JP3306959B2 - Method for producing long fiber reinforced synthetic resin strand - Google Patents

Method for producing long fiber reinforced synthetic resin strand

Info

Publication number
JP3306959B2
JP3306959B2 JP04155493A JP4155493A JP3306959B2 JP 3306959 B2 JP3306959 B2 JP 3306959B2 JP 04155493 A JP04155493 A JP 04155493A JP 4155493 A JP4155493 A JP 4155493A JP 3306959 B2 JP3306959 B2 JP 3306959B2
Authority
JP
Japan
Prior art keywords
synthetic resin
long fiber
resin
outlet nozzle
fibers
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
Application number
JP04155493A
Other languages
Japanese (ja)
Other versions
JPH06254851A (en
Inventor
良策 門脇
孝一 橋本
博樹 古賀
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP04155493A priority Critical patent/JP3306959B2/en
Publication of JPH06254851A publication Critical patent/JPH06254851A/en
Application granted granted Critical
Publication of JP3306959B2 publication Critical patent/JP3306959B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は長繊維で強化されたスト
ランド状合成樹脂材料を効率良く製造する方法に関する
ものである。上記ストランド状材料はこれをそのまま利
用することも可能であるが、使用目的に合わせて任意長
さに切断して利用することもできる。後者の一例として
は射出成形、射出圧縮成形、圧縮成形等の原料として使
用されるペレット状材料を挙げることができ、この場合
は数mmから十数mmの長さに切断して使用するのが一
般的である。本明細書では前者を長繊維強化合成樹脂ス
トランド(以下単に長繊維ストランドと言うこともあ
る)、また後者を長繊維強化合成樹脂ペレット(以下単
に長繊維ペレットと言うこともある)として区分する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for efficiently producing a strand-like synthetic resin material reinforced with long fibers. The strand-like material can be used as it is, or can be used after being cut to an arbitrary length according to the purpose of use. An example of the latter is a pellet-shaped material used as a raw material for injection molding, injection compression molding, compression molding, and the like. In this case, cutting to a length of several mm to several tens of mm can be used. General. In the present specification, the former is classified as a long fiber reinforced synthetic resin strand (hereinafter sometimes simply referred to as a long fiber strand), and the latter is classified as a long fiber reinforced synthetic resin pellet (hereinafter sometimes simply referred to as a long fiber pellet).

【0002】[0002]

【従来の技術】繊維強化樹脂材料を例えば射出成形して
希望形状の成形品を製造したい場合は、合成樹脂中に強
化繊維を含有させてなるペレット状原料が使用される。
この様なペレット状原料中に含まれる強化繊維は一般に
短繊維であるが、近年長繊維を一方向に揃えた状態で合
成樹脂を含浸させたもの、即ち前記長繊維ペレットが開
発され、高強度射出成形品等を製造する為の原材料とし
て評価されている。
2. Description of the Related Art When it is desired to produce a molded article having a desired shape by, for example, injection molding a fiber-reinforced resin material, a pellet-like raw material in which a reinforcing resin is contained in a synthetic resin is used.
The reinforcing fibers contained in such a pellet-shaped raw material are generally short fibers, but in recent years, those obtained by impregnating a synthetic resin with long fibers aligned in one direction, that is, the long fiber pellets have been developed and have a high strength. It is evaluated as a raw material for manufacturing injection molded products.

【0003】これらを製造する方法としては、強化用繊
維(以下ロービングと言うことがある)を束ねて導入し
開繊状態で走行させる含浸ヘッドの側面に、スクリュー
型もしくはプランジャー型押出装置の樹脂液吐出口を臨
設し、上記含浸ヘッド内に圧入されて形成される溶融合
成樹脂浴中に前記ロービングを通すことによって含浸を
行なわせる。そして樹脂含浸ロービングは含浸ヘッドの
出口ノズルから引取られ、樹脂材料を硬化させつつこれ
を巻取って前記長繊維ストランドとするが、これは前述
の如く任意長さに切断され、前記長繊維ペレットとする
こともできる。
[0003] As a method for producing these, a reinforcing fiber (hereinafter sometimes referred to as roving) is bundled and introduced, and a resin of a screw type or plunger type extruder is provided on a side surface of an impregnating head which is run in an opened state. A liquid discharge port is provided, and impregnation is performed by passing the roving through a molten synthetic resin bath formed by being pressed into the impregnation head. Then, the resin impregnated roving is taken out from the outlet nozzle of the impregnation head, and while the resin material is being hardened, it is wound up to obtain the long fiber strand, which is cut into an arbitrary length as described above, and the long fiber pellet is cut. You can also.

