JPH06320536A - Long fiber reinforced synthetic resin strand or pellet - Google Patents
Long fiber reinforced synthetic resin strand or pelletInfo
- Publication number
- JPH06320536A JPH06320536A JP11190893A JP11190893A JPH06320536A JP H06320536 A JPH06320536 A JP H06320536A JP 11190893 A JP11190893 A JP 11190893A JP 11190893 A JP11190893 A JP 11190893A JP H06320536 A JPH06320536 A JP H06320536A
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- resin
- fiber
- layer
- strand
- 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- Withdrawn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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、射出成形、射出圧縮成
形、圧縮成形等の製造原料として使用される長繊維強化
合成樹脂ストランドまたはペレットに関し、詳細には、
含浸状態が良好でかつ繊維含有率の高い層と、樹脂リッ
チな層との複合構造を有し、高強度・高弾性の繊維強化
樹脂成形品を与える成形用ストランドまたはペレットに
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to long fiber reinforced synthetic resin strands or pellets used as a raw material for manufacturing injection molding, injection compression molding, compression molding and the like.
The present invention relates to a molding strand or pellet having a composite structure of a layer having a good impregnation state and a high fiber content, and a resin-rich layer, and providing a fiber-reinforced resin molded product having high strength and high elasticity.
【０００２】[0002]
【従来の技術】ＯＡ機器やＡＶ機器等をはじめとする様
々な機器のケーシング材や構造材として用いられている
プラスチック成形品に高強度・高弾性を付与し、あるい
は導電性を付与するための成形材料として、合成樹脂と
強化繊維を複合した成形用ペレットが知られている。一
般に、このような成形用ペレットは強化用短繊維をラン
ダムに樹脂含浸させたものが使用されているが、ＦＲＰ
のさらなる高強度化要求に伴ない、これら従来の短繊維
成形用ペレットでは満足のいく強化効果が得られなくな
ってきた。2. Description of the Related Art For imparting high strength, high elasticity, or conductivity to a plastic molded product used as a casing material or a structural material of various equipment such as OA equipment and AV equipment. As a molding material, a molding pellet in which a synthetic resin and a reinforcing fiber are compounded is known. Generally, such molding pellets are obtained by randomly impregnating reinforcing short fibers with a resin.
With the demand for higher strength, the conventional reinforcing pellets for short fiber molding cannot provide a satisfactory strengthening effect.
【０００３】そこで、長繊維状の強化繊維を複合したペ
レットが考案され、それなりに優れた強化効果を発揮し
ている。しかし、これらの長繊維ペレットには、長繊維
が樹脂と良好な含浸状態となると、モノフィラメント状
に分散することとなって、成形品の耐衝撃強度が期待す
る程向上しないという問題があった。Therefore, pellets in which long fiber-like reinforcing fibers are compounded have been devised, and as a result, an excellent reinforcing effect is exhibited. However, these long-fiber pellets have a problem that when the long fibers are in a good impregnated state with the resin, they are dispersed in a monofilament state, and the impact strength of the molded product is not improved as expected.
【０００４】この問題を解決するために、長繊維がモノ
フィラメント状に分散しない様に繊維束状態で樹脂に含
浸させると、高分子量の樹脂の場合溶融粘度が高くなる
ので、繊維束内部まで樹脂が含浸せずに不均一となって
毛羽立ちやすくなるか、含浸に非常に時間がかかって生
産効率が悪化してしまう。また、樹脂の含浸時の雰囲気
温度を上げることで樹脂粘度を下げて含浸状態の改良を
試みると、樹脂の熱劣化が起こり成形品の強度が低下す
ることが多い。従って、ロービング状長繊維を良好な含
浸状態で、しかも高強度・高弾性を与え得るマトリック
ス樹脂中に複合した長繊維強化ペレットは得られていな
いのが現状である。In order to solve this problem, when the resin is impregnated in a fiber bundle state so that the long fibers are not dispersed in a monofilament state, the melt viscosity becomes high in the case of a high molecular weight resin, so that the resin does not reach the inside of the fiber bundle. It may be non-uniform without being impregnated and easily fluffed, or impregnation will take a very long time and production efficiency will deteriorate. In addition, when an attempt is made to improve the impregnated state by lowering the resin viscosity by increasing the atmospheric temperature at the time of impregnation of the resin, heat deterioration of the resin occurs and the strength of the molded product often decreases. Therefore, under the present circumstances, long fiber reinforced pellets in which the roving long fibers are impregnated in a good condition and which are compounded in a matrix resin capable of giving high strength and high elasticity have not been obtained at present.
