This stage is responsible for the high-precision, automated weighing and distribution of all raw materials. Based on the formula, the system uses precision sensors and conveying pipes to accurately weigh materials like carbon black, calcium powder, oil, and raw rubber, ensuring zero error in ratios and automatically feeding the internal mixer to guarantee consistency in every batch.

This is the core process of compounding, usually completed in a closed internal mixer. After the system feeds raw materials in sequence, high-intensity shearing, extrusion, and friction generated by the rotors quickly achieve uniform dispersion of all components under high temperature and pressure. The process is precisely controlled by temperature, time, or energy, followed by automatic discharge.

This process aims to improve the purity of the compound. The material is forced through a high-mesh metal filter, effectively removing micro-gels, sand, and undispersed lumps, ensuring a defect-free product that meets high-quality requirements.

The filtered compound returns to the open mill for finishing. By precisely adjusting the roll gap, the compound is calendered into continuous sheets of uniform thickness and smooth surface. An anti-adhesive agent is applied simultaneously to prevent sticking, resulting in standard sheets suitable for cooling and storage.

Hot rubber sheets enter the cooling line for shaping and deep cooling. After immersion in anti-adhesive agents, sheets are thoroughly cooled by multi-layer powerful air cooling devices to below safe storage temperature, then automatically cut and stacked.

Quality testing runs through the entire production process. Samples from every batch are taken for rapid testing of Mooney viscosity and curing characteristics, along with regular physical and mechanical property tests. All data is used to monitor quality and guide process adjustments.

Cooled sheets need to be stored in the warehouse for a specified time (usually 24-72 hours). This process, known as "maturation," allows internal stresses to relax and compounding agents to diffuse further, stabilizing physical properties and improving subsequent processability.

As the final stage, we use standardized packaging to prevent deformation and sticking. Each batch includes a unique tracking code for full traceability. Our temperature-controlled warehouse, FIFO system, and dedicated transport ensure precise delivery with full inspection reports.