公开(公告)号：US5037285A

公开(公告)日：1991-08-06

申请号：US563169

申请日：1990-08-03

申请人： Frederick G. Kudert ,  Maurice G. Latreille ,  Robert J. McHenry ,  George F. Nahill ,  Henry Pfutzenreuter, III ,  William A. Tennant ,  Thomas T. Tung ,  John Vella, Jr.

发明人： Frederick G. Kudert ,  Maurice G. Latreille ,  Robert J. McHenry ,  George F. Nahill ,  Henry Pfutzenreuter, III ,  William A. Tennant ,  Thomas T. Tung ,  John Vella, Jr.

IPC分类号： B29C45/16 ,  B65D1/28

CPC分类号： B29C47/061 ,  B29C45/1607 ,  B29C45/1643 ,  B29C47/0023 ,  B65D1/28 ,  B29B2911/14053 ,  B29B2911/14066 ,  B29B2911/1408 ,  B29B2911/14093 ,  B29B2911/1412 ,  B29B2911/14126 ,  B29C2045/161 ,  B29C2045/1612 ,  B29K2105/26 ,  B29L2031/716

摘要： Multi-co-injection nozzle injection molding and injection blow-molding apparatus for injection molding and injection blow-molding a multi-layer plastics article, parison or container, including a plurality of co-injection nozzles, means associated with the nozzles to channel each material stream which is to form a layer of the article separately to each nozzle, and means for moving the materials streams along their respective channels to their respective nozzles for injection into associated injection mold cavities. The channels preferably provide substantially the same material flow for streams of the same material channeled to the nozzles. Preferably, the nozzles have an axial central channel and a plurality of flow stream passageways with orifices in communication with the central channel, and valve means cooperatively associated with and operative within each co-injection nozzle for there preventing and allowing the flow of respective materials streams from the orifices into the central channel.

摘要翻译： 用于注塑和注射吹塑多层塑料制品，型坯或容器的多共注射喷嘴注射成型和注塑吹塑装置，包括多个共注射喷嘴，与喷嘴相关联的装置，用于将每个 用于将物料层分开地形成到每个喷嘴的材料流，以及用于将材料流沿其相应通道移动到其各自的喷嘴以注入相关联的注射模具腔的装置。 通道优选为被引导到喷嘴的相同材料的流提供基本相同的材料流。 优选地，喷嘴具有轴向中心通道和具有与中心通道连通的孔的多个流动流通道，并且阀装置与每个共注射喷嘴协作地关联并且在每个共注射喷嘴内操作，用于防止并允许相应材料流的流动 从孔口进入中央通道。

公开(公告)号：US4946365A

公开(公告)日：1990-08-07

申请号：US397348

申请日：1989-08-22

申请人： Frederick G. Kudert ,  Maurice G. Latreille ,  Robert J. McHenry ,  George F. Nahill ,  Henry Pfutzenreuter, III ,  William A. Tennant ,  Thomas T. Tung ,  John Vella, Jr.

发明人： Frederick G. Kudert ,  Maurice G. Latreille ,  Robert J. McHenry ,  George F. Nahill ,  Henry Pfutzenreuter, III ,  William A. Tennant ,  Thomas T. Tung ,  John Vella, Jr.

IPC分类号： B29C45/16 ,  B65D1/28

CPC分类号： B29C47/061 ,  B29C45/1607 ,  B29C45/1643 ,  B29C47/0019 ,  B29C47/003 ,  B65D1/28 ,  B29B2911/14053 ,  B29B2911/14066 ,  B29B2911/1408 ,  B29B2911/14093 ,  B29B2911/1412 ,  B29B2911/14126 ,  B29C2045/161 ,  B29C2045/1612 ,  B29K2105/26 ,  B29L2031/716

摘要： Multi-co-injection nozzle injection molding apparatus for an injection molding machine for injection molding a multi-layer plastics article or container, comprising a plurality of co-injection nozzles, means associated with the nozzles to channel each material stream which is to form a layer of the article separately to each nozzle, means for moving the materials streams along their respective channels to their respective nozzles and means for combining in each nozzle the streams moved thereto, to form combined streams in the nozzles for injection into associated injection mold cavities. Each of the channels preferably provide substantially the same material flow stream travel path for each material stream of the same material channeled to each nozzle. Each co-injection nozzle has an axial central channel and a plurality of flow stream passageways with orifices in communication with the central channel. Preferably, valve means are cooperatively associated with and operative within each co-injection nozzle for there preventing and allowing the flow of respective materials streams from the passageway orifices into the central channel.

