Paper Products Glossary
Base paper (Body Stock): The base stock for plain or decorated coated papers and boards. It may be uncoated or pre-coated on the paper machine.
napkinsBond paper: Originally a cotton-content writing or printing paper designed for the printing of bonds, legal documents, etc., and distinguished by superior strength, performance and durability. The term is now also applied to papers such as letterhead, business forms, social correspondence papers, etc.
Construction paper: Sheathing paper, roofing, floor covering, automotive, sound proofing, industrial, pipe covering, refrigerator, and similar felts.
Containerboard: Solid fiber or corrugated and combined board used in the manufacture of shipping containers and related products.
Corrugated container: The most common type of box manufactured from containerboard, layers of linerboard and one layer of medium. The layers are combined on a corrugator, a machine that presses corrugations into the medium and laminates a layer of linerboard to each side. The sheets are folded, printed, and glued or stapled to make a finished box.
Corrugating medium: A paperboard used by corrugating plants to form the corrugated or fluted component in making corrugated combined board, corrugated wrapping, and the like. It is usually made from chemical or semi-chemical wood pulps, straw, or reclaimed paper stock on cylinder or fourdrinier machines.
Chipboard: A paperboard used for many purposes. It is normally made from a paper stock with small thickness.
papertowelCotton fiber: Paper that contains 25 percent or more cellulose fibers derived from cotton linters and cotton or linen cloth cuttings.
Cover paper: Any wide variety of fairly heavy plain or embellished papers, which are converted into covers for books, catalogs, brochures, pamphlets, etc. Characterized by good folding qualities, printabililty, and durability.
Cylinder paper machine: One of the principal types of papermaking machines, characterized by the use of wire-covered cylinders or molds. The pulp fibers are formed into a sheet on the mold as the water drains through, leaving the fibers on the cylinder face. The wet sheet is couched off the cylinder onto a felt, which is held against the cylinder by a couch roll. A cylinder machine may consist of one or several cylinders, each supplied with the same or with different kinds of stock. In the case of a multi-cylinder machine, the webs are successively couched one upon the other before entering the press section. This permits wide latitude in thickness or weight of the finished sheet, as well as in the kind of stock used for the different layers of the sheet. The press section and the dry end of the machine are essentially the same as those of other types of machines.
Deinking: A process in which most of the ink, filler and other extraneous material is removed from printed and/or unprinted recovered paper. The result is a pulp which can be used, along with varying percentages of wood pulp, in the manufacture of new paper, including printing, writing and office papers as well as tissue.
Digester: A cylindrical or spherical vessel used to treat cellulosic materials with chemicals under elevated pressure and temperature to produce pulp for papermaking.
Envelope paper: Any uncoated printing-writing paper used in the manufacture of envelopes. Desirable properties include smooth fold, strength at crease, good printability, and lack of tendency to curl.
Brown kraft envelope: Fourdrinier machine-finished or machine-glazed paper usually made from unbleached sulfate pulp or dyed bleached sulfate pulp, used in the manufacture of envelopes when strength is a primary requirement.
White kraft envelope: Fourdrinier machine-finished or machine-glazed paper usually made from bleached sulfate pulp, in white and colors. It is used in the manufacture of envelopes when strength is a primary requirement.
Woven envelopes: General purpose paper, either white or colors, used primarily for commercial purposes. Also refers to commodity envelope base stock. Bond, cotton fiber, text grades, and similar distinctive grades used for envelope end use are not included in this category; rather they are included with their unique grades.
Form bond: A lightweight commodity paper designed primarily for printed business forms. It is usually made from chemical wood and/or mechanical pulps. Important product qualities include good perforating, folding, punching, and manifolding properties. The most common end use for this grade is carbon-interleaved multi-part computer printout paper, which is marginally punched, crossperforated, and fanfolded.
Fourdrinier paper machine: Named after its sponsor, with its modifications and the Cylinder machine, comprise the machines normally employed in the manufacture of all grades of paper and board. The fourdrinier machine, for descriptive purposes, may be divided into four sections: the wet end, the press section, the drier section, and the calender section