A waterproof and moisture-permeable composite material is provided, which is composed of a waterproof and moisture-permeable membrane and a melt-blown non-woven fabric. The melting point of melt-blown non-woven fabric ranges from 80° C. to 130° C., in which the melt-blown non-woven fabric is a thermoplastic polymer which may be a thermoplastic polyether ester elastomer polymer. A method for forming a waterproof and moisture-permeable composite material includes: providing a thermoplastic polymer; performing a melt-blown process to the thermoplastic polymer by using an extruder to form a melt-blown fiber, so the melt-blown fiber on a conveyer belt with multiple meshes to form a melt-blown non-woven fabric; covering a moisture-permeable membrane on the melt-blown non-woven fabric to adhere the moisture-permeable membrane and the melt-blown non-woven fabric to form a waterproof and moisture-permeable composite material.

The present disclosure relates to a seat element, in particular, a headrest for a vehicle seat, the seat element comprising at least one support bar made of metal, a first layer provided at an exterior surface of the support bar, and a cushion made of an upholstery material. Hereby, the first layer is formed by blowing on first fibers made of plastics which are thermally welded directly or indirectly to the exterior surface.

At least part of the first fibers extends away from the exterior surface and/or the first layer towards the outside into the upholstery material and is thermally cross-linked with the upholstery material, in particular, blown-on further fibers.

A spun-blown non-woven web is disclosed which is formed from a plurality of fibers formed from a single polymer having an average fiber diameter ranging from between about 0.5 microns to about 50 microns; a basis weight of at least about 0.5 gsm; a tensile strength, measured in a machine direction, ranging from between about 20 g to about 4,200 g; a ratio of tensile strength, measured in the machine direction, to basis weight of at least about 20:1; and a ratio of percent elongation, measured in the machine direction, to fiber diameter of at least about 15.

A spun-blown non-woven web is disclosed which is formed from a plurality of fibers formed from a single polymer having an average fiber diameter ranging from between about 0.5 microns to about 50 microns; a basis weight of at least about 0.5 gsm; a tensile strength, measured in a machine direction, ranging from between about 20 g to about 4,200 g; a ratio of tensile strength, measured in the machine direction, to basis weight of at least about 20:1; and a ratio of percent elongation, measured in the machine direction, to fiber diameter of at least about 15.

Charged polymeric webs, such as electret webs, include a thermoplastic resin and a charge-enhancing additive. The additives are substituted heterocyclic thiols. The heterocyclic thiol has 2 nitrogen groups and a third group that may be an NH, N-NH.sub.2, O, or S group. The substituent group is an aromatic or heterocyclic aromatic group. The electret webs may be a non-woven fibrous web or a film. The electret webs are suitable for use as filter media.

The present invention discloses a nonwoven web and methods for manufacturing the nonwoven web. One aspect of the invention includes a plurality of outwardly facing nozzles that are positioned at various angles with respect to the axis of a pipe the nozzles are located on. Another aspect of the invention pertains to perturbing at least a portion of a fiber matrix prior to the fiber matrix collecting on a forming surface. The perturbed fiber matrix provides for an increase in cross-machine direction fiber strength of the nonwoven web.

The present invention discloses a nonwoven web and methods for manufacturing the nonwoven web. One aspect of the invention includes a plurality of outwardly facing nozzles that are positioned at various angles with respect to the axis of a pipe the nozzles are located on. Another aspect of the invention pertains to perturbing at least a portion of a fiber matrix prior to the fiber matrix collecting on a forming surface. The perturbed fiber matrix provides for an increase in cross-machine direction fiber strength of the nonwoven web.

A production method for a low molecular weight polymer suitable for a melt-blown non-woven fabric and a production device for melt-blown non-woven fabric, with which a high molecular weight polymer can be reduced in molecular weight by applying a shear force to the high molecular weight polymer without adding an additive. The low molecular weight polymer and the melt-blown non-woven fabric are produced using a continuous high shearing device that applies a shear force to the high molecular weight polymer serving as a raw material by rotation of a screw body to reduce the molecular weight of the high molecular weight polymer so as to obtain a low molecular weight polymer, and cools the low molecular weight polymer by passing the low molecular weight polymer through a passage arranged in the axial direction inside the screw body.

A production method for a low molecular weight polymer suitable for a melt-blown non-woven fabric and a production device for melt-blown non-woven fabric, with which a high molecular weight polymer can be reduced in molecular weight by applying a shear force to the high molecular weight polymer without adding an additive. The low molecular weight polymer and the melt-blown non-woven fabric are produced using a continuous high shearing device that applies a shear force to the high molecular weight polymer serving as a raw material by rotation of a screw body to reduce the molecular weight of the high molecular weight polymer so as to obtain a low molecular weight polymer, and cools the low molecular weight polymer by passing the low molecular weight polymer through a passage arranged in the axial direction inside the screw body.

The present invention relates to a fiber-containing structure comprising an interwoven and welded base material and a welded elastomer layer, and at least one part of the base material and the welded elastomer layer are welded to each other. The invention also relates to a method for manufacturing the fiber-containing structure and a shoe structure containing the fiber-containing structure.