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    Apparatus for extruding a cross-linked material
    57.
    发明授权
    Apparatus for extruding a cross-linked material 失效
    用于挤出交联材料的装置

    公开(公告)号：US4285648A

    公开(公告)日：1981-08-25

    申请号：US94929

    申请日：1979-11-16

    Applicant: Robert Jocteur

    Inventor： Robert Jocteur

    IPC: H01B13/14 ,  B29B7/00 ,  B29C47/00 ,  B29C47/02 ,  B29C47/10 ,  B29C47/78 ,  B29C47/92 ,  A01J21/00 ,  A21C3/00

    CPC classification number: B29C47/02 ,  B29C47/0016 ,  B29C47/1036 ,  B29C47/1063 ,  B29C47/822 ,  B29C47/0004 ,  B29C47/0014 ,  B29K2101/10 ,  B29K2105/0005 ,  B29K2301/10

    Abstract: A method of extruding a cross-linked material, more particularly an insulating cross-linked material around an electrical cable. In an extrusion machine comprising a housing terminated with an extrusion head and provided with a filtering means adjacent the outlet end of said housing, the cross-linkable product is fed without addition of a cross-linking agent, said cross-linking agent being first introduced in said cross-linkable material downstream said filtering means. The cross-linkable material is kept in the housing at an elevated temperature to be in a fluid state, the cross-linking agent being introduced at a temperature slightly lower than its reaction temperature, whereby the extrudate may be at a temperature near the maximum temperature admissible for the extrusion of said material.

    Abstract translation: 一种在电缆周围挤出交联材料，更具体地是绝缘交联材料的方法。 在挤出机中，包括用挤出头端接的壳体，并且邻近所述壳体的出口端设有过滤装置，所述可交联产物在不加入交联剂的情况下进料，所述交联剂首先被引入 在所述过滤装置下游的所述可交联材料中。 可交联材料在升高的温度下保持在壳体中以处于流体状态，交联剂在略低于其反应温度的温度下引入，由此挤出物可处于接近最高温度的温度 允许用于挤出所述材料。

    Equipment for preparation of foamed polyolefin insulated wires for telecommunication cables
    59.
    发明授权
    Equipment for preparation of foamed polyolefin insulated wires for telecommunication cables 失效
    用于通信电缆的泡沫聚烯烃绝缘电线的制备设备

    公开(公告)号：US3902704A

    公开(公告)日：1975-09-02

    申请号：US43328174

    申请日：1974-01-14

    Applicant: FUJIKURA LTD

    Inventor： ISHIBASHI MASASHI ,  SUZUKI HIDEO

    IPC: H01B13/14 ,  B29B7/00 ,  B29C44/32 ,  B29C44/34 ,  B29C47/00 ,  B29C47/10 ,  B29B1/06

    CPC classification number: B29C44/3449 ,  B29C44/322 ,  B29C44/3442 ,  B29C47/0014 ,  B29C47/1036 ,  B29C47/1063 ,  B29K2105/0005 ,  Y10S264/05

    Abstract: In an extruder for the preparation of foamed resin insulated wires for telecommunication cables such as coaxial cables, a passage for a blowing fluid is provided to extend through the central portion of the extruder screw in the axial direction and open in the low pressure zone of the extruder, and at least one nozzle is mounted on the screw surface or the side face of the flight in the low pressure zone of the extruder to inject into and mix with into a molten resin a blowing fluid forwarded under pressure through said passage. The foamed resin insulated wires produced by the equipment have excellent electric and mechanical properties, in which the insulating resin coating has very high mechanical strength even at a very thin thickness. Further, the extrusion coating speed can be much increased when the above equipment is employed.

    Abstract translation: 在用于制备用于诸如同轴电缆的通信电缆的泡沫树脂绝缘电线的挤出机中，提供用于吹塑流体的通道以沿轴向方向延伸穿过挤出机螺杆的中心部分并且在挤压机的低压区域中打开 挤出机，并且至少一个喷嘴安装在挤出机的低压区域的螺旋表面或飞行器的侧面上，以注入熔融树脂中并将其在压力下通过所述通道转运。 由该设备制造的发泡树脂绝缘电线具有优异的电气和机械性能，其中绝缘树脂涂层即使在非常薄的厚度下也具有非常高的机械强度。 此外，当使用上述设备时，挤出涂布速度可以大大增加。

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