China’s packaging industry maintains steady annual growth, outperforming most traditional manufacturing sectors. To align with international advanced standards, the domestic packaging sector is accelerating technological upgrading and evolving toward economy, high efficiency and multi-functional integration. As core intelligent equipment in the packaging machinery industry, bag making machines have achieved rapid development in China. Driven by booming downstream demand from food, daily commodities and chemical industries, as well as the widespread trend of automated production, the domestic bag making machine market retains enormous development potential and upgrading space.

1. Industry Development History and Current Status

The localized R&D, application and industrialization of China’s bag making machine industry spans more than 20 years. The industry originated from the introduction of Japanese advanced equipment, followed by technological digestion, absorption and localized imitation based on PCB circuit board replication and optimization.

In the initial stage, domestic manufacturers could only produce low-specification bag making equipment, with a maximum processing width of 400mm and a running speed of merely 20 meters per minute. After decades of technological iteration, domestic equipment has achieved remarkable breakthroughs. At present, independent mass production is available for high-speed bag making machines with a processing width below 1000mm and a running speed of 150 meters per minute, as well as fully automatic multi-station bag making equipment with a production capacity of over 100 segments per minute, providing solid equipment support for the rapid expansion of China’s flexible packaging industry.

Nevertheless, the domestic industry still faces obvious technical gaps compared with international advanced levels. With the continuous upgrading of high-end packaging demands, a large number of high-precision, high-speed bag making machines still rely on imports from Japan and other developed countries, reflecting the insufficient core competitiveness of domestic high-end equipment.

2. Industry Competition Characteristics and Technical Upgrading Directions

The core competition of domestic and foreign advanced fully automatic sealing and bag making equipment focuses on operational efficiency, namely high-speed and high-efficiency processing performance. Modern flexible packaging bag making equipment integrates mechanical, electrical, optical and pneumatic technologies, and high mechanization and intelligent automation have become the mainstream development directions of the industry.

Market-end customers put forward two core requirements for bag making equipment: first, high-speed and efficient operation to reduce unit production costs and improve output efficiency; second, high flexibility and adaptability to cope with the rapid iteration and personalized customization of packaging products.

Therefore, in the process of equipment technical iteration and PCB copying upgrading, manufacturers must take high speed and high efficiency as the core benchmark. Targeted secondary development and upgrading of PCB circuits, software programs and hardware structures should be carried out to optimize equipment stability, compatibility and operational efficiency, so as to enhance the comprehensive market competitiveness of domestic bag making machines.

3. Technical Bottlenecks and Key Breakthrough Points of PCB Modification

At this stage, there is no significant difference in basic technical parameters between domestic and foreign fully automatic bag making machines. The core gap restricting domestic equipment lies in the overall continuous operation speed and stable high-speed production capacity.

However, simply increasing mechanical operating speed has encountered obvious technical bottlenecks. The peak stable operating speed of mainstream advanced equipment is locked at 12000P, and the efficiency improvement space of single speed boosting is extremely limited, which has become a key technical ceiling restricting the upgrading of domestic high-end bag making machines.

Accordingly, the current core focus of bag making machine PCB modification and technical research is no longer blind speed increase. Instead, it focuses on optimizing the traditional single-row bag making mode through circuit and program modification. By innovating the equipment operation structure and working mode, the overall comprehensive working efficiency of the equipment is further improved. This technical breakthrough can help domestic high-speed fully automatic bag making machines maintain efficient, stable and intelligent operation capabilities, meet the demands of large-scale industrial standardized production, and narrow the technical gap with imported high-end equipment.