| 摘要 |
PROBLEM TO BE SOLVED: To provide an erosion prevention sheet having a recovering property of a sheet thickness, the stability of the sheet thickness against a temperature variation, and a sediment filling property, not damaged by machines and human power in installation, having resistance against an external force applied thereto in installation and removal, having specified strength capable of withstanding the removal thereof for replacement, and not obstructing the growth of plants. SOLUTION: This erosion prevention sheet having a percentage of void of 90 to 98% is formed by thermally fusing, with each other, crimped composite fibers comprising a high melting point polypropylene resin A and a low melting point polypropylene resin B and having a molten flow index ratio (MFR2/MFR1) of the molten flow index (MFR2) of the resin B to the molten flow index (MFR1) of the resin A of 12 or higher. COPYRIGHT: (C)2005,JPO&NCIPI
|
