An air entanglement system having a housing, a first rotatable surface disposed with the housing, and a second rotatable surface disposed with the housing proximate the first rotatable surface is described herein. The first rotatable surface may comprise a first plurality of air jets configured to air entangle a preform in situ. The second rotatable surface may be disposed with the housing proximate the first rotatable surface. The second rotatable surface may comprise a second plurality of air jets configured to air entangle the preform in situ. The air entanglement system may be configured to achieve negative pressure in response to being under suction.

An air entanglement system having a housing, a first rotatable surface disposed with the housing, and a second rotatable surface disposed with the housing proximate the first rotatable surface is described herein. The first rotatable surface may comprise a first plurality of air jets configured to air entangle a preform in situ. The second rotatable surface may be disposed with the housing proximate the first rotatable surface. The second rotatable surface may comprise a second plurality of air jets configured to air entangle the preform in situ. The air entanglement system may be configured to achieve negative pressure in response to being under suction.

A top sheet for an absorbent personal care product is a water-permeable composite web produced by hydro-entangling a web of chemical free natural and/or cellulosic staple fibers and/or blend of natural and cellulosic staple fibers and a web of man-made continuous filament yards such that a first side of the composite web exposes the chemical free natural and/or cellulosic staple fibers and/or blend of natural and cellulosic staple fibers and an opposite second side of the composite web has the man-made continuous filament yarns. The web of chemical free natural and/or cellulosic staple fibers and/or blend of natural and cellulosic staple fibers is hydrophilic and the web of man-made continuous filament synthetic yarns is hydrophobic. The composite web weights between about 20 gsm and about 40 gsm.

A top sheet for an absorbent personal care product is a water-permeable composite web produced by hydro-entangling a web of chemical free natural and/or cellulosic staple fibers and/or blend of natural and cellulosic staple fibers and a web of man-made continuous filament yards such that a first side of the composite web exposes the chemical free natural and/or cellulosic staple fibers and/or blend of natural and cellulosic staple fibers and an opposite second side of the composite web has the man-made continuous filament yarns. The web of chemical free natural and/or cellulosic staple fibers and/or blend of natural and cellulosic staple fibers is hydrophilic and the web of man-made continuous filament synthetic yarns is hydrophobic. The composite web weights between about 20 gsm and about 40 gsm.

The invention relates to a textile fabric made of a fleece comprising a super absorbing activation, to a method for producing the textile fabric, to a covering surrounding the textile fabric, to a cooling system using the covering and to a covering designed as a cooling item.

The invention relates to a textile fabric made of a fleece comprising a super absorbing activation, to a method for producing the textile fabric, to a covering surrounding the textile fabric, to a cooling system using the covering and to a covering designed as a cooling item.

Described is a composite made from a woven fabric, a non-woven fabric, or a knitted face fabric and a non-woven fabric. The woven fabric, the non-woven fabric, or the knitted face fabric is needle punched such that fibers protrude into the non-woven fabric. The woven fabric, the non-woven fabric, or the knitted face fabric has a first polymer having a first melting point and a second polymer having a second melting point being higher than the first melting point. The nonwoven backing material comprises a third polymer having a third melting point and a fourth polymer having a fourth melting point being higher than the third melting point. The woven fabric, the non-woven fabric, or the knitted face fabric is further bonded to the nonwoven backing material applying heat to at least partially melt or soften the first polymer and the third polymer such that they bond together.

Described is a composite made from a woven fabric, a non-woven fabric, or a knitted face fabric and a non-woven fabric. The woven fabric, the non-woven fabric, or the knitted face fabric is needle punched such that fibers protrude into the non-woven fabric. The woven fabric, the non-woven fabric, or the knitted face fabric has a first polymer having a first melting point and a second polymer having a second melting point being higher than the first melting point. The nonwoven backing material comprises a third polymer having a third melting point and a fourth polymer having a fourth melting point being higher than the third melting point. The woven fabric, the non-woven fabric, or the knitted face fabric is further bonded to the nonwoven backing material applying heat to at least partially melt or soften the first polymer and the third polymer such that they bond together.

Filter media, such as electret-containing filtration media for filtering gas streams (e.g., air), are described herein. In some embodiments, the filter media may be designed to have desirable properties such as stable filtration efficiency over the lifetime of the filter media, increased normalized gamma, relatively low pressure drop (i.e. resistance), and/or relatively low basis weight. In certain embodiments, the filter media may be a composite of two or more types of fiber layers where each layer may be designed to enhance its function without substantially negatively impacting the performance of another layer of the media. For example, one layer of the media may be designed to have a relatively low basis weight and/or a relatively high air permeability, and another layer of the media may be designed to have stable filtration efficiency and/or a relatively high efficiency throughout the filter media's lifetime. The filter media described herein may be particularly well-suited for applications that involve filtering gas streams (e.g., face masks, cabin air filtration, vacuum filtration, room filtration, furnace filtration, respirator equipment, residential or industrial HVAC filtration, high-efficiency particulate arrestance (HEPA) filters, ultra-low particular air (ULPA) filters, medical equipment), though the media may also be used in other applications.

Methods for forming a touch fastening material are described as including: providing a lengthwise-incoherent layer of staple fibers supported directly on a bed of bristle tips of a brush; needling the layer of staple fibers by cycling needles through the layer of staple fibers and into the brush; then, while the needled layer of staple fibers remains supported on the brush, fusing portions of the staple fibers by at least partially melting resin of the fibers disposed outside the brush; and then pulling the layer of fibers from the brush as a lengthwise-coherent touch fastening material having exposed fastening loops pulled from between the brush bristles.