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    SINGLE-SCREW EXTRUDER WITH HOLLOW ROTOR MEMBER
    1.
    发明申请
    SINGLE-SCREW EXTRUDER WITH HOLLOW ROTOR MEMBER 审中-公开

    公开(公告)号：US20190184621A1

    公开(公告)日：2019-06-20

    申请号：US16328022

    申请日：2017-08-25

    申请人： TEKNOLOGIAN TUTKIMUSKESKUS VTT OY

    发明人： Hannu MINKKINEN ,  Antti OJALA ,  Kirsi IMMONEN

    IPC分类号： B29C48/395 ,  B29C48/56

    CPC分类号： B29C48/397 ,  B29B7/425 ,  B29B7/429 ,  B29B7/90 ,  B29C48/51 ,  B29C48/56 ,  B29C48/59 ,  B29C48/625 ,  B29C48/681 ,  B29C48/688

    摘要： A single-screw extruder (100), and a method. The extruder (100) comprises—a cylindrical rotor member (1) having diameter (D) and length (L) and comprising a feeding zone (14), —the rotor member (1) arranged in a barrel (2), —the cylindrical surface of the rotor member (1) carrying cavity/cavities and/or projection(s) (5) arranged in helically extending rows, —the helically extending row(s) of the rotor member (1) having a pitch (P) and depth (d) in the feeding zone (14) of the rotor member, and the extruder (100) further comprising a drive system (4) for the rotation of the rotor member (1) in the barrel (2). The relation of the depth (d) to the diameter (D) of the rotor member, i.e. d:D, is not more than 1:20, and the relation of the pitch (P) of the rotor member to the diameter (D) of the rotor member, i.e. P:D, is not more than 1:4.

    PROCESS FOR THE PRODUCTION OF A COATED PLASTICISING SCREW
    2.
    发明申请
    PROCESS FOR THE PRODUCTION OF A COATED PLASTICISING SCREW 审中-公开
    生产涂层塑料螺丝的方法

    公开(公告)号：US20100266760A1

    公开(公告)日：2010-10-21

    申请号：US12424879

    申请日：2009-04-16

    申请人： Hans Berger-Steiner ,  Johann Mittmannsgruber ,  Gottfried Pockl

    发明人： Hans Berger-Steiner ,  Johann Mittmannsgruber ,  Gottfried Pockl

    IPC分类号： B05D3/02 ,  B05D1/12

    CPC分类号： C23C4/04 ,  B29C48/03 ,  B29C48/395 ,  B29C48/505 ,  B29C48/509 ,  B29C48/59 ,  B29C2948/92704 ,  B29C2948/92885 ,  B29C2948/9298 ,  C23C4/06

    摘要： A process for the production of a coated plasticising screw for the injection molding or extrusion of plastic material, wherein at least the wearing surfaces of the plasticising screw are coated with a metal-based alloy, comprising the following steps:coating at least said wearing surfaces with said alloy,heating the coated plasticising screw for fusing said alloy to said plasticising screw, andcooling off said coated plasticising screw,wherein in the fusing operation all the coated wearing surfaces are simultaneously exposed to a temperature which is above the melting temperature of said alloy.

    摘要翻译： 一种用于生产用于塑料材料的注射成型或挤出的涂覆塑化螺杆的方法，其中至少塑化螺杆的磨损表面涂覆有金属基合金，其包括以下步骤：至少涂覆所述磨损表面 利用所述合金，加热涂覆的塑化螺杆，将所述合金熔合到所述塑化螺杆上，并冷却所述涂覆的塑化螺杆，其中在熔化操作中，所有涂覆的磨损表面同时暴露于高于所述 合金。

    METHOD OF COOLING MATERIAL USING AN EXTRUDER SCREW CONFIGURED FOR IMPROVED HEAT TRANSFER
    3.
    发明申请
    METHOD OF COOLING MATERIAL USING AN EXTRUDER SCREW CONFIGURED FOR IMPROVED HEAT TRANSFER 审中-公开
    使用配置为改进热交换器的挤出螺杆冷却材料的方法

    公开(公告)号：US20080315455A1

    公开(公告)日：2008-12-25

    申请号：US12177940

    申请日：2008-07-23

    申请人： Chris J. Rauwendaal

    发明人： Chris J. Rauwendaal

    IPC分类号： B01F15/06 ,  B29C47/38

    CPC分类号： B29C48/84 ,  B29C48/03 ,  B29C48/505 ,  B29C48/59 ,  B29C48/82 ,  B29C48/834 ,  B29K2025/00 ,  B29K2105/04

    摘要： A method of cooling material in a screw extruder having a barrel including providing at least one extruder screw having a central shaft. The at least one extruder screw includes at least one screw flight including at least one interruption in the screw flight to form at least one discontinuity by which a portion of the screw flight is circumferentially displaced from the remainder of the screw flight. Material is turned from near the central shaft outwards toward the inner surface of the screw extruder barrel through the at least one discontinuity.

