| 摘要 |
PURPOSE: To obtain a soft laminated nonwoven structural material having a high tensile strength, high delamination resistance and water absorptivity together with hydrophobicity by laminating and unifying a polyester spunbonded nonwoven fabric with a natural fiber nonwoven fabric. CONSTITUTION: This laminated nonwoven structural material is obtained by laminating a spunbonded nonwoven fabric consisting of polyethylene terephthalate with a nonwoven fabric made by three dimensional mechanical interlacing of cotton fibers and then carrying out fusion treatment of the resultant laminate under a pressure by using an ultrasonic fusion device equipped with a pattern roll. This nonwoven structural material is unified as a whole by fixing the cotton fibers 2 at least located in the boundary surface of both the nonwoven fabric layers in a state thereof embedded in a fused part 1 of the polyester filaments where the ratio of A% of the area of dotted fused zone and density B dots/cm<2> of the dotted fused zone to the whole surface area of the structural material satisfy the relationships of 4<=A<=50 and 7<=B<=80, respectively, in the dotted fused zone 1 of polyester filaments with cotton fibers. |
