Wearable article comprising a laminate with excellent sweat management properties. The laminate comprises a first web and a second web. The second web is formed of a first fibrous layer and a second fibrous layer, which are integrally combined with each other. The second fibrous layer may be more hydrophilic than the first fibrous layer; and/or the second fibrous layer may have higher average surface area per volume than the first fibrous layer.

A composite nonwoven sheet material includes pulp fibers, a reinforcement material and microfibers. The sheet material has one pulp-enriched first outer layer and one microfiber-enriched second outer layer, the reinforcement material is thereby interposed between the pulp-enriched first outer layer and the microfiber-enriched second outer layer and the pulp fibers and the microfibers penetrate the reinforcement material. Also disclosed is a process of producing such composite nonwoven sheet material and the use of such composite nonwoven sheet material.

A composite nonwoven sheet material includes pulp fibers, a reinforcement material and microfibers. The sheet material has one pulp-enriched first outer layer and one microfiber-enriched second outer layer, the reinforcement material is thereby interposed between the pulp-enriched first outer layer and the microfiber-enriched second outer layer and the pulp fibers and the microfibers penetrate the reinforcement material. Also disclosed is a process of producing such composite nonwoven sheet material and the use of such composite nonwoven sheet material.

A nonwoven web material that contains fibers formed by compounding at least one polymer with a tackifier is provided. The nonwoven web material can be used as a wipe or tack cloth and can exhibit a dust holding capacity of at least about 10 grams/m.sup.2 and a lint potential of less than about 5 fibers/cm.sup.2. In addition to containing a tackifier that is compounded with the polymer(s) used to form the fibers of the web, the nonwoven web material can be textured, post-bonded, apertured, or treated with elemental fluorine gas to further improve its dust holding capacity and minimize lint production. In addition, the nonwoven web material leaves minimal residue after contacting a surface.

A nonwoven web material that contains fibers formed by compounding at least one polymer with a tackifier is provided. The nonwoven web material can be used as a wipe or tack cloth and can exhibit a dust holding capacity of at least about 10 grams/m.sup.2 and a lint potential of less than about 5 fibers/cm.sup.2. In addition to containing a tackifier that is compounded with the polymer(s) used to form the fibers of the web, the nonwoven web material can be textured, post-bonded, apertured, or treated with elemental fluorine gas to further improve its dust holding capacity and minimize lint production. In addition, the nonwoven web material leaves minimal residue after contacting a surface.

The invention refers to a composite material developed for manufacturing thermoformed products with applications in furniture making, automotive industry, etc., a method and machinery for the manufacturing of the material in unwoven form. The composite material for thermoforming is made of a thermoplastic fibrous component consisting of 4-60 mm long and 7-16 DEN fine polypropylene fibers representing 40% to 50% of the total material weight and a plant fiber component which can be hemp, jute, sisal, coconut, etc., or a mix of natural fibers which is 70-80 DEN fine and 5 to 100 mm in length and represents 60% to 50% of the total material weight. The process for manufacturing the claimed composite material consists in taking and proportioning the components, followed by their mixing and coarse defibering and then a fine mixing in a four-chamber module which also opens the natural fibers to 70 . . . 80 DEN fine, followed by the consolidation of the fibers and, finally, the rolling of the resulting fabric in a roll. The machinery for the manufacturing of the claimed composite material has a modular structure, comprising two modules (1 and 2) for feeding the components, two modules (3 and 4) for weighing and proportioning the components, a primary mixing and coarse defibering module (5), a module (7) for the fine mixing and fibre opening, an interlacing module (8) and a module (9) for pulling and rolling the final fabric.

The invention refers to a composite material developed for manufacturing thermoformed products with applications in furniture making, automotive industry, etc., a method and machinery for the manufacturing of the material in unwoven form. The composite material for thermoforming is made of a thermoplastic fibrous component consisting of 4-60 mm long and 7-16 DEN fine polypropylene fibers representing 40% to 50% of the total material weight and a plant fiber component which can be hemp, jute, sisal, coconut, etc., or a mix of natural fibers which is 70-80 DEN fine and 5 to 100 mm in length and represents 60% to 50% of the total material weight. The process for manufacturing the claimed composite material consists in taking and proportioning the components, followed by their mixing and coarse defibering and then a fine mixing in a four-chamber module which also opens the natural fibers to 70 . . . 80 DEN fine, followed by the consolidation of the fibers and, finally, the rolling of the resulting fabric in a roll. The machinery for the manufacturing of the claimed composite material has a modular structure, comprising two modules (1 and 2) for feeding the components, two modules (3 and 4) for weighing and proportioning the components, a primary mixing and coarse defibering module (5), a module (7) for the fine mixing and fibre opening, an interlacing module (8) and a module (9) for pulling and rolling the final fabric.

Spun microfibers include a blend of 70 wt. % to 90 wt. % meltblown-grade polyolefin and 10 wt. % to 30 wt. % thermoplastic starch, wherein the microfibers are suitable for use in a wet-laid process. A method for producing an absorbent product includes producing a blend of 70 wt. %-90 wt. % meltblown-grade polyolefin with 10 wt. % to 30 wt. % thermoplastic modified starch (TPMS), wherein the blend prior to spinning has a melt flow index greater than 150; spinning the blend into microfibers in a fiber spinning process; cutting the microfibers into staple fibers; and incorporating the staple fibers into a wet-laid process for making a nonwoven web.

Spun microfibers include a blend of 70 wt. % to 90 wt. % meltblown-grade polyolefin and 10 wt. % to 30 wt. % thermoplastic starch, wherein the microfibers are suitable for use in a wet-laid process. A method for producing an absorbent product includes producing a blend of 70 wt. %-90 wt. % meltblown-grade polyolefin with 10 wt. % to 30 wt. % thermoplastic modified starch (TPMS), wherein the blend prior to spinning has a melt flow index greater than 150; spinning the blend into microfibers in a fiber spinning process; cutting the microfibers into staple fibers; and incorporating the staple fibers into a wet-laid process for making a nonwoven web.

The present disclosure is directed toward an improved nanofibrous electret filtration media of which the stand-alone electret nanofibrous web comprises a single source randomly intermingled fiber network that yields high breathability due to the high porosity and improved filtration efficiency for use as improved filtration media for respiratory devices and face masks.