JP2827506B2 - Reinforced fiber composite thermoplastic resin pellets - Google Patents
Reinforced fiber composite thermoplastic resin pelletsInfo
- Publication number
- JP2827506B2 JP2827506B2 JP32745290A JP32745290A JP2827506B2 JP 2827506 B2 JP2827506 B2 JP 2827506B2 JP 32745290 A JP32745290 A JP 32745290A JP 32745290 A JP32745290 A JP 32745290A JP 2827506 B2 JP2827506 B2 JP 2827506B2
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- Prior art keywords
- thermoplastic resin
- core
- pellet
- fiber composite
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Description
【発明の詳細な説明】 ＜産業上の利用分野＞ この発明は、熱可塑性樹脂と強化繊維とを複合してな
る繊維強化熱可塑性樹脂（FRTP）成形品を製造するとき
に使用するペレットに関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a pellet used for producing a fiber-reinforced thermoplastic resin (FRTP) molded product obtained by combining a thermoplastic resin and a reinforcing fiber.
＜従来の技術＞ 射出成形によってFRTP成形品を製造するとき、熱可塑
性樹脂とガラス繊維や炭素繊維等の強化繊維とを複合し
てなるペレットがよく使用される。<Prior Art> When an FRTP molded product is manufactured by injection molding, a pellet made of a composite of a thermoplastic resin and a reinforcing fiber such as glass fiber or carbon fiber is often used.
このようなペレットの多くは、強化繊維の平均長が0.
3mm程度の、短繊維複合ペレットと呼ばれるもので、強
化繊維が短いことから成形時の流動性がよく、比較的均
質で物性むらの少ないFRTP成形品を得ることができる。
しかしながら、得られる成形品の物性は、熱可塑性樹脂
のみからなるものにくらべれば優れるものの、それほど
高くはない。Many of these pellets have an average reinforcing fiber length of 0.
It is a short fiber composite pellet having a length of about 3 mm. Since the reinforcing fibers are short, the fluidity during molding is good, and it is possible to obtain an FRTP molded product that is relatively uniform and has little unevenness in physical properties.
However, although the physical properties of the obtained molded article are excellent as compared with those made of only the thermoplastic resin, they are not so high.
一方、互いに並行する強化繊維を含み、しかも、強化
繊維の平均長（ペレットの長さに実質的に等しい）が２
〜7mm程度である長繊維複合ペレットも提案されている
（特公昭63−37694号公報）。このペレットを使用して
得られるFRTP成形品は、強化繊維が平均長２〜7mm程度
と長いことから、上述した短繊維複合ペレットによるも
のにくらべて一般的に物性が優れており、注目されてい
る。しかしながら、このペレットは、成形機への噛み込
み性が不安定で、単位時間当りの可塑化量が変動しやす
いという問題があって、物性むらの少ないFRTP成形品を
得ることは、なかなか難しい。On the other hand, it contains reinforcing fibers parallel to each other, and the average length of the reinforcing fibers (substantially equal to the length of the pellet) is 2
A long fiber composite pellet having a diameter of about 7 mm has also been proposed (Japanese Patent Publication No. 63-37694). FRTP molded products obtained using these pellets, since the reinforcing fibers are as long as an average length of about 2 to 7 mm, generally have better physical properties than those of the short fiber composite pellets described above, I have. However, these pellets have a problem that the biteability of the pellets into a molding machine is unstable and the amount of plasticization per unit time is liable to fluctuate, so that it is difficult to obtain an FRTP molded product having less unevenness in physical properties.
＜発明が解決しようとする課題＞ この発明の目的は、従来のペレットの上述した問題点
を解決し、成形性に優れ、しかも、物性に優れたFRTP成
形品を製造することができる強化繊維複合熱可塑性樹脂
ペレットを提供するにある。<Problems to be Solved by the Invention> An object of the present invention is to solve the above-mentioned problems of the conventional pellets, and to form a reinforced fiber composite which is excellent in moldability and can produce an FRTP molded product excellent in physical properties. PROBLEM TO BE SOLVED: To provide a thermoplastic resin pellet.
