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2026
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Zhengye International Carton Factory’s Spray System: A Tri-Function Solution for Humidification, Dust Removal, and Antistatic Protection—Successfully Deployed
Spray-based humidification/dust removal/anti-static system
Author:
Aogong Technical Department
Hong Kong Zhengye International Holdings Limited is a group enterprise integrating papermaking, packaging, and other related businesses. Subordinate's The packaging carton factory specializes in producing high-end industrial cartons and food-grade packaging cartons, with a workshop covering approximately 8,000 square meters. Due to the dry air during summer and autumn and the long-term operation of air conditioning, the workshop’s humidity often falls below 40% RH, leading to persistent issues such as board cracking, edge warping, and static‑induced dust accumulation. These problems severely constrain product quality rates and production efficiency. 2025 Zhengye International Partnering with Guangzhou Aogong Spray Equipment Co., Ltd., we have customized an intelligent high-pressure micro‑mist humidification, dust removal, and anti‑static spray system, comprehensively addressing the challenge of dry air and delivering simultaneous improvements in quality and efficiency.
I. The Main Reasons for Humidifying Packaging Cartons
The core raw materials of cardboard—corrugated paper and kraft paper—are made from plant fibers and are highly sensitive to ambient humidity.
1. Prevent cardboard from becoming brittle and cracking along the score lines. When relative humidity falls below 40%RH, the paper’s moisture content drops from 8%–12% to below 5%, causing the fibers to lose moisture, shrink, and become brittle. This makes it prone to cracking and fraying during die-cutting and creasing, and increases the likelihood of breakage during folding and forming.
2. Eliminate edge warping and deformation: In dry conditions, uneven moisture loss in paper causes edge curling and dimensional shrinkage of 0.3%–0.5%, leading to registration errors in printing and misalignment during lamination, resulting in frequent batch‑level scrap.
3. Eliminate static electricity hazards: Static electricity is severe in the drying workshop, not only attracting paper dust and contaminating the surface of cardboard boxes but also disrupting the operation of high-speed equipment and potentially causing minor electrical discharges, thereby posing safety risks.
4. Stabilize the production process: Cardboard box production requires maintaining an optimal humidity range of 50%–65% RH to ensure strong corrugation adhesion and robust ink‑printing performance, making this a critical step in quality control for high‑end cartons.
II. Project Implementation and Application Outcomes
Guangzhou Aogong’s technical team customized a high-pressure micro‑mist intelligent humidification system tailored to the plant’s workshop layout, production line orientation, and humidity requirements. The system comprises high-pressure misting equipment, precision atomizing nozzles, an intelligent temperature‑and‑humidity control cabinet, and piping. It atomizes water into ultra‑fine droplets measuring 5–10 microns, which evaporate completely within 1–3 seconds, leaving no standing water or wetting of cardboard boxes. Equipped with an automatic humidity‑control module, the system continuously monitors workshop humidity, precisely maintaining relative humidity at 55%–65%, with a humidity uniformity of ±3% RH.
The project has yielded significant results after implementation:
1. Product Quality Enhancement : Cardboard flexibility has been significantly improved, with issues of cracking and breakage virtually eliminated. Carton flatness and dimensional stability now meet specifications, print registration accuracy has been enhanced to 99.8%, and the surface is clean, free of dust and defects.
2. Smooth and efficient production: Static electricity is completely eliminated, reducing equipment jams and shutdowns; production line uptime improves by 15%, and the first-pass yield for die-cutting, adhesive application, and other processes rises from 92% to 99.5%.
3. Workshop Environment Optimization: Ultra-fine mist particles effectively suppress dust, reducing paper‑dust concentrations by 70%, improving workshop air quality, and enhancing worker comfort.
III. Comprehensive Project Benefits
1. Significant economic benefits: The scrap rate has dropped from 8% to 1.2%, with monthly paper waste reduced by more than 2.5 tons; based on market prices, this translates into annual raw-material cost savings exceeding RMB 300,000. Moreover, the equipment’s energy consumption is only one-fifth that of conventional humidification methods, yielding annual electricity‑saving costs of approximately RMB 80,000 and an investment payback period of less than one year.
2. Outstanding quality and efficiency: The pass rate for carton products has remained stable at over 99.5%, customer complaint rates have dropped by 90%, we successfully passed quality audits from premium clients, order volumes have increased by 20% year over year, and our brand competitiveness continues to strengthen.
3. Management and Security Benefits: The intelligent system operates fully automatically, eliminating the need for on-site personnel and reducing labor costs associated with three humidification stations. Static‑electricity elimination lowers equipment failure rates, extends equipment lifespan, mitigates safety risks posed by static electricity, and strengthens the foundation of safe production.
This collaboration with Guangzhou Aogong Spray Co., Ltd. represents a significant step forward in the refined production of Zhengye International’s packaging products. Leveraging its expertise in spray‑based humidification, dust suppression, and static‑elimination technologies, Guangzhou Aogong Spray Equipment Co., Ltd. has addressed the challenges of dry working environments in carton‑making facilities, delivering multiple benefits—improved quality, enhanced efficiency, cost reduction, and increased safety—and supporting Zhengye International’s continued, steady growth in the high‑end packaging market.
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