Measure of a paper's durability when subject to abrasive action of erasers.

Property of paper causing it to scratch surfaces it contacts.

The ability of paper to absorb or take in liquids.

A technique to estimate the permanence of paper by exposing it to heat or heat and moisture.

Rosin size containing a large proportion of emulsified, free or uncombined rosin. (See rosin size)

Degree of acid found in a given paper measured by the pH factor. pH is measured from 0 to 14, with 7 representing neutral between acid and alkaline. From 0 to 7 is considered acid as opposed to 7 to 14 which is alkaline.

Accurate weight of a given quantity of paper, which is different from the same paper's nominal weight. (See nominal weight.)

Paper in roll form for use on adding and tabulating machines. Weight: 16 to 18 lbs. 17 " x 22"/500 sheets.

Qualities having to do with the beauty of the printed image.

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) thereby representing every major sector of the national forest products industry. AF&PA represents member companies which grow, harvest and process wood and wood fiber, manufacture pulp, paper and paperboard products from both virgin and recovered fiber and produce solid wood products in the United States.

In reference to printing, the tack of ink after apparently being dried.

Folding or feeding paper at right angles to the grain or direction in which the fibers lie.

Paper commonly used as end papers in books.

Coating subjected to a thin jet of air. Air jet removes excess coating and smooths surface of freshly coated paper. (Same as air knife coating)

Coating sprayed on web of paper by air pressure.

In the process of air-drying, paper is dried on the paper machine and reeled as a damp roll. Or the web of paper may be passed through a vat or surface-sizing procedure one step before entering the air dryer. In each case, the damp web passes slowly through an enclosed chamber or tunnel through which hot air circulates. The web is supported on slats or festooned over rollers. This way, the web of paper dries without tensions. It is not influenced by the smoothing effect of paper machine dryers and felts. Consequently, a harder, rougher surface results in a cockle finish. The characteristic, dignified appearance of high grade bonds and ledger papers is the products of air drying.

Usually refers to blank cover paper and used for making photographic albums.

Offset printing plate coated with light-sensitive albumen. Image is formed by the action of light through a photographic image.

In forms layout, preprinted mark on a form used to assist the user in positioning the form so that entries are accurately positioned.

Paper that resists discoloration through contact with alkaline substances, such as soap. Glassine and waxed papers are also used for such purposes.

Highly refined wood pulp with exceptional paper making properties: high chemical purity, high brightness, great permanence and unusually high resiliency.

Board coated with aluminum foil.

Method of finding the nature and amounts of ingredients in paper.

Letterpress printing process in which the ink contains rapidly evaporating solvents. Printing plates for this process are ordinarily made from rubber. Process is used for printing bread wrappers, confectionery wraps, bottle wraps and gummed tapes.

Glue and gelatin extracted from animal hides and used as a papermaking size. (See size).

Folded cards or sheets of paper fitting matched envelopes and generally used for social stationery and announcements.

Rough paper finish created by reducing pressure at the wet presses and with little calendering. Term describes a rougher than usual finish when used as a prefix as in Antique Vellum and Antique Eggshell.

Paper which has a high finish on one side and an antique finish on the other.

American Pulpwood Association. Fosters education and provides leadership and assistance for the continuing development, use, and renewal of the United States' forests, and for meeting the nation's persistent and future needs for pulp, paper, paperboard and other forest products.

Weight per unit volume of a sheet of paper obtained by dividing the basis weight by the caliper.

Acid-free paper made to resist disintegration and used for documents that must last.

Usually refers to coated paper for printing halftones.

Greaseproof paper with a parchment-like finish.

Bristol, pasted, solid or filled suitable for pencil drawings, pen-sketching or water color painting. Color, finish, rigidity and freedom from warping are principal characteristics.

Superior paper for drawing, made with a close weave.

The mineral residue left after burning a sample of paper to determine the percentage of filler it contains.

Air including all its constituents: oxygen, nitrogen, carbon dioxide, rare gases, dust and moisture.

A second roll stand, for use on a web press, that can be mounted on top of another roll stand. Reduces downtime since it permits one stand to be reloaded while another continues to unwind.