Patent ID: 9714325
Date: 2017-07-25
CPC Classifications: C08J,C08K

Claim:
1. A method for producing a rubber wet masterbatch obtained by use of at least a filler, a dispersing solvent, and a rubber latex solution as raw materials, comprising a solidifying step of mixing a slurry solution containing the filler and the dispersing solvent with the rubber latex solution, and solidifying the resultant mixture to produce a filler-containing rubber solidified product, a dehydrating step of using a first uniaxial extruder to dehydrate the filler-containing rubber solidified product while the solidified product is heated into the range of 100 to 180° C., thereby producing a rubber wet masterbatch, and a drying plasticizing step of using a second uniaxial extruder to plasticize the rubber wet masterbatch while the rubber wet masterbatch is heated into the range of 120 to 180° C., thereby producing the rubber wet masterbatch further decreased in water content by percentage, the method having no cooling step between the dehydrating step and the drying plasticizing step, wherein in the drying plasticizing step, a mechanical energy of 70 Wh/kg or less is applied to the rubber wet masterbatch inside the second uniaxial extruder.