Paper is a natural product made from three basic resources.
A three-step process
The paper making process has undergone very little change for nearly 3,000 years. It involves macerating cellulose fi bres in water until they are completely separate, gradually and carefully eliminating the water and fi nally forming the intertwined fi bres into a homogeneous sheet.
A headbox uniformly dispenses the pulp from fibres previously suspended in water over a screen so that the water can gradually drain and the fibres can adhere to each other to form a web, or sheet.
This step continues the water removal process while strengthening the bonds between fibres, thereby giving the sheet much of its future strength.
The sheet passes through a set of cylindrical steam-heated rolls so that any remaining water will evaporate.
Multiple end products
Paper can be treated in a variety of ways to improve its fi nish, quality and performance. It can be coloured, coated with one or more additional layers to achieve a specifi c kind of surface (e.g. photo paper), or calendered to obtain a smoother fi nish (as with coated paper).