PET plastic box printing is a commonly used processing technology for transparent plastic packaging boxes. The printing process allows more possibilities for PET plastic boxes. The most intuitive visually, it can achieve a more prominent impact, leaving consumers with more deep impression. Many product parameters and introduction schemes can be printed directly on the PET plastic box, which is convenient for those who want to buy can further increase understanding.
PET plastic box printing is a general term. If the classification is large, PET plastic box printing can be divided into two types: one is offset printing, this offset printing is flat printing, because their ink thickness is the same, generally It is the use of dots to express the color and gradation of printing.
The other type of PET plastic box printing is silk screen. Its working principle is to scrape the ink back and forth to make it penetrate through the very small holes on the lower plate to achieve the printing effect. The thickest ink on the silk screen can reach about 2MM. The thick ink gives a very deep and vivid effect visually, and it is also a common printing type. The characteristic of silk screen is that it doesn't have many colors and the color does not change much.
Offset printing and silk screen printing are the two most commonly used printing methods in the PET plastic box packaging industry. These two printing processes are complementary to each other and each has its own advantages on different occasions. Screen printing is very suitable for small batches and orders with few colors. Offset printing is dozens or hundreds of times faster than silk screen printing. There is no way to compare the two in this regard, but offset printing sometimes shows a color difference in color, and it will often occur in the same batch of printing orders. appear. If it is relatively small, it is a normal situation. If the deviation is large, it should be handled as an exception. There are many reasons for this situation. The working experience of the printing press chief is a very important link. In the same batch of printing, if a small problem occurs in the intermediate link and the machine needs to be stopped, the chance of color difference in the same batch will increase greatly. This is a matter to be very careful about.