    摘要翻译： 一种在具有桶的螺杆挤出机中冷却材料的方法，包括提供至少一个具有中心轴的挤出机螺杆。 至少一个挤出机螺杆包括至少一个螺旋飞行，其包括在螺旋飞行中的至少一个中断，以形成至少一个不连续部分，螺旋飞行的一部分与螺旋飞行的其余部分沿圆周方向偏移。 材料通过至少一个不连续部分从中心轴的附近向外转向螺杆挤出机筒的内表面。

    Co-rotating dual speed multi-screw extruder and processing method thereof
    4.
    发明授权
    Co-rotating dual speed multi-screw extruder and processing method thereof 有权

    公开(公告)号：US11648721B2

    公开(公告)日：2023-05-16

    申请号：US16530860

    申请日：2019-08-02

    申请人： WUYI UNIVERSITY

    发明人： Baiping Xu ,  Huiwen Yu ,  Yaoxue Du

    IPC分类号： B29C48/405 ,  B29C48/425 ,  B29C48/59 ,  B29C48/25

    CPC分类号： B29C48/405 ,  B29C48/2517 ,  B29C48/425 ,  B29C48/59

    摘要： The disclosure discloses a co-rotating dual speed multi-screw extruder and a processing method thereof, the co-rotating dual speed multi-screw extruder enables a first screw and a second screw with the same outer diameter to co-rotate at different speed in a barrel, and the two screws wipe with each other, to achieve self-cleaning in processing; and circular arcs meshed with each other are respectively arranged between root diameters and top diameters of the two screws to form a first step structure and a second step structure, thus breaking an axial symmetry of a cross-sectional contour of the screws, and moreover, the first step structure and the second step structure are periodically meshed in a meshing zone in a staggered manner, so that a flow channel in the meshing zone is changed in a topological way, a strong elongation action and a strong disturbance action are effectively introduced in the meshing zone.

    REDUCED WEAR EXTRUDER SCREW
    7.
    发明申请
    REDUCED WEAR EXTRUDER SCREW 审中-公开
    减少磨损挤出机螺丝

    公开(公告)号：US20150273753A1

    公开(公告)日：2015-10-01

    申请号：US14601528

    申请日：2015-01-21

    申请人： Barr, Inc

    发明人： Robert A. Barr ,  Jeffrey A. Myers

    IPC分类号： B29C47/60 ,  B29B7/42

    CPC分类号： B29C48/59 ,  B29B7/42 ,  B29B7/429 ,  B29C48/52 ,  B29C48/64 ,  Y02P70/263

    摘要： An extruder screw comprises a core extending longitudinally from a feed end to a discharge end thereof. The core has a helical primary thread formed thereon. At least one discontinuity is fog lied in the primary thread to divide the primary thread into a plurality of primary thread portions spaced apart from each other in a longitudinal direction of the core. The at least one discontinuity formed in the primary thread may be formed adjacent a downstream end of a compression section of the screw or spanning a transition from the compression section to a section of the screw disposed downstream of the compression section. The discontinuity in the primary thread militates against the problem of solids wedging by allowing any solid materials being processed by the extruder screw to expand and break apart prior to the core reaching a maximum outer diameter.

