A nanofiber nonwoven product is disclosed which comprises a polyamide with a relative viscosity from 2 to 330, spun into nanofibers with an average diameter of less than 1000 nanometers (1 micron). In general, the inventive products are prepared by: (a) providing a polyamide composition, wherein the polyamide has a relative viscosity from 2 to 330; (b) melt spinning the polyamide composition into a plurality of nanofibers having an average fiber diameter of less than 1 micron, followed by (c) forming the nanofibers into the product.

The present disclosure provides materials such as cellulose based materials and composite materials. Also provided herein are methods for making or using the materials.

The present disclosure provides materials such as cellulose based materials and composite materials. Also provided herein are methods for making or using the materials.

Disclosed herewith is a filter paper for manufacturing filters for smoking articles, in particular filter cigarettes, with the following properties the filter paper comprises fibers comprising pulp fibers, at least 80% by weight, preferably at least 90% by weight, particularly preferably at least 95% by weight and highly particularly preferably 100% by weight of the filter paper is formed by long-fiber pulp fibers, of the fibers, a proportion with respect to the number of the fibers of between 2% and 10%, preferably between 3% and 9% and particularly preferably between 4% and 8% has a length of less than 0.2 mm, the air permeability of the filter paper, measured in accordance with ISO 2965:2009, is between 500 cm.Math.min.sup.−1.Math.kPa.sup.−1 and 15000 cm.Math.min.sup.−1.Math.kPa.sup.−1 and preferably between 1000 cm.Math.min.sup.−1.Math.kPa.sup.−1 and 9000 cm.Math.min.sup.−1.Math.kPa.sup.−1, the number-averaged length of the fibers in the filter paper is greater than 1 mm and less than 5 mm, preferably greater than 2 mm and less than 4 mm, and the number-averaged width of the fibers in the filter paper is between 10 μm and 50 μm, preferably between 20 μm and 40 μm, and particularly preferably between 25 μm and 35 μm.

Disclosed herewith is a filter paper for manufacturing filters for smoking articles, in particular filter cigarettes, with the following properties the filter paper comprises fibers comprising pulp fibers, at least 80% by weight, preferably at least 90% by weight, particularly preferably at least 95% by weight and highly particularly preferably 100% by weight of the filter paper is formed by long-fiber pulp fibers, of the fibers, a proportion with respect to the number of the fibers of between 2% and 10%, preferably between 3% and 9% and particularly preferably between 4% and 8% has a length of less than 0.2 mm, the air permeability of the filter paper, measured in accordance with ISO 2965:2009, is between 500 cm.Math.min.sup.−1.Math.kPa.sup.−1 and 15000 cm.Math.min.sup.−1.Math.kPa.sup.−1 and preferably between 1000 cm.Math.min.sup.−1.Math.kPa.sup.−1 and 9000 cm.Math.min.sup.−1.Math.kPa.sup.−1, the number-averaged length of the fibers in the filter paper is greater than 1 mm and less than 5 mm, preferably greater than 2 mm and less than 4 mm, and the number-averaged width of the fibers in the filter paper is between 10 μm and 50 μm, preferably between 20 μm and 40 μm, and particularly preferably between 25 μm and 35 μm.

Process for the plasma surface treatment under vacuum of a fabric, nonwoven fabric or paper material for obtaining materials to be used for the filtration and separation of two immiscible liquids.

Process for the plasma surface treatment under vacuum of a fabric, nonwoven fabric or paper material for obtaining materials to be used for the filtration and separation of two immiscible liquids.

The present invention relates to a cellulose filter paper for testing the ignition propensity of cigarette paper that is provided with a marking with which the rough surface of the filter paper can be distinguished from the smooth surface, and a method for its production, a method for testing the ignition propensity of cigarette paper, and a kit having a plurality of such filter papers or stacks of such filter papers.

The present invention relates to a cellulose filter paper for testing the ignition propensity of cigarette paper that is provided with a marking with which the rough surface of the filter paper can be distinguished from the smooth surface, and a method for its production, a method for testing the ignition propensity of cigarette paper, and a kit having a plurality of such filter papers or stacks of such filter papers.

An aramid-based paper comprising at least 90 wt. % of aramid material, the aramid material including at least one of aramid shortcut and aramid fibrid, the paper including at most 40 wt. % aramid pulp, calculated on the total amount of aramid material, wherein the paper includes 0.1-10 wt. % of polyamido-amine epichlorohydrin (PAE). It has been found that the incorporation of 0.1-10 wt. % of polyamido-amine epichlorohydrin (PAE) into an aramid-based paper including at least 90 wt. % of aramid material calculated on the weight of the paper not including the PAE, the aramid material including at least one of aramid shortcut and aramid fibrid, the paper including at most 40 wt. % aramid pulp, leads to a surprising improvement of the z-strength and the tear strength of the paper.