Chennai-based RS Graphics has invested in a Zhongke ZK 6421 fully automatic intelligent rigid box making machine, marking a shift from semi-automatic operations to a more integrated and efficient production setup.
Speaking to PrintWeek, R Sridhar, managing director of RS Graphics, said the decision was driven by capacity constraints and operational inefficiencies. “We did not have the capability to produce larger-sized rigid boxes. Most of our existing setup was limited to smaller formats,” he explained.
The company’s earlier equipment, including a semi-automatic system, meant that a portion of rigid box work had to be outsourced. “Some of these jobs were done manually outside, and some through other automatic setups. Transportation and logistics became a problem,” Sridhar said. “With this machine, we bring those jobs in-house.”
The Zhongke ZK 6421, supplied by Zhongke, was selected to address these gaps in size capability, automation and consistency.
Sridhar said the machine’s flexibility in handling multiple formats was a key factor. “This machine allows us to produce a wider range of box sizes, including larger formats and even asymmetric designs, which we could not handle earlier,” he noted.
He added that the fully automatic workflow would eliminate the need for fragmented production. “The integration of glueing, taping, forming and conveying into one system means we no longer have to depend on outside processes. It streamlines the entire operation,” he said.
Precision was another deciding factor. “The visual positioning system gives accuracy up to ±0.05-mm, which is critical for high-end packaging. It ensures consistency across runs,” Sridhar said.
He also highlighted the role of automation in improving efficiency. “With servo-based motion control and digital parameter settings, the machine reduces manual intervention and makes changeovers faster and more reliable,” he said.
The investment comes amid a phase of expansion for the company. Since March 2025, RS Graphics has added a new production building adjacent to its existing facility and installed additional equipment, including a Komori press and a bundling machine. “A lot has changed. We have expanded infrastructure and added new capabilities across the board,” said Sridhar.
The company reported a 20% increase in turnover over the past year, building on an earlier base of INR 60–70-crore. While Sridhar did not disclose exact margin figures, he indicated stable profitability alongside the growth.
Exports remain part of the company’s strategy, particularly to the US market. Sridhar said recent tariff changes had a limited impact. “Honestly, it has not affected us much because the demand remains. The tariffs have stabilised, and customers still need the product,” he said.
Looking ahead, RS Graphics is evaluating further expansion, including potential new facilities and scaling its export footprint. The addition of the Zhongke rigid box line positions the company to target higher-value packaging applications while reducing operational friction in its workflow.