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    • 2. 发明授权
    • Method of manufacturing continuous fiber-reinforced thermoplastic
prepregs
    • 连续纤维增强热塑性预浸料的制造方法
    • US5529652A
    • 1996-06-25
    • US824915
    • 1992-01-22
    • Toshihiro AsaiToshio OharaTatuya TanakaShinji Hashizume
    • Toshihiro AsaiToshio OharaTatuya TanakaShinji Hashizume
    • B29B15/12B29C47/02B29C47/28B05D1/18
    • B29C47/28B29B15/125B29C47/0014B29C47/027B32B38/1866B29K2105/14B29K2105/251
    • A continuous FRTP prepreg manufacturing apparatus comprises an extruder, a crosshead having a main body internally provided with a resin chamber for containing a molten thermoplastic resin extruded therein by the extruder and joined to the discharge end of the extruder, a cooling unit disposed outside and near the exit of the main body of the crosshead, and a winding unit for taking up a prepreg. A fiber bundle inlet unit and a fiber bundle outlet nozzle unit are provided respectively at one end and at the other end of the main body of the crosshead. Guide rollers and impregnating rollers are arranged within the main body of the crosshead so that a tension is applied to the fiber bundle during impregnation or so that the fiber bundle is expanded during impregnation and is condensed after impregnation. The resin-impregnated fiber bundle is heated to a temperature higher than the melting point of the thermoplastic resin at the fiber bundle outlet nozzle unit, and then the resin-impregnated fiber bundle is cooled to a temperature below the melting point of the thermoplastic resin immediately after being delivered from the fiber bundle outlet nozzle unit to form a continuous FRTP prepreg.
    • 连续的FRTP预浸料制造装置包括挤出机,十字头,其主体内部设置有用于容纳通过挤出机挤出的熔融热塑性树脂并与挤出机的排出端接合的树脂室,设置在挤出机外侧和附近的冷却单元 十字头主体的出口和用于卷起预浸料的卷绕单元。 纤维束入口单元和纤维束出口喷嘴单元分别设置在十字头主体的一端和另一端。 引导辊和浸渍辊布置在十字头的主体内,使得在浸渍期间对纤维束施加张力,或者使得纤维束在浸渍期间膨胀并在浸渍后冷凝。 将树脂浸渍的纤维束加热到高于纤维束出口喷嘴单元处的热塑性树脂的熔点的温度,然后将树脂浸渍的纤维束立即冷却到低于热塑性树脂的熔点的温度 在从纤维束出口喷嘴单元传送后形成连续的FRTP预浸料。