INJECTION MOLDED ARTICLE AND PRODUCTION METHOD THEREOF

To provide an injection molded article having both rigidity, toughness and aesthetic appearance.SOLUTION: A mixture with a first kneaded material 3a obtained by melt-kneading a first thermoplastic resin 1a and a fibrous filler 2a, and a second kneaded material 3b obtained by melt-kneading a second t...

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Bibliographische Detailangaben
Hauptverfasser: MAMINO MASA, TSUKAMOTO MUNEO, NAKAJIMA AKIRA
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To provide an injection molded article having both rigidity, toughness and aesthetic appearance.SOLUTION: A mixture with a first kneaded material 3a obtained by melt-kneading a first thermoplastic resin 1a and a fibrous filler 2a, and a second kneaded material 3b obtained by melt-kneading a second thermoplastic resin 1b and a thermoplastic elastomer 2b, is injection-molded as a material to produce an injection molded article 5. In the first kneaded material 3a and the second kneaded material 3b, a first shear viscosity of the first kneaded material 3a at a shear rate of 1×10/second is larger than a second shear viscosity of the second kneaded material 3b at the shear rate of 1×10/second.SELECTED DRAWING: Figure 1 【課題】剛性、靱性および美観のいずれもを有する射出成形品を提供する。【解決手段】第1の熱可塑性樹脂1aおよび繊維状フィラー2aを溶融混練してなる第1の混練物3aと、第2の熱可塑性樹脂1bおよび熱可塑性エラストマー2bを溶融混練してなる第2の混練物3bとを混合し、得られた混合物を材料として射出成形して、射出成形品5の製造する。第1の混練物3aおよび第2の混練物3bには、せん断速度1×103/秒での第1の混練物3aの第1せん断粘度が上記せん断速度での第2の混練物3bの第2せん断粘度よりも大きな混練物をそれぞれ用いる。【選択図】図1