公开(公告)号：US09205582B2

公开(公告)日：2015-12-08

申请号：US13634512

申请日：2011-03-14

申请人： Geoffrey York ,  Esak Shabudin

发明人： Geoffrey York ,  Esak Shabudin

IPC分类号： B29C45/16 ,  B29C45/00 ,  B65D85/804 ,  B29C33/42

CPC分类号： B29C45/0046 ,  B29C33/42 ,  B29C45/1603 ,  B29C45/164 ,  B29C45/1642 ,  B29C2045/1614 ,  B29C2045/1648 ,  B29K2101/12 ,  B29K2995/0067 ,  B29L2031/7132 ,  B65D85/8043 ,  B65D85/8046

摘要： The present invention relates to advancements in injection molding and in particular to a method and apparatus for co-injection molding articles of complex non symmetrical geometry. The method forms a multilayer injection molded article comprising an outer skin of a first material and a central core of a second material which is encapsulated by the outer skin. The first and second materials are injected in a single stream into a cavity of an injection mold, with the second material encased within the first material. The flow of the stream is controlled by means of flow paths within the mold cavity such that both the first and second materials are present in at least one first area of the mold cavity and that only the first material is present in at least one second area of the mold cavity. The flow paths include at least one primary flow path in the first mold cavity area which divides into at least two secondary flow paths. The resistance of a first of the secondary flow paths in the at least one first mold cavity area is reduced relative to that of a second of the two secondary flow paths, which is in the at least the second mold cavity area.

摘要翻译： 本发明涉及注射成型的进展，特别涉及用于共注射成型复杂非对称几何形状的制品的方法和装置。 该方法形成多层注射成型制品，其包括第一材料的外皮和由外皮包封的第二材料的中心芯。 将第一和第二材料以单一流注射到注射模具的空腔中，其中第二材料包封在第一材料内。 流的流动通过模腔内的流动路径来控制，使得第一和第二材料都存在于模腔的至少一个第一区域中，并且仅第一材料存在于至少一个第二区域 的模腔。 流动路径包括在第一模腔区域中的至少一个主流动路径，其分成至少两个二次流动路径。 至少一个第一模腔区域中的第一二次流路的阻力相对于位于至少第二模腔区域中的两个二次流路中的第二流路的阻力减小。

公开(公告)号：US20140306365A1

公开(公告)日：2014-10-16

申请号：US14210350

申请日：2014-03-13

申请人： Kortec, Inc.

发明人： John Duffy ,  Scott Hickey

IPC分类号： B29C45/77 ,  B29C45/16

CPC分类号： B29C45/0003 ,  B29C45/1603 ,  B29C45/1607 ,  B29C45/1642 ,  B29C45/2704 ,  B29C45/2806 ,  B29C45/77 ,  B29C2045/1614 ,  B29C2045/2687 ,  B29C2045/2691 ,  B29C2045/2872 ,  B29C2945/76555 ,  B29C2945/76859 ,  B29C2945/76889 ,  B29C2945/76939

摘要： Methods and systems for co-extruding multiple polymeric material flow streams into a mold having a plurality of cavities to produce a plurality of multi-layer polymeric articles each having a consistent coverage of an interior core layer are disclosed herein. In an example method, a flow rate of a first skin material into a cavity is individually controlled for each cavity before initiation of co-injection of a second core material into the cavity, which may address inconsistent interior core layer coverage for articles from different cavities.

摘要翻译： 本文公开了用于将多个聚合物材料流流共同挤出到具有多个空腔的模具中以产生多个多层聚合物制品的方法和系统，每个多层聚合物制品具有内部芯层的一致覆盖。 在一个示例性方法中，在开始将第二芯材料共注入空腔之前，对于每个空腔分别控制第一表皮材料进入空腔的流速，这可解决来自不同腔体的制品的不一致的内芯层覆盖 。

公开(公告)号：US20140272222A1

公开(公告)日：2014-09-18

申请号：US14210353

申请日：2014-03-13

申请人： KORTEC, INC.

发明人： Paul M. Swenson

IPC分类号： B29C45/00 ,  B32B3/26

CPC分类号： B29C45/0046 ,  B29C37/0082 ,  B29C45/1642 ,  B29C45/1646 ,  B29C45/1657 ,  B29C45/77 ,  B29C2045/1614 ,  B29C2045/1648 ,  B29C2945/76545 ,  B29C2945/76595 ,  B29C2945/76765 ,  B29C2945/76859 ,  B29C2945/76862 ,  B29K2105/253 ,  B29K2823/086 ,  B29K2995/0098 ,  B29L2031/56 ,  B29L2031/712 ,  B32B3/263 ,  Y10T428/1352 ,  Y10T428/24612

摘要： Disclosed herein are methods and systems for the preparation of a co-injection molded multilayer plastic article. Some methods include co-extruding a combined polymeric stream having an interior core stream encased by an inner stream and an outer stream. One or more pulses in a thickness of the interior core stream create portions of an edge of the outer flow stream flowing along different streamlines. A first portion of an outer edge of the interior core stream flows beyond a second portion of the outer edge thereby forming one or more cohesion members that physically interlock the interior layer with the inner layer, with the outer layer or with both. Some embodiments reduce or eliminate a need for addition of an adhesive in the composite stream to prevent delamination of layers of the resulting multilayer plastic article. In some embodiments, cohesion members may be employed to produce a desired cosmetic effect in a resulting article.

