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1. 发明授权

US4282177A Method for reducing sharkskin melt fracture during extrusion of ethylene polymers 失效
$Method for reducing sharkskin melt fracture during extrusion of ethylene polymers$
标题翻译：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
申请人： Stuart J. Kurtz , Theodore R. Blakeslee, III , Leonard S. Scarola
发明人： Stuart J. Kurtz , Theodore R. Blakeslee, III , Leonard S. Scarola
IPC分类号： B29C47/00 , B29D23/04
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。

2. 发明授权

US4321229A Method for extruding linear polyolefin materials having high viscosities 失效
标题翻译：挤出具有高粘度的线性聚烯烃材料的方法
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
IPC分类号： B29B7/00 , B29C47/00 , B29C47/60 , B29C47/64 , B29K23/00 , B29B1/06
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。

3. 发明授权

US4267146A Method for reducing melt fracture during extrusion of ethylene polymers 失效
$Method for reducing melt fracture during extrusion of ethylene polymers$
标题翻译：降低乙烯聚合物挤出过程中熔体断裂的方法
公开(公告)号：US4267146A
公开(公告)日：1981-05-12
申请号：US1932
申请日：1979-01-08
申请人： Stuart J. Kurtz , Theodore R. Blakeslee, III , Leonard S. Scarola
发明人： Stuart J. Kurtz , Theodore R. Blakeslee, III , Leonard S. Scarola
IPC分类号： B29B7/00 , B29C47/00 , B29C47/14 , B29C47/20 , B29D23/04
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。

4. 发明授权

US4425044A Mixer heads for polyolefin extruders 失效
标题翻译：聚烯烃挤出机的搅拌头
公开(公告)号：US4425044A
公开(公告)日：1984-01-10
申请号：US313626
申请日：1981-10-21
申请人： Stuart J. Kurtz , Leonard S. Scarola , John C. Miller
发明人： Stuart J. Kurtz , Leonard S. Scarola , John C. Miller
IPC分类号： B29B7/00 , B29C47/00 , B29C47/64 , B29B1/06
CPC分类号： B29C47/6043 , B29C47/0845 , B29C47/0849 , B29C47/0009
摘要： In a single screw extruder mixer head for mixing high viscosity linear polyolefins materials employing a plurality of alternate longitudinal mixing and wiping barriers, the improvement of providing longitudinal radially-stepped regions on the opened bevelled leading edge portions of the outer surface of the wiping barriers to act as hydrodynamic wedges to the passage of polyolefin material passing between the surfaces and the inner walls of the extruder barrel; and radially-stepped opened bevelled leading edge portions of the outer surfaces of the wiping barriers and the outer circumferential surfaces of full diameter of the mixer head supporting an outer coating of gall-resistant material.
摘要翻译：在用于混合使用多个交替的纵向混合和擦拭屏障的高粘度线性聚烯烃材料的单螺杆挤出机混合机头中，改进了在擦拭屏障的外表面的敞开的倾斜前缘部分上提供纵向径向台阶区域，作为通过在挤出机筒的表面和内壁之间通过的聚烯烃材料的流体动力楔; 和擦拭屏障的外表面的径向开放的斜边前缘部分和混合头的全直径的外圆周表面，其支撑耐磨材料的外涂层。

5. 发明授权

US4608221A Process for reducing draw resonance in polymeric film 失效
标题翻译：降低聚合物膜中共振的方法
公开(公告)号：US4608221A
公开(公告)日：1986-08-26
申请号：US687250
申请日：1984-12-28
申请人： Stuart J. Kurtz , Ernest H. Roberts , Peter J. Lucchesi
发明人： Stuart J. Kurtz , Ernest H. Roberts , Peter J. Lucchesi
IPC分类号： B29C47/88 , B29C55/00
CPC分类号： B29C55/00 , B29C47/0021 , B29C47/884 , B29C47/8845 , B29C47/886 , B29C47/888 , B29C47/8895
摘要： A process for reducing draw resonance of a polymeric molten film susceptible to draw resonance under conditions which would cause draw resonance by extruding the film from a die and rapidly cooling said film in a rapid cooling zone containing a pressure roll and chill roll by providing a tensioning device between said die and the nip of said pressure and chill roll, said tensioning device providing a substantially friction free surface with respect to said moving film.
摘要翻译：一种降低易于拉伸共振的聚合物熔融薄膜的拉伸共振的方法，该条件将通过从模具中挤出薄膜而引起拉伸共振，并在含有压力辊和冷却辊的快速冷却区域中快速冷却所述薄膜，所述模具和所述压力和冷却辊的辊隙之间的装置，所述张紧装置相对于所述移动膜提供基本上无摩擦的表面。