摘要翻译： 用于注射成型多层塑料制品或容器的注射成型机的多共注射喷嘴注射成型装置，包括多个共注射喷嘴，与喷嘴相关联的装置，用于引导每个材料流形成 该物品分别与每个喷嘴相连，用于将材料流沿其各自的通道移动到其各自的喷嘴的装置，以及用于在每个喷嘴中组合移动到其上的流的装置，以在喷嘴中形成用于注射到相关联的注射模腔中的组合流。 每个通道优选为通向每个喷嘴的相同材料的每个材料流提供基本相同的材料流动行进路径。 每个共注射喷嘴具有轴向中心通道和具有与中心通道连通的孔的多个流动流通道。 优选地，阀装置与每个共注射喷嘴协作地关联并且在每个共注射喷嘴内操作，用于防止和允许相应的材料流从通道孔流入中心通道。

公开(公告)号：US4925100A

公开(公告)日：1990-05-15

申请号：US394295

申请日：1989-08-16

申请人： Frederick G. Kudert ,  Maurice G. Latreille ,  Robert J. McHenry ,  George F. Nahill ,  Henry Pfutzenreuter, III ,  William A. Tennant ,  Thomas T. Tung ,  John Vella, Jr.

发明人： Frederick G. Kudert ,  Maurice G. Latreille ,  Robert J. McHenry ,  George F. Nahill ,  Henry Pfutzenreuter, III ,  William A. Tennant ,  Thomas T. Tung ,  John Vella, Jr.

IPC分类号： B29C45/16 ,  B65D1/28

CPC分类号： B29C47/061 ,  B29C45/1607 ,  B29C45/1643 ,  B29C47/0019 ,  B29C47/003 ,  B65D1/28 ,  B29B2911/14053 ,  B29B2911/14066 ,  B29B2911/1408 ,  B29B2911/14093 ,  B29B2911/1412 ,  B29B2911/14126 ,  B29C2045/161 ,  B29C2045/1612 ,  B29K2105/26 ,  B29L2031/716

摘要： Valve means for use in a co-injection nozzle of a multi-polymer injection molding or blow-molding machine wherein the nozzle has an axial or cylindrical central channel, comprised of an elongated sleeve having an axial central passageway and a port in its side wall and axially-reciprocable within the nozzle central channel, and, either a solid pin within and fixed relative to the sleeve, or, more preferably, an elongated pin axially-reciprocable within the sleeve central passageway, the sleeves and pins each mounted in close tolerance slip fits to prevent any significant accumulation or passage of polymer melt material.

摘要翻译： 用于多聚合物注射成型或吹塑机的共注射喷嘴的阀装置，其中喷嘴具有轴向或圆柱形中心通道，其包括具有轴向中心通道和其侧壁中的端口的细长套筒 并且在喷嘴中心通道内可轴向往复运动，以及相对于套筒固定的实心销，或者更优选地，在套筒中心通道内可轴向往复运动的细长销，每个以紧密公差安装的套筒和销 滑动配合以防止聚合物熔体材料的任何显着的积聚或通过。

公开(公告)号：US4745013A

公开(公告)日：1988-05-17

申请号：US909404

申请日：1986-09-19

申请人： Frederick G. Kudert ,  Maurice G. Latreille ,  Robert J. McHenry ,  George F. Nahill ,  Henry Pfutzenreuter, III ,  William A. Tennant ,  Thomas T. Tung ,  John Vella, Jr.

发明人： Frederick G. Kudert ,  Maurice G. Latreille ,  Robert J. McHenry ,  George F. Nahill ,  Henry Pfutzenreuter, III ,  William A. Tennant ,  Thomas T. Tung ,  John Vella, Jr.