【0004】上記強化用繊維は、素材、直径、一束の本
数など特に制限されるものではなく、例えばガラス繊
維、炭素繊維、有機繊維、金属繊維などが自由に選択さ
れ得る。また合成樹脂材料も限定されず、熱可塑性樹
脂、熱硬化性樹脂のいずれを使用することも可能である
とされている。
[0004] The reinforcing fibers are not particularly limited in terms of material, diameter, number of bundles and the like, and for example, glass fibers, carbon fibers, organic fibers, metal fibers and the like can be freely selected. Further, the synthetic resin material is not limited, and any of a thermoplastic resin and a thermosetting resin can be used.

【0005】[0005]

【発明が解決しようとする課題】上記方法は粘稠な溶融
樹脂浴中に長繊維を含浸させながらこれを引取っていく
ものであるから、生産性向上という観点から見ると、こ
のときの引取抵抗を軽減させることが重要な課題とな
る。引取抵抗を少なくするためには溶融樹脂浴の粘度を
下げることが第1番に考えられるが、合成樹脂を高い温
度に加熱し過ぎると熱分解を招き易くなるという問題が
あり、溶融樹脂浴の加熱温度を高めることには大きな制
限がある。一方大きな抵抗を無視して引取速度を上げ過
ぎると、長繊維に大きな引張力が作用して切断事故を発
生する危険があり、長繊維の束が全部切断する大事故に
至らなくとも、束の中の1〜数本が切断して後述する様
なケバ立ちの問題生じ生産中断を余儀なくされることが
ある。
In the above-mentioned method, the long fibers are taken out while impregnating the long fibers in a viscous molten resin bath. Reducing resistance is an important issue. In order to reduce the take-off resistance, the first thought is to lower the viscosity of the molten resin bath. However, if the synthetic resin is heated to an excessively high temperature, there is a problem that thermal decomposition easily occurs, and the molten resin bath has a problem. There is a major limitation on increasing the heating temperature. On the other hand, if the take-up speed is too high ignoring the large resistance, there is a danger that a large tensile force will act on the long fibers and a cutting accident may occur. One or a few of them may be cut off, resulting in a problem of fluffing as described later, which may necessitate interruption of production.

【0006】例えば現実の生産工程では生産開始後、ほ
どなく長繊維の引取抵抗が増大し、ときには2〜3時間
で引取不能となって生産中断に至ることがあった。この
様な場合に含浸ヘッドを分解検査してみると、含浸ヘッ
ド内では出口ノズルおよびその上流側に繊維の団塊(例
えば炭素繊維を用いたものでは真黒な団塊)が充満して
おり、これらの団塊は含浸ヘッド内に配置される開繊・
含浸ローラを巻込んで形成される。従って含浸ヘッドを
再使用する為にはこれを完全分解して清浄化する必要が
あり、2組以上の含浸ヘッドを準備してこれらを交代で
使用することとしても、生産性の低下は極めて大きなも
のとならざるを得なかった。
For example, in the actual production process, after the start of production, the take-off resistance of the long fiber increases shortly, and in some cases, the take-off becomes impossible in a few hours and the production is interrupted. In such a case, when the impregnating head is disassembled and inspected, the outlet nozzle and the upstream side thereof are filled with fiber aggregates (for example, black aggregates using carbon fibers) in the impregnation head. The nodules are placed in the impregnation head.
It is formed by winding an impregnating roller. Therefore, in order to reuse the impregnating head, it is necessary to completely disassemble and clean the impregnating head. Even if two or more sets of impregnating heads are prepared and used alternately, the decrease in productivity is extremely large. It had to be something.

【0007】本発明者らは連続生産中に長繊維の引取抵
抗が増大し、遂には引取不能となる原因を調査研究する
ため、透明素材で構成した含浸ヘッドを用い、種々の角
度から検討した。その結果、引取速度を高め過ぎると、
走行する長繊維束からケバ立ちが生じ、このケバが出口
ノズルの直前に引寄せられて絡み合い、これが短時間の
内に次々と成長して前記団塊が形成されていくことが分
かった。
[0007] The inventors of the present invention used an impregnating head made of a transparent material and studied it from various angles in order to investigate and study the cause of an increase in the take-up resistance of the long fiber during continuous production, and eventually the drawback. . As a result, if the take-up speed is too high,
It was found that fluffing occurred from the running long fiber bundle, and the fluff was drawn immediately before the outlet nozzle and became entangled with the fluff, which grew one after another in a short time to form the above-mentioned lump.

