The G450J flat bottom paper bag machine with printing inline is developed to meet the branding production requirements of large-size flat bottom paper bags. By integrating printing and bag-making processes within the same production system, the machine enables roll paper to complete a continuous workflow from graphic printing to paper bag forming. The design reduces the connection and material transfer stages between printing equipment and bag-making equipment in traditional production, making the production process more centralized and stable. The system is compatible with natural color roll paper as well as pre-printed roll paper materials, making it suitable for continuous production of large-size paper bags for industries such as food, agricultural supplies, and daily consumer goods, while meeting the growing demand for both practical functionality and brand presentation in packaging products.
In terms of coordinated control between printing and bag making, the machine continuously monitors printed marks through a pattern recognition and positioning system, ensuring stable alignment between printed graphics and the cutting and forming positions. When deviations are detected, the system automatically enters a protective mode to reduce material loss and maintain finished bag consistency. The printing unit adopts a dedicated design for ink circulation and ink distribution structures, allowing large-format paper materials to maintain uniform ink layer distribution and clear graphic presentation during continuous printing. In the bag-making stage, bottom sealing is managed through a segmented gluing structure, ensuring more stable bonding while avoiding unnecessary adhesive consumption.
In terms of application and operating performance, the large-size flat bottom paper bags produced by the machine feature neat bag shapes and complete graphic presentation, with structural strength capable of meeting various usage scenarios. They can be used for packaging bulk dried fruits, large bakery products, agricultural supply packs, and assorted daily consumer goods. Paper bags produced from food-grade paper materials can also be used in food-contact packaging applications. The machine is equipped with an assisted loading structure to facilitate the replacement and handling of large paper rolls, while maintaining a balanced relationship between energy consumption and production rhythm during operation. The machine body adopts a protective structural design that helps reduce dust interference from the production environment. While maintaining operational convenience, it also improves production hygiene conditions, making the machine suitable for packaging enterprises of different scales to carry out stable production of large-size customized flat bottom paper bags.
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