IPC分类号： B29C45/16 ,  B29C45/20 ,  B29C49/00 ,  B29C49/22 ,  B65D1/28 ,  B27N5/02 ,  B29C45/00 ,  B65D23/00

CPC分类号： B29C47/061 ,  B29C45/16 ,  B29C45/1607 ,  B29C45/1643 ,  B29C45/20 ,  B29C49/0073 ,  B29C49/221 ,  B65D1/28 ,  B29B2911/14053 ,  B29B2911/14066 ,  B29B2911/1408 ,  B29B2911/14093 ,  B29B2911/1412 ,  B29B2911/14326 ,  B29B2911/14331 ,  B29B2911/14333 ,  B29B2911/14335 ,  B29B2911/14337 ,  B29B2911/14366 ,  B29B2911/14413 ,  B29B2911/14426 ,  B29B2911/14493 ,  B29B2911/14646 ,  B29B2911/14713 ,  B29B2911/1498 ,  B29C2045/161 ,  B29C2045/1612 ,  B29C47/0009 ,  B29K2105/26 ,  B29L2031/716 ,  Y10T428/1383

摘要： Injection molded and injection blow molded multi-layer substantially rigid plastic articles are provided, which, in preferred embodiments, include:at least five layer plastic articles having side and bottom walls comprised of an outside surface layer, an inside surface layer, an internal layer, and first and second intermediate layers, one on either side of the internal layer, and having the terminal end of the internal layer encapsulated by intermediate layer material, whether it be solely or primarily by first or by both first and second intermediate layer material. At least three-layer injection molded plastic containers are provided;multi-layer injection molded plastic containers each of whose side wall is comprised of at least three layers, wherein-- the ratio of the internal layer thickness in the bottom wall relative to the total bottom wall thickness is on the average greater than the ratio of the internal layer thickness in the side wall relative to the total side wall thickness,-- the bottom wall total thickness is less than the side wall total thickness and a portion of the thickness of the internal layer in the bottom wall is at least equal to the average thickness of the internal layer in the side wall,-- the bottom wall total thickness is less than the total thickness of the side wall, and, in a central portion of the bottom wall, the internal layer thickness is greater than the average thickness of the internal layer in the side wall, or-- the average bottom wall total thickness is less than the average side wall total thickness, and at least a portion of the internal layer is thicker in the bottom wall than the average thickness of the internal layer in the side wall.

摘要翻译： 提供了注射成型和注射吹塑多层基本上刚性的塑料制品，其在优选实施方案中包括：至少五层塑料制品，其具有由外表面层，内表面层，内层 以及第一和第二中间层，一个在内层的任一侧上，并且其内层的末端被中间层材料包封，无论其是单独还是主要地通过第一中间层材料或第一和第二中间层材料。 至少提供三层注塑塑料容器; 多层注塑塑料容器，其各自的侧壁由至少三层组成，其中，底壁中的内层厚度相对于总底壁厚度的比率平均大于 在侧壁中的相对于总侧壁厚度的内层厚度， - 底壁总厚度小于侧壁总厚度，并且底壁中的内层厚度的一部分至少等于平均值 侧壁的内层的厚度，底壁的总厚度小于侧壁的总厚度，在底壁的中央部分，内层的厚度大于 或者 - 平均底壁总厚度小于平均侧壁总厚度，并且内层的至少一部分在底壁tha中较厚 n是侧壁内层的平均厚度。

公开(公告)号：US4511528A

公开(公告)日：1985-04-16

申请号：US484441

申请日：1983-04-13

申请人： Frederick G. Kudert ,  Maurice G. Latreille ,  William A. Tennant

发明人： Frederick G. Kudert ,  Maurice G. Latreille ,  William A. Tennant

IPC分类号： B29C45/16 ,  B29C45/20 ,  B29C49/00 ,  B29C49/06 ,  B29C49/22 ,  B29K101/00 ,  B29L22/00 ,  B65D1/28 ,  B29C5/00 ,  B29D9/00 ,  B29F1/02 ,  B29F1/10

CPC分类号： B29C47/061 ,  B29C45/16 ,  B29C45/20 ,  B29C49/0073 ,  B29C49/22 ,  B65D1/28 ,  B29B2911/14053 ,  B29B2911/14066 ,  B29B2911/1408 ,  B29B2911/14093 ,  B29B2911/1412 ,  B29B2911/14326 ,  B29B2911/14331 ,  B29B2911/14332 ,  B29B2911/14333 ,  B29B2911/14335 ,  B29B2911/14366 ,  B29B2911/14426 ,  B29B2911/1446 ,  B29B2911/14493 ,  B29B2911/14646 ,  B29B2911/1498 ,  B29B2911/14986 ,  B29C2045/161 ,  B29C2045/1612 ,  B29C47/0009

摘要： Polymer melt material flow stream splitter devices, including runner extensions, T-splitters and Y-splitters are provided, for splitting an incoming flow stream channel for each melt material, into first and second branched flow channels of equal length which communicate with sets of first and second branched exit ports, each set in an axially aligned, spaced pattern in different peripheral surface portions of the respective splitter devices.

