US Patents D355,669 & D346,397
FACT: The world’s largest battery separator manufacturer in Japan developed their coating technology using our MICROGRAVURE™ technology, and continues to manufacture their separators exclusively with our technology.
WARNING: Microgravure™ is a patented technology of Yasui Seiki. Yasui Seiki's genuine Microgravure™ undergoes a multitude of post-production processes that are not publicly shared. For this reason, Microgravure rolls manufactured by companies other than Yasui Seiki consistently underperform compared to the genuine Yasui Seiki Microgravure™.
A smaller diameter gravure roll, engraved with cells of varying depths, is designed to deliver a specific coating volume. This roll is used in a reverse kiss coating method, where it is partially submerged in a solution pan. As the roll rotates opposite to the web’s direction, it picks up the coating solution in its cells. A flexible doctor blade gently removes any excess, ensuring that only the precisely measured solution from the cells is transferred to the web.
Regular Gravure | MICROGRAVURE™ |
---|---|
Large contact area (a) and small web-to-roller (b) distance | Small contact area (a) and larger web-to-roller distance (b) |
Unstable bead of solution | Very stable bead of solution |
Unstable coating | Exceptionally stable, glossy and uniform coating |
Backing roll causing issues | No backing roll |
Limited viscosity range | Extremely low viscosity coating |
Irregular surface | Extremely smooth surface |
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Yasui Seiki's Coating Service facility in Bloomington, Indiana, MIRWEC Coating, offers coating trials using many different size MICROGRAVURE™.
Yasui Seiki MICROGRAVURE™ rolls are custom-made to order. Each roll undergoes numerous manual finishing procedures that are our trade secrets. Alongside these finishing procedures, all meticulous physical, mechanical, and chemical tests are manually conducted with extreme care by our Master MICROGRAVURE™ engineers. Only Yasui Seiki can deliver the full functionality of our one-of-a-kind MICROGRAVURE™ technology.
Yasui Seiki MICROGRAVURE™ is the preferred method in Japan for coating multiple layers in OLED displays and touch screen components. Our technology is predominantly used in critical electronics, including smartphones, tablets, computer monitors, and other OLED displays. Remarkably, 95% of the smartphones sold in the US contain at least one layer coated by one of our MICROGRAVURE™ machines. Over the past five years, MICROGRAVURE™ has demonstrated unparalleled performance in every layer of Li-ion battery coatings, including anodes, cathodes, and separators. Additionally, the application of MICROGRAVURE™ is rapidly expanding in industries such as solar cells (photovoltaics), wearable medical devices, and state-of-the-art optical films.
OPTICAL
BATTERIES
PRINTED ELECTRONICS
See Applications for more application examples.
Mesh | Average Wet Thickness (μm) |
R20 | 56.3 |
R30 | 44.6 |
R36 | 42.0 |
R38 | 37.1 |
R45 | 47.0 |
R50 | 30.1 |
R55 | 23.6 |
R60 | 32.0 |
R70 | 22.0 |
R80 | 20.0 |
R90 | 14.7 |
R100 | 10.2 |
R110 | 9.6 |
R120 | 9.5 |
R150 | 6.7 |
R180 | 5.5 |
R200 | 3.6 |
R230 | 2.7 |
R250 | 2.1 |
Contact Us for custom mesh sizes