Blown Film Machine Four-Stage Maintenance
1. Introducing
Your blown film machine runs at high temperatures under continuous mechanical stress. Without regular care, small problems grow into expensive breakdowns. Downtime means lost production hours, wasted raw material, and delayed customer orders.
This guide applies to both 1300 PE double winding machines (single‑layer, dual‑shaft winder) and ABA co‑extrusion blown film machines (two extruders, three‑layer A‑B‑A structure). Follow the daily, weekly, monthly and quarterly tasks described here. You will produce better film, reduce waste and protect your investment.
2. Maintenance Frequency Summary
| Maintenance Type | Time Required | Key Focus |
| Daily | 10–15 min | Visual inspection, die head cleaning, heater check, screw purge |
| Weekly | 30–60 min | Lubrication, screw/barrel wear, belt tension, air ring cleaning |
| Monthly | 2–3 hours | Sensor calibration, screen pack change, die head inspection, gearbox oil |
| Annual | Full day | Major overhaul, screw/barrel removal, gearbox inspection |
3. Daily Maintenance (10–15 minutes per shift)
Do these tasks at the start or end of each shift. They take little time but prevent most everyday issues.
4. Weekly Maintenance (30–60 minutes)
Weekly tasks go deeper. You inspect parts that wear gradually and adjust components that affect film quality.
5. Monthly Maintenance (2–3 hours)
Monthly tasks focus on calibration and inspection of core components.
6. Annual Major Overhaul (Full day)
Once a year, fully disassemble major components for thorough cleaning and hidden damage inspection.
- Remove the screw and barrel. Check for hard‑to‑see cracks, scoring or uneven wear.
- Inspect the gearbox internally. Replace bearings and seals as needed.
- Check the winder shafts for runout.
- Replace aged heater bands and thermocouples.
- Plan this overhaul during scheduled downtime or holiday breaks.
- A thorough annual overhaul can extend total machine lifespan to 10–15 years or more.
7. Common Film Defects and Prevention
| Defect | Likely Cause | Preventive Maintenance Task |
| Uneven thickness | Air ring imbalance or die lip contamination | Daily air ring cleaning; weekly airflow check |
| Gel spots (fisheyes) | Residue in screw or die head; clogged screen pack | Daily screw purge; monthly screen pack replacement |
| Film breaks or tears | Worn die head; uneven roller pressure | Monthly die head inspection; weekly roller alignment |
| Poor transparency | Barrel or die temperature too low | Daily temperature monitoring; monthly sensor calibration |
| Wrinkles on film | Misaligned rollers or poor winding tension | Quarterly alignment; monthly winder check |
| Bubble wobble | Uneven air flow from air ring | Weekly air ring cleaning; check for air leaks |
| Rough surface | Die lip contamination; low extruder temperature | Daily die cleaning; verify all heating zones work |
8. How Proper Maintenance Benefits Your Business
A well‑maintained blown film machine keeps your business profitable in three ways:
Your customers receive uniform product batch after batch. No uneven thickness, rough surfaces or fisheyes.
Preventive maintenance cuts unplanned stops significantly. You meet delivery dates reliably.
Clean heating bands, calibrated sensors and proper lubrication reduce electricity use and wear.
9. Related Resources
Discover our equipment:
- [1300 PE Double Winding Blown Film Machine] – Single‑layer extruder with dual winding stations for continuous high‑volume production
- [ABA Co‑extrusion Blown Film Machine] – Two‑extruder system for three‑layer A‑B‑A film, maximizing recycled material usage
- [High‑Speed T‑Shirt Bag Making Machine] – Convert blown film into finished vest bags
- [Plastic Film Recycling Pelletizing Machine] – Transform post‑industrial waste into pellets for the ABA middle layer
Keep learning:
- Read [What Is a 1300 PE Double Winding Blown Film Machine?] – Complete guide to double winding technology
- Compare [1300 PE Double Winding vs. ABA Blown Film Machine] – Which extrusion technology fits your production?
* This maintenance guide applies to 1300 PE double winding blown film machines and ABA co‑extrusion blown film machines. For other models, consult your machine manual or contact our support team。