摘要翻译： 提供聚合物熔体流动分流器装置，包括流道延伸部，T分流器和Y分流器，用于将每个熔体材料的进入流动流道分流成等同长度的第一和第二分支流动通道，其与第一 和第二分支出口，每个分别设置在相应的分离器装置的不同外围表面部分中的轴向对齐的间隔图案中。

公开(公告)号：US5523045A

公开(公告)日：1996-06-04

申请号：US341700

申请日：1994-11-18

申请人： Frederick G. Kudert ,  Maurice G. Latreille ,  Robert J. McHenry ,  George F. Nahill ,  Henry Pfutzenreuter, III ,  William Tennant ,  Thomas T. Tung ,  John Vella, Jr.

发明人： Frederick G. Kudert ,  Maurice G. Latreille ,  Robert J. McHenry ,  George F. Nahill ,  Henry Pfutzenreuter, III ,  William Tennant ,  Thomas T. Tung ,  John Vella, Jr.

IPC分类号： B29C45/16 ,  B29C49/22 ,  B65D1/28 ,  B65D81/26

CPC分类号： B29C47/061 ,  B29C45/16 ,  B29C45/1607 ,  B29C45/1643 ,  B29C47/0023 ,  B29C49/22 ,  B65D1/28 ,  B65D81/266 ,  B29B2911/14053 ,  B29B2911/14066 ,  B29B2911/1408 ,  B29B2911/14093 ,  B29B2911/1412 ,  B29B2911/14126 ,  B29C2045/161 ,  B29C2045/1612 ,  B29C2045/2689 ,  B29C2045/2893 ,  B29K2105/26 ,  B29L2031/716 ,  Y10T428/1321 ,  Y10T428/1352 ,  Y10T428/1383 ,  Y10T428/139

摘要： Methods for injection molding and injection blow-molding multi-layer plastic articles, including containers and parisons for forming containers, which comprise providing a plurality of co-injection nozzle means for injecting plastic materials into associated injection cavities to form each article, providing streams of polymeric materials to form corresponding layers of the articles, moving each stream separately to plural nozzle means, separately receiving the streams in the plural nozzle means, and injecting the streams to form the multi-layer plastic articles. Preferably, each stream of material which is to form a corresponding layer of the articles is provided with substantially the same polymer flow, preferably from where each stream is split and moved to each nozzle means. Valve means can be employed in each nozzle means for positively controlling preferably substantially simultaneously the flow and nonflow of respective materials into the central channel of the nozzle means. Preferably, injection is effected to provide uniform onset flow of one or more internal layer materials into the central channel, cause foldover of one or more of the internal layers and provide in the parison or container sidewall one or more internal layers whose leading edge is substantially unbiased relative to the terminal end of the sidewall.

摘要翻译： 注射成型和注射吹塑多层塑料制品的方法，包括用于形成容器的容器和型坯，其包括提供多个共注射喷嘴装置，用于将塑料材料注入相关联的注射腔中以形成每个制品，提供流 聚合物材料以形成制品的相应层，将每个流分别移动到多个喷嘴装置，分别容纳多个喷嘴装置中的流，并注射流以形成多层塑料制品。 优选地，用于形成制品的相应层的每种材料流具有基本上相同的聚合物流，优选地从每个流分裂并移动到每个喷嘴装置。 可以在每个喷嘴装置中使用阀装置，用于优选地基本上同时地将各种材料的流动和不流入到喷嘴装置的中心通道中。 优选地，进行注入以提供一个或多个内部层材料均匀地起始流入中心通道，导致一个或多个内部层的折叠，并在型坯或容器侧壁中提供一个或多个内部层，其前缘基本上 相对于侧壁的末端无偏压。

公开(公告)号：US4892699A

公开(公告)日：1990-01-09

申请号：US909288

申请日：1986-09-19

申请人： Frederick G. Kudert ,  Maurice G. Latreille ,  Robert J. McHenry ,  George F. Nahill ,  Henry Pfutzenreuter, III ,  William A. Tennant ,  Thomas T. Tung ,  John Vella, Jr.

