New rubber patent breakthrough: high filling pre dispersion system improves the mixing efficiency of white carbon black
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On July 11, 2025, the China National Intellectual Property Administration officially authorized a patent of Shixin Rubber Technology (Dalian) Co., Ltd. entitled "a pre dispersion mixing system of high filling precipitation silica" (Announcement No. CN223085167U). The system achieves efficient mixing of white carbon black and additives through a two-stage mixing tank design: the first mixing tank uses a transverse stirrer to complete the primary pretreatment of liquid silane coupling agent and white carbon black, while the second mixing tank uses a longitudinal stirrer to achieve the secondary pretreatment of dispersant and mixture, allowing the material to circulate up and down in the tank, ensuring that the dispersant is uniformly mixed in a short period of time.
The person in charge of Shixin Rubber Technology stated that the system can increase mixing efficiency by 30% and reduce energy consumption by 15%, especially suitable for high-performance tires, seals, and other fields that require strict dispersion. As of July 2025, Shixin Rubber has applied for a total of 89 patents, forming a full chain technical barrier covering raw material processing, process optimization, and equipment transformation.