Abstract: A strip member application system for feeding a ribbon-like rubber strip (4) through a clearance between application rollers forming a pair (11), and applying the rubber strip (4) onto a rotational member (2). A guide roller (7) to be wound by the rubber strip (4) is provided on the upstream side of the application roller pair (11), and defines a substantially U-shaped detour path extending downwards. A first and a second auxiliary rollers (6, 8) are arranged on the downstream side and the upstream side of the guide roller (7), respectively. The application roller pair (11) can be swung integrally with the guide roller (7) and the second auxiliary roller (8), within a horizontal plane and about a pivot that is spaced from the guide roller (7) toward the first auxiliary roller (6).

Abstract: The present invention easily increases an extrusion speed of strip-shaped member B from a gear pump extruder 21. Unvulcanized rubber K heated by a heater 17 is extruded temporarily as a strip-shaped body Z under the atmospheric pressure, and thereafter, is extruded from the gear pump extruder 21 as the strip-shaped member B, so that a temperature of the strip-shaped member B at the time of extrusion is lowered compared with that in a conventional technology. Here, even when the temperature of the strip-shaped member B is risen up to that in the conventional technology, any problem is not likely to occur, so that it is allowed to speed up, only by a degree corresponding to the above-mentioned difference between the temperatures, an operation speed of the respective heater 17, a pushing means 35, and the gear pump extruder 21, in other words, to rise the extrusion speed in the extruder 21.

Abstract: A method for extruding a rubber strip for tire constitutive members, allowing the facility to be made compact and having excellent energy efficiency, and a strip rubber extrusion system for carrying out the method. In the method for extruding a rubber strip for tire constitutive members according to the invention, the rubber to be extruded from an extruder (1) is warmed-up by a gear pump type warming-up machine (2) and directly fed to the extruder (1).

Abstract: A strip member application system for feeding a ribbon-like rubber strip (4) through a clearance between application rollers forming a pair (11), and applying the rubber strip (4) onto a rotational member (2). A guide roller (7) to be wound by the rubber strip (4) is provided on the upstream side of the application roller pair (11), and defines a substantially U-shaped detour path extending downwards. A first and a second auxiliary rollers (6, 8) are arranged on the downstream side and the upstream side of the guide roller (7), respectively. The application roller pair (11) can be swung integrally with the guide roller (7) and the second auxiliary roller (8), within a horizontal plane and about a pivot that is spaced from the guide roller (7) toward the first auxiliary roller (6).

Abstract: The stain resistant cover composition of the present invention for colored rubber part of a tire is characterized by that it comprises water of 100 parts by weight, polyvinyl alcohol of 1.0 to 50 parts by weight, a vinyl acetate resin emulsion of 15 to 150 parts by weight (solid content), a surfactant of 0.5 to 5.0 parts by weight, and a silicon oil of 0.5 to 5.0 parts by weight. The stain resistant protective film of the present invention for colored rubber part of a tire is used as a stain resistant protective film for a colored portion in the side wall part of a tire, wherein the above protective film comprises polyvinyl alcohol, a vinyl acetate resin emulsion, a surfactant, and a silicon oil.