The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 10, 1996
Filed:
Dec. 05, 1994
Jon A Howey, Mansfield, MA (US);
Timothy A Martin, Conyers, GA (US);
International Paper Company, Purchase, NY (US);
Abstract
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.