【０００５】[0005]
【発明が解決しようとする課題】強化用長繊維を繊維束
状態で樹脂含浸させ、高強度・高弾性の成形品を与え得
る成形用原料を生産性良く提供しようとするものであ
る。SUMMARY OF THE INVENTION It is an object of the present invention to provide, with high productivity, a molding raw material capable of giving a high strength / high elasticity molded product by impregnating a reinforcing long fiber with a resin in a fiber bundle state.
【０００６】[0006]
【課題を解決するための手段】上記課題を解決すること
のできた本発明は、引揃えられた長繊維に合成樹脂を含
浸させてなる長繊維強化合成樹脂ストランドまたは任意
長さに切断された長繊維強化合成樹脂ペレットであっ
て、該ストランドまたはペレットは、繊維含有率の高い
層と、繊維含有率の低い層によって構成されたものであ
るところに要旨を有するものである。DISCLOSURE OF THE INVENTION The present invention, which has been able to solve the above-mentioned problems, provides a long fiber reinforced synthetic resin strand obtained by impregnating aligned long fibers with a synthetic resin, or a long fiber cut to an arbitrary length. A fiber-reinforced synthetic resin pellet, wherein the strands or pellets have a gist in that they are composed of a layer having a high fiber content and a layer having a low fiber content.
【０００７】[0007]
【作用】本発明の成形用ストランドまたはペレットは、
上記の様に、長繊維の強化効果を最大限に発揮させるた
めに、繊維が引き揃えられた状態で良好に樹脂と含浸し
ている部分と、長繊維の含有率が低い部分とからなるこ
とを特徴としている。この繊維含有率の高い部分と低い
部分は、ストランド中で前者がコアで後者がシェルのコ
ア・シェル構造をとったり、前者が「島」で後者が
「海」のいわゆる海島構造（この場合海と島の相溶性を
問題にしているのではなく、複数の島が海の中に存在し
ている構造という意味である）となったり、サイドバイ
サイドの様に２分されていてもよいが、便宜上コア・シ
ェル構造を代表として以下の説明を進めていく。[Function] The molding strand or pellet of the present invention is
As described above, in order to maximize the reinforcing effect of long fibers, it should be composed of a part where the fibers are well aligned and impregnated with the resin, and a part where the long fiber content is low. Is characterized by. The part with high fiber content and the part with low fiber content have a core / shell structure in which the former is the core and the latter is the shell in the strand, or the so-called sea-island structure in which the former is an “island” and the latter is the “sea” (in this case, the sea The compatibility of islands is not a problem, but it means that multiple islands exist in the sea.), Or it may be divided into two parts like side by side, but for convenience, the core・ The following explanation will proceed with the shell structure as a representative.
【０００８】コア層に用いられる合成樹脂は、生産性を
低下させないように引き揃えられた長繊維束（ロービン
グ）の内部にもすばやく含浸できる樹脂、すなわち含浸
時の粘度が低い樹脂であればその素材は特に限定され
ず、従来ＦＲＰ用マトリックス樹脂として公知のエポキ
シ、不飽和ポリエステル、ビニルエステル、フェノー
ル、ポリイミド等の熱硬化性樹脂、ポリアミド、ポリカ
ーボネート、ポリブチレンテレフタレート、ポリオレフ
ィン、ポリアクリレート、ポリフェニレンサルファイ
ド、ポリエーテルスルホン、ポリエーテルエーテルケト
ン、ポリアミドイミド等の熱可塑性樹脂等を使用でき
る。特別に含浸時の粘度を低くするためには、樹脂およ
び繊維の種類や製品の要求特性に応じて、樹脂を低分子
量化する、溶剤や共重合性モノマーで希釈する、含浸時
の雰囲気温度を上げる等の方法を採用すれば良いが、溶
剤や希釈性モノマーを使用するとその揮散が問題となる
ことがある。The synthetic resin used for the core layer can be quickly impregnated into the long fiber bundle (roving) aligned so as not to reduce the productivity, that is, if the viscosity of the impregnated resin is low. The material is not particularly limited, and epoxy resins, which are conventionally known as matrix resins for FRP, unsaturated polyester, vinyl ester, phenol, thermosetting resins such as polyimide, polyamide, polycarbonate, polybutylene terephthalate, polyolefin, polyacrylate, polyphenylene sulfide, Thermoplastic resins such as polyether sulfone, polyether ether ketone and polyamide imide can be used. In order to reduce the viscosity during impregnation, the resin should have a low molecular weight, diluted with a solvent or copolymerizable monomer, and the ambient temperature during impregnation should be adjusted according to the type of resin and fiber and the required properties of the product. A method such as raising the temperature may be adopted, but if a solvent or a diluting monomer is used, the volatilization thereof may become a problem.
