发明名称 |
PROCESS FOR PRODUCING CONTINUOUS FIBER REINFORCED THERMOPLASTIC RESIN PELLET |
摘要 |
<p>To provide continuous fiber-reinforced thermoplastic pellets having a good dispersion property of a reinforcing fiber bundle in injection molded articles and capable of achieving a satisfactory outward appearance of the injection molded articles and satisfying a mechanical strength of the injection molded articles by fully exerting the reinforcing effect, and a manufacturing method of the same. In continuous fiber-reinforced thermoplastic resin pellets manufactured by letting a long reinforcing fiber bundle be impregnated with molten thermoplastic resin and pultruding the resin-impregnated reinforcing fiber bundle with twisting, followed by the cutting of a rod-shaped composition formed of the twisted resin-impregnated reinforcing fiber bundle into pellets, a volume filling ratio V f , which is a proportion of a cross section area of the reinforcing fiber bundle in a cross section area of a pellet cross section in a direction perpendicular to a pellet longitudinal direction, is in a range of 70% to 20%, and a twisting pitch P given by P = L/d (where L is a traveling length of a twist in a rod-shaped composition longitudinal direction per rotation of the rod-shaped composition, and d is a diameter of a circle comparable to an area of a rod-shaped composition cross section) is in a range of 2.5 to 36 (m/rev·m).</p> |
申请公布号 |
EP2130658(A1) |
申请公布日期 |
2009.12.09 |
申请号 |
EP20080721538 |
申请日期 |
2008.03.07 |
申请人 |
KABUSHIKI KAISHA KOBE SEIKO SHO |
发明人 |
YAMAMOTO, ATSUSHI;FUJIURA, TAKAYASU;KIKUCHI, NAOKI |
分类号 |
B29B15/12;B29B9/14;B29C47/00;B29C47/02;B29C53/14 |
主分类号 |
B29B15/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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