Glossary of papermaking terms

Additives Clay, fillers, dyes, sizing and other chemicals added to pulp to give the paper greater smoothness, color, fibered appearance or other desirable attributes. A measure of the amount of chlorine that is chemically bound to the soluble organic matter in the effluent.

Glossary of papermaking terms

Additional pressure applied through the impression cylinder assisting the image transfer to the press sheet. Backbone The back of a bound book; also called the spine.

Backing Up Printing the reverse side of a sheet already printed on one side. Tortilla and Mesa White.

Glossary of papermaking terms

Rolls are normally checked for baggy areas by striking with a baton and listening for variations in audible pitch. Band 1 A strip of paper, printed or unprinted, that wraps around loose sheets in lieu of binding with a cover or assembled pieces.

Barium Sulfate Substance used as a standard for white, in lieu of the availability of a practical percent reflecting diffuser. Baronial Envelope An envelope generally used with announcements. Base Color A first color used as a background on which other colors are printed.

Base Stock Manufactured paper that will be further processed as laminated, Duplex Cover, Bristol Cover, or off machine embossed papers. Baseline In typesetting, the invisible line on which letters and numbers set.

Basic Size The standard sheet size of a given grade. Basis Weight The weight in pounds per ream of paper cut to its basic size in inches. A metric system is used outside of North America. Beater Blendertype machine used to pulverize pulp and for mixing additives and color to the stock.

Beater Sized Process of adding sizing material to the pulp in the beater. Bindery A process of perforating, folding, trimming and eventually binding a printed piece. Binding 1 Attaching sheets into a single unit by adhesives, sewing, stitching, metal prongs, snaps, etc.

The operations that comprise collating, perforating, and folding the elements of a form into the finished product. Binding Edge The edge where the binding will be done. Black Printer In fourcolor process printing, the black plate made to give definition to neutral tones and detail.

Blanket In offset lithography, the rubbercoated fabric clamped around the blanket cylinder, which transfers the image from plate to paper. Blanket Contamination Unwanted matter that becomes attached to the offset blanket and interferes with print quality. Blanket Ceep Movement of the blanket surface that comes in contact with the printing plate or paper.

Blanket Cylinder The printing press cylinder on which the blanket is mounted. Blanket Pull The tack between blanket and paper. Bleach Chemical, usually chlorine, used to whiten pulp. Bleaching Chemical treatment to brighten, whiten, purify, refine, and balance pulp fiber.

Glossary of papermaking terms

Bleed 1 In printing, printed image that runs off the edges of a page. Blind Embossing A printing technique in which a basrelief design is pushed forward without foil or ink. Blocking The shearshim of piled printed sheets caused by wet ink.

Blocking Out Eliminating portions of negatives by opaquing the image.Alkaline papermaking: Process of producing papers under neutral or alkaline conditions. The major force behind the conversion from acid to alkaline papermaking is the greater strength of the alkaline sheet, which permits higher levels of clay and calcium carbonate filler.

Papermaking starch that has been processed generally by oxidation, to achieve lower viscosity or chemical characteristics which are beneficial in use as an additive in papermaking.

Moisture Content The amount of moisture or water in a sheet of paper, expressed in percent. 6 to 7% is desirable. Mini-Encyclopedia of Papermaking Wet-End Chemistry. GLOSSARY: Short Definitions and Some Links to More Information. Term: A papermaking system to which so much cationic material has been added that the zeta potential is reversed to strongly usually defined in terms of the angle of contact of a flat solid with an air-liquid interface.

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To assist with understanding the information presented we have included a glossary of papermaking terms.

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This covers all aspects of papermaking: processes, materials and additives. Alkaline papermaking Papermaking at a pH of 7 or higher is referred to as alkaline papermaking.

Due to the use of calcium carbonate as a filler. Paper product terms, paper production glossary, paper technology, paper definitions from Glatfelter global provider of quality paper products, engineered paper products, and specialty papers.

Glossary of papermaking terms |