JP3437651B2 - Method for producing pellet-shaped long fiber reinforced resin structure - Google Patents
Method for producing pellet-shaped long fiber reinforced resin structureInfo
- Publication number
- JP3437651B2 JP3437651B2 JP20271494A JP20271494A JP3437651B2 JP 3437651 B2 JP3437651 B2 JP 3437651B2 JP 20271494 A JP20271494 A JP 20271494A JP 20271494 A JP20271494 A JP 20271494A JP 3437651 B2 JP3437651 B2 JP 3437651B2
- Authority
- JP
- Japan
- Prior art keywords
- fiber bundle
- continuous fiber
- molten resin
- impregnated
- pellet
- 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 - Fee Related
Links
Landscapes
- Reinforced Plastic Materials (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、長繊維で強化されたペ
レット状長繊維強化樹脂構造物を製造する方法に関す
る。さらに詳しくは、ペレット状長繊維強化樹脂構造物
の製造工程において、溶融樹脂含浸連続繊維束を引き取
る工程の入口、及びカッティング工程の入口における溶
融樹脂含浸連続繊維束の温度を調節してそのショア硬度
を特定の範囲とすることを特徴とするものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a long-fiber-reinforced pellet-shaped long-fiber-reinforced resin structure. More specifically, in the manufacturing process of the pelletized long fiber reinforced resin structure, the Shore hardness of the molten resin-impregnated continuous fiber bundle is adjusted by adjusting the temperature of the molten resin-impregnated continuous fiber bundle at the entrance of the step of drawing the molten resin-impregnated continuous fiber bundle and the entrance of the cutting step. Is a specific range.
【０００２】[0002]
【従来の技術】熱可塑性樹脂を連続繊維で補強し、これ
を切断して得たペレット状繊維強化樹脂構造物は、短繊
維で補強されたものに比べてはるかに優れた力学的物性
を有するため、近年特に期待されている。かかるペレッ
ト状長繊維強化熱可塑性樹脂構造物は一般に連続した強
化用繊維束をクロスヘッド押出機に通して引きながら熱
可塑性樹脂を含浸した後、ダイを通して引き抜いたり
（ＵＳＰ３，９９３，７２６号明細書）、連続した強化
用繊維束を引きながら溶融熱可塑性樹脂に浸漬して濡ら
した後、ダイを通して引き抜いたり（特開昭５７−１８
１８５２号公報）する、いわゆるプルトルージョン法に
よって製造されており、任意のペレット長さに切断され
る。2. Description of the Related Art A pellet-shaped fiber reinforced resin structure obtained by reinforcing a thermoplastic resin with continuous fibers and cutting the same has much better mechanical properties than those reinforced with short fibers. Therefore, it is particularly expected in recent years. Such a pellet-shaped long-fiber-reinforced thermoplastic resin structure is generally impregnated with a thermoplastic resin while drawing a continuous reinforcing fiber bundle through a crosshead extruder and then withdrawn through a die (USP 3,993,726). ), While pulling a continuous reinforcing fiber bundle, soaking it in a molten thermoplastic resin to wet it, and then pulling it out through a die (JP-A-57-18).
No. 1852), which is a so-called pultrusion method, and is cut into an arbitrary pellet length.
【０００３】[0003]
【本発明が解決しようとする課題】前記ペレット状長繊
維強化樹脂構造物の製造において、連続補強繊維束を引
きながらマトリックス樹脂を均一に含浸させるには、後
段に溶融樹脂含浸連続繊維束を引き取る工程が必要とな
る。また得られる製品の品質の安定、含浸工程の安定運
転のためには、引取工程は一定スピードでムラ無く安定
していることが求められる。前記引取工程としては、通
常ロールで駆動する上下のエンドレスベルトに溶融樹脂
含浸連続繊維束を挟んで行われるので、安定した引取に
は溶融樹脂含浸連続繊維束は柔らかい状態であるよりも
ある程度冷却されて固化している方が望ましい。更に含
浸工程の直後には通常賦形ダイを設け、含浸をより均一
にすると共に繊維束の断面形状を目的製品形状にしてい
る。従って引取工程では、その入口において賦形された
形状が変化しないためにもある程度の硬さが要求され
る。In order to uniformly impregnate the matrix resin while drawing the continuous reinforcing fiber bundle in the production of the pellet-shaped long fiber reinforced resin structure, the molten resin-impregnated continuous fiber bundle is taken in the subsequent stage. A process is required. Further, in order to stabilize the quality of the obtained product and the stable operation of the impregnation process, the take-up process is required to be stable at a constant speed and even. As the take-up step, since the molten resin-impregnated continuous fiber bundle is sandwiched between the upper and lower endless belts that are usually driven by rolls, the molten resin-impregnated continuous fiber bundle is cooled to a certain degree for stable take-up than in a soft state. It is better to be solidified. Immediately after the impregnation step, a shaping die is usually provided to make the impregnation more uniform and to make the cross-sectional shape of the fiber bundle the target product shape. Therefore, in the take-up step, a certain degree of hardness is required so that the shape formed at the entrance does not change.
