1、Why can the opening machine transform the highly elastic raw rubber into plasticised rubber with plasticity state?
Plastic refining with the opening machine, mainly through the two relatively rotating rollers on the rubber material to produce the shear, extrusion effect, so that the rubber material of the original macromolecular chain is interrupted, thus making the rubber material original elasticity is reduced, the degree of plasticity is increased, conducive to the following processing procedures.
At present, the main plastic refining methods used are wrapped roller refining method and thin through the plastic refining method.

2, how to mix the rubber with a variety of agents evenly together?
In the process of rubber refining, the main purpose of the opening machine is to rely on two relatively rotating rollers to produce extrusion, shear effect on the rubber, after many times of kneading, as well as kneading process accompanied by chemical action, the rubber internal macromolecular chain interruption, so that the formula of the various components and mixing, and finally achieve the purpose of refining rubber.
In the continuous operation of the refiner, the rubber from one end of the roller to join continuously, according to the time specified in the rubber refining process repeatedly through the roller several times, from the other end of the roller continuous cutting of the required rubber strip.

3, the rubber material in the open refiner processing, should have what conditions to get good refining effect?
We will discuss from two aspects, namely, from the mechanical point of view and rheological point of view to discuss .

A, from the mechanical point of view to study the conditions of the rubber into the roll distance
In the refining operation, we can see that when the rubber covers a roller after the two rollers there is a certain amount of piling up of rubber between the two rollers, these piling up of rubber is constantly being rotated roller into the roller gap, and the new piling up of rubber and the formation of a continuous. These piles of rubber on the effect of refining is a great influence.
If the pile is too much, too much of the pile of rubber can not enter the roll gap in time, only in situ gently shaking, at this time, the effect of rubber refining decreased significantly.
If the pile of rubber is too little, it can not form a stable and continuous operation.
It can be seen, to determine the appropriate amount of pile of rubber is necessary.

B: from the rheological point of view on the main study
1、How is the extrusion of the glue produced? and the relationship with cross pressure? The rubber material is strongly squeezed and sheared in the roll gap. Extrusion is generated by the rubber material passing through the gradually narrowing roller spacing, and the extrusion pressure increases with the increase of cross pressure.

2, the rubber shear effect is how to produce? And the size of the shear force and who has a relationship?
The shear effect is due to the front and rear rollers have a speed ratio and produce, the greater the speed ratio the greater the shear force.

3、Does the size of the roller pitch have any effect on the shear effect of the rubber and the refining effect?
For the same machine, the speed ratio and roller speed is certain, can be used to reduce the roller distance method to increase the speed gradient, so as to increase the shear effect on the rubber. Such as the thin pass plastic refining of raw rubber, is the reason.

4, the process of rubber refining why cut rubber, turn rubber?
In the refining process, the rubber material will be cut on the refining process is very important. According to the analysis of hydrodynamics, the streamline distribution of rubber in the refining process.