Patent ID: 9689099
Date: 2017-06-27
CPC Classifications: A61F,B32B,D04H,D06C,Y10T

Claim:
1. A method of producing a stretchable nonwoven fabric, comprising: non-homogeneous stretching of a nonwoven fabric to be treated including elastic fibers and extensible fibers, while transporting the nonwoven fabric to be treated in a machine direction so that high-stretch regions and low-stretch regions are formed in the nonwoven fabric, and after completion of said non-homogeneous stretching, heating the nonwoven fabric having the high-stretch regions and the low-stretch regions for 0.1 to 10 seconds at a temperature of 40° C. or higher and below a melting point of the elastic fibers, wherein in the nonwoven fabric having the high-stretch regions and the low-stretch regions the high-stretch regions and the low-stretch regions alternate in the machine direction, and are parallel to a direction perpendicular to the machine direction, and in said heating, the nonwoven fabric having the high-stretch regions and the low-stretch regions undergoes heat shrinkage in a range of 30% to 99%.