【０００４】上記のように溶融樹脂含浸連続繊維束を冷
却して引き取るには、賦形ダイと引取装置の間に冷却装
置を設ければよいが、次のカッティング工程との関係で
冷却の程度の設定が困難であった。すなわち、製品をペ
レット状で得るために、引取工程の後にカッティング工
程が設けられる。カッティング工程に於いては溶融樹脂
含浸連続繊維束がカッターにに付着しない程度にその温
度が高く、柔らかい方がカッティングに要するエネルギ
ーが少なく、カッターのブレードの摩耗が少なく、ペレ
ットの割れや切断面の形状も乱れが少なく、微粉の発生
も少なくなる。従って、カッティング工程の前にある引
取工程では、溶融樹脂含浸連続繊維束を余り冷却しない
方が、引取工程とカッティング工程との間で再加熱に要
する熱エネルギーも少なくなり望ましい。In order to cool and draw the molten resin-impregnated continuous fiber bundle as described above, a cooling device may be provided between the shaping die and the take-up device, but the degree of cooling is related to the next cutting step. Was difficult to set. That is, a cutting process is provided after the take-up process in order to obtain the product in pellet form. In the cutting process, the temperature is so high that the molten resin-impregnated continuous fiber bundles do not adhere to the cutter, the softer the energy required for cutting, the less the blade of the cutter wears, the less cracked the pellet or the cut surface. The shape is less disturbed and the generation of fine powder is less. Therefore, it is desirable that the molten resin-impregnated continuous fiber bundle is not cooled so much in the take-up step before the cutting step because the heat energy required for reheating between the take-up step and the cutting step is reduced.
【０００５】このように、溶融樹脂含浸連続繊維束を安
定して引き取り、またその際の断面形状を変化させない
為の冷却とそれにかかるコスト、更にはカッティングに
伴う再加熱に要するエネルギー等を考慮して、引き取り
時の溶融樹脂含浸連続繊維束の温度およびカッティング
工程入口における溶融樹脂含浸連続繊維束の温度をバラ
ンス良く設定することは非常に困難であった。In this way, the molten resin-impregnated continuous fiber bundle is stably drawn, and the cooling for keeping the cross-sectional shape at that time and the cost required therefor, as well as the energy required for reheating accompanying cutting, etc. are taken into consideration. Therefore, it is very difficult to set the temperature of the molten resin-impregnated continuous fiber bundle at the time of take-up and the temperature of the molten resin-impregnated continuous fiber bundle at the entrance of the cutting process in a well-balanced manner.
【０００６】本発明者らは、このような事情に鑑みて、
溶融樹脂含浸連続繊維束を引き取る際の温度、及びカッ
ティング時の最適温度について鋭意したところ、前記両
工程の入口における溶融樹脂含浸連続繊維束の硬度を各
々所定の範囲とする温度であることが非常に有利である
ことを見い出し、本発明を完成するに至った。In view of such circumstances, the present inventors have considered
When the temperature at the time of taking out the molten resin-impregnated continuous fiber bundle and the optimum temperature at the time of cutting were earnestly studied, it was extremely high that the hardness of the molten resin-impregnated continuous fiber bundle at the inlets of both the steps was within a predetermined range. Therefore, the present invention has been completed and the present invention has been completed.
