Kaip išspręsti rašalo tirpimo ir balinimo problemą spausdinant Nuimamus lipdukus juodu rašalu

Kaip išspręsti rašalo tirpimo ir balinimo problemą spausdinant Nuimamus lipdukus juodu rašalu

Since any packaging needs to print barcodes, black ink has become an indispensable ink in Removable Stickers printing, but it is easy to appear "dissolving ink" and "whitening" when gravure black ink is used. The solution is attached to this article. .

ekstremalios situacijos

Black ink "dissolving ink" means that when the ink or varnish of the same system is overprinted with black ink, the edge of the image and text printed in black ink will be blurred, and this blurring phenomenon will be pulled under the action of the scraper. This is because the same solvent as the black ink in the varnish will dissolve the black ink to a certain extent.

There are three main reasons for the "whitening" phenomenon:

Viena iš jų yra ta, kad neužtenka paties rašalo juodumo; kita problema yra ta, kad yra tam tikra problema, susijusi su pagrindinio dažiklio dalimi, kurią naudoja rašalo gamintojas nuimamų lipdukų gamyboje juodo rašalo. 50 procentų gatavo juodo rašalo pridedama prie rašalo; trečia – juodo rašalo spausdinimo kiekis yra per didelis, o rašalo pakartotinio panaudojimo skaičius yra per daug.

  solution

Appropriately change the black ink system to make the system change with the ink superimposed on it. For example, when using ester-soluble varnish and ester-soluble black ink, benzene-free black ink can be added in the ratio of 2:1 to the ester-soluble black ink. Alcohol-soluble black ink, so that the system of black ink and varnish can be different, thereby eliminating the phenomenon of "dissolving ink" of black ink. This method also works for the "whitening" phenomenon, and it works very well.

https://www.minongpackaging.com/adhesive-lipdukas/low-tack-removable-stickers.html