Printing is often a process whereby text and pictures are reproduced on various materials. There are various printing methods and based on the printing method a variety of inks are utilized. Inks used in printing may be classified into 4 different categories such as aqueous, liquid, paste and powder.
Paste is frequently used for offset printing and you will find different types of paste inks like cold set, heat set and energy curable ones. Many of the different energy curable sorts are electron beam curable and ultraviolet curable. While energy curable supplies the highest quality print, heat sets are most commonly used. Energy curable ones also require special equipment so that it is probably the most expensive kinds of inks utilised in offset printing.
The temperature set one requires heat setting it after which it is cooled rapidly since it catalyses the curing process. In cold set inks, it really is set utilizing the phenomenon of absorption to the stocks which are non-coated. Cold set ones usually are used for printing books, newspapers, insert printing and so are the most cost effective option in case you are on a tight budget.
Solvent ink comprises a variety of organic substances and chemical toxins. These components have high vapour pressure and colour in this kind of ink is achieved through pigments making them resistant to fading. Solvent inks can be used to print on uncoated vinyl substrates and they are cost-effective. Banners, billboards, graphics and decals are typically printed using solvent ink. The benefit of using solvent ink for printing would be that the prints are UV resistant and waterproof however the issue with using this is the disposal of the solvent along with the vapour produced by the solvent.
Aqueous inks are primarily used for desktop inkjet printers. These comprise a mixture of pigments or dyes, glycol and water. Aqueous provide the vivid plus a number of colour options the only problem with this ink is that it is not waterproof and can be washed from the surface without lamination or specialized coating to safeguard some of it. Aqueous inks may also be inexpensive to manufacture.
UV curable inks:
UV curable inks have acrylic monomers coupled with an initiator package. Following the printing job is completed the printed materials are subjected to strong UV light which cures a lot of it. Lower than replacement this ink would it be dries quickly and also the disadvantage is they are extremely expensive.
These are generally a number of the several types of inks applied to commercial printing services.
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