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    • 38. 发明授权
    • Method for producing a pellet from a fiber-filled resin composition and injection-molded products thereof
    • 从纤维填充树脂组合物及其注射成型体制造颗粒的方法
    • US07641833B2
    • 2010-01-05
    • US10594679
    • 2005-04-12
    • Kei AokiMasayuki SakaiKazufumi Watanabe
    • Kei AokiMasayuki SakaiKazufumi Watanabe
    • B29C47/60B29B7/24
    • B29B9/14B29B7/90B29C47/1081B29C47/6025B29C47/6031B29C47/6037B29C47/6056B29C2947/9218B29C2947/92704
    • An object of the present invention is to economically produce a resin composition pellet with the degradation of resin suppressed, by using an ordinary extruder, the resin composition pellet being filled with a desired filling amount of a uniformly compounded fibrous filler, and having a required weight average fiber length, in particular, to produce a resin composition pellet used for a socket of a planar socket pin in which the pitch interval of a lattice area of a semiconductor device is 2.0 mm or less, the thickness of the lattice area is 0.5 mm or less, and the height of the socket is 5.0 mm or less. To achieve the object, in supplying 80 to 55% by weight of resin and 20 to 45% by weight of the fibrous filler with a weight average fiber length of 1 mm or more to an extruder to produce a resin composition pellet in which a weight average fiber length of a fibrous filler is 180 to 360 μm, a part of an amount (x) of the resin is supplied through a main feed port of the extruder, and the fibrous filler and a remaining amount (1−x) of the resin are supplied through a side-feed port so that x/(1−x) becomes 50/50 to 10/90% by weight.
    • 本发明的目的是通过使用普通的挤出机经济地生产树脂降解降解的树脂组合物颗粒,所述树脂组合物颗粒填充有所需的填充量的均匀复合的纤维填料并具有所需的重量 平均纤维长度,特别是为了制造用于平面插座销的插座的树脂组合物颗粒,其中半导体器件的晶格面积的间距间隔为2.0mm或更小,晶格面积的厚度为0.5mm 以下,插座的高度为5.0mm以下。 为了达到上述目的,向挤出机中供给80〜55重量%的树脂和20〜45重量%的重均纤维长度为1mm以上的纤维填料,制成树脂组合物颗粒,其中重量 纤维填料的平均纤维长度为180〜360μm,树脂的量(x)的一部分通过挤出机的主供料口供给,纤维填料的剩余量(1-x) 树脂通过侧进料口供给,使得x /(1-x)成为50/50至10/90重量%。