To insert sheets of a non-adhering material (called slip sheets) between printed materials as they come off press to prevent ink setoff and blocking.
In computing and multimedia, the term interleave means to integrate different types of data or files. For example, in many multimedia applications (especially those created using the CD-i system), text, graphics, audio, and video are intermingled to produce presentations that play synchronized sound and video. See Audio Video Interleaved, for example.