The LQ-500×2 is a dual-line automatic hot-cut T-shirt bag making machine that runs two independent production streams simultaneously from a single machine frame. Each line handles bags up to 450 mm wide and 650 mm long, covering the full standard range of grocery, retail, and food-service vest carrier bags.
Each line is driven by its own servo motor and controlled through a shared PLC system with LCD display. Photoelectric eye tracking enables accurate cut registration on pre-printed film. The integrated automatic punching and folding unit produces handle openings in-line, while the swing-type discharge system with bag-bottom shaping delivers neatly stacked finished bags ready for bundling — no secondary handling required.
At 210 pcs/min per line, the LQ-500×2 delivers a combined output of 420 bags per minute. Running a single 8-hour shift at 80% efficiency produces approximately 100,000 finished bags — roughly double the output of a single-line machine within the same floor footprint.
Core engineering decisions that determine output consistency, precision and long-term running cost.
Each production line runs its own servo motor, allowing independent bag length settings on both lines and holding length deviation within ±1 mm.
Two simultaneous production lines deliver up to 420 finished bags per minute — doubling throughput versus a single-line machine on the same floor footprint.
Full-process automation across both lines — feeding, sealing, cutting, punching, and conveying — managed from a single PLC interface with LCD display.
Optical registration sensor on each line detects print marks on pre-printed film, ensuring every cut aligns with the graphic layout regardless of speed.
Handle holes are punched and bags folded in-line during production. No secondary punching station required.
Finished bags from both lines are bottom-shaped and discharged via swing mechanism into neat, aligned stacks ready for bundling.
Each cutting blade uses a dedicated heating circuit with precision temperature controller, enabling fast switches between HDPE and LDPE film grades without full-system recalibration.
Each line handles bags from 200 mm up to 450 mm wide and up to 650 mm long, covering convenience-store vest bags through large grocery carriers.
Confirmed output types for this machine configuration. Actual results depend on film specification and tooling selection.
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All specifications are under standard operating conditions and may vary depending on film material, bag size and configuration.
| Model Number | LQ-500×2 |
|---|---|
| Total Power | 8-12 kw |
| Machine Weight | 2,700 kg |
| Cut Type | Hot Cut |
| Lines / Channels | 2 |
| Max Bag Width | 450 mm |
| Speed | 420 pcs/min |
| Film Thickness | 0.010–0.025 mm（10–25 µm） |
| Materials | HDPE, LDPE, LLDPE |
Specifications subject to change without notice. Contact LayerQuestar for the latest confirmed datasheet for this model.
Common questions about the LQ-500×2. For configuration-specific questions, contact our engineering team directly.
The LQ-500×2 runs two independent lines at up to 210 bags per minute each, for a combined maximum of 420 bags per minute. At 80% operational efficiency over an 8-hour shift, this produces approximately 100,000 finished bags per shift.
Each line produces bags up to 450 mm (17.7") wide and 650 mm (25.6") long, covering the full standard range of T-shirt and vest carrier bags used in grocery, retail, and food service.
The machine processes film from 0.010 mm to 0.025 mm (10–25 microns). The lower end suits ultra-thin HDPE singlet bags; the upper end covers standard to medium-duty LDPE and LLDPE retail bags.
Yes. Each line has an independent servo motor and PLC length setting, so both lines can be configured for different bag lengths simultaneously within the machine's size range.
The LQ-500×2 is designed for T-shirt (vest carrier) bags as its primary output. With the punching unit disengaged, it also produces flat bottom-sealed poly bags for produce, food packaging, or industrial use.
Yes. Each line is equipped with a photoelectric eye tracking system that reads registration marks on pre-printed film rolls and automatically adjusts the cut position to maintain consistent print alignment on every bag.
The LQ-500×2 produces approximately twice the output of a single-line machine while occupying only marginally more floor space (5500 × 1800 mm versus a typical single-line footprint of 5500 × 1200 mm). It is the natural upgrade path for converters whose single-line capacity is the production bottleneck.
LayerQuestar provides a 12-month standard warranty on the machine, plus lifelong after-sales support covering remote troubleshooting, spare parts supply, on-site technical service, and operator training.
Send us your bag size, output target and film spec — LayerQuestar will respond within 4 business hours.