＜課題を解決するための手段＞ 上記目的を達成するために、この発明は、熱可塑性樹
脂および強化繊維を含む芯体部と、この芯体部の外周に
その芯体部と一体に形成された熱可塑性樹脂製皮体部と
を有することを特徴とする強化繊維複合熱可塑性樹脂ペ
レットを提供する。<Means for Solving the Problems> In order to achieve the above object, the present invention provides a core body including a thermoplastic resin and a reinforcing fiber, and an outer periphery of the core body, which is formed integrally with the core body. A reinforcing fiber composite thermoplastic resin pellet characterized by having a thermoplastic resin skin portion.
また、この発明は、熱可塑性樹脂および互いに並行す
る強化繊維を含む芯体部と、この芯体部の外周にその芯
体部と一体に形成された、平均厚みが0.1〜0.5mmの範囲
にある熱可塑性樹脂製皮体部とを有し、かつ、強化繊維
の含有率が30〜55重量％の範囲にあり、平均長が５〜15
mmの範囲にあり、平均直径が２〜5mmの範囲にあること
を特徴とする強化繊維複合熱可塑性樹脂ペレットを提供
する。Further, the present invention provides a core body containing a thermoplastic resin and reinforcing fibers parallel to each other, and an average thickness formed in one piece with the core body on the outer periphery of the core body, in the range of 0.1 to 0.5 mm. A thermoplastic resin skin portion, and the content of reinforcing fibers is in the range of 30 to 55% by weight, and the average length is 5 to 15%.
The present invention provides a reinforcing fiber composite thermoplastic resin pellet having a diameter in the range of 2 mm to 2 mm.
この発明のペレットは、これを溶融し、射出成形する
ことによって、FRTP成形品を製造することができるもの
である。The pellets of the present invention can be used to produce FRTP molded articles by melting and injection molding.
さて、芯体部および皮体部には、通常、同一種類の熱
可塑性樹脂を選択、使用する。そのような熱可塑性樹脂
としては、ナイロン６、ナイロン66、ナイロン46、ナイ
ロン610、ナイロン612等のポリアミドや、これらの共重
合ポリアミドを使用することができる。また、ポリエチ
レンテレフタレート、ポリブチレンテレフタレート等の
ポリエステルや、これらの共重合ポリエステルを使用す
ることができる。さらに、ポリカーボネート、ポリエー
テルイミド、ポリアミドイミド、ポリフェニレンスルフ
ィド、ポリフェニレンオキシド、ポリスルホン、ポリエ
ーテルスルホン、ポリエーテルエーテルケトン等を使用
することができる。さらにまた、ポリウレタンエラスト
マー、ポリエステルエラストマー、ポリアミドエラスト
マー等に代表される熱活性エラストマーを使用すること
ができる。Now, the same kind of thermoplastic resin is usually selected and used for the core portion and the skin portion. As such a thermoplastic resin, polyamides such as nylon 6, nylon 66, nylon 46, nylon 610, and nylon 612, and copolymerized polyamides thereof can be used. In addition, polyesters such as polyethylene terephthalate and polybutylene terephthalate, and copolymerized polyesters thereof can be used. Further, polycarbonate, polyetherimide, polyamideimide, polyphenylene sulfide, polyphenylene oxide, polysulfone, polyethersulfone, polyetheretherketone, and the like can be used. Furthermore, heat-active elastomers represented by polyurethane elastomers, polyester elastomers, polyamide elastomers and the like can be used.
熱可塑性樹脂としては、また、上述した熱可塑性樹脂
から選択した少なくとも２種の熱可塑性樹脂の混合樹
脂、たとえば、ナイロン６とナイロン66との混合樹脂、
ポリエチレンテレフタレートとポリブチレンテレフタレ
ートとの混合樹脂を使用することもできる。同系のもの
の混合樹脂であるのが好ましい。As the thermoplastic resin, a mixed resin of at least two kinds of thermoplastic resins selected from the above-described thermoplastic resins, for example, a mixed resin of nylon 6 and nylon 66,
A mixed resin of polyethylene terephthalate and polybutylene terephthalate can also be used. It is preferably a mixed resin of the same type.
