The moisture content of fiber textiles is generally high, such as cotton fabrics up to 7%; rayon is about 12%; nylon and polyester fabrics have lower moisture content, also more than 3%. However, the moisture content requirement of the textile in the rubber calendering process is generally controlled below 1%, otherwise the bonding strength between …
Neoprene is temperature sensitive and has a low roll temperature control range of between 35 and 45 °C. No need for refining, direct feeding after roughing, in order to prevent scorch, full-chloroprene rubber calendering rubber hot conditions. The hot-melt rubber is continuously fed by a special open mill to the calender. The speed of the …
Preparations that must be completed before calendering include: hot-melting and rubber-feeding of rubber materials, dipping and drying of textiles, and heat-stretching of chemical fiber cords. These processes can be carried out independently or in combination with the calendering process. Rubber material heating and rubber supply After long-term parking, the rubber compound has lost its thermoplastic …
It is known from the foregoing discussion that the flow rate of the rubber material passing through the calender roll is very fast. The degree of elastic deformation that occurs is also large. When the rubber leaves the roll gap, it will immediately produce elastic recovery to shrink the film longitudinally, and the thickness of …
The pressure delay is caused by the elastic bending deformation of the roller under the action of the transverse pressure of the rubber material, and the center of the roller axis is offset from the original horizontal position by a certain distance, which is called the deflection of the roller. The deflection causes the thickness …