体的に本発明を説
明するが、本発明はこれらに何等限定されるものではな
い。EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited thereto.
【００２２】なお、以下の実施例（実施例３を除く）に
おいて得られたフランジ付き管状体のフランジに直径１
０．５ｍｍの穴を（ピッチ間中心距離４３０ｍｍ）軸対
称に６点設け、この穴に六角ボルト（Ｍ１０）を通すこ
とにより上記フランジ付き管状体２個を接続し、これら
についてフランジと管状体の境界部分の強度を下記の方
法により評価し、結果を表１に示した。引張試験は、フ
ランジ付き管状体のフランジのない端部から３０ｍｍの
部分に管状体を貫通するよう直径２０ｍｍの円孔を設
け、ここに直径２０ｍｍの治具（ステンレス鋼）を挿入
して、万能試験機を用いて行なった。クロスヘッド速度
は１０ｍｍ／分とした。衝撃引張試験は、上記の引張試
験においてクロスヘッド速度を５００ｍｍ／分で行なっ
た。 ねじり試験は、上記と同様に直径２０ｍｍの治具
を設けたフランジ付き管状体の一端を固定し、もう一方
の治具の一端のみを万能試験機にて押圧してねじり試験
を行なった。治具に対して押圧する初期位置は管状体か
ら３０ｍｍの部分で、押圧する万能試験機の先端は半径
５ｍｍの半円柱体を押圧方向に対して直角方向とした。
クロスヘッド速度は１０ｍｍ／分とした。衝撃ねじり試
験は、上記のねじり試験においてクロスヘッド速度を５
００ｍｍ／分で行なった。以上の試験を行った結果、フ
ランジと管状体の境界部分が破壊されるよりも、他の部
分が破壊される方が早い場合は○、フランジと管状体の
境界部分が破壊される方が早い場合は×とした。The flange of the tubular body with a flange obtained in the following examples (excluding Example 3) had a diameter of 1 mm.
Holes of 0.5 mm (center distance between pitches: 430 mm) are provided at six points in axial symmetry, and two hexagonal bolts (M10) are passed through the holes to connect the two tubular bodies with flanges. The strength of the boundary portion was evaluated by the following method, and the results are shown in Table 1. In the tensile test, a circular hole with a diameter of 20 mm is provided so as to penetrate the tubular body at a portion 30 mm from the end without a flange of the tubular body with a flange, and a jig (stainless steel) with a diameter of 20 mm is inserted into this hole for universal use. It carried out using the test machine. The crosshead speed was 10 mm / min. The impact tensile test was performed at a crosshead speed of 500 mm / min in the above tensile test. In the torsion test, one end of a tubular body with a flange provided with a jig having a diameter of 20 mm was fixed in the same manner as described above, and only one end of the other jig was pressed by a universal testing machine to perform the torsion test. The initial position for pressing against the jig was a portion 30 mm from the tubular body, and the tip of the universal testing machine for pressing was a semi-cylindrical body with a radius of 5 mm perpendicular to the pressing direction.
The crosshead speed was 10 mm / min. The impact torsion test was carried out at a crosshead speed of 5 in the above torsion test.
It was performed at 00 mm / min. As a result of the above test, if the other parts are destroyed faster than the boundary part between the flange and the tubular body is broken, ○, the boundary part between the flange and the tubular body is broken faster. The case was marked with x.