摘要翻译： 本文公开了用于制备共注塑多层塑料制品的方法和系统。 一些方法包括共挤出具有由内流和外流包裹的内部核心流的组合聚合物流。 内部芯流的厚度中的一个或多个脉冲产生沿着不同流线流动的外流的边缘的部分。 内部芯流的外边缘的第一部分流过外边缘的第二部分，从而形成一个或多个内聚构件，其将内层与内层，外层或两者物理地互锁。 一些实施方案减少或消除了在复合流中添加粘合剂的需要，以防止所得多层塑料制品层的分层。 在一些实施方案中，可以使用内聚构件在所得制品中产生所需的美容效果。

公开(公告)号：US06440350B1

公开(公告)日：2002-08-27

申请号：US09329036

申请日：1999-06-09

申请人： Jobst U. Gellert ,  Denis L. Babin ,  Itsuto Nakanishi

发明人： Jobst U. Gellert ,  Denis L. Babin ,  Itsuto Nakanishi

IPC分类号： B29C4520

CPC分类号： B29C45/1607 ,  B29C2045/1614 ,  B29C2045/273

摘要： An apparatus and method for injection molding includes a first melt passage for the flow of a first material, and a second melt passage in communication with the first melt passage for the flow of a second material. The apparatus and method for injection molding also includes a valve pin that passes through the second melt passage. The valve pin has a first portion allowing the flow of the second material, but not the first material, through the second melt passage, and a second portion restricting the flow of the first material and the second material through the second melt passage. The valve pin may also be used to restrict material flow from a melt channel into a cavity. In addition, a back-flow control valve may be combined with a melt passage of the apparatus and method for injection molding. The back-flow control valve has a first portion for permitting flow of material through the melt passage, and a second portion for restricting flow of material through the melt passage.

摘要翻译： 一种用于注射成型的装置和方法包括用于第一材料流动的第一熔体通道和与第一熔体通道连通以用于第二材料流动的第二熔体通道。 注射成型装置和方法还包括穿过第二熔体通道的阀销。 阀销具有允许第二材料的流动而不是第一材料通过第二熔体通道的第一部分，以及限制第一材料和第二材料通过第二熔体通道的流动的第二部分。 阀销还可以用于限制从熔体通道进入空腔的材料流。 此外，回流控制阀可以与该装置的熔体通道和注射成型方法组合。 回流控制阀具有用于允许材料流过熔体通道的第一部分和用于限制材料流过熔体通道的第二部分。

公开(公告)号：US06187241B1

公开(公告)日：2001-02-13

申请号：US09079084

申请日：1998-05-14

申请人： Paul Swenson

发明人： Paul Swenson

IPC分类号： B29C4516

CPC分类号： B29C45/1607 ,  B29C45/1642 ,  B29C2045/1614

摘要： A multiple-plastic stream co-extruder, as for injection-molding cavities, in which the extruder is internally provided therewithin and therealong with a restrictor or throttle pin, rod or element that forces combined plastic material streams, formed with an interior core stream encased in outer and inner stream layers, into corresponding concentric annular flow stream layers that are ultimately split transversely in opposite directions into a cavity gated to the extruder, and with the core stream at a region of zero gradient in the transverse flow velocity profile within the extruder and cavity.

摘要翻译： 多模塑料流共挤出机，用于注射成型的空腔，其中挤出机内部设置有挤出机，并具有限制器或节流销，杆或元件，其强制组合的塑料材料流，其形成有封装的内部芯流 在外层和内层层中，形成对应的同心环形流动流层，其最终沿相反方向横向分裂成与浇口相连的空腔，并且芯流在挤出机内的横向流速分布中为零梯度的区域 和腔。

公开(公告)号：US5094603A

公开(公告)日：1992-03-10

申请号：US671207

申请日：1991-03-18

申请人： Jobst U. Gellert

发明人： Jobst U. Gellert

IPC分类号： B29C33/04 ,  B29C45/16 ,  B29C45/26 ,  B29C45/27 ,  B29C45/73 ,  B29L1/00 ,  B29L31/56

CPC分类号： B29C45/2725 ,  B29C45/1603 ,  B29C45/1607 ,  B29C2045/1614 ,  B29C2045/273 ,  B29C33/04

摘要： Multi-cavity injection molding apparatus to coinject pressurized melt from two or more melt sources. An inner melt passage extends through the central bore of a melt distribution plate and an adjacent heated nozzle. The nozzle has a tapered nose portion which extends into an adjacent heated cavity forming insert having a gate leading to one of the cavities. An outer melt passage is separated by curved conduits on opposite faces of the melt distribution plate into four channels which are radially spaced around the central bore of the nozzle. The four channels lead to a melt funnel duct which extends in the adjacent cavity forming insert around the nose portion of the nozzle. Thus the melt from the outer melt passage is evenly distributed around the melt from the inner melt passage when they join just before entering the gate.