A Complete Shopping Bag Production Line,
Configured for Your Bag Type.

Yes, in most cases. Because blown film and bag making run as separate offline stages — the film machine produces rolls that are stocked, and the bag machines pull from inventory — a single wide-format blown film machine can supply multiple bag machines running different bag types. The key constraint is film width: the blown film machine must be wide enough to produce the slit widths required by each bag machine. LayerQuestar Machinery can advise on the correct film width and slitting configuration for your specific bag mix.

A T-shirt bag machine (also called a vest bag machine) includes a punch unit that die-cuts the handle opening and side notches in a single stroke after sealing and cutting. A flat bag machine produces a simple bottom-sealed or side-sealed bag with no handle cutout. The two machine types are not interchangeable — a flat bag machine cannot produce T-shirt bags without a separate punching attachment, and a T-shirt machine is not optimised for plain flat bags. If you need both bag types, two separate bag machines are the standard approach.

No. If your customers require unprinted bags — common for supermarket checkout bags, produce bags and basic refuse bags — you can run a two-stage line: blown film machine directly to bag machine, with no printer in between. Adding a flexo printer later is straightforward because the three stages operate offline and independently. Many factories start without a printer and add one when a printed-bag customer is secured.

HDPE produces a stiffer, higher-tensile film at very thin gauges (10–25μm), which gives the T-shirt bag its characteristic crinkle and allows it to carry significant load despite its thin wall. LDPE at the same thickness would be too soft and stretchy to hold its shape as a carrier bag. The trade-off is that HDPE requires a dedicated high-stalk blown film machine with a taller cooling tower — it cannot be run on a standard LDPE machine without significant process adjustments and usually lower output. This is why T-shirt bag lines and flat/handle bag lines use different blown film machine specifications.

The LQ-430×2 dual-line machine produces up to 700 pcs/min combined across both lanes under standard operating conditions. Running 20 hours per day (allowing for changeover and maintenance), this equates to approximately 840,000 bags per day at peak speed. Actual output varies by bag size, film thickness and operator efficiency. Smaller bags at thinner gauges run faster; larger bags with thicker film run slower. Contact LayerQuestar Machinery with your specific bag dimensions for a realistic daily output estimate.

Yes. The LQ-HB-800 is designed as a multi-function platform. Switching between soft-loop, patch-handle, die-cut, drawstring and vest bag configurations requires a tooling changeover — replacing the relevant forming and punching components — rather than replacing the machine. Changeover time varies by handle type. [NEEDS CLIENT VERIFICATION: typical changeover time per style transition.] This makes the LQ-HB-800 well-suited for factories serving multiple retail customers with different bag specifications.

Lead time from order confirmation to factory readiness for shipment is typically 60–90 days for a complete three-stage line, depending on configuration and current production schedule. [NEEDS CLIENT VERIFICATION: confirm current lead times.] Sea freight transit adds 15–35 days depending on destination port. On-site installation and commissioning by LayerQuestar Machinery engineers typically takes 7–14 days after machines arrive at your factory. Total timeline from order to first bag production is typically 90–130 days.

Yes. LayerQuestar Machinery stocks wear parts for all three stages of the line — including sealing wires, punch dies and doctor blades for the bag machine, anilox rollers and plate cylinders for the flexo printer, and screw segments and die components for the blown film machine. Standard wear parts ship from our Zhejiang warehouse within 3 business days. A recommended spare parts kit for the first year of operation is available with every complete line order.