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    • 5. 发明申请
    • EXTRUSION BLOW MOLDING APPARATUS FOR PREPARING POLYESTER ARTICLES
    • 挤出吹塑成型设备用于制备聚酯物品
    • WO2012109053A3
    • 2013-01-24
    • PCT/US2012023274
    • 2012-01-31
    • PEPSICO INCSEQUEIRA CLARENCE
    • SEQUEIRA CLARENCE
    • B29C49/04B29C47/06B29C47/10B29C47/26B29C47/60
    • B29C49/04B29C47/0004B29C47/0026B29C47/065B29C47/1018B29C47/265B29C47/6018B29K2067/003
    • An extrusion blow molding apparatus (240) has an extrusion die having an upstream portion for receiving the thermoplastic polyester material and a downstream portion having a die head through which molten thermoplastic polyester material is flowed to form a parison suitable for extrusion blowmolding. The extrusion die has extending therethrough a generally cylindrical barrel (350) and an extrusion screw (300) disposed within the barrel having spiral flights (310) along its length. In some aspects, the flight depths are lengthened so to provide a good melt at a suitable throughput. By also selecting an appropriate extrusion temperature profile, it is possible to eliminate or minimize unmelts, which can contribute to processing difficulties as well as defects in the resulting article. In other aspects, a closed-loop drying system (220A) is provided for achieving very low moisture levels in the polyester material to improve processing.
    • 挤出吹塑设备(240)具有挤出模具,其具有用于接收热塑性聚酯材料的上游部分和具有模头的下游部分,熔融热塑性聚酯材料通过该模头流动,以形成适于挤出吹塑成型的型坯。 挤出模具具有延伸穿过其中的大致圆柱形的筒(350)和设置在筒体内的挤出螺杆(300),其具有沿其长度的螺旋形叶片(310)。 在一些方面,飞行深度被延长,以便以合适的产量提供良好的熔体。 通过选择适当的挤出温度曲线,可以消除或最小化非熔化,这可能导致加工困难以及所得制品中的缺陷。 在其他方面,提供闭环干燥系统(220A),以在聚酯材料中实现非常低的水分含量以改善处理。
    • 6. 发明申请
    • EXTRUSION BLOW MOLDING APPARATUS FOR PREPARING POLYESTER ARTICLES
    • 挤出吹塑成型设备用于制备聚酯物品
    • WO2012109053A2
    • 2012-08-16
    • PCT/US2012/023274
    • 2012-01-31
    • PEPSICO, INC.SEQUEIRA, Clarence
    • SEQUEIRA, Clarence
    • B29C49/04B29C47/60B29C47/10B29C47/06B29C47/26
    • B29C49/04B29C47/0004B29C47/0026B29C47/065B29C47/1018B29C47/265B29C47/6018B29K2067/003
    • An extrusion blow molding apparatus has an extrusion die having an upstream portion for receiving the thermoplastic polyester material and a downstream portion having a die head through which molten thermoplastic polyester material is flowed to form a parison suitable for extrusion blowmolding. The extrusion die has extending therethrough a generally cylindrical barrel and an extrusion screw disposed within the barrel having spiral flights along its length. In some aspects, the flight depths are lengthened so to provide a good melt at a suitable throughput. By also selecting an appropriate extrusion temperature profile, it is possible to eliminate or minimize unmelts, which can contribute to processing difficulties as well as defects in the resulting article. In other aspects, a closed-loop drying system is provided for achieving very low moisture levels in the polyester material to improve processing.
    • 挤出吹塑设备具有挤出模具,其具有用于接收热塑性聚酯材料的上游部分和具有模头的下游部分,熔融热塑性聚酯材料通过该模头流动,以形成适于挤出吹塑成型的型坯。 挤出模具具有大致圆柱形的筒体,并且设置在筒体内的挤出螺杆具有沿其长度的螺旋形飞行。 在一些方面,飞行深度被延长,以便以合适的产量提供良好的熔体。 通过选择适当的挤出温度曲线,可以消除或最小化非熔化,这可能导致加工困难以及所得制品中的缺陷。 在其他方面,提供了一种闭环干燥系统,用于在聚酯材料中实现非常低的水分含量以改善处理。