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130 条记录 (耗时 0.017 秒)

    Apparatus providing uniform resin distribution in a coextruded product
    2.
    发明授权
    Apparatus providing uniform resin distribution in a coextruded product 失效
    在共挤出产品中提供均匀树脂分布的装置

    公开(公告)号：US4421465A

    公开(公告)日：1983-12-20

    申请号：US359554

    申请日：1982-03-18

    申请人： Fox J. Herrington

    发明人： Fox J. Herrington

    IPC分类号： B29C47/06 ,  B29C47/20 ,  B29C47/28 ,  B29C47/70 ,  B29C47/92 ,  B29F3/06

    CPC分类号： B29C47/065 ,  B29C47/0023 ,  B29C47/0026 ,  B29C47/20 ,  B29C47/268 ,  B29C47/28 ,  B29C47/702 ,  B29C47/92 ,  B29C2947/92514 ,  B29C2947/926 ,  B29C2947/92695 ,  B29C2947/9279 ,  B29C47/26

    摘要： Disclosed is a method and apparatus for ensuring uniform distribution of higher and lower viscosity or flow rate resins in a product produced by a coextrusion process. A flow restriction is provided in the flow path of the lower viscosity or flow rate resin to increase the pressure drop of this resin as it passes through a coextrusion die. The increased pressure drop introduced by the flow restriction causes the lower viscosity or flow rate resin to be more uniformly distributed in the extruded product. A specific die construction providing a uniform resin flow channel within the die is also described.

    摘要翻译： 公开了一种用于确保通过共挤出方法生产的产品中较高和较低粘度或流速树脂均匀分布的方法和装置。 在较低粘度或流速树脂的流动路径中提供流动限制，以增加该树脂通过共挤出模头时的压降。 通过流动限制引入的增加的压降导致较低粘度或流速树脂在挤出产品中更均匀地分布。 还描述了在模具内提供均匀的树脂流动通道的特定模具结构。

    Moulding of synthetic plastics products
    3.
    发明授权
    Moulding of synthetic plastics products 失效
    合成塑料制品的成型

    公开(公告)号：US4183448A

    公开(公告)日：1980-01-15

    申请号：US749092

    申请日：1976-12-09

    申请人： David D. Nash

    发明人： David D. Nash

    IPC分类号： B29C37/00 ,  B29C35/02 ,  B29C35/16 ,  B29C45/00 ,  B29C45/50 ,  B29C45/74 ,  B29C45/77 ,  B29C47/82 ,  B29C47/92 ,  B29F3/06 ,  B29F3/08

    CPC分类号： B29C47/82 ,  B29C45/50 ,  B29C45/5092 ,  B29C45/74 ,  B29C47/822 ,  B29C47/92 ,  B29C2035/0211 ,  B29C2035/1625 ,  B29C2947/92209 ,  B29C2947/924 ,  B29C2947/92409 ,  B29C2947/92704 ,  B29C2947/92895 ,  B29C2947/92904 ,  B29C2947/92971 ,  B29C47/0009

    摘要： Apparatus for moulding articles of synthetic plastics. Plasticized plastics material is fed by a screw within a cylinder, along the cylinder to a nozzle from whence the material is injected into the mould cavity. The feeding of the material into the mould cavity is however effected by rotation of the screw almost in its forwardmost position instead of by longitudinal movement of the screw from its rearwardmost to its forwardmost position. The longitudinal position of the screw is adjusted during filling of the mould cavity by biasing apparatus acting axially on the screw and controlled by means sensing the position of the screw.The temperature distribution throughout the cylinder, the nozzle, the screw and the screw tip is controlled by separate cooling circuits for the various zones, the various cooling circuits coming into operation at various times during a moulding cycle, as determined by timing apparatus.

    摘要翻译： 用于模制合成塑料制品的装置。 增塑塑料通过圆柱体内的螺杆被供给到从该材料注入模腔中的喷嘴。 然而，通过将螺钉几乎在其最前端位置的旋转来实现材料进入模腔中，而不是通过螺杆从其最后到最前端的位置的纵向运动来实现。 螺杆的纵向位置在通过轴向地作用在螺钉上的偏置装置在模具腔的填充期间被调节，并且通过感测螺钉的位置来控制。 整个气缸，喷嘴，螺杆和螺杆尖端的温度分布由用于各个区域的分开的冷却回路控制，各种冷却回路在定型装置确定的模制循环期间在不同时间运行。

    Apparatus for controlling resistance to extrusion of a rod-like body through a die
    7.
    发明授权
    Apparatus for controlling resistance to extrusion of a rod-like body through a die 失效
    用于通过模具来控制棒状体的挤出阻力的装置

    公开(公告)号：US3989433A

    公开(公告)日：1976-11-02

    申请号：US524577

    申请日：1974-11-18

    申请人： Anthony H. Furman

    发明人： Anthony H. Furman

    IPC分类号： B30B11/00 ,  B30B11/22 ,  B30B11/24 ,  C10J3/30 ,  C10L5/06 ,  B29F3/06

    CPC分类号： C10L5/06 ,  B30B11/005 ,  B30B11/221 ,  B30B11/24 ,  C10J3/30

    摘要： Improved extrusion apparatus is shown for the preparation of a rod-like body from a coal-containing particulate mixture. Control mechanisms are disclosed for automatically controlling the throughput resistance experienced by the rod-like (or a developing version thereof) body through a die. Portions of the die wall near the outlet end thereof are adapted for inward displacement in response to these control mechanisms. This embodiment may also be coupled with a longitudinally movable die and control means for adjusting the length of the consolidating coal-containing mixture in contact with the surface of the movable die.