【0008】本発明はこの様な不都合を解消すべくなさ
れたものであって、長繊維の引取り速度を希望速度まで
高めて生産性の向上を図りたい場合であっても、長繊維
の引取りを長時間に亘って不都合なく連続して行なうこ
とができる方法を確立しようとするものである。
The present invention has been made to solve such inconvenience. Even when it is desired to increase the long fiber take-up speed to a desired speed and to improve the productivity, the long fiber is drawn. An object of the present invention is to establish a method in which the picking can be performed continuously without any inconvenience over a long period of time.

【0009】[0009]

【課題を解決するための手段】上記目的を達成すること
のできた本発明の方法は、前記合成樹脂浴容器を筒形で
構成すると共に、前記出口ノズルが下方となる様に該筒
形容器を傾斜して配置し、長繊維を斜め上方から斜め下
方に向けて走行させる一方、該出口ノズルの近傍から溶
融合成樹脂を注入して該筒形容器の上方端近傍から溶融
合成樹脂をオーバーフローさせながら樹脂含浸を行わせ
ることを要旨とするものである。
According to the method of the present invention which can achieve the above object, the synthetic resin bath container is formed in a cylindrical shape, and the cylindrical container is formed so that the outlet nozzle is located downward. While arranging it in an inclined manner and running the long fiber obliquely downward and obliquely downward, while injecting the molten synthetic resin from near the outlet nozzle and overflowing the molten synthetic resin from near the upper end of the cylindrical container, It is intended to impregnate the resin.

【0010】この構成を採用することによって溶融樹脂
浴による抵抗がかなり減少し、長繊維のケバ立ちを生じ
ない臨界引取速度が高くなって生産性の向上に寄与し得
ることとなった。ところが、この様な場合であっても、
引取速度を更に高めていくと、開繊・含浸用ローラを通
過する過程または含浸ヘッドの出口ノズルから引取られ
ていくときの摩擦やしごき等によって長繊維束からケバ
立ちを生じることがあり、前記した理由により長時間に
亘る連続引取りが不可能になることがある。そこで更に
検討した結果樹脂含浸長繊維を、撚りを掛けた状態で引
取れば、前記ケバ立ちが撚りの中に取込まれて出口ノズ
ル外へ引出され、上記した様な引取り不能の事態に陥ら
ないで済むことが分かった。
By adopting this configuration, the resistance of the molten resin bath is considerably reduced, and the critical take-off speed at which the long fibers do not fluff is increased, which can contribute to the improvement of productivity. However, even in such a case,
If the take-up speed is further increased, fluffing may occur from the long fiber bundle due to friction or ironing during the process of passing through the opening / impregnating roller or being taken out from the outlet nozzle of the impregnating head. For some reasons, continuous pick-up over a long period of time may not be possible. Therefore, as a result of further study, if the resin-impregnated long fiber is taken up in a twisted state, the fluffing is taken in the twist and pulled out of the outlet nozzle, and the above-mentioned situation in which the take-out cannot be taken out. I knew I didn't fall.

【0011】[0011]

