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Pad |
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A solid fiberboard or corrugated sheet used for extra protection or for separating articles when packed for shipment. |
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Page Makeup |
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The assemblage of all the necessary elements required to complete a page. |
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Pages Per Inch (PPI) |
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Number of papers sheets in a inch-thick stack of paper. This term used frequently in book production. |
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Pallet |
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A platform used to facilitate the movement of paper in storage or transit, which can be moved by a lift truck. Pallets are made up of wood, paperboard, or plastic. |
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Panchromatic |
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Films and other photographic materials those are sensitive to all colors. |
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Panel |
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A panel is a ‘face’ or ‘side’ of a box. |
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Paper |
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A web of cellulose fibers, bound together by interweaving and by the use of bonding agents. Paper is used for writing, printing, wrapping, packaging, decorating, wiping etc. |
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Paper Foil |
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A paper laminated with metal foil. |
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Paper Grade |
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Papers manufactured to fit within a group of papers. Paper is classified into different grades according to the end use, the pulp type, and the treatment of the paper. Each grade of paper uses essentially the same type of fiber, colors, additives etc. |
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Paper Merchant |
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A company, which purchases paper from a paper mill for resale to end-users. Merchants usually warehouse the products and then sell it to end-users. |
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Paper Micrometer |
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An instrument used for measuring the thickness of paper. |
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Paper Stock |
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A slurry of pulp fibers, water, additives, chemicals, and dyes that is pumped onto the papermaking machine to form paper. |
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Paperboard |
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A generic term that refers to high-grammage and high-caliper papers. It is intended to be a rigid, durable form of paper, often used in packaging. Some examples include cereal boxes, shoe boxes, folding cartons, setup boxes for jewelry, milk and juice cartons, etc. |
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Papeterie |
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A high-grade soft paper used greeting cards and stationery. |
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Papyrus |
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An ancient writing material made from the stem of the papyrus plant. The word ‘paper’ is derived from papyrus. |
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Parchment |
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A type of paper that resembles animal skin. It is used for documents, such as awards, that require writing by hand. Parchment paper has a high resistance to the penetration of grease. |
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Parchmentization |
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A method of treating a paper sheet with sulphuric acid to make it greaseproof |
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Parent Roll |
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A roll from the paper machine, which is later slit into smaller rolls. |
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Parent Sheet |
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A sheet of paper, which is larger than the cut stock of the same paper. |
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Paris White |
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A pure form of calcium carbonate. |
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Particulates |
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Airborne impurities present in gaseous emissions such as lime, soot, calcium carbonate etc. |
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Paste Drier |
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Compounds used for enhancing drying of printing inks. |
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Paste Ink |
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An ink with a high level of viscosity. |
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Pasteboard |
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A general term for cardboard formed by pasting layers of pulp board together. |
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Paster |
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A unit that pastes sheets of paper to produce pasted paper grades. |
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Patent Coated |
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Paperboard lined on one or both sides with white or colored fibers to improve the surface. Such board is manufactured on a multi-cylinder machine. |
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Pattern Carbon |
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Carbon paper that has its coating applied in a special way. Pattern coating is applied by a process similar to printing than coating. |
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Pattern Paper |
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A type of high-strength paper used by designers and tailors for making patterns. |
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Pebbling |
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Pebbling is a process, which imparts a grainy surface to finished paper. Pebbling is done after when the paper has been manufactured. |
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Peeling |
| | Peeling or scuffing is the surface scaling on the sheet of paper. |
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Perfect Binding |
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A binding method used to put together a large number of pages into a book form by a flexible adhesive. For example, most phone books are perfect bound. |
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Perfecting Press |
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Perfecting press or a perfector is a printing press that prints on the both sides a sheet of paper in a single pass. |
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Perforating |
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A process done during or after printing to punch small holes in the paper. |
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Permanence |
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Permanence refers to paper's ability to maintain physical properties with time, such as brightness, strength, color, and folding endurance. Prolonged exposure to humidity, light, and adverse temperatures affect the permanence of paper. |
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Permanent Paper |
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A paper that can resist large chemical and physical changes over time. This type of paper is made from bleached chemical pulps and is generally acid-free, neutral, or alkaline sized. It may contain calcium carbonate as a filler. |
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Permeability |
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The ability of paper to allow passage of a gas, liquid or vapor through it. |
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Pernicious Contraries |
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Foreign material in waste paper that is difficult to detect and which might cause damage to the papermaking equipment. |
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Peroxide Bleaching |
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A method of bleaching pulp with hydrogen peroxide (H2O2) to remove lignin. Peroxide bleaching avoids or reduces the chlorine dioxide demand. |
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pH |
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A measure of acidity, neutrality, or alkalinity of materials such as paper and printing inks. On a scale of 0 to 14, a pH of 7 is neutral. Acids a have pH value below 7 while alkalis a have pH value above 7 (up to 14). |
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pH Neutral Paper |
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Paper made from a pulp having a pH of 6.5 to 7. |
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Phenolic Resin Impregnated Paper |
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Paper saturated with phenolic resin and used as a binder for cores and sand moulds. |
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Photographic Paper |
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A dimensionally stable, chemically-neutral paper with wet-strength properties which is used as a base paper for photographic papers. |
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Photosetting |
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The process of composing text matter directly onto a photographic film or other light sensitive material. |
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Phthalocyanine |
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A pigment used for manufacturing the cyan ink. |
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PIA |
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Printing Industry of America. |
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Picker |
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A person who examines the finished paper for defects in it. |
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Picking |
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The release of fibers, fines or coating flakes from the paper surface during papermaking or printing. Picking occurs during printing when ink tack is greater than the surface strength of paper. |
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Picking Resistance |
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Ability of a paper surface to resist picking by tacky inks during the printing process. |
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Pick-Up |
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The roll, which lifts the paper web off the wire before the pressing section. |
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Pigment |
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Mineral and inorganic compounds used to coat paper to enhance its surface properties. |
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Pigmentizing |
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Coating of paper with pigments to reduce surface porosity and increase opacity. |
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Piling |
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The build-up of material from paper on the calendar roll or printing blanket. |
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PIMA |
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Paper Industry Management Association. |
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Pinfeed |
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A device that controls flow of paper into a machine by engraving pins. |
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Pinholes |
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Any small holes through paper or coating extending mainly through the stock; they are of pinpoint size. |
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Pitch Holes |
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Pitch holes are caused by pitch plugging the forming fabric at the wet-end of paper machine. |