GB 8941.1-1988 "Paper and board Measurement of specular gloss (20°)"

The GB 8941.1-1988 Paper and Cardboard specular gloss measurement method 20 ° angle measurement method specifies the measurement method of paper and Cardboard specular gloss. This method evaluates the smoothness and light reflection characteristics of the paper surface by measuring Glossiness at 20 ° angle. This measurement method is essential for paper quality control and product performance evaluation, especially for paper products requiring high Glossiness.

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