Quality inspection method and quality inspection system for unvulcanized rubber material, and production method and production system for unvulcanized rubber material

A production method for producing a final rubber material, the method comprising:

• feeding a primary rubber material that is a mixture of unvulcanized rubber and an unvulcanizing compounding agent of predetermined type, and a vulcanizing compounding agent of predetermined type into an extruder;
• mixing the primary rubber material and the vulcanizing compounding agent in the extruder to continuously produce a final rubber material;
• calculating a compounding ratio of the vulcanizing compounding agent to the final rubber material by a final calculator based on a dielectric constant of the final rubber material extruded from the extruder;
• and
• adjusting a ratio of the vulcanizing compounding agent fed to the extruder to the unvulcanized rubber such that the calculated compounding ratio is within a preset vulcanizing compounding reference range.