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Kraft paper. Kraft paper or kraft[ 1] is paper or paperboard (cardboard) produced from chemical pulp produced in the kraft process . Sack kraft paper (or just sack paper) is a porous kraft paper with high elasticity and high tear resistance, designed for packaging products with high demands for strength and durability. [ 2]
The kraft process involves treatment of wood chips with a hot mixture of water, sodium hydroxide (NaOH), and sodium sulfide (Na 2 S), known as white liquor, that breaks the bonds that link lignin, hemicellulose, and cellulose. The technology entails several steps, both mechanical and chemical. It is the dominant method for producing paper.
Northern bleached softwood kraft. Northern bleached softwood kraft ( NBSK) is the paper industry's benchmark grade of pulp. Market NBSK is produced mainly in Canada and the Nordic countries. Some NBSK is also produced in north-western United States and in Russia. NBSK futures are traded on the Chicago Mercantile Exchange .
International Paper owns Tower I (at 6400 Poplar) and occupies the entire property and leases 50,000 square feet in Tower II (at 6410 Poplar) and all of Tower III (at 6420 Poplar). [25] In 2000, International Place Tower III was designed and rests amid the two existing towers and courtyard.
Bleaching of wood pulp is the chemical processing of wood pulp to lighten its color and whiten the pulp. The primary product of wood pulp is paper, for which whiteness (similar to, but distinct from brightness) is an important characteristic. [ 1] These processes and chemistry are also applicable to the bleaching of non-wood pulps, such as ...
The firm acquired the Roanoke Rapids kraft paper mill from International Paper in January 2007. In July 2008, it acquired the Charleston kraft paper mill from MeadWestvaco . On October 31, 2011, KapStone acquired U.S.Corrugated, Inc. [ 7 ] [ 8 ] [ 9 ] It was started in 2006 by Dennis Mehiel, and primarily produces corrugated industrial ...
Paper chemicals. Paper chemicals designate a group of chemicals that are used for paper manufacturing, or modify the properties of paper. These chemicals can be used to alter the paper in many ways, including changing its color and brightness, or by increasing its strength and resistance to water. [ 1] The chemicals can be defined on basis of ...
White liquor consists mainly of sodium hydroxide and sodium sulfide in water and is the active component in Kraft pulping. [1] White liquor also contains minor amounts of sodium carbonate, sodium sulfate, sodium thiosulfate, sodium chloride, calcium carbonate and other accumulated salts and non-process elements. These additional components are ...
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