The production of color-printed flat bottom paper bags usually involves roll paper printing, transfer, reloading, and bag making. When these processes are separated, waiting time and alignment difficulty can increase. The RZJD-G450J flat bottom paper bag machine with printing inline connects paper roll unwinding, inline printing, tension control, photoelectric positioning system, creasing, gluing, flat bottom forming, fixed-length cutting, and collection into a continuous workflow. This reduces semi-finished product handling and allows the printed roll paper to enter the bag-forming station directly, providing a more compact process path for batch order production.
The machine adopts a bus-based motion control system and is equipped with servo drives, photoelectric tracking, and web guiding mechanisms to coordinate the printing rhythm with bag-making operations. When the paper runs at a relatively high speed, the system can adjust according to registration marks and changes in the paper path, helping reduce registration deviations, graphic stretching, and fluctuations in forming position. The machine supports multi-color printing and can process commonly used materials such as food-grade greaseproof paper, kraft paper, and coated paper. It is suitable for various flat bottom paper bags, including bakery bags, takeaway bags, and snack and dried food bags.
The intelligent touchscreen interface allows printing and bag-making parameters to be set centrally and stores process data for different products. When changing paper specifications, bag types, or printing layouts, operators can recall the corresponding settings, reducing the impact of repeated adjustment on the production rhythm. Alarm and shutdown functions for material shortage, paper jams, printing deviations, and overload conditions facilitate timely troubleshooting and help prevent non-conforming materials from continuing through the production process. For packaging enterprises handling multi-batch orders for color-printed food paper bags, the machine balances process coordination, changeover organization, and finished product consistency.
About Ruizhi Machinery
Ruizhi Machinery leads the way in eco-friendly packaging solutions, committed to a sustainable and innovative future. With over 20 years of expertise, our paper bag machines are recognized globally for their unmatched efficiency and reliability. Trusted by customers in over 120 countries across Europe, America, Asia, and Africa, our products set the standard for quality and performance. For more information about Ruizhi Machinery, please visit www.mted.com or www.wzruizhi.com
