JPH06254855A - Manufacture of filament reinforced synthetic resin strand - Google Patents
Manufacture of filament reinforced synthetic resin strandInfo
- Publication number
- JPH06254855A JPH06254855A JP5041558A JP4155893A JPH06254855A JP H06254855 A JPH06254855 A JP H06254855A JP 5041558 A JP5041558 A JP 5041558A JP 4155893 A JP4155893 A JP 4155893A JP H06254855 A JPH06254855 A JP H06254855A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- impregnation
- roving
- resin
- rollers
- 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.)
- Withdrawn
Links
- 229920003002 synthetic resin Polymers 0.000 title claims description 30
- 239000000057 synthetic resin Substances 0.000 title claims description 30
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 229920005989 resin Polymers 0.000 claims abstract description 38
- 239000011347 resin Substances 0.000 claims abstract description 38
- 239000000835 fiber Substances 0.000 claims description 55
- 238000005470 impregnation Methods 0.000 abstract description 49
- 238000000034 method Methods 0.000 abstract description 16
- 239000000463 material Substances 0.000 description 8
- 230000001965 increasing effect Effects 0.000 description 7
- 239000008188 pellet Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000012783 reinforcing fiber Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000000748 compression moulding Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000006187 pill Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Reinforced Plastic Materials (AREA)
- Moulding By Coating Moulds (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Abstract
Description
【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-shaped synthetic resin material reinforced with long fibers. The above strand-shaped material can be used as it is, but can also be used after being cut to an arbitrary length according to the purpose of use. An example of the latter is a pellet material used as a raw material for injection molding, injection compression molding, compression molding, etc. In this case, cutting into a length of several mm to a dozen mm is used. It is common. 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 product having a desired shape by injection molding a fiber-reinforced resin material, for example, a pellet-shaped raw material containing a reinforcing fiber in a synthetic resin is used.
Reinforcing fibers contained in such pelletized raw material are generally short fibers, but in recent years, long fibers are impregnated with a synthetic resin in one direction, that is, the long fiber pellets have been developed to have 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。As a method for producing these, a resin of a screw type or a plunger type extruder is provided on the side surface of an impregnation head in which reinforcing fibers (hereinafter sometimes referred to as rovings) are introduced in a bundle and run in an opened state. Impregnation is performed by providing a liquid discharge port and passing the roving through a molten synthetic resin bath formed by being press-fitted into the impregnation head. Then, the resin impregnated roving is taken out from the outlet nozzle of the impregnation head, and while curing the resin material, it is wound into the long fiber strands, which are cut into arbitrary lengths as described above, and the long fiber pellets are obtained. You can also do it.
【0004】上記方法の実施において最も基本的な要請
は、長繊維と溶融合成樹脂の含浸を十二分に行わせるこ
とであり、従来の技術では含浸ヘッド中に自由回転型の
開繊・含浸用ローラを複数列設け、走行ロービングの束
を該ローラに押しつける様に接触させることによって開
繊し含浸性を高めることが行われていた。しかしながら
溶融樹脂は熱分解を避けてほどほどの温度に調整されて
いる為、その粘度は比較的高い。その為、該ローラとの
接触部であっても期待される程の含浸性は得られず、ま
して前記ローラとローラの間では、ロービングが溶融樹
脂浴中を実質上素通りしているに等しく、その区間は含
浸の進行が殆ど期待されない部分となる。その為従来の
含浸ヘッドでは開繊・含浸用ローラをロービング走行軌
跡に沿って非常に数多く配設するか、ローラを蛇行配置
させると共にロービングに掛かる張力を大きくしてロー
ラへの接圧力を高める様な工夫が払われていた。しかし
前者の方法では含浸ヘッドを大きくしたり、ローラの保
守管理が煩わしくなるといった問題があるにもかかわら
ずそれに見合う十分な含浸効果が得られず、後者は摩擦
抵抗の増大やロービングの切断、或はロービングの一部
が切断することによるケバ立ちの発生という問題を生じ
ていた。このケバ立ちについては追って詳述するが、上
記の様な諸事情のため、含浸性を十分に高め得る様な技
術は未開拓の状況にあった。The most basic requirement in carrying out the above method is to sufficiently impregnate the long fibers and the molten synthetic resin. In the conventional technique, a freely rotating type opening / impregnation is performed in the impregnation head. It has been practiced to provide a plurality of rows of application rollers, and to open the fibers to enhance impregnation by contacting the traveling roving bundle so as to press the rollers. However, since the molten resin is adjusted to a moderate temperature to avoid thermal decomposition, its viscosity is relatively high. Therefore, the impregnability as expected is not obtained even at the contact portion with the roller, much less between the roller and the roller as if the roving passes through the molten resin bath substantially. The section is a part where the progress of impregnation is hardly expected. Therefore, in the conventional impregnation head, either a large number of opening and impregnating rollers should be arranged along the loving traveling path, or the rollers should be arranged in a meandering manner and the tension applied to the roving should be increased to increase the contact pressure to the roller. Was devised. However, the former method does not provide a sufficient impregnation effect commensurate with the size of the impregnation head and the maintenance of the roller becomes troublesome, but the latter method increases the frictional resistance and cuts the roving. Had a problem that a part of the roving was cut off to cause fluffing. Although this fluffing will be described in detail later, due to the various circumstances as described above, a technique capable of sufficiently enhancing the impregnation property has not yet been developed.
