The slit-type precision extrusion coating die is widely used in the fields of electronics, photovoltaics, photosensitive materials, lithium batteries, permeable membranes, optical films, printing, etc. In the coating process, the middle and thick sides of the coating are generally thin. The slit-type precision extrusion die head developed by Hongge Technology Co., Ltd. (see Figure 1), which perfectly combines the two advantages of blade coating and slit extrusion coating, has achieved excellent results in production and has achieved National patent, applied for international invention patent, and its coating precision has reached the industry leading level.

1. High-precision built-in scraper, dual flow channel. Due to the effect of the scraper, the outlet pressure of the slurry in the first flow channel is balanced, and then enters the second flow channel for further homogenization. When the slurry enters the lip, the pressure in the middle and the edge is almost the same, and the resulting coated product has a lateral accuracy Reached 1.5% (see Figure 2).

2. 

3. Wide coating process window Suitable for slurry and coating speed with different flow rates and viscosities.

4. 
   

5. Long service life The surface of the die runner is coated with super-hard wear-resistant material.

6. 
   

7. Easy to operate.No need to adjust the slit size of die lip.

8. 
   

9. Saving the raw materials After using the die, it can reduce the unnecessary waste of raw materials when the coating process parameters are changed, and because the lateral accuracy of the coated product is improved, the number of parts with thinner edges is cut due to the thinner edges. The loss of raw materials caused is conducive to reducing the production costs of enterprises.

Technical parameters of precision extrusion die