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US 6,225,243 B1Granted
Elastic nonwoven fabric prepared from bi-component filaments
AssigneeBBA Nonwovens Simpsonville, Inc.
InventorJared A. Austin
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AssigneeBBA Nonwovens Simpsonville, Inc.
InventorJared A. Austin
Estimating the term…
A bonded web of multi-component strands that include a first polymeric component and a second polymeric component is capable of overcoming a number of problems associated with nonwoven webs including both stickiness and blocking. The first polymeric component and second polymeric components are arranged in substantially distinct zones extending longitudinally along at least a portion of a length of the strands which make up the web with the second component containing a zone constituting at least a portion of the peripheral surface of the strand. Moreover, the first polymeric component has an elasticity which is greater than that of the second polymer component. A process producing elastomeric spunbonded nonwoven fabrics which utilizes air in attenuating and/or drawing of strands is also provided.
A bonded nonwoven web comprising a plurality of multi-component strands, each strand comprising a first polymeric component and a second polymeric component arranged in a core and sheath arrangement with the core comprising the first component and the sheath comprising the second component, wherein the first component comprises at least one elastomer and has an elasticity that is greater than the second component, and wherein the second component comprises at least 50 percent by weight of a linear low density polyethylene having a density greater than 0.90 g/cc.
A bonded nonwoven web comprising a plurality of bicomponent strands, and a plurality of bonds bonding the strands together, each strand comprising a first polymeric component and a second polymeric component arranged in a core and sheath arrangement with the core comprising the first component and the sheath comprising the second component, wherein the first component comprises at least one elastomer and has an elasticity that is greater than the second component, and wherein the second component comprises at least 50 percent by weight of a linear low density polyethylene having a density greater than 0.90 g/cc.
A spunbonded web comprising a plurality of multi-component filaments, and a plurality of spaced apart point bonds bonding the filaments to one another, each said multi-component filament comprising a first polymeric component and a second polymeric component arranged in a core and sheath arrangement with the core comprising the first component and the sheath comprising the second component, wherein the first component comprises at least one elastomer and has an elasticity that is greater than the second component, and wherein the second component comprises a blend of polypropylene and at least 50 percent by weight of a linear low density polyethylene having a density greater than 0.90 g/cc.
Dependencies are inferred from the claim text.