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公开(公告)号:US20030136498A1
公开(公告)日:2003-07-24
申请号:US10366529
申请日:2003-02-13
Applicant: Michelin Recherche et Technique S.A.
Inventor: Didier Calvar , Bernard Marechal
IPC: B29C047/00
CPC classification number: B29C47/062 , B29C47/0019 , B29C47/065 , B29C47/145 , B29C47/32 , B29C47/385 , B29C47/56 , B29D2030/526 , B60C11/00 , B60C19/08 , Y10S152/02
Abstract: 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).
Abstract translation: 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。