また、熱可塑性樹脂は、溶融粘度が500〜5000ポイズ
の範囲にあるものが好ましい。すなわち、FRTP成形品の
物性をより向上させるためには、熱可塑性樹脂は、溶融
粘度が高いもの（分子量が高いもの）であるのが好まし
く、溶融粘度が500ポイズより低いような熱可塑性樹脂
によっては、成形品の、特に耐衝撃性が十分に向上しな
いことがある。また、5000ポイズよりも高いような熱可
塑性樹脂を使用すると、ガラス繊維との漏れ性や接着性
が低下して芯体部に気泡が発生することがあり、その場
合、得られる成形品の物性が低下する。なお、溶融粘度
は、成形または後加工に適用される温度下において、キ
ャピラリー型粘度計を使用して、剪断速度が零sec
-1か、その付近において測定する。The thermoplastic resin preferably has a melt viscosity in the range of 500 to 5000 poise. That is, in order to further improve the physical properties of the FRTP molded product, it is preferable that the thermoplastic resin has a high melt viscosity (high molecular weight), and the thermoplastic resin has a melt viscosity lower than 500 poise. In some cases, especially the impact resistance of the molded product is not sufficiently improved. In addition, when a thermoplastic resin having a viscosity higher than 5,000 poise is used, air leakage may occur in the core body due to a decrease in leakiness and adhesiveness with glass fibers, and in that case, physical properties of the obtained molded article Decrease. The melt viscosity was measured at a temperature applied to molding or post-processing using a capillary type viscometer at a shear rate of zero sec.
Measure at or near -1 .
さて、芯体部における強化繊維は、無作為な方向に向
いていてもよいか、芯体部の長さ方向に引き揃えられ、
互いに並行しているのが好ましい。この場合、ペレット
の長さは強化繊維の長さと実質的に等しくなる。Now, the reinforcing fibers in the core portion may be oriented in a random direction or are aligned in the length direction of the core portion,
Preferably they are parallel to each other. In this case, the length of the pellet is substantially equal to the length of the reinforcing fiber.
強化繊維としては、ガラス繊維、炭素繊維、アラミド
繊維等の高強度、高弾性率繊維を使用する。単繊維径
は、５〜30μｍ程度である。なお、これらの強化繊維に
は、通常、ハンドリング性を改善するためのバインダを
付与したり、複合される熱可塑性樹脂との接着性を改善
するための表面処理を施しておく。バインダの種類、付
与量や、表面処理の方法等は、強化繊維の種類や熱可塑
性樹脂の種類等に応じて選択する。High-strength, high-modulus fibers such as glass fibers, carbon fibers, and aramid fibers are used as the reinforcing fibers. The single fiber diameter is about 5 to 30 μm. Incidentally, these reinforcing fibers are usually provided with a binder for improving the handleability, or subjected to a surface treatment for improving the adhesiveness with the thermoplastic resin to be composited. The type and amount of the binder, the method of surface treatment, and the like are selected according to the type of the reinforcing fiber, the type of the thermoplastic resin, and the like.
強化繊維の平均長は、強化繊維が上述したように芯体
部の長さ方向において並行しているときは、５〜15mmの
範囲にある。5mmよりも短いと、FRTP成形品の物性、特
に耐衝撃性が低下する。また、15mmよりも長いと、成形
機への噛み込み性が不安定になったり、成形品の均質性
が低下したりする。The average length of the reinforcing fibers is in the range of 5 to 15 mm when the reinforcing fibers are parallel in the length direction of the core portion as described above. If it is shorter than 5 mm, the physical properties of the FRTP molded product, particularly the impact resistance, are reduced. On the other hand, if it is longer than 15 mm, the biting property of the molding machine becomes unstable or the homogeneity of the molded product is reduced.
さて、皮体部は、芯体部の外周にそれと一体に形成さ
れているが、その平均厚みは、好ましくは0.1〜0.5mmの
範囲にある。0.1mmよりも薄いと、成形機への噛み込み
性が低下したり、成形品の均質性が低下したりすること
がある。また、0.5mmよりも厚いと、ペレットとしてみ
た強化繊維の含有率が低くなって、その分、FRTP成形品
の物性が低下するようになる。The skin portion is formed integrally with the outer periphery of the core portion, and its average thickness is preferably in the range of 0.1 to 0.5 mm. If the thickness is less than 0.1 mm, the biting performance of the molding machine may be reduced, or the uniformity of the molded product may be reduced. On the other hand, if the thickness is more than 0.5 mm, the content of the reinforcing fibers as pellets becomes low, and the physical properties of the FRTP molded product are reduced accordingly.
