| 摘要 |
The present invention relates to a nonwoven fabric (1) formed by heat-compressing black filament yarn with a pair of embossing press rollers wherein the black filament yarn is composed of polypropylene resin with denier thickness of 3±0.2 and the black filament yarn is made multilayered and even by making the black filament fall freely. The black filament yarn constitutes a black spunbond nonwoven fabric (1) with weight of 58 to 62 g/m^2 by arranging the filament yarn so that an embossing part (10) can account for 20 to 35% of the whole area of the nonwoven fabric (1). The nonwoven fabric (1) constitutes an entanglement part (20) having a plurality of the threads of loop-type filament yarn can be exposed to upper and lower surfaces, wherein an entanglement thickness (t) is 0.7 to 0.9 mm as the loop-type filament yarn on the lower surface of the entanglement part (20) is pushed by covering soil with the nonwoven fabric (1). The growth of crops is facilitated and the germination of weed seeds is inhibited by covering soil with the nonwoven fabric (1) even in a wet environment for growing crops i.e., where it rains a lot or soil contains much moisture. |