    摘要翻译： 挤出机螺杆包括从进料端纵向延伸到其排出端的芯。 芯具有形成在其上的螺旋形主线。 在主螺纹中至少有一个不连续性是雾，以将主线分成在芯的纵向方向上彼此间隔开的多个主螺纹部分。 形成在主螺纹中的至少一个不连续部可以形成在螺杆的压缩部的下游端附近，或者形成从压缩部向设置在压缩部的下游的螺杆的过渡部。 主螺纹的不连续性通过允许由挤出机螺杆加工的任何固体材料在芯达到最大外径之前膨胀和分离，从而抵抗固体楔入的问题。

    EXTRUDER AND METHOD OF EXTRUDER OPERATION
    8.
    发明申请
    EXTRUDER AND METHOD OF EXTRUDER OPERATION 审中-公开
    挤出机和挤出机操作方法

    公开(公告)号：US20110182133A1

    公开(公告)日：2011-07-28

    申请号：US13121670

    申请日：2008-12-24

    申请人： Babu Padmanabhan

    发明人： Babu Padmanabhan

    IPC分类号： B29B7/60 ,  B29B7/46

    CPC分类号： B29B7/484 ,  B29C48/03 ,  B29C48/2564 ,  B29C48/297 ,  B29C48/395 ,  B29C48/40 ,  B29C48/402 ,  B29C48/501 ,  B29C48/54 ,  B29C48/59

    摘要： A method of extruder operation is described; the extruder comprising a housing having at least two cylindrical housing bores, each housing bore having an axis disposed parallel to the other axis and the first and second axes separated by a distance “a”; at least a first screw shaft and a second screw shaft being disposed in the first and second housing bores; the first and second screw shaft with a first and second screw respectively; the first and second screw each having an extruder diameter D and a screw root diameter d; the first and second screw shaft each having a volumetric ratio of at least 1.4 wherein the volumetric ratio is defined by the extruder diameter D divided by the screw root diameter d; at least two inlet hoppers in the vicinity of the housing bores and opening into said housing bore with at least one of the inlet hopper having a side inlet into the housing bore; the method comprising: feeding material to be processed through the at least two inlet hoppers into the housing bores; conveying the material through the extruder length from the inlet hoppers to the extruder outlet; driving each of said first and second screw shafts at a speed of at least 1000 rpm and at a torque density of at least 8.5 Nm/cm3; the torque density being the shaft torque at each first and second shaft divided by the third power of the distance ‘a’ of the first and second axes.

    摘要翻译： 描述挤出机操作的方法; 所述挤出机包括具有至少两个圆柱形壳体孔的壳体，每个壳体孔具有平行于另一个轴线设置的轴线，并且所述第一和第二轴线间隔开距离“a”; 至少第一螺杆轴和第二螺纹轴设置在第一和第二壳体孔中; 第一和第二螺杆轴分别具有第一和第二螺杆; 第一和第二螺杆各自具有挤出机直径D和螺杆根直径d; 第一和第二螺杆轴的体积比至少为1.4，其中体积比由挤出机直径D除以螺杆根直径d定义; 至少两个入口料斗在所述壳体孔附近并且进入所述壳体孔中，所述入口料斗中的至少一个具有到所述壳体孔中的侧入口; 所述方法包括：将待处理材料通过所述至少两个入口料斗进入所述壳体孔中; 将材料通过挤出机长度从入口料斗输送到挤出机出口; 以至少1000rpm的转速和至少8.5Nm 3 / cm 3的扭矩密度驱动所述第一和第二螺杆轴的每一个; 扭矩密度是每个第一和第二轴处的轴转矩除以第一和第二轴的距离'a'的第三功率。

    Kneading element and related articles
    9.
    发明申请
    Kneading element and related articles 审中-公开

    公开(公告)号：US20070147169A1

    公开(公告)日：2007-06-28

    申请号：US11712081

    申请日：2007-02-28

    申请人： Joseph Mattingly

    发明人： Joseph Mattingly

    IPC分类号： B29B7/48

    CPC分类号： B01F7/0065 ,  B01F7/00641 ,  B01F7/083 ,  B29B7/481 ,  B29C48/03 ,  B29C48/2564 ,  B29C48/505 ,  B29C48/57 ,  B29C48/575 ,  B29C48/59 ,  B30B11/246

    摘要： A modified kneading element for a screw extruder, peripherally congruent, aligned, and contiguous with a cross-sectional profile of a modified conveying element, includes a central portion defining a root diameter having a shaft receiving bore defined therein; and at least one lobe extending radially from the central portion, each lobe having an outer periphery ridge and first and second lateral sidewalls, wherein one of the lateral sidewalls of each lobe is concave between the outer periphery ridge and the central portion. Kneading blocks including such kneading elements and screw extruders including such kneading blocks are also provided.