Abstract: A fibrous material or composite including a plurality of layers joined to one another, for example, by needlepunching, is disclosed. The fibrous composite generally has an asymmetrical stretch profile, such that the fibrous composite is more extensible in the cross-machine direction than in the machine direction. The fibrous composite may find particular use in forming a cure-in-place pipe liner.

Abstract: According to an aspect, the present embodiments may be associated with a heat shield including a retention feature or member. In an embodiment, the retention member is integrated with the heat shield body and includes a trilobal shaped aperture formed therein. The trilobal shaped aperture is adapted and configured to receive and temporarily retain a fastener. Thus, the heat shield is capable of at least being temporarily held in place prior to the use of permanent installation techniques.

Abstract: According to an aspect, the present embodiments may be associated with a heat shield including a sealing member. In an embodiment, the sealing member is positioned along at least a portion of a partially hemmed edge and retained thereby. Thus, the heat shield is capable of providing insulative and/or sealing properties when used, specifically thermal, vibrational and/or acoustical shielding, as well as limiting fluid flow across the edge of the heat shield.

Abstract: A fibrous material or composite including a plurality of layers joined to one another, for example, by needlepunching, is disclosed. The fibrous composite generally has an asymmetrical stretch profile, such that the fibrous composite is more extensible in the cross-machine direction than in the machine direction. The fibrous composite may find particular use in forming a cure-in-place pipe liner.

Abstract: According to some embodiments, a material and a method of providing thermal and acoustical insulation with an insulating shield that is moldable and self-supporting insulating shield, is presented. The shield includes a nonwoven material and an oleophobic coating applied to the outer surface of the nonwoven material. The oleophobic coating includes a percent add-on (% AO) of less than approximately 3% AO and a penetration into the surface of the nonwoven material of less than approximately 10%.

Abstract: According to an aspect, the present embodiments may be associated with a heat shield including a retention feature or member. In an embodiment, the retention member is integrated with the heat shield body and includes a trilobal shaped aperture formed therein. The trilobal shaped aperture is adapted and configured to receive and temporarily retain a fastener. Thus, the heat shield is capable of at least being temporarily held in place prior to the use of permanent installation techniques.

Abstract: A cross-lapped multilayered batt, and a method of making the same is presented. The batt includes one or more layers of a carded web of staple fibers, and one or more continuous filament fiber layers. At least some of the staple fibers and, in some instances, some of the continuous filament fibers are mechanically entangled through a thickness of the batt. The method includes folding both the carded web and the continuous filament fiber layers together, and subjecting the folded layers to a needle-punching process to impart structural stability and enhance the Z-directional strength of the batt.

Abstract: A molded and shaped acoustical insulating vehicle panel having a dry-laid needled fibrous composite composed of a first portion of about 50 to 80 percent meltable binder fibers and about 20 to 50 percent stable fibers and having a second portion of about 20 to 50 percent meltable binder fibers and 50 to 80 percent of staple fibers. The meltable binder fibers are in a molded and resolidified state such that the resolidified binder fibers of the first portion form a substantially continuous, semi-impervious, densified skin integrally associated with and bonded to a surface of the first portion. The molded composite is in such a heat and pressure molded state that the composite has over a predominance of its area a density of from about 12 to 22 lbs./cubic foot (192 to 352 kg/cubic meter) and the panel is sufficiently rigid as to be self-supporting.

Abstract: A fibrous structure suitable for use as a battery separator is described. The fibrous structure may include a plurality of plies or layers. Each ply or layer serves to provide a barrier function and an absorbent function, such that the multilayer fibrous structure is suitable for use as a battery separator, for example, an alkaline battery separator.

Abstract: An acoustical insulator having a composite air flow resistance is presented. The insulator may be for being positioned within a void space, and may include first and second sheets. The sheets may be joined to each other in an overlapping configuration along their respective peripheral edges, thereby defining an overlapped area between them. The sheets may include contours, such that the acoustical insulator substantially conforms to a peripheral boundary of the void space. The overlapped area may define a substantially closed air gap between the adjoined first and second sheets, the air gap having variable gap lengths along the respective sheet areas. The density of at least one of the sheets may vary with the variable gap length, so that the sheets and air gap collectively provide a composite air flow resistance through the insulator to absorb noise at a predetermined peak frequency.

