Use of continuous filament nonwoven fabrics to prevent the escape of down in textile products filled with down

Abstract

A use of a nonwoven fabric made of continuous filaments for preventing the escape of down from a textile product filled with down, wherein the nonwoven fabric is obtained by a spinning method, in which multi-component fibers are deposited to form a nonwoven, whereby the multi-component fibers are split into continuous filaments with a titer of less than 0.15 dtex and the nonwoven is mechanically bonded to form a nonwoven fabric, the nonwoven fabric not being thermally or chemically bonded over the surface.

1 . A method of preventing escape of down from a textile product filled with down, the method comprising:
 spinning a nonwoven fabric comprising continuous filaments;   depositing multi-component fibers to form a nonwoven;   splitting the multi-component fibers into continuous filaments with a titer of less than 0.15 dtex; and   bonding the nonwoven using mechanical bonding, comprising a fluid jet bonding, to form a nonwoven fabric,   wherein the nonwoven fabric is being thermally or chemically bonded over its surface.   
     
     
         2 . The method of  claim 1 , wherein the multi-component fibers are split into continuous filaments with a titer of less than 0.12 dtex. 
     
     
         3 . The method of  claim 1 , wherein the nonwoven fabric comprises continuous filaments having a titer of less than 0.075 dtex, 
     
     
         4 . The method of  claim 1 , wherein the nonwoven fabric has a mass per unit area of 70 g/m 2  to 200 g/m 2 , preferably of 90 g/m 2  to 150 g/m 2 . 
     
     
         5 . The method of  claim 1 , wherein the nonwoven fabric has a mass per unit area of 90 g/m 2  to 150 g/m 2 . 
     
     
         6 . The method of  claim 1 , wherein the multi-component fibers are bi-component fibers. 
     
     
         7 . The method of  claim 1 , wherein the multi-component fibers include components comprising a polyester, polyamide, polyolefin, polyurethane, or a mixture of two or more of any of these. 
     
     
         8 . The method of  claim 1 , wherein the multi-component fibers are bi-component fibers comprising a polyester component and a polyamide component. 
     
     
         9 . The method of  claim 1 , wherein the multi-component fibers are bi-component fibers consisting essentially of a polyester component and a polyamide component. 
     
     
         10 . The method of  claim 1 , wherein the multi-component fibers have a cake-shaped (orange-shaped) structure, which preferably has 24, 32, 48 or 64 segments, and particularly preferably has at least 32 segments. 
     
     
         11 . The method of  claim 1 , wherein the multi-component fibers have a cake-shaped (orange-shaped) structure having 24, 32, 48 or 64 segments. 
     
     
         12 . The method of  claim 1 , wherein the multi-component fibers have a cake-shaped (orange-shaped) structure having at least 32 segments. 
     
     
         13 . The method of  claim 1 , wherein the nonwoven fabric has an average pore size of 5 μm to 20 μm and/or a maximum pore size of 10 μm to 50 μm, measured in conformity with ASTM E 1294-89 and ASTM F 316-03 using a pore measuring instrument PSM 165 from Topas, DE. 
     
     
         14 . The method of  claim 1 , wherein the nonwoven fabric has an air permeability of at least 20 mm/s, measured according to EN ISO 9237:1995-12A with a test area of 20 cm 2  and a differential pressure of 200 Pa. 
     
     
         15 . The method of  claim 1 , wherein the nonwoven fabric has at least 12,000 km/m 2  single filaments. 
     
     
         16 . The method of  claim 1 , wherein the nonwoven fabric has a mass per unit area of 90 g/m 2  to 160 g/m 2 , an air permeability according to EN ISO 9237:1995-12A of at least 20 mm/s, and at least 12,000 km/m 2  single filaments. 
     
     
         17 . The method of  claim 1 , wherein the multi-component fibers have a cake-shaped (orange-shaped) structure,
 wherein the multi-component fibers are split into continuous filaments with a titer of less than 0.12 dtex,   wherein the mechanical bonding comprises a water jet bonding, and   wherein the nonwoven fabric has a mass per unit area of 70 g/m 2  to 200 g/m 2 .   
     
     
         18 . The method of  claim 1 , wherein the nonwoven fabric is down-proof in a simulated cushion stress test according to DIN EN 12132-1, part 1, with a mixture of 90% goose down and 10% goose feathers. 
     
     
         19 . A textile product comprising with down, optionally in a form of bedding, a jacket, padding, a mattress or sleeping bag, comprising a textile cover and down contained therein,
 wherein the cover comprises a nonwoven fabric comprising continuous filaments to prevent the escape of down,   wherein the nonwoven fabric is obtained by a spinning method, in which multi-component fibers are deposited to form a nonwoven, the multi-component fibers are split into continuous filaments with a titer of less than 0.15 dtex, and the nonwoven is bonded by mechanical bonding including a fluid jet bonding, to form a nonwoven fabric, the nonwoven fabric not being thermally or chemically bonded over the surface.   
     
     
         20 . A method for producing the textile product of  claim 15 , the method comprising:
 (a) filling the textile cover comprising the nonwoven fabric comprising continuous filaments, with the down; and   (b) down-proof closing the cover.