【作用】合成樹脂浴容器(含浸ヘッド)を筒型とすると
共に、出口ノズルが下方側となる様な傾斜配置とした意
義について説明する。この様な傾斜配置を採用する以前
は一般に水平配置と垂直配置が行なわれていた。このう
ち水平配置の方式では溶融樹脂の圧入口とロービングの
導入口が対向位置に設けられ、溶融樹脂がロービングの
引取方向と向流方向に流れることによって樹脂含浸を行
なわせるという認識が一般的であった。しかるに含浸ヘ
ッドを水平配置としたものでは、溶融樹脂の圧入口と溢
出口が実質的に同一高さとなるため、含浸ヘッド内を溶
融樹脂で満たしておくためには溶融樹脂の圧入量を多く
しなければならず、その結果溢出口からの樹脂溢出量が
増加し、必然的に含浸ヘッド内の溶融樹脂流れがかなり
早くなる。従って引取走行中のロービングは対向側から
流れてくる高粘性溶融樹脂による大きな抵抗を受け、記
述の如く切断やケバ立ち等のトラブルを発生し易い状態
が形成されていたのである。なお水平配置方式では含浸
ヘッドが横向きとなる為、該ヘッド内での静水圧が低く
ならざるを得ず、溶融樹脂の重量による加圧含浸効果は
期待できず、従って含浸性が悪いという欠点もあった。
The significance of using a synthetic resin bath container (impregnation head) in a cylindrical shape and an inclined arrangement such that the outlet nozzle is on the lower side will be described. Before adopting such an inclined arrangement, horizontal arrangement and vertical arrangement were generally performed. Among these, in the horizontal arrangement, the pressure inlet of the molten resin and the inlet of the roving are provided at opposing positions, and it is generally recognized that the resin impregnation is performed by flowing the molten resin in the direction of taking the roving and in the countercurrent direction. there were. However, in the case where the impregnation head is arranged horizontally, the pressure inlet and the overflow of the molten resin are substantially at the same height.Therefore, in order to fill the inside of the impregnation head with the molten resin, the injection amount of the molten resin is increased. This has the consequence that the amount of resin spilled out of the overflow increases and inevitably the flow of molten resin in the impregnation head is considerably faster. Therefore, the roving during the take-off travel receives a large resistance due to the high-viscosity molten resin flowing from the opposite side, so that a state in which a trouble such as cutting or flapping easily occurs as described above. In the horizontal arrangement method, the impregnating head is oriented sideways, so that the hydrostatic pressure in the head must be low, and the pressure impregnation effect due to the weight of the molten resin cannot be expected. there were.

【0012】一方垂直配置では溶融樹脂の圧入口が含浸
ヘッドの下端となり、ロービングは上から下へ向って引
取られる。従って含浸ヘッド内には下から押込まれて必
要液位まで満たされた溶融樹脂が静置状態を維持し、そ
の中をロービングが走行するだけであるので、水平配置
の場合に述べた様な流れ抵抗による切断やケバ立ちを生
じない。また液位も十分高くとれるので、静水圧が確保
され、含浸性が良好になるという利点も発揮される。し
かしながら溶融樹脂の流れが少なくなるということは、
含浸ヘッド内で溶融樹脂の停滞部を生じることを意味
し、高熱での保持時間が長くなって樹脂の熱劣化を招く
危険が高まり、却って物性低下を招き、且つせっかく可
能となった長時間連続操業を敢えて中断しなければなら
なくなるという不都合を招く。また垂直配置では、長繊
維ストランドが出口ノズルから垂直に下方へ引き出され
るため、引取機構部材をさらに下方へ取り付ける必要が
あることから、含浸ヘッドを高所に取り付けなければな
らない等、操業管理上また装置メンテナンス上の不都合
を生ずる。そこで長繊維ストランドを含浸ヘッドが出た
直後に大きく曲げて水平方向に引き取ることも考えられ
るが、不必要な力を長繊維ストランドに与えなければな
らないという欠点がある。
On the other hand, in the vertical arrangement, the pressure inlet of the molten resin becomes the lower end of the impregnation head, and the roving is taken from top to bottom. Therefore, the molten resin that has been pushed into the impregnating head from below and filled to the required liquid level maintains a stationary state, and only the roving runs in the molten resin. Does not cause cutting or fluffing due to resistance. In addition, since the liquid level can be sufficiently high, the hydrostatic pressure is ensured, and the advantages that the impregnation property is improved are also exhibited. However, the reduced flow of the molten resin means that
Means that stagnation of molten resin occurs in the impregnation head, which increases the dwell time of holding at high heat and increases the risk of causing thermal degradation of the resin. The disadvantage is that the operation must be interrupted. Also, in the vertical arrangement, the long fiber strand is drawn vertically downward from the outlet nozzle, so that the take-off mechanism member needs to be mounted further downward. This causes inconvenience in device maintenance. Therefore, it is conceivable that the long fiber strand is largely bent immediately after the impregnating head comes out and is taken in the horizontal direction, but there is a disadvantage that unnecessary force must be applied to the long fiber strand.