【０００９】一方、シェル層に用いられる合成樹脂は、
コア層と同様に上記の樹脂を用いることができるが、特
にコア層に用いた樹脂の欠点を補なえる様な樹脂の使用
が好ましい。例えばコア層に低分子量樹脂や共重合性モ
ノマー成分の多い樹脂を用いた場合には、成形品の耐衝
撃性等の強度向上のために高分子量の樹脂をシェル層に
用いると良い。ここでコア層とシェル層の樹脂は分子量
や含浸時の雰囲気温度を変えることによって粘度を変化
させた同一の樹脂であっても、また溶剤の有無やポリマ
ー種自体等が違う異種組成の樹脂であってもよい。た
だ、コア層とシェル層が剥離してしまわないように、親
和性のある樹脂を選択する必要がある。On the other hand, the synthetic resin used for the shell layer is
The above-mentioned resins can be used in the same manner as the core layer, but it is particularly preferable to use a resin that can make up for the defects of the resin used for the core layer. For example, when a low molecular weight resin or a resin having a large amount of copolymerizable monomer components is used for the core layer, a high molecular weight resin may be used for the shell layer in order to improve the strength such as impact resistance of the molded product. Here, the resin for the core layer and the shell layer may be the same resin whose viscosity is changed by changing the molecular weight or the ambient temperature at the time of impregnation, or a resin having a different composition, such as the presence or absence of a solvent or the polymer type itself. It may be. However, it is necessary to select a resin having affinity so that the core layer and the shell layer are not separated.
【００１０】本発明で用いられる長繊維の素材として
は、炭素繊維、ガラス繊維をはじめ、アラミド繊維、高
強力ポリエチレン、高強力ポリエステル、ボロン、炭化
ケイ素、セラミックス等公知の強化繊維が挙げられる。
コア層における長繊維含有率は合成樹脂に対して１０〜
９０％、より好ましくは３０〜６０％（重量）の範囲で
ある。長繊維量が９０％より多いと、繊維束に対して含
浸不足となって毛羽立ちやすくなり、一方１０％より少
ないと繊維強化効果が発現しない。またシェル層には繊
維が含まれる必然性はなく、好ましい繊維含有率は７０
％以下、より好ましくは６０％以下である。Examples of the material of the long fiber used in the present invention include known reinforcing fibers such as carbon fiber, glass fiber, aramid fiber, high-strength polyethylene, high-strength polyester, boron, silicon carbide and ceramics.
The long fiber content in the core layer is 10 to 10 relative to the synthetic resin.
90%, and more preferably 30 to 60% (weight). When the amount of long fibers is more than 90%, the fiber bundle is not sufficiently impregnated and fluffing easily occurs, while when it is less than 10%, the fiber reinforcing effect is not exhibited. Further, the shell layer does not necessarily contain fibers, and the preferable fiber content is 70%.
% Or less, more preferably 60% or less.
【００１１】コア層とシェル層の比率は重量比で１：３
０〜３０：１、より好ましくは１：１０〜１０：１が適
切範囲である。シェル層が少ないと成形品の強度が低下
し、コア層が少ないとコア層中の繊維量も全体的に少な
くなるのでやはり成形品の強度が低下してしまう。もち
ろん、上述のコア・シェルの数値範囲は、海島構造やサ
イドバイサイド構造を採る場合にもあてはまるものとす
る。The weight ratio of the core layer to the shell layer is 1: 3.
A suitable range is 0 to 30: 1, more preferably 1:10 to 10: 1. If the number of shell layers is small, the strength of the molded product will decrease, and if the number of core layers is small, the amount of fibers in the core layer will also decrease overall, so that the strength of the molded product will also decrease. Of course, the above numerical range of the core / shell is also applicable when the sea-island structure or the side-by-side structure is adopted.
