This standard specifies the method for measuring the specular gloss of paper and cardboard with a 75° angle gloss meter. This method is mainly applicable to coated paper and cardboard, and can also be used for uncoated paper and cardboard or paper and cardboard printing samples with low printing gloss. The difference in sample color and diffuse reflectance has little influence on the determination of gloss. For black and white surfaces with the same gloss, the measurement result of the white surface is less than one gloss unit higher than that of the black surface.
GB/T 8941.3-1988 history
2013GB/T 8941-2013 Paper and board.Measurement of specular gloss
2007GB/T 8941-2007 Paper and board.Measurement of specular gloss (20° 45° 75°)
1988GB/T 8941.3-1988 Paper and board--Measurement of specular gloss(75°)
GB/T 8941.3-1988 Paper and board--Measurement of specular gloss(75°) was changed to GB/T 8941-2007 Paper and board.Measurement of specular gloss (20° 45° 75°).