Fibrous sheet

Abstract

Provided are a fibrous sheet having a stress relaxation rate defined by the following formula of less than or equal to 85%: stress relaxation rate [%]=(stress S 5 at extension after five minutes/stress S 0 at initial extension)×100 when a stress at extension immediately after extension in an in-plane first direction at 50% elongation is defined as a stress S 0 (N/50 mm) at initial extension, and a stress at extension at a time of extending in the first direction at 50% elongation for five minutes is defined as a stress S 5 (N/50 mm) at extension after five minutes, and a bandage including the fibrous sheet.

1 . A fibrous sheet having a stress relaxation rate defined by a formula below of less than or equal to 85%:
   stress relaxation rate [%]=(stress  S   5  at extension after five minutes/stress  S   0  at initial extension)×100
   when a stress at extension immediately after extension in an in-plane first direction at 50% elongation is defined as a stress S 0  (N/50 mm) at initial extension, and a stress at extension at a time of extending in the first direction at 50% elongation for five minutes is defined as a stress S 5  (N/50 mm) at extension after five minutes.   
     
     
         2 . The fibrous sheet according to  claim 1 ,
 wherein the stress relaxation rate is greater than or equal to 65%.   
     
     
         3 . The fibrous sheet according to  claim 1 ,
 wherein the stress S 0  at initial extension is from 2 to 30 N/50 mm.   
     
     
         4 . The fibrous sheet according to  claim 1 ,
 wherein the fibrous sheet has a length direction and a width direction, and   the first direction is the length direction.   
     
     
         5 . A fibrous sheet that satisfies a formula below:
   { T   3 /(3× T   1 )}×100≤85[%]
   when a thickness of a single fibrous sheet measured in accordance with A method specified in JIS L 1913 is defined as T 1  [mm], and a thickness of three superimposed sheets measured under the same conditions is defined as T 3  [mm].   
     
     
         6 . The fibrous sheet according to  claim 5 ,
 wherein the fibrous sheet satisfies a formula below:
     S   2   /S   1 ≥3
 
   when a stress at extension at a time of extension in an in-plane first direction at 50% elongation is defined as a stress S 1  (N/50 mm) at 50% extension, and a stress at extension at a time of extension in an in-plane second direction orthogonal to the first direction at 50% elongation is defined as a stress S 2  (N/50 mm) at 50% extension.   
     
     
         7 . The fibrous sheet according to  claim 6 ,
 wherein the fibrous sheet has a length direction and a width direction, and   the first direction is the width direction.   
     
     
         8 . The fibrous sheet according to  claim 5 ,
 wherein the fibrous sheet has a basis weight of greater than or equal to 50 g/m 2 .   
     
     
         9 . The fibrous sheet according to  claim 5 ,
 wherein the fibrous sheet has a compression elastic modulus measured in accordance with JIS L 1913 of less than or equal to 85%.   
     
     
         10 . A fibrous sheet having a length direction and a width direction,
 wherein a bending resistance in the width direction measured in accordance with Handle-o-Meter method specified in JIS L 1913 is less than or equal to 300 mN/50 mm.   
     
     
         11 . The fibrous sheet according to  claim 10 ,
 wherein the bending resistance in the width direction is lower than a bending resistance in the length direction.   
     
     
         12 . The fibrous sheet according to  claim 10 ,
 wherein the fibrous sheet has a compression elastic modulus measured in accordance with JIS L 1913 of less than or equal to 85%.   
     
     
         13 . The fibrous sheet according to  claim 10 ,
 wherein the fibrous sheet is a nonwoven fabric sheet, and   fibers constituting the nonwoven fabric sheet have an average fineness of less than or equal to 20 dtex.   
     
     
         14 . The fibrous sheet according to  claim 1 ,
 wherein the fibrous sheet is a nonwoven fabric sheet.   
     
     
         15 . The fibrous sheet according to  claim 14 ,
 wherein the fibrous sheet comprises crimped fibers.   
     
     
         16 . The fibrous sheet according to  claim 1 ,
 wherein the fibrous sheet has a curved surface sliding stress of 3 to 30 N/50 mm.   
     
     
         17 . The fibrous sheet according to  claim 1 ,
 wherein the fibrous sheet is a bandage.   
     
     
         18 . The fibrous sheet according to  claim 5 ,
 wherein the fibrous sheet is a nonwoven fabric sheet.   
     
     
         19 . The fibrous sheet according to  claim 18 ,
 wherein the fibrous sheet comprises crimped fibers.   
     
     
         20 . The fibrous sheet according to  claim 10 ,
 wherein the fibrous sheet is a nonwoven fabric sheet.   
     
     
         21 . The fibrous sheet according to  claim 20 ,
 wherein the fibrous sheet comprises crimped fibers.   
     
     
         22 . The fibrous sheet according to  claim 5 ,
 wherein the fibrous sheet has a curved surface sliding stress of 3 to 30 N/50 mm.   
     
     
         23 . The fibrous sheet according to  claim 10 ,
 wherein the fibrous sheet has a curved surface sliding stress of 3 to 30 N/50 mm.   
     
     
         24 . The fibrous sheet according to  claim 5 ,
 wherein the fibrous sheet is a bandage.   
     
     
         25 . The fibrous sheet according to  claim 10 ,
 wherein the fibrous sheet is a bandage.