Soil resistant fiber structure

Abstract

Provided is a fiber structure having high adhesion suppressibility against aqueous soil and oily soil and soil removability in washing. A soil resistant fiber structure includes a resin film on at least a part of a fiber surface, the resin film containing polyvinyl alcohol and a fluorine-based oil-repellent resin having a hydrophilic component, the fiber structure having a water repellency degree of 2 or less as measured by a spray test in accordance with JIS L-1092, and an oil repellency degree of 2 or more as measured in accordance with AATCC 118 method. The fluorine-based oil-repellent resin is preferably a fluorine-based oil-repellent resin containing a polyoxyalkylene group. The polyvinyl alcohol preferably has an average polymerization degree of 200 to 1500.

1 . A soil resistant fiber structure comprising a resin film on at least a part of a fiber surface, the resin film containing polyvinyl alcohol and a fluorine-based oil-repellent resin having a hydrophilic component, the soil resistant fiber structure having a water repellency degree of 2 or less as measured by a spray test in accordance with ES L-1092, and an oil repellency degree of 2 or more as measured in accordance with AATCC 118 method. 
     
     
         2 . The soil resistant fiber structure according to  claim 1 , wherein the fluorine-based oil-repellent resin is a fluorine-based oil-repellent resin containing a polyoxyalkylene group. 
     
     
         3 . The soil resistant fiber structure according to  claim 1 , wherein the polyvinyl alcohol has an average polymerization degree of 200 to 1500. 
     
     
         4 . The soil resistant fiber structure according to  claim 1 , wherein the fluorine-based oil-repellent resin contains a repeating unit derived from a vinyl fluoride monomer represented by a following general formula (I), and has a perfluorooctanoic acid and perfluorooctanesulfonic acid content below a detection limit.
   CH 2 ═C(CH 3 )C(═O)OCH 2 CH 2 (CF 2 ) 5 CF 3   (I)
   
     
     
         5 . The soil resistant fiber structure according to  claim 1 , wherein the fluorine-based oil-repellent resin, polyvinyl alcohol, and a triazine ring-containing resin are added to a surface of the fiber structure. 
     
     
         6 . The soil resistant fiber structure according to  claim 1 , wherein a soil removability degree of the fiber structure in a soil removability test for pressed soil is 3 to 4 or more until after industrial washing is performed 50 times. 
     
     
         7 . A garment comprising the fiber structure according to  claim 1 . 
     
     
         8 . A method for producing a soil resistant fiber structure, the method comprising treating a fiber structure with a treatment liquid containing polyvinyl alcohol and a fluorine-based oil-repellent resin having a hydrophilic component. 
     
     
         9 . The soil resistant fiber structure according to  claim 2 , wherein the fluorine-based oil-repellent resin contains a repeating unit derived from a vinyl fluoride monomer represented by a following general formula (I), and has a perfluorooctanoic acid and perfluorooctanesulfonic acid content below a detection limit.
   CH 2 ═C(CH 3 )C(═O)OCH 2 CH 2 (CF 2 ) 5 CF 3   (I)
   
     
     
         10 . The soil resistant fiber structure according to  claim 2 , wherein the polyvinyl alcohol has an average polymerization degree of 200 to 1500. 
     
     
         11 . The soil resistant fiber structure according to  claim 10 , wherein the fluorine-based oil-repellent resin contains a repeating unit derived from a vinyl fluoride monomer represented by a following general formula (I), and has a perfluorooctanoic acid and perfluorooctanesulfonic acid content below a detection limit.
   CH 2 ═C(CH 3 )C(═O)OCH 2 CH 2 (CF 2 ) 5 CF 3   (I)
   
     
     
         12 . The soil resistant fiber structure according to  claim 11 , wherein a soil removability degree of the fiber structure in a soil removability test for pressed soil is 3 to 4 or more until after industrial washing is performed 50 times. 
     
     
         13 . The soil resistant fiber structure according to  claim 11 , wherein the fluorine-based oil-repellent resin, polyvinyl alcohol, and a triazine ring-containing resin are added to a surface of the fiber structure. 
     
     
         14 . The soil resistant fiber structure according to  claim 13 , wherein a soil removability degree of the fiber structure in a soil removability test for pressed soil is 3 to 4 or more until after industrial washing is performed 50 times. 
     
     
         15 . The soil resistant fiber structure according to  claim 3 , wherein the fluorine-based oil-repellent resin contains a repeating unit derived from a vinyl fluoride monomer represented by a following general formula (I), and has a perfluorooctanoic acid and perfluorooctanesulfonic acid content below a detection limit.
   CH 2 ═C(CH 3 )C(═O)OCH 2 CH 2 (CF 2 ) 5 CF 3   (I)
   
     
     
         16 . The soil resistant fiber structure according to  claim 15 , wherein a soil removability degree of the fiber structure in a soil removability test for pressed soil is 3 to 4 or more until after industrial washing is performed 50 times. 
     
     
         17 . The soil resistant fiber structure according to  claim 4 , wherein the fluorine-based oil-repellent resin, polyvinyl alcohol, and a triazine ring-containing resin are added to a surface of the fiber structure. 
     
     
         18 . The soil resistant fiber structure according to  claim 4 , wherein a soil removability degree of the fiber structure in a soil removability test for pressed soil is 3 to 4 or more until after industrial washing is performed 50 times.