Coating Machines: The "Precision Brushes" in Industrial Manufacturing

A coating machine is a critical device that evenly applies materials such as adhesives, coatings, or inks onto the surface of substrates. Widely used in industries like printing, packaging, new energy, electronics, and automotive, its core function is to precisely control coating thickness and uniformity, endowing materials with properties such as water resistance, conductivity, decoration, or protection. It is an indispensable precision equipment in modern industry.

Working Principles and Processes
The operational  of a coating machine mainly involves plate loading, coating, drying, and winding. Substrates (such as films, paper, or metal foils) move at a constant speed through a roller transmission system. The coating mechanism adjusts the angle and pressure via mechanical or pneumatic components to evenly apply liquid or molten materials onto the surface, which are then dried and cured to form a stable coating. In high-end applications, such as lithium battery coating machines, micron-level precision is required to ensure consistency in battery electrode sheets, directly impacting battery performance and safety.

Diversified Application Fields
Coating machines are used in extremely wide-ranging scenarios:

· Traditional Industries: In printing and packaging, they coat paper laminations and apply adhesive to labels; in textiles, they impart water and stain resistance to fabrics.

· Emerging Fields: In the new energy sector, coating machines are core equipment for lithium battery production, responsible for the precise coating of positive and negative electrode pastes; in semiconductor manufacturing, they coat photoresist, directly influencing chip yield rates.

· Specialized Needs: Equipment like Jingzhou Equipment's "contactless air-float coating machinery" uses air-float technology to reduce dust and static interference, suitable for high-end manufacturing such as perovskite solar cells.

Current Industry Status
China's coating machine market has continued to expand. The lithium battery coating machine market alone reached 15.6 billion RMB in 2023, with a localization rate exceeding 98%. However, core components (such as coating dies) still rely on imports. Domestic enterprises like Yinghe Technology and Xiandai Intelligence have gradually matched international standards in coating speed and precision through technological innovation, driving breakthroughs in wide-width and double-layer coating technologies.

Future Trends: Intelligence and Greenization

· Smart Upgrades: Real-time monitoring and adaptive parameter adjustment using AI and machine vision will enhance production efficiency and yield rates.

· Green Manufacturing: Low-energy designs and environmentally friendly coatings will reduce VOC emissions, aligning with "double carbon" goals.

· Technological Integration: In fields like flexible electronics and energy storage, coating machines will accommodate more new materials, promoting industrial upgrading.

Company Profile
Nanjing Sumino Precision Machinery Co., Ltd. is a high-tech enterprise integrating scientific research, production, and sales, upholding business principles of integrity, equality, and prioritizing customer interests. To further enhance equipment quality and standardize production, we have established six independent R&D and production departments for specialized equipment systems: plastic sheet/board, casting, biaxial orientation, lamination/composite, recycled pelletizing environmental protection recycling, and coating machines. These provide professional, full-set technical solutions to meet each customer’s unique needs. Our biaxial orientation film manufacturing systems include: BOPP biaxial orientation film production lines, PVC biaxial shrink film production lines, PET biaxial orientation film production lines, BOPA biaxial orientation film production lines, and BOPLA biaxial orientation film production lines.