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GDFR-400/450/500/600X2 High Speed Double Lines T-shirt Bag Making Machine - GDFR-400/450/500/600X2 Fully Automatic High Speed Double Lines T-Shirt Bag Making Machine

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GDFR-400/450/500/600X2 High Speed Double Lines T-shirt Bag Making Machine

This GDFR-400/450/500/600X2 double-line biodegradable bag making machine is built for PLA and PBAT compostable films as well as HDPE and LDPE. Independent servo drives control each line's bag length, and the patented hot-cut, hot-seal knife is specifically designed for biodegradable films that otherwise stick to the blade — running at up to 300 pcs/min across four width options.

Max. Bag Width

320mmX2

Producing Length

300-700mm

Max. Producing Speed

300pcs/min

Main Technical Parameters

Model	GDFR-400X2	GDFR-450X2	GDFR-500X2	GDFR-600X2
Max. Bag Width	300 mm × 2	380 mm × 2	450 mm × 2	550 mm × 2
Producing Length	300–700 mm	300–700 mm	300–700 mm	300–700 mm
Max. Producing Speed	300 pcs/min	300 pcs/min	280 pcs/min	280 pcs/min
Film Thickness	0.010–0.040 mm	0.010–0.040 mm	0.010–0.040 mm	0.010–0.040 mm
Suitable Materials	HDPE / LDPE / PLA / PBAT	HDPE / LDPE / PLA / PBAT	HDPE / LDPE / PLA / PBAT	HDPE / LDPE / PLA / PBAT
Total Power	11 kW	11 kW	13 kW	15 kW
Max. Film Roll Diameter	800 mm	800 mm	800 mm	800 mm

Performance and Features

This is a double-line vest-handle T-shirt bag making machine — a newly designed, ultra-high-speed practical model built for biodegradable production. Its exclusive patented hot-cut and hot-seal system processes HDPE, LDPE, PLA, and biodegradable PBAT films, and four bag-width models cover a wide range of bag sizes. The fully automatic workflow includes per-line servo feeding and cylinder-brake tension control on the unwind.

Twin independent servo-driven feeding motors make per-line bag length easy to control.
Multiple automatic alarms with auto-stop protection.
Built-in multi-language HMI: Chinese, English, Spanish, Arabic, Russian, and Turkish.
Patented cutting-and-sealing knife optimized for HDPE, LDPE, PLA, and biodegradable PBAT films.
"Rocking System" keeps the full pile of bags from sticking at the sealed edge.
Inline automatic punching unit with folding device and automatic waste collection.
Automatic unwind tension control via a cylinder-brake system.

Manufacturing Process

From raw film to finished T-shirt bag — unwinding, hot sealing, die cutting and folding in one line

Unwinding

Feeds jumbo film from the unwind stand with tension control and EPC tracking for stable, wrinkle-free material supply.

Hot Sealing & Hot Cutting

Heat-seals the bag body and cuts individual bags in one synchronized pass for clean, strong edges.

Die Cut

Punches the vest-style handle opening and trims the bag profile with a precision die.

Folding

Automatically stacks and folds finished bags for neat collection and downstream packing.

Applications & Industries We Serve

Every Lingfeng plastic bag making machine is built around a real production goal. Below are the most common bag types and industries this equipment serves ?from high-volume retail to specialized, eco-friendly formats. Tell us your application and our engineers will match the right machine configuration.