Substances added in small proportions to products to improve their performance, or to enhance their attractiveness or value. Additives are also used to prevent bacterial action, drying, staling, as well as to inhibit corrosion, oxidation, decomposition, etc.
All of the nonfibrous raw materials used in making paper. They may be added at any point during the papermaking process or after the paper has been manufactured.
Paper additives are used to color and size paper, control pH, improve physical properties, and increase wet strength.