1，Why can the open mill transform the highly elastic raw rubber into a plastic compound with plasticity?
Plasticizing with the open mill is mainly through the shearing and extrusion effect of two relatively rotating rollers on the rubber material, so that the original macromolecular chain of the rubber material is interrupted, so that the original elasticity of the rubber material is reduced, and the plasticity is improved, which is conducive to the following processing procedures. At present, the main plasticizing methods used are rolled plasticizing and thin pass plasticizing.
2. How to mix the adhesive with various mixtures evenly?
In the rubber refining process, the opening mill mainly relies on two relatively rotating rollers to produce extrusion and shearing action on the rubber, after several kneading, and the chemical action accompanied by the kneading process, the macromolecular chain inside the rubber is broken, so that the various ingredients in the formula are mixed evenly, and finally achieve the purpose of rubber refining. The film discharged from the roll gap is coated on a roll due to the difference in the surface speed and temperature of the two rollers, and is returned to the two rollers, so that many reciprocations are completed. When plasticizing, the molecular chain of rubber becomes shorter from long, and the elasticity becomes smaller from large; During mixing, the surface of each component of the compound is constantly updated and evenly mixed. In the intermittent operation of the mill, after feeding the rubber material repeatedly through the roller distance several times, and finally cut the sheet.
In the open mill used for continuous operation, the rubber material is continuously added from one end of the roller, repeated through the roller several times according to the time specified in the rubber mixing process, and the required rubber strip is continuously cut from the other end of the roller.
