In the process of printing screen plate causes and solution of censorship
Censorship in the silk screen printing is also affecting the quality of printing a nots allow to ignore.In the process of printing screen printing blocks of censorship reason is various, the main reasons cited as follows:
    1) printing ink particles is bigger.
    (2) the ink on silk screen printing plate after drying and conjunctiva.
    (3) ink viscosity too high impact bearing.
    (4) the temperature low ink liquidity is poor.

      The above four reasons can lead to censorship.Problems encountered in the daily production to particular case is particular analysis, choose the right way to solve them.Now will introduce several ways to solve the following, for choice when using reference.First of all,

      From the ink on the manufacture and use method about solving method of censorship.For large resulting ink particles of censorship, can make ink from the address.The main method is to strictly control the ink granularity shoulds not be too big.From the point of modern manufacturing ink technology, solve the ink particles bigger problem is not a difficult task.

      Ink in the printing process, higher viscosity due to solvent evaporation, instant dry, at mesh with mesh (dry after conjunctival) caused by the phenomenon of censorship.Especially when using evaporation drying ink this kind of phenomenon is more prominent.Evaporation drying inks is through the use of solvent to dry, so must choose the appropriate solvent when printing control drying speed, also pay attention to production workshop ventilation conditions and the status of the temperature, humidity, etc.When choosing ink to consider the influence of the climate, generally in the winter using speed drying oil ink, using late drying oil ink in the summer, during the spring and autumn in using dry degree between the above two kinds of ink.Another point in the fine line printing can use ChiGan agent, if you use ChiGan agent also censorship occur, will have to switch to other types of ink.Using oxidation drying inks, censorship is not a lot of phenomenon occurs, but if excessive use of desiccant in the summer, also censorship happens, usually in the summer to control the use of desiccant.

      When using two liquid reactive ink, due to the slow drying inks, so almost no censorship, but occasionally there censorship occur, the reason is that after the solvent evaporation ink viscosity heighten, censorship, this case can add appropriate ChiGan agent in ink to dilute, in order to prevent the phenomenon of censorship.

      In the process of printing, printing ink viscosity heighten, caused the main reason is that censorship: silk screen printing ink on the plate due to solvent evaporation, the ink viscosity increased, and censorship.If printing graphic area is larger, silk screen printing on the ink consumption, censorship phenomenon was low.If the graphic area is small, silk screen printing ink consumption of small, ink on silk screen printing blocks long time back and forth.With the many mobile on silk screen printing, printing ink viscosity is higher is likely to cause censorship.This situation often should change with the new printing ink, can prevent the phenomenon of censorship.

     Ink liquidity is poor, can make the ink without censorship occurs through the screen.This kind of situation can be addressed by liquidity ink to reduce ink viscosity improved.

     In addition, chooses the screen mesh and open area compared with the ink particle degree of small, ink is not easy to make a very particles through the mesh and the censorship is also is one of the reasons.