ISO 5269-3:2008 纸浆 物理试验用实验室纸张的制备 第3部分：采用封闭用水系统的常规和快速K?then法纸页成形器
标准编号：ISO 5269-3:2008
中文名称：纸浆 物理试验用实验室纸张的制备 第3部分：采用封闭用水系统的常规和快速K?then法纸页成形器
英文名称：Pulps — Preparation of laboratory sheets for physical testing — Part 3: Conventional and Rapid-Köthen sheet formers using a closed water system
发布日期：2008-05
标准范围
ISO 5269-3:2008规定了两种制备保持平衡的闭式水系统的程序，用于从细粒含量高的纸浆制备实验室用薄片。一种程序适用于使用常规板材成型机制备实验室板材，另一种程序适用于使用Rapid-K'then板材成型机制备实验室板材。在达到保留平衡之前制备的片材将被丢弃。ISO 5269-3:2008特别适用于机械和化学机械浆，以及由回收纤维制备的纸浆，即。e、 当使用ISO 5269-1或ISO 5269-2中所述的开放水系统时，细粒含量高且细粒保留率差的纸浆。ISO 5269-3:2008不适用于某些超长纤维纸浆，如未经烘干的棉、亚麻和类似材料制成的纸浆。在达到保留平衡后，按照ISO 5269-1（常规薄片成型机）或ISO 5269-2（快速成型机）中所述的程序，制备用于测试物理性能的实验室薄片-K'then sheet former），以相关者为准。ISO 5269-3:2008通常不适用于使用ISO 5269-1或ISO 5269-2的化学纸浆制备实验室纸。ISO 5269-3:2008不适用于测量ISO亮度的实验室纸张的制备。这些表可以按照ISO 3688的要求制备。
ISO 5269-3:2008 specifies two procedures for preparing a closed water system which is in retention equilibrium, to be used for the preparation of laboratory sheets from pulps with a high fines content. One procedure is applicable to the preparation of laboratory sheets using the conventional sheet former and the other using the Rapid-K'then sheet former. The sheets prepared prior to attaining retention equilibrium are discarded.ISO 5269-3:2008 is especially applicable to mechanical and chemimechanical pulps, as well as to pulps prepared from recycled fibres, i.e. pulps with a high fines content for which retention of fines is poor when using the open water system as described in ISO 5269-1 or ISO 5269-2. ISO 5269-3:2008 is not applicable to some very long-fibred pulps, such as those from unshortened cotton, flax and similar materials.After retention equilibrium is attained, the preparation of laboratory sheets for testing the physical properties follows the procedures described in ISO 5269-1 (conventional sheet former) or ISO 5269-2 (Rapid-K'then sheet former), whichever is relevant.ISO 5269-3:2008 is generally not applicable for the preparation of laboratory sheets from chemical pulps for which ISO 5269-1 or ISO 5269-2 are used.ISO 5269-3:2008 is not applicable for the preparation of laboratory sheets for measuring ISO brightness. These sheets can be prepared in accordance with ISO 3688.
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