Glossary of Terms

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b* (ClE Starlab):   Refers to the system used to describe and measure color. b* indicates yellowness, a positive value, and blueness, a negative value.
Baking: A term given to the procedure of drying coatings onto papers.
Bank Paper: A thin, uncoated stock used for making carbon copies.
Barking Drum: Large rotating cylinder in which pulpwood logs are tumbled against one another to remove the bark.
Barrier Coat: A coating that is applied onto the non-printing side of paper to add to the opacity of the paper.
Base Paper: The paper for coating or other types of finishing including laminating and consisting mainly of fibers, but may contain other additives depending on its use. For example, for coated printing papers it will contain filler and sizing, but may also be surface sized.
Basic Size: (U.S.) The one size in each category of paper that is used to establish the weight of the sheet. Basic sizes differ from category to category. Bond and ledger papers have a basic size of 20 x 26 in.; book, offset, and text papers have a basic size of 25 x 38 in.
Basis Weight: The weight in pounds of a ream of paper, typically consisting of 480, 500 or 1,000 sheets of a specified size.
Beater: Large, longitudinally partitioned vat used to mix and mechanically work pulp with other ingredients to make paper.
Beating: The mechanical treatment of the fibers in water to increase surface area, flexibility and promote bonding when dried.
Bible Paper: Thin printing paper for use in deluxe productions such as bibles, dictionaries and high-quality publicity productions.
Biochemical Oxygen Demand: The amount of dissolved oxygen parts per million utilized in the aerobic biochemical oxidation of the decomposable organic matter in mill wastewater.
Bisulfate Pulp: Pulp made by the bisulfate cooking process using bisulfate cooking liquor.
Bleaching:   Pertains to the type of bleaching the pulp has been exposed to. The three types are ECF, Non-ECF and TCF.
Blister Pack: This term describes a packaging system that is a combination of board and plastics. The board, usually made from lower grades of waste paper, can be lined in whole or in part on one or both sides, to carry a printed message or advertising. The product is sealed to the board by a transparent plastic film. This system is often used for small products with difficult shapes and sizes.
Blistering: Small eruptions in a paper's coating, usually from paper being dried too quickly on high-speed web offset presses.
Blotting Paper: Very absorbent and bulky, woodfree paper, sometimes made from a pulp of cotton or wool fibers.
Board: Papers of 220 g/m2 and over are generally called boards. They are often of more than one ply.
Bogus: Product made from wastepaper or other inferior materials in an imitation of higher-quality grades.
Book Paper: A term for papers used in the commercial, book and publication segment of the printing industry.
Bond: Class of printing/writing papers made form bleached chemical woodpulps and cotton fibers.
Bond Strength: An intralayer binding force in a paperboard or laminate. This term also refers to the degree of adherence of coating and film on a sheet and to the binding force in a sheet.
Bone Dry (b.d.): This term refers to the moisture-free conditions of pulp paper. It also refers to air containing no vapor.
Box Cover Paper: A lightweight paper used expressly for covering paper boxes.
Box Enamel Paper: A glossy coated paper used to cover paper boxes.
Box Liners: A coated paper used on the inside of boxes, which are used for food.
Breaking Length:   A mathematical calculation based on paperís tensile strength and grammage. This represents the theoretical length of a uniform width of paper that, when suspended by one end, would break by its own weight.
Brightness: The percentage of reflectance or brilliance of paper when measured under a specially calibrated blue light. Defined as the amount of blue-white reflectance compared to magnesium oxide, which is considered 100% bright.
Bristols: A heavyweight paper possessing higher-than-average quality characteristics.
Brocade: A heavily embossed paper.
Broke: Paper trimmings or paper damaged from breaks on the paper machine and in finishing operations.
Bulk: A measurement of the density of a sheet of paper.
Burst Factor:   The resistance of paper to rupture when pressure is applied to a side by a specified instrument.
Bursting Strength: The resistance of paper to rupture when pressure is applied to a side by a specified instrument. This is also referred to as burst and pop strength.



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