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What is the production process of rubber conveyor belts?

Sep 04, 2019

Different types of conveyor belts have different application scenarios. Rubber conveyor belts are widely used in cement, chemical, steel and other industries. There are also many differences in the production materials and processes used in different quality rubber conveyor belts.

Rubber conveyor belt process: drying → plasticating → refining → mixing → parking → hot refining → calendering → forming → vulcanization → packaging. Unlike the non-nylon skeleton conveyor belt, the nylon layered flame retardant conveyor belt production process is subjected to secondary stretching and setting treatment after vulcanization. There are two main methods for secondary stretching and setting, one is the cooling setting method under the in-mold pressure (hereinafter referred to as in-mold setting), and the other is the extra-die stretching cooling setting method (hereinafter referred to as the external molding). The in-mold setting method is simple and the shaping effect is good. However, this method can be used in large size and low in production efficiency. In contrast, the external molding method requires a set of stretching devices, but the quality of the product is reliable and the production efficiency is high, which is suitable for mass production.

In addition, the rubber core cloth surface layer is used for dipping, which can increase the adhesion between the surface layer of the rubber conveyor core cloth and the rubber layer. The core cloth is resistant to high temperature and corrosion, and the inner layer of the core cloth is not required. Dipping, reducing the amount of glue used, saving the user's ordering cost. The inner layer of the rubber conveyor belt and the surface layer are made of the same material. The surface layer is first dipped, the vulcanization effect is good, and the adhesion between the surface layer and the inner layer is good. High, product softness, good groove, long product life cycle.

It is necessary to grasp the nature of vulcanization and factors affecting the vulcanization of rubber conveyor belts, as well as the determination and implementation of vulcanization conditions for rubber conveyor belts, in which vulcanization is the crosslinking of linear macromolecules of rubber at a certain temperature, time and pressure. The process of forming a three-dimensional network structure, vulcanization reduces the plasticity of the rubber, increases the elasticity, greatly increases the ability to resist external force deformation, and improves other physical and chemical properties, making the rubber an engineering material with useful value.