Lamb, Lynette. Papermaking science and technology, vol 6A.
The pulp for papermaking may be produced from virgin fibre by chemical or mechanical means or may be produced by the repulping of paper for recycling. Steps involved in the Pulp and Papermaking Procedure: Preparation of raw Material Wood that has been received at a pulp mill can be in different forms.
Liliaceae Press, These chips are ground by passing them through rapidly rotating in both processes. It may be received as bolts short logs of round-wood with the bark still attached, as chips about the size of a half-dollar that may have been produced from sawmill from debarked round wood elsewhere.
The impressions in paper caused by the wires in the screen that run sideways are called "laid lines" and the impressions made, usually from top to bottom, by the wires holding the sideways wires together are called "chain lines". In the second stage after refining, the pulp is screened, cleaned, and most of the process water is removed in preparation for paper making.
Cartonboard is sold to folding carton and other producers of industrial products, as well as for other uses such as cards and book covers. Paper Background Formed from wood pulp or plant fiber, paper is chiefly used for written communication.
The Manufacturing Process Making pulp 1 Several processes are commonly used to convert logs to wood pulp. Papermaking Procedure Bleached or unbleached pulp may be further refined to cut the fibers and roughen the surface of the fibers to enhance formation and bonding of the fibers as they enter the paper machine.
Some plants other than trees are suitable for paper-making. This fiber is soaked, cooked, rinsed and traditionally hand-beaten to form the paper pulp.