【０００７】[0007]
【課題を解決するための手段】すなわち本発明は、開繊
工程で連続繊維束を開繊し、次いで含浸工程で前記開繊
連続繊維束へ溶融樹脂を含浸させ、次いで引取工程で溶
融樹脂含浸連続繊維束を引き取り、更にカッティング工
程で引き取られた溶融樹脂含浸連続繊維束をカッティン
グしてペレット状長繊維強化樹脂構造物を製造する方法
において、前記引取工程の入口における溶融樹脂含浸連
続繊維束の温度を調節してそのショア硬度（Ｄ1）を３
０以上とし、且つカッティング工程の入口における溶融
樹脂含浸連続繊維束の温度を調節してそのショア硬度
（Ｄ2）を２５〜８５の範囲とすることを特徴とするペ
レット状長繊維強化樹脂構造物の製造方法に関する。以
下、本発明について詳細に説明する。Means for Solving the Problems That is, the present invention is to open a continuous fiber bundle in an opening step, then impregnate the opened continuous fiber bundle with a molten resin in an impregnation step, and then impregnate the molten resin in a take-up step. In the method of producing a pelletized long fiber reinforced resin structure by cutting the continuous fiber bundle, further cutting the molten resin-impregnated continuous fiber bundle taken in the cutting step, of the molten resin-impregnated continuous fiber bundle at the inlet of the drawing step. Adjust the temperature to adjust its Shore hardness (D 1 ) to 3
A pellet-like long-fiber-reinforced resin structure, which has a Shore hardness (D 2 ) in the range of 25 to 85 by adjusting the temperature of the molten resin-impregnated continuous fiber bundle at the inlet of the cutting step to 0 or more. Manufacturing method. Hereinafter, the present invention will be described in detail.
【０００８】[0008]
【作用】本発明のペレット状長繊維強化樹脂構造物を製
造するために使用できる工程例の概略図を図１に示す。
図１において、１はロービングから取り出された繊維束
である。これは、特に撚りが無い繊維束であることが好
ましい。２はロールバー、３は溶融熱可塑性樹脂を供給
する押出機、４は繊維束１に溶融熱可塑性樹脂を含浸さ
せるクロスヘッドダイ、５は溶融熱可塑性樹脂が含浸さ
れた繊維束、６は賦形ダイ、７は引取ロール、８はペレ
タイザーである。1 is a schematic view of an example of a process that can be used for producing the pellet-shaped long fiber reinforced resin structure of the present invention.
In FIG. 1, 1 is a fiber bundle taken out from the roving. This is preferably a fiber bundle having no twist. 2 is a roll bar, 3 is an extruder for supplying a molten thermoplastic resin, 4 is a crosshead die for impregnating the fiber bundle 1 with the molten thermoplastic resin, 5 is a fiber bundle impregnated with the molten thermoplastic resin, and 6 is a filler. Forming die, 7 is a take-up roll, and 8 is a pelletizer.
【０００９】ここで用いられる繊維束の繊維の種類とし
ては、特に制約はなく、例えばガラス繊維、炭素繊維、
金属繊維、芳香族ポリアミド繊維等の高融点繊維等がい
ずれも使用できる。これらの繊維は、通常公知の表面処
理剤（集束剤）で処理したものが使用されるが、これに
限定されない。これらの繊維の中では、得られる長繊維
強化樹脂構造物の強度や価格などを考慮すると、ガラス
繊維であることが好ましい。また本発明で使用する連続
繊維束のテックス数としては通常４４００〜１２０、好
ましくは２２００〜７４０の範囲である。The kind of fiber of the fiber bundle used here is not particularly limited, and examples thereof include glass fiber, carbon fiber,
Any of high melting point fibers such as metal fibers and aromatic polyamide fibers can be used. For these fibers, those treated with a known surface treatment agent (sizing agent) are usually used, but the fibers are not limited thereto. Among these fibers, glass fibers are preferable in view of strength and price of the long fiber reinforced resin structure to be obtained. The tex number of the continuous fiber bundle used in the present invention is usually in the range of 4400 to 120, preferably 2200 to 740.