【0013】これらに対し本発明の傾斜配置では、溶融
樹脂の流れ抵抗は水平配置の場合より少なくなり、静水
圧の利用効果は水平配置の場合より良くなり、熱劣化の
危険は垂直配置の場合より改善されるといった優れた効
果が得られる。特に圧入樹脂の一部を傾斜配置の上方端
から溢出させることにより、古い樹脂が新しい樹脂によ
って押し上げられ且つ排出されていくことになるので、
熱劣化の恐れは殆んどなくなる。
On the other hand, in the inclined arrangement of the present invention, the flow resistance of the molten resin is smaller than in the case of the horizontal arrangement, the effect of using the hydrostatic pressure is better than in the case of the horizontal arrangement, and the risk of thermal degradation is lower in the case of the vertical arrangement. Excellent effects such as further improvement can be obtained. In particular, by causing a part of the press-fit resin to overflow from the upper end of the inclined arrangement, the old resin is pushed up and discharged by the new resin.
The risk of thermal degradation is almost eliminated.

【0014】本発明の好ましい態様を示すと、含浸ヘッ
ドの傾斜角度は水平線に対して3〜45°程度の傾斜が
好ましく、溶融樹脂は傾斜の下方側から圧入し、該圧入
口より高い位置にある上方端に溢出口を形成する。そし
てロービングは上方端から導入し、下方端の出口ノズル
から引出していく。
According to a preferred embodiment of the present invention, the angle of inclination of the impregnation head is preferably about 3 to 45 ° with respect to a horizontal line, and the molten resin is press-fitted from the lower side of the slope to a position higher than the press-in port. An overflow is formed at a certain upper end. The roving is introduced from the upper end and is drawn out from the outlet nozzle at the lower end.

【0015】上記構成によって引取速度を高めることへ
の障害は減少したが、生産性向上のために引取速度を更
に高めていくと記述の如く再びケバ立ちを生じる。それ
でこれを防止する為、前記した撚り与えながらの引取り
を行うことが推奨される。即ち含浸ヘッドの下流側に設
けられるロービング引取部材に撚りの付与機構(例えば
回転機構)を設け、樹脂含浸長繊維に撚りを掛けた状態
でこれを引取る。この様な撚りを掛けると、撚りは出口
ノズル孔を通して含浸ヘッドの中まで伝達され、該出口
ノズルの直前で絡み始めているケバを撚りの中に取込む
様にしてこれを出口ノズル外に引出す作用が発揮され
る。その結果出口ノズル直前での前記団塊の形成が防止
され、長時間に亘る連続操業を行なっても樹脂含浸長繊
維の引取りトラブルを生じず優れた生産性を発揮するこ
とができる。尚この様な撚りを付与すると、繊維間隙の
気泡を追い出し、且つ繊維間の溶融樹脂を強制移動させ
る力が働くので、樹脂の含浸性が高められるという効果
も合わせて得られる。
Although the above structure has reduced the obstacle to increasing the take-up speed, if the take-up speed is further increased to improve productivity, flapping occurs again as described. Therefore, in order to prevent this, it is recommended to carry out the above-mentioned twisting while giving. That is, a twisting mechanism (for example, a rotation mechanism) is provided on the roving take-off member provided on the downstream side of the impregnation head, and the resin impregnated filament is twisted and taken off. When such a twist is applied, the twist is transmitted into the impregnating head through the outlet nozzle hole, and the fluff that has begun to become entangled immediately before the outlet nozzle is taken out of the outlet nozzle by taking it into the twist. Is exhibited. As a result, the formation of the lumps immediately before the outlet nozzle is prevented, and even if continuous operation is performed for a long time, troubles in taking in the resin-impregnated long fibers do not occur and excellent productivity can be exhibited. When such a twist is applied, a force for expelling bubbles in the interstices of the fibers and forcibly moving the molten resin between the fibers acts, so that the effect of enhancing the impregnation property of the resin is also obtained.

【0016】[0016]

