Dual Tracking Four-Line Cold Cutting

This state-of-the-art equipment is a fully automatic Four-Line (4 Lines) High-Speed Cold Cutting Bag Making Machine, specifically engineered for the mass production of plastic flat bags and T-shirt (vest) bags. Designed for 24/7 industrial operation, this machine utilizes advanced heat-sealing and cold-cutting technology to ensure clean edges and strong seals without deformation. It is capable of processing a wide range of materials, including HDPE, LDPE, and biodegradable eco-friendly films (PLA/PBAT), making it a versatile solution for supermarkets, retail packaging, and garbage bag production .

Key Features & Benefits

High-Efficiency 4-Line Production: The machine features a 4-line simultaneous production system, dramatically increasing output capacity (typically 100–200 PCS/min per line) while saving valuable floor space compared to multiple single-line units .

Precise Heat-Sealing & Cold Cutting: Utilizing a "heat sealing and cold cutting" mechanism, the machine ensures the bag bottom is firmly sealed via heating, while the cutting is performed by a cold blade. This method prevents the edges from fusing together and produces a smooth, burr-free finish, ensuring high bag quality.

Advanced Servo Drive System: Equipped with high-precision servo motors (or step motors) for feeding, this system ensures accurate bag length control (error margin ≤ ±1mm), stable operation at high speeds, and reduced energy consumption .

Intelligent PLC Control: A user-friendly PLC touch screen interface allows for easy adjustment of bag length, production speed, batch counting, and automatic alarm functions. It integrates seamlessly with a photoelectric eye (color mark tracker) for accurately cutting pre-printed bags.

Robust Construction: Built with a heavy-duty steel frame, the machine maintains stability even at maximum speeds, minimizing vibration and ensuring the longevity of sealing and cutting components.

Integrated Auto Punching (Optional): Many models offer an optional automatic punching device that can punch handles or holes in the bags during the production cycle, creating a finished product ready for use.