【0005】尚上記強化用繊維は、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。The reinforcing fiber is not particularly limited in material, diameter, number of bundles, etc., and for example, glass fiber, carbon fiber, organic fiber, metal fiber, etc. can be freely selected. Also, the synthetic resin material is not limited, and it is said that either a thermoplastic resin or a thermosetting resin can be used.
【0006】[0006]
【発明が解決しようとする課題】含浸が不十分である
と、製造された長繊維ストランドや長繊維ペレットにお
ける両者の接合が不十分となり、長繊維のバラケや脱落
を生じ、取扱性が悪くなって成形作業性を低下させる。
また長繊維が導電性のものである場合には電源ボックス
で短絡事故を起こすという危険もある。更にこの材料を
用いて例えば射出成形法により最終製品を製造すると、
合成樹脂との接合が不十分な長繊維が単独の挙動を示し
て絡み合い、毛玉となって成形性を害したり、成形品の
外観不良を招くという問題に発展する。従って本発明の
最重要課題は、長繊維と溶融合成樹脂との含浸を、可及
的完全に行わせることができる様な製造技術を確立する
点にある。If the impregnation is insufficient, the long fiber strands and long fiber pellets produced will not be sufficiently joined to each other, causing the long fibers to come apart and fall off, resulting in poor handleability. To lower the molding workability.
In addition, when the long fibers are conductive, there is a risk of causing a short circuit accident in the power supply box. Furthermore, when a final product is manufactured using this material by, for example, an injection molding method,
The long fibers insufficiently bonded to the synthetic resin behave in a singular manner and become entangled to form pills, which impairs the moldability and causes a poor appearance of the molded product. Therefore, the most important object of the present invention is to establish a manufacturing technique that allows impregnation of long fibers and molten synthetic resin as completely as possible.
【0007】上記課題とは別に、長繊維を引取走行させ
つつ連続的に含浸を行なわせる方法においては、連続生
産性を確保することも大切な要請である。即ちトラブル
の発生による生産中断は、生産性を低下させるものとし
て嫌われる。ところが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・含浸用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。In addition to the above problems, it is also important to ensure continuous productivity in the method of continuously impregnating long fibers while running them. That is, production interruption due to occurrence of trouble is disliked as a reduction in productivity. However, in the actual production process, after the start of production,
Soon after, the take-up resistance of the long fibers increased, and sometimes the take-up became impossible in a few hours, leading to production interruption. In such a case, when the impregnation head is disassembled and inspected, in the impregnation head, the exit nozzle and the upstream side of the impregnation head are filled with a nodule of fibers (for example, a black nodule with a carbon fiber). The nodule is formed by winding an opening / impregnation roller arranged in the impregnation head. Therefore, in order to reuse the impregnating head, it is necessary to completely disassemble and clean it, and even if two or more sets of impregnating heads are prepared and used alternately, the productivity is extremely reduced. It had to be something.
【0008】そこで本発明はこの様な不都合を解消する
ことも2次的な課題と定め、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うことができる方法を検討
した。Therefore, the present invention has decided to eliminate such inconvenience as a secondary problem, and studied a method capable of continuously taking up long fibers for a long time without any inconvenience.
【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、合成樹脂浴容器中に、長繊維
の走行軌跡と交差して該長繊維と接触するローラを任意
数配置すると共に、前記容器と前記ローラのいずれか一
方若しくは両方に振動を与えつつ、または前記合成樹脂
浴自体を直接振動させつつ前記長繊維への樹脂含浸を行
うことを要旨とするものである。According to the method of the present invention which has been able to achieve the above object, an arbitrary number of rollers which intersect the running locus of long fibers and come into contact with the long fibers are arranged in a synthetic resin bath container. In addition, it is a gist to impregnate the long fibers with resin while vibrating either or both of the container and the roller or directly vibrating the synthetic resin bath itself.