【００１２】本発明の成形品ストランドまたはペレット
は、公知の長繊維強化ストランドまたはペレットの製法
を応用することによって得ることができる。すなわち、
一般的に実施されている長繊維強化ストランドの製法と
しては、たとえば強化用長繊維ロービングが導入される
含浸ヘッドにスクリューもしくはプランジャー型押出装
置の合成樹脂液吐出口を配置し、上記含浸ヘッド内に圧
入された溶融合成樹脂中に前記ロービングを通すことに
よって、ロービングに樹脂を含浸させながら含浸ヘッド
の出口ノズルから引取り後に巻取るものである。これを
長繊維強化ストランドとし、さらに任意の長さ（通常数
〜数十ｍｍ程度）に切断することによって長繊維強化樹
脂ペレットを得ている。The molded product strands or pellets of the present invention can be obtained by applying a known method for producing long fiber-reinforced strands or pellets. That is,
As a generally practiced method for producing long fiber reinforced strands, for example, a screw or a synthetic resin liquid discharge port of a plunger type extruder is arranged in an impregnation head into which reinforcing long fiber roving is introduced, and By passing the roving through the molten synthetic resin press-fitted into, the roving is taken up from the outlet nozzle of the impregnation head while being impregnated with the resin, and then wound. This is used as a long fiber reinforced strand, and further cut into an arbitrary length (usually several to several tens mm) to obtain a long fiber reinforced resin pellet.
【００１３】本発明においてはこうした従来の製法を応
用し、長繊維ロービングをまずコア層用含浸ヘッドまた
は樹脂浴内へ導入してロービング内部までコア層用樹脂
を含浸させ、その後に別の含浸ヘッドまたは樹脂浴でシ
ェル層用樹脂の被覆を行なう方法や、公知の２重構造の
含浸ヘッド（クロスヘッド）を用いる方法等がある。ま
た、海島構造のストランドまたはペレットを製造する場
合には、コア層をコーティングしたロービングを複数本
集めてからシェル層の被覆を行なえば良く、サイドバイ
サイドでは、中に仕切りがあり左右または上下から別々
の溶融樹脂を圧入できる構造の含浸ヘッドを用いればよ
い。後は従来法と同様にして合成樹脂の硬化・引取り・
切断を行なう。また、撚りの有無も適宜選択できる。In the present invention, by applying such a conventional manufacturing method, the long fiber roving is first introduced into the impregnation head for the core layer or the resin bath to impregnate the resin for the core layer to the inside of the roving, and then another impregnation head. Alternatively, there are a method of coating the shell layer resin with a resin bath, a method of using a known double structure impregnation head (crosshead), and the like. Further, in the case of producing a strand or pellet of a sea-island structure, it is sufficient to collect a plurality of rovings coated with a core layer and then coat the shell layer.On the side-by-side, there is a partition inside and separate from left or right or top and bottom. An impregnation head having a structure capable of press-fitting a molten resin may be used. After that, in the same way as in the conventional method, the curing / collection of synthetic resin
Make a disconnection. Also, the presence or absence of twist can be appropriately selected.
【００１４】[0014]
【実施例】以下、実施例を挙げて本発明をより具体的に
説明するが、本発明はもとより下記実施例によって制限
を受けるものではなく、前後記の趣旨に適合し得る範囲
で変更を加えて実施することももちろん可能であり、そ
れらはいずれも本発明の技術的範囲に含まれる。EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited by the following examples, and changes are made within a range that can be adapted to the gist of the preceding and following description. It is of course possible to carry out the present invention, and all of them are included in the technical scope of the present invention.
