Preliminary understanding of rubber calender

Calendering refers to the process of making a rubber compound on a calender to make a film or forming a semi-finished rubber cloth with a skeleton material. It includes the processes of sheeting, bonding, pressing, and fabric glue. The following will take you to have a preliminary understanding of rubber calenders and rubber calender machines.

Here is the content list:

• What is a rubber calender machine?
• What is the working process of the rubber calender?
• What is the essence of the rubber calendar?

What is a rubber calender machine?

The rubber calender machine is one of the basic pieces of equipment in the processing of rubber and plastic products. Among the rubber and plastic machinery, the calender is a heavy-duty and high-precision machine. The basic structure of the rubber calender is very similar to the plastic calender, and the working principle is the same. However, since many rubber products are composite products containing cords and steel wires, the structure of the rubber calender is more complex, with wider applications and more types. The rubber calender machine is mainly used for the pressing of rubber materials, the coating of textiles or steel cords, the lamination of films, the pressing of rubber blanks, and the release film for attaching tire cord layers.

What is the working process of the rubber calender?

The calendering process of rubber is firstly carried out by the open mill to roughen and refine the mixed film, or the pin-type cold feed extruder is fed to the calender. If the product contains fabrics, the fabrics will be dried through the guiding device and sent to the calender after a certain tension. Through the extension and extrusion of the roller of the calender, a film or rubber curtain is made, and then cooled down by cooling, and finally taken up. The same as plastic calendering, the calendering process is mainly the process of rolling the rubber material into a film with a certain thickness and feel through the action of two rollers. This is the main working process of the rubber calender.

What is the essence of the rubber calendar?

On the surface, calendering is just a change in the shape of the rubber compound, but in essence, it is also a fluid flow deformation process. In the calendering process of the rubber calender, the rubber material undergoes viscous flow on the one hand, and elastic deformation on the other hand. The various process phenomena at the start of the rubber calender are related to the fluidity of the rubber compound and also to the viscoelasticity of the rubber compound. The force of rubber in the roll gap is very similar to that of plastic. When the rubber calender is calendering rubber, the power to push the rubber to flow comes from two aspects. One is the roller rotating pull, which is produced by the friction between the rubber and the roller, and its role is to bring the rubber into the roller. The second is the squeezing force of the roller gap on the rubber material, which deforms the rubber material and pushes it forward.

The rubber calender is mainly used for the pressing of rubber materials, the coating of textiles or steel cords, the lamination of films, the pressing of rubber blanks, and the release film for attaching tire cord layers. Qingdao Huicai Machine Manufacture Co., Ltd. has developed a variety of rubber calenders, you can consider using our cost-effective products.