(1) The oil leakage phenomenon of thermosetting ink printing: the temperature can not reach, and it is not completely dry; the substrate can not meet the requirements of thermosetting ink printing (such as tarpaulins, laminating treatment cloth, etc.), which are generally not permeable Fabric

  (1) The oil leakage phenomenon of thermosetting ink printing: the temperature can not reach, and it is not completely dry; the substrate can not meet the requirements of thermosetting ink printing (such as tarpaulins, laminating treatment cloth, etc.), which are generally not permeable The fabric is prone to surface oil leakage; the diluent or auxiliary agent is added in excess in the ink.
 
    (2) The surface of the ink layer is blistered, the pattern is not smooth, and the appearance is unsightly: the curing temperature is too high and the time is too long; the distance between the heating tube and the substrate or the distance between the hot air gun and the printed pattern is too close, or the curing temperature is too high, the speed Too slow; adding thinner or additives by mistake; printing environment is poor, dust is more than 0 knives are notched or not straight, the screen is clogged or the printing table is uneven.
 
    (3) Poor adhesion and easy to fade: the curing temperature is not enough and the curing is not complete; although the curing temperature and time meet the requirements, but the power cannot be reached, the surface of the ink layer is melted, and the bottom cannot reach the curing temperature, so that the ink cannot be completely cured (Especially three-dimensional and thick printing); the selected printing materials can not meet the requirements of thermosetting ink printing.
 
    (4) Color migration and discoloration: the curing temperature is not enough, the ink layer is not completely cured; the printing substrate uses disperse dyes, and the printing pieces are heated to a certain temperature during heat treatment, and the dyes in the fabric will sublimate, resulting in color migration; Color inks with poor migration resistance are used for color printing, such as purple, pink and fluorescent colors; ink curing temperature is too high, especially fluorescent or brightly colored inks, general heat resistance is poor, after high temperature The pigment is prone to discoloration during curing.
 
    (5) The surface of the printed pattern is not clear, and the text and lines are not fine: the quality of the printed screen is poor (the pattern effect is not good, the tension of the two versions is not enough, or the printing equipment and process are not good); the printing process is poor (squeegee pressure during printing Uneven); the viscosity of the ink is not adjusted properly; the printing substrate is too rough to meet the requirements of fine printing.
 
    (6) Ink collapse during the three-dimensional effect: the printing screen film is too thick; the scraping pressure is too large or uneven during printing; the ink layer is overprinted without surface drying; the temperature is too high during curing, or the temperature is too long during curing .

The above is the analysis of the common problems of thermosetting inks introduced by Zhejiang licheng Flat Screen Printing Machine Factory. If you have needs in this area, don't miss us. If you are interested, please come and leave us a message Right.