INTRODUCTION

The FFS (Form-Fill-Seal) bagging machine represents cutting-edge automation technology for granular petrochemical packaging.   Designed for 25kg polymer pellets and resin compounds, this system integrates film forming, precision weighing (±0.2% accuracy), inert gas purging, and hermetic sealing in one continuous operation.   Its servo-driven mechanism achieves 400-600 bags/hour with ATEX-certified explosion-proof options for hazardous environments.

TECHNICAL PARAMETERS

1. Model: PFFS-25CX

2. Capacity: 1000 bags/hour (25kg standard)

3. Weighing System: Loss-in-weight feeder with 0.1% precision

4. Film Type: 150-200μm co-extruded PE/PP with nylon reinforcement

5. Sealing: Dual hot bar cross-seal (160-220°C) + cool seal reinforcement

6. Special Features: Nitrogen purge (<0.5% O₂), dust-proof screw feeder

7. Compliance: ATEX 2014/34/EU, ISO 9001

APPLICATION SCENARIOS

Polymer Production

Polyethylene/PP pellets packaging with anti-static film

Requires moisture control (<0.5% RH via nitrogen flush)

Catalyst Beads

Zeolite molecular sieves needing oxygen-free environment

Specialized metal detection and rejection system

Synthetic Rubber

Carbon-black filled compounds requiring dust containment

Abrasion-resistant film with 70-80℃ heat tolerance

Specialty Chemicals

Flame-retardant additives with corrosive properties

PTFE-coated sealing jaws for chemical resistance

OPERATIONAL MANUAL

Pre-Operation ChecksMount 1000mm-width film roll on servo unwind shaft Thread film through forming collar with 50N tension Calibrate load cells using 25kg test weightsProduction Setup Input bag dimensions (standard 600×900mm) Configure nitrogen flow rate (2-5L/min)Set sealing parameters: • Top seal: 180°C for 1.2sec • Bottom seal: 200°C for 1.5sec

Running Procedure

Automatic film advance → M-fold formation Bottom sealing with batch coding Gravimetric filling via split-gate discharge Top sealing with vacuum extraction Ejection to palletizing conveyor

MAINTENANCE SCHEDULE

Daily:Clean residual particles from weighing hopper Inspect sealing jaw PTFE coatings Verify pneumatic filter moisture traps

Monthly:Replace worn film guide rollers Lubricate chain drives with high-temp grease Calibrate load cells and gas analyzers

TROUBLESHOOTING GUIDE

Irregular Bag Lengths

Cause: Film tensioner pressure fluctuation Solution: Adjust to 0.3-0.5MPa and realign encoder

Weak Seal Strength

Cause: Contaminated sealing surfaces Solution: Clean jaws with isopropyl alcohol

Weighing Drift

Cause: Air cushion instability Solution: Recalibrate load cells and check damper bolts

FREQUENTLY ASKED QUESTIONS

Q1: What film specification prevents granule puncture? A: Minimum 150μm 5-layer film with nylon core (ASTM D882 >35MPa tensile)

Q2: How to handle recycled plastic flakes? A: Add volumetric vibration compactor (optional) for density uniformity

Q3: What's the ROI compared to manual packing? A: Typical payback in 14 months via 75% labor reduction

Q4: How to prevent metal contamination? A: Integrated magnetic separator + metal detector with 0.3mm sensitivity

Q5: Can it run 24/7 continuously? A: Yes, with<1hr day="" maintenance="" window="" mtbf="">2000 hours)