Polymer fiber and nonwoven
AssigneeFitesa Germany GmbH
InventorsSteffen Bornemann, Markus Haberer
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Abstract
A polymer fiber comprising a thermoplastic polymer and an inorganic filler, wherein the filler content, based on the polymer fiber, is more than about 10% by weight and the mean particle size (D50) of the filler is less than or equal to about 6 μm. A textile fabric, especially nonwoven, produced from the polymer fiber.
Claims15
Polymer fibers comprising a thermoplastic polymer and an inorganic filler wherein the filler content, based on the polymer fiber, is greater than about 10 wt %, and the average particle size (D50) of the filler is equal to or less than about 6 pm, wherein the polymer fibers comprise spunbond multicomponent filaments having a core shell configuration in which a first polymer component is in the core and a second polymer component is in the shell, and wherein the filler is present in the core only, and wherein the weight percentage of the core, referred to the weight of the multicomponent filament is greater than about 50 wt %.
A nonwoven fabric of polymer fibers comprising a thermoplastic polymer and an inorganic filler wherein the filler content, based on the polymer fiber, is from 10 to 25 wt. %, and the average particle size (D50) of the filler is equal to or less than about 6 pm, wherein the nonwoven fabric has a basis weight that is from 7 to 500 g/m2, and wherein a product of the basis weight and the aft permeability in accordance with DIN EN ISO 9237 is in the range of 88,000 to 132,000 and the value of a quotient of the head water in accordance with DIN EN20811 and the basis weight is in the range from 2 to 3, and wherein the polymer fibers have a core/shell configuration in which a first or second component is in the core and the other of said first and second component is in the shell, and wherein the filler is present in the core only, and wherein the core consists of polypropylene and calcium carbonate particles, and the shell consists of polypropylene.
Dependencies are inferred from the claim text.