Multi-slot die coater

A multi-slot die coater for extruding and coating a coating solution on a surface of a substrate, the multi-slot die coater comprising:

• a first outer die block;
• an intermediate die block positioned adjacent to the first outer die block such that a first slot is formed between the intermediate die block and the first outer die block;
• and
• a second outer die block positioned adjacent to the intermediate die block such that a second slot is formed between the second outer die block and the intermediate die block,
• wherein the first outer die block, the intermediate die block and the second outer die block have a first outer die lip, an intermediate die lip and a second outer die lip, each forming a front end thereof, respectively, a first exit port is formed between the first outer die lip and the intermediate die lip and is in communication with the first slot, and a second exit port is formed between the intermediate die lip and the second outer die lip and is in communication with the second slot, and
• a bolt fastened at contact surfaces between the first outer die block and the intermediate die block and/or contact surfaces between the intermediate die block and the second outer die block, the bolt being at such an angle that a top planar surface of a bolt head faces the first exit port and the second exit port.