Garment Packaging Bag Making Machine is an automatic bag-making equipment specially for producing plastic packaging bags for garments. It is compatible with OPP, BOPP and other film materials, and can complete unwinding, heat sealing, hot cutting and self-adhesive tape sticking in one process. The finished bags are smooth and firm, widely used for packaging clothes, underwear, shoes and hats.
Core Technical Difficulties of Side Sealing Bag Making Machine
1. Difficulty in film tension and web synchronization control
BOPP and OPP films are thin and prone to static electricity. They are easy to stretch, wrinkle and deviate at high speed. The main challenge is real-time speed synchronization among unwinding, traction, sealing, cutting and adhesive attaching. Tension fluctuation causes bag length error and crooked seal edges. EPC edge correction and constant tension system are required. Low-end machines suffer severe film shaking and high waste rate at high speed.
2. Difficulty in synchronous lamination of self-adhesive strips (key pain point for OPP self-adhesive bag buyers)
The adhesive applicator must be synchronized with film feeding and sealing-cutting in millisecond precision. Common defects include offset adhesive strip, broken glue, air bubbles and inconsistent glue position. The pressure, tension and roller parallelism directly affect the finished quality. This is the most frequent failure point on low-cost side sealing machines.
3. Cooperative control of temperature and pressure for heat sealing & hot cutting
Uneven temperature on sealing blades leads to partial weak sealing. Over-temperature burns OPP film and causes stringing on cutting edge, while low temperature results in peelable seams. The core difficulty lies in dynamic matching of temperature, pressure and sealing duration. The PID system needs quick adaptation when switching film thickness or changing running speed, to guarantee consistent seal strength and clean cutting edge.
4. Photoelectric color mark tracking for printed films
Variable background color, low contrast marks and film stretching interfere with sensor reading. The machine must rapidly correct cutting position during high-speed running to keep patterns aligned. It shall stop and alarm once color marks are missing to avoid mass defective bags. Cheap machines have tracking delay and high pattern offset rate.
5. Timing & mechanical coordination of multiple modules
When equipped with adhesive attaching, pneumatic hole punching, counting and stacking units, precise timing control is essential. Improper punching timing damages sealing edges. Mechanical vibration from different modules brings accumulated errors during long continuous running, requiring rigid machine frame and advanced servo synchronization algorithm.
6. Material adaptability across different films
Customers frequently switch OPP, BOPP, biodegradable and recycled films of different gauges. These films vary greatly in melting point and stretch property. The machine needs wide adjustable range for tension, temperature and adhesive parameters. Simple models take long time for material changeover and rely heavily on experienced operators.
| Model | RQL-400 | RQL-500 | RQL-600 | RQL-700 | RQL-800 | RQL-900 |
| Length of finished product | 30-380 | 30-480 | 60-580 | 70-680 | 80-780 | 90-880 |
| Width of finished product | 25-500 | 45-600 | 50-600 | 50-600 | 55-600 | 60-600 |
| Speed of Bag-making | 30-240 | |||||
| Accuracy of finished product | ±0.3 | |||||
| Total power | 3.5 | 3.5 | 4 | 4.5 | 5 | 6 |
| Weight | 600 | 700 | 800 | 900 | 1000 | 1100 |
| Dimension(mm) | 3500*900*1300 | 3500*1000*1300 | 3500*1100*1300 | 3500*1200*1300 | 3500*1300*1300 | 3500*1400*1300 |
The machine is packed with PE stretch film for full wrapping and secured on wooden pallets. This packaging method offers reliable protection against dust, surface scratches and minor collisions throughout storage and transit, keeping both the machine's exterior and key internal components in good condition.
Every handling step, from in‑factory warehousing, forklift transfer and truck loading to container sealing, strictly follows heavy‑duty equipment shipping standards. Together with vehicle‑mounted fixing fittings, the packaging greatly reduces vibration and shock damage caused by bumpy transportation.
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