【実施例】図1は本発明を実施する為の装置を概念的に
示す側面視説明図、図2は平面視説明図である。これら
の図において、1は傾斜配置された含浸ヘッド(合成樹
脂浴容器)、2は溶融合成樹脂圧入口を示し、矢印Aか
ら送られてきたロービング3aは入口ノズル4から含浸
ヘッド1内に入り、溝付き開繊・含浸用ローラ6aおよ
び溝を設けていない通常の開繊・含浸用ローラ6bを順
次通過した後、ガイドローラ7及び収束用ローラ8を経
て出口ノズル5方向へ引取られる。一方溶融合成樹脂圧
入口2から矢印M方向に圧入された溶融合成樹脂が含浸
ヘッド1内に充満されているので、ロービング3aは前
記諸ローラを通過していく過程で樹脂含浸を受け、出口
ノズル5から樹脂含浸ロービング3bとして矢印B方向
へ引取られる。ロービング3aの供給量と溶融合成樹脂
の圧入量は均衡を保つ様に制御するが、本発明では後者
をやや過剰気味にして図1の矢印N方向へオーバーブロ
ーさせる。
1 is a side view explanatory view conceptually showing an apparatus for carrying out the present invention, and FIG. 2 is a plan view explanatory view. In these figures, reference numeral 1 denotes an impregnating head (synthetic resin bath vessel) which is arranged obliquely, 2 denotes a molten synthetic resin pressure inlet, and a roving 3a sent from an arrow A enters the impregnating head 1 from an inlet nozzle 4. After sequentially passing through the grooved opening / impregnating roller 6a and the normal opening / impregnating roller 6b having no groove, it is drawn through the guide roller 7 and the converging roller 8 toward the outlet nozzle 5. On the other hand, since the molten synthetic resin press-fitted in the direction of arrow M from the molten synthetic resin pressure inlet 2 is filled in the impregnating head 1, the roving 3a is impregnated with the resin while passing through the rollers, and the outlet nozzle 5 is taken in the direction of arrow B as a resin-impregnated roving 3b. The supply amount of the roving 3a and the injection amount of the molten synthetic resin are controlled so as to maintain a balance, but in the present invention, the latter is slightly excessively overblowed in the direction of arrow N in FIG.

【0017】上記の様に矢印B方向へ引取られる樹脂含
浸ロービング3bは図示しない撚り発生器によって矢印
Cの様に回転し、該回転によって形成された撚りは矢印
Bと反対方向に進んで収束用ローラ8に至る。従って樹
脂含浸ロービング3bは収束用ローラ8より下流側を出
発点として撚りが生成・成長する。従って含浸ヘッド1
内で発生しロービング3aの走行につれて出口ノズル5
方向へ引き寄せられていたケバ、或は出口ノズル5との
摺擦によって発生したケバは前記生成・成長過程にある
撚りの中へ巻き込まれ、出口ノズル5から引取られてい
く樹脂含浸ロービング3bに伴われて出口ノズル5外へ
引き出され長繊維ストランドが製造される。その為含浸
ヘッド1内にケバが残されることはなく繊維の団塊が生
じることもない。
The resin impregnated roving 3b drawn in the direction of arrow B as described above is rotated by a twist generator (not shown) as shown by arrow C, and the twist formed by the rotation proceeds in the direction opposite to arrow B to converge. The roller 8 is reached. Accordingly, twists are generated and grown in the resin-impregnated roving 3b starting from the downstream side of the converging roller 8. Therefore impregnation head 1
Exit nozzle 5 as the roving 3a travels
The fluff drawn in the direction or the fluff generated by rubbing with the outlet nozzle 5 is entrained into the twist in the above-mentioned generation / growth process and is accompanied by the resin impregnated roving 3b drawn from the outlet nozzle 5. Then, it is drawn out of the outlet nozzle 5 to produce a long fiber strand. Therefore, no fluff is left in the impregnation head 1 and no lump of fibers is generated.

【0018】[0018]

【発明の効果】本発明は上記の様に構成されているの
で、樹脂含浸長繊維を高速で引取っても、長繊維の切断
やケバ立ちを少なくすることができ、且つ溶融樹脂の熱
分解を生じることはない。その為含浸ヘッド内で繊維の
絡み合いが成長することはない。従って繊維の団塊によ
る引取抵抗の増大、或は引取不能に陥ることもなく、優
れた生産性を長時間に亘って維持することができる。
The present invention is configured as described above, so that even if the resin-impregnated long fibers are taken at a high speed, cutting and fluffing of the long fibers can be reduced, and thermal decomposition of the molten resin can be achieved. Does not occur. Therefore, the entanglement of the fibers does not grow in the impregnation head. Therefore, excellent productivity can be maintained for a long time without increasing the take-up resistance due to the fiber lumps or preventing the fibers from being taken out.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明を実施する為の装置の側面視説明図。FIG. 1 is a side view explanatory view of an apparatus for carrying out the present invention.

【図2】本発明を実施する為の装置の平面視説明図。FIG. 2 is an explanatory plan view of an apparatus for carrying out the present invention.

