公开(公告)号：EP4335612A1

公开(公告)日：2024-03-13

申请号：EP23192880.5

申请日：2023-08-23

申请人： The Goodyear Tire & Rubber Company

发明人： SCHWEITZER, Claude ,  KAES, Christian, Jean-Marie ,  DELROISSE, Pauline Monique Marie-Lucie Ghislaine ,  ORLEWSKI, Pierre Felix ,  FREYLINGER, Michael ,  FOURME, Sylvain

IPC分类号： B29C48/92 ,  B29C48/21 ,  B29C48/49 ,  B29D30/00 ,  B29C48/12

摘要： A tire tread production line and a method for manufacturing a tire tread is disclosed. The production line comprises: a coextruder (12) for coextruding at least two rubber compositions, the coextruder (12) comprising at least two feeding inlets (22) for receiving the at least two rubber compositions, the coextruder (12) further comprising one or at least two screws (24) for driving the received at least two rubber compositions, an extrusion die (26) for forming a multi-layer tire tread extrudate (128), the one or the at least two screws (24) being configured to drive the at least two rubber compositions in the extrusion die (26); a THz sensor (14), the THz sensor being configured to irradiate the multi-layer tire tread extrudate (28) with THz electromagnetic radiation, and receiving a response of the multi-layer tire tread extrudate (28) to the THz electromagnetic radiation; and a controller (18) operatively connected to the coextruder (12) and to the THz sensor (14), the controller (18) being configured to operate the coextruder (12) based on the response of the multi-layer tire tread extrudate (28) to the THz electromagnetic radiation.

公开(公告)号：EP4331821A1

公开(公告)日：2024-03-06

申请号：EP23192859.9

申请日：2023-08-23

申请人： The Goodyear Tire & Rubber Company

发明人： SCHWEITZER, Claude ,  ORLEWSKI, Pierre Felix ,  KAES, Christian ,  MELAIYE, Abdulkareem Modupe ,  FREYLINGER, Michael ,  FOURME, Sylvain ,  DELROISSE, Pauline Monique Marie-Lucie Ghislaine

IPC分类号： B29D30/52 ,  B29C48/21 ,  B29C48/92 ,  G01B11/06 ,  B29L30/00

摘要： A method and apparatus for producing or characterizing a multi-layered tire tread is disclosed. The method comprises: providing a first rubber composition (24) having a first refractive index; providing a second rubber composition (26) having a second refractive index; determining a difference between the first refractive index and the second refractive index; comparing the difference to a threshold refractive index; adding a refractive index modifier (138, 238, 338) to the first rubber composition (24) and/or to the second rubber composition (26) in case the comparison provides that difference is lower than the threshold refractive index; producing a multi-layered tire tread (10) comprising a first layer (12) comprising the first rubber composition and also comprising a second layer (14) comprising the second rubber composition; irradiating the multi-layered tire tread with a THz electromagnetic radiation; and receiving radiation transmitted and/or radiation reflected by the multi-layered tire tread.