GB/T 8941-2007 in English

《GB/T 8941-2007纸和纸板镜面光泽度的测定（20°、45°、75°）》由TC141（全国造纸工业标准化技术委员会）归口，主管部门为中国轻工业联合会。
本标准规定了以20°、45°、75°光泽度仪测定纸和纸板镜面光泽度的方法。20°光泽度测定法主要适用于铸涂纸、蜡光纸等高光泽度的纸和纸板,也适用于高印刷光泽度的纸和纸板印样。不适用于光泽度较低的涂布或未涂布的纸和纸板。
45°光泽度测定法主要适用于测定铝箔纸、真空镀铝纸等金属复合的纸和纸板。
75°光泽度测定法主要适用于涂布纸及纸板,也可用于未涂布纸及纸板或低印刷光泽度的纸及纸板印样,试样的颜色和漫反射比的差别对测定光泽度的影响不大。

Scope

This standard specifies the method for measuring the specular gloss of paper and cardboard with 20°, 45°, and 75° gloss meters. The 20° gloss measurement method is mainly suitable for high-gloss paper and paperboard such as cast-coated paper and glossy paper, and is also suitable for printing samples of high-gloss printing paper and paperboard. Not suitable for lower gloss coated or uncoated paper and board. The 45° gloss measurement method is mainly suitable for the determination of metal composite paper and cardboard such as aluminum foil paper and vacuum aluminized paper. The 75° gloss measurement method is mainly suitable for coated paper and cardboard, and can also be used for uncoated paper and cardboard or paper and cardboard printing samples with low printing gloss. has little effect.