Cross-direction elastic film laminates, and methods of making same
OwnerMichael Mormaninventor
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Abstract
A film laminate having cross-directional elasticity includes an elastomeric film laminated to at least one neckable facing layer such that fibers of the facing layer are attached to the elastomeric film. The laminate can be made by applying an elastic polymer, such as a liquid elastic polymer, onto a neckable nonwoven web to form a laminate; longitudinally slitting the laminate into a plurality of laminate strips; and necking the plurality of laminate strips. The method may be timed such that a setting of elastic memory in the elastic polymer occurs after the plurality of laminate strips are necked.
Claims37
A film laminate comprising:
- an elastomeric film laminated to at least one neckable facing layer such that fibers of the facing layer are attached to the elastomeric film, wherein the laminate is necked and possesses cross-directional elasticity.
A method of making a film laminate having cross-directional elasticity, comprising:
- applying a liquid elastic polymer onto a neckable nonwoven web to form a laminate;
- longitudinally slitting the laminate into a plurality of laminate strips;
- and
- longitudinally stretching the plurality of laminate strips to cause necking of the laminate strips.
A method of making a film laminate having cross-directional elasticity, comprising:
- applying a pre-elastic polymer onto a neckable nonwoven web to form a laminate;
- longitudinally slitting the laminate into a plurality of laminate strips;
- longitudinally stretching the plurality of laminate strips to cause necking of the laminate strips;
- and
- timing a setting of elastic memory in the pre-elastic polymer to occur after the plurality of laminate strips are necked.
A wound roll of multiple strips of a necked-bonded laminate, each of the strips having substantially identical cross-directional basis weight and/or extendability properties.
Dependencies are inferred from the claim text.