【００２３】[0023]
【実施例１】ガラス繊維にポリプロピレン樹脂を含浸さ
せた厚さ０．１ｍｍ、幅１２ｍｍのテ−プ状材料（ガラ
ス繊維の体積含有率４５％）から成る平織物（経糸２本
／吋、緯糸２本／吋、目付２５０ｇ／ｍ2 ）の成形材料
を準備し（織物幅５３０ｍｍ）、これを管状体形成マン
ドレル（直径４００ｍｍ、長さ５００ｍｍ）に緯糸の方
向がマンドレルの軸方向に対して平行に７層分だけ積層
されるよう巻き付け、その上からポリエチレンテレフタ
レ−トのフィルム（幅２０ｍｍ）を巻き付けた。なお、
ここで用いたテ−プ状材料の含浸度は約８０％であっ
た。次に、予め幅方向の端を３０ｍｍだけ半田こて（設
定表面温度約２８０℃）を用いて適当に経糸と緯糸を接
着させておいたマンドレルからはみ出した該成形材料の
周方向のテ−プ状材料を切断し、軸方向のテ−プ状材料
を半径方向に広げた。この部分をフランジ形成板の上に
接触するようマンドレルを設置し、その上から直径約５
００ｍｍの円孔を設けたポリイミドのフィルム（一辺約
７００ｍｍ、厚さ約２００μｍ）をフランジ形成板上の
テ−プ状材料に接触するよう設置した。更に、フランジ
形成板上にフランジ外周形成マンドレル（内径４６０ｍ
ｍ）を設置し、金属粉（平均粒子径約０．１ｍｍ）を管
状体形成マンドレルとフランジ形成マンドレルとの間に
敷き詰め、フランジ押圧板を設置し、フランジ形成部分
に対して圧力が５ｋｇｆ／ｃｍ2 になるよう重りを設置
した。そして、これらを熱風循環式の加熱炉（炉内温度
２４０℃）に投入し、該成形材料が約２４０℃に到達
後、１０分間だけ状態を保持してから加熱炉から取り出
し、温度が約７０℃になるまで自然冷却してから、成形
品を取り外し、管状体直径４００、長さ５００ｍｍ、フ
ランジ幅３０ｍｍのフランジ付き管状体を得た。Example 1 A plain woven fabric (2 warps / inch, weft) made of a tape-like material (glass fiber volume content 45%) having a thickness of 0.1 mm and a width of 12 mm obtained by impregnating glass fibers with polypropylene resin. 2 pieces / inch, basis weight 250 g / m 2 ) of molding material was prepared (woven fabric width 530 mm), and the direction of the weft was parallel to the axial direction of the mandrel on the tubular body forming mandrel (diameter 400 mm, length 500 mm). It was wound so as to be laminated by 7 layers, and a polyethylene terephthalate film (width 20 mm) was wound on it. In addition,
The tape-like material used here had a degree of impregnation of about 80%. Next, the tape in the circumferential direction of the molding material protruding from the mandrel to which the warp and the weft were appropriately adhered by using a soldering iron (set surface temperature of about 280 ° C.) having a widthwise end of 30 mm in advance. The strip-like material was cut and the axial tape-like material was spread radially. Install the mandrel so that this part contacts the flange forming plate,
A polyimide film (a side of about 700 mm and a thickness of about 200 μm) having a circular hole of 00 mm was placed so as to come into contact with the tape-shaped material on the flange forming plate. Further, on the flange forming plate, a flange outer peripheral forming mandrel (inner diameter 460 m
m) is installed, metal powder (average particle diameter of about 0.1 mm) is spread between the tubular body forming mandrel and the flange forming mandrel, a flange pressing plate is installed, and the pressure against the flange forming portion is 5 kgf / cm. The weight was installed so that it would be 2 . Then, these are put into a hot-air circulation type heating furnace (internal temperature of 240 ° C.), and after the molding material reaches about 240 ° C., the state is maintained for 10 minutes and then taken out from the heating furnace. After naturally cooling to 0 ° C., the molded product was removed to obtain a tubular body with a flange having a tubular body diameter of 400, a length of 500 mm, and a flange width of 30 mm.
