The wear resistance of the ink layer of the printed matter of the constant temperature and humidity tester is calculated as follows: the wear resistance of the ink layer = D / D0 × 100%; where D0: the average density value before friction; D: the average density value after friction. Zhongbao Testing Equipment Co., Ltd.
The national standard (GB7706-87) stipulates that the abrasion resistance of the ink layer of the decorative printed matter of the constant temperature and humidity tester is ≥70%. This standard is applicable to paper decoration prints printed by flexographic printing process, not to plastic film prints. This index can play an effective role in guiding the printing house to control the ink layer. When the wear resistance is low, the production process can be adjusted as early as possible to reduce the number of unqualified products; at the same time, the constant temperature and humidity tester can be based on this parameter. Product quality classification
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