Kraft paper accelerated aging

For each paper, both Foldur Kraft and newsprint, there were ten sample sets and one unwashed set, which was used as a control. The air dried samples were subjected to accelerated aging in humid (90°C/50% relative humidity) and dry (100°C) circulating air ovens for one, two, three, and five weeks. At regular seven-day intervals one sheet from each sample set was removed and tested. 

Table I. Accelerated Aging of Washed Kraft Paper...

In this experiment, four types of papers were subjected to accelerated aging. The papers, Foldur Kraft, newsprint, JCPA-60 (Government Printing Office property No. 16929), and Allied Superior were placed in a... 

Some Foldur kraft samples were preaged before borohydride treatment and further aging. Paper samples were subjected to accelerated aging at 100 °C in a dry oven for 14 h or at 90 °C and 50% rh for 7 h. 

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