【００２４】[0024]
【実施例２】実施例１と同じ織物成形材料（幅５３０ｍ
ｍ）について、幅方向の端を３０ｍｍだけ半田こて（設
定表面温度約２８０℃）を用いて適当に経糸と緯糸を接
着させた。その後、その部分について長さ３０ｍｍだけ
鋏で経糸を切断してから、経糸を周方向に７層になるよ
う（直径約４００ｍｍ）該成形材料を丸めて、フランジ
付き管状体成形型（内径約４００ｍｍ、管状体長さ約５
００ｍｍ）の中に設置した。そして、該成形材料の内側
にシリコンゴムチュ−ブ（直径４００ｍｍ、厚さ約２ｍ
ｍ）を設置し、該型全体を加熱した（成形材料温度約２
４０℃）後、シリコンチュ−ブ内に気体（窒素ガス、約
１０ｋｇｆ／ｃｍ2 ）を封入し、約１０分間保持した。
その後、該型全体を温度７０℃まで自然冷却し、成形品
を取り外した。この成形品を修正枠に取り付け、熱風循
環式加熱炉（設定温度２００℃）に約１時間いれた後、
７０℃まで自然冷却し、フランジ付き管状体を得た。Example 2 The same fabric molding material as in Example 1 (width 530 m
For m), the warp yarn and the weft yarn were appropriately adhered to each other by using a soldering iron (set surface temperature of about 280 ° C.) having a widthwise end of 30 mm. After that, the warp is cut with scissors at a length of 30 mm for that portion, and then the molding material is rolled so that the warp has seven layers in the circumferential direction (diameter about 400 mm), and a tubular body forming mold with a flange (inner diameter about 400 mm). , Tubular length about 5
00 mm). Then, a silicone rubber tube (diameter 400 mm, thickness about 2 m) is formed inside the molding material.
m) was installed and the entire mold was heated (molding material temperature of about 2
After 40 ° C.), a gas (nitrogen gas, about 10 kgf / cm 2 ) was enclosed in the silicon tube and kept for about 10 minutes.
Then, the entire mold was naturally cooled to a temperature of 70 ° C., and the molded product was removed. After attaching this molded product to the correction frame and putting it in a hot air circulation type heating furnace (set temperature 200 ° C) for about 1 hour,
It was naturally cooled to 70 ° C. to obtain a tubular body with a flange.
【００２５】[0025]
【実施例３】実施例１と同じ織物成形材料（幅５３０ｍ
ｍ、長さ３７５ｍｍ）の幅方向の一端３０ｍｍと長さ方
向の両端３０ｍｍずつを半田こて（設定表面温度約２８
０℃）を用いて適宜に経糸と緯糸を接着させ、長さ方向
のみ幅方向の強化繊維を３０ｍｍだけ鋏で切断した。そ
して、これを７層積層したものを遠赤外線ヒ−タ（設定
３００℃）で約９０秒加熱し、フランジ付き管状予備体
成形型（半径２００ｍｍ、弦長４２０ｍｍ、長さ５６０
ｍｍ、フランジ３０ｍｍ、設定表面温度７０℃）に設置
し、成形圧力１０ｋｇｆ／ｃｍ2 で約１分間押圧した
後、成形品を取り出した。この成形品を修正枠に取り付
け、熱風循環式加熱炉（設定温度２００℃）に約１時間
いれた後、７０℃まで自然冷却し、フランジ付き管状予
備体を取り出した。そして、上記管状予備体４個をフラ
ンジで併せ（接合部を接着状態向上の特殊処理を施した
後、フランジを再度２２０℃で加熱・押圧して接合）フ
ランジ付き管状体を得た。このように、スタンピング成
形を行っても、実施例１及び２でのシートワインディン
グ成形及び内圧成形と同様に、良好なフランジ付き管状
体を得ることができた。[Example 3] The same fabric molding material as in Example 1 (width: 530 m)
m, length 375 mm) with a widthwise end 30 mm and lengthwise ends 30 mm each at a soldering iron (set surface temperature of about 28 mm).
The warp yarn and the weft yarn were appropriately adhered to each other at 0 ° C., and the reinforcing fiber in the width direction only in the length direction was cut by scissors by 30 mm. Then, a laminate of 7 layers was heated with a far-infrared heater (setting 300 ° C.) for about 90 seconds to form a tubular preliminary body forming mold with a flange (radius 200 mm, chord length 420 mm, length 560).
mm, flange 30 mm, set surface temperature 70 ° C.), and pressed at a molding pressure of 10 kgf / cm 2 for about 1 minute, the molded product was taken out. This molded product was attached to a correction frame, put in a hot-air circulation type heating furnace (set temperature of 200 ° C.) for about 1 hour, then naturally cooled to 70 ° C., and the flanged tubular preliminary body was taken out. A tubular body with a flange was obtained by combining the above four tubular preliminary bodies with a flange (after performing a special treatment for improving the bonding state of the bonded portion, the flange was heated and pressed again at 220 ° C. to be bonded). As described above, even if the stamping molding was performed, a good flanged tubular body could be obtained as in the sheet winding molding and the internal pressure molding in Examples 1 and 2.