发明人： Frederick G. Kudert ,  Maurice G. Latreille ,  Robert J. McHenry ,  George F. Nahill ,  Henry Pfutzenreuter, III ,  William A. Tennant ,  Thomas T. Tung ,  John Vella, Jr.

IPC分类号： B29C45/16 ,  B65D1/28

CPC分类号： B29C47/061 ,  B29C45/1607 ,  B29C45/1643 ,  B65D1/28 ,  B29B2911/14053 ,  B29B2911/14066 ,  B29B2911/1408 ,  B29B2911/14093 ,  B29B2911/1412 ,  B29B2911/14126 ,  B29C2045/161 ,  B29C2045/1612 ,  B29C47/0009 ,  B29K2105/26 ,  B29L2031/716

摘要： A method of forming multi-layer plastic articles by using a multi-cavity injection molding machine. A combined material stream is injected from a plurality of co-injection nozzles into associated injection cavities. Streams of polymeric materials which form the layers of the articles are directed separately into each of the nozzles and in each of the nozzles a combines stream is formed which is injected into the cavities. The individual flow of each of the material streams in the nozzle can be controlled in the nozzle.

摘要翻译： 一种通过使用多腔注射成型机形成多层塑料制品的方法。 将组合的材料流从多个共注射喷嘴注入相关的注射腔。 形成制品层的聚合物材料流分别被引导到每个喷嘴中，并且在每个喷嘴中形成组合物流，其将注射到空腔中。 可以在喷嘴中控制喷嘴中每个材料流的单独流动。

公开(公告)号：US4712990A

公开(公告)日：1987-12-15

申请号：US484707

申请日：1983-04-13

申请人： Frederick G. Kudert ,  Maurice G. Latreille ,  Robert J. McHenry ,  George F. Nahill ,  Henry Pfutzenreuter, III ,  William A. Tennant ,  Thomas T. Tung ,  John Vella, Jr.

发明人： Frederick G. Kudert ,  Maurice G. Latreille ,  Robert J. McHenry ,  George F. Nahill ,  Henry Pfutzenreuter, III ,  William A. Tennant ,  Thomas T. Tung ,  John Vella, Jr.

IPC分类号： B29C45/16 ,  B29C49/22 ,  B65D1/28 ,  B29C45/22

CPC分类号： B29C47/061 ,  B29C45/1607 ,  B29C49/22 ,  B65D1/28 ,  B29B2911/14053 ,  B29B2911/14066 ,  B29B2911/1408 ,  B29B2911/14093 ,  B29B2911/1412 ,  B29C2045/161 ,  B29C2045/1612 ,  B29C47/0009 ,  B29K2105/26 ,  B29L2031/716

摘要： Apparatus for unit cavity and multi-cavity, multi-layer injection molding and injection blow-molding machines are provided, which in preferred embodiments, include one or more co-injection nozzle means each having a central channel, at least two passageways having associated orifices which communicate with the central channel and valve means operative in the central channel and movable to block and unblock the orifices. The valve means preferably comprise an elongated sleeve having an axial central passageway and a port in its side wall and an elongated pin axially-reciprocable within the sleeve central passageway. The sleeve and pin are mounted in close tolerance slip fit relationship to prevent significant accumulation of polymer melt material therebetween. Preferably, each coinjection nozzle has a gate at one end and at least three passageway orifices, the first more proximate the gate than the others, the third operative at a position more remote from the gate than the first, and the second located between the first and third. In one embodiment, the valve means in one position blocks the second orifice while it does not block the first or third orifice or both the first and third orifices.

