The difference between the open mill and the internal mixer process is that the choice of the open mill or the mixing during the rubber mixing is selected according to the characteristics of the rubber compound.

There are many differences between the rubber mixer and the mixer. It is not just about reducing the labor intensity and operating conditions. If the mixing process is not designed, the workers prefer to start the rubber mixer. Because it is easy to operate, it is already very skilled, and the glue that is refining is basically no problem;

The glue that is glued out, although the material of one refining is several times that of the open mill, but the process is not designed well, the rubber is scorched or unevenly dispersed, the actual labor has been spent, and the raw materials are wasted. It has to be re-mixed, so how to design the internal mixer process and strictly control the temperature is a major problem in the mixing machine of the mixer. Only reasonable use can get twice the result with half the effort.

The difference between the performance of the rubber smelted on the mill and the glue smelted in the mixer can be very large. This difference can also be said that the mixing process of the mixer is not sure, and the rubber is burnt or Caused by uneven dispersion.

The mixing amount of the open mill is small, and the various compounding doses are added. Because it is open type, the heat dissipation is fast, and the temperature influence is not so obvious. If the temperature is too high, it can be stopped for a period of time, let it cool and then mix; The internal mixer is several times more than the open mill. During the mixing process, the temperature change must be strictly controlled, and the order of addition of the small materials must be controlled, which will affect the uniformity and scorch of the mixing; The temperature of the material must be strictly controlled. The temperature inside the internal mixer is very different from the temperature of the rubber compound. Therefore, the temperature must be considered when controlling the temperature. Otherwise, the rubber compound is easily scorched (the internal temperature of the rubber compound is higher than the internal temperature of the rubber material. -60 degrees)

In addition, due to the large amount of compaction, it was previously considered to be vulcanized and finally added through the open mill. Later, it was found that this would not work, because the material of a car mixer is equivalent to the amount of mills of several cars, and it is impossible to mix. Adding sulfur, if you add sulfur through the open mill, you must divide the material of the mixer into several car mills, but the reality is that this is not possible, because you can’t To ensure uniform mixing, the recalculated composition of the split compound is generally non-uniform and incorrect, and the added sulfur will also be wrong and unreasonable. Therefore, vulcanization must also be added through the mixing process, at which time temperature control is more important.