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1. 发明申请

WO1995034711A1 A LIGHT DRAINABILITY, BULKY CHEMIMECHANICAL PULP THAT HAS A LOW SHIVE CONTENT AND A LOW FINE-MATERIAL CONTENT 审中-公开
标题翻译：轻度可渗透性，具有低成分含量和低精细含量的大容量化学粉末
公开(公告)号：WO1995034711A1
公开(公告)日：1995-12-21
申请号：PCT/SE1995000670
申请日：1995-06-07
申请人： MÖLNLYCKE AB , HÄGGLUND, Tjell-Åke , EKEBRO, Ingela , HÖGLUND, Hans , BÄCK, Roland
发明人： MÖLNLYCKE AB
IPC分类号： D21B01/02
CPC分类号： D21B1/12 , D21B1/021
摘要： A chemimechanical pulp for use in the manufacture of paper or paperboard products where a high drainability, bulky pulp is desired. The pulp has a long fiber content of between 60 and 75 %, a fine-material content of at most 14 %, a shive content of beneath 0.5 %, is refined to a freeness of 600 ml CSF at the lowest, and has a tensile index of at least 10 kNm/kg. A method for producing such a pulp comprising: a) impregnating chips with a lignin softening chemical; b) preheating the chips; c) refining the chips to papermaking pulp; wherein the chips are impregnated and heated over a total time period of at most 4 minutes; a) using a hot impregnating liquid having a temperature of at least 130 DEG C; b) preheating the chips at a temperature above the lignin softening temperature; c) refining the pulp in one or more stages, of which the first or sole stage is carried out solely at essentially the same pressure and the same temperature as the preheating process; and refining the pulp at a total energy input which is at least 50 % and at most 90 % of the energy input required to achieve the same shive content when preheating at 135 DEG C and using the same machine equipment.
摘要翻译：用于制造纸或纸板产品的化学机械纸浆，其中需要高排水性，大量纸浆。纸浆具有60至75％之间的长纤维含量，至少14％的细料含量至少在0.5％以下，筛分最低的600ml CSF的游离度，并具有拉伸强度指数至少为10 kNm / kg。一种生产这种纸浆的方法，包括：a）用木质素软化剂浸渍碎片; b）预热芯片; c）将碎片精制成造纸纸浆; 其中将芯片浸渍并加热至多4分钟的总时间; a）使用温度至少为130℃的热浸渍液; b）在高于木质素软化温度的温度下预热芯片; c）在一个或多个阶段中精炼纸浆，其中第一阶段或唯一阶段仅在与预热过程基本上相同的压力和相同的温度下进行; 并在总能量输入下精炼纸浆，该总能量输入为在135℃下预热并使用相同的机器设备时达到相同叶片含量所需的能量输入的至少50％和至多90％。

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