【００１０】繊維束１は、ロールバー２による開繊工程
により開繊される。図１ではロールバーを用いている
が、この他の開繊手段、例えば静電気、エアーブロー
（エアージェット）、ウオータージェット、テンション
バー、ニードルパンチなどを用いてもよい。The fiber bundle 1 is opened in the opening process using the roll bar 2. Although a roll bar is used in FIG. 1, other fiber opening means such as static electricity, air blow (air jet), water jet, tension bar, needle punch and the like may be used.
【００１１】本発明の含浸工程に採用される含浸法とし
てはとくに制限はなく、クロスヘッドダイ等の含浸ダイ
を用いる方法、含浸槽を用いる方法等公知の含浸方法が
いずれも採用可能である。中でもクロスヘッドダイ等の
含浸ダイを用いる方法が好ましい。The impregnation method used in the impregnation step of the present invention is not particularly limited, and any known impregnation method such as a method using an impregnation die such as a crosshead die or a method using an impregnation tank can be employed. Of these, a method using an impregnation die such as a crosshead die is preferable.
【００１２】本発明において、前記含浸に用いられる樹
脂としては、通常熱可塑性樹脂であり、結晶性および非
晶性の両者を含み、例えばポリエチレン、ポリプロピレ
ン等のポリオレフィン、ポリエチレンテレフタレートや
ポリブチレンテレフタレート等のポリエステル、ナイロ
ン６、ナイロン６６、ナイロン１１、ナイロン１２、ナ
イロン６１０、ナイロン６１２等のポリアミド、ポリア
セタール、ポリカーボネート、熱可塑性ポリウレタン、
ポリフェニレンサルファイド、ポリフェニレンオキサイ
ド、ポリスルホン、ポリエーテルケトン、ポリエーテル
アミド、ポリエーテルイミド、アクリロニトリル・スチ
レン樹脂等のその他の熱可塑性樹脂およびこれらの組み
合わせが使用できる。In the present invention, the resin used for the impregnation is usually a thermoplastic resin and includes both crystalline and amorphous, and examples thereof include polyolefins such as polyethylene and polypropylene, polyethylene terephthalate and polybutylene terephthalate. Polyamide, nylon 6, nylon 66, nylon 11, nylon 12, nylon 610, nylon 612 and other polyamides, polyacetal, polycarbonate, thermoplastic polyurethane,
Other thermoplastic resins such as polyphenylene sulfide, polyphenylene oxide, polysulfone, polyether ketone, polyether amide, polyether imide, acrylonitrile-styrene resin and combinations thereof can be used.
【００１３】クロスヘッドダイ４により溶融熱可塑性樹
脂が含浸された連続繊維束は、賦形ダイ６により所定の
断面形状、例えばストランド、棒状、リボン状、テープ
状、シート状、板状、あるいは特殊形状等に整えられる
と共に熱可塑性樹脂の含浸が促進ないし均一化される。
溶融樹脂含浸連続繊維束は賦形ダイ６を通過したあと、
引取ロール７を用いて引き取られる。図１の引取ロール
７では、上下のエンドレスベルトを用いている。引き取
られた長繊維強化樹脂構造物は、ペレタイザー８で任意
の長さに切断してペレットとされ、成形あるいは他の加
工に供される。このペレットには、ペレット長と実質的
に同じ長さを有し、ペレットの長手方向にほぼ平行に配
列した強化用の繊維が含まれることとなる。The continuous fiber bundle impregnated with the molten thermoplastic resin by the crosshead die 4 has a predetermined cross-sectional shape by the shaping die 6, for example, a strand, a rod, a ribbon, a tape, a sheet, a plate, or a special shape. The shape is adjusted and the impregnation of the thermoplastic resin is promoted or made uniform.
After the molten resin-impregnated continuous fiber bundle passes through the shaping die 6,
It is collected by using the collecting roll 7. The take-up roll 7 of FIG. 1 uses upper and lower endless belts. The long fiber reinforced resin structure thus taken is cut into pellets by the pelletizer 8 and is used for molding or other processing. This pellet contains reinforcing fibers having a length substantially the same as the pellet length and arranged substantially parallel to the longitudinal direction of the pellet.
