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2026
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Aogong’s precision coating system solutions help the textile industry reduce costs, improve quality, and boost efficiency.
Precision Spraying System
Author:
Aogong Technical Department
Textile dyeing is a critical step in the textile manufacturing process; however, conventional bleaching and dyeing techniques have long been plagued by two major challenges: first, significant pigment wastage—large quantities of dye are carried away by wastewater during immersion, driving up production costs while placing immense environmental pressure; second, lengthy drying times—traditional methods require fabrics to be thoroughly saturated with dye before undergoing extended heat‑based drying, resulting in persistently high energy consumption.
A shoe factory in Nanhai, Foshan, faces similar challenges in the dyeing process for upper fabrics. The factory has extremely stringent requirements for spray‑dyeing, demanding uniform and consistent coating; even minor deviations can result in color variations in the finished product, compromising quality. In response, the factory commissioned Aogong to custom‑design a specialized textile‑spraying system. To meet these exacting standards, Aogong developed a comprehensive spray‑dyeing solution comprising three core subsystems.
(1) Gas Source Pressure Regulation Subsystem
This system is responsible for supplying stable, controllable compressed air throughout the entire spraying process. As the critical medium for atomization, the stability of air pressure and flow rate directly determines the quality of the spray pattern. The air‑source pressure‑regulation subsystem, equipped with precision pressure‑regulating and filtration components, ensures that pressure fluctuations in the output gas are kept within an extremely narrow range, thereby providing a reliable foundation for the subsequent atomization process.
(II) Liquid Pressure Regulation Subsystem
The precision of dye delivery is the lifeblood of dyeing quality. The liquid pressure‑stabilization subsystem employs a set of pressure‑regulating pumps and high‑precision metering devices to ensure that dye is delivered to the spray nozzles at a constant pressure and flow rate, thereby preventing uneven spraying caused by fluctuations in supply. This system can handle a wide range of liquid media, including high‑viscosity dyes, and is adaptable to the requirements of various fabrics and dyeing processes.
(3) Multi-nozzle variable‑rate control subsystem
This is the core highlight of the entire system: it employs a precision air‑atomizing nozzle independently developed by Aogong, featuring an integrated anti‑drip design. When spraying ceases, liquid delivery stops instantly, effectively preventing dye leakage and waste. The multi‑nozzle variable‑adjustment subsystem can dynamically and in real time modulate the spray volume of each nozzle according to the production line’s operating speed, ensuring that, regardless of changes in line speed, the amount of dye delivered to the fabric surface remains consistent and that spray uniformity is unaffected by variations in line velocity.
Each nozzle in the entire system is independently controlled, and the spray manifold can be configured to connect multiple nozzles according to customer requirements, enabling a variety of operating modes such as low-pressure and intermittent spraying. Once commissioned, the equipment has delivered significant economic benefits and improved production efficiency for footwear manufacturers. Thanks to its precision‑positioned spraying technique, dye is applied uniformly directly to the fabric surface, substantially reducing pigment waste and lowering raw material costs. The process involves merely depositing dye on the fabric’s surface—rather than fully saturating the fabric as in conventional methods—thereby markedly shortening drying times and energy consumption, increasing line speed, and boosting throughput. A multi‑nozzle variable‑adjustment system ensures consistent, uniform application; even during start‑stop cycles or speed variations, the coloration remains stable and well‑controlled, effectively addressing the common issue of color variation in traditional processes.
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