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    Process and apparatus for the coextrusion of rubber mixtures
    1.
    发明授权
    Process and apparatus for the coextrusion of rubber mixtures 有权
    橡胶混合物共挤出的方法和设备

    公开(公告)号：US06994817B2

    公开(公告)日：2006-02-07

    申请号：US10366529

    申请日：2003-02-13

    申请人： Didier Calvar ,  Bernard Marechal

    发明人： Didier Calvar ,  Bernard Marechal

    IPC分类号： B29C47/06 ,  B29C47/12 ,  B29D30/52 ,  B60C1/00 ,  B60C19/08

    CPC分类号： B29C47/062 ,  B29C47/0019 ,  B29C47/065 ,  B29C47/145 ,  B29C47/32 ,  B29C47/385 ,  B29C47/56 ,  B29D2030/526 ,  B60C11/00 ,  B60C19/08 ,  Y10S152/02

    摘要： The invention concerns a process and apparatus for the coextrusion of rubber mixtures, comprising a main extruder (1) with an extrusion head (10) having at least two flow channels (14, 15), each for a rubber mixture (A, B), the channels opening into an extrusion orifice (18) through which the two rubber mixtures (A, B) are propelled. The extrusion orifice (18) is delimited by a first wall (111) and a second wall (161). The apparatus also comprises at least one micro-extruder (2) for a third rubber mixture (C), whose extrusion head (22) is provided at its end with a nozzle (23) passing through the two flow channels (14, 15) such that the third rubber mixture (C) is inserted into each rubber mixture (A, B) upstream from the extrusion orifice (18).

    摘要翻译： 本发明涉及用于共挤出橡胶混合物的方法和装置，其包括具有至少两个流动通道（14,15）的挤出头（10）的主挤出机（1），每个用于橡胶混合物（A，B） ，所述通道通向挤压孔（18），两个橡胶混合物（A，B）通过挤压孔推动。 挤压孔（18）由第一壁（111）和第二壁（161）界定。 所述设备还包括用于第三橡胶混合物（C）的至少一个微型挤出机（2），其挤出头部（22）在其端部设有穿过两个流动通道（14,15）的喷嘴（23） 使得第三橡胶混合物（C）从挤压孔（18）的上游插入每个橡胶混合物（A，B）中。

    Electrically conductive tire and extrusion equipment for a section with a conductive insert
    2.
    发明授权
    Electrically conductive tire and extrusion equipment for a section with a conductive insert 失效
    带导电插件的导电轮胎和挤压设备

    公开(公告)号：US06834693B1

    公开(公告)日：2004-12-28

    申请号：US09645096

    申请日：2000-08-24

    申请人： Didier Calvar ,  Serge Nicolas ,  Daniel Bardy

    发明人： Didier Calvar ,  Serge Nicolas ,  Daniel Bardy

    IPC分类号： B29C4706

    CPC分类号： B29C47/064 ,  B29C47/0019 ,  B29C47/32 ,  B29C47/56 ,  B29D2030/526 ,  B60C11/18 ,  B60C19/08 ,  Y10S152/02

    摘要： A tire having a tread consisting of two circumferential layers of non-conductive material, each layer containing a circumferential insert made of a conductive mix and having on the contact surface between the two layers a circumferential footprint, the first of these layers having on the said surface a circumferential footprint with a circular path of width e, the second layer having on the said surface a circumferential footprint of width e′ lying across and having crests on either side of the circular path of the first layer, such that circumferentially between the two paths there are numerous points of contact which ensure electrical connection between the two conductive elements. The second layer with its insert is extruded from a main extruder for the extrusion of the portion of a tread in the unvulcanized condition, and a micro-extruder whose extrusion nozzle is fitted with a cutting edge and whose extrusion orifice is directed against a conveyor associated with the main extruder.

    摘要翻译： 一种轮胎，具有由两层非导电材料构成的胎面，每个层包含由导电混合物制成的周向插入件，并且在两层之间的接触表面上具有周向覆盖区，这些层中的第一层具有所述 表面具有宽度为e的圆形路径的周向覆盖区，所述第二层在所述表面上具有跨过第一层的圆形路径的两侧的宽度e'的周向覆盖区域，并且在第二层的圆周路径的任一侧具有顶部， 路径有许多接触点，确保两个导电元件之间的电连接。 具有其插入件的第二层从主挤出机挤出，用于在未硫化状态下挤出胎面部分，以及挤出喷嘴装配有切割边缘并且其挤出孔针对传送带相关联的微型挤出机 与主挤出机。