ペレット中における強化繊維の含有率は、好ましくは
30〜55重量％の範囲にある。30重量％未満では、FRTP成
形品の物性、特に耐衝撃性が低くなることがある。ま
た、55重量％よりも高くなると、芯体部に気泡が発生し
たり、溶融時の流動性が低下したり、成形機への噛み込
み性が不安定になったりすることがあり、その場合、得
られる成形品の物性や均質性が低下する。The content of the reinforcing fibers in the pellets is preferably
It is in the range of 30-55% by weight. If it is less than 30% by weight, the physical properties of the FRTP molded product, particularly the impact resistance, may be low. On the other hand, if the content is higher than 55% by weight, bubbles may be generated in the core body, the fluidity at the time of melting may be reduced, and the biting property of the molding machine may become unstable. In addition, the physical properties and homogeneity of the obtained molded article are reduced.
ペレットの平均長は、強化繊維が上述したように芯体
部の長さ方向において並行しているときは、５〜15mmの
範囲にする。その理由は、平均長５〜15mmの強化繊維を
使用する理由と同じである。The average length of the pellets is in the range of 5 to 15 mm when the reinforcing fibers are parallel in the length direction of the core portion as described above. The reason is the same as the reason for using a reinforcing fiber having an average length of 5 to 15 mm.
ペレットの平均直径は、好ましくは２〜5mmの範囲に
ある。2mm未満であったり、5mmを超えていたりすると、
成形性が低下したり、得られるFRTP成形品の物性が低下
したりすることがある。The average diameter of the pellets is preferably in the range from 2 to 5 mm. If it is less than 2 mm or more than 5 mm,
Moldability may be reduced, or physical properties of the obtained FRTP molded product may be reduced.
この発明のペレットは、たとえば、次のようにして製
造することができる。The pellet of the present invention can be manufactured, for example, as follows.
すなわち、よく知られた方法、たとえば特公昭63−37
694号公報に記載される方法により、まず、強化繊維の
ストランドを連続的に走行させながら溶融した熱可塑性
樹脂を含浸し、冷却して、芯体部を得る。次に、この芯
体部を溶融した熱可塑性樹脂中に通し、円形ダイを通し
て引き抜いて皮体部を形成した後、所望の長さに切断し
てペレットとする。芯体部を、その熱可塑性樹脂が固化
しないうちに溶融熱可塑性樹脂中に通し、同様に円形ダ
イを通して引き抜いて皮体部を形成した後、所望の長さ
に切断する方法によることもできる。That is, well-known methods, for example, JP-B-63-37
According to the method described in Japanese Patent Publication No. 694, first, a strand of reinforcing fiber is impregnated with a molten thermoplastic resin while continuously running, and then cooled to obtain a core portion. Next, the core portion is passed through a molten thermoplastic resin, pulled out through a circular die to form a skin portion, and then cut into a desired length to form a pellet. The core portion may be passed through a molten thermoplastic resin before the thermoplastic resin is solidified, similarly pulled out through a circular die to form a skin portion, and then cut to a desired length.
＜実 施 例＞ 実施例１ 日本電気硝子社製ガラス繊維ストランド（単繊維径:1
7μｍ、単繊維数:2000本）を、４本束ねて、押出機のヘ
ッドに設けたダイ（温度:280℃）に導きながら、押出機
から、ダイに、東レ社製ナイロン６“アミラン"CM1001
（280℃における溶融粘度:1000ポイズ）を供給してガラ
ス繊維に含浸し、さらに、円形ダイを通して引き抜き、
冷却して、平均直径が2.4mmの芯体部を得た。この芯体
部におけるガラス繊維の含有率は、60重量％であった。Example 1 Example 1 Glass fiber strand (single fiber diameter: 1 manufactured by NEC Corporation)
7 μm, the number of single fibers: 2,000), and while bundling four to a die (temperature: 280 ° C.) provided on the extruder head, the extruder applied the nylon 6 “Amilan” CM1001 manufactured by Toray Co., Ltd. to the die.
(Melt viscosity at 280 ° C .: 1000 poises) to impregnate the glass fiber, and then withdraw through a circular die,
After cooling, a core having an average diameter of 2.4 mm was obtained. The glass fiber content in this core was 60% by weight.
