Dyne pen (corona pen), specially used to measure the effect of corona treatment on the film. It can accurately test whether the surface tension of the plastic film has passed the value of the test pen, so that the user clearly understands whether the film is suitable for printing, composite can be vacuum aluminized, etc., so as to effectively control the quality and reduce the problem caused by unqualified materials Loss. 

The corona pen (dyne test pen) can accurately test the dyne value or surface wetting tension of the film surface, and it is produced by foreign advanced technology. Performance: It can accurately test whether the surface tension of the plastic film reaches the value of the test pen, so that the user clearly understands whether the film is suitable for printing composite or vacuum aluminization, effectively controlling the quality and reducing the waste caused by unqualified materials. Delay in construction period. Test method: In industrial practice, the surface energy (surface tension) of plastics is measured by the test ink in accordance with DIN ISO 8296, using inks with known surface energies to brush about 100mm long ink strips on the film to be tested.

And observe whether more than 90% of the edges of the ink strips shrink and form ink droplets within 2 seconds. If so, replace the ink with a lower surface energy and then brush the ink strips. Perform the same observation until it does not shrink and When ink drops appear, the surface energy of the test ink corresponds to the surface energy of the film. This method can accurately measure the surface tension and surface wetness of the substrate and determine whether the surface factors of the substrate meet the requirements before working in order to adjust the ink, coating, and viscosity to the working needs. There are 21 test inks with a surface energy level of 30 to 72 mN/m (each with a difference of 2 mN/m). Dyne test pen (38mN/m) can be used as a rapid test tool for surface energy after corona treatment, but it is not suitable for system testing of printed or coated surfaces. When the test pen draws a line on the corona-treated surface, if it is continuous in a line, it means that the surface energy of the material is not less than 38mN/m. If it is intermittently not connected in a line, it means that the surface energy of the material is less than 38mN/m. m. 

Insufficient or even untreated, which does not meet the printing processing requirements Surface tension and surface wetness are very clear standards for accurately determining the bonding status of printing inks and other materials on the surface, but there are other factors that affect viscosity, such as static electricity and many additives. However, these factors are not often shown during the test, and even the test results are very good but actually unsatisfactory. This requires discussing these technical issues with the raw material supplier. Generally speaking, the above situation will not happen to them, and the surface value of 38-41mN/m can meet the viscosity requirements. When the surface tension is below 37mN/m, it will cause many white pages (no printed content). When the surface tension is below 35mN/m, the viscosity will be bad.