MANUFACTURING METHOD OF CONDUCTIVE RUBBER ROLLER

• Main Authors: OTA ERIKA, TANAKA MASAKAZU, MARUI TAKASHI
• Format: Patent
• Language: English; Japanese
• Published: 14.12.2017
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BEARINGS; BLASTING; CHEMISTRY; CINEMATOGRAPHY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HOLOGRAPHY; LIGHTING; MAGNETOGRAPHY; MECHANICAL ENGINEERING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; THERMAL INSULATION IN GENERAL; TRANSPORTING; USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS; WEAPONS; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

PROBLEM TO BE SOLVED: To provide a manufacturing method capable of suppressing variations in the electric resistance values of a conductive rubber roller 2.SOLUTION: A manufacturing method of a conductive rubber roller 2 includes: (1) a preheating step of heating a rubber composition containing base material rubber and carbon black to a predetermined temperature t1, and keeping the rubber composition at the temperature t1 for over 10 minutes and 20 minutes or less; (2) a temperature increase step of increasing a temperature of the rubber composition at a speed of 20°C/min or less, from the temperature t1 to a temperature t3 higher than the temperature t1; and (3) a main heating step of keeping the rubber composition at the temperature t3, and causing crosslinking reaction on the base material rubber.SELECTED DRAWING: Figure 1 【課題】導電性ゴムローラ２の電気抵抗値のバラツキが抑制されうる製造方法の提供。【解決手段】導電性ゴムローラ２の製造方法は、（１）基材ゴムとカーボンブラックとを含有するゴム組成物を所定温度ｔ１まで加熱し、１０分を超えて２０分以下の時間、この温度ｔ１にて上記ゴム組成物を保持する予備加熱工程、（２）上記ゴム組成物の温度を、上記温度ｔ１から、上記温度ｔ１よりも高い温度ｔ３まで、２０℃／分以下の速度で昇温させる昇温工程、及び（３）上記ゴム組成物を上記温度ｔ３に保持し、上記基材ゴムに架橋反応を起こさせる本加熱工程を含む。【選択図】図１