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Papermaking
Posted on Mei 13, 2009 - by admin, in category News
Papermaking is the process of making paper, a substance which is used ubiquitously today for writing and packaging.
In papermaking a dilute suspension of fibers in water is drained through a screen, so that a mat of randomly interwoven fibers is laid down. Water is removed from this mat of fibers by pressing and drying to make paper. Most paper is made from wood pulp, but other fiber sources such as cotton and textiles may be used.
From Wikipedia, the free encyclopedia
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History of Paper Pulp
Posted on Jul 25, 2009 - by adminUsing wood to make paper is a fairly recent innovation. In the 1800s, fiber crops such as linen fibres were the primary material source, and paper was a relatively expensive commodity. The use of wood to make pulp for paper began with the development of mechanical pulping in Germany by F.G. Keller in the […]
Kraft process
Posted on Jul 18, 2009 - by adminThe kraft process (also known as kraft pulping or sulfate process) describes a technology for conversion of wood into wood pulp consisting of almost pure cellulose fibers. The process entails treatment of wood chips with a mixture of sodium hydroxide and sodium sulfide that break the bonds that link lignin to the cellulose. The […]