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Calendering, under the action of friction on the surface of the rollers, the rubber material is brought into the roll gap and by the action of the roller pressure to produce flow and deformation. As the roller pressure on the rubber material is with the roller gap cross-section along the flow direction of the deformation and change, so the rubber material flow speed distribution state is also with the roller surface of different positions and different.
Usually, the flow of rubber material has two states, these two states by the calendering of a pair of roller rotation speed to determine: First, when the two roller rotation speed is equal, the rubber material to the roller gap movement, the thickness of the rubber layer gradually become smaller. Second, when the rotation speed of the two rollers are not equal, the linear velocity of the rubber material at each point is not equal. The intermediate layer speed maximum to the rotational speed of the roller side of the large close, and with different positions and the recurrence of change, in the roller gap at the minimum speed gradient is maximum.
Usually, the flow of rubber material has two states, these two states by the calendering of a pair of roller rotation speed to determine: First, when the two roller rotation speed is equal, the rubber material to the roller gap movement, the thickness of the rubber layer gradually become smaller. Second, when the rotation speed of the two rollers are not equal, the linear velocity of the rubber material at each point is not equal. The intermediate layer speed maximum to the rotational speed of the roller side of the large close, and with different positions and the recurrence of change, in the roller gap at the minimum speed gradient is maximum.
