Lab Two Roll Open Mixing Mills

This two roll mixing mill ,also named as open mixing mill ,or rubber mixer ,it consist of two horizontally placed hollow metal cylinders , bearing, gap adjusting device, electric control system, safety device, etc. Its two roll rotate towards each other(in opposite direction) ,the distance/gap between these two rolls can be varied, typically between 2 to 20 mm. Basically ,the speeds of the two rolls are often different, the back roll rotate faster than the front,so that enforce the compound to stay on one roller.