【００１４】本発明の特徴の一つは、上記引取工程の入
口における溶融樹脂含浸連続繊維束のショア硬度
（Ｄ1）が３０以上、好ましくは５５〜９０の範囲にな
るように図示しない冷却手段によりその温度を調節する
ことにある。溶融樹脂含浸連続繊維束のショア硬度は含
浸樹脂の種類、強化用繊維束の種類、それらの組成が一
定であれば、その樹脂温度に依存するので、予め別の試
験で温度と硬度の関係を求めておき、工程上は引取工程
の入口における溶融樹脂含浸連続繊維束の温度を測定
し、前記ショア硬度の範囲になるように賦形ダイから引
取工程までの冷却条件を調整すればよい。ショア硬度が
前記範囲になるように溶融樹脂含浸連続繊維束の温度を
設定することにより、過度に冷却することなく、一方賦
形ダイで付与された繊維束の断面形状が変化することな
く、かつ安定した引取が可能となる。なお、本明細書で
ショア硬度とは、ショアＤ型硬度計（Ｄスケール）で測
定したものである。One of the features of the present invention is a cooling means (not shown) so that the Shore hardness (D 1 ) of the molten resin-impregnated continuous fiber bundle at the inlet of the above-mentioned drawing step is 30 or more, preferably 55 to 90. By adjusting the temperature. The Shore hardness of a molten resin-impregnated continuous fiber bundle depends on the resin temperature if the type of impregnated resin, the type of fiber bundle for reinforcement, and their composition are constant. In the process, the temperature of the molten resin-impregnated continuous fiber bundle at the inlet of the take-up process may be measured and the cooling conditions from the shaping die to the take-up process may be adjusted so as to be within the Shore hardness range. By setting the temperature of the molten resin-impregnated continuous fiber bundle so that the Shore hardness is within the above range, without excessive cooling, the cross-sectional shape of the fiber bundle provided by the shaping die does not change, and, Stable pickup is possible. The Shore hardness as used herein is measured by a Shore D type hardness meter (D scale).
【００１５】前記の冷却手段としては、自然冷却（空
冷）、風令、水冷、ミスト状の水の吹き付けによる冷却
などが例示でき、樹脂の種類や賦形ダイから引取工程ま
での距離の設定可能性などを考慮して選択すればよい。Examples of the cooling means include natural cooling (air cooling), wind age, water cooling, and cooling by spraying mist-like water. The type of resin and the distance from the shaping die to the take-up step can be set. It may be selected in consideration of sex and the like.
【００１６】本発明のもう一つの特徴は、ペレタイザー
８の入口における溶融樹脂含浸連続繊維束のショア硬度
（Ｄ2）が２５〜８５、好ましくは３０〜７０の範囲に
なるようにその温度を調節することにある。ショア硬度
が前記範囲になる温度は、引取工程入口におけるショア
硬度の設定と同様、別の試験で温度とショア硬度の関係
を求めておき、ペレタイザー８の入口の溶融樹脂含浸連
続繊維束の温度を調整することにより達成できる。前記
温度に調整する方法としては、図示しない通常公知の加
熱手段、例えば電熱ヒーター、温風ヒーター等が使用で
きる。ペレタイザー８の入口における溶融樹脂含浸連続
繊維束のショア硬度が前記範囲内に入るように調整する
ことにより、カッティングに要するエネルギーが少な
く、カッターのブレードの摩耗が少なく、ペレットの割
れや切断面の形状も乱れが少なく、微粉の発生も少ない
安定したカッティングができる。Another feature of the present invention is to adjust the temperature so that the Shore hardness (D 2 ) of the molten resin-impregnated continuous fiber bundle at the inlet of the pelletizer 8 is in the range of 25 to 85, preferably 30 to 70. To do. The temperature at which the shore hardness falls within the above range is similar to the setting of the shore hardness at the inlet of the take-up step, and the relationship between the temperature and the shore hardness is obtained in another test, and the temperature of the molten resin-impregnated continuous fiber bundle at the inlet of the pelletizer 8 is determined. It can be achieved by adjusting. As a method for adjusting the temperature, a generally known heating means (not shown) such as an electric heater or a warm air heater can be used. By adjusting the Shore hardness of the molten resin-impregnated continuous fiber bundle at the inlet of the pelletizer 8 to fall within the above range, less energy is required for cutting, less blade wear of the cutter, cracking of pellets and cut surface shape. Stable cutting is possible with less disorder and less generation of fine powder.