6. 发明授权

US4449395A Pheological measurement method and apparatus 失效
标题翻译：血液测定方法和装置
公开(公告)号：US4449395A
公开(公告)日：1984-05-22
申请号：US366723
申请日：1982-04-08
申请人： Stuart J. Kurtz , Terry A. De Rossett , Montgomery T. Shaw
发明人： Stuart J. Kurtz , Terry A. De Rossett , Montgomery T. Shaw
IPC分类号： G01N11/04
CPC分类号： G01N11/04
摘要： Method and apparatus for testing thermoplastic material comprising: passing as a stream a fractional, continuous, molten and flowable sample of the material to and successively through each of either a controllable pumping zone maintained at constant temperature and pressure or controllable pressure zone maintained at constant flow rate and temperature, and a die zone to form a continuous strand of the material; measuring the viscosity of the material in the pumping and die zones; providing a measurement of elasticity by obtaining a measurement of percentage of cross-section area swell in the strand in passage from the die zone over a constant length distance downstream of a point of strand marking to a point of strand marking to a point of mark sensing; and combining the viscosity measurement with the elasticity measurement to provide fuller rheological characterization data for the material.
摘要翻译：用于测试热塑性材料的方法和设备，包括：将物料的一部分，连续，熔融和可流动的样品通入到保持在恒定温度和压力下的可控抽吸区域或保持恒定流动的可控压力区域速率和温度，以及模具区域以形成材料的连续线; 测量泵送和模具区域中材料的粘度; 通过在线标记点下游到标记点标记感测点之间的恒定长度距离处获得在模具区域中的股线中横截面积膨胀的百分比的测量，从而提供弹性测量值 ; 并将粘度测量与弹性测量结合起来，为材料提供更全面的流变特性数据。

7. 发明授权

US4399173A Multilayer films comprising low pressure, low density polyethylene 失效
标题翻译：包含低压，低密度聚乙烯的多层膜
公开(公告)号：US4399173A
公开(公告)日：1983-08-16
申请号：US336592
申请日：1982-01-04
申请人： John Anthony , Stuart J. Kurtz
发明人： John Anthony , Stuart J. Kurtz
IPC分类号： B32B27/32 , B32B27/08
CPC分类号： B32B27/32 , Y10T428/1334 , Y10T428/31913
摘要： A multilayer plastic film free of melt fracture suitable for use in packaging and making bags wherein the film comprises a core layer of low melt index, low pressure, low density polyethylene, and two outer layers of a high melt index, low pressure, low density polyethylene. The process of making the multilayer film is also disclosed.
摘要翻译：一种无熔融破裂的多层塑料薄膜，适用于包装和制袋，其中薄膜包括低熔点，低压，低密度聚乙烯的芯层和高熔体指数，低压，低密度的两个外层聚乙烯还公开了制备多层膜的方法。

8. 发明授权

US4525257A Low level irradiated linear low density ethylene/alpha-olefin copolymers and film extruded therefrom 失效
标题翻译：低级辐射线性低密度乙烯/α-烯烃共聚物和由其挤出的薄膜
公开(公告)号：US4525257A
公开(公告)日：1985-06-25
申请号：US452937
申请日：1982-12-27
申请人： Stuart J. Kurtz , James E. Potts
发明人： Stuart J. Kurtz , James E. Potts
IPC分类号： B29C47/00 , C08J3/28 , C08J5/18 , C08L23/08 , B29F3/06 , C08F2/46
CPC分类号： C08J5/18 , B29C47/0004 , C08J3/28 , C08L23/0815 , B29C47/0021 , B29C47/0026 , B29C47/0057 , B29K2023/00 , B29K2105/24 , B29L2007/00 , B29L2023/00 , B29L2023/003 , C08J2323/08 , C08J2323/16 , C08L2205/02 , C08L2312/06 , Y10S522/912
摘要： Low level irradiation of narrow molecular weight distribution, linear, low density ethylene/alpha-olefin copolymer sufficient to introduce crosslinks into the copolymer but insufficient to provide for significant gelation produces improved copolymer rheology providing superior film fabrication.
摘要翻译：窄分子量分布的低水平照射，线性，低密度乙烯/α-烯烃共聚物足以将交联引入共聚物但不足以提供显着的凝胶化产生改善的共聚物流变学，提供优异的膜制备。

