Printing can be a process whereby text and images are reproduced on various materials. There are several printing methods and based on the printing method various kinds of inks are used. Inks used in printing could be classified into 4 different categories such as aqueous, liquid, paste and powder.
Paste is often used in offset printing and you will find a variety of paste inks such as cold set, heat set and energy curable ones. Some of the different energy curable sorts are electron beam curable and ultraviolet curable. While energy curable provides best quality print, heat sets are most frequently used. Energy curable ones also require special equipment rendering it the most expensive types of inks applied to offset printing.
The heat set one requires heat to put it after which it is cooled rapidly mainly because it catalyses the curing process. In cold set inks, it really is set by using the phenomenon of absorption into the stocks which can be non-coated. Cold set ones usually are utilized for printing books, newspapers, insert printing and are the most cost effective option if you’re within a strict budget.
Solvent ink comprises a mixture of organic chemical substances and chemical toxins. These elements have high vapour pressure and colour in this type of ink is achieved through pigments driving them to proof against fading. Solvent inks enable you to print on uncoated vinyl substrates and they’re economical. Banners, billboards, graphics and decals are normally printed using solvent ink. The benefit of using solvent ink for printing is that the prints are UV resistant and waterproof even so the issue with by using this will be the disposal in the solvent as well as the vapour created by the solvent.
Aqueous inks are primarily utilised in desktop inkjet printers. These comprise a variety of pigments or dyes, glycol and water. Aqueous offer the vivid plus a variety of colour options the one drawback to this ink would it be is just not waterproof and is washed outside the surface without lamination or specialized coating to shield the ink. Aqueous inks will also be inexpensive to manufacture.
UV curable inks:
UV curable inks have acrylic monomers along with an initiator package. After the printing job is completed the printed material is exposed to strong UV light which cures some of it. The benefit of this ink could it be dries quickly as well as the disadvantage is because are incredibly expensive.
These are many of the different types of inks applied to commercial printing services.
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