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US 5,311,389 AGranted
Hydroentangled fabric diskette liner
AssigneeInternational Paper Company
InventorJon A. Howey
Life of this patent
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AssigneeInternational Paper Company
InventorJon A. Howey
Estimating the term…
A nonwoven liner for a diskette cartridge is made of hydroentangled fibers and impregnated with a small amount of binder which is uniformly distributed throughout the fabric. The binder comprises no more than 5% by weight and preferably between 1.5-3.0% by weight of the fabric. The low concentration of binder ensures that the liner surface does not become totally coated with plastic film that reduces cleaning ability, while also providing improvements in tensile strength and debris reduction. The binder solution preferably has a high surface tension (low surfactant level), so that the binder becomes concentrated at the junction points of the fibers throughout the fabric. The low level of surfactant ensures a low risk of chemical attack of the disk media surface. The hydroentangled fabric cleans the disk media more efficiently, has less fiber debris, contains less environmental contaminants, is substantially loftier, and is cut with cleaner edges than standard thermally bonded diskette liners.
A diskette liner, for use in cleaning the surface of a disk recording medium, comprising a nonwoven fabric made of fibers which are hydroentangled together and impregnated with a small amount of binder that is applied as a solution to the fabric and has its fluid content removed by drying such that the binder is collected at junction points of the fibers and is substantially uniformly distributed throughout the fibers of the fabric in at least a minimum amount, and no more than 5% by weight of the fabric, which is sufficient to achieve said uniform distribution of the binder at the junction points of the fibers.
A method of fabricating a diskette liner material, for use in cleaning the surface of a disk recording medium, comprising the steps of:
An improved diskette cartridge of the type having opposing outer wall members, a rotatable disk recording medium having at lest one surface for recording information thereon retained between said outer wall members, and at least one liner placed between one of said wall members in contact with said recording medium for cleaning thereof, wherein the improvement comprises said liner being formed of a nonwoven fabric made of fibers which are hydroentangled together and impregnated with a small amount of binder that is applied as a solution to the fabric and has its fluid content removed by drying such that the binder is collected at junction points of the fibers and is substantially uniformly distributed throughout the fibers of the fabric in at least a minimum amount, and no more than 5% by weight of the fabric, which is sufficient to achieve said uniform distribution of the binder at the junction points of the fibers.
Dependencies are inferred from the claim text.