【００１７】上記のようにして得られるペレット状長繊
維強化樹脂構造物の組成、例えば繊維の含有量について
は特に制約はないが、得られる構造物の諸物性の面か
ら、２０〜８０重量％（構造物中）が好ましく、特に好
ましくは３０〜７０重量％である。There is no particular restriction on the composition of the pellet-shaped long fiber reinforced resin structure obtained as described above, for example, the fiber content, but from the viewpoint of various physical properties of the obtained structure, 20 to 80% by weight. (In the structure) is preferable, and particularly preferably 30 to 70% by weight.
【００１８】また、本発明によって得られるペレット状
長繊維強化樹脂構造物には目的に応じて、一般に樹脂に
添加される各種の添加物、例えば酸化防止剤、紫外線吸
収剤、帯電防止剤、浸滑剤、可塑剤、離型剤、難燃剤、
難燃焼助剤、結晶化促進剤、着色剤、無機充填材や有機
充填材等を配合することもできる。Further, the pellet-shaped long-fiber-reinforced resin structure obtained by the present invention has various additives generally added to the resin according to the purpose, such as an antioxidant, an ultraviolet absorber, an antistatic agent and a dipping agent. Lubricant, plasticizer, mold release agent, flame retardant,
A flame retardant aid, a crystallization accelerator, a coloring agent, an inorganic filler, an organic filler and the like may be added.
【００１９】[0019]
【実施例】以下実施例により本発明を更に具体的に説明
するが、本発明はこれに限定されるものではない。The present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto.
【００２０】（実施例１，比較例１〜２）図１に示す装
置を用いて、ポリプロピレン５０重量％およびガラス繊
維５０重量％からなるポリプロピレン含浸ガラス繊維束
を引取速度４ｍ／分で引き取り、これをカッティングし
て長さ１２ｍｍのペレット状長繊維強化樹脂構造物を製
造した。なお、引取ロールの直前にミスト方式のストラ
ンド冷却装置を、またペレタイザーの直前にはセラミッ
クヒーターを設置し、引取ロール入口およびペレタイザ
ー入口のストランド温度を表−１の通りに設定した他は
同様に行った。得られたペレット形状および製品中の微
粉量を表−１に示す。なお、表中のショア硬度は、ショ
アＤ型硬度計による硬さを示す。(Example 1, Comparative Examples 1 and 2) Using the apparatus shown in FIG. 1, a polypropylene-impregnated glass fiber bundle consisting of 50% by weight of polypropylene and 50% by weight of glass fiber was taken out at a take-up speed of 4 m / min. Was cut to produce a pellet-shaped long fiber reinforced resin structure having a length of 12 mm. A mist-type strand cooling device was installed immediately before the take-up roll, a ceramic heater was installed immediately before the pelletizer, and the strand temperature at the take-in roll inlet and the pelletizer inlet was set as shown in Table-1. It was Table 1 shows the obtained pellet shape and the amount of fine powder in the product. The Shore hardness in the table indicates the hardness measured by a Shore D type hardness meter.
【００２１】[0021]
【表１】 [Table 1]
【００２２】[0022]
【発明の効果】以上説明したように、本発明によれば、
溶融樹脂含浸連続繊維束の引取工程入口及びカッティン
グ工程入口における硬度を所定に範囲になるように温度
設定することにより、引取工程による溶融樹脂含浸連続
繊維束の形状が変化することなく、引取が安定する結
果、含浸工程での安定した操業が可能になり、更には均
一な含浸、正常な切断面を有し、微粉の発生が抑制され
たペレット製品が得られることとなる。As described above, according to the present invention,
By setting the temperature so that the hardness at the inlet of the molten resin-impregnated continuous fiber bundle and the inlet of the cutting process are within a predetermined range, the shape of the molten resin-impregnated continuous fiber bundle does not change during the winding process and the pulling is stable. As a result, stable operation in the impregnation step becomes possible, and further, a pellet product having uniform impregnation, a normal cutting surface, and suppressing generation of fine powder can be obtained.
【図１】本発明に用いられるペレット状長繊維強化樹脂
構造物の製造工程を示す一例である。FIG. 1 is an example showing a manufacturing process of a pellet-shaped long fiber reinforced resin structure used in the present invention.
