Wiktionary
interfold
vb. (context transitive English) To fold one into another; fold together.
Usage examples of "interfold".
A cabbagy cluster of interfolded currency fell out soundlessly, and a sprinkling of coins, these last with a tinkling sound and some rolling about.
The windows were too tall, and the burgundy damask draperies smothering them, interfolded at full length before them so that not a trace of an opening showed, only emphasized their formal height and width.