【0010】また上記した2次的な課題を達成する技術
としては、前記合成樹脂浴容器から引取られていく樹脂
含浸ロービングを、撚りを掛けた状態で引取る方法を提
案することができる。またこの様な撚りを付与すること
により、繊維間隙の気泡を追い出し、且つ繊維間の溶融
樹脂に対してこれ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発揮され
る。As a technique for achieving the above-mentioned secondary problem, it is possible to propose a method in which the resin-impregnated roving which is taken from the synthetic resin bath container is taken in a twisted state. Also, by imparting such a twist, the force that drives out the air bubbles in the fiber gap and forcibly moves it against the molten resin between the fibers works, so that the effect of enhancing the impregnation property of the resin is also demonstrated. To be done.
【0011】[0011]
【作用】本発明では、溶融樹脂が収容される含浸ヘッ
ド、及びロービングが押付けられる開繊・含浸用ローラ
のいずれか一方または両方を、従来の様な静置型とする
のではなく振動型とするか、或は含浸ヘッド中に振動板
等を配置するか、超音波を作用させる等して溶融樹脂自
体を直接振動させる様にしたので、溶融樹脂及び/又は
ローラが振動し、樹脂の含浸性が向上する。即ちローラ
の振動はロービングの開繊を促進し、また溶融樹脂の振
動はそれ自身の流動によってロービングとの衝突回数の
増加、更にはロービング間隙への加圧的浸入の促進とい
った効果をもたらす。従って溶融樹脂とローラの両方を
振動させるような構成を採用すると、ロービングが開繊
されると同時にその開繊間隙へ溶融樹脂が持込まれる様
な状態となり、相乗的効果が発揮される。しかもこの持
込みは溶融樹脂が高粘性であることにより、ロービング
に対して大きな樹脂圧を及ぼす様に作用する。従って溶
融樹脂は開繊間隙内へ積極的に押込まれることとなっ
て、含浸性が一気に改善される。開繊・含浸用ローラは
ロービングの走行軌跡が略直線となるのを防げない様な
一列配設でも良いが、積極的に蛇行させる様なジグザグ
配列でよい。In the present invention, one or both of the impregnation head containing the molten resin and the opening / impregnation roller against which the roving is pressed are vibration type instead of the static type as in the conventional case. Alternatively, a vibrating plate or the like is placed in the impregnation head, or ultrasonic waves are applied to directly vibrate the molten resin itself, so that the molten resin and / or the roller vibrates and the resin impregnability is increased. Is improved. That is, the vibration of the roller promotes the opening of the roving, and the vibration of the molten resin has the effect of increasing the number of collisions with the roving due to its own flow and further promoting the pressure penetration into the roving gap. Therefore, if a configuration is adopted in which both the molten resin and the roller are vibrated, the molten resin is brought into the opening gap at the same time when the roving is opened, and a synergistic effect is exhibited. Moreover, this carry-in acts so as to exert a large resin pressure on the roving because the molten resin has a high viscosity. Therefore, the molten resin is positively pushed into the opening gap, and the impregnation property is improved at once. The opening and impregnating rollers may be arranged in a single row so as to prevent the running locus of the roving from becoming substantially straight, but may be arranged in a zigzag pattern so as to positively meander.
【0012】また上記ローラは走行ロービングの一方向
のみから当接するものであったり、両方向から互い違い
に当接するものであっても良いが、もっとも好ましいの
は走行ロービングを挟みつける様に両側から軽く圧接す
る様な配列である。そして開繊・含浸用ローラの振動方
向は、該ローラの軸心方向、直交方向(上下方向および
左右方向も含む)、或は円周方向のいずれか一つまたは
その組み合わせとするが、前記した両側から圧接する様
なローラ配置とする場合は、例えば軸心方向振動のとき
は互い違い方向に振動させ、また直交方向振動のときは
相互に近接・離反を繰返す様な振動とすることが推奨さ
れる。このような方向制御が行えるのは機械的手段によ
って振動を付与する場合であり、この他超音波利用によ
る振動付与であると、溶融樹脂がチキソトロピー性を有
する場合は樹脂粘性の低下に寄与して含浸性を一層高い
ものとすることができる。Further, the rollers may be in contact with the traveling roving from only one direction, or may be in contact with each other alternately from both directions. Most preferably, the rollers are lightly pressed from both sides so as to sandwich the traveling roving. It is an array that does. The vibration direction of the opening and impregnating roller is one of the axial direction of the roller, the orthogonal direction (including the vertical direction and the horizontal direction), or the circumferential direction, or a combination thereof. When arranging the rollers so that they come into pressure contact with each other, it is recommended to vibrate in alternating directions in the case of axial vibration, and to vibrate in the directions of orthogonal vibration. It Such direction control can be performed when vibration is applied by mechanical means, and in addition, when vibration is applied by using ultrasonic waves, when the molten resin has thixotropic properties, it contributes to a decrease in resin viscosity. The impregnating property can be further enhanced.
