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1.发明授权
公开(公告)号：US4321229A
公开(公告)日：1982-03-23
申请号：US199651
申请日：1980-10-22
申请人： Theodore R. Blakeslee, III , Stuart J. Kurtz , Leonard S. Scarola , John C. Miller , James D. Engle , Jerome T. Horner
发明人： Theodore R. Blakeslee, III , Stuart J. Kurtz , Leonard S. Scarola , John C. Miller , James D. Engle , Jerome T. Horner
CPC分类号： B29C47/60 , B29C47/0004 , B29C47/0845 , B29C47/0849 , B29C47/6018 , B29C47/6043 , B29C47/0009 , B29K2023/00
摘要： A method is disclosed for the extrusion of low-density linear polyolefin materials having high viscosities, wherein such materials are continuously fed to and through a rotary extruder having feeding, transition and metering sections which comprises employing, in the extruder screw forming such sections in cooperation with the cylindrical interior of the extruder housing, opened leading edges for the screw flights of said sections; and gall-resistant coated surfaces on the screw flights of said sections.
摘要翻译： 公开了一种用于挤出具有高粘度的低密度线性聚烯烃材料的方法，其中这种材料被连续地进料到并通过具有进料，过渡和计量部分的旋转挤出机，其包括在挤出机螺杆中形成这些部分合作 在挤出机壳体的圆柱形内部，用于所述部分的螺旋螺旋的开口的前缘; 并且在所述部分的螺旋螺旋上具有耐磨损的涂层表面。
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2.发明授权Method for reducing sharkskin melt fracture during extrusion of ethylene polymers 失效降低乙烯聚合物挤出过程中鲨鱼熔融断裂的方法
公开(公告)号：US4282177A
公开(公告)日：1981-08-04
申请号：US99061
申请日：1979-12-12
CPC分类号： B29C47/0004 , B29C47/0021 , B29C47/0026 , B29K2023/06 , B29K2995/0063 , B29K2995/0073
摘要： A method for reducing sharkskin melt fracture during extrusion of a molten narrow molecular weight distribution linear ethylene polymer which comprises extruding said polymer through a die having a die gap greater than about 50 mils and wherein at least a portion of one surface of the die lip and/or die land in contact with the molten polymer is at an angle of divergence or convergence relative to the axis of flow of the molten polymer through the die.
摘要翻译： 一种用于在熔融的窄分子量分布线性乙烯聚合物的挤出期间减少鲨鱼皮熔体断裂的方法，其包括通过具有大于约50密耳的模具间隙的模具挤出所述聚合物，并且其中模唇的一个表面的至少一部分和 /或与熔融聚合物接触的模具平台相对于通过模具的熔融聚合物的流动轴线发散或收敛的角度。
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3.发明授权
公开(公告)号：US4267146A
公开(公告)日：1981-05-12
申请号：US1932
申请日：1979-01-08
CPC分类号： B29C47/0004 , B29C47/0021 , B29C47/0026 , B29K2023/06 , B29K2995/0063 , B29K2995/0073
摘要： A method for reducing the melt fracture during extrusion of a molten narrow molecular weight distribution ethylene polymer which comprises extruding said polymer through a die having a die gap greater than about 50 mils and wherein at least a portion of one surface of the die lip and/or die land in contact with the molten polymer is at an angle of divergence or convergence relative to the axis of flow of the molten polymer through the die.
摘要翻译： 一种用于在熔融的窄分子量分布乙烯聚合物的挤出期间减少熔体断裂的方法，其包括通过具有大于约50密耳的模头间隙的模头挤出所述聚合物，并且其中模唇的一个表面的至少一部分和/ 或与熔融聚合物接触的死亡区域相对于通过模具的熔融聚合物的流动轴线发散或收敛的角度。
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4.发明授权Method for extruding molten narrow molecular weight distribution, linear, ethylene copolymers 失效挤出熔融窄分子量分布的方法，线性，乙烯共聚物
公开(公告)号：US4310484A
公开(公告)日：1982-01-12
申请号：US174542
申请日：1980-08-01
CPC分类号： B29C47/60 , B29C47/0004 , B29C47/6018 , B29C47/0021 , B29C47/0026 , B29K2023/00
摘要： A method for extruding granular low density narrow molecular weight distribution linear ethylene polymers which comprises passing said granular polymers into an extrusion apparatus including an extruder screw, said extruder screw having a feed section wherein said polymers are introduced and thence passed through a transition section and a metering section, wherein each lead in the feed section is substantially the same and each lead in the metering section is substantially the same and wherein each lead in the feed section is 5 to 50 percent greater than each lead in the metering section.
摘要翻译： 一种用于挤出颗粒状低密度窄分子量分布线性乙烯聚合物的方法，其包括使所述粒状聚合物进入包括挤出机螺杆的挤出设备中，所述挤出机螺杆具有进料部分，其中所述聚合物被引入，然后通过过渡部分和 计量部分，其中进给部分中的每个引线基本上相同，并且计量部分中的每个引线基本相同，并且其中馈送部分中的每个引线比计量部分中的每个引线大5至50％。
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公开(公告)号：US4447387A
公开(公告)日：1984-05-08
申请号：US430370
申请日：1982-09-30
CPC分类号： B29C47/8835 , B29C47/0026
摘要： A process for forming a blown film from a thermoplastic resin wherein a source of cooling air is induced to flow from the atmosphere in contact with another source of pressurized cooling air whereby increased production rates can be obtained.
摘要翻译： 一种由热塑性树脂形成吹塑薄膜的方法，其中冷却空气源被诱导与大气接触的另一个加压冷却空气源，从而可以获得提高的生产率。
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公开(公告)号：US5458474A
公开(公告)日：1995-10-17
申请号：US357532
申请日：1994-12-16
CPC分类号： B29B9/06 , B29B13/022 , B29B9/065 , B29C47/0011 , B29C47/38 , B29C47/786 , B29C47/822 , B29C47/825 , B29C2791/005 , B29C47/82
摘要： A continuous pelletizing system for pelletizing synthetic thermoplastic materials which includes:(1) a melter/mixer for at least partially melting and mixing synthetic thermoplastic material;(2) a gear pump operatively associated with the melter/mixer for increasing pressurization of the melted synthetic thermoplastic material;(3) an independently controlled dispersive mixer operatively associated with said gear pump or the melter/mixer which provides additional independent mixing of the melted synthetic thermoplastic material; and(4) a pelletizer operatively associated with the independently controlled dispersive mixer or the gear pump for forming pellets of synthetic material.
摘要翻译： 一种用于造粒合成热塑性材料的连续造粒系统，其包括：（1）用于至少部分熔融和混合合成热塑性材料的熔化器/混合器; （2）与熔化器/混合器可操作地相关联的齿轮泵，用于增加熔化的合成热塑性材料的加压; （3）与所述齿轮泵或熔化器/混合器可操作地相关联的独立控制的分散混合器，其提供熔化的合成热塑性材料的额外的独立混合; 和（4）与独立控制的分散混合器或用于形成合成材料颗粒的齿轮泵可操作地连接的造粒机。
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