Glossary of papermaking terms

Paper making process

Chemical wood pulp Wood reduced to pulp by a chemical process, e. Broke Machine trim or undesirable paper that is returned to the beaters. Band 1 A strip of paper, printed or unprinted, that wraps around loose sheets in lieu of binding with a cover or assembled pieces. Basic Size The standard sheet size of a given grade. Blister Pack This term describes a packaging system, which is a combination of board and plastics. It can be stationary or revolving, horizontal or upright, cylindrical or spherical. Biosludge Sludge formed in the aeration basin during biological waste water treatment or other biological treatment process Bisulfate Pulp Pulp made by the bisulfate cooking process using bisulfate cooking liquor. Cloudy Formation Same as cloud effect; cloudy. Converter Company that converts paper from its original form to usable products such as envelopes, label stock, announcements etc. Blocking The adhesion of one coated sheet to another, causing paper tears or particles of the coating to shed away from the paper surface.

O Check each sheet of paper for defects. Booklet A printed piece bound together, containing a few pages. Calender Stacks A vertical series of steel rolls at the end of the paper machine to increase the smoothness of the paper.

Paper free from any acid content.

Paper making machine

Cotton Content Paper Papers utilizing cotton linters. Grade depends upon the purpose for which the blank book will be used. Cross Machine Direction A line perpendicular to the direction the paper travels through the papermaking machine. Deckle On a hand mould this is the removable frame which retains the pulp on the cover while the water drains through. Usually caused by high drying temperatures, high paper moisture, or low internal bond strength. Plants and plant components Biofuels Renewable fuels for example from wood and bark. In a printing project, usually a bleed will cost more to produce than a piece that does not bleed. Cover Paper Durable, heavier weight papers, available in a variety of finishes and colors, used for the cover of pamphlets, annual reports, business cards, etc… Crop Marks Specifically placed marks attached to artwork that show the area to be printed. Hollander Another name for Beater, introduced mid seventeenth century and superseded the method of preparing pulp by hammering or stamping the rags. Correspondence Papers Writing papers in attractive finishes, weights or colors.

Blister A defect on a paper surface often shaped like a human blister. Soap sizing Achieving resistance to water penetration by adding the sodium salt of rosin at the wet end Species The form or forms that a chemical may take when equilibrating with an aqueous solution, e.

Glossary of papermaking terms

Booklet A printed piece bound together, containing a few pages. Blade Coated Paper Paper coated by a process in which the freshly applied coating film is smoothed and the excess removed by a thin, flexible metal blade. Biological Waste Water Treatment A method of cleaning up wastewater using living microorganisms such as bacteria. Coating The Liquid mixture applied to the surface of paper to make it more suitable for some methods of printing. Color Scanner electronic scanner A scanner that makes the color separation required in full color processing printing. Cellulose Basic chemical compound of paper manufacture derived from plant tissues. High bulk sheets have fewer sheets per inch than low bulk. Papers manufactured with chemical pulp are called "free-sheet" papers. Blanket-To-Blanket A printing method in which a sheet of paper is passed through two blanket cylinders and is printed on both sides. Blotting Paper Bulky, absorbent, filler-free paper, which is mostly produced from pure cotton in the form of bleached linters and from chemical pulp. Glaze Gloss or polish on a sheet of paper. Black Photo Paper A black paper used to protect photosensitive materials. Also referred to as Cross direction or Cross grain.

Comprehensive Proof Final proof presented in the format the printed piece will take. Coated papers Paper to which a coating has been applied on one or both sides, using a mix of clay or carbonates and bound by Casein, latex or starch to create a high quality printing surface.

paper making

Bible Paper A thin and strong paper opaque with high filler content, used for bibles and books. Curl Deformation of a sheet of paper or board over its entire surface, which therefore tends to roll up into the form of a cylinder.

Bleached Pulp Pulp that has been bleached by means of chemical additives to make it suitable for white paper production.

types of paper

Beater Colored A method of dyeing paper stock by adding coloring to the pulp in the beater.

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Glossary of Paper Terms