    摘要翻译： 显示了用于从含煤颗粒混合物制备棒状体的改进的挤出装置。 公开了用于通过模具自动控制棒状（或其显影版本）体经历的通过量阻力的控制机构。 靠近其出口端的模具壁的部分适于响应于这些控制机构而向内移动。 该实施例还可以与纵向移动的模具和控制装置联接，用于调节与活动模具的表面接触的固结含煤混合物的长度。

    Screw type apparatus for drying moist polymeric materials
    8.
    发明授权
    Screw type apparatus for drying moist polymeric materials 失效
    用于干燥湿聚合材料的螺杆式设备

    公开(公告)号：US3981658A

    公开(公告)日：1976-09-21

    申请号：US543492

    申请日：1975-01-23

    申请人： George Oliver Briggs

    发明人： George Oliver Briggs

    IPC分类号： B29C48/395 ,  B29C48/76 ,  B29C48/92 ,  B29F3/06

    CPC分类号： B29C47/762 ,  B29C47/38 ,  B29C47/667 ,  B29C47/92 ,  B29C2947/92514 ,  B29C2947/926 ,  B29C2947/92704 ,  B29C2947/92723 ,  B29C2947/92876 ,  B29C47/0009 ,  B29C47/44

    摘要： The pressure and temperature and in some cases the flow rate of fluids such as polymers are controlled by reducing the cross-sectional area of the conduit carrying the fluid to provide a flow channel communicating with the inner surface of the conduit whose cross-sectional area is less than that of the conduit. A valve housing is provided containing a chamber which communicates with the flow channel. The pressure and temperature and in some cases the flow rate of the fluid is controlled by adjusting the position of a valve member slideably disposed in the chamber. As the valve member slides within the chamber, it enlarges or reduces the cross-sectional area of the flow channel to change the flow resistance of the channel, thereby changing the pressure and temperature upstream of the channel and in some cases the flow rate through the channel.In applications where the material at the upstream end of the channel is wet and at a substantially greater pressure than the downstream end, it is desirable to also provide an elongated chamber whose inlet port communicates with the downstream end of the channel and which contains means for advancing and compacting material emanating from the downstream end of the channel. In cases where fragmentation of the material is produced by a rapid, and sometimes explosive, vaporization of the moisture associated therewith upon exposure of the material to the low pressure at the downstream end of the channel, the chamber contains the explosion, collects the resulting fragmented materials and compacts the fragments into a form more convenient to handle.

    摘要翻译： 压力和温度以及在某些情况下流体如聚合物的流速通过减小承载流体的导管的横截面面积来控制，以提供与导管的内表面连通的流动通道，其横截面积为 小于管道。 阀壳体设有容纳与流路连通的腔室。 压力和温度以及在某些情况下通过调节可滑动地设置在腔室中的阀构件的位置来控制流体的流速。 当阀构件在室内滑动时，其扩大或减小了流动通道的横截面面积，以改变通道的流动阻力，从而改变通道上游的压力和温度，并且在某些情况下，通过通道的流速 渠道。

    Process for production of cellular thermoplastic bodies
    10.
    发明授权
    Process for production of cellular thermoplastic bodies 失效
    生产细胞热塑性体的方法

    公开(公告)号：US3975473A

    公开(公告)日：1976-08-17

    申请号：US583663

    申请日：1975-06-04

    申请人： William P. Mulvaney

    发明人： William P. Mulvaney

    IPC分类号： B29B7/00 ,  B29C44/32 ,  B29C44/34 ,  B29C47/00 ,  B29C47/02 ,  B29C47/10 ,  B29C47/28 ,  B29C47/68 ,  B29C47/92 ,  B29D27/00 ,  B29F1/06 ,  B29F3/06

    CPC分类号： B29C44/322 ,  B29C44/3442 ,  Y10S264/05 ,  Y10S264/13

    摘要： A process is provided for the production of a cellular thermoplastic body, wherein solid thermoplastic material is melted under pressure in an extruder, a gaseous blowing agent is injected into the molten thermoplastic material under pressure and said molten thermoplastic material and gaseous blowing agent is passed to a zone of reduced pressure to effect the cellular expansion of said thermoplastic material by said gaseous blowing agent, and wherein said gaseous blowing agent is metered at sonic velocity at a point upstream of the injection of said gaseous blowing agent into said molten thermoplastic material.

    摘要翻译： 提供了一种制备多孔热塑性体的方法，其中固体热塑性材料在挤出机中在压力下熔化，气体发泡剂在压力下注入熔融热塑性材料中，并将所述熔融热塑性材料和气态发泡剂传递至 减压的区域，以通过所述气态发泡剂进行所述热塑性材料的细胞膨胀，并且其中所述气态发泡剂在所述气态发泡剂注入所述熔融热塑性材料的上游点处以声速计量。