【0013】次に上記した2次的な課題の解決手段につ
いて述べる。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、開繊・含浸ローラを通過す
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
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。Next, means for solving the above-mentioned secondary problem will be described. The present inventors used an impregnation head made of a transparent material and investigated from various angles in order to investigate the cause of the fact that the take-up resistance of long fibers increased during continuous production and finally the take-up became impossible. As a result, fluffing occurs from the long fiber bundle due to friction or ironing during the process of passing through the fiber opening / impregnation roller or when being drawn from the exit nozzle of the impregnation head, and this fluff is attracted immediately before the exit nozzle. It was found that the nodules were entangled with each other, and these grew one after another in a short time to form the nodule.
【0014】そこでこれの解決手段としては、ケバ立ち
の発生を防止する方向と、発生したケバを引取長繊維と
一緒に不都合なく含浸ヘッド外へ引取る様に工夫する方
向の2通りが考えられたが、ここでは後者の方向で解決
手段を講じることとした。即ち本発明では含浸ヘッドの
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ととした。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。Therefore, as a means for solving this, there are two possible ways of preventing fluffing from occurring and devising the fluff to be taken out of the impregnation head together with the take-up filament without any inconvenience. However, here we decided to take a solution in the latter direction. That is, in the present invention, the roving take-up member provided on the downstream side of the impregnating head is provided with a twist imparting mechanism (for example, a rotating mechanism), and the resin impregnated long fibers are twisted and taken up. When such a twist is applied, the twist is transmitted to the inside of the impregnation head through the outlet nozzle hole, and the fluff that starts to be entangled immediately before the outlet nozzle is taken into the twist and pulled out from the outlet nozzle. Is demonstrated. As a result, the formation of the nodule immediately before the outlet nozzle is prevented, and even if continuous operation is performed for a long time, the trouble of taking out the resin-impregnated long fibers does not occur and excellent productivity can be exhibited.
【0015】[0015]
【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、ロービング3aの走行軌跡を挟んで交互に片側配列
とした溝付き開繊・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(但しこれらはい
ずれも積極回転型とする)を順次通過した後、ガイドロ
ーラ7及び、これらのローラを直交配置される収束用ロ
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。そして含浸ヘ
ッド1及び/又はローラ6a,6bが図示しない振動機
構によって振動し、或は図示しない振動板等によって樹
脂自体が振動しているので、ロービング3aは前記諸ロ
ーラを通過していく過程で確実な開繊を受けて樹脂含浸
され、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、後者
の方が過剰になったときは図1の矢印N方向へ隘れ出さ
せる。溝付き開繊・含浸用ローラ6aとしては、図示し
た様なフラットローラタイプのものの他、軸方向中央部
が大径の太鼓型ローラタイプのものも用い得る。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a side view explanatory diagram conceptually showing an apparatus for carrying out the present invention, and FIG. 2 is a plan view explanatory diagram. In these figures, 1 is an impregnation head (synthetic resin bath container), 2
Indicates a molten synthetic resin pressure inlet, and the roving 3a sent from the arrow A enters the impregnation head 1 from the inlet nozzle 4 and has a grooved opening / impregnation alternately arranged on one side across the traveling locus of the roving 3a. After passing sequentially through the application roller 6a and a normal fiber-opening / impregnation roller 6b having no groove (both of which are positive rotation type), the guide roller 7 and the convergence of these rollers arranged orthogonally to each other. It is taken out toward the outlet nozzle 5 through the roller 8 for use. On the other hand, the impregnation head 1 is filled with the molten synthetic resin that is pressed in from the molten synthetic resin pressure inlet 2 in the direction of the arrow M. The impregnating head 1 and / or the rollers 6a and 6b are vibrated by a vibrating mechanism (not shown), or the resin itself is vibrating by a vibrating plate (not shown), so that the roving 3a passes through the rollers. The resin is impregnated upon receiving the reliable fiber opening, and is taken out from the outlet nozzle 5 in the direction of arrow B as the resin impregnated roving 3b. The supply amount of the roving 3a and the press-fitting amount of the molten synthetic resin are controlled so as to keep a balance, but when the latter becomes excessive, it is pushed out in the direction of arrow N in FIG. As the grooved opening / impregnation roller 6a, other than the flat roller type shown in the figure, a drum type roller type having a large diameter in the central portion in the axial direction may be used.
