Plastic bags are used more and more, and the style and quality are also varied. For example, real estate custom advertising bags, supermarket custom shopping bags, etc., plastic loans for different purposes will have their standard quality requirements, then do you know these quality standards?
Plastic bag printing quality evaluation standard
The first point, the requirements of the pattern. Specifically, the pattern should be clear and complete, and there must be no stain left on the surface of the plastic bag. At the same time, the printing color number must be developed according to the process monochrome number designed at the time, and the plastic bags produced in the same batch are There must be no color difference in color. In addition, the printing position should be arranged exactly according to the original design.
The second point is that there is no large number of printing points. The so-called secondary point is the point of deficiency. The maximum allowable value is 20 per square meter.
Third, the ink stripping rate must be less than 20%. Need to be reminded that in the above three plastic bag printing quality evaluation standards, the third point is that the ink peeling rate is the most difficult to understand, if it is a novice, it is best to first from the formula is A (ink stripping rate) = S1 Start with /S2*100%, and then figure out from a practical point of view to see how the bottom details should be grasped.
In some people's view, plastic bag printing is a work without technical content, and it only needs to supervise the machine to perform step by step. In fact, it is not. After the printing is completed, it is necessary to check through the sampling method to see if every detail of this batch of plastic bags has reached the required standard, otherwise it will be “re-recycled”.