次に、この芯体部を、別の押出機のヘッドに設けたク
ロスヘッドダイ（温度280℃）に導きながら、押出機か
らダイに上記ナイロン６を供給して芯体部を濡らした
後、直径3.1mmの円形ダイを通して引き抜いて芯体部の
外周に皮体部を形成し、さらに、10mmの長さに切断して
ペレットを得た。このペレットにおける皮体部の平均厚
みは、0.25mmであった。また、ペレットの平均直径は2.
9mmで、ガラス繊維の含有率は45重量％であった。Next, the nylon 6 was supplied from the extruder to the die while the core was guided to a crosshead die (temperature: 280 ° C.) provided on the head of another extruder to wet the core. It was pulled out through a circular die having a diameter of 3.1 mm to form a skin on the outer periphery of the core body, and further cut into a length of 10 mm to obtain a pellet. The average thickness of the skin portion in this pellet was 0.25 mm. The average diameter of the pellet is 2.
At 9 mm, the glass fiber content was 45% by weight.
次に、上記ペレットを、東芝社製IS100F1−5A型射出
成形機を使用して、シリンダー設定温度を290℃、金型
温度を80℃、射出／冷却時間を13/20秒として射出成形
し、厚みが1/8インチの試験片を得た。このとき、成形
機への噛み込み性は極めて良好で、可塑化時間も3.0〜
3.5秒とよく安定していた。Next, using a Toshiba IS100F1-5A type injection molding machine, the pellets were injection-molded at a cylinder set temperature of 290 ° C., a mold temperature of 80 ° C., and an injection / cooling time of 13/20 seconds, A test piece having a thickness of 1/8 inch was obtained. At this time, the biting property to the molding machine is extremely good, and the plasticizing time is 3.0 to
It was stable at 3.5 seconds.
次に、上記試験片について、曲げ試験とノッチ付アイ
ゾット衝撃試験を行なったところ、曲げ強度は38kgf/mm
2、曲げ弾性率は1450kgf/mm2、衝撃強さは35kgf・cm/cm
2であった。なお、曲げ試験はASTM D790により、ま
た、衝撃試験はASTM D256によった。Next, when a bending test and a notched Izod impact test were performed on the test piece, the bending strength was 38 kgf / mm.
2, the flexural modulus 1450kgf / mm 2, impact strength 35 kgf · cm / cm
Was 2 . The bending test was performed according to ASTM D790, and the impact test was performed according to ASTM D256.
実施例２ 実施例１と同様にして、しかしながら、異なる口径の
円形ダイを使用して、皮体部の平均厚みが0.1mmである
ペレットを得た。このペレットの平均直径は2.6mmであ
り、ガラス繊維の含有率は54重量％であった。Example 2 In the same manner as in Example 1, however, pellets having an average thickness of the skin portion of 0.1 mm were obtained using circular dies having different diameters. The average diameter of the pellets was 2.6 mm, and the content of glass fibers was 54% by weight.
次に、実施例１と全く同様にして試験片を成形し、試
験したところ、曲げ強度は40kgf/mm2、曲げ弾性率は165
0kgf/mm2、衝撃強さは38kgf・cm/cm2であった。なお、
成形時における成形機への噛み込み性は良好で、可塑化
時間もやはり3.0〜3.5秒と極めて安定していた。Next, a test piece was molded and tested in exactly the same manner as in Example 1, and the flexural strength was 40 kgf / mm 2 and the flexural modulus was 165.
The impact strength was 0 kgf / mm 2 and the impact strength was 38 kgf · cm / cm 2 . In addition,
The biting property into the molding machine during molding was good, and the plasticization time was also extremely stable at 3.0 to 3.5 seconds.
＜比 較 例＞ 実施例１と同様にして、しかしながら、口径の異なる
円形ダイを使用して、平均直径2.7mmの芯体部を得た
後、この芯体部を長さ10mmに切断し、皮体部を有しない
ペレットとした。このペレットのガラス繊維含有率は、
50重量％であった。<Comparative Example> In the same manner as in Example 1, however, using a circular die having a different diameter, after obtaining a core having an average diameter of 2.7 mm, the core was cut into a length of 10 mm. A pellet having no skin portion was obtained. The glass fiber content of this pellet is
It was 50% by weight.
