Based on your understanding of the highly temperature-sensitive characteristics of plastics such as PVC, POM, and PET, degradation can be prevented through multi-dimensional precise temperature control:
Precisely Matching Temperature Control Ranges: Strictly set temperatures according to the safe temperature ranges of sensitive materials: PVC at 160~180℃, POM at 190~220℃, and PET at 250~270℃. Overheating is strictly prohibited.
Zoned Precise Temperature Control: Employ a multi-zone independent temperature control system, with each point equipped with an independent sensor, controlling temperature fluctuations within ±1℃ to prevent degradation caused by localized hot spots.
Shortening Melt Residence Time: Optimize the runner structure to reduce dead zones and prevent the melt from lingering in high-temperature areas for extended periods, reducing the risk of thermal degradation from the process perspective.
Supportive Operation and Maintenance: Regularly calibrate temperature sensors, use a stepped heating method during startup, and promptly empty residual melt from the runner after shutdown to prevent the accumulation of overheated decomposition products. This solution can completely avoid the risk of thermal degradation of sensitive materials and ensure stable injection molding production.