【００２６】[0026]
【比較例１】実施例１と同じ織物（織物幅５００ｍｍ）
を実施例１と同様に管状体形成マンドレルに７層分だけ
積層されるよう巻き付け、その上からポリエチレンテレ
フタレ−トのフィルム（幅２０ｍｍ）を巻き付けた後、
これらを熱風循環式の加熱炉（炉内温度２４０℃）に投
入し、該成形材料が約２４０℃に到達後、１０分間だけ
状態を保持してから加熱炉から取り出し、該マンドレル
の温度が約７０℃になるまで自然冷却し、管状体成形品
を取り外した。また、実施例１と同じ織物を外径４６０
ｍｍ、内径４００ｍｍに切り出して７層積層したものを
遠赤外線ヒ−タ（設定３００℃）で約９０秒加熱し、フ
ランジ成形用平板（設定表面温度７０℃）に設置し、成
形圧力１０ｋｇｆ／ｃｍ2 で約１分間押圧した後、フラ
ンジ成形品を取り出した。そして、該管状体成形品と該
フランジ成形品の接合部を接着状態向上の特殊処理を施
した後にエポキシ系接着剤を用いて接合し、フランジ付
き管状体を得た。Comparative Example 1 The same woven fabric as in Example 1 (woven fabric width 500 mm)
Was wound on the tubular body forming mandrel in the same manner as in Example 1 so as to be laminated by 7 layers, and a polyethylene terephthalate film (width 20 mm) was wound on the mandrel.
These are put into a hot air circulation type heating furnace (internal temperature of 240 ° C.), and after the molding material reaches about 240 ° C., the state is held for 10 minutes and then taken out from the heating furnace. The product was naturally cooled to 70 ° C., and the tubular body molded product was removed. In addition, the same woven fabric as in Example 1 has an outer diameter of 460.
mm, an inner diameter of 400 mm, and a stack of 7 layers are heated with a far infrared heater (setting 300 ° C.) for about 90 seconds and placed on a flange forming flat plate (setting surface temperature 70 ° C.), forming pressure 10 kgf / cm. After pressing with 2 for about 1 minute, the flange molded product was taken out. Then, the joint between the tubular molded product and the flange molded product was subjected to a special treatment for improving the adhesion state, and then bonded using an epoxy adhesive to obtain a tubular product with a flange.
【００２７】[0027]
【比較例２】ガラス繊維の平織織物（経糸８本／吋、緯
糸８本／吋、目付１８０ｇ／ｍ2 ）に半硬化の不飽和ポ
リエステル樹脂を含浸させ成形材料（ガラス繊維の体積
含有率４５％）を準備し（織物幅５００ｍｍ）、比較例
１と同様に管状体形成マンドレルに７層分だけ積層され
るよう巻き付け、その上からポリエチレンテレフタレ−
トのフィルム（幅２０ｍｍ）を巻き付けた。なお、ここ
で用いた成形材料の含浸度は約８０％であった。そし
て、比較例１と同様に熱風循環式の加熱炉（炉内温度１
００℃）に投入し、該成形材料が約１００℃に到達後、
１２０分間だけ状態を保持してから加熱炉から取り出
し、温度が約５０℃になるまで自然冷却してから、成形
品を取り外した。また、上記織物を外径４６０ｍｍ、内
径４００ｍｍに切り出して７層積層したものをフランジ
成形用平板（設定表面温度１００℃）に設置し、成形圧
力２０ｋｇｆ／ｃｍ2 で１２０分間押圧した後、フラン
ジ成形品を取り出した。そして、該管状体成形品と該フ
ランジ成形品の接合部をエポキシ系接着剤を用いて接合
し、管状体直径４００、長さ５００ｍｍ、フランジ幅３
０ｍｍのフランジ付き管状体を得た。[Comparative Example 2] A plain woven fabric of glass fibers (8 warps / inch, 8 wefts / inch, and basis weight of 180 g / m 2 ) was impregnated with a semi-cured unsaturated polyester resin to obtain a molding material (glass fiber volume content 45 %) Was prepared (woven fabric width: 500 mm), and was wound around a tubular body forming mandrel so as to be laminated by 7 layers in the same manner as in Comparative Example 1, and polyethylene terephthalate
Film (width 20 mm) was wrapped. The degree of impregnation of the molding material used here was about 80%. Then, as in Comparative Example 1, a hot-air circulation type heating furnace (internal temperature 1
00 ° C.), after the molding material reaches about 100 ° C.,
