The LQ-430×2 is a dual-line high-speed automatic T-shirt bag making machine built for continuous, high-volume production of vest-type (T-shirt) bags and flat bags. Two independent production lines run simultaneously on a single machine footprint, delivering a combined output of up to 700 bags per minute — approximately 336,000 bags per 8-hour shift at standard operating efficiency.
The machine integrates film feeding, heat sealing, cutting, handle punching, and conveyor discharge into a single automated workflow. Dual servo motors with PLC control and photoelectric eye registration ensure precise bag length consistency and accurate print alignment on pre-printed film. A swing-type discharge system with bag bottom shaping produces neatly stacked, well-aligned finished bags ready for immediate packaging.
Compatible with HDPE, LDPE, and LLDPE films from 10 to 25 microns, the LQ-430×2 covers the full range from thin supermarket grocery bags to medium-duty retail vest carriers. Maximum bag width is 400mm per line (15.75"), with a maximum length of 650mm (25.6") — suitable for standard grocery T-shirt bags through to medium shopping bags.
Core engineering decisions that determine output consistency, precision and long-term running cost.
Two independent production lines on one machine footprint deliver up to 700 bags per minute combined — doubling throughput without doubling floor space.
Dual servo drives with PLC control enable automatic bag length adjustment, eliminating manual setup and reducing changeover time between size runs.
Optical sensors detect print registration marks on pre-printed film, ensuring each bag is cut at the correct position for accurate logo and graphic alignment.
Handle cutouts are produced inline with automatic waste collection via conveyor belt — no secondary punching operation required, no manual waste removal.
Swing-type output system combined with bottom shaping produces flat, neatly stacked bags with consistent punching position, ready for direct packaging.
The sealing blade uses independent current heating with a high-precision temperature controller, maintaining consistent seal quality across the full 10–25μm film thickness range.
Feeding, sealing, cutting, punching, folding, and conveying are completed in a single continuous pass — minimising operator intervention and labour cost per 1,000 bags.
Confirmed output types for this machine configuration. Actual results depend on film specification and tooling selection.
Not sure if this machine covers your specific product? Send us your sample or drawing
All specifications are under standard operating conditions and may vary depending on film material, bag size and configuration.
| Model Number | LQ-430×2 |
|---|---|
| Total Power | 18.5 kW |
| Machine Weight | 2,700 kg |
| Cut Type | Cold Cut |
| Lines / Channels | 2 |
| Max Bag Width | 400 mm |
| Speed | 200 pcs/min × 2 |
| Film Thickness | 10–50 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-430×2. For configuration-specific questions, contact our engineering team directly.
The LQ-430×2 produces up to 350 bags per minute on each of its two lines, for a combined maximum output of 700 bags per minute. At 80% operating efficiency over an 8-hour shift, this equates to approximately 336,000 finished bags per shift.
The machine produces T-shirt (vest) bags and flat bottom-sealed bags. T-shirt bags use the integrated auto-punching unit for handle cutouts. Flat bags are produced with the punching unit disengaged, making the machine suitable for both grocery carrier bags and general-purpose poly bags.
The LQ-430×2 processes HDPE, LDPE, and LLDPE films in thicknesses from 0.010mm to 0.025mm (10–25 microns). HDPE at 12–18μm is typical for lightweight supermarket bags; LDPE and LLDPE at 20–25μm suit thicker retail carrier bags requiring higher tear resistance.
Maximum bag width is 400mm (15.75 inches) per line and maximum bag length is 650mm (25.6 inches). This covers standard grocery T-shirt bags (typically 260–300mm wide) through to medium-sized retail shopping bags.
Yes. The photoelectric eye tracking system detects registration marks on pre-printed film and automatically adjusts the feed length to align each cut with the correct print position, ensuring consistent graphic placement on every finished bag.
The fully automated feeding, punching, and discharge systems minimise manual handling. Typical operation requires 1–2 operators per shift for film roll loading, output monitoring, and periodic maintenance.
Main motor is 3.7 kW. Machine footprint is 5400 × 1850mm with a height of 1500mm. Power supply is typically 380V / 3-phase / 50Hz for this machine class.
The LQ-430×2 accepts pre-wound film rolls and operates as a standalone downstream unit. It is commonly positioned after a blown film extrusion line and optional flexographic printer in a complete bag production workflow. LayerQuestar supplies all three machine types as part of a turnkey line.
Send us your bag size, output target and film spec — LayerQuestar will respond within 4 business hours.