Systems, devices and methods are provided for producing fibrous materials and products, such as filters. A system comprises a first device for generating one or more fiber stream(s), and a second device for isolating nanoparticles within a gaseous medium. The second device forms the nanoparticles into a stream and feeds this stream into the fiber streams to form the fibrous material. This distributes the nanoparticles more uniformly throughout the fibrous material. In addition, the nanoparticles increase the overall surface area within the material, which, in certain applications, increases its filtration efficiency and allows for the capture of submicron contaminants without significantly compromising other factors, such as pressure drop through the filter. Filters produced with these systems and methods are capable of withstanding rigorous conditioning, which allows the filter to achieve substantially the same level of filtration performance throughout the lifetime of the filter.

Disclosed is an insulation product comprising hemp fibres bonded together using one or more biopolymers. Hemp fibres having lengths of between 5 and 100 mm amount to at least 50% by weight of the product. A hemp containing insulating batt or board may be made from opened hemp fibres, opened biopolymer binder fibres, mixing to produce a mixture in which the components are dispersed, air-laying the mixture, heating to above the melting point of the biopolymer binder fibres, forming to a desired thickness or density; and cooling

A roofing material including a bitumen or other hot melt coating disposed across a base sheet of stitch-bonded fabric incorporating a blend of standard and bi-component polyester staple fibers stitch-bonded with a plurality of parallel stitch lines of stitching yarn running in the machine direction. The bicomponent fibers may be heat activated and cooled prior to application of the hot melt coating thereby providing dimensional stability.

Fibrous elements, such as filaments and/or fibers, and more particularly to fibrous elements that contain a non-hydroxyl polymer, fibrous structures made therefrom, and methods for making same are provided.

Nonwoven fabrics may be fashioned as topical delivery systems with increased and controllable rate of product release, while still possessing the requisite strength and durability for mass production and distribution. Such delivery systems comprise fabrics that are fashioned from micro-denier fibers that are produced by fibrillating bicomponent island-in-the-sea fibers. Facial masks made from these fabrics can achieve adequate product delivery in 3-5 minutes or less.

The present invention provides a chargeable sheath/core-structured fiber that contains a polypropylene-based resin as a main resin, wherein the sheath part contains (a) a carboxylic anhydride-modified polyolefin and (b) at least one antioxidant selected from the group consisting of a combined antioxidant a phenolic antioxidant and a phosphorus-based antioxidant, and sulfur-based antioxidants; and (c) an oil containing a polyoxyalkylene alkyl ether represented by the general formula (I) as a finishing oil is deposited on the outer surface of the sheath part, and that can satisfy heat resistance and charge retainability. (In the formula, R.sup.1 represents a saturated or unsaturated aliphatic hydrocarbon group having 10 to 30 carbon atoms; R.sup.2 represents a hydrogen atom or a methyl group; and k is an integer of 1 to 4.) ##STR00001##

Self-crimped multi-component fibers (SMF) are provided that include (i) a first component comprising a first polymeric material, in which the first polymeric material comprises a first melt flow rate (MFR) that is less than 50 g/10 min; and (ii) a second component comprising a second polymeric material, in which the second component is different than the first component. The SMF includes one or more three-dimensional crimped portions. Also provided are nonwoven fabrics comprising a plurality of SMFs. Methods of manufacturing SMFs and nonwoven fabrics including SMFs are also provided.

A skin-core fiber having a skin of a propylene ethylene copolymer having: i) xylene soluble fraction from 14 wt % to 27 wt %; ii) intrinsic viscosity of the fraction soluble in xylene at 25° C. from 1.0 to 2.4 dl/g; iii) melt flow rate, MFR, from 12 g/10 min to 60 g/10 min; iv) an ethylene derived units content from 5.0 wt % to 12.0 wt %; v) the ethylene derived units content of the fraction insoluble in xylene from 2.5 wt % to 6.0 wt %; vi) the ethylene derived units content of the fraction soluble in xylene ranging from 15.2. wt % to 30.2 wt %; vii) C.sup.13 NMR sequences PEP on the fraction insoluble in xylene from 3.5 mol % to 5.5 mol %; and viii) C.sup.13 NMR sequences PEP on the fraction soluble in xylene from 11.0 mol % to 14.2 mol %; and a core of a polyethylene having a density between 0.940 g/cm.sup.3 to 0.975 g/cm.sup.3.

An abrasion resistant wipe and a manufacturing method therefor. The abrasion resistant wipe has an upper layer and a lower layer each being a meltblown fiber web and a middle layer being wood pulp fiber web; wherein the meltblown fiber web comprises meltblown fibers with fiber surface being high melting point resin and meltblown fibers with fiber surface comprising low melting point resin; there is a difference of ≥20° C. between melting point of the low melting point resin and melting point of the high melting point resin; percentage of the meltblown fibers with fiber surface comprising low melting point resin in total fibers of the meltblown fiber web is greater than 5%; the meltblown fibers of the meltblown fiber web penetrate in the wood pulp fiber web.

A nonwoven filtration medium that includes a fibrous base media including synthetic and/or fiberglass fibers and microfibrillated cellulose fibers.