Abstract: According to an aspect, the present embodiments may be associated with a wet-laid, nonwoven material including high temperature refractory fibers and thermoplastic fibers formed into the nonwoven material using a wet-laid process. In an embodiment, a fluoropolymer is included in the nonwoven material. In an embodiment, the refractory fibers are at least partially cleaned of shot and latex binder or binder fiber is eliminated or at least substantially reduced.

Abstract: According to an aspect, the present embodiments may be associated with a heat shield including a sealing member. In an embodiment, the sealing member is positioned along at least a portion of a partially hemmed edge and retained thereby. Thus, the heat shield is capable of providing insulative and/or sealing properties when used, specifically thermal, vibrational and/or acoustical shielding, as well as limiting fluid flow across the edge of the heat shield.

Abstract: According to some embodiments, a material and a method of providing thermal and acoustical insulation with an insulating shield that is moldable and self-supporting insulating shield, is presented. The shield includes a nonwoven material and an oleophobic coating applied to the outer surface of the nonwoven material. The oleophobic coating includes a percent add-on (% AO) of less than approximately 3% AO and a penetration into the surface of the nonwoven material of less than approximately 10%.

Abstract: A composite filter media of a nanofiber layer that includes nanofibers formed from non-polar, non-conductive thermoplastic polymers using a solution spinning process to form the nanofibers directly onto a conductive layer is presented, along with the associated methodology for making such media. The conductive layer includes at least about greater than about 5 wt. % conductive fibers, Z-directional conductivity and a uniform surface conductivity of at least about 10?7 microsiemens.

Abstract: According to an aspect, the present embodiments may be associated with a wet-laid, nonwoven material including high temperature refractory fibers and thermoplastic fibers formed into the nonwoven material using a wet-laid process. In an embodiment, a fluoropolymer is included in the nonwoven material. In an embodiment, the refractory fibers are at least partially cleaned of shot and latex binder or binder fiber is eliminated or at least substantially reduced.

Abstract: Nonwoven filter media with an alpha value greater than about 13 generally includes a plurality of large diameter fibers, a plurality of ultrafine diameter fibers, and a binder. The large diameter fibers have an average diameter of greater than about 6 microns and make up more than about 60% by weight of the fiber web. The ultrafine diameter fibers have an average diameter of less than about 1 micron. Also disclosed is a method of manufacturing a filter media.

Abstract: A wet-laid dual-layer air filtration media having a thin, lightweight top layer and a bottom layer is provided. The novel media includes a large diameter synthetic polymeric fiber in the top layer that deforms plastically and retains cohesion as a single object, while minimizing use of frangible components that become airborne upon handling. The novel media provides improved high dust holding capacity, while typically maintaining an overall lower basis weight than heretofore available media.

Abstract: Nonwoven filter media with an alpha value greater than about 13 generally includes a plurality of large diameter fibers, a plurality of ultrafine diameter fibers, and a binder. The large diameter fibers have an average diameter of greater than about 6 microns and make up more than about 60% by weight of the fiber web. The ultrafine diameter fibers have an average diameter of less than about 1 micron. Also disclosed is a method of manufacturing a filter media.

Abstract: A gradient density padding material includes a single layer of nonwoven material having at least one surface processed to form a portion of a thickness thereof having a density increased with respect to a remaining portion of the thickness thereof. The single layer of nonwoven material after processing has an airflow resistance within the range of 200-4000 MKS Rayls, wherein said single layer of nonwoven material has an enhanced acoustic performance. A method of making a gradient density padding material having an enhanced acoustic performance includes the steps of providing a single layer of nonwoven material and processing at least one surface of the single layer of nonwoven material to form a portion of a thickness thereof having a density increased with respect to a remaining portion of the thickness thereof. The single layer of nonwoven material after processing has an airflow resistance within the range of 200-4000 MKS Rayls.

Abstract: Pleated filtration media and filtration devices generally include a filter media radially disposed about the annular perforated inner core, the filter media comprising a plurality of circumferentially disposed linear pleats extending from the inner core to a constant height (h) defined by an outer diameter; and one or more intermediate pleats circumferentially disposed between adjoining linear pleats, wherein each one of the intermediate pleats has a height less than the constant height, and wherein the height of the intermediate pleats progressively decreases in a clockwise or a counter clockwise direction. Also disclosed are methods for increasing surface area of a pleated filtration media.