9. 发明授权

US4360494A Process for reducing melt fracture during extrusion of a molten narrow molecular weight distribution, linear, ethylene copolymer 失效
$Process for reducing melt fracture during extrusion of a molten narrow molecular weight distribution, linear, ethylene copolymer$
标题翻译：用于在熔融的窄分子量分布挤出过程中减少熔体断裂的方法，线型乙烯共聚物
公开(公告)号：US4360494A
公开(公告)日：1982-11-23
申请号：US249914
申请日：1981-04-01
申请人： Stuart J. Kurtz
发明人： Stuart J. Kurtz
IPC分类号： B29C49/00 , B29B7/00 , B29B11/10 , B29C47/00 , B29C47/14 , B29C47/20 , B29C49/04 , B29C65/00 , B29D23/04
CPC分类号： B29C47/0026 , B29C47/0004 , B29C47/14 , B29C47/20 , B29K2023/00
摘要： A process for reducing melt fracture formed during extrusion of a molten narrow molecular weight distribution, linear, ethylene polymer, which comprises extruding said polymer through a die having a discharge outlet defining an exit die gap formed by opposing die lip surfaces and wherein one surface of the die lip and/or die land in contact with the molten polymer extends beyond the opposing surface of the die lip and/or die land in the direction of the axis of flow of the molten polymer through the die exit and wherein said extended die lip has a groove extending around said extended die lip, said groove being disposed opposite the leading edge of the opposing die lip surface whereby melt fracture is reduced on both surfaces of the polymer leaving said die exit.
摘要翻译：一种用于减少挤出熔融的窄分子量分布（线性乙烯聚合物）期间形成的熔体断裂的方法，其包括通过具有排出口的模具挤出所述聚合物，所述排出口限定由相对的模唇表面形成的出口模具间隙，与熔融聚合物接触的模唇和/或模具平台沿着熔融聚合物流过模头出口的流动方向延伸超过模唇和/或模具座的相对表面，并且其中所述延伸模唇具有围绕所述延伸的模唇缘延伸的凹槽，所述凹槽与相对的模唇表面的前缘相对设置，从而在离开模具出口的聚合物的两个表面上降低了熔体断裂。

10. 发明授权

US4348349A Method for reducing melt fracture during extrusion of a molten narrow molecular weight distribution, linear, ethylene copolymer 失效
$Method for reducing melt fracture during extrusion of a molten narrow molecular weight distribution, linear, ethylene copolymer$
标题翻译：用于在熔融的窄分子量分布挤出过程中减少熔体断裂的方法，线型乙烯共聚物
公开(公告)号：US4348349A
公开(公告)日：1982-09-07
申请号：US192701
申请日：1980-10-01
申请人： Stuart J. Kurtz
发明人： Stuart J. Kurtz
IPC分类号： B29B7/00 , B29C47/00 , B29C47/06 , B29C47/14 , B29C47/20 , B32B27/32 , B29D23/04
CPC分类号： B29C47/26 , B29C47/0004 , B29C47/0023 , B29C47/065 , B29C47/14 , B29C47/20 , B32B27/322 , B29C47/0021 , B29C47/0026 , B29K2023/06 , B29K2995/0063 , B29K2995/0073
摘要： A process for reducing melt fracture formed during extrusion of a molten narrow molecular weight distribution, linear, ethylene polymer, which comprises extruding said polymer through a die having a discharge outlet defining an exit die gap formed by opposing die lip surfaces and wherein one surface of the die lip and/or die land in contact with the molten polymer extends beyond the opposing surface of the die lip and/or die land in the direction of the axis of flow of the molten polymer through the die exit whereby melt fracture is reduced on the surface of the polymer leaving the extended die lip surface.
摘要翻译：一种用于减少挤出熔融的窄分子量分布（线性乙烯聚合物）期间形成的熔体断裂的方法，其包括通过具有排出口的模具挤出所述聚合物，所述排出口限定由相对的模唇表面形成的出口模具间隙，与熔融聚合物接触的模唇和/或模具平台在熔融聚合物的流动轴线的方向上延伸超过模唇和/或模具座的相对表面，从而熔体断裂在聚合物的表面离开延伸的模唇表面。

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