【0016】尚図3は既述した対向配置型であり、ここ
で使われるのはフラットローラタイプのものが好まし
く、溝の有無は自由に選択できる。いずれにせよ前記の
様な振動の付与によって、十分に満足し得る含浸度が達
成されることとなった。この様に良好な含浸性が得られ
る結果、繊維のケバも少なくなり、これを用いて射出成
形品を製造する工程における供給性が向上し、射出成形
機における計量時間が短く、且つ安定化したので、滞留
時間の減少、物性や製品寸法の安定といった効果が得ら
れた。FIG. 3 shows the facing arrangement type described above. The type used here is preferably the flat roller type, and the presence or absence of the groove can be freely selected. In any case, by applying the vibration as described above, a sufficiently satisfactory degree of impregnation can be achieved. As a result of obtaining such good impregnability, fluffing of the fiber is reduced, the supplyability in the process of manufacturing an injection molded product using the fiber is improved, and the measuring time in the injection molding machine is shortened and stabilized. Therefore, effects such as reduction of residence time and stability of physical properties and product dimensions were obtained.
【0017】また本発明ではケバによるトラブルの発生
を一層少ないものとする為に、次の様な構成が付加され
る。即ち、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。Further, in the present invention, in order to further reduce the occurrence of troubles due to fluff, the following structure is added. That is, the resin-impregnated roving 3b which is taken out in the direction of the arrow B as described above is moved by the twist generator (not shown) to the arrow C.
The twist formed by the rotation is indicated by the arrow B.
And proceeds in the opposite direction to reach the converging roller 8. Therefore, in the resin-impregnated roving 3b, the twist is generated and grows from the downstream side of the converging roller 8 as a starting point. Therefore, the fluff that is generated in the impregnation head 1 and is attracted toward the outlet nozzle 5 as the roving 3a travels, or the fluff that is generated by the sliding friction with the outlet nozzle 5 is caught in the twist in the generation / growth process. The resin-impregnated roving 3b is drawn from the outlet nozzle 5 and 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 fiber agglomeration occurs.
【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、ロービングの開繊が促進され、或は樹脂とロービン
グの衝突回数が増加し、樹脂含浸性が非常に良好なもの
となった。その為繊維の脱落やそれに伴う成形工程上の
トラブルがなくなり、生産性が改善された。更にケバ立
ち等の外観不良の無い良好な物性の成形品を安定して製
造できる様になった。また樹脂含浸長繊維を更に高速で
引取ってケバ立ちを生じる様なことになっても、長繊維
のケバは、撚りの中に取込まれて含浸ヘッド外へ引取ら
れていくので、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。EFFECTS OF THE INVENTION Since the present invention is constructed as described above, the opening of rovings is promoted, or the number of collisions of resin and roving is increased, and the resin impregnation property becomes very good. . As a result, there was no loss of fibers and the resulting troubles in the molding process, and productivity was improved. Furthermore, it has become possible to stably manufacture a molded product having good physical properties without appearance defects such as fluffing. Even if the resin-impregnated long fibers are taken at a higher speed to cause fluffing, the long-fiber fluff is taken into the twist and taken out of the impregnation head. The entanglement of fibers does not grow inside. Therefore, it is possible to maintain excellent productivity for a long period of time without increasing the take-up resistance due to the agglomeration of the fibers or causing the take-off failure.
【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 diagram 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.
【図3】本発明を実施するための他の実施例を示す側面
視説明図。FIG. 3 is a side view explanatory view showing another embodiment for carrying out the present invention.