摘要翻译： 提供了用于单元腔和多腔，多层注射成型和注射吹塑机的设备，其在优选实施例中包括一个或多个共注射喷嘴装置，每个共注射喷嘴装置具有中心通道，至少两个具有相关孔的通道 其与中心通道连通并且阀装置在中心通道中操作并且可移动以阻塞和解除堵塞孔。 阀装置优选地包括具有轴向中心通道和其侧壁中的端口的细长套筒和在套筒中心通道内可轴向往复运动的细长销。 套筒和销以紧密公差的滑动配合关系安装，以防止其间的聚合物熔体材料的显着积聚。 优选地，每个共注射喷嘴在一端具有一个浇口和至少三个通道孔口，第一个通道孔口比其他通道更靠近闸门，第三个操作在比栅极更远离第一个位置的位置，第二个位于第一 和第三。 在一个实施例中，一个位置的阀装置阻挡第二孔口，同时它不阻塞第一或第三孔口或第一和第三孔口两者。

公开(公告)号：US4518344A

公开(公告)日：1985-05-21

申请号：US484706

申请日：1983-04-13

申请人： Maurice G. Latreille ,  William A. Tennant

发明人： Maurice G. Latreille ,  William A. Tennant

IPC分类号： B29C45/16 ,  B29C49/22 ,  B65D1/28 ,  B29C1/00 ,  B29D9/00

CPC分类号： B29C47/061 ,  B29C45/1607 ,  B29C45/1643 ,  B29C49/22 ,  B65D1/28 ,  B29B2911/14053 ,  B29B2911/14093 ,  B29B2911/1412 ,  B29B2911/14626 ,  B29B2911/14653 ,  B29B2911/14713 ,  B29B2911/1498 ,  B29B2911/14986 ,  B29C2045/161 ,  B29C2045/1612 ,  B29C47/0009

摘要： A free floating runner system wherein runner means, including a runner block and its runner extension, are mounted on their axial center lines on support means, with a gap between the runner structures and surrounding structures to allow the runner structures to freely thermally expand radially and axially.A force compensation system comprised of means, preferably hydraulic, for providing a forward force to the runner structures to offset any rearward force from axial floatation of the runner means and to provide an on-line, effective pressure contact seal between the nozzle sprues and injection cavity sprues.Methods provide an on-line effective pressure contact seal between co-injection nozzle sprues and injection cavity sprues.

摘要翻译： 一种自由浮动流道系统，其中包括流道块及其流道延伸部的流道装置在其轴向中心线上安装在支撑装置上，在流道结构和周围结构之间具有间隙，以允许流道结构自由地径向膨胀膨胀， 轴向。 一种力补偿系统，包括优选液压的装置，用于向流道结构提供向前的力，以抵消来自流道装置的轴向浮动的任何向后的力，并且在喷嘴流道和喷射之间提供在线有效的压力接触密封 腔体浇口。 方法提供共注射喷嘴和注射腔浇口之间的在线有效压力接触密封。

公开(公告)号：US06332767B1

公开(公告)日：2001-12-25

申请号：US09526438

申请日：2000-03-15

申请人： Frederick G. Kudert ,  Maurice G. Latreille ,  Robert J. McHenry ,  George F. Nahill ,  Henry Pfutzenreuter, III ,  William A. Tennant ,  Thomas T. Tung ,  John Vella, Jr.

发明人： Frederick G. Kudert ,  Maurice G. Latreille ,  Robert J. McHenry ,  George F. Nahill ,  Henry Pfutzenreuter, III ,  William A. Tennant ,  Thomas T. Tung ,  John Vella, Jr.

IPC分类号： B29C4522

CPC分类号： B29C47/061 ,  B29B2911/14053 ,  B29B2911/14066 ,  B29B2911/1408 ,  B29B2911/14093 ,  B29B2911/1412 ,  B29B2911/14126 ,  B29C45/16 ,  B29C45/1607 ,  B29C45/1643 ,  B29C47/0023 ,  B29C49/22 ,  B29C2045/161 ,  B29C2045/1612 ,  B29C2045/2689 ,  B29C2045/2893 ,  B29K2105/26 ,  B29L2031/716 ,  B65D1/28 ,  B65D81/266 ,  Y10T428/1321 ,  Y10T428/1352 ,  Y10T428/1383 ,  Y10T428/139

摘要： An injection nozzle device including multi-polymer injection nozzles comprising an assembly of shells, and having fixed, tapered passageways communicating with annular orifices close to a nozzle gate and to each other, and polymer flow balancing and directing means in the passageways in the form of concentric and eccentric chokes.

摘要翻译： 一种注射喷嘴装置，包括多聚合物注射喷嘴，其包括壳体组件，并且具有与靠近喷嘴门和彼此连接的环形孔口的固定的锥形通道，并且通道中的聚合物流动平衡和引导装置形式为 同心和偏心扼流圈