Plastic woven bag ink printing adhesion is not strong and its solution

Causes of failure: 1. The surface of the substrate and the surface of the film or woven bag are too smooth (untreated or handled badly). 2. Ink complexes (ie, auxiliaries) are improperly used or insufficiently used. 3. The dissolved hydrogen bonding force of the ink system is too different from the dissolved hydrogen bonding force of the woven bag substrate. Remedy: 1. The surface of the woven bag substrate reaches about 38 dynes. 2. Add 5% chlorinated paraffin before stretching the woven silk. 3. Ink selection should be very careful (same nature). 4. The use of ink should be appropriate, as long as the viscosity is small and the resin content of the ink system is high. 5. Increase printing pressure.