Reinforced microporous polyolefin sheets comprise one or more layers of a microporous polyolefin and a non-woven fabric at least partially embedded in the microporous polyolefin. The reinforced microporous polyolefin sheet is made in an extrusion lamination process by which a polyolefin sheet and non-woven fabric are laminated, followed by sequential cold and hot stretching steps to produce the micropores.

An air filter medium includes a fluororesin porous membrane and an air-permeable supporting member stacked on the fluororesin porous membrane. The fluororesin porous membrane has a pressure loss of 80 Pa or less when air is passed at a flow rate of 5.3 cm/s. The fluororesin porous membrane has a PF of 20 or more, the PF being determined from a formula PF={−log((100−collection efficiency (%))/100)}/(pressure loss (Pa)/1000) using the pressure loss and a collection efficiency determined using NaCl particles having a particle size of 0.1 μm. The fluororesin porous membrane has a thickness of 10 μm or more. A dust-holding capacity of polyalphaolefin particles having a number median diameter of 0.25 μm is 15.0 g/m.sup.2 or more when air containing the polyalphaolefin particles is continuously passed through the fluororesin porous membrane at a flow rate of 5.3 cm/s and pressure loss increases by 250 Pa.

An elastomeric bicomponent fiber, including at least one sheath and a core, with non-blocking properties and a garment-like feel is provided. The core includes an elastomer and a secondary amide, and the sheath includes a non-elastomeric polyethylene. Further, the sheath can be present as a small portion of the total elastomeric composition, and the secondary amide can be present as a small portion of the core, while forming a bicomponent fiber with non-blocking properties and a garment-like feel.

Nonwoven materials having low dust or lint content and methods of making the same are provided. Such nonwoven materials can include cellulose fibers pre-treated with a plasticizer or include the addition of plasticizer during the process of forming the material.

Nonwoven materials providing for low runoff and methods of making the same are provided. Such nonwoven materials can be absorbent and include a three-dimensional pattern on one or more surfaces thereof. Such materials can be airlaid and can include multiple layers, comprised of cellulose fibers and synthetic fibers. The nonwoven material can have a percent runoff of less than about 5%.

A flame retardant foam. The flame retardant foam includes a from 25 to 75 wt % polyvinyl alcohol foam; and a from 25 to 95 wt % fire retardant coated on the polyvinyl alcohol foam, wherein the fire retardant comprises ammonium polyphosphate or sodium metasilicate; wherein the thickness of the foam is from 2 mm to 1 cm.

A laminate has first and second spunbonded nonwoven layers at least one of which comprises or consists essentially of crimped continuous filaments that are bicomponent filaments having a first component based on polypropylene and a second component based on polypropylene. A specific density ρ (g/cm.sup.3) of the spunbonded nonwoven laminate depending on the surface density of the spunbonded nonwoven laminate lies below a density limit ρ.sub.G defined by the following equation:

ρ.sub.G=9 cm.sup.−1×surface density g/cm.sup.2+0.0393 g/cm.sup.3.

The present disclosure provides a laminated fabric structure comprising: a fabric layer; a nanofibrous membrane comprising a matrix of nanofibers; and a permeable adhesive layer sandwiched between the fabric layer and the nanofibrous membrane and comprising a filled portion and an unfilled portion. The permeable adhesive layer is able to combine the nanofibrous membrane and fabric layers together to provide significant protection on the nanofibrous membrane without sacrificing on the air permeability of the laminated fabric structure.

A packaging includes a composite material. The composite material includes a barrier layer and a backing layer. The backing layer includes a spunbonded nonwoven, arranged on at least one side of the barrier layer and bonded to the barrier layer by heat and pressure. The barrier layer includes a nonwoven containing 1 to 70 wt % melt-blown fibers and 30 to 99 wt % staple fibers, relative to a total weight of the nonwoven in each case.

Aspects herein are directed to a recyclable, asymmetrical-faced composite nonwoven textile suitable for use in apparel and other articles and methods of making the same. In example aspects, the asymmetrical-faced composite nonwoven textile includes a first face formed, at least in part from a first entangled web of fibers and an opposite second face formed, at least in part from a second entangled web of fibers. When incorporated into an article of apparel, the first face forms an outer-facing surface of the article of apparel, and the second face forms an inner-facing surface of the article of apparel. The first face includes features making it suitable to form the outer-facing surface such as resistance to abrasion, and the second face includes features making it suitable to form an inner-facing surface such as a soft hand.