1. At the material level

Fluctuations in material viscosity, fluctuating temperatures, and changes in melt flowability directly drive pressure fluctuations

2. At the equipment level

Long term wear of gears, increased fit clearance, increased internal leakage, and decreased voltage stabilization effect

3. Process level

Upstream feeding is intermittent, extrusion screw discharge fluctuates, and pressure oscillates synchronously

4. system level

Filter blockage increases resistance, and pipeline and valve failures interfere with the pressure balance of the entire production line

5. Control level

Unreasonable pressure value setting and inconsistent matching of various operating parameters

Efficient solution approach

Stabilize material temperature+ensure uniform feeding+regularly inspect equipment+fine tune parameters

By doing a good job in control, the precise measurement and stable pressure conveying of the melt pump can be fully utilized, reducing the scrap rate and making production more stable.