To provide a production method of a rubber composition for a tire, by which a rubber composition for tire can be obtained that is improved in dispersibility of silica and improved in high mileage property and wet grip performance in a balanced manner, while achieving good processability.SOLUTION: The production method of a rubber composition for a tire includes: a base kneading step of kneading a rubber component, silica, a silane coupling agent and a vulcanization accelerator; a finish kneading step of kneading a kneaded material 1 obtained in the base kneading step with a vulcanizer; and an extrusion step of extruding a kneaded material 2 obtained in the finish kneading step by use of an extruder. The extruder includes a cylinder, a screw and pins disposed to protrude on an inner surface of the cylinder, in which the pins are arranged as protruding in an average number of 8 to 15 per the pitch of the screw.SELECTED DRAWING: None
【課題】良好な加工性を得つつ、シリカの分散性を向上させ、低燃費性及びウェットグリップ性能がバランス良く改善されたタイヤ用ゴム組成物が得られるタイヤ用ゴム組成物の製造方法を提供する。【解決手段】ゴム成分、シリカ、シランカップリング剤及び加硫促進剤を混練するベース練り工程と、前記ベース練り工程で得られた混練物1及び加硫剤を混練する仕上げ練り工程と、押出機により、前記仕上げ練り工程で得られた混練物2を押し出す押出工程とを含み、前記押出機は、シリンダ、スクリュー、及び前記シリンダの内面に突設したピンを備え、かつ前記ピンをスクリューピッチ毎に平均8〜15個突設したものであるタイヤ用ゴム組成物の製造方法。【選択図】なし
PRODUCTION METHOD OF RUBBER COMPOSITION FOR TIRE
タイヤ用ゴム組成物の製造方法
2019-02-07
Patent
Elektronische Ressource
Japanisch
IPC: | C08J Verarbeitung , WORKING-UP / B60C VEHICLE TYRES , Fahrzeugreifen / C08K Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe , USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS / C08L COMPOSITIONS OF MACROMOLECULAR COMPOUNDS , Massen auf Basis makromolekularer Verbindungen |
RUBBER COMPOSITION FOR TIRE, PRODUCTION METHOD FOR RUBBER COMPOSITION FOR TIRE, AND TIRE
Europäisches Patentamt | 2017
|RUBBER COMPOSITION FOR TIRE, PRODUCTION METHOD FOR RUBBER COMPOSITION FOR TIRE, AND TIRE
Europäisches Patentamt | 2015
|PRODUCTION METHOD OF RUBBER COMPOSITION FOR TIRE AND RUBBER COMPOSITION FOR TIRE
Europäisches Patentamt | 2017
|PRODUCTION METHOD OF RUBBER COMPOSITION FOR TIRE, RUBBER COMPOSITION FOR TIRE AND PNEUMATIC TIRE
Europäisches Patentamt | 2017
|Europäisches Patentamt | 2020
|