People who have worked in Jinan calendar printing company all know that there will be powder falling in the printing process. What is the phenomenon of falling powder? Falling powder refers to the phenomenon that a large amount of dust generated by the vibration of the machine gathers on the surface of the printed matter during the operation of the printing machine, which makes the printed matter very ugly.

　　在分散劑的噴嘴部位和連接噴嘴的噴嘴處是粉塵容易附著的地方。整版印刷機有多達八個噴嘴。抽紙機的兩側。當電梯掉下時，軌道上的灰塵很容易附著掉下，紙張越堆積，就越容易掉下大塊的灰塵。

　　It is easy for dust to adhere at the nozzle of dispersant and the nozzle connecting the nozzle. The whole press has up to eight nozzles. Both sides of the drawer. When the elevator falls, the dust on the track is easy to attach and fall. The more paper piles up, the more easy it is to fall large pieces of dust.

　　如何這個問題?無粘性機械粉末噴涂的發展并不是一個簡單的操作，粉末表面的完全處理在當時是不可能的。目前，除清洗機械外，沒有更好的處理粉末表面的方法。

　　How to solve this problem? The development of cohesionless mechanical powder spraying is not a simple operation, and the complete treatment of powder surface is impossible at that time. At present, there is no best way to deal with powder surface except for cleaning machine.

　　濟南臺歷掛歷印刷公司用空氣槍清洗后，似乎沒有灰塵，但在印刷過程中會掉粉，所以清洗后的打印機高速空轉5分鐘，使灰塵完全落下來;在一起，看到的玻璃襯里不能堅持灰塵。清洗次數與噴印時間長短有關，一次;如果工作24小時，兩次。另外，PP涂層，后續處理，為了謹慎，先清洗，控制分散的量。

　　After cleaning with air gun, Jinan calendar printing company seems to have no dust, but the powder will fall in the printing process, so the cleaned printer idles for 5 minutes at high speed, making the dust fall completely; together, the glass lining can not adhere to the dust. The cleaning times are related to the printing time, once a day; if it works 24 hours a day, twice a day. In addition, PP coating, subsequent treatment, in order to be careful, first cleaning, control the amount of dispersion.