次に、実施例１と全く同様にして試験片を成形し、試
験したところ、曲げ強度は37kgf/mm2、曲げ弾性率は160
0kgf/mm2、衝撃強さは36kgf・cm/cm2であり、実施例の
ものとあまり変わらなかった。しかしながら、成形時に
おける成形機への噛み込み性にやや難があり、また、可
塑化時間が5.0〜8.0秒と極めて不安定であった。Next, a test piece was molded and tested in exactly the same manner as in Example 1, and the flexural strength was 37 kgf / mm 2 and the flexural modulus was 160.
It was 0 kgf / mm 2 and the impact strength was 36 kgf · cm / cm 2 , which was not much different from that of the example. However, there was some difficulty in biting into the molding machine during molding, and the plasticization time was extremely unstable, 5.0 to 8.0 seconds.
＜発明の効果＞ この発明の強化繊維複合熱可塑性樹脂ペレットは、芯
体部の外周にその芯体部と一体に形成された熱可塑性樹
脂製皮体部を有するので、実施例と比較例との対比から
も明らかなように、成形性に優れ、しかも、力学的物性
に優れたFRTP成形品を得ることができるようになる。<Effect of the Invention> Since the reinforcing fiber composite thermoplastic resin pellet of the present invention has a thermoplastic resin skin portion integrally formed with the core portion on the outer periphery of the core portion, the example and the comparative example As is clear from the comparison, it becomes possible to obtain an FRTP molded product having excellent moldability and excellent mechanical properties.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭63−30209（ＪＰ，Ａ) 特開 昭58−215313（ＪＰ，Ａ) 特開 昭63−239032（ＪＰ，Ａ) 特開 平３−61516（ＪＰ，Ａ) (58)調査した分野(Int.Cl.6，ＤＢ名) B29B 9/00 - 9/16──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-63-30209 (JP, A) JP-A-58-215313 (JP, A) JP-A-63-239032 (JP, A) JP-A-3-3 61516 (JP, A) (58) Field surveyed (Int. Cl. 6 , DB name) B29B 9/00-9/16
Claims (3)
と、この芯体部の外周にその芯体部と一体に形成された
熱可塑性樹脂製皮体部とを有することを特徴とする強化
繊維複合熱可塑性樹脂ペレット。1. A core body containing a thermoplastic resin and a reinforcing fiber, and a thermoplastic resin skin formed integrally with the core on the outer periphery of the core. Reinforced fiber composite thermoplastic resin pellets.
維を含む芯体部と、この芯体部の外周にその芯体部と一
体に形成された、平均厚みが0.1〜0.5mmの範囲にある熱
可塑性樹脂製皮体部とを有し、かつ、強化繊維の含有率
が30〜55重量％の範囲にあり、平均長が５〜15mmの範囲
にあり、平均直径が２〜5mmの範囲にあることを特徴と
する強化繊維複合熱可塑性樹脂ペレット。2. A core body containing a thermoplastic resin and reinforcing fibers parallel to each other, and an average thickness in the range of 0.1 to 0.5 mm formed integrally with the core body on the outer periphery of the core body. Having a thermoplastic resin skin portion, and the reinforcing fiber content is in the range of 30 to 55% by weight, the average length is in the range of 5 to 15 mm, and the average diameter is in the range of 2 to 5 mm. Reinforced fiber composite thermoplastic resin pellets.
融し、射出成形することを特徴とする繊維強化熱可塑性
樹脂成形品の製造方法。3. A method for producing a fiber-reinforced thermoplastic resin molded product, comprising melting the pellet according to claim 1 or 2 and subjecting the pellet to injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32745290A JP2827506B2 (en) | 1990-11-27 | 1990-11-27 | Reinforced fiber composite thermoplastic resin pellets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32745290A JP2827506B2 (en) | 1990-11-27 | 1990-11-27 | Reinforced fiber composite thermoplastic resin pellets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04193504A JPH04193504A (en) | 1992-07-13 |
| JP2827506B2 true JP2827506B2 (en) | 1998-11-25 |
Family
ID=18199322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32745290A Expired - Lifetime JP2827506B2 (en) | 1990-11-27 | 1990-11-27 | Reinforced fiber composite thermoplastic resin pellets |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2827506B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MX2013013507A (en) | 2011-05-31 | 2014-02-27 | Teijin Ltd | Method for manufacturing compact with sustained isotropy. |
-
1990
- 1990-11-27 JP JP32745290A patent/JP2827506B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04193504A (en) | 1992-07-13 |
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