How is the Efficiency of Gravure Coating Machine?

2025.07.08

Author：gravure coating machine

Gravure coating machine the core advantages of high efficiency, stability, and intelligence in the field of high-end manufacturing. Their efficiency can be quantified and analyzed through the following key indicators:

1. Coating speed: Breaking through traditional limits and achieving high-speed mass production

Single-sided coating speed: The speed of gravure coating machine is usually 50-100 meters/minute, while the new double-sided gravure coaters can increase the speed to 160-180 meters/minute (depending on the material) by optimizing the oven structure and drying process. Some equipment even supports high-speed operation of 200 meters/minute, significantly shortening the production cycle.

Double-sided synchronous coating: The double-sided micro-concave device can be used to coat the front and back of the substrate at the same time, avoiding the process of winding up in the middle after single-sided coating, and improving efficiency by 30%-50%. For example, in the production of lithium battery pole pieces, double-sided coating technology can increase the single-line production capacity from hundreds of meters per hour to kilometers, meeting the needs of large-scale production of power batteries.

2. Coating accuracy: micron-level control to ensure product consistency

Thickness control: By adjusting the cell depth (0.5-6 microns) and line count (number of cells per unit length) of the gravure roller, the coating thickness error can be within ±0.3 microns, meeting the strict uniformity requirements of high-end fields such as lithium-ion battery separators and optical films.

Surface quality: Using low-viscosity coating liquid and mesh-free wall engraving technology, the coating liquid forms a line contact between the anilox roller and the substrate, and the micro-smoothing of the coating is completed synchronously. The surface roughness Ra≤0.1μm is better than the Ra≤0.3μm of traditional gravure coating, which significantly reduces the product defect rate.

3. Equipment stability: long-term trouble-free operation to ensure continuous production

Automation control: integrated digital tension system, AGV winding, automatic cutter and other technologies to achieve full process automation from unwinding to winding, reduce manual intervention, and improve the overall equipment efficiency (OEE) to more than 85%.

Durability design: key components such as the deviation correction roller adopt special processing technology, with high temperature resistance and anti-skid characteristics, and the service life is extended to more than 5 years; the oven air knife structure is optimized through fluid simulation, and the hot air uniformity is within 5%, ensuring the stability of coating quality under long-term operation.

4. Energy consumption optimization: green manufacturing, reducing operating costs

Hot air energy-saving technology: adopting a balanced design of 1:1.3 air intake and exhaust volume, combined with a waste heat recovery system, the drying energy consumption is reduced by 20%-30%. For example, in the drying process of lithium battery pole pieces, the energy consumption per unit area is reduced from 0.15kWh/m2 to 0.11kWh/m2.

Low viscosity coating liquid adaptation: micro-gravure coating is mostly used for low solid content coating liquids with a viscosity of 1-200cp, with excellent flow properties, reducing energy loss during the coating process, and further reducing production costs.

Qingdao Chenan Machinery Co., Ltd. has the advantage of developing and producing rubber winding equipment, with higher technology than various equipment assembly manufacturers in the industry. For more information about gravure coating machine, please contact us.

Company: Qingdao Chenan Machinery Co., Ltd.

Address: Yanjialing Industrial Park, East Chengma Road, Tongji New Economic Zone, Jimo District, Qingdao City, Shandong Province

Email: qdcajx@gmail.com