What are the preparation procedures before mixing?

1.The quality inspection of raw materials and compounds, raw gums and compounds used in actual production must meet the requirements of the specified quality grade technical index. Raw materials in the long-term storage and transportation process, quality problems may occur; The quality of raw materials will vary from manufacturer to manufacturer, so it is necessary to test the quality of raw materials in accordance with regulations before use.

2. Complementary processing of the complex The complementary processing of the complex includes the grinding, drying and screening of the solid complex, the melting and filtration of the low melting point solid complex, and the heating dehydration and filtration of the liquid complex.

3. The pre-prepared ointment can make the compound easy to be mixed and dispersed in the compound, reduce the environmental pollution caused by flying loss, and ensure the mixing quality of the compound; Some compounds which are difficult to mix evenly in a short time and generate more heat and energy consumption can be processed into master rubber under normal mixing conditions. The most common promoter mother rubber, carbon black mother rubber, chemical plastic solution mother rubber and so on.

4. Weighing and matching the raw materials used for mixing compound shall be weighed and matched in accordance with the varieties, specifications and quantities of raw glue and compound prescribed in the formula. Weighing and operation must be meticulous, accurate, not leaking, good.