JBD Factory Acceptance‑Test (FAT) Verification Items for Film‑Lines Equipped with Melt‑Pump & Static‑Mixer

Per Qingdao JBD Machinery standard export‑contract FAT protocols for new film extrusion lines with this optional package, these test items are mandatory during 48‑72 h full‑load factory testing:

1. Record melt‑pump inlet / outlet pressure data continuously; confirm outlet‑pressure fluctuation ≤ ±1 % under full rated film‑line throughput.
2. Sample finished film web at 30‑minute intervals for multi‑point thickness‑measurement across web width, document thickness‑deviation statistics.
3. Visual inspection: Check film surface for streaks, colour‑variation, gel‑spot count when running master‑batch coloured resin and PCR‑blend material.
4. Verify full‑system PLC interlock logic: pump over‑pressure alarm, low‑inlet‑pressure protective‑trip linked to extruder screw‑speed adjustment.
5. Archive complete FAT production‑log data including pump‑RPM, pressure traces, temperature profiles as part of customer‑delivered documentation package.

Cost‑Benefit Decision Guidance for Film Manufacturers

• Strong candidate for upgrade / OEM option: High‑precision thin‑film, food‑packaging film, biodegradable PLA/PBAT film, large‑width agricultural film, lines processing high volumes of PCR recycled / colour‑filled compounds; 24‑hour continuous‑operation plants where scrap loss and component‑wear create large‑scale economic impact.
• Lower‑priority: Very simple low‑grade film with loose thickness‑tolerance requirements, short‑batch intermittent‑run production where capital payback period becomes extended.

JBD practical recommendation: When ordering brand‑new film extrusion equipment, specify melt‑pump plus static‑mixer as original‑factory option, fully validated during FAT. Retrofitting onto older third‑party film lines is also feasible but requires careful re‑engineering of melt piping, control‑system modification and on‑site process tuning.

Conclusion

For plastic‑film extrusion production, pairing a precision melt‑gear pump with inline static‑mixer creates synergistic performance gains far greater than installing only one of the two components. The combined solution delivers tighter film‑thickness tolerance, reduced scrap‑rates, higher sustainable throughput, improved tolerance for PCR‑recycled / colour‑modified raw‑materials, extended extruder wear‑part service‑life, moderate energy‑savings and enhanced closed‑loop process controllability. It is especially valuable for optical‑grade, food‑contact, biodegradable and large‑width agricultural‑film applications.

Plant operators should be mindful of extra capital expense, minor added melt‑residence‑time and routine maintenance obligations. When purchasing new‑build film extrusion lines from qualified manufacturers such as Qingdao JBD Machinery (www.jbdmachinery.com), select this package as factory‑integrated option with performance verified in formal 48‑72‑hour full‑load FAT testing, to realise maximum return‑on‑investment from this key melt‑processing upgrade.