Download or read book GB T 40167 2021 Translated English of Chinese Standard GBT40167 2021 written by https://www.chinesestandard.net and published by www.ChineseStandard.net. This book was released on 2021-09-03 with total page 11 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Standard specifies the accelerated ageing method of printing paper and writing paper at 100 degree-Celcius, and, by evaluating the impact of ageing treatment on the two physical properties of the paper, namely folding number and tearing resistance, predicts the effect of long-term natural ageing process on paper stability. This Standard applies to all kinds of printing paper and writing paper, including coated paper and filled paper.