The PMB equipment production process follows standardized steps. Temperature, time, and rotation speed control at each step directly impact product quality. The core process is divided into seven stages, all precisely controlled by an automated system:
Step 1: Base Asphalt Heating. Asphalt in the base asphalt storage tank is pumped and heated to a process temperature of 170℃-190℃ to ensure the asphalt's fluidity and compatibility with the polymer.

Step 2: Precise Polymer Feeding. Pre-weighed polymer raw materials are fed into the feeding unit according to the formula. The feed is then conveyed to the heated asphalt stream via a screw conveyor or similar equipment. The feeding amount is precisely controlled by the automated system.
Step 3: High-Speed ​​Shear Mixing. Asphalt and polymer enter a high-speed shear mixer. High-speed shearing achieves initial mixing, allowing the polymer to initially swell and disperse in the asphalt, preparing for subsequent homogenization.
Step 4: Quantitative Additive Addition. According to product requirements, stabilizers, anti-stripping agents, and other additives are quantitatively added to the mixture. The addition process is synchronized with the mixing process to ensure uniform dispersion of the additives.
Step 5: Homogenization with Colloid Mill The mixture is fed into a colloid mill/homogenizer for high-speed grinding to completely eliminate polymer agglomerates and achieve micron-level uniform mixing. This step is crucial for ensuring the performance of the modified asphalt.
Step 6: Finished Product Quality Inspection Samples are taken from the homogenized mixture and tested according to international standards such as ASTM, IS, and AASHTO for core indicators such as penetration, softening point, elastic recovery, and storage stability. Only after passing the tests can the next step be carried out.
Step 7: Finished Product Storage and Transportation The qualified modified asphalt is pumped to a finished product storage tank and stored at a constant temperature of 160℃-190℃. During storage, it is stirred for approximately 10 minutes every hour to prevent clumping. Depending on customer requirements, it is transported to the construction site by tanker truck or drum.