The printing quality of container bags directly affects the quality of the entire product. The problems of printing quality mainly exist in several aspects such as people, equipment, raw materials, operation methods, and environment.
1. Personnel factors
It is mainly reflected in the problems of operators' lack of responsibility, poor quality awareness, and unskilled technology.
2. Equipment factors
It is mainly manifested as follows:
(1) Equipment aging. Equipment aging can easily cause the printing roller to be pressed loosely or too tightly, resulting in no printing or deformation of the printed characters. In addition, equipment problems can easily cause missing printing and missing characters.
(2) Equipment without bag feeding and drying devices. Equipment without bag feeding and drying devices can easily cause insufficient evaporation of ink and easy adhesion to container bags.
3. Raw material factors
It is mainly manifested as follows:
(1) Ink quality problems. It can easily cause the container bags to fade and the printed characters to be dull.
(2) Uneven ink mixing. It can easily cause the printed characters to be dull.
(3) Bag piece problems. There are oil stains on the bag pieces, which makes it impossible to print, or the bag pieces themselves do not meet the requirements.
(4) Offset plate problem. The offset plate is easily corroded by ink, and the font itself has been deformed.
4. Operation method
Job transfers and new workers are not familiar with the operation method, which can easily cause misaligned printing or even personal injury.
5. Environmental factors
This mainly manifested in the working environment with high noise and strong ink odor. In addition, in autumn and winter, due to the dry air, there is accumulated static electricity on the surface of the bag, which makes the bag fabric easy to turn over or print on the back.