１ 連続繊維束 ２ ロールバー ３ 押出機 ４ クロスヘッドダイ ５ 熱可塑性樹脂が含浸された繊維束 ６ 賦形ダイ ７ 引取ロール ８ ペレタイザー 1 continuous fiber bundle 2 roll bar 3 extruder 4 cross head die 5 Fiber bundles impregnated with thermoplastic resin 6 Shaped die 7 Collection roll 8 pelletizer
フロントページの続き (56)参考文献 特開 平７−216104（ＪＰ，Ａ) 特開 平７−68544（ＪＰ，Ａ) 特開 平６−143440（ＪＰ，Ａ) 特開 平６−116851（ＪＰ，Ａ) 特開 平３−230943（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B29B 9/06 B29B 9/14 Continuation of the front page (56) Reference JP-A-7-216104 (JP, A) JP-A-7-68544 (JP, A) JP-A-6-143440 (JP, A) JP-A-6-116851 (JP , A) JP-A-3-230943 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) B29B 9/06 B29B 9/14
Claims (2)
含浸工程で前記開繊連続繊維束へ溶融樹脂を含浸させ、
次いで引取工程で溶融樹脂含浸連続繊維束を引き取り、
更にカッティング工程で引き取られた溶融樹脂含浸連続
繊維束をカッティングしてペレット状長繊維強化樹脂構
造物を製造する方法において、前記引取工程の入口にお
ける溶融樹脂含浸連続繊維束の温度を調節してそのショ
ア硬度（Ｄ1）を３０以上とし、且つカッティング工程
の入口における溶融樹脂含浸連続繊維束の温度を調節し
てそのショア硬度（Ｄ2）を２５〜８５の範囲とするこ
とを特徴とするペレット状長繊維強化樹脂構造物の製造
方法。1. A continuous fiber bundle is opened in an opening step, and then a molten resin is impregnated into the opened continuous fiber bundle in an impregnation step,
Next, in the take-up step, the molten resin-impregnated continuous fiber bundle is taken up,
Furthermore, in the method for producing a pellet-shaped long fiber reinforced resin structure by cutting the molten resin-impregnated continuous fiber bundle taken in the cutting step, adjusting the temperature of the molten resin-impregnated continuous fiber bundle at the inlet of the drawing step Pellets characterized by having a Shore hardness (D 1 ) of 30 or more, and adjusting the temperature of the molten resin-impregnated continuous fiber bundle at the entrance of the cutting step so that the Shore hardness (D 2 ) is in the range of 25 to 85. Of manufacturing long fiber-reinforced resin structure.
（Ｄ1）が５５〜９０、ショア硬度（Ｄ2）が３０〜７０
の範囲である請求項１記載のペレット状長繊維強化樹脂
構造物の製造方法。2. The fiber is glass fiber, the Shore hardness (D 1 ) is 55 to 90, and the Shore hardness (D 2 ) is 30 to 70.
The method for producing a pellet-shaped long fiber reinforced resin structure according to claim 1, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20271494A JP3437651B2 (en) | 1994-08-03 | 1994-08-03 | Method for producing pellet-shaped long fiber reinforced resin structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20271494A JP3437651B2 (en) | 1994-08-03 | 1994-08-03 | Method for producing pellet-shaped long fiber reinforced resin structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0847924A JPH0847924A (en) | 1996-02-20 |
| JP3437651B2 true JP3437651B2 (en) | 2003-08-18 |
Family
ID=16461945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20271494A Expired - Fee Related JP3437651B2 (en) | 1994-08-03 | 1994-08-03 | Method for producing pellet-shaped long fiber reinforced resin structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3437651B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3100567B2 (en) * | 1997-09-08 | 2000-10-16 | 旭ファイバーグラス株式会社 | Long fiber reinforced thermoplastic resin molding material |
| JP4703159B2 (en) * | 2004-10-06 | 2011-06-15 | オーウェンスコーニング製造株式会社 | Method for producing long fiber reinforced thermoplastic resin molding material |
| JP2006247950A (en) * | 2005-03-09 | 2006-09-21 | Toyo Mach & Metal Co Ltd | Injection molding machine |
-
1994
- 1994-08-03 JP JP20271494A patent/JP3437651B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0847924A (en) | 1996-02-20 |
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