Multi-row coaxial melt-blown system including support including first duct to convey polymeric fluid parallel to a delivery direction and second duct to convey air or gas, a box removably constrained to the support and including acceleration ducts parallel delivery direction including tubing in fluid connection with first duct to distribute the fluid, first holes parallel the delivery direction, centred and spaced relative to acceleration ducts along the delivery direction to house each part of a respective tube, second holes parallel the delivery direction for air or gas passage, and a slit extending transversely to the delivery direction between the acceleration ducts and the first holes in fluid connection with the second holes. The support includes a housing to contain the box and the slit extends in the box from side to side in fluid connection with the second duct to convey air or gas from second duct to second holes.

A pack for spinning is provided with a kneading part disposed on a spinneret. The kneading part includes: an introduction plate including a plurality of first introduction holes for introducing a melted polymer; and a plurality of kneading units including a supply plate including a plurality of independent supply grooves into which the polymer introduced from the introduction holes flows and one or more supply holes disposed in each of the supply grooves, and a converging plate including a plurality of converging grooves in which a plurality of grooves into which the polymer supplied from the supply holes flows are intersected and a plurality of second introduction holes disposed in each of the converging grooves.

A system having a first polymer source and a spin beam in fluid communication with the first polymer source is provided. The spin beam includes a spinneret assembly having filament nozzles configured and arranged to extrude a plurality of filaments of a first polymer. A gas distribution plate is disposed downstream of the spinneret assembly, and includes a plurality of gas distribution slots that are configured and arranged to receive two or more corresponding filament nozzles of the spinneret assembly therein. A stream of gas is introduced into the plurality of slots to draw and attenuate the filaments extruded by the plurality of filament nozzles. The drawn and attenuated filaments are collected on a collection surface disposed downstream of the gas distribution plate to form a nonwoven fabric. A solid additive, such as pulp fibers may be blended with the filaments prior to collecting the filaments on the collection surface.

Articles, such as sanitary tissue products, including fibrous structures, and more particularly articles including fibrous structures having a plurality of fibrous elements wherein the article exhibits differential cellulose content throughout the thickness of the article and methods for making same are provided.

Disclosed herein are improvements to processes and equipment for the manufacture of composite nonwoven webs comprising a mixture of two or more different fibers and formed from at least two streams of air-entrained fibers. Adjacent the perimeter of an exit port of one of the fiber streams are located a series of spaced tabs and apertures. As a first stream of air-entrained fibers pass the series of tabs and apertures, vortices are formed therein. When mixed with a second stream of air-entrained fibers, the vortices within the first stream of fibers causes increased mixing of the fibers, helping to drive the first fibers deeper into the second stream of air-entrained fibers.

Provided is a spunbond nonwoven fabric that is easy to produce due to excellent spinnability and has uniform and sufficient quality including mechanical properties while the spunbond nonwoven fabric is highly filled with an inorganic substance powder. An inorganic substance powder-blended spunbond nonwoven fabric is composed of a fiber, the fiber including: a thermoplastic resin and an inorganic substance powder in a mass ratio of 50:50 to 10:90, and an ethylene-based polymer wax having a weight average molecular weight of 400 or more and 5,000 or less in an amount of 0.1 part by mass or more and 3.0 parts by mass or less relative to 100 parts by mass of a total amount of the thermoplastic resin and the inorganic substance powder.

The invention relates to a fibrous nonwoven, in particular for a filter medium, having a first layer, wherein at least one single-piece fiber strand of said first layer has a first fiber portion and a second fiber portion in the longitudinal direction, and wherein the fiber strand has a thickening substantially in said second fiber portion.

A process (100, 101) for the production of spunbonded nonwoven (1) and a device (200, 201) are shown, comprising an embossing pattern (10), wherein a spinning mass (2) is extruded through a plurality of nozzle holes of at least one spinneret (3, 30) to form filaments (4, 40) and the filaments (4, 40) are drawn by a drawing air stream (5, 50), in each case, in the extrusion direction, with the filaments (4, 40) being deposited on a perforated tray (7) of a conveying device (8) to form a spunbonded nonwoven (1). So as to allow an efficient, technically simple and inexpensive introduction of the embossing pattern into the spunbonded nonwoven, it is suggested that the perforated tray (7) has an embossing structure (9) with an embossing pattern (10), the filaments (4, 40) are pressed into the embossing structure (9) by the drawing air stream (5, 50) and the spunbonded nonwoven (1) thus formed is provided with the embossing pattern (10).

Fibres and nonwoven materials comprising microfibrillated cellulose, and optionally inorganic particulate material and/or additional additives, and optionally a water soluble or dispersible polymer. Nonwoven materials made from fibres comprising microfibrillated cellulose, and optionally inorganic particulate material and/or a water soluble or dispersible polymer.

Charged polymeric webs, such as electret webs, include a thermoplastic resin and a charge-enhancing additive. The additives are substituted heterocyclic thiolate salts. The heterocyclic thiolate salt 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.