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 6 開繊・含浸用ローラ 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 1 Impregnation Head (Synthetic Resin Bath Container) 2 Molten Synthetic Resin Pressure Inlet 3a Roving 3b Resin Impregnation Roving 4 Inlet Nozzle 5 Outlet Nozzle 6 Fiber Opening / Impregnation Roller 6a Grooved Fiber Opening / Impregnation Roller 6b Fiber Opening / Impregnation Roller 7 Guide roller 8 Converging roller
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 FI 技術表示箇所 // B29K 105:08 (72)発明者 橋本 孝一 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 (72)発明者 足永 武彦 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─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Reference number within the agency FI technical display location // B29K 105: 08 (72) Inventor Koichi Hashimoto 1-5-5 Takatsukadai, Nishi-ku, Kobe-shi, Hyogo Issue Kobe Steel Works, Ltd. Kobe Research Institute (72) Inventor Takehiko Ashinaga 1-5-5 Takatsukadai, Nishi-ku, Kobe-shi, Hyogo Kobe Steel Works Kobe Research Institute
Claims (2)
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内に、長繊維の走行軌跡と交差して
該長繊維と接触するローラを任意数配置すると共に、前
記容器と前記ローラのいずれか一方若しくは両方に振動
を与えつつ、または前記合成樹脂浴自体を直接振動させ
つつ前記長繊維への樹脂含浸を行う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 long fiber is aligned and introduced into a synthetic resin bath container, and the resin-impregnated long fiber is taken out from an outlet nozzle of the synthetic resin bath container while impregnating the long fiber with the synthetic resin. In the method for producing a long fiber-reinforced synthetic resin strand, in the synthetic resin bath container, an arbitrary number of rollers that intersect the running locus of the long fibers and come into contact with the long fibers are arranged, and any one of the container and the rollers. A method for producing a long fiber-reinforced synthetic resin strand, which comprises impregnating the long fibers with a resin while vibrating one or both of them or directly vibrating the synthetic resin bath itself.
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 fibers drawn out from the synthetic resin bath container are taken in a twisted state.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5041558A JPH06254855A (en) | 1993-03-02 | 1993-03-02 | Manufacture of filament reinforced synthetic resin strand |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5041558A JPH06254855A (en) | 1993-03-02 | 1993-03-02 | Manufacture of filament reinforced synthetic resin strand |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH06254855A true JPH06254855A (en) | 1994-09-13 |
Family
ID=12611765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5041558A Withdrawn JPH06254855A (en) | 1993-03-02 | 1993-03-02 | Manufacture of filament reinforced synthetic resin strand |
Country Status (1)
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JP (1) | JPH06254855A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006289714A (en) * | 2005-04-08 | 2006-10-26 | Prime Polymer:Kk | Method and apparatus for producing fiber-reinforced resin molding material |
JP2011240666A (en) * | 2010-05-20 | 2011-12-01 | Toyota Motor Corp | Device and method for manufacturing prepreg |
JP5870392B1 (en) * | 2015-01-13 | 2016-03-01 | 株式会社アドウェルズ | Processing method and processing apparatus |
JP2017125288A (en) * | 2016-01-08 | 2017-07-20 | 株式会社アドウェルズ | Processing device |
WO2019176823A1 (en) * | 2018-03-12 | 2019-09-19 | 株式会社アドウェルズ | Impregnation device, impregnation method, and processing apparatus |
JP2022117652A (en) * | 2021-02-01 | 2022-08-12 | 内浜化成株式会社 | Dividing device of reinforced fiber bundles and dividing method of reinforced fiber bundles |
-
1993
- 1993-03-02 JP JP5041558A patent/JPH06254855A/en not_active Withdrawn
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006289714A (en) * | 2005-04-08 | 2006-10-26 | Prime Polymer:Kk | Method and apparatus for producing fiber-reinforced resin molding material |
JP2011240666A (en) * | 2010-05-20 | 2011-12-01 | Toyota Motor Corp | Device and method for manufacturing prepreg |
JP5870392B1 (en) * | 2015-01-13 | 2016-03-01 | 株式会社アドウェルズ | Processing method and processing apparatus |
US10434730B2 (en) | 2015-01-13 | 2019-10-08 | Adwelds Corporation | Treatment device and treatment method |
JP2017125288A (en) * | 2016-01-08 | 2017-07-20 | 株式会社アドウェルズ | Processing device |
WO2019176823A1 (en) * | 2018-03-12 | 2019-09-19 | 株式会社アドウェルズ | Impregnation device, impregnation method, and processing apparatus |
JP2019155901A (en) * | 2018-03-12 | 2019-09-19 | 株式会社アドウェルズ | Impregnation apparatus, impregnation method and processing device |
JP2022117652A (en) * | 2021-02-01 | 2022-08-12 | 内浜化成株式会社 | Dividing device of reinforced fiber bundles and dividing method of reinforced fiber bundles |
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