An exterior structural trim part for a vehicle, comprising at least an area comprising at least 3 layers superposed and laminated together to form a structural unit whereby the two outer layers are compressed and consolidated fibrous layers and with an inner layer situated in-between the two fibrous outer layers being an impervious polyester foam layer.

An alumina fiber aggregate that is formed of alumina short fibers and has been subjected to needling treatment, wherein the alumina short fibers have an average fiber diameter of 6.0 μm or more and 10.0 μm or less and a specific surface area of 0.2 m.sup.2/g or more and 1.0 m.sup.2/g or less, and a residual percentage (%) of high-temperature-cycle opened gap pressure of the alumina fiber aggregate is 45% or more. A value obtained by subtracting twice the standard error of a length-weighted geometric mean diameter of fiber diameters of the alumina short fibers from the length-weighted geometric mean diameter is 6.0 μm or more. A proportion of alumina short fibers having a fiber diameter of more than 10.0 μm is preferably 5.0% or less on a number basis.

The invention concerns a hygiene product comprising at least one layer of a nonwoven wherein the nonwoven layer comprises man-made cellulosic fibers wherein the layer or the layers has or have a rewet value of equal to or less than 30% and a liquid strike through time of equal to or less than 6 seconds for the use in disposable hygiene products, such as diapers, feminine pads and incontinence products or in wet wipes like toilet wipes, facial wipes, cosmetic wipes, baby wipes and sanitary wipes for cleaning and disinfection.

Fibers can include a polypropylene composition, which can include a metallocene random copolymer of propylene and a comonomer that is an alpha-olefin different from propylene. The metallocene random copolymer can have a comonomer content of from 1.2 wt % to 1.8 wt %, a molecular weight distribution of at least 1.0 and of at most 4.0 obtained without thermal or chemical degradation, and a melting temperature T.sub.melt of at most 140 C. A nonwoven can include the fibers, and a laminate can include the nonwoven. The fibers can be produced by polymerizing the propylene and comonomer in presence of a metallocene-based polymerization catalyst to obtain the metallocene random copolymer. The polypropylene composition can be melt-extruded to obtain a molten polypropylene stream, which can be extruded from capillaries of a spinneret to obtain filaments. A diameter of the filaments can be rapidly reduced to obtain a final diameter.

Fibers can include a polypropylene composition, which can include a metallocene random copolymer of propylene and a comonomer that is an alpha-olefin different from propylene. The metallocene random copolymer can have a comonomer content of from 1.2 wt % to 1.8 wt %, a molecular weight distribution of at least 1.0 and of at most 4.0 obtained without thermal or chemical degradation, and a melting temperature T.sub.melt of at most 140 C. A nonwoven can include the fibers, and a laminate can include the nonwoven. The fibers can be produced by polymerizing the propylene and comonomer in presence of a metallocene-based polymerization catalyst to obtain the metallocene random copolymer. The polypropylene composition can be melt-extruded to obtain a molten polypropylene stream, which can be extruded from capillaries of a spinneret to obtain filaments. A diameter of the filaments can be rapidly reduced to obtain a final diameter.

An article may be made of multilayer composite material. The multilayer composite material may include central element (I) between first and second reinforcement layers (B) to form structure (B)-(I)-(B). The central element (I) may include: first and second structural layers (A), each of the first and second structural layers (A) including at least one mat of needle punched thermoplastic fibers selected from polyester fibers, polyamide fibers, polypropylene fibers, or mixtures thereof bonded through thermosetting resin; and third reinforcement layer (B) between the first and second structural layers (A). The first, second, and third reinforcement layers (B) each may include fibrous material, including one or more types of fibers selected from glass fibers, natural fibers, carbon fibers, basalt fibers, aramid fibers, or mixtures thereof.

An alumina fiber aggregate that is formed of alumina short fibers and has been subjected to needling treatment, wherein the alumina short fibers have an average fiber diameter of 6.0 m or more and 10.0 m or less and a specific surface area of 0.2 m.sup.2/g or more and 1.0 m.sup.2/g or less, and a residual percentage (%) of high-temperature-cycle opened gap pressure of the alumina fiber aggregate is 45% or more. A value obtained by subtracting twice the standard error of a length-weighted geometric mean diameter of fiber diameters of the alumina short fibers from the length-weighted geometric mean diameter is 6.0 m or more. A proportion of alumina short fibers having a fiber diameter of more than 10.0 m is preferably 5.0% or less on a number basis.

An exterior structural trim part for a vehicle, comprising at least an area comprising at least 3 layers superposed and laminated together to form a structural unit whereby the two outer layers are compressed and consolidated fibrous layers and with an inner layer situated in-between the two fibrous outer layers being an impervious polyester foam layer.

The subject matter of the invention is a method for draping on a form, which includes a step of deposition on the form of a first fold support in the form of one or more polymer nonwoven fabrics. The invention further relates to a thermoplastic nonwoven material manufactured with a nonwoven fabric of polymer fibers.

An insulation pad includes a binderless pack of glass fibers and an envelope around the binderless pack of glass fibers. The glass fibers are mechanically entangled by needling such that the binderless pack has a density of from 4.5 to 5.5 pounds per cubic foot. The insulation pad is used to insulate pipes and vessels.