National light industry mask implementation standard: QB/T 2872 (paste mask, gel mask, mask powder, non-woven mask sticker, crystal mask) This is the national inspection standard, and it must be marked on the mask packaging bag to be qualified product, otherwise it cannot be sold. Contents: 1. Sensory index 1.1. The appearance should be consistent with […]

When the printing mask packaging bag begins to be diluted, a special diluent must be added to the new ink to make the ink reach a viscosity suitable for printing. The correct dilution method is to slowly pour the solvent while stirring the ink, because the pigment particles in the ink are encapsulated in the […]

Classification of registration and correction devices for mask packaging bags At present, the registration and correction devices used in medium and high-end gravure printing machines are usually divided into two categories: one is to increase or shorten the length of the material belt by adjusting the position of the compensation roller to achieve registration; the […]

In fact, the whitening phenomenon of the mask packaging bag refers to the phenomenon that the ink film becomes white, which can be divided into two types: solvent whitening phenomenon and resin whitening phenomenon. According to the mask packaging bag manufacturers, there are mainly two kinds of whitening phenomena: 1. Solvent whitening. This whitening phenomenon […]

The copper plate of the mask packaging bag is first made of a gravure grid on the light and heavy chromate sensitized carbon paper, and then the continuous positive adjustment pattern is made. The printing plate is obtained by filling the plate and corroding it. Because the copper plate of the mask packaging bag is […]