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WATERMARK
A deliberate design or pattern in paper made by a dandy roll as the stock passes through the wet end processes. A watermark can be seen by holding the paper up to the light.
WET END
The first stages of a papermaking machine before the drying procedure. At the wet end, stock is fed in and much of the high percentage of water is eliminated by drainage, suction and press rollers, leaving a web of paper which then passes to the drying cylinders.
WET-ON-WET
Also known as Wet-in-wet, is a painting technique in which layers of wet paint are applied to previous layers of wet paint. This technique requires a fast way of working, because the art work has to be finished before the first layers have dried. In traditional painting methods new layers were applied to most parts of a painting only after allowing the previous layer to completely dry. This drying process could vary from several days to several weeks, depending on the thickness of the layer.
WET STRENGTHENED PAPER
The ability of paper to maintain a percentage of its tensile strength when it has been saturated with water. It possesses properties that are resistant to rupturing and disintegrating.
WET STRENGTH RETENTION
The ability of paper to maintain a percentage of its tensile strength when it has been saturated with water. It possess properties that are resistant to rupturing and disintegrating. When a paper is saturated with water, it has wet st
WIRE SIDE
The face of a web or sheet of paper that was in contact with the forming wire during production.
WOOD FREE
Paper made completely from chemical pulp and free from wood-based impurities, such as lignin, which are present in mechanical pulp.
WORK AND TUMBLE
Printing method on one side of the sheet, then turning the sheet over, retaining the same sidelay edges but reversing the front and back edges, and using the same printing plate.
WORK AND TURN
A printing method where different pages are assembled so that they are on one plate. One side is printed and then the sheet is turned over so that you are using the same gripper edge and then the second side is printed. The product is then cut apart to make two finished items
WOVE PAPER
Paper with a wove finish. One of the most common papers used for general printing .Paper first made as early as 1754 by forming it on a mold with a cover made from woven wire cloth, hence “wove paper,” the paper has no watermark and an even opacity.
