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单词 sulphate process
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sulphate process
sulphate process n. Paper-making a method of manufacturing a tough brown paper involving the digestion of wood chips by sodium hydroxide and sodium sulphate to form the pulp.
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calendering1513
pulping1640
watermarking1851
couching1875
knotting1875
friction-glazing1878
shake1885
soda process1885
cook1894
sulphate process1894
reeling1906
fibrillation1929
conditioning1954
1894 G. Clapperton Pract. Paper-making iv. 32 The former [process]..employs a solution of sodium compounds containing a large percentage of sulphate of soda, and is known as the *sulphate process.
1963 R. R. A. Higham Handbk. Papermaking v. 98 There are three basic alkaline processes, which are: Soda process, Sulphate (Kraft) process, Pomilio process.
1974 Sci. Amer. Apr. 55/1 Most soda pulp mills changed over to the kraft process (which is also often called the sulfate process).
extracted from sulphatesulfaten.
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