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    • 9. 发明公开
    • RAW PAPER AND PRODUCTION METHOD AND APPLICATION THEREOF
    • ROHPAPIER SOWIE VERFAHREN ZU SEINER HERSTELLUNG UND VERWENDUNG
    • EP2374930A1
    • 2011-10-12
    • EP09831472.7
    • 2009-12-09
    • Shandong Fuyin Paper & Environmental Protection Technology Co., Ltd
    • LI, HongfaSONG, MingxinWANG, JianminBI, YanjinXU, JinxiangHE, Zhongcheng
    • D21H11/12D21H27/10D21C3/00
    • D21H11/12D21C3/02D21C3/14D21C3/222D21C5/00D21C9/02D21C9/147D21H27/00D21H27/10
    • A raw paper prepared by a mixed pulp including straw pulp, which can be used to prepare textbooks, writing papers and office paper with good performance, and the producing method of said raw paper are provided. The weight proportion of the straw pulp in the mixed stock is from 10% to 100%, and the straw pulp has a hardness of KMnO 4 value 10-17, an average fiber length of 0.1-2.5 mm, a tensile index of 23-57 Nm/g, a tearing index of 3.0-6.0 mN·m2/g, a folding endurance index of 2-6 kPa·m2/g and a whiteness of 28-50%. Either, the L value of the hue of said raw paper is 65-95, a value is 0-5, and b value is 0-40. The KMnO 4 value of hardness of the pulp after oxygen delignification is 10-14. The method includes: adding grass-series raw material into a digester, then adding cooking liquor, heating the cooking liquor to 100-200°C, pressurizing to 0.3-0.9MPa, cooking for 150-250 min, extruding the pulp, washing and obtaining the straw pulp. The amount of the ammonium sulfite of the cooking reagent is 5-20% of the absolute dry material, and the amount of the sodium hydroxide is 0-15% of the absolute dry material, the liquor ratio is 1:2-15.
    • 提供了可以用于制备具有良好性能的教科书,书写纸和办公用纸的混合纸浆的原纸,包括草浆,以及所述原纸的制造方法。 混合浆中秸秆浆的重量比为10%〜100%,草浆硬度KMnO 4为10-17,平均纤维长度为0.1〜2.5mm,拉伸指数为23〜 57Nm / g,撕裂指数为3.0-6.0mN·m 2 / g,折痕耐力指数为2-6kPa·m 2 / g,白度为28〜50%。 或者,所述原纸的色调的L值为65-95,值为0-5,b值为0-40。 氧脱木质后纸浆的KMnO 4值为10-14。 该方法包括:将草料原料加入到蒸煮器中,然后加入蒸煮液,将蒸煮液加热至100-200℃,加压至0.3-0.9MPa,蒸煮150-250分钟,挤出纸浆,洗涤和 获得草浆。 烹饪试剂的亚硫酸铵的量为绝对干物质的5-20%,氢氧化钠的量为绝对干物质的0-15%,浴比为1:2-15。