Plastic Bag Making Machines
for Every Bag Type You Produce

A servo-driven machine uses a servo motor with closed-loop position feedback to control the film feed and cutting cycle. This gives precise, repeatable bag length accuracy — typically within ±1mm — and allows the machine to run at higher speeds with lower film waste. Servo systems are the preferred choice for high-volume production and for bags with printed registration marks.

A VFD (variable frequency drive) machine uses an AC induction motor with variable speed control. It is mechanically simpler, lower in upfront cost, and well-suited to plain-film bags where absolute length precision is less critical. LayerQuestar offers both drive options across the bag making range — the right choice depends on your output target, bag type and budget.

Yes. LayerQuestar bag making machines are sold as standalone equipment and can be integrated with any existing film roll supply. If you are already purchasing PE film rolls from a supplier, you can purchase a bag making machine independently and begin production immediately.

If you later decide to bring film production in-house, a LayerQuestar blown film machine can be added upstream without requiring any modification to the bag making line.

Three hardware specifications matter most when comparing machines at similar price points:

1. Drive system brand and type. Confirm whether the servo motor is a recognised brand (e.g. Delta, Panasonic, Yaskawa) or a generic unit. The servo motor directly affects bag length accuracy and long-term reliability.

2. Sealing bar material and construction. The sealing element should be made from hardened alloy with replaceable sealing wire. Ask how long the sealing bar lasts under continuous production and whether replacement parts are stocked.

3. Control system. Confirm whether the PLC and HMI are branded components (e.g. Siemens, Mitsubishi, Delta) and whether the interface is available in English. A well-documented control system reduces commissioning time and makes remote troubleshooting significantly easier.

Most LayerQuestar bag making machines can be operated by 1–2 people per shift under normal production conditions. A single operator handles machine monitoring, film roll changes and parameter adjustments. A second person is typically assigned to output collection, counting and packing — particularly on high-speed dual-lane models.

Exact staffing depends on the machine type, output speed and whether downstream packing is automated or manual.

A C-fold machine (such as the LQ-GB-1000 / LQ-GB-1200) folds the film into a C-shape before sealing and rolling. The resulting bag has a flat bottom seal and is rolled into a compact dispensing roll — the standard format for supermarket shelf bin liners.

A star-seal machine (such as the LQ-GB2L-350) forms the bag bottom by sealing the film in a radial star pattern. This distributes stress evenly across the base, making the bag significantly more resistant to puncture and leakage — the preferred format for kitchen waste, food scraps and heavier-duty applications. Star-seal bags are also rolled for dispensing.

If your target market is standard household bin liners for retail, C-fold is the more common format. If your buyers prioritise bag strength and leak resistance, star-seal is the better choice.

Accepted film thickness varies by machine type. As a general reference across the LayerQuestar range:

T-shirt / vest bag machines: typically 0.008–0.04 mm (8–40 µm)
Courier bag machines: typically 0.04–0.16 mm (40–160 µm)
Garbage bag machines (C-fold / star-seal): typically 0.008–0.04 mm (8–40 µm)
Drawstring bag machines: HDPE 0.007–0.02 mm / LDPE 0.02–0.05 mm
Continuous roll bag machines (LQ-CRB): 0.008–0.025 mm (8–25 µm)

Always confirm the specific thickness range for the model you are evaluating, as it varies by machine series and configuration.

Yes. LayerQuestar provides remote commissioning support via video call, email and WhatsApp for all machine types. Step-by-step installation documentation and wiring diagrams are supplied with every machine, with all labelling in English.

On-site commissioning visits are available for customers who require in-person installation support or operator training. Contact us to discuss your location and requirements.

The LQ-GB2L-350 star-seal garbage bag machine carries a 3-year parts warranty. Warranty terms for other models in the range are 12 months on parts, with lifelong after-sales service covering repair support, technical consultation and operator training.

Wear consumables — sealing wire, cutting blades, belts — are not covered under warranty as they are subject to normal production wear. LayerQuestar stocks these parts for rapid dispatch. Contact us for specific warranty terms on the model you are considering.