纸和板厚度,密度和比容的测定

[中文适用范围]： 本国际标准规定了两种测量纸和纸板厚度的方法： a) 单张纸或纸板的单张厚度的测量； b) 测量一包纸的松厚度。 本国际标准还规定了表观片密度和表观堆积密度的计算方法，以及根据厚度测定得出的表观比容体积和表观比容体积的计算方法。 本国际标准不适用于瓦楞纤维板。 此外，上述方法 b) 的松厚度测量不适用于板材 1)。 注意这两种方法通常会导致不同的结果。 这些方法不适用于薄纸和薄纸产品。 对于薄纸和薄纸产品，应使用 ISO 12625-3。 [外文原描述]： This International Standard specifies two methods for measuring the thickness of paper and board: a) the measurement of a single sheet of paper or board as a single sheet thickness; b) the measurement of a pack of sheets of paper as a bulking thickness. This International Standard also specifies calculation methods — for the apparent sheet density and for the apparent bulk density, and — for the apparent specific sheet volume and for the apparent specific bulk volume from the thickness determinations. This International Standard is not applicable to corrugated fibreboard. In addition, the measurement of bulking thickness, method b) above, is not suitable for board1). NOTE The two methods generally lead to different results. These methods are not applicable to tissue paper and tissue products. For tissue paper and tissue products, ISO 12625-3 should be used.