Manufacturing Paper Sheets from Olive Wood by Soda, Sulphite and Kraft Pulping
نویسنده
چکیده
Paper sheets from Iranian olive tree produced by soda, sulphite and kraft pulping.Then the influence of pulp beating on properties of paper sheets was studied. Kraft pulp exhibited the highest holocellulose/yield -cellulose/yield ratios and the sulphite pulp the soda pulp the highest lignin/yield ratio. Paper sheets from kraft with the breaking length 5851 m, stretch 4.61%, Burst index 4.48 KN/g and tear index 2.03 mNm /g, exhibited the 2 highest resistance. Sulphite pulp showed the highest brightness (41%). The brightness difference between Kraft and soda pulp was not significant. Soda pulp required more intensive beating than did kraft or sulphite pulps; in fact, the PFI beater had be operated at about 50% higher number of beating revolutions to obtain soda pulp with 80-85° SR.
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