A | |||
a* (ClE Starlab): | Refers to the system used to describe and measure color. a* indicates redness, a positive value, and greenness, a negative value. | ||
![]() |
|||
![]() |
Abrasion Resistance: | ![]() |
The ability of a paper product to withstand abrasion. The degree and rate a sample loses weight under specific rubbing action by an abrading surface measures resistance. |
![]() |
|||
![]() |
Abrasive Papers: | ![]() |
Papers covered on one or two sides with abrasive powder. |
![]() |
|||
![]() |
Absorbency: | ![]() |
Property of pulp, paper or board to retain materials it contacts such as liquid, gas and solid substances. |
![]() |
|||
![]() |
Absorbent Papers: | ![]() |
Examples include duplicator, blotting, filter papers, drying royal, matrix paper and toweling. |
![]() |
|||
![]() |
Accepted Stock: | ![]() |
Part of stock that is not rejected by cleaning and/or screening. |
![]() |
|||
![]() |
Acrylic: | ![]() |
A water-soluble polymer used in paints to make them dry to a tough and flexible consistency. |
![]() |
|||
![]() |
Additive: | ![]() |
A mineral, chemical or dye added to pulp and coatings to give it special qualities such as opacity. |
![]() |
|||
![]() |
Against the Grain: | ![]() |
Folding or feeding paper at right angles to the grain direction of the paper. |
![]() |
|||
![]() |
Aging: | ![]() |
The deterioration of paper properties over time. Sunlight and heat accelerate loss of strength and brightness. |
![]() |
|||
Air Dry: | Term applied to any pulp and paper sample that has a moisture content in equilibrium with the surrounding atmospheric conditions. Air-dry pulps are assumed to contain 10% moisture. | ||
![]() |
|||
![]() |
|||
![]() |
Album Paper: | ![]() |
Wood pulp paper with an antique finish used for photo album pages. |
![]() |
|||
![]() |
Alum: | ![]() |
A papermaking chemical used for precipitating rosin size onto pulp fibers to impart water-resistant properties to the paper. It is also called aluminum sulfate. |
![]() |
|||
![]() |
Antiquarian: | ![]() |
The largest available handmade paper (53 x 31 inches). |
![]() |
|||
![]() |
Antique: | ![]() |
A printing paper with a rough finish but good printing surface. It is valued in book printing for its high volume characteristics. |
![]() |
|||
![]() |
Antitarnish Paper: | ![]() |
A term originally applied to higher-weight tissues used for wrapping silverware, but now used for all papers prepared so they will not rust or discolor razor blades, needles, silverware, etc. |
![]() |
|||
![]() |
Apparent Density: | ![]() |
Weight (mass) per unit volume of a sheet of paper obtained by dividing the basis weight by the caliper (thickness). |
![]() |
|||
![]() |
Archival Paper: | ![]() |
A paper that can last normally 100 years. The paper is acid free, lignin free and has good color retention. |
![]() |
|||
![]() |
Avg. Brightness: | The percentage of reflectivity of a sheet of pulp or paper for blue light measured under specific standard conditions. Not necessarily related to color or whiteness. | |
![]() |
|||
![]() |
Azure: | ![]() |
The light blue color used in the nomenclature of "laid" and "wove" papers. |
![]() |
|
|
|