The design of plastic bag fuzzy is what reason is caused?

Plastic bags in daily life, the circulation and utilization rate is very high, walk on the road, often see people with a different color of the plastic bag, especially some of the plastic bag good looks, people are more willing to use. And the beautiful appearance is made by the strict printing process, if improper operation, when the printing will cause the emergence of the design problems such as fuzzy, it is what reason is caused? By the below small make up to you to explain in detail: a small, design or the writing was washed away cause analysis of 1, back exposure time is not enough, want to consider to add back exposure time 2, the main exposure time is insufficient, can increase the exposure time 3 washing version of the time is too long, color printing packaging or brush pressure, attention should be paid to shorten the time washing version and adjust the pressure of the brush 2, generated when the printed text plate movement and the analysis of the causes of bend after 1, main and back exposure time is too long, can reduce the exposure and back exposure time 2, except for a long time, in addition to the sticky time 3, the main exposure and back underexposure, check whether the tube is damaged or aging three, fine line is bent at the analysis of the causes of wavy 1, back exposure, exposure to add back the time 2, main underexposure, to increase the exposure time 3, drying time is not enough, to increase the drying time of version 4, washing water is not new, replacement of fresh water washing version 5, washing time is too long, adjust the washing version of the time what has been discussed above, when printing plastic bag, must be in accordance with the relevant system standards, strict control of each link, to put an end to these problems.