The benefits of reverse mixing

Reverse mixing, also known as back mixing and refining, is an extension of the mixing process of the internal mixer that appeared in the 1970s. The feeding sequence is opposite to the traditional order. In the traditional rubber mixing process (whether open or mixed), the raw rubber is added without exception, and then various compounding agents are added in sequence. Reverse mixing is the opposite of the process, the total order is reversed to the first addition of the compounding agent, followed by the raw rubber. That is to say, first add various additives (except sulfur, accelerator), add the raw rubber after mixing, and then pressurize and mix.

Reverse mixing has the following advantages:
1.Simplify the feeding sequence and shorten the rubber mixing cycle. Because the additive is basically added once, the number of lifting of the upper plug is reduced, thereby compressing the entire cycle. For example, if the tire ply glue is back-mixed, the time required per cycle is 4 minutes shorter than the conventional feeding sequence.

2. Energy saving Because the rubber mixing cycle is shortened, the energy consumption per batch of glue is also reduced accordingly.

3. Improve the dispersion of each component in the compound.