How to solve the cracking problem of UV water-based ink in the printing process
Date：2024-01-30 From：Star Color
The cracking problem of UV water-based ink in the printing process is a more common problem, which will not only affect the appearance of the print, but also affect its quality and performance.This paper will introduce the causes and solutions of UV water-based ink cracking problem, aiming to help printing enterprises better use UV water-based ink, improve printing quality and efficiency.
Causes of UV water-based ink cracking problem
There are many reasons for the cracking of UV water-based ink, mainly including the following aspects:
Excessive drying of ink: In the case of excessive drying of UV water-based ink, the conjunctiva on the surface of the ink layer will become very hard and prone to cracking.
Too high ink viscosity: too high ink viscosity will lead to too thick ink layer, easy to produce cracking phenomenon.
The impact of printing materials: Factors such as the smoothness of the surface of the printing material and ink absorption will also affect the adhesion of UV water-based ink, which will lead to the cracking phenomenon.
The impact of environmental humidity: too low environmental humidity will cause the surface of the printed matter to dry too fast, and it is easy to produce cracking phenomenon.
UV water-based ink cracking problem solution
In view of the causes of UV water-based ink cracking problem, the following solutions can be taken:
Control ink drying degree: In the printing process, it is necessary to control the light time and intensity of the UV lamp to avoid excessive drying of the ink.At the same time, an appropriate amount of slow drying agent can be added to the ink to slow down the drying speed of the ink and avoid the phenomenon of cracking.
Control ink viscosity: According to the printing material and printing process, to choose the appropriate ink viscosity.Avoid excessive ink viscosity resulting in cracking phenomenon.
Choose the right printing material: according to the use and requirements of the printed matter, choose the printing material with high surface smoothness and good ink absorption.At the same time, attention should be paid to the preservation of printed materials and the protection of materials during processing to avoid damage to the surface of materials leading to cracking.
Control of ambient humidity: Maintain appropriate humidity in the printing shop to avoid too low ambient humidity resulting in rapid drying of the surface of the printed matter.At the same time, attention should be paid to ventilation and cleaning to prevent the impact of impurities such as dust on the surface of the printed matter.
The use of anti-cracking agent: adding an appropriate amount of anti-cracking agent to the ink can improve the flexibility and adhesion of the ink and effectively reduce the generation of cracking phenomenon.At the same time, attention should be paid to the selection and use of anti-cracking agents to avoid negative effects on the quality and performance of printed matter.
UV water-based ink cracking problem prevention measures
In order to prevent the generation of UV water-based ink cracking problem, the following preventive measures can be taken:
Formulate reasonable printing process regulations: according to the use and requirements of printed matter, formulate reasonable printing process regulations.The drying conditions, viscosity requirements, environmental humidity and other parameters of the ink are clearly specified in the procedure, and the operator is required to strictly abide by the procedure.
Strengthen the detection and control of printing materials: quality detection and control of printing materials to ensure that the surface quality and smoothness of materials and other parameters meet the requirements.At the same time, it is necessary to strengthen the protection and management of materials to avoid damage and pollution of the surface of materials.
Training operators: the operators are trained in UV water-based ink printing technology, so that they are familiar with the performance and characteristics of the ink, and master the correct use and operation skills.At the same time, it is necessary to strengthen the supervision and guidance role of managers to ensure that operators can operate in accordance with the process regulations.
Establish a quality inspection and control system: Establish a sound quality inspection and control system to monitor and control the quality of printed matter in real time.Find and deal with problems such as cracking in time to ensure that the quality and performance of printed matter meet the requirements.
Continuous improvement and innovation: Continuous technical improvement and innovation in the printing production process to improve the printability and adhesion of UV water-based ink performance indicators.Through continuous improvement and innovation, the appearance and quality of printed matter can be further improved and the cracking phenomenon can be reduced.