PET Strapping Melt Pump
The PET strapping melt pump serves as the critical link between the extruder and the die head, responsible for the delivery, metering, and stable control of high-temperature PET melt. Its operational stability and metering accuracy directly impact scrap rates and production capacity.
4 Core Functions
Precise Flow Control (Most Critical)
The positive displacement gear drive ensures a strict correlation between flow rate and rotational speed, unaffected by pressure fluctuations! Combined with variable frequency speed control, it keeps the thickness and weight tolerance of the strapping tape within ±1%, significantly reducing scrap rates and maximizing the pass rate 99%.
Stable Pressure to Prevent Defects
Rotation of the extruder screw can easily cause pressure fluctuations, leading to wrinkles, uneven thickness, and rough edges in the strapping band The melt pump buffers these fluctuations, stabilizing die pressure within ±1%, ensuring continuous production without downtime
Energy Efficiency and Increased Capacity
By taking over the high-pressure work from the extruder, it reduces the load on the screw, lowering motor energy consumption by 15%-30%! It also speeds up material discharge, boosting the entire line’s output by 15%–20%—saving on electricity costs and increasing profits
Homogenization for Enhanced Toughness
Gears shear and mix the melt, eliminating temperature and composition inconsistencies. This ensures more thorough mixing of PET molecular chains, resulting in strapping with high tensile strength that resists breakage—even when securing heavy loads
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