【００１５】実施例 下記の条件で長繊維強化合成樹脂製品成形用ペレットを
製造した後、さらに下記の条件で射出圧縮成形を行な
い、各射出圧縮成形品の物性を調べ、表１に示す結果を
得た。 （長繊維強化合成樹脂製品成形用ペレット製造条件） 長繊維ロービング：繊維径７μｍ、12,000フィラメント
のロービング３本（東レ社製炭素繊維「トレカＴ３０
０」） 含浸樹脂：コア：分子量15,000のポリカーボネート（帝
人化成社製「パンライトＬ１２５０」） 繊維含有量：４０重量％ シェル：分子量28,000のポリカーボネート 繊維含有量：０重量％ コア対シェル（重量比）１：１ ペレット長さ：６ｍｍExample After producing pellets for molding a long fiber reinforced synthetic resin product under the following conditions, injection compression molding was further performed under the following conditions, and the physical properties of each injection compression molded product were examined. The results shown in Table 1 were obtained. Obtained. (Production conditions for pellets for molding long fiber reinforced synthetic resin products) Long fiber roving: 3 rovings of 12,000 filaments with a fiber diameter of 7 μm (Toray carbon fiber trading card “Torayca T30”
0 ") Impregnating resin: Core: Polycarbonate having a molecular weight of 15,000 (" Panlite L1250 "manufactured by Teijin Chemicals Ltd.) Fiber content: 40 wt% Shell: Polycarbonate having a molecular weight of 28,000 Fiber content: 0 wt% Core to shell (weight ratio) 1: 1 pellet length: 6mm
【００１６】（射出圧縮成形条件） 成形機 住友重機社製「ＳＧ２２０」 シリンダー温度 ２８０〜３３０℃ 金型温度 １２０℃ スクリュー回転数 ５０ｒｐｍ スクリュー径 ４５ｍｍφ 射出速度 １００ｍｍ／ｓｅｃ 冷却時間 ３０ｓｅｃ 圧縮圧 ５００ｋｇ／ｃｍ3 成形品形状：幅１５０ｍｍ×奥行き１５０ｍｍ×深さ２
０ｍｍの弁当箱型(Injection compression molding conditions) Molding machine "SG220" manufactured by Sumitomo Heavy Industries, Ltd. Cylinder temperature 280 to 330 ° C Mold temperature 120 ° C Screw rotation speed 50 rpm Screw diameter 45 mmφ Injection speed 100 mm / sec Cooling time 30 sec Compression pressure 500 kg / cm 3 Molded product shape: width 150 mm x depth 150 mm x depth 2
0 mm lunch box type
【００１７】（物性試験法） 曲げ試験（曲げ強度、曲げ弾性率） 試験片 幅１０ｍｍ×長さ５０ｍｍ×厚さ１．２ｍｍ クロスヘッド速度 ４ｍｍ／ｍｉｎ 支持部の丸み ２．５ｍｍＲ 押さえ部の丸み ５．０ｍｍＲ 支持部間のスパン ４０ｍｍ アイゾット衝撃強度：ＪＩＳ７１１０ 電気抵抗：ＳＲＩＳ２３０１ 電圧・電流法(Physical property test method) Bending test (bending strength, flexural modulus) Specimen width 10 mm x length 50 mm x thickness 1.2 mm Cross head speed 4 mm / min Roundness of support section 2.5 mmR Roundness of pressing section 5 0.0mmR Span between supporting parts 40mm Izod impact strength: JIS7110 Electric resistance: SRIS2301 Voltage / current method
【００１８】比較例１ 長繊維強化合成樹脂製品成形用ペレット製造条件を以下
の様にした以外は実施例と同様にして射出圧縮成形品を
得て、物性評価し、表１にその結果を示した。 長繊維ロービング：繊維径７μｍ、12,000フィラメント
のロービング３本 含浸樹脂：分子量15,000のポリカーボネート 繊維含有量：２０重量％ ペレット長さ：６ｍｍComparative Example 1 An injection compression-molded article was obtained in the same manner as in Example except that the production conditions of pellets for molding a long fiber reinforced synthetic resin product were as follows, and the physical properties were evaluated. The results are shown in Table 1. It was Long fiber roving: Fiber roving 7 μm, 3 rovings of 12,000 filaments Impregnating resin: Polycarbonate with a molecular weight of 15,000 Fiber content: 20% by weight Pellet length: 6 mm
【００１９】比較例２ 長繊維強化合成樹脂製品成形用ペレット製造条件を以下
の様にした以外は実施例と同様にして射出圧縮成形品を
得て、物性評価し、表１にその結果を示した。 長繊維ロービング：繊維径７μｍ、12,000フィラメント
のロービング３本 含浸樹脂：分子量28,000のポリカーボネート 繊維含有量：２０重量％ ペレット長さ：６ｍｍComparative Example 2 An injection compression molded article was obtained in the same manner as in Example except that the production conditions of pellets for molding a long fiber reinforced synthetic resin product were as follows, and the physical properties were evaluated. The results are shown in Table 1. It was Long-fiber roving: 3 rovings of 12,000 filaments with a fiber diameter of 7 μm Impregnating resin: Polycarbonate with a molecular weight of 28,000 Fiber content: 20% by weight Pellet length: 6 mm
【００２０】[0020]
【表１】 [Table 1]
【００２１】[0021]
【発明の効果】本発明は以上の様に構成されており、以
下の効果を有する優れた長繊維強化合成樹脂ストランド
またはペレットを提供することができた。 長繊維が束となって引き揃えられた状態を保ったスト
ランドまたはペレットであるため、成形品の耐衝撃強度
が良好なものとなる。 繊維束を含浸させるための樹脂は低粘度のものであ
