Disclosed is a melt-blown fiber web with improved concentration force and elasticity, whereby a melt-blown fabric is cut and sealed at predetermined intervals using knives having arbitrary patterns so that concentration force and elasticity of the melt-blown fiber web can be improved without degrading the inherent function of the fiber web. Further disclosed are a method and apparatus for manufacturing the melt-blown fiber web. The melt-blown fiber web includes thermoplastic filaments, wherein cutting portions and sealing portions are arranged on top and bottom surfaces of the fiber web at predetermined intervals along a thickness of the fiber web so that a concentration force and elasticity of the fiber web are improved.

A three-dimensional substrate has a central longitudinal axis extending perpendicular to a central lateral axis. A line taken in a direction parallel to or perpendicular to the central lateral axis of the three-dimensional substrate has a non-apertured, first visually discernible zone in the substrate and a second visually discernible zone in the substrate. The first visually discernable zone has a pattern of three-dimensional features on a first surface or a second surface. At least some of the three-dimensional features define a microzone having a first region and a second region. The first region and the second region have a difference in value for an intensive property. The second visually discernable zone defines apertures. The apertures have an Effective Aperture Area in a range of about 0.3 mm.sup.2 to about 15 mm.sup.2.

A stretchable flame barrier panel including an interior stretch zone having elastomeric yarns extending across a fibrous base layer of textile fibers and optionally substantially stable lateral selvage zones outboard of the interior stretch zone. In a finished state, the interior stretch zone has substantial stretch and recovery in both the machine direction and the cross-machine direction.

A method of manufacturing an elastic film laminate includes stretching an elastic film in at least one direction at a first draw ratio, relaxing the elastic film, stretching the elastic film at least once more in the at least one direction at a second draw ratio less than the first draw ratio, and laminating the elastic film to at least one substrate web.

A hot melt adhesive using polypropylene impact copolymers that is particularly well suited for elastic attachment and stretch films in diaper structures. The hot melt adhesive composition is a blend of about 2.5% to about 30%, by weight, of a polypropylene impact copolymer; about 2.5% to about 30%, by weight, of an olefin based elastomer; about 10% to about 70%, by weight, of a tackifying resin having a softening point of at least about 80 C. and up to about 140 C.; about 0% to about 60%, by weight, of a plasticizer; and about 0.1% to about 5% of a stabilizer or antioxidant.

Disclosed is a laminate comprising at least one polyolefin elastic film layer and at least one substrate layer; the polyolefin elastic film having the following properties: (1) an average integrated enthalpy sum of no greater than 17 J/g, preferably between about 5-17 J/g, according to the Thermal Analysis Method defined herein; (2) an average integrated enthalpy ratio of from 0.6 to 300, preferably 0.8 to 300, still preferably 1.0 to 300, according to the Thermal Analysis Method defined herein; and (3) an unload stress at 75% strain of above 0.8 MPa according to the Hysteresis Test defined herein; and wherein the laminate has a normalized load force/normalized unload force ratio at 75% strain of 1 to 2.6 according to the Hysteresis Test defined herein.

A continuous filament spun-laid web includes a plurality of polymer fibers within the web, the web having a first thickness and the web being free of any thermal or mechanical bonding treatment. Activation of the web results in at least one of an increase from the first thickness prior to activation to a second thickness post activation in which the second thickness is at least about two times greater than the first thickness, a decrease in density of the web post activation in relation to a density of the web prior to activation, the web being configured to withstand an elastic elongation from about 10% to about 350% in at least one of a machine direction (MD) of the web and a cross-direction (CD) of the web, and the web having a tensile strength from about 50 gram-force/cm.sup.2 to about 5000 gram-force/cm.sup.2.

A three-dimensional, nonwoven substrate having at least a non-apertured zone and an apertured zone, and articles or absorbent articles including one of more of such substrates are provided.

A continuous filament spun-laid web includes a plurality of polymer fibers within the web, the web having a first thickness and the web being free of any thermal or mechanical bonding treatment. Activation of the web results in at least one of an increase from the first thickness prior to activation to a second thickness post activation in which the second thickness is at least about two times greater than the first thickness, a decrease in density of the web post activation in relation to a density of the web prior to activation, the web being configured to withstand an elastic elongation from about 10% to about 350% in at least one of a machine direction (MD) of the web and a cross-direction (CD) of the web, and the web having a tensile strength from about 50 gram-force/cm.sup.2 to about 5000 gram-force/cm.sup.2.

An elastic composite film provided with a sintered ePTFE film and an elastomeric resin layer, produced by continuously forming the elastomeric resin layer on at least one side of the sintered ePTFE film, continuously elongating the resulting multilayer film at less than the yield point of the expanded, sintered, porous film and at an elongation factor of 1.3 times or more in the biaxial directions, or in the uniaxial direction without contracting in the direction perpendicular to the direction of elongation, and relaxing the resulting elongated multilayer film, wherein when the composite film is elongated by 10% in the longitudinal and/or transverse direction, the tensile stress of the composite film is 2.5 N/15 mm or less, and/or the elongation percentage of the composite film in the longitudinal and/or transverse direction is 30% or more and the elongation recovery rate is 70% or more.