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A0 |
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An ISO 'A' series paper size - 841x1189 mm or 33.11x46.81 inches or 2384x3370 points (widthxheight) |
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A1 |
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An ISO 'A' series paper size - 594x841 mm or 23.39x33.11 inches or 1684x2384 points (widthxheight) |
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A2 |
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An ISO 'A' series paper size - 420x594 mm or 16.54x23.39 inches or 1190x1684 points (widthxheight) |
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A3 |
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An ISO 'A' series paper size - 297x420 mm or 11.69x16.54 inches or 842x1190 points (widthxheight) |
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A4 |
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A common ISO 'A' series size of about 8-¼ by 11-¾ inches or 210x297 mm or 595x842 points. Used as the standard cut-paper size outside of the United States. The US equivalent is a letter size (8.5 x 11 inch) paper. |
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A5 |
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An ISO 'A' series paper size - 148x210 mm or 5.83x8.27 inches or 420x595 points (widthxheight) |
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A6 |
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An ISO 'A' series paper size - 105x148 mm or 4.13x5.83 inches or 298x420 points (widthxheight) |
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A7 |
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An ISO 'A' series paper size - 74x105mm or 2.91x4.13 inches or 209x298 points (widthxheight) |
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Abaca |
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A plant commonly known as manila hemp. |
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Abrasion Resistance |
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A measure of paper's durability when subject to abrasive action. |
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Abrasive Paper |
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A type of paper that is coated on one or both sides with abrasive powder such as emery.
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Abrasiveness |
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A property of paper causing it to scratch the surface it contacts. |
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Absolute Moisture |
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The absolute moisture of the air is the maximum amount of water vapor, the air can contain before the excess water is released as dew. Absolute moisture is measured in grams per cubic meter. |
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Absorbable Organic Halogen (AOX) |
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The amount of chlorine chemically bound to soluble organic matter in the effluent. |
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Absorbency |
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The ability of a paper or board to take up and retain liquids such as water or ink. |
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Absorbent Core |
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The principal fluid-holding component of disposable hygiene products. Absorbent cores usually contain a combination of fluff pulps and super-absorbent polymers. |
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Absorbent Papers |
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A grade of paper that takes up and retains liquids such as duplicator, blotting, filter papers, and toweling. |
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Accelerated Aging Test |
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A technique to estimate the permanence of paper by exposing it to simulated conditions of heat, moisture, and/ or chemicals. |
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Accept |
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Fibrous raw material accepted after cleaning and/or screening for further processing in papermaking. |
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Accordion Fold |
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A type of paper fold in which each fold runs in the opposite direction to the previous fold creating a pleated or accordion affect. Accordion folds are used on products such as catalogs, brochures, and maps. |
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Acetate Pulp |
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A high alpha cellulose pulp made especially to be dissolved in acetic acid, acetic anhydride, and sulfuric acid for making acetate rayon and acetate fibers. |
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Achromatic |
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Materials that are white, gray, and black with no color or hue. |
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Acidfree Paper |
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A type of paper, which does not contain any acidic substance that may affect acid sensitive material. Such papers are used for archival purposes. |
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Acid Migration |
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Transfer of acid from an acidic material to a less acidic or neutral-pH material. Acid can also migrate from adhesives, boards, protective tissues, paper covers, etc. |
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Acid Paper |
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A type of paper that has clay as the predominant filler and an acidic rosin-aluminum mixture as the internal sizing agent. |
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Acid Proof Paper |
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A type of paper that is not affected by acid physically or chemically. |
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Acid Size |
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Rosin size containing a large proportion of emulsified, free, or uncombined rosin. |
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Acidic Sizing |
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Internal sizing carried out in acidic pH range (0-7). Examples of acidic sizing are rosin and alum sizing. |
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Acidity |
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Degree of acid found in a given paper measured by the pH factor. Paper can become acidic from the ingredients used in its manufacture, from the environment or both. |
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Actinic Rays |
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Light exposure that affects chemical changes in paper. |
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Activated Sludge Treatment |
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A biological method of cleaning up waste waters in three stages. |
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Active Alkali (AA) |
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Caustic soda (NaOH) and sodium sulfide (Na2S) expressed as Na2O in Kraft pulping liquor. |
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Actual Weight |
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Accurate weight of a given quantity of paper, which is different from the same paper's nominal weight. |
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Adding Machine Paper |
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Paper in roll form for use on adding and tabulating machines.
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Additive Colors |
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In photographic reproduction, the primary colors of red, green, and blue which are mixed to form all other colors. |
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Additives |
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Fillers, dyes, sizing, and other chemicals added to pulp or coatings to impart the paper greater smoothness, color, opacity or other desirable attributes. |
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Aerate |
| | Refers to a process in which an air stream is blown onto paper sheets to separate the sheets as they are fed to the printing press. |
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Aerated Lagoon |
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A biological wastewater treatment method in which air (oxygen) fed into an aeration basin to reduce the BOD, COD, and AOX content of the effluent. |
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Aerogramme |
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A single sheet of paper folded and gummed on three sides. Bears international preprinted air postage and the word “aerogramme" Intended for airmail correspondence to other countries. |
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AF&PA |
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American Forest & Paper Association, established in 1993, merged the activities of the American Paper Institute (API), National Forest Products Assn. (NFPA), and American Forest Council (AFC). |
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Against the Grain (Cross Direction) |
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Cutting, folding, or feeding paper at right angles to the grain or machine direction of the paper. |
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Aging |
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Irreversible deterioration on of paper properties over time. Sunlight and heat accelerate the loss of strength and brightness. |
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Agitator |
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Equipment used to keep content of a tank or chest in motion and well mixed. |
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Air Blade Coating |
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Coating subjected to a thin jet of air. Air jet removes excess coating and smoothes surface of freshly coated paper. (Same as air knife coating) |
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Air Brush Coater |
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A coater, which uses the pressurized air to atomize the coating mixture and spray it on the paper. |
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Air Dry |
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Refers to any pulp and paper sample that has its moisture content in equilibrium with the surrounding atmospheric conditions. Conventionally, air-dry pulps are assumed to contain 10% moisture. |
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Air Drying |
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Method of drying the paper web on the paper machine by blowing air along the direction of the web. |
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Air Filter Paper |
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A type of paper used for filtration of air to remove suspended particles. (For example car air filter, vacuum bag etc.) |
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Air Knife Coater |
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A device that applies an excess coating to the paper surface and then removes the surplus by impinging a flat jet of air upon the fluid coating, leaving a smooth film on the paper.
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Air Knife Coating |
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A method of coating using an air-knife which acts on the principle of a doctor blade and uses a thin, flat jet of air for removing the excess coating from a wet, freshly coated sheet of paper. |
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Airmail Paper |
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It is lightweight, high opacity, good quality writing / printing paper for airmail. Generally produced in white, off white or a pale blue for stationery purposes, usually below 40 g/m2 for reasons of postage costs. |
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