What is Aqueous Coating?Written by Maricon Williams
An aqueous coating is a fast-drying, water-based, protective coating which is applied in-line on press to attain a selection of finishes more economical price than varnish.This clear coating provides a high gloss surface which protects surface from dirt, smudges, fingerprints and scratch. Aqueous coating improves postcards durability as they go through mail or inserted in pockets. It is also applied on brochures, catalog covers, flyers and other visual ads. Aqueous coatings are applied to printed sheet right after inks. Directly after coating is applied, sheets are sent through a heated air system that quickly dries coating. The printed sheets can progress to finishing department in a matter of minutes, as opposed to traditional varnishes which may need hours or even days to dry. This type of coatings provide marvelous rub and scuff resistance. They give protection that far exceeds standard varnishes. It protects product from harmful elements from shipment through to end use. They are available in gloss and matte finishes. In http://www.airportprinting.com, it discussed several pointers about aqueous coating. “A variety of finishes can be produced in a flood coating, as follows: High Gloss Coating is glossiest finish but can coat only one side of sheet. Regular Gloss Coating produces a shinier finish than a gloss varnish, but not as glossy as High Gloss.” One of its remarkable advantages is that you can coat both sides of sheet.
| | Simplified Explanation of Different Coated Paper Types?Written by Maricon Williams
Paper has a lot of properties that should be taken into account to achieve excellent quality that we seek. First is contrast. Contrast is key element between paper and toner. The paler or whiter paper, brighter graphics and text will be. Second element is texture. The smoother paper is, easier toner can transfer to it. Nevertheless, very smooth papers are sometimes difficult to feed.Coated papers are best suited for high quality printing tasks. It comes in a few varieties. Paper may be gloss coated, dull-coated, machine-coated or cast-coated. To make a gloss-coated sheet, matte-coated paper is supplementary processed by calendaring, a process where paper is run through a stack of highly polished steel rollers which condenses and evens out surface inconsistencies. Dull-coated is made when a clay or chemical solution is added. When a clay solution is added to a base stock, paper is considered matte-coated. Machine-coated is a sheet made smooth by a blade running over it during manufacturing process. The last, cast-coated, is a high-gloss coating used for highest quality premium papers on one or both sides. Printing ink does not soak into a coated sheet as much as it does with an uncoated paper, so coated papers can make halftones and color images look richer. Coated papers are associated with corporate capability brochures and annual reports. Since coated papers come in several grades and prices, you should not have to shy away from using them. Today, more and more coated papers are recycled, which also lowers their costs.
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