The forth stage of electrode manufacturing is calendering. The foil coated on both sides is compressed by a pair of roller, which makes the material compacted.

At first, the foil has to be clean by brushes and statically discharged. And it will be clean and roll up again after calendeing. The foil become a mother roll.

The fifth stage of electrode manufacturing is slitting. It is a process to separate the wide electrode coil (mother rolls) to several smaller electron coils (daughter rolls).

The last stage of electrode manufacturing is vacuum drying.

The daughter coils are put into a special goods carrier and stored in a vacuum oven. Inside the vacuum oven, they are dried for approximately 12 to 30 hours.

This process remove any extra moisture and solvents. After the drying is completed, the coils are transported in a dry environment such as dry room or dry pack under vacuum.