After holding the state for only 120 minutes, it was taken out of the heating furnace, naturally cooled until the temperature reached about 50 ° C., and then the molded product was removed. Also, the above woven fabric was cut into an outer diameter of 460 mm and an inner diameter of 400 mm and laminated with 7 layers, and placed on a flange forming flat plate (set surface temperature 100 ° C.) and pressed at a forming pressure of 20 kgf / cm 2 for 120 minutes, and then flange formed. I took out the item. Then, the joint portion of the tubular body molded article and the flange molded article is joined by using an epoxy adhesive to form a tubular body diameter 400, a length 500 mm, and a flange width 3
A tubular body with a 0 mm flange was obtained.
【００２８】[0028]
【表１】 [Table 1]
【００２９】[0029]
【発明の効果】上記で説明したように本発明は、成形が
容易な上、力学的に優れた強度を有し、特に管状体とフ
ランジの境界部分の強度が優れたフランジ付き管状体、
並びに、該フランジ付き管状体の成形方法を提供するも
のである。すなわち、本発明のフランジ付き管状体は、
フランジにより管状体を接合するためサイズに関係なく
採用でき、その材質が繊維強化熱可塑性樹脂であるため
金属製のものに比べ非常に軽く取扱いが容易であり且つ
耐腐食性や力学的強度に優れることは当然として、特に
管状体とフランジの境界部分の強度が優れているため、
あらゆる分野、例えば工業用ならびに家庭用の排水管、
オイルコンビナ−トなどの油送管、液状高分子材料や液
化天然ガス、液体窒素、加熱蒸気などの配管のような液
体や気体を輸送するための配管やプラスチックのペレッ
ト、燃焼物の灰、魚粉などの粒粉末、鉱石、砂利、石炭
などの比較的小さい固形状物、コンクリート、建築材料
などの廃材のように大型の固形状物を輸送するための配
管などに適用することが可能である。このように、本発
明の意義は大きく、本発明の効果は極めて大である。INDUSTRIAL APPLICABILITY As described above, according to the present invention, a tubular body with a flange, which is easy to mold and has mechanically excellent strength, in particular, strength at a boundary portion between the tubular body and the flange,
In addition, the present invention provides a method for molding the tubular body with the flange. That is, the tubular body with a flange of the present invention,
It can be used regardless of size because it joins tubular bodies with a flange, and because it is a fiber reinforced thermoplastic resin, it is much lighter and easier to handle than metal ones, and it has excellent corrosion resistance and mechanical strength. Of course, because the strength of the boundary between the tubular body and the flange is excellent,
Drainage pipes in all areas, for example industrial and domestic,
Pipes for transporting liquids and gases, such as oil delivery pipes such as oil combinators, pipes for liquid polymer materials and liquefied natural gas, liquid nitrogen, heating steam, pellets of plastics, ash of combustion products, fish meal It is applicable to pipes for transporting granular powder such as ore, relatively small solid matter such as ore, gravel, and coal, and large solid matter such as waste materials such as concrete and building materials. As described above, the significance of the present invention is great, and the effect of the present invention is extremely large.
Claims (10)
料を成形してなることを特徴とするフランジ付き管状
体。1. A tubular body with a flange, which is formed by molding a composite material composed of reinforcing fibers and a thermoplastic resin.
部分に連続して存在することを特徴とする請求項１記載
のフランジ付き管状体。2. The tubular body with a flange according to claim 1, wherein a part of the reinforcing fibers is continuously present in the tubular body portion and the flange portion.
