Polypropylene spunbond nonwoven fabric and the preparing process thereof

摘要

The present invention is a polypropylene long fiber spunbond needle punched nonwoven fabric having a characteristic of being suitable for use as a coastal civil engineering material because of its strong chemical resistance, chemical resistance, and alkali resistance in nonwoven fabrics used for civil engineering materials and building materials, and a manufacturing method thereof. Regarding the manufacturing method of the polypropylene long fiber spunbond needle punching nonwoven fabric of the present invention, after spinning a polypropylene long fiber having a diameter of 10 to 30 microns, by applying a constant temperature and pressure to maintain a web form only a part Forming a prebonded web that is thermally fused to maintain shape stability such as spunbond; And forming a fiber entanglement of the non-heat-sealed fibers by performing a needle punching process on the prebonding web prepared in the spunbonding step.;The method for producing a polypropylene long fiber spunbond needle punching nonwoven fabric of the present invention configured as described above is manufactured in a form in which at least one outer layer is partially heat-sealed and at the same time interlacing fibers between needles using polypropylene to form needle punching. In addition to providing a nonwoven fabric that combines the softness of a nonwoven fabric with the mechanical stiffness of a spunbond nonwoven fabric, the central web layer is made of ultra-fine meltblown layers with the added advantage of providing both thermal and sound absorption effects simultaneously. It exhibits excellent alkali resistance and chemical resistance, and can be used suitably for building materials and civil engineering materials.;Nonwovens, Meltblown, Prebonding