| 摘要 |
PURPOSE:To provide the manufacturing method of weatherstrip, by which sliding characteristics and wear durability between the weatherstrip, which is installed on the edge of the opening of an automobile and other member is enhanced and manufacturing process can be simplified. CONSTITUTION:In the manufacturing method of the weatherstrip concerned, a green rubber or thermosetting resin extruder 13 and a thermoplastic resin extruder 19 are arranged parallel to each other. Further, material passages lead from both the extruders 13 and 19 are communicated with a composite extrusion head 17. Composite formed body 23, in which the thermoplastic resin is integrally formed at the proper positions on the surface of the above- mentioned rubber or thermosetting resin, is produced with the composite extrusion head 17. After that, the composite formed body 23 extruded from the composite extrusion head 17 is passed through a vulcanizing tank 25 so as to be heat-bonded and cured. Finally, the cured body is passed through a cooling tank 27 so as to obtain weatherstrip as product. |
