发明名称 CONTINUOUS FIBER-REINFORCED THERMOPLASTIC RESIN PELLETS AND MANUFACTURING METHOD OF THE SAME
摘要 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 Vf, 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).
申请公布号 US2010098946(A1) 申请公布日期 2010.04.22
申请号 US20080523324 申请日期 2008.03.07
申请人 KABUSHIKI KAISHA KOBE SEIKO SHO(KOBE STEEL, LTD.) 发明人 TASHIRO NAOYUKI;YAMAMOTO ATSUSHI;FUJIURA TAKAYASU;KIKUCHI NAOKI
分类号 B32B27/04;B29C53/14 主分类号 B32B27/04
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