【符号の説明】[Explanation of symbols]

1 含浸ヘッド(合成樹脂浴容器) 2 溶融合成樹脂圧入口 3a ロービング 3b 樹脂含浸ロービング 4 入口ノズル 5 出口ノズル 6a 溝付き開繊・含浸用ローラ 6b 開繊・含浸用ローラ 7 ガイドローラ 8 収束用ローラ Reference Signs List 1 impregnation head (synthetic resin bath container) 2 molten synthetic resin pressure inlet 3a roving 3b resin impregnated roving 4 inlet nozzle 5 outlet nozzle 6a grooved opening / impregnation roller 6b opening / impregnation roller 7 guide roller 8 converging roller

───────────────────────────────────────────────────── フロントページの続き (72)発明者 古賀 博樹 兵庫県神戸市西区高塚台1丁目5番5号 株式会社神戸製鋼所 神戸総合技術研 究所内 (56)参考文献 特開 平4−35910(JP,A) 特開 平1−263005(JP,A) (58)調査した分野(Int.Cl.7,DB名) B29B 11/16 B29B 15/08 - 15/14 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Hiroki Koga 1-5-5 Takatsukadai, Nishi-ku, Kobe-shi, Hyogo Kobe Steel, Ltd. Kobe Research Institute (56) References JP-A-4-35910 ( JP, A) JP-A-1-263005 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B29B 11/16 B29B 15/08-15/14

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 合成樹脂浴容器中に長繊維を引揃えて導
入し、該長繊維に該合成樹脂を含浸させつつ該合成樹脂
浴容器の出口ノズルから樹脂含浸長繊維を引取ることに
より、長繊維強化合成樹脂ストランドを製造する方法に
おいて、 前記合成樹脂浴容器を筒形で構成すると共に、前記出口
ノズルが下方となる様に該筒形容器を傾斜して配置し、
長繊維を斜め上方から斜め下方に向けて走行させる一
方、該出口ノズルの近傍から溶融合成樹脂を注入して該
筒形容器の上方端近傍から溶融合成樹脂をオーバーフロ
ーさせながら樹脂含浸を行わせることを特徴とする長繊
維強化合成樹脂ストランドの製造方法。
1. A method in which long fibers are uniformly introduced into a synthetic resin bath container, and while the long fibers are impregnated with the synthetic resin, the resin-impregnated long fibers are taken out from an outlet nozzle of the synthetic resin bath container. In the method for producing a long fiber reinforced synthetic resin strand, the synthetic resin bath container is formed in a cylindrical shape, and the cylindrical container is arranged so as to be inclined such that the outlet nozzle is downward,
While running the long fiber from obliquely upward to obliquely downward, injecting molten synthetic resin from near the outlet nozzle and performing resin impregnation while overflowing the molten synthetic resin from near the upper end of the cylindrical container. A method for producing a long fiber reinforced synthetic resin strand, characterized in that:
【請求項2】 合成樹脂浴容器から引出される長繊維
を、撚りを掛けた状態で引取っていく請求項1に記載の
長繊維強化合成樹脂ストランドの製造方法。
2. The method for producing a long fiber reinforced synthetic resin strand according to claim 1, wherein the long fiber drawn from the synthetic resin bath container is drawn in a twisted state.
JP04155493A 1993-03-02 1993-03-02 Method for producing long fiber reinforced synthetic resin strand Expired - Lifetime JP3306959B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP04155493A JP3306959B2 (en) 1993-03-02 1993-03-02 Method for producing long fiber reinforced synthetic resin strand

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP04155493A JP3306959B2 (en) 1993-03-02 1993-03-02 Method for producing long fiber reinforced synthetic resin strand

Publications (2)

Publication Number Publication Date
JPH06254851A JPH06254851A (en) 1994-09-13
JP3306959B2 true JP3306959B2 (en) 2002-07-24

Family

ID=12611651

Family Applications (1)

Application Number Title Priority Date Filing Date
JP04155493A Expired - Lifetime JP3306959B2 (en) 1993-03-02 1993-03-02 Method for producing long fiber reinforced synthetic resin strand

Country Status (1)

Country Link
JP (1) JP3306959B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3073988B1 (en) 1999-08-12 2000-08-07 株式会社神戸製鋼所 Manufacturing method of organic fiber reinforced resin pellets
JP6000110B2 (en) * 2012-12-20 2016-09-28 東洋ゴム工業株式会社 Insulation device
JP6946648B2 (en) * 2017-01-30 2021-10-06 東レ株式会社 How to make prepreg

Also Published As

Publication number Publication date
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