Method for manufacturing functional yarn having deodorization property and quick sweat absorbency
The present invention relates to a method for producing a functional yarn, in which zirconium phosphate having a multiple-layered structure is used as a deodorizing material and a melted polymer is spun through a spinning nozzle having a multi-lobal sectional shape. According to the present invention, the melted polymer contains layered fine zirconium phosphate inorganic particles having low hardness, and thus the abrasion of production process equipment can be minimized during fiber production and also an excellent deodorizing property and an excellent sweat-absorbing and quick-drying property are exhibited.
1. A method for producing a functional yarn having a deodorizing property and a sweat-absorbing and quick-drying property, the method comprising the steps of:
mixing a polyester having an intrinsic viscosity of 0.70-0.95 dL/g with 1-20 wt %, based on a solid content of yarn fiber, of fine zirconium phosphate inorganic particles having a multiple-layered structure, thereby preparing a master batch chip;
mixing the master batch chip with a general polyester chip to obtain a mixture, and melting the mixture at a temperature of 250-270° C., thereby preparing a melted polymer; and
melt-spinning the melted polymer through a spinning nozzle having a multi-lobal sectional shape at a spinning temperature of 285-315° C. and an adjusted stretching ratio corresponding to a spinning speed of 2500-4000 m/min,
wherein the fine zirconium phosphate inorganic particles have a structure in which several tens to several hundreds zirconium phosphate single-layers are superimposed on one another, and the fine zirconium phosphate inorganic particles have a Mohs hardness of 4-6, and
wherein a plurality of hydrogen atoms are bonded between adjacent layers of the multiple-layered structure.
2. The method of claim 1 , wherein the fine zirconium phosphate inorganic particles have a diameter of 0.1-2.0 μm.
3. The method of claim 1 , wherein preparing the melted polymer comprises mixing the master batch chip and the general polyester chip so that the content of the fine zirconium phosphate inorganic particles becomes 0.1-3 wt % based on the solid content of the yarn fiber.
4. The method of claim 1 , wherein the multi-lobal sectional shape of the spinning nozzle is a cloverleaf or cross shape.
5. The method of claim 1 , wherein the functional yarn has a single-yarn fineness of 0.5-2 denier, exhibits a deodorizing functional corresponding to removal of 85% or more of ammonia and 70% or more of acetic acid, and has moisture absorbing and drying properties of 50% or more.