Discussion on the Discoloration of Bottle Blown by Screen Printing Plastic Bottles

As the market's requirements for packaging appearance are becoming more and more personalized, silk screen printing has been widely used in the plastic bottle field. The following is a discussion on the problem of bottle-bleeding of plastic bottles for screen printing. Hopefully, it will help everyone!

Question: I use Wahaha waste (AD calcium bottle waste) blowing, printing with pneumatic curved screen printing machine, if you want to make it not fade, must use a flame processor? Is there any other way?

A: The flame treatment method is not necessary. The flame treatment method is unsafe, the cost is relatively high, and the efficiency is relatively low. The corona treatment or the plasma processor can be used for the treatment. The effect is relatively good, the efficiency is high, and the energy is clean.

B. Answer: Not necessarily, what kind of material is your bottle, PP, PE, PET...? Also depends on what ink you use?

In general, PP/PE plastic bottles are best treated with flame surface treatment before screen printing, so that the surface tension is increased, which can enhance the adhesion of the ink; after treatment, the treated bottle can be put into water, and the treated place can be attached with water. Very smooth, unsmoothed areas with water droplets, adjust the best handling according to this principle.

In addition, there are several special inks that can be printed directly without pre-flame treatment. I know that Digcom and Marlboro have this series.

C answer: You can also wipe the PP water to solve, but the cost is higher.