The wide application of labels and tags varieties of development, promote the development of the label printing process.Label printing almost covers the offset printing, embossed, intaglio printing, screen printing and digital printing, all printing, but the printing characteristics of all kinds of printing way also is not the same.
1. Embossed process characteristics
(1) embossed graphic clarity, printing speed, high colority and durability is strong, but there is no offset printing image subtle levels of representation is exquisite, especially the transition of gradient gradation reappearance.
(2) due to the nature of the plate cylinder and embossing roller, increase network control is relatively difficult.
(3) due to the structure of the printing press, prone to ink uneven.
2. Flexo process characteristics
(1) light printing pressure, printing materials is very broad.
(2) the printing quality is good.Using quantitative lose the ink roller, printing ink evenly, full, rich, colourful, special agree with the requirement of label printing.
(3) the printing speed faster.
(4) increase network is nonlinear.
(5) the deformation after plate paste version.
3. The characteristics of the offset printing process
(1) image subtle levels of representation is exquisite, especially gradient transition is very soft, smooth, this is unmatched by any other a way of printing.
(2) the ink layer thinner, ink balance requirement is high.
(3) inky full, uniform, but as a result of ink emulsification problem, poor color consistency before and after.
4. Combine the characteristics of the printing process
(1) effective anti-counterfeiting effect.On the same label product using a variety of printing process, can have very good anti-counterfeit effect.
(2) enhance the replication effect of printed matter.Various process is the combination of the advantages of various printing process together, so the combination printing way can ensure that print the printing effect to the greatest extent.
(3) improve the production efficiency, reduce the cost.Combining multiple also contains printing and post-press processes, the combination of products in the production of a complete printing and after printing, directly out of the finished product, can greatly reduce the cost.
5. Screen printing process characteristics
(1) ink layer thick, strong hiding power.
(2) substrate scope is very wide.
(3) the printing speed is slow, gradual gradation reappearance, alignment precision is low.(Gold Printing Group) |