り、含浸スピードが速く生産性を低下させることがな
い。 繊維束を含浸させるための樹脂以外に、該樹脂の分子
量不足等の問題を補うための樹脂を使用した複合ストラ
ンドまたはペレットであるので高強度・高弾性の成形品
が得られる。 長繊維束が完全に樹脂に含浸しているため、毛羽立ち
が起きにくい。 特に炭素繊維の様な導電性繊維を使用すると、電気伝
導度良好な成形品を得ることができる。EFFECTS OF THE INVENTION The present invention is constituted as described above, and was able to provide an excellent long fiber reinforced synthetic resin strand or pellet having the following effects. Since it is a strand or pellet in which long fibers are bundled and kept aligned, the impact resistance of the molded product is improved. The resin for impregnating the fiber bundle has a low viscosity, has a high impregnation speed, and does not reduce productivity. In addition to the resin for impregnating the fiber bundle, since it is a composite strand or pellet using a resin for compensating for the problem of insufficient molecular weight of the resin, a molded product of high strength and high elasticity can be obtained. Since the long fiber bundle is completely impregnated with resin, fluffing does not easily occur. In particular, when a conductive fiber such as carbon fiber is used, a molded product having good electric conductivity can be obtained.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 示野 医晃 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 (72) Inventor Ikeno Ikko, 5-5 Takatsukadai, Nishi-ku, Kobe-shi, Hyogo Prefecture Kobe Steel Works, Ltd. Kobe Research Institute
Claims (3)
せてなる長繊維強化合成樹脂ストランドまたは任意長さ
に切断された長繊維強化合成樹脂製品ペレットであっ
て、該ストランドまたはペレットは、繊維含有率の高い
層と、繊維含有率の低い層によって構成されたものであ
ることを特徴とする長繊維強化合成樹脂ストランドまた
はペレット。1. A long-fiber-reinforced synthetic resin strand obtained by impregnating aligned long fibers with a synthetic resin, or a long-fiber-reinforced synthetic resin product pellet cut into an arbitrary length, the strand or pellet comprising: A long-fiber-reinforced synthetic resin strand or pellet, which is composed of a layer having a high fiber content and a layer having a low fiber content.
して長繊維および低分子量合成樹脂からなるコア層と、
主として高分子量合成樹脂からなるシェル層によって構
成されたものである請求項１に記載の長繊維強化合成樹
脂ストランドまたはペレット。2. The core layer, wherein the strands or pellets are mainly composed of long fibers and a low molecular weight synthetic resin,
The long fiber reinforced synthetic resin strand or pellet according to claim 1, which is mainly composed of a shell layer made of a high molecular weight synthetic resin.
ットが、主として長繊維および低分子量合成樹脂からな
る複数の島相当部と、主として高分子量合成樹脂からな
る海相当部によって海島構造に構成されたものである請
求項１に記載の長繊維強化合成樹脂ストランドまたはペ
レット。3. The strand or pellet according to claim 1 has a sea-island structure composed of a plurality of island-corresponding portions mainly composed of long fibers and a low molecular weight synthetic resin and a sea-corresponding portion mainly composed of a high molecular weight synthetic resin. The long fiber-reinforced synthetic resin strand or pellet according to claim 1, which is one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11190893A JPH06320536A (en) | 1993-05-13 | 1993-05-13 | Long fiber reinforced synthetic resin strand or pellet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11190893A JPH06320536A (en) | 1993-05-13 | 1993-05-13 | Long fiber reinforced synthetic resin strand or pellet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06320536A true JPH06320536A (en) | 1994-11-22 |
Family
ID=14573142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11190893A Withdrawn JPH06320536A (en) | 1993-05-13 | 1993-05-13 | Long fiber reinforced synthetic resin strand or pellet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06320536A (en) |
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1993
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Legal Events
| Date | Code | Title | Description |
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| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000801 |