Multi-layered diskette liner

摘要

This invention generally relates to a nonwoven fabric for use as a liner for the magnetic recording medium in a computer diskette. More particularly, it is concerned with a thermally bonded, multi-layer, composite nonwoven which includes a distinct top magnetic media contacting layer having 25-100% rayon fibers, and middle and bottom layers being substantially free of rayon fibers. The middle layer is composed of a plurality of webs each comprising a blend of matrix thermoplastic fibers and binder fibers. The binder fibers in the middle layer are isolated from the two exterior layers. The bottom cartridge contacting layer comprises 100% matrix thermoplastic fibers. The cartridge contacting layer prevents the lower melt thermoplastic fibers in the middle layers from sticking to calendar rolls during thermal bonding. This structure provides a liner with superior wiping and hygroscopic dimensional stability and low debris characteristics.