Dressing
AssigneeThe Kendall Company
InventorPeter J. Schoots
Life of this patent
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Abstract
A dressing comprising a textile-like nonwoven fabric characterized in that the fibers comprise a blend of fibers including a percentage (preferably from about 15 to about 60 percent) of thermoplastic fibers, and the fabric is compacted (preferably micro-creped at an overfeed not less than 10 percent and typically in the range of about 20 to about 30 percent and at a drum temperature of greater than about 250 degrees F.) subsequent to hydro-entangling the fibers. prior to compacting, the fabric typically has a weight in the range of about 20 to 60 grams per square yard. After compacting, the fabric has an absorptive capacity and a liquid transfer both of which are greater than the absorptive capacity and liquid transfer of a hydro-entangled fabric of the same weight and fiber blend which has not been compacted.
Claims18
A dressing comprising at least one layer of a textile-like nonwoven fabric of hydro-entangled fibers, said fabric layer being characterized in that:
- said fibers comprise a blend of fibers including a percentage of thermoplastic fibers;
- and,
- said fabric is compacted subsequent to hydro-entangling said fibers to rearrange said fabric layer into a series of wave-like undulations,
- whereby said fabric subsequent to and solely as a consequence of said compacting has an absorptive capacity and a liquid transfer both of which are greater than the absorptive capacity and liquid transfer of a hydro-entangled fabric layer of the same fabric weight and fiber blend that has not been compacted.
A dressing comprising at least one layer of a textile-like nonwoven fabric of essentially unbonded, hydro-entangled fibers, said fabric layer being characterized in that:
- said fibers comprise a blend of fibers including not less than about 15 percent thermoplastic fibers,
- said fabric layer is micro-creped at an overfeed of not less than about 10 percent and at a microcreper drum temperature of not less than about 250 degrees F. subsequent to hydro-entangling said fibers to form said fabric, and
- said fabric prior to said micro-creping has a weight in the range of about 20 to about 60 grams per square yard,
- whereby said fabric layer subsequent to and solely as a consequence of said micro-creping has an absorptive capacity and a liquid transfer both of which are greater than the absorptive capacity and liquid transfer of a hydro-entangled fabric layer of the same weight and fiber blend that has not been micro-creped.
Dependencies are inferred from the claim text.