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Essay / The Papermaking Process - 1057
The United States was the world's largest producer of paper until it was overtaken by China in 2009. The paper industry is dominated by countries of North America, Northern Europe and Eastern Asia. Paper was discovered by the Chinese 2000 years ago and has been used as a communication medium ever since. Paper is always present among people and paper actually documents the world. It plays a vital role as a passport to knowledge, a storage medium, a tool of persuasion and an entertaining art form. Paper is a durable resource and a permanent document. It is the universal medium on which to tell the story of the past on a daily basis. Papermaking today is a large, capital-intensive industry, characterized by high-speed machinery and complex control systems for manufacturing. Papermaking is produced through several processes. As Adanur (1997) explains, there is fiber sourcing, kraft pulp, mechanical pulp, bleaching, preparation for papermaking, the paper is formed (see Figure 1 in Appendix 1). First, the fiber is harvested from forest lands. In general, harvesting during dormancy yields the greatest amount of papermaking fiber. Fiber collection comes from three main sources of plant fibers used in papermaking: wood chips, sawdust and old corrugated containers. During this stage, the paper industry transforms the cellulose fiber into pulp. About 95% of the fibers are extracted from wood which is then reduced to fibers by mechanical means, the remainder comes from waste paper and a small amount of sawdust and old corrugated cardboard containers which must be processed to obtain individual fibers for papermaking (Minnes, 2013).The second stage of papermaking is kraft pulp. Chemical pulp production is predominant for the kr...... middle of paper ....... (1993). Essentials of pulp and papermaking. San Diego, CA: Academic Press. Bajpai, P. (2011). Environmentally friendly pulp and paper production. NJ, USA: John Wiley & Sons. Froass, P. M., Ragauskas, A. J., & Jiang, J. (2008). Chemical structure of residual lignin from kraft pulp. Journal of Wood Chemical and Technology, 16(4), 347-365. Gierer, J. (1980). Chemical aspects of kraft pulp. Journal of Wood Science and Technology, 14(4), 241-266. Minnes, G. (2013). Pulp and paper industry. Retrieved from http://www.thecanadianencyclopedia.ca/en/article/pulp-and-paper-industry/Paper Academy (nd). Overview of inventory preparation. Retrieved from http://www.paperacademy.net/827/paper-papermaking-stock-preparation/paper-stock-preparation/ Rahman, AA (2003). The complete papermaking process. Retrieved from http://individual.utoronto.ca/abdel_rahman/paper/fpmp.html