置関係にあることを特徴とする請求項１叉は請求項２の
いずれか１項記載のフランジ付き管状体。3. The flanged tubular body according to claim 1, wherein a part of the reinforcing fibers is in a positional relationship parallel to the axis of the tubular body.
ことを特徴とする請求項１乃至請求項３のいずれか１項
記載のフランジ付き管状体。4. The tubular body with a flange according to claim 1, wherein a part of the reinforcing fibers constitutes a woven structure.
部分に連続して存在し、且つ、管状体の軸と平行な位置
関係にあることを特徴とする請求項１叉は請求項４のい
ずれか１項記載のフランジ付き管状体。5. The method according to claim 1 or 4, wherein a part of the reinforcing fiber is present continuously in the tubular body portion and the flange portion and is in a positional relationship parallel to the axis of the tubular body. A tubular body with a flange according to any one of 1.
部分に連続して存在し、且つ、織構造を構成しているこ
とを特徴とする請求項１叉は請求項３のいずれか１項記
載のフランジ付き管状体。6. The reinforcing fiber according to claim 1, wherein a part of the reinforcing fiber is continuously present in the tubular body part and the flange part and constitutes a woven structure. A tubular body with a flange according to the item.
部分に連続して存在し、且つ、管状体の軸と平行な位置
関係にあり、且つ、織構造を構成していることを特徴と
する請求項１記載のフランジ付き管状体。7. A part of the reinforcing fiber is continuously present in the tubular body portion and the flange portion, is in a positional relationship parallel to the axis of the tubular body, and constitutes a woven structure. The tubular body with a flange according to claim 1.
をフランジに成形する工程とからなることを特徴とする
請求項１から請求項７のいずれか１項記載のフランジ付
き管状体の成形方法。8. The flanged tubular body according to any one of claims 1 to 7, comprising a step of shaping the tubular body and a step of shaping a part of the tubular body into a flange. Molding method.
し、且つ、管状体の周方向に位置する強化繊維を切断す
ることを特徴とする請求項８記載のフランジ付き管状体
の成形方法。9. The method for molding a tubular body with a flange according to claim 8, wherein the reinforcing fibers that are present in a part of the tubular body to be molded into the flange and that are located in the circumferential direction of the tubular body are cut. .
在し、且つ、管状体の周方向に位置する強化繊維を間引
くことを特徴とする請求項８叉は請求項９のいずれか１
項記載のフランジ付き管状体の成形方法。10. The reinforcing fiber existing in a part of the tubular body to be molded into the flange and located in the circumferential direction of the tubular body is thinned out, according to any one of claims 8 and 9.
A method for forming a tubular body with a flange according to the item.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5324647A JPH07178835A (en) | 1993-12-22 | 1993-12-22 | Tubular body with flange and its molding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5324647A JPH07178835A (en) | 1993-12-22 | 1993-12-22 | Tubular body with flange and its molding method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07178835A true JPH07178835A (en) | 1995-07-18 |
Family
ID=18168163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5324647A Pending JPH07178835A (en) | 1993-12-22 | 1993-12-22 | Tubular body with flange and its molding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07178835A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011111564A1 (en) * | 2010-03-11 | 2011-09-15 | 村田機械株式会社 | Method for producing reinforcement fiber preform, and reinforcement fiber preform |
| JP2012051361A (en) * | 2010-08-05 | 2012-03-15 | Sekisui Chem Co Ltd | Method of manufacturing multi-layer tube with flange and multi-layer tube with flange |
| JP2014105414A (en) * | 2012-11-29 | 2014-06-09 | Toyota Industries Corp | Cylindrical fiber structure |
-
1993
- 1993-12-22 JP JP5324647A patent/JPH07178835A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011111564A1 (en) * | 2010-03-11 | 2011-09-15 | 村田機械株式会社 | Method for producing reinforcement fiber preform, and reinforcement fiber preform |
| JP2012051361A (en) * | 2010-08-05 | 2012-03-15 | Sekisui Chem Co Ltd | Method of manufacturing multi-layer tube with flange and multi-layer tube with flange |
| JP2014105414A (en) * | 2012-11-29 | 2014-06-09 | Toyota Industries Corp | Cylindrical fiber structure |
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