| abstract |
A sheet-like nonwoven fabric made of a biodegradable polymer having flexibility and water retention is provided. A fiber structure of a biodegradable polymer having a fiber diameter of 500 nm to 30 μm, the density changes alternately at intervals of 100 μm to 2 mm, and the bulk density of the sparse structure is 20 to 90 kg / m 3 , A sheet-like nonwoven fabric having a dense structure with a bulk density of 100 to 200 kg / m 3 , a step of producing a fiber structure by an electrospinning method, and a step of making it a dense structure by hydroentanglement. Manufacturing method. [Selection figure] None |